CN116953401B - Efficacy data acquisition system for blasting mine sweeping test operation - Google Patents

Abstract

The invention discloses a performance data acquisition system for blasting type mine sweeping test operation, in particular to the technical field of mine sweeping, which is used for solving the problem that an effective test means is lacking at present for judging the effect of road mine sweeping of a blasting type mine sweeping tool; the method is suitable for the effect test of the blasting type mine sweeping tool for opening a passage by matching with a special simulation test mine, and is used for verifying the mine sweeping efficiency of the blasting type mine sweeping tool, and the collected mine sweeping efficiency data is used for carrying out image-text display and mine sweeping operation efficiency analysis on the mine sweeping efficiency.

Description

A performance data collection system for explosive mine clearance test operations

Technical field

The present invention relates to the technical field of mine clearance, and more specifically, the invention relates to an efficiency data acquisition system for explosive mine clearance test operations.

Background technique

Landmine is an explosive obstacle weapon, usually set up on the surface or below the ground. It is triggered by mechanical stress such as pressure and tension or signals such as magnetism, sound, vibration, etc. It is used to attack infantry and tanks and armored vehicles, split the enemy's offensive formation, and delay , hinder the enemy's attack speed and block the enemy's retreat direction. At present, there are many methods for clearing mines and opening up access roads in minefields. Mechanical means mostly use purely mechanical mine-clearing equipment such as mine-clearing chains, mine-clearing rollers, and mine-clearing plows. Hammering, rolling, shoveling, etc. are used to mechanically and mechanically remove mines. Structural destruction to clear the road of mines. Explosive mine clearing methods often use rockets tow explosive belts, in-line charges and other blasting methods, using the shock wave, high temperature and overpressure of the explosion to detonate or destroy mines, thereby opening up access to the minefield. Among them, explosive minesweeping is a common method currently used to forcibly open a path under enemy fire. The current main form is to use rockets to drag explosive belts, fly into the mine site, detonate in a delayed manner, and use detonation waves to destroy or detonate anti-tank mines or anti-infantry mines.

Regarding the mine-clearing effect of explosive mine-clearing equipment, there is currently a lack of effective testing methods to determine the effectiveness of road mine clearance.

In order to solve the above problems, a technical solution is now provided.

Contents of the invention

In order to overcome the above-mentioned shortcomings of the prior art, embodiments of the present invention provide an efficiency data collection system for explosive mine-clearing test operations, which is suitable for testing the effectiveness of blast-type mine clearing equipment in opening paths by combining it with a dedicated simulated test mine. , and verify the mine-clearing efficiency of the blasting minesweeper to solve the problems raised in the above-mentioned background technology.

In order to achieve the above objects, the present invention provides the following technical solutions:

An efficiency data collection system for explosive mine clearance test operations, including a simulation test mine, a data collection module, a wireless collection terminal and a first host computer. The simulation test mine is connected to the data collection module, and the data collection module is connected to the wireless collection module. The terminals are connected, and the wireless collection terminal is connected to the first host computer. The first host computer includes a mine clearance performance test module, and the mine clearance performance test module is connected to a mine clearance performance analysis module, in which:

The simulation test mine is a non-pressure explosive pressure-fired anti-tank mine simulation mine. It is equipped with a pressure fuze and a trigger circuit and communicates with the data acquisition module in a wired manner through the terminal block;

The data acquisition module receives the trigger signal from the simulated test mine, stores and sends the information triggering the simulated test mine to the wireless acquisition terminal through the Lora signal;

The wireless acquisition terminal serves as the information forwarding route of the Lora network, collects the trigger information of each simulated test mine in the entire system, and transmits it to the first host computer for processing;

The first host computer collects and processes minefield information through the minesweeping effectiveness test module, then transmits the minefield information to the minesweeping effectiveness analysis module to calculate the minesweeping rate, stores the minesweeping effectiveness data, and automatically generates a minesweeping effect overview.

As a further solution of the present invention, the mine clearance efficiency test module includes a mine node entry module and an initial condition setting module. Both the mine node entry module and the initial condition setting module are connected to a mine test module. The mine node entry module creates and opens a txt text file. Use a code scanning gun to read the ID of the simulated test mine, and automatically enter the ID of the simulated test mine into a txt file in batches through the lora node and store the file. The initial condition setting module is used to set the terrain, time and climate information.

As a further solution of the present invention, the minelaying test module numbers the simulated test mines buried in the site according to the order of ID reading, sets the depth and front width of the minefield as needed, the minesweeper truck enters the minefield to perform minesweeping operations, and launches rocket blasting belts , the rocket blasting belt detonates after landing and straightening. The pressure acts on the upper cover of the simulated test mine. The minesweeper sweeps the mines from left to right, recording the mine clearance serial number, the ID of the simulated test mine, the clearance situation and the actual location information of the mine. , and perform coordinate transformation based on the actual simulated test mine position information to depict the mine laying simulation interface.

As a further solution of the present invention, the mine clearance efficiency analysis module includes a shock wave pressure acquisition and display subsystem, and the shock wave pressure acquisition and display subsystem is connected to a mine clearance operation efficiency calculation module.

As a further solution of the present invention, the shock wave pressure acquisition and display subsystem includes a shock wave pressure sensor, a shock wave pressure sensor tooling for fixing the shock wave pressure sensor, a damage effect tester, a wireless networking server, a measurement and control module and a second host computer.

The built-in GPS of the damage effect tester realizes microsecond-level unified time scale timing. The timing information will be automatically written into the test data file. By reading the file data, the timing relationship between each device is compared to achieve the purpose of wireless synchronization triggering. Wireless The synchronization time difference is 1μs. In addition, wired triggering is also used to achieve synchronous triggering of multiple damage effect testers through synchronized triggers; during the experiment, the broken target wire is connected to the input end of the synchronized trigger, and the other end is tied to the test bomb. When the test bomb detonates, it breaks the target line, and the synchronous trigger outputs multiple trigger signals to multiple damage effect testers, ultimately achieving simultaneous trigger acquisition by multiple damage effect testers.

As a further solution of the present invention, the damage effect tester and the shock wave pressure sensor are distributed and arranged on both sides perpendicular to the blasting zone. The shock wave pressure sensor is installed on the shock wave pressure sensor tooling and buried underground at the measuring point. The damage effect tester has a built-in ICP. Constant current source, each damage effect tester is directly connected to 2 shock wave pressure sensors. The wireless networking server performs wireless networking for the damage effect tester within a radius of 800 meters, and connects to the second host computer through a network cable. The second host computer remotely monitors the equipment status and sets the collection parameters.

As a further solution of the present invention, the work flow of the shock wave pressure acquisition and display subsystem is as follows:

Step S1, during mine clearing operations, the shock wave pressure sensors at each measuring point in the blasting zone sense the blasting shock wave pressure signal, the damage effect tester test is automatically triggered, and the test data is stored;

Step S2, the damage effect tester transmits the shock wave pressure characteristic values of each measuring point to the second host computer through wireless communication to display the distribution of the air shock wave pressure field on the ground in the blasting zone of mine clearance operations;

Step S3, the second host computer transmits the shock wave pressure characteristic value of each measuring point, the duration of the mine clearing operation, and the proportion of simulated test mine triggering to the mine clearing operation efficiency calculation module.

As a further solution of the present invention, in step S2, the shock wave pressure characteristic values of each measuring point include point compression waveform, overpressure peak value, positive pressure action time and energy flow density.

As a further solution of the present invention, the mine clearing operation efficiency calculation module calculates the explosive mine clearing operation of the mine clearing vehicle through the overpressure peak value, positive pressure action time, energy flow density, mine clearing operation duration and simulation test mine triggering ratio of each measuring point. Efficacy analysis, the mine clearance operation efficiency is the product of the average of the product of the overpressure peak value at each measuring point, the positive pressure action time, the energy flow density and the simulation test mine triggering ratio, and then divided by the mine clearance operation time, the formula for the mine clearance operation efficiency is:

In the formula: γ is the mine clearance operation efficiency, α is the triggering ratio of simulated test mines, α is equal to the ratio of the number of triggered simulated test mines to the total number of mines, n is the number of triggered simulated test mines, and i is the number of triggered simulated test mines. The serial number of the simulation test mine, P _max,i is the overvoltage peak value of the adjacent measurement point of the i-th triggered simulation test mine, t _z,i is the positive pressure of the adjacent measurement point of the i-th triggered simulation test mine. The action time, positive pressure as time is the overpressure action time, ρ _e,i is the energy flow density of the adjacent measuring point of the i-th triggered simulation test mine, and t _s is the mine clearing operation time.

As a further solution of the present invention, the circuit of the damage effect tester includes an analog signal conditioning unit, a digital signal processing unit and a central processing unit, wherein:

The analog signal conditioning unit is responsible for analog signal conditioning. It is driven by ICP to provide a 4mA constant current drive for the pressure shock wave sensor. The analog signal captured by the shock wave pressure sensor is amplified by the gain control circuit after passing through the buffer. The ICP signal is not amplified and is then compensated by The gain control circuit of the signal controls the gain and zero point compensation of the signal. After anti-aliasing filtering, the signal enters the ADC for analog-to-digital conversion and is converted into a digital signal for processing in the next unit. The power circuit is responsible for generating a voltage value between [-5, +5 The power supply in the ]V interval is used to power the analog circuit power supply, and the generated 24V power supply is used to power the excitation source of the ICP sensor. The analog signal output by the sensor is buffered, calibrated, and then filtered by the tight acquisition circuit. The filter circuit is within the pass frequency band. The frequency response curve is flat to the maximum without fluctuations, and gradually drops to zero in the stop band. On the Bode plot of the logarithmic diagonal frequency of the amplitude, starting from the preset boundary angular frequency, the amplitude increases with the angular frequency. gradually decreases as it increases, tending to negative infinity;

The digital signal processing unit is responsible for multi-channel synchronous acquisition, trigger management, and data negative delay operations on the digital signals converted by the ADC;

The central processing unit is responsible for system data storage, data analysis, data communication transmission and GPS positioning.

The technical effects and advantages of the performance data collection system for explosive mine clearing test operations of the present invention:

The present invention tests the effect of blasting mine-sweeping equipment in opening a path by cooperating with a special simulation to test mines, and verifies the mine-sweeping efficiency of the blasting mine-sweeper. It uses the collected mine-sweeping operation efficiency data to display the mine-sweeping efficiency graphically and textually. Job performance analysis.

Description of drawings

Figure 1 is a structural block diagram of an efficiency data collection system for explosive mine clearance test operations according to the present invention;

Figure 2 is a system test schematic diagram of an efficiency data acquisition system used for explosive mine clearance test operations according to the present invention;

Figure 3 is a schematic diagram of the circuit principle of the damage effect tester.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

Example 1

As shown in Figure 1, an efficiency data collection system for explosive mine clearance test operations according to the present invention includes a simulation test mine, a data collection module, a wireless collection terminal and a first host computer. The simulation test mine and The data collection module is connected, the data collection module is connected to the wireless collection terminal, the wireless collection terminal is connected to the first host computer, the first host computer includes a mine clearance effectiveness test module, the mine clearance effectiveness test module is connected to a mine clearance effectiveness analysis module, wherein:

The simulation test mine is a non-pressure explosive pressure-fired anti-tank mine simulation mine. It is equipped with a pressure fuze and a trigger circuit and communicates with the data acquisition module in a wired manner through the terminal block;

The data acquisition module receives the trigger signal from the simulated test mine, stores and sends the information triggering the simulated test mine to the wireless acquisition terminal through the Lora signal;

The data acquisition module consists of a shell, a wireless transmitting circuit, a battery, and a terminal. When in use, it can be half buried in the soil, with only the antenna exposed. Connect with the mine through a 2-core sheathed wire to ensure smooth signal transmission. In order to ensure the safety of data transmission, the signal line is covered with an iron pipe to prevent detonation wave interference.

The wireless acquisition terminal serves as the information forwarding route of the Lora network, collects the trigger information of each simulated test mine in the entire system, and transmits it to the first host computer for processing;

The first host computer collects and processes minefield information through the minesweeping effectiveness test module, then transmits the minefield information to the minesweeping effectiveness analysis module to calculate the minesweeping rate, stores the minesweeping effectiveness data, and automatically generates a minesweeping effect overview.

The technical effects and advantages of the efficiency data collection system for blasting minesweeper test operations of the present invention: The present invention tests the effectiveness of blasting minesweeping tools in opening up paths by cooperating with special simulations to simulate test mines, and tests the blasting minesweepers. The mine-clearing efficiency is verified, and the mine-clearing efficiency is graphically displayed and the mine-clearing efficiency is analyzed through the collected mine-clearing efficiency data.

The mine clearance performance test module includes a mine node entry module and an initial condition setting module. Both the mine node entry module and the initial condition setting module are connected to the mine test module. The mine node entry module creates and opens a txt text file and uses a code scanner to read the simulation. The ID of the simulated test mine is automatically entered into the txt file in batches through the lora node and stored in the file. The initial condition setting module is used to set the terrain, time and climate information of the explosive mine clearing test operation.

The minelaying test module will number the simulated test mines buried in the site according to the order of ID reading, and set the depth and front width of the minefield as needed. The minesweeper truck enters the minefield to carry out mine clearance operations, launches the rocket blasting belt, and the rocket blasting belt lands and straightens. After detonating, the pressure acts on the upper cover of the simulated test mine. The minesweeper sweeps the mines from left to right, recording the mine clearance serial number, the ID of the simulated test mine, the removal situation and the actual location information of the mine, and conducts the test according to the actual simulation test. The location information of the mine is transformed into coordinates to draw the mine laying simulation interface.

The mine clearance efficiency analysis module includes a shock wave pressure acquisition and display subsystem, and the shock wave pressure acquisition and display subsystem is connected to a mine clearance operation efficiency calculation module.

The shock wave pressure acquisition and display system proposes a hardware solution of "distributed measurement, storage recording, and wireless transmission" in response to the requirements of shock wave pressure testing at the explosion site, as well as software ideas and functions of "remote status monitoring, wireless remote control measurement," and mine clearance operations. It can simultaneously measure the shock wave pressure signal at multiple points in a time-divided and distributed manner during demining in explosion zones, and use the lora wireless communication method to measure the distribution of the shock wave pressure field on the ground.

Example 2

The shock wave pressure acquisition and display subsystem includes a shock wave pressure sensor, a shock wave pressure sensor tooling for fixing the shock wave pressure sensor, a damage effect tester, a wireless networking server, a measurement and control module and a second host computer.

The built-in GPS of the damage effect tester realizes microsecond-level unified time scale timing. The timing information will be automatically written into the test data file. By reading the file data, the timing relationship between each device is compared to achieve the purpose of wireless synchronization triggering. Wireless The synchronization time difference is 1μs. In addition, wired triggering is also used to achieve synchronous triggering of multiple damage effect testers through synchronized triggers; during the experiment, the broken target wire is connected to the input end of the synchronized trigger, and the other end is tied to the test bomb. When the test bomb detonates, it breaks the target line, and the synchronous trigger outputs multiple trigger signals to multiple damage effect testers, ultimately achieving simultaneous trigger acquisition by multiple damage effect testers.

The damage effect tester and the shock wave pressure sensor are distributed on both sides perpendicular to the blasting zone. The shock wave pressure sensor is installed on the shock wave pressure sensor tooling and buried underground at the measuring point. The damage effect tester has a built-in ICP constant current source. Each damage effect tester has a built-in ICP constant current source. The effect tester is directly connected to two shock wave pressure sensors. The wireless networking server performs wireless networking on the damage effect tester within a radius of 800 meters, and connects to the second host computer through a network cable, and remotely monitors the equipment status through the second host computer. , set the collection parameters.

The damage effect tester uses storage test technology, wireless synchronization technology and embedded system technology to integrate the signal conditioning unit, A/D converter, large-capacity memory, rechargeable lithium battery, SOC unit and Lora wireless communication unit, etc., which can It works independently from the computer and is directly connected to the shock wave pressure sensor for synchronous measurement of shock wave overpressure signals. The equipment can be freely placed near the measuring point and automatically collects and stores shock wave pressure data, reducing the workload of wiring at the test site and reducing the cost of transmission. The degree of cable damage and interference is solved, and it solves the high-frequency signal distortion and other problems caused by cables caused by too long signal cables in traditional equipment.

The shock wave pressure sensor is installed with M10×1 thread, and the shock wave pressure measurement range is 10KPa ~ 10MPa. The resonant frequency is ≥200KHz and the rise time is 2μs. During the explosion field test, it can be reused under normal use and without being hit by fragments. The number of reuses is not less than 10 times. It fully meets the test requirements for blasting air shock wave pressure signals in mine clearance operations; shock wave The pressure sensor tooling is made of ordinary carbon steel material, which is used to install and fix the shock wave pressure sensor, and is embedded in the measuring points perpendicular to the blasting zone.

As shown in Figure 2, the workflow of the shock wave pressure acquisition and display subsystem is as follows:

Step S1, during mine clearing operations, the shock wave pressure sensors at each measuring point in the blasting zone sense the blasting shock wave pressure signal, the damage effect tester test is automatically triggered, and the test data is stored;

Step S2, the damage effect tester transmits the shock wave pressure characteristic values of each measuring point to the second host computer through wireless communication to display the distribution of the air shock wave pressure field on the ground in the blasting zone of mine clearance operations;

Step S3, the second host computer transmits the shock wave pressure characteristic value of each measuring point, the duration of the mine clearing operation, and the proportion of simulated test mine triggering to the mine clearing operation efficiency calculation module.

It should be noted that in step S2, the shock wave pressure characteristic values of each measuring point include point compression waveform, overpressure peak value, positive pressure action time and energy flow density.

The mine-sweeping operation efficiency calculation module analyzes the effectiveness of the mine-sweeping vehicle's explosive mine-sweeping operations through the over-pressure peak value, positive pressure action time, energy flow density, mine-sweeping operation duration and simulated test mine triggering ratio at each measuring point. The mine-sweeping operation efficiency is The average value of the product of the overpressure peak value at each measuring point, the positive pressure action time, the energy flow density and the product of the simulated test mine triggering ratio are divided by the mine clearance operation time. The formula for mine clearance operation efficiency is:

In the formula: γ is the mine clearance operation efficiency, α is the triggering ratio of simulated test mines, α is equal to the ratio of the number of triggered simulated test mines to the total number of mines, n is the number of triggered simulated test mines, and i is the number of triggered simulated test mines. The serial number of the simulation test mine, P _max,i is the overvoltage peak value of the adjacent measurement point of the i-th triggered simulation test mine, t _z,i is the positive pressure of the adjacent measurement point of the i-th triggered simulation test mine. The action time, positive pressure as time is the overpressure action time, ρ _e,i is the energy flow density of the adjacent measuring point of the i-th triggered simulation test mine, and t _s is the mine clearing operation time.

Example 3

As shown in Figure 3, the circuit of the damage effect tester includes an analog signal conditioning unit, a digital signal processing unit and a central processing unit, among which:

The analog signal conditioning unit is responsible for analog signal conditioning. It is driven by ICP to provide a 4mA constant current drive for the pressure shock wave sensor. The analog signal captured by the shock wave pressure sensor is amplified by the gain control circuit after passing through the buffer. The ICP signal is not amplified and is then compensated by The gain control circuit of the signal controls the gain and zero point compensation of the signal. After anti-aliasing filtering, the signal enters the ADC for analog-to-digital conversion and is converted into a digital signal for processing in the next unit. The power circuit is responsible for generating a voltage value between [-5, +5 The power supply in the ]V interval is used to power the analog circuit power supply, and the generated 24V power supply is used to power the excitation source of the ICP sensor. The analog signal output by the sensor is buffered, calibrated, and then filtered by the tight acquisition circuit. The filter circuit is within the pass frequency band. The frequency response curve is flat to the maximum without fluctuations, and gradually drops to zero in the stop band. On the Bode plot of the logarithmic diagonal frequency of the amplitude, starting from the preset boundary angular frequency, the amplitude increases with the angular frequency. gradually decreases as it increases, tending to negative infinity;

The digital signal processing unit is responsible for multi-channel synchronous acquisition, trigger management, and data negative delay operations on the digital signals converted by the ADC;

The central processing unit is responsible for system data storage, data analysis, data communication transmission and GPS positioning. The central processing unit is connected to the hardware corresponding to the GPS function through the UART interface.

In order to ensure long-term stable data transmission, the system has the following characteristics in hardware and software:

In terms of hardware, all materials and chips use wide-temperature versions, and all clock sources on the device use high-precision active oscillators and are designed with metal casings to further improve heat dissipation efficiency;

In software, the binary sum of the sent packets is then inverted, with the goal of detecting any changes in the data during transmission. If there is an error in the checksum of the received segment, the segment will be discarded and the receipt of the segment will not be acknowledged. Each packet sent is numbered. The receiver sorts the data packets and transmits the ordered data to the application. layer, after sending a segment, it starts a timer and waits for the destination to confirm receipt of the segment. If an acknowledgment cannot be received in time, the segment will be retransmitted. Each party to the connection has a fixed size buffer space. The receiving end only allows the sending end to send data that can be accommodated by the receiving end's buffer. When the receiver is too late to process the sender's data, it can prompt the sender to reduce the sending rate to prevent packet loss.

In order to ensure signal integrity, the system has the following characteristics in terms of PCB signal integrity requirements:

(1) Medium: The control of printed circuit board (PCB) insulation materials directly determines the intensity of noise and crosstalk generated by rapid switching of I/O signals. PCB dielectric materials can be assigned a dielectric constant εr, which directly affects the impedance of the transmission line. The lower the dielectric constant of the dielectric material, the faster the signal propagates. Choosing appropriate dielectric materials will reduce the dielectric loss of the PCB, because when the signal frequency is above 1GHZ, the dielectric loss dominates compared to the conductor loss. For a given dielectric material, dielectric loss is determined by the loss rate and dissipation factor. A smaller loss rate variable will result in lower high-frequency attenuation of the signal. For high-speed signals, Standard FR4 plates are used.

(2) Stacking: First obtain the following four information: the total number of layers of the single board, including the number of signal layers, power layers, and bottom layers; the thickness of the single board; the target impedance of single-ended signals and differential signals; and the dielectric constant of the PCB. Secondly, laminate according to the following principles: the signal layer should be adjacent to the ground layer; the high-speed signal line of the system should be between the inner layer of the circuit board and the two ground layers; multiple ground layers can reduce common-mode electromagnetic interference and reduce the impedance of the PCB board. ;The signal layer is tightly coupled to the ground layer, that is, the dielectric thickness between the two layers is very small; the power layer should be tightly coupled to the ground layer.

(3) Layout: PCB layout should follow the following principles: lay out the digital and analog parts separately; lay out the main functional devices according to the signal flow direction, and keep the connections between high-speed signals as short as possible; power supply decoupling capacitors and high-speed The signal coupling capacitor should be placed as close to the receiving end as possible; the layout should also consider issues such as heat dissipation and earthquake resistance.

(4) Routing: The most important thing for routing is to follow the principle of impedance matching. High-speed signals travel in the inner layer instead of the surface layer. Choose stripline instead of microstrip line. The advantage of choosing stripline is that the stripline has good concealment performance, and a pair of symmetrical edge-coupled stripline structures can ensure the impedance environment. constant. High-speed signals are not routed over long distances on the surface. They are generally fanned out from the device pins in a short distance. Once fanned out, they immediately enter the inner layer with better impedance control through the vias, and then continue routing. The differential trace impedance is controlled to 100 ohms, and the trace width is calculated through SI9000/SI6000. The routing error of the two signal lines for differential signals shall not exceed 5 miles. The channel-to-channel skew between input and receiver cannot exceed 11ns. Differential signals on adjacent layers cannot be routed in parallel, and crosstalk can be avoided through orthogonal routing. D>3S. D: the distance between two adjacent differential pairs; S: the distance between two lines of a pair of differential pairs. S>3H. H: The distance between the line and the reference plane.

(5) Via holes: For the via holes of high-speed signal lines, try not to have stubs; when unavoidable, you can use the back drilling process; it is recommended to use blind/buried holes; remove useless pads; increase the diameter of the anti-pad; close to each Add a ground hole to each signal hole to provide a better AC return path; use short and thick wires to connect the capacitor pins and via holes.

(6) Power supply and ground plane: Pay attention to the current carrying capacity and current channel when handling the power supply ground.

(7) Signal integrity simulation and testing: After the high-speed PCB design is completed, it must be simulated. The quality of the high-speed powder-wrapped signal is observed through the simulation software Cadence Allegro SI, and the quality of the signal is judged by looking at the "eye opening" size of the eye diagram. bad. There are many methods for signal integrity testing. The main method is waveform testing, which uses an oscilloscope to test the amplitude, edges and glitches of the waveform. By testing the parameters of the signal, you can see whether the amplitude and edge time meet the device interface level requirements. Are there any signal glitches, etc.?

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application. should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Finally: The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection.

Claims (6)

1. The utility model provides a efficiency data acquisition system for blasting formula mine sweeping test operation, includes emulation analog test mine, data acquisition module, wireless acquisition terminal and first host computer, its characterized in that, emulation analog test mine links to each other with data acquisition module, and data acquisition module links to each other with wireless acquisition terminal, and wireless acquisition terminal links to each other with first host computer, and first host computer includes mine sweeping efficiency test module, and mine sweeping efficiency test module is connected with mine sweeping efficiency analysis module, wherein:

the simulation test lightning is a non-pressure-resistant explosion-pressure type anti-tank landmine simulation lightning, is provided with an explosion fuse and a trigger circuit, and is communicated with the data acquisition module in a wired mode through a connecting terminal;

the data acquisition module receives a trigger signal from the simulation test mine, and sends information for triggering the simulation test mine to the wireless acquisition terminal through Lora signal storage;

the wireless acquisition terminal is used as an information forwarding route of the Lora network, and the triggering information of each simulation test mine of the whole system is collected and transmitted to a first upper computer for processing;

the first upper computer collects and processes the lightning field information through the lightning efficiency test module, then transmits the lightning field information to the lightning efficiency analysis module to calculate the lightning efficiency, stores the lightning operation efficiency data and automatically generates a lightning effect sketch;

the mine sweeping efficiency test module comprises a mine node input module and an initial condition setting module, wherein the mine node input module and the initial condition setting module are both connected with a mine sweeping test module, the mine node input module is used for automatically inputting the IDs of the simulated test mines into the txt file in batches through the lora nodes and storing the files by establishing and opening txt text files and using a code scanning gun to read the IDs of the simulated test mines, and the initial condition setting module is used for setting the topography, time and climate information of blasting type mine sweeping test operation;

the mine laying test module numbers simulated test mines buried in a field according to an ID reading sequence, sets the depth and the front width of the mine field as required, enables a mine sweeping vehicle to enter the mine field to conduct mine sweeping operation, launches a rocket blasting belt, detonates after the rocket blasting belt falls to the ground and straightens, enables pressure to act on an upper cover of the simulated test mines, sweeps the mine sweeping vehicle from left to right, records the serial number of the mine sweeping, the ID of the simulated test mines, sweeping conditions and actual position information of the mines, and carries out coordinate transformation according to the position information of the actual simulated test mines to describe a mine laying simulation interface;

the mine sweeping efficiency analysis module comprises a shock wave pressure acquisition and display subsystem, and the shock wave pressure acquisition and display subsystem is connected with a mine sweeping operation efficiency calculation module;

the mine sweeping operation efficiency calculation module analyzes the efficiency of the blasting mine sweeping operation of the mine sweeping vehicle according to the overpressure peak value, the positive pressure acting time, the energy flow density, the mine sweeping operation duration and the triggering proportion of the simulation test mine of each measuring point, wherein the mine sweeping operation efficiency is the product of the average value of the products of the overpressure peak value and the positive pressure acting time and the energy flow density of each measuring point and the triggering proportion of the simulation test mine, and then the pressure peak value, the positive pressure acting time and the energy flow density are divided by the mine sweeping operation time, and the formula of the mine sweeping operation efficiency is as follows:

wherein: gamma is the efficiency of mine sweeping operation, alpha is the triggering proportion of the simulated test mines, alpha is the ratio of the number of the triggered simulated test mines to the total mine distribution number, n is the number of the triggered simulated test mines, i is the triggered simulated test Lei Xuhao, P _max,i Simulating and testing overpressure peak value, t of lightning adjacent measuring points for ith trigger _z,i For the positive pressure acting time of the i-th triggered simulation test lightning adjacent measuring points, the positive pressure acting time is the overpressure acting time, ρ _e,i Simulating and testing the energy flow density of the lightning adjacent measuring points for the ith trigger, t _s Is the mine sweeping operation time.

2. The efficacy data acquisition system for blasting mine sweeping test operation according to claim 1, wherein the shock wave pressure acquisition and display subsystem comprises a shock wave pressure sensor, a shock wave pressure sensor tool for fixing the shock wave pressure sensor, a damage effect tester, a wireless networking server, a measurement and control module and a second upper computer.

3. The efficacy data acquisition system for blasting mine sweeping test operation according to claim 2, wherein the damage effect testers and the shock wave pressure sensors are distributed and arranged on two sides perpendicular to a blasting belt, the shock wave pressure sensors are installed on a shock wave pressure sensor tool and buried underground, an ICP constant current source is arranged in each damage effect tester, each damage effect tester is directly connected with 2 shock wave pressure sensors, a wireless networking server performs wireless networking on the damage effect testers with the radius of 800 meters, the damage effect testers are connected with a second upper computer through a network cable, and the state of equipment is remotely monitored and acquisition parameters are set through the second upper computer.

4. A performance data acquisition system for a blast mine sweeping test operation according to claim 2, wherein the workflow of the shock wave pressure acquisition display subsystem is as follows:

step S1, when the mine sweeping operation is carried out, each measuring point impact wave pressure sensor of the blasting belt senses a blasting impact wave pressure signal, a damage effect tester tests to be automatically triggered, and test data are stored;

step S2, the damage effect tester transmits the shock wave pressure characteristic values of all the measuring points to a second upper computer through wireless communication, and the distribution condition of the air shock wave pressure field of the blasting belt in the mine sweeping operation on the ground is displayed;

and S3, the second upper computer transmits the pressure characteristic value of the shock wave of each measuring point, the mine sweeping operation duration and the proportion of simulated test mine triggering to the mine sweeping operation efficiency calculation module.

5. The system of claim 4, wherein in step S2, the impact wave pressure characteristic values of each measuring point include a point-picking compression waveform, an overpressure peak value, a positive pressure action time and a fluence.

6. The system of claim 5, wherein the circuit of the damage effect tester comprises an analog signal conditioning unit, a digital signal processing unit, and a central processing unit, wherein:

the analog signal conditioning unit is responsible for conditioning analog signals, 4mA constant current drive is provided for the pressure shock wave sensor by ICP excitation, the analog signals captured by the shock wave pressure sensor are amplified by the gain control circuit after passing through the buffer, the ICP signals are not amplified, the gain control circuit of the signals is used for compensating the gain and zero point of the signals, the signals enter the ADC to be subjected to analog-digital conversion after anti-aliasing filtering and enter the next unit for processing, the power supply circuit is responsible for generating a power supply with the voltage value within the range of [ -5, +5]V for supplying power to the analog circuit power supply, the generated 24V power supply is used for supplying power to the excitation source of the ICP sensor, the analog signals output by the sensor are buffered, and then filtered, and then are collected by the elastic acquisition circuit, the frequency response curve of the filter circuit in the passband is flat to the maximum extent, no fluctuation exists, and gradually drops to zero in the passband, the amplitude gradually decreases towards infinity with the increase of the angular frequency on the bode chart of the logarithmic diagonal frequency of the amplitude;

the digital signal processing unit is responsible for carrying out multichannel synchronous acquisition, trigger management and data negative delay on the digital signals converted by the ADC;

the central processing unit is responsible for system data storage, data analysis, data communication transmission and GPS positioning.