CN203930031U - A kind of electric wire sniffer detecting based on weak magnetic - Google Patents
A kind of electric wire sniffer detecting based on weak magnetic Download PDFInfo
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- CN203930031U CN203930031U CN201420350874.5U CN201420350874U CN203930031U CN 203930031 U CN203930031 U CN 203930031U CN 201420350874 U CN201420350874 U CN 201420350874U CN 203930031 U CN203930031 U CN 203930031U
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Abstract
The utility model discloses a kind of electric wire sniffer detecting based on weak magnetic, comprise magnetic field sensor 1, A/D modular converter 2, single-chip microcomputer 3, display module 4, low pressure fiducial chip 5 and power module 6; Described magnetic field sensor 1, A/D modular converter 2, single-chip microcomputer 3 and display module 4 are connected successively; Described low pressure fiducial chip 5 is powered for described A/D modular converter 2; Described magnetic field sensor 1, single-chip microcomputer 3, display module 4 and low pressure fiducial chip 5 are all connected with power module 6.This electric wire sniffer can gather near low-intensity magnetic field signal electric wire, at the existence of display module output field strength values and electric wire, realizes the function to electric wire Detection location.This installation cost is cheap, easy to use, simple to operate, and accuracy is high, has overcome the less problem of horizontal component of wasting resource, vortex induction signal, has broad application prospects.
Description
Technical field
The utility model relates to a kind of electric wire sniffer detecting based on weak magnetic.
Background technology
In the time of building construction decoration or construction reformation, may due to staff body of wall electric wire is walked uncertain, the destruction of making paired transmission line, causes normal power failure, brings unnecessary life inconvenience.Meanwhile, along with social development, underground cable network grows stronger day by day, and original drawing can not correctly reflect the path of cable, and the problem of outside destroy cable also becomes increasingly conspicuous, and greatly threatens power grid security.
At present, what most of electric wire detection instruments adopted is the electromagnetic method of active source, injects the AC signal of certain frequency by transmitter to electric wire, and receiver is realized electric wire location according to the induced signal changing.But there is the shortcomings such as the horizontal component of waste resource, vortex induction signal is less in this mode.Therefore the electric wire sniffer that, a kind of accuracy is high, easy to use, cost is low, can realize online Non-Destructive Testing is is urgently researched and developed.
Summary of the invention
The utility model provides a kind of electric wire sniffer detecting based on weak magnetic, and its object is, overcomes the defect of existing electric wire Detection Techniques.
The electric wire sniffer detecting based on weak magnetic, comprises magnetic field sensor 1, A/D modular converter 2, single-chip microcomputer 3, display module 4, low pressure fiducial chip 5 and power module 6;
Described magnetic field sensor 1, A/D modular converter 2, single-chip microcomputer 3 and display module 4 are connected successively;
Described low pressure fiducial chip 5 is powered for described A/D modular converter 2;
Described magnetic field sensor 1, single-chip microcomputer 3, display module 4 and low pressure fiducial chip 5 are all connected with power module 6.
Single-chip microcomputer has been used for relatively judging of the detected value of magnetic field sensor and setting value and drive the function of display module.
Described magnetic field sensor is AD22151 magnetic field sensor.
The output voltage of AD22151 is directly proportional to the magnetic field intensity that is applied to vertical devices encapsulation end face.Its principal feature is that a large amount of Hall element array integrated technologies and internal temperature compensation and circuit for signal conditioning are combined, and realizes monolithic integrated.So not only reduce temperature and float, improve precision, and reduce volume, only use minimum outward element just can meet various application requirements
It is the A/D modular converter of MC14433 that described A/D modular converter 2 adopts model.
It is few that MC14433 has outward element, and input impedance is high, low in energy consumption, supply voltage wide ranges, and precision high, and there is automatic zero adjustment and auto polarity translation function, as long as external a small amount of resistor-capacitor unit can form a complete A/D converter.
Described single-chip microcomputer 3 is STC89C52 single-chip microcomputer.
STC89C52 has the function that traditional 51 single-chip microcomputers do not possess, and is a kind of low-power consumption, high-performance CMOS 8 8-digit microcontrollers that STC Corporation produces, has 8K at system programmable Flash storer.
Described display module 4 is LCDs.
Described low pressure fiducial chip 5 is MC1403 low pressure fiducial chip.
MC1403 is pin-point accuracy, the Low Drift Temperature produced of Motorola Inc. of the U.S., the bandgap voltage reference of employing laser correction, for the chip of 8～12bitA/D provides reference voltage accurately.
Described power module 6 is MAX756 chip.
MAX756 is a kind of high-level efficiency, and the DC-DC transducer of booster type has the advantages such as peripheral cell is few, volume is little, low in energy consumption, debugging is convenient, and output current is large.
Magnetic field sensor gathers low-intensity magnetic field signal, and delivers to A/D converter; After A/D converter conversion, obtain magnetic field digital electric signal, and deliver to single-chip microcomputer; Through single-chip microcomputer, field signal is compared after judgement, whether have electric wire near drawing sniffer, and export display module to.
Beneficial effect
The utility model provides a kind of electric wire sniffer detecting based on weak magnetic, comprises magnetic field sensor 1, A/D modular converter 2, single-chip microcomputer 3, display module 4, low pressure fiducial chip 5 and power module 6; Described magnetic field sensor 1, A/D modular converter 2, single-chip microcomputer 3 and display module 4 are connected successively; Described low pressure fiducial chip 5 is powered for described A/D modular converter 2; Described magnetic field sensor 1, single-chip microcomputer 3, display module 4 and low pressure fiducial chip 5 are all connected with power module 6.This electric wire sniffer can gather near low-intensity magnetic field signal electric wire, at the existence of display module output field strength values and electric wire, realizes the function to electric wire Detection location.This installation cost is cheap, easy to use, simple to operate, and accuracy is high, has overcome the less problem of horizontal component of wasting resource, vortex induction signal, has broad application prospects.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is circuit interconnect pattern of the present utility model;
Fig. 3 is the circuit theory diagrams of power module in the utility model.
Embodiment
Below in conjunction with embodiment, the utility model is described further.
As shown in Figure 1, a kind of electric wire sniffer detecting based on weak magnetic, comprises magnetic field sensor 1, A/D modular converter 2, single-chip microcomputer 3, display module 4, low pressure fiducial chip 5 and power module 6;
Described magnetic field sensor 1, A/D modular converter 2, single-chip microcomputer 3 and display module 4 are connected successively;
Described low pressure fiducial chip 5 is powered for described A/D modular converter 2;
Described magnetic field sensor 1, single-chip microcomputer 3, display module 4 and low pressure fiducial chip 5 are all connected with power module 6.
Single-chip microcomputer has been used for relatively judging of the detected value of magnetic field sensor and setting value and drive the function of display module.
Described magnetic field sensor is AD22151 magnetic field sensor.
The output voltage of AD22151 is directly proportional to the magnetic field intensity that is applied to vertical devices encapsulation end face.Its principal feature is that a large amount of Hall element array integrated technologies and internal temperature compensation and circuit for signal conditioning are combined, and realizes monolithic integrated.So not only reduce temperature and float, improve precision, and reduce volume, only use minimum outward element just can meet various application requirements
It is the A/D modular converter of MC14433 that described A/D modular converter 2 adopts model.
It is few that MC14433 has outward element, and input impedance is high, low in energy consumption, supply voltage wide ranges, and precision high, and there is automatic zero adjustment and auto polarity translation function, as long as external a small amount of resistor-capacitor unit can form a complete A/D converter.
Described single-chip microcomputer 3 is STC89C52 single-chip microcomputer.
STC89C52 has the function that traditional 51 single-chip microcomputers do not possess, and is a kind of low-power consumption, high-performance CMOS 8 8-digit microcontrollers that STC Corporation produces, has 8K at system programmable Flash storer.
Described display module 4 is LCDs.
Described low pressure fiducial chip 5 is MC1403 low pressure fiducial chip.
MC1403 is pin-point accuracy, the Low Drift Temperature produced of Motorola Inc. of the U.S., the bandgap voltage reference of employing laser correction, for the chip of 8～12bitA/D provides reference voltage accurately.
Described power module 6 is MAX756 chip.
MAX756 is a kind of high-level efficiency, and the DC-DC transducer of booster type has the advantages such as peripheral cell is few, volume is little, low in energy consumption, debugging is convenient, and output current is large.
Magnetic field sensor gathers low-intensity magnetic field signal, and delivers to A/D converter; After A/D converter conversion, obtain magnetic field digital electric signal, and deliver to single-chip microcomputer; Through single-chip microcomputer, field signal is compared after judgement, whether have electric wire near drawing sniffer, and export display module to.
As shown in Figure 2, be circuit interconnect pattern of the present utility model; In figure, U2 is single-chip microcomputer, and the RST pin of single-chip microcomputer STC89C52 receives the reset signal of self-resetting circuit, and after powering on, this device automatically resets and starts working; U3 is A/D converter, and A/D converter MC14433, from the OUTPUT end picked up signal of magnetic strength sensors A D22151, after conversion, delivers to the P1 mouth of single-chip microcomputer.The arithmetical unit of single-chip microcomputer compares the field strength values of actual measurement field strength values and setting, if exceed the field strength values of setting, near decision maker, there is electric wire, and export actual measurement field strength values and electric wire existence to display module, export LCDs to by P3.4～P3.7 port of single-chip microcomputer and show.
As shown in Figure 3, be the circuit theory diagrams of described power module.As can be seen from the figure, this power module directly uses 3.6V lithium battery, through DC-DC voltage conversion chip MAX756, voltage is risen to after 5V and to provide safe and reliable operating voltage for single-chip microcomputer and peripherals.
Claims (7)
1. the electric wire sniffer detecting based on weak magnetic, it is characterized in that, comprise magnetic field sensor (1), A/D modular converter (2), single-chip microcomputer (3), display module (4), low pressure fiducial chip (5) and power module (6);
Described magnetic field sensor (1), A/D modular converter (2), single-chip microcomputer (3) and display module (4) are connected successively;
Described low pressure fiducial chip (5) is described A/D modular converter (2) power supply;
Described magnetic field sensor (1), single-chip microcomputer (3), display module (4) and low pressure fiducial chip (5) are all connected with power module (6).
2. the electric wire sniffer detecting based on weak magnetic according to claim 1, is characterized in that, described magnetic field sensor is AD22151 magnetic field sensor.
3. the electric wire sniffer detecting based on weak magnetic according to claim 1, is characterized in that, described A/D modular converter (2) adopts the A/D modular converter that model is MC14433.
4. the electric wire sniffer detecting based on weak magnetic according to claim 1, is characterized in that, described single-chip microcomputer (3) is STC89C52 single-chip microcomputer.
5. the electric wire sniffer detecting based on weak magnetic according to claim 4, is characterized in that, described display module (4) is LCDs.
6. a kind of electric wire sniffer detecting based on weak magnetic according to claim 1, is characterized in that, described low pressure fiducial chip (5) is MC1403 low pressure fiducial chip.
7. according to the electric wire sniffer detecting based on weak magnetic described in claim 1-6 any one, it is characterized in that, described power module (6) is MAX756 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420350874.5U CN203930031U (en) | 2014-06-27 | 2014-06-27 | A kind of electric wire sniffer detecting based on weak magnetic |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420350874.5U CN203930031U (en) | 2014-06-27 | 2014-06-27 | A kind of electric wire sniffer detecting based on weak magnetic |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104407312A (en) * | 2014-12-02 | 2015-03-11 | 沈阳大学 | Power frequency weak magnetic detector |
| CN108241126A (en) * | 2016-12-23 | 2018-07-03 | 旺玖科技股份有限公司 | Non-contact intelligent battery sensing system and method |
| CN110703336A (en) * | 2019-09-20 | 2020-01-17 | 江苏方天电力技术有限公司 | Cable positioning method based on weak magnetic detection technology |
| CN111600622A (en) * | 2020-03-30 | 2020-08-28 | 成都理工大学 | Underground magnetic signal receiving device and method based on Hall effect |
| CN111722022A (en) * | 2020-05-09 | 2020-09-29 | 上海达铭科技有限公司 | Cable path detection method based on weak magnetic signal measurement |
-
2014
- 2014-06-27 CN CN201420350874.5U patent/CN203930031U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104407312A (en) * | 2014-12-02 | 2015-03-11 | 沈阳大学 | Power frequency weak magnetic detector |
| CN108241126A (en) * | 2016-12-23 | 2018-07-03 | 旺玖科技股份有限公司 | Non-contact intelligent battery sensing system and method |
| CN108241126B (en) * | 2016-12-23 | 2020-11-10 | 旺玖科技股份有限公司 | Non-contact intelligent battery sensing system and method |
| CN110703336A (en) * | 2019-09-20 | 2020-01-17 | 江苏方天电力技术有限公司 | Cable positioning method based on weak magnetic detection technology |
| CN110703336B (en) * | 2019-09-20 | 2021-07-27 | 江苏方天电力技术有限公司 | Cable positioning method based on weak magnetic detection technology |
| CN111600622A (en) * | 2020-03-30 | 2020-08-28 | 成都理工大学 | Underground magnetic signal receiving device and method based on Hall effect |
| CN111722022A (en) * | 2020-05-09 | 2020-09-29 | 上海达铭科技有限公司 | Cable path detection method based on weak magnetic signal measurement |
| CN111722022B (en) * | 2020-05-09 | 2023-02-14 | 上海达铭科技有限公司 | Cable path detection method based on weak magnetic signal measurement |
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Granted publication date: 20141105 Termination date: 20170627 |