CN102004474A - Detection and controller for aircraft integration test general interface - Google Patents

Abstract

The present invention discloses a detection and controller for aircraft integration test general interface for solving the technical problem that the prior aircraft test interface is complicated. The technical scheme is that an analogue switch and an A/D collecting circuit in a protocol detection circuit are used for collecting signals on an input interface to a secondary controller; after types of the signals are judged, the judging result is transferred to a primary controller of a data monitoring circuit; the primary controller controls a multi-way switch according to the judging result to transmit the detected signals to a corresponding transceiver; the primary controls uploads the signal detected by the transceiver to an upper computer by a serial port, so as to complete the monitoring and control of the signals. Frequent manual interface switchovers and on/off control of the interface are avoided via remote monitoring and controlling the hardware interfaces by software, so that automatic identification of interface protocol type of computer, automatic configuration of hardware interface switch and switching operation are realized; and the interface data can be monitored and stored according to requirements.

Description

Aircraft Integration Test General Interface Detection and Controller

technical field

The invention relates to an interface detection and controller, in particular to a general interface detection and controller for aircraft integration testing.

Background technique

In the ground integration test experiment of aerospace vehicles, the signal transmission between various systems is complicated, and a large amount of data exchange is required. During testing, these signals need to be connected to various interfaces and be detected, analyzed and controlled. As we all know, there are many interface devices, and the detection data interaction is complicated during the ITU test, so it is necessary to manually connect the corresponding interface to the detection device or disconnect it. When the test object has many types of interfaces and complex lines, such work is very cumbersome. It is necessary to manually confirm and manually plug and unplug each line, and then check one by one after connecting the corresponding lines. error. Some interfaces transmit strong current, etc., which will pose a threat to the life safety of operators. The traditional interface management method is to use the simple on-off interface of the relay, which cannot meet the requirements of complex test equipment, and does not understand the way of interface data transmission, so it can only be carried out on the premise that the interface data is known.

Contents of the invention

In order to overcome the deficiency that the existing aircraft test interface is complex, the present invention provides a universal interface detection and controller for aircraft integrated testing. Use the analog switch and A/D to collect the signal on the input interface to the slave controller, use the protocol detection algorithm to process the collected signal data, determine which type the signal belongs to, and transmit the processing result to the master controller The main controller controls the multi-channel switch according to the judgment result, and transmits the detected signal to the corresponding transceiver. The main controller detects the detailed information of the signal through the transceiver, and uploads the signal to the host computer through the serial port to complete Signal monitoring and control. Due to the remote detection and control of the hardware interface through the software, it is possible to avoid manual frequent switching of the interface and the on-off control of the interface, realize the automatic identification of the interface protocol type by the remote computer, automatically configure the hardware interface switch, switch operation, and monitor and store the interface data as required.

The technical solution adopted by the present invention to solve the technical problem: a general interface detection and controller for aircraft integrated testing, which is characterized in that it includes input interfaces 1-n, interference shielding circuits 1-n, interface control circuit, protocol detection circuit, data A monitoring circuit and a serial port, the interface control circuit includes a relay array, a multiple selection switch, and a channel gating control circuit; the protocol detection circuit includes an analog switch, an A/D acquisition circuit and a slave controller; the data monitoring circuit includes Multi-way switch, CAN transceiver, serial port transceiver, 429 transceiver, 1553B transceiver and the main controller; the user sends the on-off command of the input interface 1~n and other interfaces to the main controller of the data monitoring circuit through the serial port through the host computer. After receiving the instruction, the main controller analyzes and changes the relay array according to the instruction, and connects or disconnects the corresponding interface through a multi-choice switch; the interface control circuit inputs the signal of the input interface 1~n to the protocol detection circuit On the analog switch, the controller controls the analog switch, connects each pin of the input interface 1~n to the A/D acquisition circuit one by one, and measures the voltage value of each pin, saves the measured voltage value data, and measures the data After the completion, the protocol judgment is performed, and the type judgment result data of the detected data transmitted by the input interface 1~n is sent to the data monitoring circuit; the main controller in the data monitoring circuit configures the interface control circuit, and selects the specific input interface 1~n n, input its signal to the interface control circuit, according to the result of the previous protocol detection, the signal is gated to the corresponding transceiver through the multi-way switch, the main controller counts the signal data and rate through the transceiver, and the statistical result Upload to the host computer client through the serial port.

The beneficial results of the present invention are: the present invention utilizes the analog switch and A/D to collect the signal on the input interface to the slave controller, utilizes the protocol detection algorithm to process the collected signal data to determine which category the signal belongs to, And pass the processing result to the main controller, the main controller controls the multi-way switch according to the judgment result, and transmits the detected signal to the corresponding transceiver, the main controller detects the detailed information of the signal through the transceiver, and sends The signal is uploaded to the host computer through the serial port to complete signal monitoring and control. Due to the remote detection and control of the hardware interface through the software, it avoids manual frequent switching of the interface and the on-off control of the interface, and realizes the automatic identification of the interface protocol type by the remote computer, automatic configuration of the hardware interface switch, switching operation, and monitoring and storage of interface data as required. .

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is a block diagram of the general interface detection and controller system of the aircraft integration test of the present invention.

Fig. 2 is a system work flow chart of the general interface detection and controller of the aircraft integration test of the present invention.

Fig. 3 is a diagram of the protocol detection circuit in Fig. 1.

FIG. 4 is a flowchart of protocol detection in FIG. 3 .

Fig. 5 is a diagram of the data monitoring circuit in Fig. 1.

FIG. 6 is a flow chart of data monitoring in FIG. 5 .

Fig. 7 is a diagram of the interface control circuit in Fig. 1 .

FIG. 8 is a flow chart of interface control in FIG. 7 .

Detailed ways

The invention mainly aims at the universal serial bus in aerospace, and proposes a universal interface detection, monitoring and control circuit. The universal serial port DB9 is used to transmit data, so as to reduce the complexity of conversion between various interfaces, improve the universal row, and provide convenience for the implementation of data acquisition and software algorithms.

Referring to Figures 1-8, the aircraft integration test general interface detection and controller includes input interfaces 1-n, interference shielding circuits 1-n, interface control circuit, protocol detection circuit, data monitoring circuit and serial port, serial port type RS232.

The signal passes through the input interface 1~n, passes through the interference shielding circuit, and reaches the interface control circuit. The interface control circuit will detect that a signal is connected to the protocol detection circuit. The protocol detection circuit detects the type of data transmitted by the input interface 1~n through the protocol detection algorithm, and sends the detection result to the data monitoring circuit, and the data monitoring circuit Send the test results to the host computer client software through the serial port RS232.

After the protocol detection circuit detects the protocol of the input interface 1~n, the interface control circuit transmits the detected signal of the input interface 1~n to the data monitoring circuit, and the data monitoring circuit counts the detailed information of the signal, such as data flow and transmission rate etc., and send the test results back to the host computer client software through the serial port.

The host computer client software configures the connection status of the input interfaces 1 to n according to the information received from the input interfaces 1 to n, and transmits the configuration instructions to the data monitoring circuit through the serial port RS232, and the data monitoring circuit configures the interface control circuit according to the instructions, and sends the input Interfaces 1~n are connected to or disconnected from the interface required by the instruction to complete the detection and control of the interface.

The system workflow of aircraft integration test general interface detection and controller:

(2.1) Determine whether the input interface 1 has a signal. If there is, the voltage of each pin on input interface 1 is collected, and the communication protocol type is analyzed. If not, the detection line is shifted to input interface 2; and so on, to complete the judgment of whether there is a signal on input interface 1~n.

The signal enters the interface control circuit from the input interface 1, and the interface control circuit inputs the signal of the input interface 1 into the protocol detection circuit, and then the protocol detection circuit judges whether there is a signal input? If there is, then collect the signal, if not, continue to judge whether there is signal input in input interface 2;

(2.2) Collect the voltage of each pin of the input interface 1~n, and analyze the communication protocol type.

The data is collected and saved by the protocol detection circuit, and the communication protocol type is judged.

(2.3) Determine whether all the interface pins on the input interface 1~n have been detected, if so, send the result to the data monitoring circuit, and upload the protocol detection result message to the host computer client software through the serial port, if not, Continue to step (2.1) to judge whether the current input interface 1～n has a signal;

Process the input interfaces 1-n by the protocol detection circuit, and judge whether the protocol detection of the current interface is completed, if not, continue to collect signals and perform protocol detection, if the protocol detection is completed, the protocol detection result is transmitted to the data monitoring circuit, And the data monitoring circuit uploads the detection results to the host computer client software through the serial port RS232;

(2.4) The data monitoring circuit uploads the protocol detection result message to the host computer client software through the serial port RS232.

The protocol detection circuit sends the detection result data to the data monitoring circuit, and the data monitoring circuit uploads the detection result data to the host computer client software through the serial port RS232. The upper computer client software displays the detection results on the software interface.

(2.5) Waiting for user operations, generating user instructions and downloading them to the data monitoring circuit.

The user can operate relevant instructions through the client software of the host computer, and the client software of the host computer transmits the instruction information to the data monitoring circuit through the serial port RS232.

(2.6) The data monitoring circuit judges whether to stop the system, if not, proceed to step (2.7) to judge whether it is a line configuration instruction, and if so, end the operation.

The data monitoring circuit performs related actions according to the instruction content. If the instruction is to end the operation, it will stop working and go to sleep. If the instruction is not received, it will be executed according to other related instructions.

(2.7) The data monitoring circuit judges whether it is a line configuration command, if so, proceed to step (2.9) to judge whether to stop the data monitoring command, if not, go to the execution step (2.5) and wait for the user to operate, generate the user command and download it to the data monitoring circuit.

The data monitoring circuit judges whether the command is a line configuration command.

(2.8) Map the physical line to drive the actuator.

In the data monitoring circuit, the interface control circuit is configured according to the line configuration instruction;

(2.9) Determine whether to stop the data monitoring command, if not, proceed to step (2.10) to monitor the message and start timing, if so, end the operation.

The data monitoring circuit judges whether there is a data monitoring command, if not, it will stop working and go to sleep, if there is such a command, execute according to the relevant program;

(2.10) The data monitoring circuit monitors the message and starts timing.

The data monitoring circuit monitors the message according to the protocol information, and starts timing;

(2.11) Calculate the monitoring and statistical results of input interfaces 1~n.

The data monitoring circuit calculates the results according to the message information obtained by monitoring;

(2.12) The data monitoring circuit uploads monitoring statistics information to the host computer client software through the serial port RS232. Go to execution (2.9) to judge whether to stop the data monitoring command, and continue to judge whether there is an upper computer client software to issue a stop data monitoring command, if so, the system work is over, if not, continue to execute (2.10) to monitor the message and start timing .

The data monitoring circuit uploads the statistical results to the host computer client software through the serial port RS232, and monitors whether there is a stop data monitoring command. If there is such a command, continue monitoring. If there is no such command, judge whether there is a stop system command and press the command perform relevant actions;

(2.13) The monitoring circuit is shifted to input interface 2~n.

The data monitoring circuit starts to monitor the input interfaces 2-n;

(2.14) Terminate line monitoring.

The data monitoring circuit terminates line monitoring.

Protocol detection circuit includes analog switch, A/D acquisition circuit and slave controller.

The interface control circuit inputs the signals of the input interfaces 1-n to the analog switch of the protocol detection circuit, controls the analog switch from the controller, and connects each pin of the input interfaces 1-n to the A/D acquisition circuit successively, and Measure the voltage value of each pin and save the measured voltage value data. After the data measurement is completed, run the protocol detection algorithm to judge the protocol, and send the type judgment result data of the detected data transmitted by the input interface 1 to n to the data monitoring circuit, and the data monitoring circuit will feed back the judgment result to the host computer client through the serial port RS232 terminal software.

Protocol detection process:

(4.1) The controller self-inspection in the data monitoring circuit.

The data monitoring circuit starts the self-test, sends the self-test instruction to the slave controller in the protocol detection circuit, and waits for the slave controller to feed back the self-test result;

(4.2) Determine whether the system status is healthy. If not, perform step (4.11) to alarm and generate a system failure message; if so, continue to perform step (4.3) to access the corresponding lines of input interfaces 1 to n one by one.

The data monitoring circuit analyzes the feedback information from the protocol detection circuit, combined with the self-test results, to determine whether the system is healthy, if not, an alarm is issued, and if so, it waits for further instructions.

(4.3) Access input interfaces 1~n corresponding to line groups one by one

Connect the relevant connectors to the input interfaces 1~n.

(4.4) Each pin of the input interface 1-n is collected successively.

The data monitoring circuit sends a starting command to the slave controller in the protocol detection circuit, and the slave controller starts to work, controls the analog switch, connects each pin of the input interface 1~n to the A/D acquisition circuit one by one, and measures the voltage of each pin value.

(4.5) Determine whether the acquisition of all pins of input interfaces 1 to n is completed, if so, continue to perform step (4.6) to store the measured value and input it into the logical processing unit, if not, return to step (4.4) to collect the measurement pins one by one.

The slave controller judges whether the data of each pin of the input interface 1~n has been collected, if so, stores the data, if not, continues to control the analog switch, and collects the data of the remaining pins.

(4.6) The measured value is stored from the controller and input to the logic processing unit.

Read the measured value from the controller.

(4.7) Determine whether there is a signal from the input interface 1~n, if yes, continue to step (4.8) to calculate and analyze the measured value, and detect the communication protocol, if not, return to step (4.3) to connect the connectors of the input interface 1~n one by one Corresponding line group.

Process the measured value from the controller, and judge whether there is voltage data in the measured value, if so, analyze the measured value, if not, manually check the input interface.

(4.8) Calculate and analyze the measured value from the controller, and detect the communication protocol.

According to the measured value information, the slave controller executes the corresponding detection operation and detects the communication protocols of the input interfaces 1-n.

(4.9) Encode the measurement results and generate a test result message.

Send the protocol detection result from the controller to the data detection;

(4.10) Coding the measurement results to generate a test result message.

The measurement results are uploaded to the host computer client software through the serial port RS232 by the data detection circuit.

(4.11) alarm and generate a system failure message.

The data detection circuit sends out an alarm and generates a fault message according to the fault type.

The data monitoring circuit includes a multi-way switch, a CAN transceiver, a serial port transceiver, a 429 transceiver, a 1553B transceiver and a main controller.

The main controller in the data monitoring circuit configures the interface control circuit, selects the specific input interface 1~n, and inputs its signal to the interface control circuit, and according to the result of the previous protocol detection, the signal is gated to the corresponding interface through the multi-way switch. On the transceiver, the main controller counts the signal data and rate through the transceiver, and uploads the statistical results to the upper computer client software through the serial port RS232.

The data monitoring workflow is processed in the following steps:

(6.1) The protocol detection circuit sends the detected communication protocols of the input interfaces 1 to n to the data monitoring circuit and uploads them.

The main controller in the data monitoring circuit uploads the detection results of the protocol detection circuit to the host computer client software through the serial port RS232;

(6.2) The upper computer client software parses the test result message and displays it through the software.

The upper computer client software analyzes the protocol detection result message and displays the result;

(6.3) The user selects the monitoring line, encodes and generates a monitoring instruction message.

The client software of the upper computer converts the monitoring command into a serial port command format according to the input interface 1~n selected by the user for monitoring;

(6.4) Download the serial command message to the main controller.

The host computer client software downloads the serial port instructions to the main controller through the serial port RS232;

(6.5) The main controller analyzes the monitoring instruction and starts working.

The main controller controls the multi-way switch according to the monitoring instruction, and selects the transceiver corresponding to the detection result of the protocol detection circuit to start monitoring the interface signal;

(6.6) Determine whether there is a communication error. If not, proceed to step (6.7) to monitor the message, and start message calculation and timing, if so, alarm according to step (6.11), and generate a communication failure message.

The main controller judges whether a communication error is detected, if there is an error, it will alarm and generate a communication failure message, if there is no communication error, start monitoring the message;

(6.7) The main controller monitors the message, and starts message calculation and timing.

The main control monitors the message according to the working transceiver, counts and counts the time;

(6.8) The main controller calculates the statistical results of line communication, and encodes and generates a monitoring result message.

The main controller converts the result data into serial port instructions according to the statistical results;

(6.9) The serial port RS232 uploads the monitoring message to the host computer client software.

The main controller uploads the monitoring results to the host computer client software through the serial port RS232;

(6.10) The main controller judges whether to terminate the monitoring, if not, proceed to step (6.6) to judge whether there is a communication error, if so, the monitoring ends.

The main controller judges whether the detection is terminated according to the instruction sent by the client software of the upper computer, if not, continues to judge whether the interface has a communication error, and if so, ends the detection.

(6.11) alarm and generate a communication failure message

The main controller judges that there is a communication failure, turns on the alarm, and uploads the communication failure message to the client software of the host computer through the serial port RS232.

The interface control circuit includes a relay array, a multi-choice switch, and a channel gating control circuit.

Through the host computer client software, the user selects the on-off of the input interface 1~n and other specific interfaces and the connection between them, and sends the command to the main controller of the data monitoring circuit through the serial port RS232, and the main controller receives the command. After that, analyze and change the relay array according to the instruction, and connect or disconnect the corresponding interface through the multi-choice switch.

The workflow of the interface control circuit is processed in the following steps:

(8.1) The user operates the upper computer client software to configure the interface connection.

Through the client software of the upper computer, the user selects the on-off of the input interfaces 1~n and other specific interfaces and the connection between them;

(8.2) Encoding generates an interface configuration instruction message.

The upper computer client software converts the command into a serial port command format according to the user interface selection;

(8.3) The serial port downloads the instruction message to the main controller.

The upper computer client software sends the command information to the main controller through the serial port RS232;

(8.4) The main controller parses the interface configuration instruction and generates an interface configuration mapping logic table.

The main controller configures the interface control circuit according to the instructions, and completes the on-off of the relevant input interfaces or the connection between the relevant input interfaces;

(8.5) The interface control circuit drives the actuator to work and changes the interface state.

The interface control circuit configures relevant relay arrays, multi-choice switches, and channel gating control circuits to work according to the instructions of the main controller.

(8.6) The main controller judges whether the interface configuration is successful, if successful, then proceed to step (8.7) encoding to generate a configuration completion message, if not successful, enter step (8.9) to report to the police and generate a configuration failure file.

The main controller judges whether the interface configuration is carried out according to the instruction, if yes, generates the command configuration success file, if not, detects the alarm and generates the configuration failure file;

(8.7) Encoding generates a configuration completion message.

The main controller generates a configuration completion message and converts it into a serial command format;

(8.8) The serial port uploads the message to the host computer.

The main controller uploads the configuration completion message to the upper computer client software through the serial port RS232, and displays it in the upper computer client software.

Claims (1)

1. a kind of general interface detection and controller of aircraft integrated test, it is characterized in that: comprise input interface 1～n, interference shielding circuit 1～n, interface control circuit, protocol detection circuit, data monitoring circuit and serial port, described interface control The circuit includes a relay array, a multi-choice switch, and a channel gating control circuit; the protocol detection circuit includes an analog switch, an A/D acquisition circuit and a slave controller; the data monitoring circuit includes a multi-way switch, a CAN transceiver, a serial port Transceiver, 429 transceiver, 1553B transceiver and the main controller; the user sends the on-off command of the input interface 1~n and other interfaces through the host computer to the main controller of the data monitoring circuit through the serial port, and the main controller receives the command Afterwards, analyze and change the relay array according to the instruction, and connect or disconnect the corresponding interface by selecting one switch; the interface control circuit inputs the signal of the input interface 1~n to the analog switch of the protocol detection circuit, and controls the analog switch from the controller. Switch, connect each pin of the input interface 1~n to the A/D acquisition circuit one by one, measure the voltage value of each pin, save the measured voltage value data, after the data measurement is completed, the protocol judgment is performed, and the Detect the type of data transmitted by the input interface 1~n and send the judgment result data to the data monitoring circuit; the main controller in the data monitoring circuit configures the interface control circuit, selects the specific input interface 1~n, and inputs its signal to the interface control circuit On the circuit, according to the results of the previous protocol detection, the signal is strobed to the corresponding transceiver through the multi-way switch. The main controller counts the signal data and rate through the transceiver, and uploads the statistical result to the host computer client through the serial port.

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