CN109407155A - A kind of detection method for preventing to dig power-off cable - Google Patents
A kind of detection method for preventing to dig power-off cable Download PDFInfo
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- CN109407155A CN109407155A CN201811124995.7A CN201811124995A CN109407155A CN 109407155 A CN109407155 A CN 109407155A CN 201811124995 A CN201811124995 A CN 201811124995A CN 109407155 A CN109407155 A CN 109407155A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/081—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices the magnetic field is produced by the objects or geological structures
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
- G08B25/10—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium using wireless transmission systems
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electromagnetism (AREA)
- Emergency Management (AREA)
- Business, Economics & Management (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geophysics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Alarm Systems (AREA)
Abstract
The invention discloses a kind of detection methods for preventing to dig power-off cable, including arrangement detection system, self-test, sensor sensing, signal processing and the several steps of alarm, system used in this method is easy for installation, as long as sensor to be mounted on to the part that may touch live electric cable, then transmitting a signal to control section by inner lead can reach detection effect；High safety and reliability will not generate high pressure Danger Electric shock risk due to not being lost using non-contact detection；This method is equipped with startup self-detection program, on the one hand ensure that the normal operation of system when in use, on the other hand also prevents staff and forget to detect before operation；Design has remote alarms, while alarm at the scene, can also notify the related personnel in Central Control Room in time, effectively be supported.
Description
Technical field
The invention mainly relates to intelligent measurements and control field, and in particular to a kind of detection method for preventing to dig power-off cable.
Background technique
Currently, in terms of road construction, the accident for digging power-off cable occurs again and again, causes unnecessary economic loss and bad
Social influence be also only limitted to detect the presence of high-tension cable when digging and powering off cable, meet accident to do and in terms of detection cable
It alarms and handles afterwards, can not accomplish to be detected and alarmed before digging is disconnected.It is existing to be directed to prevention engineering truck in the construction process
The Antistatic alarm of electric system when digging the similar techniques of the solution of power-off cable, but this kind of warning device Shortcomings
Place: have one section it is longer it is outer draw receive antenna；There is a sensitivity change-over switch, highly sensitive position need to be placed on when generally using
It must be placed on muting sensitivity position when setting, and saving, make troubles to using；Self-test uses button switch, not only increases movable
The probability that original part has damaged, and do not meet the purpose for inspection of alarming in electric field；Entire circuit uses transistor discrete component,
Power consumption is big, circuit structure is complicated, at high cost, usage mode is single.
Summary of the invention
For overcome the deficiencies in the prior art, it the present invention provides a kind of detection method for preventing to dig power-off cable, can mention
Before test out the presence of high-tension cable, and then it is disconnected to prevent cable from being dug.
In order to achieve the above object, the invention adopts the following technical scheme: a kind of detection method for preventing to dig power-off cable, is somebody's turn to do
Method is for detecting construction location with the presence or absence of cable, characterized by the following steps:
Step 1: arrangement detection system: installing acoustic-optic alarm near cable, remote alarming device installed in master control room,
The input terminal of signal amplifying apparatus is connect with Hall element group, by the input terminal of control unit respectively with signal amplifying apparatus
Output end is connected with self-checking unit, and the Hall element group includes six Hall elements, and each Hall element is towards different
One hexahedron structure of plane and composition, control unit carry out long-range control connection to remote alarming device, set remote alarms
The alarm threshold value of device and acoustic-optic alarm；
Step: 2: self-test: after system is opened, the self-checking unit that open command triggers system carries out function inspection to entire detection system
It surveys, the range of detection includes the detection to input signal, output signal and alarm unit, if there is the problem of cannot achieve function
Processing in time；
Step 3: sensor sensing: by Hall element group close to the position of desired detection cable, if there is cable in position detected
Presence, Hall element group can receive cable current generation magnetic field signal；
Step: 4: signal processing: being transferred to signal method device for the signal that Hall element group receives and handle, and forms mark
The voltage signal of 0~2V of standard, is transferred to control unit for processed signal；
Step 5: alarm: the signal that will be transmitted to control unit is compared with the threshold value of setting, once the signal is more than setting
Threshold value, control unit issue order, and then control alarm unit and alarm.
Preferably, described control unit uses single chip computer architecture, the input signal of the single-chip microcontroller is signal amplification dress
The switching signal of the signal transmitted and self-checking unit set, the output signal of the single-chip microcontroller are that instruction alarm unit works
Control signal.
Preferably, the light alarming device is alarmed using LED matrix.
Preferably, being believed between described control unit and remote alarming device by wireless WIFI chip and antenna transmission
Number.
Preferably, the cable of this method detection is high-tension cable, the voltage class of the high-tension cable be 220V,
The voltage class of 380V or 380V or more.
Preferably, this detection method uses a kind of specific circuit structure, it is characterised in that: the Hall element group packet
Constant-current circuit and Hall detection circuit are included, described control unit includes signal amplification circuit, single-chip microcontroller and power amplification circuit, institute
Stating alarm unit includes warning circuit,
The constant-current circuit includes first resistor R1, second resistance R2, the first zener diode DZ1, the first anti-thunder tube D1 and
One triode Q1, the output end of the first zener diode DZ1 are connect with 12V power supply, and input terminal concatenates first resistor R1, institute
The other end ground connection of first resistor R1 is stated, one end of the second resistance R2 is connect with 12V power supply, the other end and the first triode
The collector of Q1 connects, and the input terminal of the first anti-thunder tube D1 is connect with the base stage of the first triode Q1, output end and first
The input terminal of zener diode DZ1 connects, and the emitter of the first triode Q1 is connect with the input terminal of Hall detection circuit,
The constant-current circuit is used to power to Hall detection circuit；
The Hall detection circuit includes the first Hall element H1, the second Hall element H2, third Hall element H3, the 4th Hall
Element H4, the 5th Hall element H5, the 6th Hall element H6 form the Hall detection circuit of hexahedron type；
The signal amplification circuit includes operational amplifier IC1, adder circuit, feedback resistance R21, zeroing circuit, amplitude modulation electricity
Road and signal protection circuit,
The single-chip microcontroller IC5 selects the single-chip microcontroller of model 80C51, further includes the 7th capacitor C7, the 8th capacitor C8, concussion resistance
The oscillating circuit of R33 composition, provides the oscillation frequency of single-chip microcontroller；
The power amplification circuit include pliotron Q2, the base resistance R32 of triode, isolation circuit relay
The aerial drainage diode D4 of RELAY1 and protective relay；
The warning circuit includes warning lamp DS1, voice guard MK1, wireless WIFI chip IC 6 and the antenna WF of alarm.
The utility model has the advantages that compared with prior art, the invention has the following advantages that system installation side used in this method
Just, as long as sensor to be mounted on to the part that may touch live electric cable, control is then transmitted a signal to by inner lead
Part can reach detection effect；High safety and reliability will not be produced due to not being lost using non-contact detection
Raw high pressure Danger Electric shock risk；This method is equipped with startup self-detection program, on the one hand ensure that the normal operation of system when in use, another
Aspect also prevents staff and forgets to detect before operation；Design has remote alarms, also can be timely while alarm at the scene
It notifies the related personnel in Central Control Room, is effectively supported.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the working principle of the invention figure；
Fig. 3 is circuit structure diagram of the invention.
Specific embodiment
In the following with reference to the drawings and specific embodiments, the present invention is furture elucidated, it should be understood that these embodiments are merely to illustrate
It the present invention rather than limits the scope of the invention, after the present invention has been read, those skilled in the art are to of the invention each
The modification of kind equivalent form falls within the application range as defined in the appended claims.
As shown in Fig. 1-2, a kind of detection method for preventing to dig power-off cable uses a kind of cable detection in the method
System, the detection system include detection unit, signal processing unit, alarm unit, and detection unit includes self-checking unit and Hall
Element group, self-checking unit are connect with signal processing unit, and self-checking unit is used to carry out self-test, Hall element group when system is opened
Including six Hall elements, each Hall element is towards different one hexahedron structures of plane and composition, Hall element group
The presence of high-tension cable is detected, the voltage class of high-tension cable is 220V, 380V or higher；Signal processing unit includes that signal is put
Big device and single-chip microcontroller, signal amplifying apparatus is for amplifying the signal that Hall element group detects, control unit is in connecing
It receives the signal of signal amplifying apparatus and self-checking unit and controls alarm unit；Control unit uses single chip computer architecture, single-chip microcontroller
Input signal by the signal of signal amplifying apparatus transmitted and the switching signal of self-checking unit, the output signal of single-chip microcontroller is
Indicate the control signal of alarm unit work.Alarm unit includes acoustic-optic alarm and remote alarming device, sound-light alarm dress
The warning reminding that sound and light are carried out for the staff to scene is set, light alarming device is reported using LED matrix
Alert, it is energy saving both to have reduced power consumption using LED matrix, can also increase the service life, improve reliability；Remote alarming device is used
Warning reminding is carried out in the staff into master control room, when there is alarm condition, single-chip microcontroller issues instruction, by wireless
Alarm signal is issued master control room by WIFI chip and antenna, to be helped in time.
The detection method that power-off cable is dug in the prevention includes the following steps:
Step 1: arrangement detection system: installing acoustic-optic alarm near cable, remote alarming device installed in master control room,
The input terminal of signal amplifying apparatus is connect with Hall element group, by the input terminal of control unit respectively with signal amplifying apparatus
Output end is connected with self-checking unit, and the Hall element group includes six Hall elements, and each Hall element is towards different
One hexahedron structure of plane and composition, control unit carry out long-range control connection to remote alarming device, set remote alarms
The alarm threshold value of device and acoustic-optic alarm；
Step: 2: self-test: after system is opened, the self-checking unit that open command triggers system carries out function inspection to entire detection system
It surveys, the range of detection includes the detection to input signal, output signal and alarm unit, if there is the problem of cannot achieve function
Processing in time；
Step 3: sensor sensing: by Hall element group close to the position of desired detection cable, if there is cable in position detected
Presence, Hall element group can receive cable current generation magnetic field signal；
Step: 4: signal processing: being transferred to signal method device for the signal that Hall element group receives and handle, and forms mark
The voltage signal of 0~2V of standard, is transferred to control unit for processed signal；
Step 5: alarm: the signal that will be transmitted to control unit is compared with the threshold value of setting, once the signal is more than setting
Threshold value, control unit issue order, and then control alarm unit and alarm.
As shown in figure 3, this prevention is dug in the circuit of system used in the detection method of power-off cable, all parts are as follows:
Hall element group includes constant-current circuit and Hall detection circuit, and control unit includes signal amplification circuit, single-chip microcontroller and function
Rate amplifying circuit, alarm unit include warning circuit,
Constant-current circuit includes first resistor R1, second resistance R2, the first zener diode DZ1, the first anti-thunder tube D1 and the one or three
Pole pipe Q1, the output end of the first zener diode DZ1 are connect with 12V power supply, and input terminal concatenates first resistor R1, first resistor R1
Other end ground connection, one end of second resistance R2 connect with 12V power supply, and the other end is connect with the collector of the first triode Q1,
The input terminal of first anti-thunder tube D1 is connect with the base stage of the first triode Q1, the input of output end and the first zener diode DZ1
End connection, the emitter of the first triode Q1 are connect with the input terminal of Hall detection circuit, and constant-current circuit is used to detect to Hall
Circuit power supply；
Hall detection circuit includes the first Hall element H1, the second Hall element H2, third Hall element H3, the 4th Hall element
H4, the 5th Hall element H5, the 6th Hall element H6 form the Hall detection circuit of hexahedron type；
Signal amplification circuit include operational amplifier IC1, adder circuit, feedback resistance R21, zeroing circuit, modulation circuit and
Signal protection circuit,
Single-chip microcontroller IC5 selects the single-chip microcontroller of model 80C51, further includes the 7th capacitor C7, the 8th capacitor C8, concussion resistance R33 group
At oscillating circuit, the oscillation frequency of single-chip microcontroller is provided；
Power amplification circuit include pliotron Q2, the base resistance R32 of triode, isolation circuit relay RELAY1
With the aerial drainage diode D4 of protective relay；
Warning circuit includes warning lamp DS1, voice guard MK1, wireless WIFI chip IC 6 and the antenna WF of alarm.
One of foundation of the invention is to utilize Biot-Sa farr's law: generating around constant current (moving charge) constant
Magnetic field.As long as the working cable of electrification must generate electric current wherein, direct current generates DC current, and alternating current generates friendship
Galvanic electricity stream, direct current generate magnetic field be it is single-phase, alternating current generate magnetic field be alternation.
The advantages of AC and DC can be detected using hall effect sensor, it is contemplated that sensor head is actually being answered
Locational uncertainty in, design a hexahedron splicing pcb board, every one side place a Hall element, and with add
Musical instruments used in a Buddhist or Taoist mass connects the Hall element in six faces, in this way, can receive cable electricity regardless of what orientation transducing part is in
The raw magnetic field of miscarriage.
After processing by the signal received in sensing head, the voltage signal of 0~2V of standard is formed, single-chip microcontroller is sent into and carries out
Processing, and be compared with the threshold value of setting, once being more than given threshold, order is issued, and then control sound-light alarm, together
When, remote alarms are carried out by wireless WIFI.
In addition, making a fault in use for anti-locking system, a self-check program, before every task, system are devised
Self-test is carried out, the working condition of detection system is responded in concurrent responding, and after success, system enters normal operating conditions.
In the operating condition, the magnetic field of hexahedron Hall sensor detection live electric cable, and be converted to accessible telecommunications
Number, it is sent into single-chip microcontroller and is analyzed and processed, after determining and signal target occur, carry out live sound-light alarm, and carry out simultaneously
Remote alarms take startup self-detection and ann reset function when ensuring that system is safely and effectively run.
This system uses hexahedron Hall element carrier, it is therefore prevented that only uses single Hall element detection and blind area occurs；Needle
Specific frequency (50Hz/60Hz, 400HZz) is analyzed, construction personnel is helped correctly to be judged；Increase startup self-detection journey
Sequence, intelligentized design, anti-locking system fail, and reduce the incidence of accident；Increase remote alarming function, avoids latent
Danger.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (6)
1. a kind of detection method for preventing to dig power-off cable, for detecting construction location with the presence or absence of cable, feature exists this method
In: include the following steps:
Step 1: arrangement detection system: installing acoustic-optic alarm near cable, remote alarming device installed in master control room,
The input terminal of signal amplifying apparatus is connect with Hall element group, by the input terminal of control unit respectively with signal amplifying apparatus
Output end is connected with self-checking unit, and the Hall element group includes six Hall elements, and each Hall element is towards different
One hexahedron structure of plane and composition, control unit carry out long-range control connection to remote alarming device, set remote alarms
The alarm threshold value of device and acoustic-optic alarm；
Step: 2: self-test: after system is opened, the self-checking unit that open command triggers system carries out function inspection to entire detection system
It surveys, the range of detection includes the detection to input signal, output signal and alarm unit, if there is the problem of cannot achieve function
Processing in time；
Step 3: sensor sensing: by Hall element group close to the position of desired detection cable, if there is cable in position detected
Presence, Hall element group can receive cable current generation magnetic field signal；
Step: 4: signal processing: being transferred to signal method device for the signal that Hall element group receives and handle, and forms mark
The voltage signal of 0~2V of standard, is transferred to control unit for processed signal；
Step 5: alarm: the signal that will be transmitted to control unit is compared with the threshold value of setting, once the signal is more than setting
Threshold value, control unit issue order, and then control alarm unit and alarm.
2. the detection method that power-off cable is dug in prevention according to claim 1, it is characterised in that: described control unit is selected single
Piece machine, the single-chip microcontroller include input port and output port, the input port respectively with signal amplifier and self-checking unit
Connection, for receiving the signal of signal amplifying apparatus transmitted and the switching signal of self-checking unit, the output port and report
Alert unit connection, is used to indicate alarm unit work.
3. the detection method that power-off cable is dug in prevention according to claim 1, it is characterised in that: the light alarming device choosing
Use LED matrix.
4. the detection method that power-off cable is dug in prevention according to claim 3, it is characterised in that: described control unit and long-range
Pass through wireless WIFI chip and antenna transmission signal between warning device.
5. it is according to claim 1 prevention dig power-off cable detection method, it is characterised in that: this method detection cable be
High-tension cable, the voltage class of the high-tension cable is the voltage class of 220V, 380V or 380V or more.
6. the detection method of power-off cable is dug in any prevention according to claim 1-6, a kind of specific circuit knot is used
Structure, it is characterised in that: the Hall element group includes constant-current circuit and Hall detection circuit, and described control unit includes that signal is put
Big circuit, single-chip microcontroller and power amplification circuit, the alarm unit include warning circuit,
The constant-current circuit includes first resistor R1, second resistance R2, the first zener diode DZ1, the first anti-thunder tube D1 and
One triode Q1, the output end of the first zener diode DZ1 are connect with 12V power supply, and input terminal concatenates first resistor R1, institute
The other end ground connection of first resistor R1 is stated, one end of the second resistance R2 is connect with 12V power supply, the other end and the first triode
The collector of Q1 connects, and the input terminal of the first anti-thunder tube D1 is connect with the base stage of the first triode Q1, output end and first
The input terminal of zener diode DZ1 connects, and the emitter of the first triode Q1 is connect with the input terminal of Hall detection circuit,
The constant-current circuit is used to power to Hall detection circuit；
The Hall detection circuit includes the first Hall element H1, the second Hall element H2, third Hall element H3, the 4th Hall
Element H4, the 5th Hall element H5, the 6th Hall element H6 form the Hall detection circuit of hexahedron type；
The signal amplification circuit includes operational amplifier IC1, adder circuit, feedback resistance R21, zeroing circuit, amplitude modulation electricity
Road and signal protection circuit,
The single-chip microcontroller IC5 selects the single-chip microcontroller of model 80C51, further includes the 7th capacitor C7, the 8th capacitor C8, concussion resistance
The oscillating circuit of R33 composition, provides the oscillation frequency of single-chip microcontroller；
The power amplification circuit include pliotron Q2, the base resistance R32 of triode, isolation circuit relay
The aerial drainage diode D4 of RELAY1 and protective relay；
The warning circuit includes warning lamp DS1, voice guard MK1, wireless WIFI chip IC 6 and the antenna WF of alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811124995.7A CN109407155A (en) | 2018-09-26 | 2018-09-26 | A kind of detection method for preventing to dig power-off cable |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811124995.7A CN109407155A (en) | 2018-09-26 | 2018-09-26 | A kind of detection method for preventing to dig power-off cable |
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| CN109407155A true CN109407155A (en) | 2019-03-01 |
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| CN201811124995.7A Pending CN109407155A (en) | 2018-09-26 | 2018-09-26 | A kind of detection method for preventing to dig power-off cable |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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Application publication date: 20190301 |