CN103715648A - Pilot circuit processing device - Google Patents
Pilot circuit processing device Download PDFInfo
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- CN103715648A CN103715648A CN201310684855.6A CN201310684855A CN103715648A CN 103715648 A CN103715648 A CN 103715648A CN 201310684855 A CN201310684855 A CN 201310684855A CN 103715648 A CN103715648 A CN 103715648A
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- pilot circuit
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- signal processing
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Abstract
The invention relates to a pilot circuit processing device which comprises a pilot circuit used for carrying out intrinsically safe processing on a signal and converting the signal into a pulse signal, a signal processing module used for intelligently processing the pulse signal of the pilot circuit, filtering interference, identifying different states and issuing an action command and electrically connected to the output end of the pilot circuit, and an execution module used for receiving the action command issued by the signal processing module and remotely controlling equipment and electrically connected to the output end of the signal processing module. According to the pilot circuit processing device, the pilot circuit carries out intrinsically safe processing and conversion on a signal first, and then the signal processing module intelligently processes the converted signal, thus solving the problem that the control line of the pilot circuit is too long so as to cause failure and ensuring production safety and reliability.
Description
Technical field
The present invention relates to a kind of pilot circuit processing unit 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 and meet the power supply circuits in advance of other conditions of work before equipment main circuit starts, because the control line distance of pilot circuit is long, easily there is short circuit or the fault opening circuit, and in signals transmission, be easily subject to extraneous interference, so just there will be the misoperation of equipment, bring the problem of fail safe and reliability.
Summary of the invention
For above-mentioned technical problem, the invention provides a kind of pilot circuit processing unit, it 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 guarantees the safety and reliability of producing.
Realize technical scheme of the present invention as follows:
A pilot circuit processing unit, comprises 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.
Preferably, comprise 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.
Preferably, described signal processing module is single-chip microcomputer or DSP.
Preferably, described Executive Module comprises serial port level changer and main frame, and 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 to main frame.
Adopted such scheme, precursor circuit converts external pilot signal to the pulse signal of signal processing module identification, and signal processing module utilizes the capturing function of processor to detect frequency and the width of pulse signal the pulse signal collecting.When pulse duration reaches certain width, be considered as effective pilot signal, otherwise as interference signal by its filtering.If effectively the frequency of pilot signal is about 50Hz, and within a certain period of time, its quantity within the limits prescribed, illustrates pilot circuit normally closed, just signal processing module can send normal signal, starting device to carrying out; If effectively the frequency of pilot signal is about 100Hz, and within a certain period of time, its quantity also within the limits prescribed, illustrates pilot circuit short circuit, just signal processing module can send fault-signal, arrestment to carrying out; If without effective pilot signal, illustrate that pilot circuit opens circuit in official hour, signal processing module also can send fault-signal, arrestment to carrying out.The present invention catches the signal of precursor circuit in real time by signal processing module, filtering interfering, identifies different operating states, thereby has solved because pilot circuit control circuit is long, and the guide's short circuit causing, open circuit and problem that fault is disturbed, guarantee the safety and reliability of producing.
Accompanying drawing explanation
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 processing unit is processed.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further described.
Referring to Fig. 1, a kind of pilot circuit processing unit of the present invention, comprises 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.
Referring to Fig. 2, precursor circuit of the present invention preferably includes 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.Transformer isolation AC power, current-limiting resistance carries out intrinsic safety processing by pilot signal, utilize the conducting loop of the single-phase conductivity formation AC power half period of diode, by rectifier bridge, be converted to the pulse signal of certain frequency, through photoelectric switch, be converted to the pulse signal that signal processing module can be identified.
Referring to Fig. 3, signal processing module of the present invention is preferably single-chip microcomputer or DSP.Signal processing module utilizes its capturing function to detect frequency and the width of pulse signal.When pulse duration reaches certain width, be considered as effective pilot signal, otherwise as interference signal by its filtering.If effectively the frequency of pilot signal is about 50Hz, and within a certain period of time, its quantity within the limits prescribed, illustrates pilot circuit normally closed, just signal processing module can send normal signal, starting device to carrying out; If effectively the frequency of pilot signal is about 100Hz, and within a certain period of time, its quantity also within the limits prescribed, illustrates pilot circuit short circuit, just signal processing module can send fault-signal, arrestment to carrying out; If without effective pilot signal, illustrate that pilot circuit opens circuit in official hour, signal processing module also can send fault-signal, arrestment to carrying out.
Executive Module of the present invention preferably includes serial port level changer and main frame, and 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 to main frame.
Comprehensive the above, adopt a kind of pilot circuit processing unit of this programme, can catch in real time the signal of precursor circuit, filtering interfering, identify different operating states, thereby solved because pilot circuit control circuit is long, and the guide's short circuit causing, opened circuit and problem that fault is disturbed, guaranteed the safety and reliability of producing.
Claims (4)
1. a pilot circuit processing unit, 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.
2. according to a kind of pilot circuit processing unit described in claims 1, it is characterized in that: comprise 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.
3. according to a kind of pilot circuit processing unit described in claims 1, it is characterized in that: described signal processing module is single-chip microcomputer or DSP.
4. according to a kind of pilot circuit processing unit described in claims 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 to 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103715648A true CN103715648A (en) | 2014-04-09 |
| CN103715648B CN103715648B (en) | 2016-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310684855.6A Active CN103715648B (en) | 2013-12-13 | 2013-12-13 | A kind of pilot circuit treating apparatus |
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| Country | Link |
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| CN (1) | CN103715648B (en) |
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 |
|---|---|
| CN103715648B (en) | 2016-05-25 |
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