CN103715648B - A kind of pilot circuit treating apparatus - Google Patents
A kind of pilot circuit treating apparatus Download PDFInfo
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- CN103715648B CN103715648B CN201310684855.6A CN201310684855A CN103715648B CN 103715648 B CN103715648 B CN 103715648B CN 201310684855 A CN201310684855 A CN 201310684855A CN 103715648 B CN103715648 B CN 103715648B
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Abstract
The present invention relates to a kind of pilot circuit treating apparatus, comprise the precursor circuit that signal is carried out to intrinsic safety processing and be converted to pulse signal; And the pulse signal of precursor circuit is carried out to Intelligent treatment, and filtering interfering also identifies different states, and then sends the signal processing module of action command, and this signal processing module is electrically connected on the output of precursor circuit; And receive the action command that signal processing module sends, and equipment is realized to the Executive Module of Long-distance Control, this Executive Module is electrically connected on the output of signal processing module. The present invention adopts precursor circuit to carry out intrinsic safety processing, signal conversion to pilot signal, and by signal processing module, the signal after changing is carried out to Intelligent treatment, thereby solve because pilot circuit control circuit is long, and the failure problems causing ensures the safety and reliability of producing.
Description
Technical field
The present invention relates to a kind of pilot circuit treating apparatus for coal mine equipment.
Background technology
The pilot circuit of coal mine equipment is for the starting and stopping of operating personnel's control appliance before equipment main circuit startsAnd meet the power supply circuits in advance of other conditions of work, because the control line distance of pilot circuit is long, holdThe fault that is prone to short circuit or opens circuit, and in signals transmission, be easily subject to extraneous interference, like thisJust there will be the misoperation of equipment, bring the problem of security and reliability.
Summary of the invention
For above-mentioned technical problem, the invention provides a kind of pilot circuit treating apparatus, it adopts guideCircuit carries out the conversion of intrinsic safety processing, signal to pilot signal, and by signal processing module the letter after to conversionNumber carry out Intelligent treatment, thereby solve because pilot circuit control circuit is long, and the failure problems causing,Ensure the safety and reliability of producing.
Realize technical scheme of the present invention as follows:
A kind of pilot circuit treating apparatus, comprises the elder generation that signal is carried out to intrinsic safety processing and be converted to pulse signalConductive path; And
The pulse signal of precursor circuit is carried out to Intelligent treatment, and filtering interfering also identifies different states,And then sending the signal processing module of action command, this signal processing module is electrically connected on the output of precursor circuitEnd; And
Receive the action command that signal processing module sends, and equipment realized to the Executive Module of Long-distance Control,This Executive Module is electrically connected on the output of signal processing module.
Preferably, comprise transformer, current-limiting resistance, diode, rectifier bridge and photoelectric switch, becomeThe output of depressor is connected with one end of current-limiting resistance, and the other end of cut-off current is connected with one end of diode,The other end of diode is connected with the input of rectifier bridge, and the output of rectifier bridge is connected with photoelectric switch.
Preferably, described signal processing module is single-chip microcomputer or DSP.
Preferably, described Executive Module comprises serial port level changer and main frame, serial port level changerInput is connected in the output of signal processing module, and the output of serial port level changer is electrically connected with main frame.
Adopted such scheme, precursor circuit converts external pilot signal in the arteries and veins of signal processing module identificationRush signal, signal processing module utilizes the capturing function of processor to detect pulse the pulse signal collectingThe frequency of signal and width. When pulse width reaches certain width, be considered as effective pilot signal, noAs interfering signal by its filtering. If effectively the frequency of pilot signal is about 50Hz, and at certain hourIn, its quantity within the limits prescribed, illustrates pilot circuit normally closed, signal processing module just can be to holdingRow sends normal signal, starting device; If effectively the frequency of pilot signal is about 100Hz, and in a timingIn, its quantity also within the limits prescribed, illustrates pilot circuit short circuit, signal processing module just can be to holdingRow sends fault-signal, arrestment; If without effective pilot signal, guide is described in official hourLoop open circuit, signal processing module also can send fault-signal, arrestment to carrying out. The present invention is by letterNumber processing module is caught the signal of precursor circuit in real time, and filtering interfering, identifies different duties, therebySolved because pilot circuit control circuit is long, and the guide's short circuit causing, open circuit and fault disturbProblem, ensures the safety and reliability of producing.
Brief description of the drawings
Fig. 1 is theory diagram of the present invention;
Fig. 2 is the circuit theory diagrams of precursor circuit;
Fig. 3 is the flow chart that a kind of pilot circuit treating apparatus is processed.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is further described.
Referring to Fig. 1, a kind of pilot circuit treating apparatus of the present invention, comprises signal is carried out to intrinsic safety processing and turnsBe changed to the precursor circuit of pulse signal; And the pulse signal of precursor circuit is carried out to Intelligent treatment, filtering is dryDisturb and identify different states, and then send the signal processing module of action command, this signal is processed mouldPiece is electrically connected on the output of precursor circuit; And receive the action command that signal processing module sends, and rightEquipment is realized the Executive Module of Long-distance Control, and this Executive Module is electrically connected on the output of signal processing module.
Referring to Fig. 2, precursor circuit of the present invention preferably includes transformer, current-limiting resistance, diode, rectifier bridgeAnd photoelectric switch, the output of transformer is connected with one end of current-limiting resistance, another of cut-off currentEnd is connected with one end of diode, and the other end of diode is connected with the input of rectifier bridge, rectifier bridge defeatedGoing out end is connected with photoelectric switch. Transformer isolation AC power, pilot signal is carried out basis by current-limiting resistancePeace is processed, and utilizes the conducting loop of the single-phase electric conductivity formation AC power half period of diode, by wholeStream bridge is converted to the pulse signal of certain frequency, and through photoelectric switch, being converted to signal processing module canWith the pulse signal of identification.
Referring to Fig. 3, signal processing module of the present invention is preferably single-chip microcomputer or DSP. Signal processing module utilizesIts capturing function detects frequency and the width of pulse signal. When pulse width reaches certain width, lookFor effective pilot signal, otherwise as interfering signal by its filtering. If effectively the frequency of pilot signal approximatelyFor 50Hz, and within a certain period of time, its quantity within the limits prescribed, illustrates pilot circuit normally closed,Signal processing module just can send normal signal, starting device to carrying out; If the effectively frequency of pilot signalBe about 100Hz, and within a certain period of time, its quantity also within the limits prescribed, illustrates pilot circuit short circuit,Signal processing module just can send fault-signal, arrestment to carrying out; If nothing effectively in official hourPilot signal, illustrate that pilot circuit opens circuit, signal processing module also can to carry out send fault-signal, stopOnly equipment.
Executive Module of the present invention preferably includes serial port level changer and main frame, serial port level changerInput is connected in the output of signal processing module, and the output of serial port level changer is electrically connected with main frame.
Comprehensive the above, adopt a kind of pilot circuit treating apparatus of this programme, can catch in real time guideThe signal of circuit, filtering interfering, identifies different duties, thereby has solved due to pilot circuit controlCircuit is long, and the guide's short circuit causing, open circuit and fault disturb problem, ensure produce securityAnd reliability.
Claims (3)
1. a pilot circuit treating apparatus, is characterized in that: comprise the precursor circuit that signal is carried out to intrinsic safety processing and be converted to pulse signal; And
The pulse signal of precursor circuit is carried out to Intelligent treatment, and filtering interfering also identifies different states, and then sends the signal processing module of action command, and this signal processing module is electrically connected on the output of precursor circuit; And
Receive the action command that signal processing module sends, and equipment is realized to the Executive Module of Long-distance Control, this Executive Module is electrically connected on the output of signal processing module;
Described filtering interfering is to reach certain width when pulse width, is considered as effective pilot signal, otherwise as interfering signal by its filtering;
Described precursor circuit comprises transformer, current-limiting resistance, diode, rectifier bridge and photoelectric switch, the output of transformer is connected with one end of current-limiting resistance, the other end of cut-off current is connected with one end of diode, the other end of diode is connected with the input of rectifier bridge, and the output of rectifier bridge is connected with photoelectric switch.
2. a kind of pilot circuit treating apparatus according to claim 1, is characterized in that: described signal processing module is single-chip microcomputer or DSP.
3. a kind of pilot circuit treating apparatus according to claim 1, it is characterized in that: described Executive Module comprises serial port level changer and main frame, the input of serial port level changer is connected in the output of signal processing module, and the output of serial port level changer is electrically connected with main frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310684855.6A CN103715648B (en) | 2013-12-13 | 2013-12-13 | A kind of pilot circuit treating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310684855.6A CN103715648B (en) | 2013-12-13 | 2013-12-13 | A kind of pilot circuit treating apparatus |
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| Publication Number | Publication Date |
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| CN103715648A CN103715648A (en) | 2014-04-09 |
| CN103715648B true CN103715648B (en) | 2016-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310684855.6A Active CN103715648B (en) | 2013-12-13 | 2013-12-13 | A kind of pilot circuit treating apparatus |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694978A (en) * | 2009-10-11 | 2010-04-14 | 太原理工大学 | Remote start-stop control circuit of motor |
| CN101826714A (en) * | 2010-03-09 | 2010-09-08 | 天津市天矿电器设备有限公司 | Intrinsically-safe type control device |
| CN202586268U (en) * | 2012-04-12 | 2012-12-05 | 天地（常州）自动化股份有限公司 | Self fault discrimination pilot circuit system |
| CN203632206U (en) * | 2013-12-13 | 2014-06-04 | 常州联力自动化科技有限公司 | Pilot loop intelligent processing system |
-
2013
- 2013-12-13 CN CN201310684855.6A patent/CN103715648B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694978A (en) * | 2009-10-11 | 2010-04-14 | 太原理工大学 | Remote start-stop control circuit of motor |
| CN101826714A (en) * | 2010-03-09 | 2010-09-08 | 天津市天矿电器设备有限公司 | Intrinsically-safe type control device |
| CN202586268U (en) * | 2012-04-12 | 2012-12-05 | 天地（常州）自动化股份有限公司 | Self fault discrimination pilot circuit system |
| CN203632206U (en) * | 2013-12-13 | 2014-06-04 | 常州联力自动化科技有限公司 | Pilot loop intelligent processing system |
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| Publication number | Publication date |
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| CN103715648A (en) | 2014-04-09 |
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