CN205899044U - Mining electromechanical device start -stop state sensor - Google Patents
Mining electromechanical device start -stop state sensor Download PDFInfo
- Publication number
- CN205899044U CN205899044U CN201620904252.1U CN201620904252U CN205899044U CN 205899044 U CN205899044 U CN 205899044U CN 201620904252 U CN201620904252 U CN 201620904252U CN 205899044 U CN205899044 U CN 205899044U
- Authority
- CN
- China
- Prior art keywords
- coil
- signal
- microprocessor
- output
- control end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Geophysics And Detection Of Objects (AREA)
Abstract
The utility model provides a mining electromechanical device start -stop state sensor, including induction coil, signal amplifier, digital potentiometer, microprocessor and information transfer and output circuit, induction coil comprises mutually independent detecting coil and benchmark coil, and the signal output part of detecting coil and benchmark coil sends into to hold with respective amplifier circuit's signal respectively and is connected, signal amplification circuit's output links to each other with microprocessor's AD conversion input, microprocessor's a IO control end is continuous with digital potentiometer's control end, and digital potentiometer's centre tapping and signal amplifier's adjusted end link to each other, another IO control end of microprocessor and information transfer and output circuit's input link to each other, and information transfer and output circuit's output is as the signal output of whole sensor. The problem of the tradition the actual engineering of sensilla use in the needs of existence adjust repeatedly and receive environment electromagnetic interference to lead to the testing result mistake is solved.
Description
Technical field
This utility model provides a kind of mineral electromechanical equipment start-stop state sensor, for coal mine safety monitoring and automatic control
System processed supporting, belong to mine safety monitoring technology field.
Background technology
Mineral electromechanical equipment on-off transducer (hereinafter referred to as sensor) is coal mine safety monitoring and automatic control system
Product, is to realize the infrastructure device that mine modernizes production safety management.Traditional sensor utilizes around inductive power supply cable
The mode of changes of magnetic field, the working condition of indirect determination equipment: set induction coil in sensor, when pressing close to equipment service cable,
Faint magnetic strength induction signal can be recorded, this signal is amplified, detection, signal conversion and the link such as signal output, by equipment start-stop
Status information passes to outstation, thus completing monitoring and the control of equipment state.This detection method is deposited in engineering use
In two problems: one be induced signal size relevant with the size of equipment operating current, and actually used various equipment works
Make that electric current difference is larger, with the difference installing and using place, the gain that signal amplifying part is divided needs repeatedly to adjust, adjustment is improper
Even blindly install and use the confusion that can directly result in monitoring result；Two is down-hole limited space, and electromagnetic environment is severe, large-scale
The strong magnetic disturbance of equipment start-stop and adjacent power cable also can directly result in the mistake of sensor detection results.
Content of the invention
This utility model provides a kind of mineral electromechanical equipment start-stop state sensor, to solve traditional sensors Practical Project
Need present in use repeatedly to adjust and led to by environment electromagnetics interference the problem of testing result mistake.
A kind of mineral electromechanical equipment start-stop state sensor of the present invention, its technical solution is as follows:
Including the conversion of induction coil, signal amplifier, digital regulation resistance, microprocessor and information and output circuit；Wherein,
Described induction coil is made up of separate detection coil and reference coil, detection coil and reference coil
Signal output part is sent into end with the signal of respective amplifying circuit respectively and is connected；The outfan of signal amplification circuit and microprocessor
A/d conversion inputs be connected；One i/o control end of microprocessor is connected with the control end of digital regulation resistance, digital current potential
The centre tap of device is connected with the adjustment end of signal amplifier；Another i/o control end of microprocessor is changed and defeated with information
Go out circuit input be connected, information conversion and output circuit outfan as whole sensor signal output.
A kind of mineral electromechanical equipment start-stop state sensor described in the utility model it is characterised in that:
Described detection coil and reference coil be same magnetic core, in front and back side by side, turn ratio be 1:1, coil adopts 0.18mm
Enamel-covered wire coiling, every group of coil turn is 1600 circles.
When this utility model actual installation uses, detection coil magnetic core direction is vertical with tested cable louding, apart from tested
Survey cable near；The detected cable of reference coil distance is remote；In cable when detection coil is used for detecting that tested cable has electric current to pass through
The size of the field signal that surrounding produces, reference coil is used for detection and is drawn by adjacent power cable and other main equipment start and stop
The size of the spatial electromagnetic interference signal rising, the benchmark whether being energized in this, as the tested cable of microprocessor judges.
The small-signal that described signal amplifier is used for self-induction coil in future zooms into microprocessor a/d by linear scale
The receptible analog voltage signal of conversion inputs institute.
Described digital regulation resistance is used for lowering the amplification of entire signal amplifier in the control of described microprocessor.
Described microprocessor has the conversion of analogue signal a/d, intelligent decision is processed and controls output function, for being derived from
The analogue signal of signal amplifier is converted into the digital signal that can identify, then intelligent decision and process in addition, according to judgement
Result exports digital regulation resistance adjust instruction, with the suitable amplification adjusting signal amplifier, and the result warp after will determine that
Cross i/o control end and export information conversion and output circuit；
Described information conversion and output circuit are used for turning the low and high level status information from microprocessor i/o control end
Change the output representing the current signal of equipment start-stop state as whole sensor into.
In actually detected fullness in the epigastrium and abdomen following two condition enough, described microprocessor controls described information by i/o control end
Conversion and output circuit outut device "On" state information: (1) detection coil induced signal value > reference coil induced signal value, (2)
Detection coil induced signal value-reference coil induced signal value=fixed range value；When being unsatisfactory for conditions above, microprocessor leads to
Cross the conversion of i/o interface control information and output circuit outut device "Off" state information.
Of the present utility model having the active effect that creates reference coil on classical magnetic field measurement of inductance basis
Concept, determines the current status of tested cable, thus effective filtering out using detection coil and reference coil induced signal difference
The space magnetic field interference bringing from adjacent power cable or other main equipment start and stop, makes the testing result more truly may be used
Lean on；Microprocessor controls digital regulation resistance can adjust the amplification of signal amplification circuit it is achieved that induction coil is faint
The Intelligent Dynamic adjustment of signal amplifier amplification, enables the sensor to the different condition according to installing and using place and automatically fits
Should and adjust, thus decreasing loaded down with trivial details test during traditional sensors are installed and used and adjustment process.
Brief description
Fig. 1 is this utility model schematic block circuit diagram.
Specific embodiment
Further illustrate this utility model with reference to embodiments:
According to Fig. 1, described sensor includes induction coil, signal amplifier, digital regulation resistance, microprocessor and letter
Breath conversion and output circuit；Detection coil in induction coil and reference coil signal output part respectively with respective amplifying circuit
Signal send into end connect；The outfan of signal amplification circuit is connected with the a/d conversion inputs of microprocessor；Microprocessor
One i/o control end is connected with the control end of digital regulation resistance, the centre tap of digital regulation resistance and the adjustment of signal amplifier
End is connected；Another i/o control end of microprocessor is connected with the input of information conversion and output circuit, and information is changed and defeated
Go out the signal output as whole sensor for the outfan of circuit.
Described answer coil to include separate two group coil: detection coil and reference coil, the same magnetic core of two groups of coils,
In front and back side by side, turn ratio is 1:1, and coil adopts 0.18mm enamel-covered wire coiling, and every group of coil turn is 1600 circles, this induction coil
When actual installation uses, magnetic core direction is vertical with tested cable louding, and we define the near coil of the detected cable of distance is inspection
Test coil, coil on the basis of the remote coil of the detected cable of distance, when detection coil is used for detecting that tested cable has electric current to pass through
The size of the field signal producing around cable, reference coil is used for detection by adjacent power cable and other main equipment
The size of the spatial electromagnetic interference signal that start and stop cause, the benchmark whether being energized in this, as the tested cable of microprocessor judges.
Detection coil is sent into end with the signal of respective amplifying circuit respectively with reference coil and is connected, after the signal of detection is amplified,
It is respectively transmitted the a/d conversion signal to microprocessor and send into end, two of microprocessor self-inspection in future test coil and reference coil
The a/d value of signal is compared, you can determine the "on" position of tested cable, i.e. the "ON" of equipment under test or " stopping " work shape
State.
Described signal amplifier includes two groups of identical amplifying circuits, every group of amplifying circuit form for lm324 two
Level amplifying circuit, two groups of amplifying circuits are respectively used to self-inspection in future test coil and the small-signal of reference coil is put by linear scale
The receptible analog voltage signal of great achievement microprocessor a/d conversion inputs institute.
Described digital regulation resistance is the dual pathways mcp42100 type digital regulation resistance using spi interface, for described micro-
The amplification of entire signal amplifying circuit is lowered in the control of processor.
Described microprocessor be msp430f2002ipw single-chip microcomputer, have analogue signal a/d conversion, intelligent decision process and
Control output function, the use of this sensor completes following functions: (1) the analogue signal from signal amplification circuit is turned
Change the digital quantity that can identify into；(2) intelligent decision is carried out to the digital quantity after a/d conversion, according to judged result output numeral electricity
Position device adjust instruction adjusts the amplification of signal amplification circuit, makes amplifying circuit be operated in suitable state；(3) to carrying out self-inspection
Digital quantity after the a/d conversion of test coil and reference coil compares and treats, and comparative result result is controlled by i/o
End output is to information conversion and output circuit.
Low and high level status information from microprocessor i/o control end is converted into by described information conversion and output circuit
Represent the output as whole sensor for the 2-8ma current signal of equipment start-stop state, 2ma represents equipment under test " stopping ", 8ma
Represent equipment under test "ON".
The induction level of electrical conductor surrounding magnetic field is b=ki/r, and wherein k is the constant more than zero, and i is conductor
Electrical current, r is distance of reaction, due to detection coil and reference coil be same magnetic core, integrated design arranged side by side, actually used
When detection coil be close on tested cable, due to close from tested cable, for tested cable, the sense of detection coil
The distance of reaction r2 of reference coil should be less than apart from r1, therefore its induced signal b1 is more than reference coil induced signal b2, and right
For the spatial electromagnetic interference that adjacent power cable and other main equipment start and stop cause, due to distant it is believed that
Reference coil is essentially identical with the distance of reaction of detection coil, and therefore spatial electromagnetic interference is in the induced signal also base of two coils
This is identical.In actually detected, described microprocessor makes the following judgment after being connected to the signal after conversion and operates: such as detection line
Circle induced signal value > reference coil induced signal value, and detection coil induced signal value-reference coil induced signal value requiring
Fixed range within, then control information conversion and output circuit outut device "ON" information, when being unsatisfactory for conditions above, control
Information conversion and output circuit outut device "Off" state information.
Claims (2)
1. a kind of mineral electromechanical equipment start-stop state sensor it is characterised in that: include induction coil, signal amplifier, numeral
Potentiometer, microprocessor and information conversion and output circuit；Wherein,
Described induction coil is made up of separate detection coil and reference coil, the signal of detection coil and reference coil
Outfan is sent into end with the signal of respective amplifying circuit respectively and is connected；The outfan of signal amplification circuit and the a/ of microprocessor
D conversion inputs are connected；One i/o control end of microprocessor is connected with the control end of digital regulation resistance, digital regulation resistance
Centre tap is connected with the adjustment end of signal amplifier；Another i/o control end of microprocessor and information conversion and output electricity
The input on road is connected, and the outfan of information conversion and output circuit is as the signal output of whole sensor.
2. a kind of mineral electromechanical equipment start-stop state sensor described in claim 1 it is characterised in that:
Described detection coil and reference coil be same magnetic core, in front and back side by side, turn ratio be 1:1, coil adopts 0.18mm enamel-cover
Line coiling, every group of coil turn is 1600 circles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620904252.1U CN205899044U (en) | 2016-08-19 | 2016-08-19 | Mining electromechanical device start -stop state sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620904252.1U CN205899044U (en) | 2016-08-19 | 2016-08-19 | Mining electromechanical device start -stop state sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205899044U true CN205899044U (en) | 2017-01-18 |
Family
ID=57779582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620904252.1U Active CN205899044U (en) | 2016-08-19 | 2016-08-19 | Mining electromechanical device start -stop state sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205899044U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120386A (en) * | 2020-01-02 | 2020-05-08 | 天地（常州）自动化股份有限公司 | Automatic setting method for action threshold of electromechanical equipment for coal mine |
-
2016
- 2016-08-19 CN CN201620904252.1U patent/CN205899044U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120386A (en) * | 2020-01-02 | 2020-05-08 | 天地（常州）自动化股份有限公司 | Automatic setting method for action threshold of electromechanical equipment for coal mine |
| CN111120386B (en) * | 2020-01-02 | 2021-11-16 | 天地（常州）自动化股份有限公司 | Automatic setting method for action threshold of electromechanical equipment for coal mine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106290553B (en) | Novel electromagnetic sensor system for detecting defects of steel wire rope | |
| US9439369B2 (en) | Wired controlling and monitoring system for irrigation of localized areas of soil | |
| CN205899044U (en) | Mining electromechanical device start -stop state sensor | |
| CN206740938U (en) | The stator core breakdown judge TT＆C system of small and special electric machine | |
| CN107271731A (en) | It is a kind of can wirelessly transmitting data clamp on amperemeter | |
| CN103310623A (en) | Method and device for determining region of ammeter by detecting signal intensity | |
| CN202778691U (en) | Magnetic field strength controlling and monitoring device of explosion-proof magnetic separation and iron removing equipment | |
| CN205027889U (en) | A collection system for proofreading and correct fault indicator current induction signal | |
| CN214953812U (en) | Non-contact three-phase alternating current phase sequence detection device | |
| CN102810975B (en) | Electric and/or electronic suppling circuit and the method that supply voltage is provided | |
| CN203151237U (en) | Intelligent power grid system | |
| CN204613291U (en) | Portable high-pressure cable power detector | |
| CN208767991U (en) | The independently-powered power regulating system of the multipair electrode of direct current electric arc furnace | |
| CN210862274U (en) | Electric furnace temperature detection device based on PLC control | |
| Keniry et al. | Anode signal analysis—the next generation in reduction cell control | |
| CN204165575U (en) | A kind of novel device with on-line checkingi high-altitude sulfur hexafluoride breaker function | |
| CN210743771U (en) | Combined digital sensor | |
| CN205003216U (en) | Cable impedance detection circuitry | |
| CN204989303U (en) | Circuit structure of small signal is instructed with instrument | |
| CN203534187U (en) | Induction furnace body furnace lining detection device | |
| CN205211063U (en) | Outdoor transformer anti -theft device | |
| CN205582705U (en) | Voltage transformer device of temperature measurement on line | |
| CN103399240B (en) | Uninterrupted power supply cable sorting device and method | |
| CN107515024A (en) | Shield machine sensor function measurement apparatus and its method | |
| CN209526514U (en) | More trolley parallel connections applied to tyre crane take electric wire jumper detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |