CN202770977U - Multi-channel isolated intrinsically safe type power supply output failure identification device - Google Patents
Multi-channel isolated intrinsically safe type power supply output failure identification device Download PDFInfo
- Publication number
- CN202770977U CN202770977U CN201220444120.7U CN201220444120U CN202770977U CN 202770977 U CN202770977 U CN 202770977U CN 201220444120 U CN201220444120 U CN 201220444120U CN 202770977 U CN202770977 U CN 202770977U
- Authority
- CN
- China
- Prior art keywords
- power supply
- optocoupler
- intrinsically safe
- output
- road
- 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.)
- Expired - Lifetime
Links
Abstract
The utility model discloses a multi-channel isolated intrinsically safe type power supply output failure identification device. The device comprises a single chip microcomputer acquisition and processing unit and multiple output failure identification circuits. Each failure identification circuit is connected with one output of the isolated intrinsically safe type power supply correspondingly in a one-to-one manner. Each failure identification circuit comprises a voltage stabilizing diode, an optocoupler, an emitter resistor and a matching resistor. The negative electrode of the voltage stabilizing diode is connected with the positive electrode of one power supply output, the positive electrode of the voltage stabilizing diode is connected with the positive electrode of a light emitting diode of the optocoupler, the negative electrode of light-emitting diode of the optocoupler is connected to the negative electrode of the power supply output through the matching resistor, and the emitter resistor is serially connected onto the emitter output end of the optocoupler. The ratio of the emitter resistance value of the previous channel and the emitter resistor value of the next channel is 1/k, wherein k is an integer multiple of two. After the current passing through the emitter resistor is subjected to the I/V conversion, the voltage acquisition and data processing operation of each channel is completed by the single chip microcomputer acquisition and processing unit. The multi-channel isolated intrinsically safe type power supply output failure identification device of the utility model is applicable in the failure detection and positioning of a coal mine intrinsically safe type power supply, and advantages of safety, reliability and low cost can be realized.
Description
Technical field
The utility model relates to a kind of multichannel isolation intrinsically safe power supply output Fault Identification device.
Background technology
Flourish along with the China's coal-mine cause, the colliery electrification more and more is subject to people's attention, the particular surroundings in colliery, require electrical equipment in the hazardous environment that the damps such as gas, coal dust are arranged, can use safely, and no matter any fault appears in equipment, the blast that any spark that equipment produces or any thermal effect all can not cause ambient gas, and this is the essential safe type circuit, as " the heart "-power supply of electrically energized machine, the most important thing that its design just designs for electrical equipment.
The withstand voltage requirement of 500V is arranged between the intrinsically safe power supply for the isolation under the China's coal-mine, at present the duty of multiple power supplies is identified cost compare high, and circuit is complicated, and the defeated out of order method of at present multichannel isolation intrinsically safe power supply is to adopt multiple power supplies to detect the method for multi pass acquisition.
Summary of the invention
In view of this, the purpose of this utility model provides a kind of multichannel isolation intrinsically safe power supply output Fault Identification device.Safe and reliable and with low cost.
The purpose of this utility model is achieved through the following technical solutions:
This multichannel isolation intrinsically safe power supply output Fault Identification device, comprise single-chip microcomputer acquisition process unit and multichannel output fault identification circuit, each road fault identification circuit homogeneous one corresponding each road output that connects the isolation intrinsically safe power supply, described fault identification circuit comprises voltage stabilizing diode, optocoupler, emitter resistance and build-out resistor, the positive pole of the negative pole of described voltage stabilizing diode and the output of one road power supply links, the positive pole of the positive pole of described voltage stabilizing diode and the light emitting diode of optocoupler links, and the negative pole of the light emitting diode of optocoupler is attached to the negative pole of this road power supply output by build-out resistor;
Described emitter resistance is serially connected on the emitter-base bandgap grading output terminal of optocoupler, the emitter resistance value on last road is 1/k with the ratio of rear one tunnel emitter resistance value, k is 2 integral multiple, after the process of the electric current behind emitter resistance I/V conversion, finished voltage acquisition and the data on each road by single-chip microcomputer acquisition process unit and process.
Further, described k is 2.
The beneficial effects of the utility model are: the utility model is fit to the fault detect location of colliery intrinsically safe power supply to be selected, and it is safe and reliable and with low cost.
Other advantages of the present utility model, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on being apparent to those skilled in the art to investigating hereinafter, perhaps can from practice of the present utility model, be instructed.Target of the present utility model and other advantages can realize and obtain by following instructions and claims.
Description of drawings
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing the utility model is described in further detail, wherein:
Accompanying drawing 1 is circuit connection structure schematic diagram of the present utility model.
Embodiment
Hereinafter with reference to accompanying drawing, preferred embodiment of the present utility model is described in detail.Should be appreciated that preferred embodiment only for the utility model is described, rather than in order to limit protection domain of the present utility model.
Multichannel isolation intrinsically safe power supply output Fault Identification device of the present utility model, comprise single-chip microcomputer acquisition process unit and multichannel output fault identification circuit, each road fault identification circuit homogeneous one corresponding each road output that connects the isolation intrinsically safe power supply, fault identification circuit comprises voltage stabilizing diode, optocoupler, emitter resistance and build-out resistor, the positive pole of the negative pole of voltage stabilizing diode and the output of one road power supply links, the positive pole of the positive pole of voltage stabilizing diode and the light emitting diode of optocoupler links, and the negative pole of the light emitting diode of optocoupler is attached to the negative pole of this road power supply output by build-out resistor;
Emitter resistance is serially connected on the emitter-base bandgap grading output terminal of optocoupler, the emitter resistance value on last road is 1/k with the ratio of rear one tunnel emitter resistance value, k is 2 integral multiple, after the process of the electric current behind emitter resistance I/V conversion, finished voltage acquisition and the data on each road processes by single-chip microcomputer acquisition process unit, because the ratio relation between the emitter resistance value, the voltage on each road that therefore collects also presents corresponding ratio relation according to correspondence, levels characteristic under its normal condition is converted to the array mode of 2 systems, the 2 system state values that the numerical value that collects by single-chip microcomputer is corresponding with it compare, thereby whether identification power supply output fault occurs and power supply output fault occurs for which.
All be connected in series a voltage stabilizing diode between the positive pole of each road output of isolation intrinsically safe power supply and the optocoupler, judge by the stabilizing voltage characteristic of voltage stabilizing diode whether the intrinsically safe power supply magnitude of voltage is normal, specifically: voltage stabilizing diode is in cut-off state when undesired when power supply is exported, export voltage stabilizing diode conducting when normal when power supply, judge by cut-off and the conducting state of voltage stabilizing diode whether supply voltage value is normal like this.
As shown in Figure 1, the isolation intrinsically safe power supply has comprised the output on the 1 tunnel ~ the n road, whenever including on the way a voltage stabilizing diode (is ZD1 ~ ZDn), one optocoupler (is U1 ~ Un), one build-out resistor (is R1 ~ Rn) and an emitter resistance (R11 ~ Rnn), wherein the cathode output end on each road all is connected to the negative pole of voltage stabilizing diode, the cathode output end on each road all is attached to a build-out resistor, the positive pole of voltage stabilizing diode is attached to the positive pole of the light emitting diode of this road optocoupler, the other end of build-out resistor is attached to the negative pole of the light emitting diode of this road optocoupler, and the emitter-base bandgap grading output terminal of optocoupler is attached to emitter resistance.In the present embodiment, k gets 2, so when R11 got 1k, R22 was 2k, during to Rnn, is 2(n-1) k.
Explanation is at last, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from aim and the scope of the technical program, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (2)
1. multichannel isolation intrinsically safe power supply is exported the Fault Identification device, it is characterized in that: described device comprises single-chip microcomputer acquisition process unit and multichannel output fault identification circuit, each road fault identification circuit homogeneous one corresponding each road output that connects the isolation intrinsically safe power supply, described fault identification circuit comprises voltage stabilizing diode, optocoupler, emitter resistance and build-out resistor, the positive pole of the negative pole of described voltage stabilizing diode and the output of one road power supply links, the positive pole of the positive pole of described voltage stabilizing diode and the light emitting diode of optocoupler links, and the negative pole of the light emitting diode of optocoupler is attached to the negative pole of this road power supply output by build-out resistor;
Described emitter resistance is serially connected on the emitter-base bandgap grading output terminal of optocoupler, the emitter resistance value on last road is 1/k with the ratio of rear one tunnel emitter resistance value, k is 2 integral multiple, after the process of the electric current behind emitter resistance I/V conversion, finished voltage acquisition and the data on each road by single-chip microcomputer acquisition process unit and process.
2. multichannel isolation intrinsically safe power supply according to claim 1 is exported the Fault Identification device, and it is characterized in that: described k is 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220444120.7U CN202770977U (en) | 2012-09-03 | 2012-09-03 | Multi-channel isolated intrinsically safe type power supply output failure identification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220444120.7U CN202770977U (en) | 2012-09-03 | 2012-09-03 | Multi-channel isolated intrinsically safe type power supply output failure identification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202770977U true CN202770977U (en) | 2013-03-06 |
Family
ID=47777541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220444120.7U Expired - Lifetime CN202770977U (en) | 2012-09-03 | 2012-09-03 | Multi-channel isolated intrinsically safe type power supply output failure identification device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202770977U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634467A (en) * | 2015-12-29 | 2016-06-01 | 济宁科力光电产业有限责任公司 | Transistor safety output circuit capable of transforming output form |
| CN112462291A (en) * | 2020-11-08 | 2021-03-09 | 中国航空工业集团公司洛阳电光设备研究所 | Power-on detection circuit for multiple power supplies |
-
2012
- 2012-09-03 CN CN201220444120.7U patent/CN202770977U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634467A (en) * | 2015-12-29 | 2016-06-01 | 济宁科力光电产业有限责任公司 | Transistor safety output circuit capable of transforming output form |
| CN112462291A (en) * | 2020-11-08 | 2021-03-09 | 中国航空工业集团公司洛阳电光设备研究所 | Power-on detection circuit for multiple power supplies |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104577993A (en) | Input voltage protection circuit of switching power supply | |
| CN101988934A (en) | Undervoltage detection and alarm circuit | |
| CN102830369B (en) | Multichannel isolation intrinsically safe power supply exports fault recognition method | |
| CN202770977U (en) | Multi-channel isolated intrinsically safe type power supply output failure identification device | |
| CN203465391U (en) | High-voltage thyristor fault detection device without optical fiber isolation | |
| CN105811357B (en) | Current foldback circuit and the AI modules that the current foldback circuit is set | |
| CN202797898U (en) | Default phase automatic protective device for motor | |
| CN202372620U (en) | Detection circuit of circuit breaker | |
| CN205986096U (en) | Voltage protection circuit | |
| CN105322499B (en) | A kind of short-circuit protection circuit abnormal based on power source loads | |
| CN205355776U (en) | Short -circuit protection circuit based on power load is unusual | |
| CN204067750U (en) | A kind of leakage protecting plug | |
| CN104682334A (en) | Guard grating circuit and lamp | |
| CN102288808A (en) | LED (light-emitting diode) over-current detection circuit and LED driving control circuit | |
| CN205986099U (en) | Bluetooth transmission module of tape light | |
| CN203504786U (en) | Electromagnetic heating control circuit and electric pressure cooker | |
| CN202889694U (en) | Constant current circuit protection line | |
| CN202854266U (en) | Short-circuit indicator for main transformer secondary side of electric locomotive | |
| CN101169342B (en) | Cable adapter temperature monitoring system | |
| CN104393563A (en) | Mains supply monitoring system | |
| CN202797876U (en) | Mining intrinsic safety type light-emitting diode (LED) display screen | |
| CN202230126U (en) | Middle-high voltage electrification indicating circuit with good rectification effect | |
| CN202712815U (en) | Electronic circuit over-voltage protector | |
| CN202435645U (en) | Led lamp circuit | |
| CN209329734U (en) | A kind of single lithium battery protection IC increases the circuit of temperature detection defencive function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA COAL TECHNOLOGY ENGINEERING GROUP CHONGQING Free format text: FORMER NAME: CHINA COAL SCIENCE AND INDUSTRY GROUP CHONGQING RESEARCH INSTITUTE |
|
| CP03 | Change of name, title or address |
Address after: 400039 Chongqing Jiulongpo Branch City Road No. 6 Patentee after: CHONGQING RESEARCH INSTITUTE CO., LTD. OF CHINA COAL TECHNOLOGY & ENGINEERING Group Address before: 400037, No. three village, 55 bridge, Shapingba District, Chongqing Patentee before: Chongqing Research Institute of China Coal Technology & Engineering Group Corp. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130306 |
|
| CX01 | Expiry of patent term |