CN201106455Y - Flame proof and essence safe type signal isolater for coal mine - Google Patents
Flame proof and essence safe type signal isolater for coal mine Download PDFInfo
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- CN201106455Y CN201106455Y CNU2007201884397U CN200720188439U CN201106455Y CN 201106455 Y CN201106455 Y CN 201106455Y CN U2007201884397 U CNU2007201884397 U CN U2007201884397U CN 200720188439 U CN200720188439 U CN 200720188439U CN 201106455 Y CN201106455 Y CN 201106455Y
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Abstract
The utility model provides a coal mine used flameproof and intrinsically safe signal isolator which is characterized in that the utility model is composed of a first transceiver, a second transceiver, a first controller, a second controller and a first, a second, a third and a fourth isolators. The first transceiver is connected in series with the first isolator, and is connected with the second transceiver. The second transceiver is connected in series with the second isolator, and is connected with the first transceiver. The first transceiver receives signals of the first controller, and the second transceiver receives signals of the second controller. The first controller is connected in series with the third isolator, and is connected with the second controller. The second controller is connected in series with the fourth isolator, and is connected with the first controller. The coal mine used flameproof and intrinsically safe signal isolator has the remarkable effects of simple structure, compact volume, low cost and reliable performance, and simultaneously, prevents burnout because non intrinsic safe terminal voltage and electric current suddenly increase, and a fuse wire and a varistor can ensure that a circuit in the inside of the isolator cannot be burned out.
Description
Technical field
The utility model belongs to the safety of sympathetic initiation device of using a kind of down-hole, is specifically related to a kind of colliery Flameproof intrinsically safe signal isolator.
Background technology
The peace of the high and low voltage switch on the market is marked the technical finesse of only having done the flame proof processing and not done essential safety, in this case, communication line is directly inserted substation by the intrinsic safety junction box, and this does not meet the safety code in colliery.Therefore need a kind of spacer assembly that the electric power transfer substation of grid monitoring system and the communication line of high and low voltage switch are coupled together.The JK-1 coffret that uses in the KJ91 coal mine safety monitoring system of Fuye Tech Co., Ltd., Nanjing is arranged on market at present, this interface is a kind of mine flameproof and intrinsic safety type safety barrier, is used to realize that the signal between ground central station and the ZJB-30FD mine explosion-suppression and intrinsic safety fan stoppage breaker (outstation) transmits.Also have the explosion-proof zena's safety barrier of S2008 in the S2000 series that Luoyang Yixing Petrochemical Electrical Appliance ﹠ Instrumentation Co., Ltd. produces, go up the S800 series essential safe type zena's safety barrier of the electric Development Co., Ltd of Hai'an intelligence development etc.The KJA9 type safety isolator of Tiandi science and technology Co., Ltd of Changzhou Automation Inst. of Coal Scientific Research Central Inst. development, this safe isolator are realized the isolation transmission of non-intrinsic safety RS485 signal and intrinsic safety RS485 signal.But it is bigger that these safety barriers all exist volume, characteristics on the high side.
The shortcoming of conventional art is: do not have a kind of Flameproof intrinsically safe signal isolator that volume is little, price is low that is suitable for.
The utility model content
The purpose of this utility model provides a kind of simple in structure, the colliery that volume is little Flameproof intrinsically safe signal isolator.
For achieving the above object, a kind of colliery described in the utility model Flameproof intrinsically safe signal isolator, its key is: by first transceiver, second transceiver, first controller, second controller and first isolator, second isolator, the 3rd isolator, the 4th isolator is formed, the I/O end A of first transceiver and second transceiver wherein, B receives and sends external signal respectively, the information output RO of described first transceiver goes here and there behind described first isolator, be connected with the information input terminal DI of second transceiver again, the information output RO of second transceiver goes here and there behind described second isolator, be connected mutual transmission communication information between first transceiver and second transceiver again with the information input terminal DI of first transceiver;
Reception Enable Pin/the RE of described first transceiver and output enable end DE are attempted by on the control output end Q3 of described first controller, receive the control signal of first controller, reception Enable Pin/the RE of described second transceiver and output enable end DE are attempted by on the control output end Q2 of described second controller, receive the control signal of second controller;
Control output end/the Q1 of described first controller goes here and there behind described the 3rd isolator, be connected with the removing end/CLR2 of described second controller again, control output end/the Q4 of described second controller goes here and there behind described the 4th isolator, be connected transmission control information mutually between described first controller and second controller again with the removing end/CLR1 of described first controller.
Described first isolator, second isolator are optocoupler, described first transceiver and second transceiver are 485 communication interface chips, in two communication chips one when being transmitting terminal 485 communication interface chips, another is receiving terminal 485 communication interface chips, the information output RO of described transmitting terminal 485 communication interface chips connects the negative electrode of described optocoupler input, connects positive source behind the anode series resistance of this optocoupler input; The grounded emitter of optocoupler output, optocoupler output colelctor electrode is connected with positive supply through pull-up resistor, and this output colelctor electrode connects the information input terminal DI pin of described receiving terminal 485 communication interface chips.
Described the 3rd isolator, the 4th isolator is an optocoupler, described first controller and second controller are monostable flipflop, two controller (U3, U4) one is when controlling the monostable flipflop of 485 communication transmitting terminal chips in, another is the monostable flipflop of control 485 communication receiving terminal chips, wherein control 485 communication transmitting terminal chips monostable flipflop negative pulse output/Q1 or/Q2 connects the negative electrode of described optocoupler input, connect positive source after the anode series resistance of optocoupler input, the grounded emitter of optocoupler output, connect high level after the collector series resistance of optocoupler output, the colelctor electrode of this optocoupler output also is connected with the removing end CLR of described receiving terminal monostable flipflop.
Be connected with piezo-resistance D between I/O end A, the B of described first transceiver, described I/O end A, B also are serially connected with fuse respectively and link to each other with the external world.
Used power isolation module DC3 in isolator, this power isolation module (DC3) is that first transceiver (U1) and first controller (U3) provide one road power supply, is that second transceiver (U2) and second controller (U4) provide another road power supply.The isolated from power at first isolator, second isolator, the 3rd isolator, the 4th isolator two ends is opened, strengthened antijamming capability of the present utility model.
Fuse Type and photoelectric-isolated structure combining are adopted in this design, in order to guarantee that signal isolator RS485 signal accurately transmits, the model of first transceiver and second transceiver is the 75LBC184 chip, the two connects back-to-back, the model 74HC123 monostable flipflop of first controller and second controller is controlled two 75LBC184 chips respectively.
Adopting optocoupler to carry out the signal isolation between two 75LBC184 chips, between the 74HC123 monostable flipflop control signal, guarantee the less interference that signal of communication and control signal are subjected to like this.Simultaneously, prevent to increase suddenly because of non-intrinsic safety terminal voltage, electric current, in two fuses of RS485 inlet wire two ends polyphone and piezo-resistance in parallel, when non-intrinsic safety brought out existing abnormal overvoltage, electric current increase, assurance isolator internal circuit was not burnt out like this.Adopt power isolation module simultaneously, strengthened the communication information anti-jamming capacity.
Remarkable result of the present utility model is: simple in structure, volume is little, price is low, and dependable performance simultaneously, prevents to increase suddenly because of non-intrinsic safety terminal voltage, electric current, and fuse and piezo-resistance can guarantee that the isolator internal circuit is not burnt out.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
A kind of as shown in Figure 1 colliery Flameproof intrinsically safe signal isolator, by the first transceiver U1, the second transceiver U2, the first controller U3, the second controller U4 and first isolator, second isolator, the 3rd isolator, the 4th isolator is formed, the I/O end A of the first transceiver U1 and the second transceiver U2 wherein, B receives and sends external signal respectively, the information output RO of the described first transceiver U1 goes here and there behind described first isolator, information input terminal DI with the second transceiver U2 is connected again, the information output RO of the second transceiver U2 goes here and there behind described second isolator, information input terminal DI with the first transceiver U1 is connected again, mutual transmission communication information between the first transceiver U1 and the second transceiver U2;
Reception Enable Pin/the RE of the described first transceiver U1 and output enable end DE are attempted by on the control output end Q3 of the described first controller U3, receive the control signal of the first controller U3, reception Enable Pin/the RE of the described second transceiver U2 and output enable end DE are attempted by on the control output end Q2 of the described second controller U4, receive the control signal of the second controller U4;
Control output end/Q1 of the described first controller U3 goes here and there behind described the 3rd isolator, removing end/CLR2 with the described second controller U4 is connected again, control output end/Q4 of the described second controller U4 goes here and there behind described the 4th isolator, removing end/CLR1 with the described first controller U3 is connected again, transmission control information mutually between the described first controller U3 and the second controller U4.
Described first isolator, second isolator are optocoupler, the described first transceiver U1 and the second transceiver U2 are 485 communication interface chips, among two communication chip U1, the U2 one when being transmitting terminal 485 communication interface chips, another is receiving terminal 485 communication interface chips, the information output RO of described transmitting terminal 485 communication interface chips connects the negative electrode of described optocoupler input, connects positive source behind the anode series resistance of this optocoupler input; The grounded emitter of optocoupler output, the colelctor electrode of optocoupler output is connected with positive supply through pull-up resistor, and this output colelctor electrode connects the information input terminal DI pin of described receiving terminal 485 communication interface chips.
Described the 3rd isolator, the 4th isolator is an optocoupler, the described first controller U3 and the second controller U4 are monostable flipflop, two controller U3, one is when controlling the monostable flipflop of 485 communication transmitting terminal chips among the U4, another is the monostable flipflop of control 485 communication receiving terminal chips, wherein control 485 communication transmitting terminal chips monostable flipflop negative pulse output/Q1 or/Q2 connects the negative electrode of described optocoupler input, connect positive source after the anode series resistance of optocoupler input, the grounded emitter of optocoupler output, connect high level after the collector series resistance of optocoupler output, the colelctor electrode of this optocoupler output also is connected with the removing end CLR of described receiving terminal monostable flipflop.
Be connected with piezo-resistance D between I/O end A, the B of the described first transceiver U1, described I/O end A, B also are serially connected with fuse respectively and link to each other with the external world.
Used power isolation module in isolator, this power isolation module (DC3) is that first transceiver (U1) and first controller (U3) provide one road power supply, is that second transceiver (U2) and second controller (U4) provide another road power supply.And the isolated from power at first isolator, second isolator, the 3rd isolator, the 4th isolator two ends opened, strengthened antijamming capability of the present utility model.
Fuse Type and photoelectric-isolated structure combining are adopted in this design, in order to guarantee that signal isolator RS485 signal accurately transmits, the model of the first transceiver U1 and the second transceiver U2 is the 75LBC184 chip, the two connects back-to-back, the model 74HC123 monostable flipflop of the first controller U3 and the second controller U4 is controlled two 75LBC184 chips respectively.
Adopting optocoupler to carry out the signal isolation between two 75LBC184 chips, between the 74HC123 monostable flipflop control signal, guarantee the less interference that signal of communication and control signal are subjected to like this.Simultaneously, prevent to increase suddenly because of non-intrinsic safety terminal voltage, electric current, in two fuses of RS485 inlet wire two ends polyphone and piezo-resistance in parallel, when non-intrinsic safety brought out existing abnormal overvoltage, electric current increase, assurance isolator internal circuit was not burnt out like this.Adopt power isolation module simultaneously, strengthened the communication information anti-jamming capacity.
The power supply of signal isolator needs+5V power supply can be introduced from the electric power substation for this reason, because the power supply of electric power substation is an intrinsic safety electric source, so as safe as a house and convenient.
Its operating principle is:
The first transceiver U1 is connected with non-intrinsic safety end, the second transceiver U2 connects with the intrinsic safety end, the signal of non-intrinsic safety end is after the first transceiver U1 sends to first optocoupler U6B isolation, send to the second transceiver U2 again, the second transceiver U2 sends information again to the intrinsic safety end, and is same, and the signal of intrinsic safety end is after the second transceiver U2 sends to second optocoupler U5B isolation, send to the first transceiver U1 again, the first transceiver U1 sends information again to non-intrinsic safety end.
The first controller U3 controls first transceiver U1 work, the second controller U4 controls second transceiver U2 work, simultaneously, the first controller U3 sends to the second controller U4 through the 3rd optocoupler U6A with control information, the second controller U4 sends to the first controller U3 through the 4th optocoupler U5A with control information, coordinates the control function between the two.
Claims (5)
1, a kind of colliery Flameproof intrinsically safe signal isolator, it is characterized in that: by first transceiver (U1), second transceiver (U2), first controller (U3), second controller (U4) and first isolator, second isolator, the 3rd isolator, the 4th isolator is formed, I/O end (the A of first transceiver (U1) and second transceiver (U2) wherein, B) receive and send external information respectively, the information output RO of described first transceiver (U1) goes here and there behind described first isolator, information input terminal DI with second transceiver (U2) is connected again, the information output RO of second transceiver (U2) goes here and there behind described second isolator, information input terminal DI with first transceiver (U1) is connected again, mutual transmission communication information between first transceiver (U1) and second transceiver (U2);
Reception Enable Pin/the RE of described first transceiver (U1) and output enable end DE are attempted by on the control output end Q3 of described first controller (U3), receive the control signal of first controller (U3), reception Enable Pin/the RE of described second transceiver (U2) and output enable end DE are attempted by on the control output end Q2 of described second controller (U4), receive the control signal of second controller (U4);
Control output end/the Q1 of described first controller (U3) goes here and there behind described the 3rd isolator, removing end/CLR2 with described second controller (U4) is connected again, control output end/the Q4 of described second controller (U4) goes here and there behind described the 4th isolator, removing end/CLR1 with described first controller (U3) is connected again, transmission control information mutually between described first controller (U3) and second controller (U4).
2, colliery according to claim 1 Flameproof intrinsically safe signal isolator, it is characterized in that: described first isolator, second isolator are optocoupler, described first transceiver (U1) and second transceiver (U2) are 485 communication interface chips, in two communication chips (U1, U2) one when being transmitting terminal 485 communication interface chips, another is receiving terminal 485 communication interface chips, the information output RO of described transmitting terminal 485 communication interface chips connects the input negative electrode of described optocoupler, connects positive source behind the input anode series resistance of this optocoupler; The grounded emitter of optocoupler output, optocoupler output colelctor electrode is connected with positive supply through pull-up resistor, and this output colelctor electrode connects the information input terminal DI pin of described receiving terminal 485 communication interface chips.
3, colliery according to claim 1 Flameproof intrinsically safe signal isolator, it is characterized in that: described the 3rd isolator, the 4th isolator is an optocoupler, described first controller (U3) and second controller (U4) are monostable flipflop, two controller (U3, U4) one is when controlling the monostable flipflop of 485 communication transmitting terminal chips in, another is the monostable flipflop of control 485 communication receiving terminal chips, wherein control 485 communication transmitting terminal chips monostable flipflop negative pulse output/Q1 or/Q2 connects the negative electrode of described optocoupler input, connect positive source after the anode series resistance of optocoupler input, the grounded emitter of optocoupler output, connect high level after the collector series resistance of optocoupler output, the colelctor electrode of this optocoupler output also is connected with the removing end/CLR of described receiving terminal monostable flipflop.
4, colliery according to claim 1 Flameproof intrinsically safe signal isolator, it is characterized in that: be connected with piezo-resistance D between the I/O end of described first transceiver (U1) (A, B), described I/O end (A, B) also is serially connected with fuse respectively and links to each other with the external world.
5, colliery according to claim 1 Flameproof intrinsically safe signal isolator, it is characterized in that: also be provided with power isolation module (DC3), this power isolation module (DC3) is that first transceiver (U1) and first controller (U3) provide one road power supply, is that second transceiver (U2) and second controller (U4) provide another road power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201884397U CN201106455Y (en) | 2007-12-07 | 2007-12-07 | Flame proof and essence safe type signal isolater for coal mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201884397U CN201106455Y (en) | 2007-12-07 | 2007-12-07 | Flame proof and essence safe type signal isolater for coal mine |
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| CN201106455Y true CN201106455Y (en) | 2008-08-27 |
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| CNU2007201884397U Expired - Fee Related CN201106455Y (en) | 2007-12-07 | 2007-12-07 | Flame proof and essence safe type signal isolater for coal mine |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102142850A (en) * | 2010-02-03 | 2011-08-03 | 中电广通股份有限公司 | Intrinsic-safety radio frequency signal isolator |
| CN102185467A (en) * | 2011-04-28 | 2011-09-14 | 广州金升阳科技有限公司 | Method for improving isolation optocoupler control reliability and circuit |
| CN102855677A (en) * | 2012-09-18 | 2013-01-02 | 深圳市神拓机电设备有限公司 | Mining flameproof and intrinsically safe access controller |
| CN102923007A (en) * | 2012-11-27 | 2013-02-13 | 深圳市德塔电动汽车科技有限公司 | Flame-proof and intrinsic safety type power controller for mine |
| CN103500981A (en) * | 2013-09-26 | 2014-01-08 | 南阳防爆电气研究所有限公司 | Intrinsic safety correlator for connecting non-intrinsic safety circuit with ac/dc (alternating-current/direct-current) intrinsic safety circuit |
| CN108983669A (en) * | 2018-08-06 | 2018-12-11 | 北方工业大学 | Intrinsic safety pilot circuit |
-
2007
- 2007-12-07 CN CNU2007201884397U patent/CN201106455Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102142850A (en) * | 2010-02-03 | 2011-08-03 | 中电广通股份有限公司 | Intrinsic-safety radio frequency signal isolator |
| CN102185467A (en) * | 2011-04-28 | 2011-09-14 | 广州金升阳科技有限公司 | Method for improving isolation optocoupler control reliability and circuit |
| CN102185467B (en) * | 2011-04-28 | 2014-01-29 | 广州金升阳科技有限公司 | Method for improving isolation optocoupler control reliability and circuit |
| CN102855677A (en) * | 2012-09-18 | 2013-01-02 | 深圳市神拓机电设备有限公司 | Mining flameproof and intrinsically safe access controller |
| CN102923007A (en) * | 2012-11-27 | 2013-02-13 | 深圳市德塔电动汽车科技有限公司 | Flame-proof and intrinsic safety type power controller for mine |
| CN103500981A (en) * | 2013-09-26 | 2014-01-08 | 南阳防爆电气研究所有限公司 | Intrinsic safety correlator for connecting non-intrinsic safety circuit with ac/dc (alternating-current/direct-current) intrinsic safety circuit |
| CN103500981B (en) * | 2013-09-26 | 2016-03-16 | 南阳防爆电气研究所有限公司 | A kind of intrinsic safety correlator connecting non-intrinsically safe circuit and AC/DC intrinsically safe circuit |
| CN108983669A (en) * | 2018-08-06 | 2018-12-11 | 北方工业大学 | Intrinsic safety pilot circuit |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA COAL SCIENCE AND INDUSTRY GROUP CHONGQING RE Free format text: FORMER NAME: COAL SCIENTIFIC RESEARCH INSTITUTE CHONGQING INSTITUTE Owner name: CHINA COAL TECHNOLOGY ENGINEERING GROUP CHONGQING Free format text: FORMER NAME: CHINA COAL SCIENCE AND INDUSTRY GROUP CHONGQING RESEARCH INSTITUTE |
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| CP01 | Change in the name or title of a patent holder |
Address after: 400037, No. three village, 55 bridge, Shapingba District, Chongqing Patentee after: Chongqing Research Institute of China Coal Technology & Engineering Group Corp. Address before: 400037, No. three village, 55 bridge, Shapingba District, Chongqing Patentee before: Chongqing Institute of Coal Science Research Institute |
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| 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. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080827 Termination date: 20151207 |
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| EXPY | Termination of patent right or utility model |