CN202677125U - Switching-off controller - Google Patents
Switching-off controller Download PDFInfo
- Publication number
- CN202677125U CN202677125U CN 201220327342 CN201220327342U CN202677125U CN 202677125 U CN202677125 U CN 202677125U CN 201220327342 CN201220327342 CN 201220327342 CN 201220327342 U CN201220327342 U CN 201220327342U CN 202677125 U CN202677125 U CN 202677125U
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- CN
- China
- Prior art keywords
- circuit
- chip microcomputer
- switching
- feed
- controller
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- 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.)
- Expired - Fee Related
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Abstract
The utility model belongs to the technical field of safety equipment, and relates to a switching-off controller, comprising a single-chip microcomputer, wherein the switching-off control signal output by the single-chip microcomputer is isolated by an isolation circuit and output by a switching-off output circuit, the switching-off controller is provided with an explosion-proof housing and also comprises a communication circuit connected with the single-chip microcomputer, the communication circuit is used for connecting the switching-off controller with a CAN bus to realize remote power supplying and remote communication, the switching-off controller also comprises a feed detection circuit, and the input of the feed detection circuit is isolated by the isolation circuit and then input into the single-chip microcomputer, and the feed detection circuit is used for transmitting an active or reactive feed signal to the single-chip microcomputer. The switching-off controller has the advantages of integrating the switching-off control function with the feed control function in one, dispensing with an external independent power supply, and being simple in wiring.
Description
Technical field
The utility model belongs to the safety equipment technical field, relates to a kind of circuit breaking controller, can be applicable in mine or the tunnel or the safety feature of himself, the application scenarios such as transportation, filling, rescue, ventilation or draining.
Technical background
Be used in the China's coal-mine safety monitoring system for a long time outage control and feed condition collection all adopt two independently equipment finish and signal transmission switching value or analog signals.This mode more and more can not adapt to the requirement of information acquisition, transmission, processing and the field control of Modern Pit.
Along with the fast-developing and application of singlechip technology and network digital transmission technology, in various fields such as communication, Industry Control, lives revolutionary variation has occured all in recent years.It affects and has promoted change and the development of supervisory system technology equally, has occurred " fieldbus " of application of net to the supervisory system bottom thereupon.CAN_BUS obtains international standard the earliest in numerous fieldbus, also is through being considered to a kind of field bus technique of the most suitable colliery or non-coal mine supervisory system after the abundant demonstration.In addition, CAN_BUS is because performance and the very high cost performance of himself brilliance, thereby becomes a focus of industrial control field technical development, is acknowledged as one of the most promising several fieldbus.CAN_BUS has obtained wideling popularize in China's Industry Control and automatic field at present, and is that major contribution has been made in informationization, the modernization construction that promotes this field.
At present, the circuit breaker for coal mine safety monitoring system mainly contains the parts formations such as flameproof enclosure, signal receiving circuit, buffer circuit, transformer frequency response circuit, driving circuit, relay.This equipment must provide separately power supply, install more loaded down with trivial details, the short electromagnetic interference (EMI) that is subject to of signal transmission distance.Be used for feed and detect the main voltage signal that uses feed sensor indirectly to measure controlled device output terminal cable.Use the method detects because being subjected to the restriction of cable factor and environmental factor, detects the feed condition misoperation and can't detect feed condition frequently to occur.
The utility model content
The purpose of this utility model is the above-mentioned deficiency that overcomes domestic prior art, provides a kind of control of cutting off the power supply to detect the control checkout equipment that is integrated, does not need outside separately power supply, the transmission of CAN bus data with feed.
For this reason, the present invention adopts following technical scheme: a kind of circuit breaking controller, comprise single-chip microcomputer, the outage control signal of single-chip microcomputer output by the output of outage output circuit, is characterized in that through after the isolation of buffer circuit again, described circuit breaking controller is with flameproof enclosure, also comprise the communicating circuit that links to each other with single-chip microcomputer, described communicating circuit is used for circuit breaking controller is connected to the CAN bus, thereby realizes remote power feeding and telecommunication; Described circuit breaking controller also comprises the feed testing circuit, and the input of feed testing circuit is admitted to single-chip microcomputer through after the isolation of buffer circuit, is used for transmitting active or passive electric feed signal to single-chip microcomputer.
The utility model is to be powered by the intrinsic safety electric source in power extension controller or the bus extender, and the safety monitoring system that is used for take single-chip microcomputer as core realizes that outage is controlled and the circuit breaker of detection outage feed condition function.This circuit breaker is responsible for receiving the outage control command of associate device on the CAN bus, and controlled device is carried out outage control.Simultaneously, detect the feed condition of the equipment that is de-energized, will detect data communication device and cross CAN bus active upload to the ground central station main control computer.Major advantage is as follows:
[1] intelligent digital watch-dog
Obtain power off command on the CAN bus by passive receive mode, after processing through data analysis, realize controlled device outage control.When bus breaks down (namely not receiving signal within certain period), automatically to controlled device outage control.By detecting the voltage signal of controlled device output terminal, obtain feed condition.And will cut off the power supply, the feed data upload the ground central station main control computer immediately by the CAN bus after single-chip microcomputer is processed.
[2] data-transmission mode of innovation
Adopt first at home the communication mode of field apparatus Monitoring Data active upload, many main competitions in the coal mine safety monitoring system, abandoned principal and subordinate's patrol mode of traditional poor efficiency.The data transfer mode of this innovation has reduced the bus data flow to greatest extent, has greatly promoted the communication efficiency of system, has guaranteed the real-time of supervisory system data acquisition.
[3] Low-power Technology
This circuit breaker uses the low-power consumption microcontroller of MicroChip company as core cell, is aided with effective photoelectric isolation technology, and the relay of low-power consumption uses.When promoting the power supply service efficiency, greatly reduce power consumption, met the trend of energy-conserving and environment-protective.
[4] local, strange land outage control
Take into account the local and remote side power down function, can directly access switching value outage control signal and realize local power down function.Or the outage steering order of passing through CAN bus reception associate device or central station host realizes the strange land outage.
[5] fault detection capability
By the program in the single-chip microcomputer CAN bus signals that receives is detected, when within the period of regulation, not receiving signal, then be judged as malfunction, thereby implement outage control, after fault is got rid of, automatically terminate outage control.
[6] anti-interference and reliability design
Pcb printed wiring board rational deployment to circuit breaker designs, the feed testing circuit has been taked photoelectricity isolation and Anti-interference Design.On software, meticulously optimize simultaneously, make final products have very strong antijamming capability and reliability, fully satisfy colliery or the abominable site environment of non-coal mine.
Description of drawings
Fig. 1 circuit breaking controller electrical principle of the present utility model block scheme.
Embodiment
The utility model is a kind of CAN BUS digital monitoring equipment that is positioned at the on-the-spot bottom that is applied in the domestic coal mine safety monitoring system, is mainly used in receiving cut-offing instruction and carries out the feed detection to the implementation of the power-supply unit in driving face, coal-face and return air zone outage control and to power cutoff device.Initiatively upload outage and feed data to the central station main control computer by the CAN bus.
Circuit breaking controller is taked the Flameproof and intrinsically safe structural design, mainly is comprised of parts such as flameproof enclosure, outgoing line device, control Zhu Ban ﹑ outage feeder panels.Housing adopts welded-steel plate construction, meets the requirement of explosion proof of standard GB/T 3836.Circuit board module adopts the paster welding technology.Have the characteristics such as Ti Ji Xiao ﹑ Chong Liang Qing ﹑ is easy for installation.
Fig. 1 is the circuit principle structure block diagram of circuit breaking controller of the present utility model.Comprise take single-chip microcomputer as core coupled signal isolation circuit, outage output circuit, feed testing circuit, display circuit and communicating circuit.Communicating circuit links to each other with the CAN bus, and when on the bus native instructions being arranged, communicating circuit receives instruction, gives single-chip microcomputer with instruction.Single-chip microcomputer is that voltage signal is given the outage output circuit driving actuating of relay by buffer circuit with instruction transformation, realizes outage control.The source that has in the feed testing circuit is connected with the power supply output detections end of controlled device, and when electricity was arranged, feed testing circuit output " high level " was sent into single-chip microcomputer through buffer circuit.Otherwise single-chip microcomputer is sent in output " low level ".Single-chip microcomputer sends outage and feed detection data by communicating circuit to the central station main control computer.Simultaneously by luminotron indication communication duty, off-position, feed condition.For being adapted to the connection of substation control form, signal input circuit and feed output circuit have been kept.
Important technological parameters
1) type of protection [of an electrical apparatus for explosive atmospheres: mine flameproof and intrinsic safety type; Explosion-proof sign: Exd[ib] I
2) normal operation circumstances condition
Environment temperature: (0～40) ℃
Relative humidity :≤95%RH (25 ℃)
Atmospheric pressure: 80kPa～116kPa
Use is in the hazardous area that methane, coal dust explosion gaseous mixture are arranged.
3) operating voltage: intrinsic safety DC11V～DC19V.
4) rated voltage: intrinsic safety DC18V; Rated operational current≤30mA.
5) input/output signal
A) control inputs signal: voltage is not less than 3V during high level, and voltage is not more than 0.5V (pouring into electric current is 2mA) during low level.
B) passive feed input signal: the switching value contact signal, the cut-off state leakage resistance is not less than 100k Ω, and on-state voltage falls and should be not less than 0.5V (when electric current is 2mA).
C) active feed input signal: exchange 127V;
D) feed output signal: voltage is not less than 3V during high level, and voltage is not more than 0.5V (output current is 2mA) during low level.
6) output control
1 group relay contact (moving opening or dynamic circuit connector); Contact rating: AC127V/1.5A, DC36V/3A;
7) intrinsic safety parameter: U
i: DC18V; I
i: 30mA; C
i: 11.2pF; L
i: 0mH.
8) signal transmission: CAN bus digital signal, transfer rate 5kbps, transmission range: circuit breaker and the transmission range 3km that connects equipment.
9) physical dimension: L * W * H:232mm * 192 * 120mm
10) quality: 4kg.
Claims (1)
1. circuit breaking controller, comprise single-chip microcomputer, the outage control signal of single-chip microcomputer output is through after the isolation of buffer circuit, again by the output of outage output circuit, it is characterized in that, described circuit breaking controller also comprises the communicating circuit that links to each other with single-chip microcomputer with flameproof enclosure, described communicating circuit is used for circuit breaking controller is connected to the CAN bus, thereby realizes remote power feeding and telecommunication; Described circuit breaking controller also comprises the feed testing circuit, and the input of feed testing circuit is admitted to single-chip microcomputer through after the isolation of buffer circuit, is used for transmitting active or passive electric feed signal to single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220327342 CN202677125U (en) | 2012-07-06 | 2012-07-06 | Switching-off controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220327342 CN202677125U (en) | 2012-07-06 | 2012-07-06 | Switching-off controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202677125U true CN202677125U (en) | 2013-01-16 |
Family
ID=47498017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220327342 Expired - Fee Related CN202677125U (en) | 2012-07-06 | 2012-07-06 | Switching-off controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202677125U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113625043A (en) * | 2021-08-16 | 2021-11-09 | 中煤科工集团重庆研究院有限公司 | Feed state detection method for active and passive fusion detection |
| CN113625043B (en) * | 2021-08-16 | 2024-04-19 | 中煤科工集团重庆研究院有限公司 | Feed state detection method for active and passive fusion detection |
-
2012
- 2012-07-06 CN CN 201220327342 patent/CN202677125U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113625043A (en) * | 2021-08-16 | 2021-11-09 | 中煤科工集团重庆研究院有限公司 | Feed state detection method for active and passive fusion detection |
| CN113625043B (en) * | 2021-08-16 | 2024-04-19 | 中煤科工集团重庆研究院有限公司 | Feed state detection method for active and passive fusion detection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20180706 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |