CN205480217U - Water supply pipe leaks positioning system based on GPRS network - Google Patents

Abstract

The utility model belongs to the technical field of water tube leakage location finding technique and specifically relates to a water supply pipe leaks positioning system based on GPRS network. It includes a plurality of water tube leakage detection module and host computer, and every water tube leakage detection module includes amplifier circuit, filter circuit, singlechip, drive circuit, LED pilot lamp, memory, GPRS module and two resonant transducer. The utility model discloses utilize the resonant transducer acquisition frequency signal, carried out leakage position's location according to the difference of signal, simultaneously, the signal that utilizes amplifier circuit and filter circuit to gather is taked care of, utilizes the LED pilot lamp to carry out status display, and, utilize the GPRS module to realize that the remote data of signal transmits, make things convenient for the long -range information reading of staff, its simple structure, convenient operation has very strong practicality.

Description

A kind of water pipeline leakage locating system based on GPRS network

Technical field

This utility model relates to pipe leakage field of locating technology, and a kind of water supply line based on GPRS network is let out Leakage alignment system.

Background technology

Affected greatly it is known that water supply line is embedded in underground throughout the year by variation in water pressure and weather environment change, pipeline easily quilt Corrode and leak.This phenomenon not only wastes the freshwater resources that China is valuable, also can be to building on the ground and public set Execute and bring serious destruction, find water supply line leakage point position the most in time and carry out processing important realistic meaning.

Utility model content

For above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide a kind of based on GPRS network Water pipeline leakage locating system.

To achieve these goals, this utility model adopts the following technical scheme that

A kind of water pipeline leakage locating system based on GPRS network, it include several pipe leakage detection modules and Host computer, each described pipe leakage detection module includes that amplifying circuit, filter circuit, single-chip microcomputer, drive circuit, LED indicate Lamp, memorizer, GPRS module and two resonant transducers；

Two described resonant transducers are placed in respectively on water pipe and input the frequency signal detected to amplifying electricity Road, signal is amplified and inputs a signal into filter circuit by described amplifying circuit, and signal is filtered by described filter circuit Ripple also inputs a signal into single-chip microcomputer, and signal is carried out arranging and signal feeding back to drive circuit, memorizer by described single-chip microcomputer And GPRS module, described drive circuit produces and drives signal and input a signal into LED light, and described GPRS module is by signal Sent to host computer by GPRS network.

Preferably, described amplifying circuit includes AD620 amplifier, the first adjustable resistance and the second adjustable resistance, two institutes State one of them of resonant transducer by the first resistance is connected with 3 end feet of AD620 amplifier, another is adjustable with second The adjustable end of resistance connects, and the fixing end of described second adjustable resistance is connected with 1 end foot of AD620 amplifier, and described AD620 is put 2 end feet of big device are by the second resistance eutral grounding, and 5 end feet of described AD620 amplifier are by the 3rd resistance eutral grounding and by the 6th The adjustable end of resistance and the first adjustable resistance connects, and the fixing of described first adjustable resistance terminates into power supply, and described AD620 amplifies The outfan of device is connected with filter circuit by the 4th resistance, is connect by the 5th resistance between described 4th resistance and filter circuit Ground.

Preferably, described filter circuit includes the first amplifier and the second amplifier, and the in-phase end of described first amplifier is by the Two capacity earths the 8th resistance and the 7th resistance by being sequentially connected in series are connected with amplifying circuit, described 8th resistance and the 7th Being connected by the end of oppisite phase of the first electric capacity and the first amplifier between resistance, the outfan of described first amplifier passes through to be sequentially connected in series The end of oppisite phase of the 3rd electric capacity and the 4th electric capacity and the second amplifier connects, by the 9th electricity between described 3rd electric capacity and the 4th electric capacity Resistance is connected with the in-phase end of the second amplifier, and the end of oppisite phase of described second amplifier passes through the tenth resistance eutral grounding, described second amplifier Outfan is connected with single-chip microcomputer.

Preferably, described single-chip microcomputer is A789S52 single-chip microcomputer, and described first amplifier and the second amplifier are NE5532 computing Amplifier.

Owing to have employed such scheme, this utility model utilizes resonant transducer frequency acquisition signal, according to signal Difference has carried out the location of leak position；Meanwhile, amplifying circuit and filter circuit is utilized to be nursed one's health by the signal collected, profit Carry out state by LED light to show；Further, utilize GPRS module to realize the remote data transmission of signal, facilitate staff Remote information reads, and its simple in construction is easy to operate, is very practical.

Accompanying drawing explanation

Fig. 1 is the structural principle schematic diagram of this utility model embodiment；

Fig. 2 is the electrical block diagram of the amplifying circuit of this utility model embodiment；

Fig. 3 is the electrical block diagram of the filter circuit of this utility model embodiment；

Fig. 4 is the operation principle schematic diagram of the resonant transducer of this utility model embodiment.

Detailed description of the invention

Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but this utility model can be by right Require that the multitude of different ways limiting and covering is implemented.

As shown in Figures 1 to 4, a kind of based on GPRS network the water pipeline leakage locating system that the present embodiment provides, It include several pipe leakage detection modules 10 and host computer 9, each pipe leakage detection module 10 include amplifying circuit 2, Filter circuit 3, single-chip microcomputer 4, drive circuit 6, LED light 7, memorizer 5, GPRS module 8 and two resonant transducers 1；

Two resonant transducers 1 are placed in respectively on water pipe and input the frequency signal detected to amplifying circuit 2, Signal is amplified and inputs a signal into filter circuit 3 by amplifying circuit 3, and signal is filtered and by letter by filter circuit 3 Number input to single-chip microcomputer 4, signal is carried out arranging and fed back to by signal drive circuit 6, memorizer 5 and GPRS mould by single-chip microcomputer 4 Block 8, drive circuit 6 produces and drives signal and input a signal into LED light 7, and signal is passed through GPRS network by GPRS module 8 Send to host computer 9.

Further, single-chip microcomputer 4 is A789S52 single-chip microcomputer.

The present embodiment utilizes resonant transducer 1 frequency acquisition signal, has carried out leak position according to the difference of signal Location；Meanwhile, utilize amplifying circuit 2 and filter circuit 3 to be nursed one's health by the signal collected, utilize LED light 7 to carry out shape State shows, utilizes memorizer 5 to carry out data storage；Further, GPRS module 9 is utilized to realize the remote data transmission of signal, side Just staff's remote information reads.

The detection work of the resonant transducer 1 of the present embodiment as shown in Figure 4, when water supply line leaks, spills The water of pipeline can rub with leak, and surrounding medium produces grating as well as current, and these collisions or friction all can be produced The vibration of raw different frequency, thus produce the sound that leaks.Located in connection leak detection uses two resonant transducers 1 at pipeline two exactly End collection is leaked acoustical signal, the two paths of signals collected then carries out related operation to determine leak source, and in Fig. 4, L is tested The length of pipeline, A, B are resonant transducer location, and C is leakage point, and L1, L2 are respectively leak source and sense away from resonant mode The expelling of device (assume L1 > L2), to is the time difference of two resonant transducer leakage signals, and V is the propagation speed of sound in pipeline Degree.Therefore C point position can be calculated by equation below:

$\begin{array}{c}{L}_1=\frac{L-t0\×V}{2}\\ L_2=\frac{L+t0\×V}{2}\end{array}---\left(1\right).$

The amplifying circuit 2 of the present embodiment can use circuit structure as shown in Figure 2, i.e. include AD620 amplifier A1, first Adjustable resistance RX1 and the second adjustable resistance RX2, one of them of two resonant transducers 1 passes through the first resistance R1 and AD620 The 3 end feet of amplifier A1 connect, another is connected with the adjustable end of the second adjustable resistance RX2, and the second adjustable resistance RX2's is fixing End is connected with the 1 end foot of AD620 amplifier A1, and the 2 end feet of AD620 amplifier A1 pass through the second resistance R2 ground connection, and AD620 amplifies The 5 end feet of device A1 connect by the 3rd resistance R3 ground connection and by the adjustable end of the 6th resistance R6 and the first adjustable resistance RX1, the The fixing of one adjustable resistance RX1 terminates into power supply, and the outfan of AD620 amplifier A1 is by the 4th resistance R4 and filter circuit 3 Connect, by the 5th resistance R5 ground connection between the 4th resistance R4 and filter circuit 3.

The filter circuit 3 of the present embodiment can use circuit structure as shown in Figure 3, i.e. includes the first amplifier U1 and the second fortune Putting U2, the in-phase end of the first amplifier A1 is by the second electric capacity C2 ground connection and by the 8th resistance R8 being sequentially connected in series and the 7th resistance R7 is connected with amplifying circuit 2, anti-phase by the first electric capacity C1 and the first amplifier U1 between the 8th resistance R8 and the 7th resistance R7 End connects, and the outfan of the first amplifier U2 is anti-by the 3rd electric capacity C3 that is sequentially connected in series and the 4th electric capacity C4 and the second amplifier U2 Hold connection mutually, connected by the in-phase end of the 9th resistance R9 and the second amplifier U2 between the 3rd electric capacity C3 and the 4th electric capacity C4, the The end of oppisite phase of two amplifiers U2 passes through the tenth resistance R10 ground connection, and the outfan of the second amplifier U2 is connected with single-chip microcomputer 4.Wherein, first Amplifier U1 and the second amplifier U2 are NE5532 operational amplifier.

The foregoing is only preferred embodiment of the present utility model, not thereby limit the scope of the claims of the present utility model, Every equivalent structure utilizing this utility model description and accompanying drawing content to be made or equivalence flow process conversion, or directly or indirectly transport It is used in other relevant technical fields, is the most in like manner included in scope of patent protection of the present utility model.

Claims (4)

1. a water pipeline leakage locating system based on GPRS network, it includes several pipe leakage detection modules and upper Position machine, it is characterised in that: each described pipe leakage detection module includes amplifying circuit, filter circuit, single-chip microcomputer, driving electricity Road, LED light, memorizer, GPRS module and two resonant transducers；

Two described resonant transducers are placed in respectively on water pipe and input the frequency signal detected to amplifying circuit, institute Stating amplifying circuit to be amplified by signal and input a signal into filter circuit, signal is filtered and incites somebody to action by described filter circuit Signal inputs to single-chip microcomputer, and signal is carried out arranging and signal feeding back to drive circuit, memorizer and GPRS by described single-chip microcomputer Module, described drive circuit produces and drives signal and input a signal into LED light, and signal is passed through by described GPRS module GPRS network sends to host computer.

A kind of water pipeline leakage locating system based on GPRS network, it is characterised in that: described Amplifying circuit includes AD620 amplifier, the first adjustable resistance and the second adjustable resistance, and two described resonant transducers are wherein One by the first resistance is connected with 3 end feet of AD620 amplifier, another is connected with the adjustable end of the second adjustable resistance, institute 1 end foot of the fixing end and AD620 amplifier of stating the second adjustable resistance is connected, and 2 end feet of described AD620 amplifier pass through second Resistance eutral grounding, 5 end feet of described AD620 amplifier are by the 3rd resistance eutral grounding and pass through the 6th resistance and the first adjustable resistance Adjustable end connects, and the fixing of described first adjustable resistance terminates into power supply, and the outfan of described AD620 amplifier is by the 4th electricity Resistance is connected with filter circuit, by the 5th resistance eutral grounding between described 4th resistance and filter circuit.

A kind of water pipeline leakage locating system based on GPRS network, it is characterised in that: described Filter circuit includes the first amplifier and the second amplifier, and the in-phase end of described first amplifier is by the second capacity earth and by successively 8th resistance and the 7th resistance of series connection are connected with amplifying circuit, by the first electric capacity between described 8th resistance and the 7th resistance Being connected with the end of oppisite phase of the first amplifier, the outfan of described first amplifier is by the 3rd electric capacity being sequentially connected in series and the 4th electric capacity It is connected with the end of oppisite phase of the second amplifier, by the 9th resistance and the homophase of the second amplifier between described 3rd electric capacity and the 4th electric capacity End connects, and the end of oppisite phase of described second amplifier passes through the tenth resistance eutral grounding, and the outfan of described second amplifier is connected with single-chip microcomputer.

A kind of water pipeline leakage locating system based on GPRS network, it is characterised in that: described Single-chip microcomputer is A789S52 single-chip microcomputer, and described first amplifier and the second amplifier are NE5532 operational amplifier.