CN105181047A - Coastal water flow rate high-frequency acoustic monitoring system and monitoring method thereof - Google Patents
Coastal water flow rate high-frequency acoustic monitoring system and monitoring method thereof Download PDFInfo
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Abstract
The present invention discloses a coastal water flow rate high-frequency acoustic monitoring system and a monitoring method thereof. The system comprises at least two high-frequency acoustic flow instruments, and each high-frequency acoustic flow instrument comprises a computer control terminal used for generating and sending a modulated carrier wave signal and a control signal to a flow measuring device, receiving and processing the modulated carrier wave signal returned from the flow measuring device, and sending the control signal to a GPS positioning module; a GPS positioning device connected with the computer control terminal and used for sending a time signal and a positioning signal to the computer control terminal; and the flow measuring device connected with the computer control terminal and used for receiving the modulated carrier wave signal and the control signal from the computer control terminal and for receiving acoustic wave signals from other flow measuring devices. With adoption of high frequency sound waves, a flow rate of flow streams at coastal areas within a small range can be monitored, accurate data of an average flow rate of the area is obtained, coastal water flow rate monitoring defects of low-frequency acoustic equipment are overcome, and the monitoring system is simple in installation and low in cost.
Description
Technical field
The present invention relates to along seawater velocity monitoring technical field, particularly one is along seawater flow high-frequency acoustic monitoring system monitoring method.
Background technology
Various components in Marine water and ocean, constitute the marine environment to human survival and development important in inhibiting.Seawater movement is the core content of marine environment, will understand the water flow velocity and average water data on flows that will obtain this region in depth to the seawater movement of maritime province.
At present, to the main observation adopting single-point invasive of water flow velocity monitoring of maritime province, as means such as acoustic Doppler fluid velocity profile instrument (ADCP), this portable single-point measurement method can only the flow velocity of monitoring probe detectable range, accurately can not reflect the mean flow rate in the marine site in certain limit, or the flow velocity of marine site zones of different within the scope of this, and this employing batch (-type) walk boat observation means cannot measure seawater velocity in real time, spent manpower and materials are more, cost is high, for the river course of some circumstance complications, bay etc., its observation process is easily limited by fishery and shipping, implement very difficulty.
In prior art, also has a kind of device adopting acoustic measurement device to monitor water flow velocity, its principle is by low-frequency sound wave (0.1KHz-10KHz), sound wave penetrates the average water flow speed data that water body obtains this region, it can reach required precision in the scope of a few km to tens kms, but when the water flow velocity of coastal marine site (1km-10km) is measured, then lack of resolution, survey data and can not meet the demands, in addition, adopt ultrasonic measurement water flow velocity, the decay of its intensity of acoustic wave is serious, measuring accuracy is not enough, and equipment needs strict orientation to install (two acoustic signals sensors need accurately to aim at), be restricted along applying in seawater velocity monitoring.
In view of this, the present inventor's especial manufacture goes out a kind of along seawater flow high-frequency acoustic monitoring system and monitoring method thereof, and this case produces thus.
Summary of the invention
The object of the present invention is to provide a kind of along seawater flow high-frequency acoustic monitoring system and monitoring method thereof, it adopts high frequency sound wave can monitor the flow rate of water flow in coastal marine site interior among a small circle, obtain the precise information of this zone leveling flow, overcome the deficiency that frequency acoustic equipment is monitored at maritime province water flow velocity, and install simple, cost is low.
To achieve these goals, technical scheme of the present invention is as follows:
A kind of along seawater flow high-frequency acoustic monitoring system, comprise at least two high-frequency acoustic flow instruments, this high-frequency acoustic flow instrument comprises:
Computing machine control end, computing machine control end generates modulated carrier signal and control signal and is sent to current surveying device, computing machine control end also receives and processes the modulated carrier signal that current surveying device returns, and computing machine control end also transmits control signal to GPS locating module;
GPS locating device, is connected with computing machine control end, and GPS locating device is used for computing machine control end transmitting time signal and positioning signal;
Current surveying device, is connected with computing machine control end, and current surveying device is used for modulated carrier signal and the control signal of receiving computer control end, modulated carrier signal is converted to acoustic signals, and this acoustic signals is sent to this current surveying device or other current surveying devices; This acoustic signals also for receiving the acoustic signals of other current surveying devices, is converted to modulated carrier signal by current surveying device, and this modulated carrier signal is back to computing machine control end.
Further, described current surveying device comprises:
Data collecting card, is connected with computing machine control end, and data collecting card is used for modulated carrier signal and the control signal of receiving computer control end, then this modulated carrier signal is converted to simulating signal, and this simulating signal is sent to transmitting terminal; Data collecting card is also for receiving the simulating signal of receiving end, and then this simulating signal is converted to modulated carrier signal, and this modulated carrier signal is back to computing machine control end;
Transmitting terminal, is connected with data collecting card, and transmitting terminal receives the simulating signal of data acquisition module, this simulating signal is converted to acoustic signals, and this acoustic signals is sent to this current surveying device receiving end or other current surveying device receiving ends;
Receiving end, is connected with data collecting card, and receiving end receives the acoustic signals of this current surveying device or other current surveying devices, this acoustic signals is converted to simulating signal, and simulating signal is sent to data collecting card.
Further, described receiving end is high-frequency reception transducer, and transmitting terminal is high-frequency emission transducer.
Further, between described transmitting terminal and data collecting card, also access output power amplifying circuit, between transmitting terminal and data collecting card, also access power input amplifying circuit and active band-pass filter successively.
Further, described acoustic signals frequency is 20KHz.
A kind of along seawater flow high-frequency acoustic monitoring method, comprise the following steps:
S1: arrange two monitoring stations at the coastal seashore that will monitor, lays a high-frequency acoustic flow instrument at each website;
S2: set wherein that high-frequency acoustic flow instrument is as launching website, another high-frequency acoustic flow instrument is receiving station;
S3: the computing machine control end launching website and receiving station all transmits control signal to GPS locating device, this control signal activates GPS locating device, then GPS locating device with certain frequency to computing machine control end transmitting time signal and positioning signal;
S4: launching the computing machine control end setting monitoring parameter of website, this parameter comprises survey station title, system starts monitoring time, duty, Constructing Chaotic Code length and every code element carrier number, and then computing machine control end sends modulated carrier signal to current surveying device and comprises the control signal of this monitoring parameter information;
S5: modulated carrier signal is converted to acoustic signals and launches this acoustic signals by the current surveying device launching website, the time value of acoustic signals launched in emission compute control end record; The current surveying device of receiving station receives acoustic signals, and this acoustic signals is converted to modulated carrier signal, and finally modulated carrier signal is back to computing machine control end, the computing machine control end record of receiving station receives the time value of this acoustic signals;
S6: the receiving station in setting procedure S2 is for launching website, and to launch website be receiving station, then repeats step S3, S4 and S5.
S7: computing machine control end draws acoustic transit time value according to the time value mutually transmitting and receiving sound wave between its two monitoring stations recorded, and is worth the flow rate of water flow between two monitoring stations according to acoustic transit time.
Further comprising the steps of between step S1 and S2:
S10: respectively fault detect is carried out to each monitoring station, first the internal loopback of acoustic signals is carried out: modulated carrier signal and control signal are sent to current surveying device by the computing machine control end of each monitoring station, modulated carrier signal is converted to acoustic signals and launches this acoustic signals by current surveying device, this current surveying device receives its acoustic signals launched simultaneously, and this acoustic signals is converted to modulated carrier signal, finally modulated carrier signal is back to computing machine control end;
S11: when the testing result of S10 is normal, carry out the internal loopback of acoustic signals between two monitoring stations, namely the current surveying device of first another monitoring station backward of the current surveying device of two monitoring stations launches acoustic signals.
Beneficial effect of the present invention is: the present invention only need lay the high-frequency acoustic flow instrument of two, high-frequency acoustic signals is produced successively by the current surveying device of a wherein high-frequency acoustic flow instrument, this signal transmits in coastal waters, this acoustic signals is received by other high-frequency acoustic flow instruments, and by transmission time of each acoustic signals of computing machine control end record, just can draw accurate flow rate of water flow data according to the transmission time of high frequency sound wave between two high-frequency acoustic flow instruments, and then coastal water flow data can be drawn; The present invention observes relative to traditional single-point invasive, avoid monitoring for a long time on a large scale in ocean, install simple, device requirement amount and layout difficulty are all less, and cost is low, and the present invention is relative to existing ultrasonic measurement method, the acoustic signals of high frequency is marine site travel path is simple among a small circle, decay few, the final data obtained are quick, accurate, accurately aim at without the need to each high-frequency acoustic flow instrument.
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention's high-frequency acoustic flow instrument;
Fig. 2 is structural representation of the present invention;
Fig. 3 is the structural representation of current surveying device of the present invention;
Fig. 4 is the schematic diagram that the present invention is deployed in maritime province.
Embodiment
The one of the present invention's announcement is along seawater flow high-frequency acoustic monitoring system as shown in Figure 1, and comprise at least two high-frequency acoustic flow instruments, this high-frequency acoustic flow instrument comprises:
A kind of along seawater flow high-frequency acoustic monitoring system, comprise at least two high-frequency acoustic flow instruments, this high-frequency acoustic flow instrument comprises:
Computing machine control end, computing machine control end generates modulated carrier signal and control signal and is sent to current surveying device, computing machine control end also receives and processes the modulated carrier signal that current surveying device returns, and computing machine control end also transmits control signal to GPS locating module;
GPS locating device, is connected with computing machine control end, and GPS locating device is used for computing machine control end transmitting time signal and positioning signal;
Current surveying device, is connected with computing machine control end, and current surveying device is used for modulated carrier signal and the control signal of receiving computer control end, modulated carrier signal is converted to acoustic signals, and this acoustic signals is sent to this current surveying device or other current surveying devices; This acoustic signals also for receiving the acoustic signals of other current surveying devices, is converted to modulated carrier signal by current surveying device, and this modulated carrier signal is back to computing machine control end.
In the present embodiment, current surveying device comprises:
Data collecting card, is connected with computing machine control end, and data collecting card is used for modulated carrier signal and the control signal of receiving computer control end, then this modulated carrier signal is converted to simulating signal, and this simulating signal is sent to transmitting terminal; Data collecting card is also for receiving the simulating signal of receiving end, and then this simulating signal is converted to modulated carrier signal, and this modulated carrier signal is back to computing machine control end;
Transmitting terminal, is connected with data collecting card, and transmitting terminal receives the simulating signal of data acquisition module, this simulating signal is converted to acoustic signals, and this sound wave is sent to this current surveying device receiving end or other current surveying device receiving ends;
Receiving end, is connected with data collecting card, and receiving end receives the acoustic signals of this current surveying device or other current surveying devices, this acoustic signals is converted to simulating signal, and simulating signal is sent to data collecting card.
Receiving end high-frequency reception transducer, and transmitting terminal is high-frequency emission transducer.
During current surveying device work: under being in the duty of acoustic emission, after the modulated carrier signal that data collecting card receives computing machine control end and control signal, at the time point of setting, this modulated carrier signal is converted to simulating signal according to control signal, and this simulating signal is sent to transmitting terminal, transmitting terminal receives the simulating signal of data acquisition module and this simulating signal is converted to acoustic signals, and then this acoustic signals is launched by transmitting terminal; Under being in the duty of acoustic receiver, receiving end receives acoustic signals, and then acoustic signals is converted to simulating signal and sends to data collecting card, simulating signal is transferred to modulated carrier signal and is back to computing machine control end by data collecting card.
Output power amplifying circuit is also accessed between transmitting terminal and data collecting card, output power amplifying circuit carries out power amplification to the simulating signal that data collecting card exports, improve signal emissive porwer, also power input amplifying circuit and active band-pass filter is accessed successively between transmitting terminal and data collecting card, power input amplifying circuit carries out power amplification to the signal that receiving end receives, improve the intensity of processing signals, and the effect of active band-pass filter is background noise reduction, namely reduce and be transmitted into and receiving end (high-frequency reception transducer), the noise of current and circuit, reduce its interference to signal, improve data precision.
The acoustic signals frequency that the present embodiment adopts is 20KHz, under this frequency, marine site within the scope of 3km × 3km, by laying two websites (only needing two high-frequency acoustic flow instruments), just can observe and the water flow data of this marine site scope accurately measured for a long time.
As shown in Figure 3, one of the present invention along seawater flow high-frequency acoustic monitoring system when specifically laying, first seashore sets up platform again, GPS locating device is fixed on platform front end, the transmitting terminal of current surveying device and receiving end (high-frequency reception transducer) are arranged in the seawater in platform front, other parts of current surveying device are placed by a cabinet, and platform rear end is then located at by cabinet, and terminal adopts portable computer.
A kind of along seawater flow high-frequency acoustic monitoring method, comprise the following steps:
S1: arrange two monitoring stations at the coastal seashore that will monitor, lays a high-frequency acoustic flow instrument at each website;
S2: set wherein that high-frequency acoustic flow instrument is as launching website, another high-frequency acoustic flow instrument is receiving station;
S3: the computing machine control end launching website and receiving station all transmits control signal to GPS locating device, this control signal activates GPS locating device, then GPS locating device with certain frequency to computing machine control end transmitting time signal and positioning signal;
S4: launching the computing machine control end setting monitoring parameter of website, this parameter comprises survey station title, system starts monitoring time, duty, Constructing Chaotic Code length and every code element carrier number, and then computing machine control end sends modulated carrier signal to current surveying device and comprises the control signal of this monitoring parameter information;
S5: modulated carrier signal is converted to acoustic signals and launches this acoustic signals by the current surveying device launching website, the time value of acoustic signals launched in emission compute control end record; The current surveying device of receiving station receives acoustic signals, and this acoustic signals is converted to modulated carrier signal, and finally modulated carrier signal is back to computing machine control end, the computing machine control end record of receiving station receives the time value of this acoustic signals;
S6: the receiving station in setting procedure S2 is for launching website, and to launch website be receiving station, then repeats step S3, S4 and S5.
S7: computing machine control end draws acoustic transit time value according to the time value mutually transmitting and receiving sound wave between its two monitoring stations recorded, and is worth the flow rate of water flow between two monitoring stations according to acoustic transit time.
Obtaining high frequency sound wave transmission time value between two monitoring stations in coastal marine site is key of the present invention, water flow makes the time of mutually transmitting sound wave occur difference, this mistiming just can draw flow rate of water flow in conjunction with sonic transmissions speed, thus obtains the discharge in a period of time.
Further, further comprising the steps of between described step S1 and S2:
S10: respectively fault detect is carried out to each monitoring station, first the internal loopback of acoustic signals is carried out: modulated carrier signal and control signal are sent to current surveying device by the computing machine control end of each monitoring station, modulated carrier signal is converted to acoustic signals and launches this acoustic signals by current surveying device, this current surveying device receives its acoustic signals launched simultaneously, and this acoustic signals is converted to modulated carrier signal, finally modulated carrier signal is back to computing machine control end;
S11: when the testing result of S10 is normal, carry out the internal loopback of acoustic signals between two monitoring stations, namely the current surveying device of first another monitoring station backward of the current surveying device of two monitoring stations launches acoustic signals.Step S10 and S11 guarantees the stable operation of detection system.
The present invention has following advantage: the present invention only need lay the high-frequency acoustic flow instrument of two, high-frequency acoustic signals is produced successively by the current surveying device of a wherein high-frequency acoustic flow instrument, this signal transmits in coastal waters, this acoustic signals is received by other high-frequency acoustic flow instruments, and by transmission time of each acoustic signals of computing machine control end record, just can draw accurate flow rate of water flow data according to the transmission time of high frequency sound wave between two high-frequency acoustic flow instruments, and then coastal water flow data can be drawn; The present invention observes relative to traditional single-point invasive, avoid monitoring for a long time on a large scale in ocean, install simple, device requirement amount and layout difficulty are all less, and cost is low, and the present invention is relative to existing ultrasonic measurement method, the acoustic signals of high frequency is marine site travel path is simple among a small circle, decay few, the final data obtained are quick, accurate, accurately aim at without the need to each high-frequency acoustic flow instrument.
Certainly, when needed, the high-frequency acoustic flow instrument of more than two can be disposed, to gather the data on flows that the same period returns to more greatly marine site simultaneously.
These are only specific embodiments of the invention, the restriction not to protection scope of the present invention.All equivalent variations done according to the mentality of designing of this case, all fall into the protection domain of this case.
Claims (7)
1. along a seawater flow high-frequency acoustic monitoring system, it is characterized in that: comprise at least two high-frequency acoustic flow instruments, this high-frequency acoustic flow instrument comprises:
Computing machine control end, computing machine control end generates modulated carrier signal and control signal and is sent to current surveying device, computing machine control end also receives and processes the modulated carrier signal that current surveying device returns, and computing machine control end also transmits control signal to GPS locating module;
GPS locating device, is connected with computing machine control end, and GPS locating device is used for computing machine control end transmitting time signal and positioning signal;
Current surveying device, is connected with computing machine control end, and current surveying device is used for modulated carrier signal and the control signal of receiving computer control end, modulated carrier signal is converted to acoustic signals, and this acoustic signals is sent to this current surveying device or other current surveying devices; This acoustic signals also for receiving the acoustic signals of other current surveying devices, is converted to modulated carrier signal by current surveying device, and this modulated carrier signal is back to computing machine control end.
2. as claimed in claim 1 a kind of along seawater flow high-frequency acoustic monitoring system, it is characterized in that: described current surveying device comprises:
Data collecting card, is connected with computing machine control end, and data collecting card is used for modulated carrier signal and the control signal of receiving computer control end, then this modulated carrier signal is converted to simulating signal, and this simulating signal is sent to transmitting terminal; Data collecting card is also for receiving the simulating signal of receiving end, and then this simulating signal is converted to modulated carrier signal, and this modulated carrier signal is back to computing machine control end;
Transmitting terminal, is connected with data collecting card, and transmitting terminal receives the simulating signal of data acquisition module, this simulating signal is converted to acoustic signals, and this acoustic signals is sent to this current surveying device receiving end or other current surveying device receiving ends;
Receiving end, is connected with data collecting card, and receiving end receives the acoustic signals of this current surveying device or other current surveying devices, this acoustic signals is converted to simulating signal, and simulating signal is sent to data collecting card.
3. as claimed in claim 2 a kind of along seawater flow high-frequency acoustic monitoring system, it is characterized in that: described receiving end is high-frequency reception transducer, transmitting terminal is high-frequency emission transducer.
4. as claimed in claim 2 a kind of along seawater flow high-frequency acoustic monitoring system, it is characterized in that: between described transmitting terminal and data collecting card, also access output power amplifying circuit, between transmitting terminal and data collecting card, also access power input amplifying circuit and active band-pass filter successively.
5. as claimed in claim 2 a kind of along seawater flow high-frequency acoustic monitoring system, it is characterized in that: described acoustic signals frequency is 20KHz.
6., along a seawater flow high-frequency acoustic monitoring method, it is characterized in that, comprise the following steps:
S1: arrange two monitoring stations at the coastal seashore that will monitor, lays a high-frequency acoustic flow instrument at each website;
S2: set wherein that high-frequency acoustic flow instrument is as launching website, another high-frequency acoustic flow instrument is receiving station;
S3: the computing machine control end launching website and receiving station all transmits control signal to GPS locating device, this control signal activates GPS locating device, then GPS locating device with certain frequency to computing machine control end transmitting time signal and positioning signal;
S4: launching the computing machine control end setting monitoring parameter of website, this parameter comprises survey station title, system starts monitoring time, duty, Constructing Chaotic Code length and every code element carrier number, and then computing machine control end sends modulated carrier signal to current surveying device and comprises the control signal of this monitoring parameter information;
S5: modulated carrier signal is converted to acoustic signals and launches this acoustic signals by the current surveying device launching website, the time value of acoustic signals launched in emission compute control end record; The current surveying device of receiving station receives acoustic signals, and this acoustic signals is converted to modulated carrier signal, and finally modulated carrier signal is back to computing machine control end, the computing machine control end record of receiving station receives the time value of this acoustic signals;
S6: the receiving station in setting procedure S2 is for launching website, and to launch website be receiving station, then repeats step S3, S4 and S5;
S7: computing machine control end draws acoustic transit time value according to the time value mutually transmitting and receiving sound wave between its two monitoring stations recorded, and is worth the flow rate of water flow between two monitoring stations according to acoustic transit time.
7. as claimed in claim 6 a kind of along seawater flow high-frequency acoustic monitoring method, it is characterized in that: further comprising the steps of between described step S1 and S2:
S10: respectively fault detect is carried out to each monitoring station, first the internal loopback of acoustic signals is carried out: modulated carrier signal and control signal are sent to current surveying device by the computing machine control end of each monitoring station, modulated carrier signal is converted to acoustic signals and launches this acoustic signals by current surveying device, this current surveying device receives its acoustic signals launched simultaneously, and this acoustic signals is converted to modulated carrier signal, finally modulated carrier signal is back to computing machine control end;
S11: when the testing result of S10 is normal, carry out the internal loopback of acoustic signals between two monitoring stations, namely the current surveying device of first another monitoring station backward of the current surveying device of two monitoring stations launches acoustic signals.
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Application publication date: 20151223 |