CN205484848U - City underground metal pipeline detecting device - Google Patents

Abstract

The utility model discloses a city underground metal pipeline detecting device, wherein toroidal coil, rubidium atomic frequency standard and anti -aliasing filter ware pass through circuit and VLF signal reception module electric connection respectively, and image displaying module, phase place range capture card and equivalent depth capture card pass through circuit and micro - processing module electric connection respectively, and the electronic display ware passes through circuit and image displaying module electric connection. The utility model discloses simple structure, convenient to use and low cost, its working method is nimble, and measurement accuracy is higher.

Description

A kind of Urban Underground detecting metal pipeline device

Technical field

This utility model belongs to Underpipes Lnformation System detection device technique field, is specifically related to a kind of Urban Underground detecting metal pipeline device.

Background technology

In recent years, along with China's urban construction, the needs of scientific development, need underground metal pipeline layout is made to detect more accurately.Underground metal pipeline just as collaterals of human, the crisscross nerve in city and blood circulation.But due to historical reasons, China's numerous City Buried Pipeline data is the most complete, or data accuracy is the highest and many places are not inconsistent with present situation, cause in Engineering operation or construction and underground utilities malicious event occurs, thus initiation is cut off the water, has a power failure, is stopped the supple of gas or steam, communicating interrupt, the multiple accident such as fire and blast, the urban life comfortable to people has put on " inhibition ", more inconvenience occurs.Therefore, in the urgent need to developing high-precision underground metal pipeline Detection Techniques, also it is simultaneously the Technology Times foundation stone of setting up Urban Underground comprehensive pipeline data storehouse.At present, domestic a lot of R&D institution, institution of higher education and big companies successively successfully develop all kinds of model underground metal pipeline detection device, but the restriction due to resource Yu technology, underground metal pipeline detection device is the most ripe, function singleness, kind is less, and precision is not high enough, and it is the most convenient to operate.For adapting to rapid construction, engineering danger minimum, the needs of detection accuracy raising, the Electromagnetic Survey of Underground Pipelines device developing the advantage such as a kind of flexible working mode, higher, the engineering economy of certainty of measurement is imperative.

Summary of the invention

This utility model solves the technical problem that and there is provided a kind of Urban Underground detecting metal pipeline device mainly utilizing eddy current effect to combine with signal microprocessing.

nullThis utility model adopts the following technical scheme that for solving above-mentioned technical problem，A kind of Urban Underground detecting metal pipeline device，It is characterized in that mainly having signal receiving unit、Signal processing unit、Signal output unit and power supply are constituted，This signal receiving unit、Signal processing unit and signal output unit are electrically connected with power supply by circuit respectively，Described signal receiving unit includes VLF signal receiving module、Loop coil、Rb atom frequency marking and frequency overlapped-resistable filter，Wherein loop coil、Rb atom frequency marking and frequency overlapped-resistable filter are electrically connected with VLF signal receiving module by circuit respectively，Loop coil receives for antenna，Also it is the emission source of current vortex induction coil simultaneously，Rb atom frequency marking is for exporting stable pulse signal in shaping circuit，Stable 48KHz acquisition pulse is provided for follow-up micro treatment module，It is easy to signal processing，Frequency overlapped-resistable filter is used for docking the collection of letters number and carries out frequency range filtering and filter out effective VLF signal；Described signal processing unit includes micro treatment module, image display, phase amplitude capture card and equivalent depth capture card, wherein image display, phase amplitude capture card and equivalent depth capture card are electrically connected with by circuit and micro treatment module respectively, and phase amplitude capture card and equivalent depth capture card are for the amplitude of very low frequency signal and the collection of phase changing capacity and the collection to underground wire coil institute buried depth degree equivalence value；Described signal output unit includes electronic displays, and this electronic displays is electrically connected with image display by circuit.

This utility model simple in construction, easy to use and with low cost, its flexible working mode, certainty of measurement is higher.

Accompanying drawing explanation

Fig. 1 is circuit connection diagram of the present utility model；

Fig. 2 is toroidal eddy current effect displaying figure in this utility model.

Detailed description of the invention

Particular content of the present utility model is described in detail in conjunction with accompanying drawing.nullA kind of Urban Underground detecting metal pipeline device，Mainly there is signal receiving unit、Signal processing unit、Signal output unit and power supply are constituted，This signal receiving unit、Signal processing unit and signal output unit are electrically connected with power supply by circuit respectively，Described signal receiving unit includes VLF signal receiving module、Loop coil、Rb atom frequency marking and frequency overlapped-resistable filter，Wherein loop coil、Rb atom frequency marking and frequency overlapped-resistable filter are electrically connected with VLF signal receiving module by circuit respectively，Loop coil receives for antenna，Also it is the emission source of current vortex induction coil simultaneously，Rb atom frequency marking is for exporting stable pulse signal in shaping circuit，Stable 48KHz acquisition pulse is provided for follow-up micro treatment module，It is easy to signal processing，Frequency overlapped-resistable filter is used for docking the collection of letters number and carries out frequency range filtering and filter out effective VLF signal；Described signal processing unit includes micro treatment module, image display, phase amplitude capture card and equivalent depth capture card, wherein image display, phase amplitude capture card and equivalent depth capture card are electrically connected with by circuit and micro treatment module respectively, and phase amplitude capture card and equivalent depth capture card are for the amplitude of very low frequency signal and the collection of phase changing capacity and the collection to underground wire coil institute buried depth degree equivalence value；Described signal output unit includes electronic displays, and this electronic displays is electrically connected with image display by circuit.

Operation principle of the present utility model is: be first turned on and off switch, make VLF signal receiving module in running order, after signal stabilization, there is electromagnetic induction in loop coil self, travel downward runs into metal pipe line and forms current vortex, now micro treatment module can receive current vortex signal by equivalent depth capture card collection, has current intensity to calculate subterranean depth.Simultaneously, VLF signal receiving module can receive phase place and the amplitude of electromagnetic signal, the trend of metal pipe line can be finally inversed by by the variable quantity of micro treatment module calculating amplitude and phase place, finally shown by electronic displays via image display, make operation convenient directly perceived.

Of the present utility model ultimate principle has more than been shown and described; principal character and advantage; on the premise of without departing from this utility model spirit and scope, this utility model also has various changes and modifications, and these changes and improvements both fall within claimed scope of the present utility model.

Claims (1)

1. null1. a Urban Underground detecting metal pipeline device，It is characterized in that mainly having signal receiving unit、Signal processing unit、Signal output unit and power supply are constituted，This signal receiving unit、Signal processing unit and signal output unit are electrically connected with power supply by circuit respectively，Described signal receiving unit includes VLF signal receiving module、Loop coil、Rb atom frequency marking and frequency overlapped-resistable filter，Wherein loop coil、Rb atom frequency marking and frequency overlapped-resistable filter are electrically connected with VLF signal receiving module by circuit respectively，Loop coil receives for antenna，Also it is the emission source of current vortex induction coil simultaneously，Rb atom frequency marking is for exporting stable pulse signal in shaping circuit，Stable 48KHz acquisition pulse is provided for follow-up micro treatment module，It is easy to signal processing，Frequency overlapped-resistable filter is used for docking the collection of letters number and carries out frequency range filtering and filter out effective VLF signal；Described signal processing unit includes micro treatment module, image display, phase amplitude capture card and equivalent depth capture card, wherein image display, phase amplitude capture card and equivalent depth capture card are electrically connected with by circuit and micro treatment module respectively, and phase amplitude capture card and equivalent depth capture card are for the amplitude of very low frequency signal and the collection of phase changing capacity and the collection to underground wire coil institute buried depth degree equivalence value；Described signal output unit includes electronic displays, and this electronic displays is electrically connected with image display by circuit.