CN211574791U - Water leakage detection sensing device for underground water supply pipeline - Google Patents
Water leakage detection sensing device for underground water supply pipeline Download PDFInfo
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- CN211574791U CN211574791U CN201921725192.7U CN201921725192U CN211574791U CN 211574791 U CN211574791 U CN 211574791U CN 201921725192 U CN201921725192 U CN 201921725192U CN 211574791 U CN211574791 U CN 211574791U
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Abstract
The utility model discloses an underground water supply pipe leaks and detects sensing device, including piezoelectric sensor, filter amplifier, AD converter and the wireless transmitter that connects gradually the electricity, piezoelectric sensor, filter amplifier, AD converter and wireless transmitter are by mains operated, and filter amplifier is including electric filter, charge amplifier, programme-controlled amplifier and the impedance converter who connects gradually, and electric filter and piezoelectric sensor electricity are connected, and impedance converter and AD converter electricity are connected. The utility model is simple in operation swift, can realize fast that water supply pipe state detects and with testing result automatic transmission, the remote control of being convenient for has practiced thrift a large amount of manpowers, and the detection accuracy is higher with sensitivity, has improved detection efficiency.
Description
Technical Field
The utility model relates to the technical field of pipeline, concretely relates to underground water supply pipe leaks and detects sensing device.
Background
The water leakage detection of the water supply pipeline is mainly realized by manually detecting the existing detection sensing equipment, but the operation difficulty of the existing detection sensing equipment is high, the detection process needs to consume great manpower, and the detection efficiency and the accuracy are low.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a water supply pipe leaks and detects sensing device underground, and the operation of being convenient for does benefit to and practices thrift the manpower and improves detection efficiency and the degree of accuracy.
In order to solve the technical problem, the utility model provides a technical scheme as follows:
the utility model provides an underground water supply pipe leaks and detects sensing device, includes piezoelectric sensor, filter amplifier, AD converter and the wireless transmitter that connects gradually the electricity, piezoelectric sensor, filter amplifier, AD converter and wireless transmitter are by the power supply, filter amplifier is including electric filter, charge amplifier, programme-controlled amplifier and the impedance transformer that connects gradually, the wave filter with piezoelectric sensor electricity is connected, the impedance transformer with the AD converter electricity is connected.
In one embodiment, the wireless transmitter employs an NB-IoT wireless transmitter.
In one embodiment, the piezoelectric sensor is a piezoelectric polycrystalline sensor or a piezoelectric single crystal sensor.
In one embodiment, the piezoelectric sensor, the filter amplifier, the AD converter, the wireless transmitter and the power supply package form a sensing body, the sensing body is connected with the protective cover, and the sensing body is located inside the protective cover.
In one embodiment, an acoustic insulation wool is filled between the protective cover and the sensing body.
In one embodiment, the protective cover is a metal cover.
In one embodiment, the metal cover is a stainless steel metal cover.
In one embodiment, the amplification factor of the programmable amplifier is 10-200 times.
The utility model discloses following beneficial effect has: the underground water supply pipeline of this embodiment leaks and detects sensing device, easy operation is swift, can realize fast that water supply pipeline state detects and passes through wireless transmitter automatic transmission with the testing result, and the remote control of being convenient for has practiced thrift a large amount of manpowers, need not the manual work and patrols and examines, and detection accuracy and sensitivity are higher, have improved detection efficiency greatly.
Drawings
Fig. 1 is a block diagram of the water supply pipeline water leakage detection sensor of the present invention.
Detailed Description
The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.
As shown in fig. 1, the present embodiment discloses a water leakage detection sensing device for an underground water supply pipeline, which includes a piezoelectric sensor, a filter amplifier, an AD converter and a wireless transmitter electrically connected in sequence, wherein the piezoelectric sensor, the filter amplifier, the AD converter and the wireless transmitter are all powered by a power supply, the filter amplifier includes a filter, a charge amplifier, a program control amplifier and an impedance transformer electrically connected in sequence, the filter is electrically connected with the piezoelectric sensor, and the impedance transformer is electrically connected with the AD converter.
The piezoelectric sensor is used for detecting vibration signals of the pipeline, and can adopt a CA-YD-122 type sensor, and the sensor has the advantages of wide frequency response, high sensitivity, small transverse sensitivity and strong external interference resistance.
The filter amplifier is used for converting and conditioning signals detected by the piezoelectric sensor, and after weak charge signals pass through links such as conversion, program-controlled gain amplification and impedance matching, the amplitude of the weak charge signals is enabled to be in a good dynamic range and a good signal-to-noise ratio before entering the AD converter.
The wireless transmitter is used for transmitting the signal data converted by the AD converter in a wireless communication mode, and remote control is facilitated.
Above-mentioned detection sensing device leaks utilizes piezoelectric sensor to acquire pipeline vibration signal to turn into analog signal of telecommunication with vibration signal, and turn into digital signal after amplifying analog signal of telecommunication through the filtering, at last with this digital signal through the transmission away.
In one embodiment, the wireless transmitter is an NB-IoT (Narrow Band Internet of things) wireless transmitter, and the transmission efficiency and the transmission reliability are high. The wireless transmitter is a serial port wireless transmitter.
In one embodiment, the a/D conversion chip used by the AD converter is a MAX186 chip, which uses 12-bit sampling, 5V power supply and low power consumption, and transmits AD sampling data by using an SPI compatible serial interface.
In one embodiment, the piezoelectric sensor is a piezoelectric polycrystalline sensor or a piezoelectric single crystal sensor, so as to ensure high sensitivity and reliability.
In one embodiment, the charge amplifier is mainly composed of an amplifier feedback capacitor, a drain resistor connected in parallel to two ends of the feedback capacitor, an input resistor and a first operational amplifier, and is used for realizing conversion from a charge signal to a voltage signal, wherein the first operational amplifier can adopt an OP227 operational amplifier; the program control amplifier mainly comprises a second operational amplifier, a feedback resistor, an input resistor and an analog switch to realize the amplification processing of signals, wherein the second operational amplifier can adopt a TL062 operational amplifier. The analog switch adopts a 74HC4052 analog switch; the impedance converter is mainly used for forming a follower through an OP227 operational amplifier, converting a signal before an ADC, and performing impedance matching conversion of a circuit so as to ensure the conversion precision of the AD converter.
In one embodiment, the sensing device for detecting water leakage of the underground water supply pipeline further comprises a protective cover, the piezoelectric sensor, the filter amplifier, the AD converter, the wireless transmitter and the power supply package form a sensing main body, the sensing main body is connected with the protective cover, the sensing main body is located inside the protective cover to protect the sensing main body, and particularly when the sensing device is buried in the underground water supply pipeline, the protective cover can effectively protect the sensing main body from being interfered by the external environment, so that the detection sensitivity and accuracy of the sensing main body are guaranteed.
In one embodiment, soundproof cotton is filled between the protective cover and the sensing body to achieve a noise reduction effect.
In one embodiment, the protective cover is a metal cover.
In one embodiment, the metal cover is a stainless steel metal cover to ensure the corrosion prevention effect.
In one embodiment, the amplification factor of the programmable amplifier is 10 to 200 times, for example, 10 times, 30 times, 50 times, 100 times, etc.
The underground water supply pipeline of this embodiment leaks and detects sensing device when using, only needs to detect the sensing device with above-mentioned leaking and install the detection that can carry out the detection of pipeline signal and the automatic transmission of signal on the pipeline outer wall. When arranging, can carry out the cloth point formula network deployment in the delivery pipe network, equipartition sets up above-mentioned sensing device promptly on a plurality of delivery pipes to the information collection through a plurality of detection sensing device compares the analysis, carries out the judgement of pipeline leakage position, can practice thrift a large amount of manpowers, through the industry internet, can realize the remote monitoring of district interior pipeline, is convenient for in time discover the pipeline leakage problem.
The underground water supply pipeline of this embodiment leaks and detects sensing device, easy operation is swift, can realize fast that water supply pipeline state detects and passes through wireless transmitter automatic transmission with the testing result, and the remote control of being convenient for has practiced thrift a large amount of manpowers, need not the manual work and patrols and examines, and detection accuracy and sensitivity are higher, have improved detection efficiency greatly.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.
Claims (8)
1. The utility model provides an underground water supply pipe leaks and detects sensing device which characterized in that, including piezoelectric sensor, filter amplifier, AD converter and the wireless transmitter that connects gradually the electricity, piezoelectric sensor, filter amplifier, AD converter and wireless transmitter are by the power supply, filter amplifier is including electric filter, charge amplifier, programme-controlled amplifier and the impedance transformer that connects gradually, the filter with piezoelectric sensor electricity is connected, the impedance transformer with AD converter electricity is connected.
2. The groundwater supply pipeline water leak detection sensing device as claimed in claim 1, wherein the wireless transmitter is an NB-IoT wireless transmitter.
3. The water leakage detection sensor assembly of claim 1, wherein said piezoelectric sensor is a piezoelectric polycrystalline sensor or a piezoelectric single crystal sensor.
4. The water leakage detection sensing device of claim 1, further comprising a protective cover, wherein the piezoelectric sensor, the filter amplifier, the AD converter, the wireless transmitter and the power package form a sensing body, the sensing body is connected to the protective cover, and the sensing body is located inside the protective cover.
5. The water leakage detection sensor of claim 4, wherein sound insulation wool is filled between said protective cover and said sensor body.
6. The water leakage detection sensor assembly of claim 4, wherein said protective cover is a metal cover.
7. The water leakage detection sensor assembly of claim 6, wherein said metal cover is a stainless steel metal cover.
8. The water leakage detection sensor device of claim 1, wherein the amplification factor of said programmable amplifier is 10-200 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921725192.7U CN211574791U (en) | 2019-10-15 | 2019-10-15 | Water leakage detection sensing device for underground water supply pipeline |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921725192.7U CN211574791U (en) | 2019-10-15 | 2019-10-15 | Water leakage detection sensing device for underground water supply pipeline |
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| CN211574791U true CN211574791U (en) | 2020-09-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI804093B (en) * | 2021-12-09 | 2023-06-01 | 財團法人工業技術研究院 | Method and system for underground pipe leak detection |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI804093B (en) * | 2021-12-09 | 2023-06-01 | 財團法人工業技術研究院 | Method and system for underground pipe leak detection |
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