CN201820344U - Coal mine safety monitoring equipment signal anti-interference transmission system - Google Patents
Coal mine safety monitoring equipment signal anti-interference transmission system Download PDFInfo
- Publication number
- CN201820344U CN201820344U CN2010201382439U CN201020138243U CN201820344U CN 201820344 U CN201820344 U CN 201820344U CN 2010201382439 U CN2010201382439 U CN 2010201382439U CN 201020138243 U CN201020138243 U CN 201020138243U CN 201820344 U CN201820344 U CN 201820344U
- Authority
- CN
- China
- Prior art keywords
- substation
- signal
- master station
- holding circuit
- communication chip
- 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
Images
Landscapes
- Synchronisation In Digital Transmission Systems (AREA)
- Selective Calling Equipment (AREA)
Abstract
The utility model relates to a coal mine safety monitoring equipment signal anti-interference transmission system. The master station central processing unit (CPU) and the substation CPU of the system are respectively connected with a master station communication chip and a substation communication chip; the master station communication chip is connected with a master station clock circuit, a master station signal sending drive and protection circuit and a master station signal receiving shaping and protection circuit; the substation communication chip is connected with a substation clock circuit, a substation signal sending drive and protection circuit and a substation signal receiving shaping and protection circuit; the master station communication chip is connected with a substation chip through a sending and receiving circuit; the output part of the substation signal receiving shaping and protection circuit is also connected with the detection signal input end a lock phase singlechip; and the control signal output end of the lock phase singlechip is connected with the substation clock circuit. The utility model has strong anti-interference capacity and stable and reliable signal transmission.
Description
Technical field
The utility model relates to the anti-interference transmission system of a kind of coal mine safety monitoring device signal.
Background technology
Coal mine safety monitoring equipment is provided with substation and main website usually, and communicating by letter between substation and the main website is one of its major function, the general employing asynchronous communication means of communicate by letter between existing main website and the substation, but this communication mode and method of synchronization ratio, poor anti jamming capability.The synchronous communication mode antijamming capability is strong, and device inside contains hardware CRC check, better reliability.But communication between devices semaphore request same frequency same-phase when communication.Because the discreteness of electronic devices and components and the operation time difference, under situation about not processing, can't be between substation and the main website with homophase frequently, also just can't proper communication.
Summary of the invention
Technical problem to be solved in the utility model is, provides that a kind of antijamming capability is strong, stable signal transmission, the anti-interference transmission system of coal mine safety monitoring device signal reliably.
The anti-interference transmission system of coal mine safety monitoring device signal of the present utility model includes respectively CPU in master station and the substation CPU that main website equipment and sub-station equipment are controlled, and CPU in master station and substation CPU are connected with master station communication chip and sub-station communication chip respectively; Described master station communication chip is connected with the main website clock circuit, the main website signal sends driving and holding circuit, main website signal reception shaping and holding circuit; Described sub-station communication chip is connected with the substation clock circuit, the substation signal sends driving and holding circuit, the reception shaping of substation signal and holding circuit; Main website signal transmission drives and holding circuit receives shaping by signal cable with the substation signal and holding circuit is connected, and the substation signal sends driving and holding circuit is connected with main website signal reception shaping and holding circuit by signal cable; The output of described substation signal reception shaping and holding circuit also connects the detection signal input end of a phase-locked single-chip microcomputer, and the control signal output ends of phase-locked single-chip microcomputer is connected to the substation clock circuit.
System of the present utility model utilizes phase locking to add the hardware CRC check function that communication chip itself has, even signal of communication is interfered and produces distortion, as long as the distortion part is not in the moment that receiving end reads, the communication data mistake can not appear just, improved its anti-ability.Use product of the present utility model its communication stability and reliability in electromagnetic compatibility test obviously to be better than asynchronous communication means.
Description of drawings
Fig. 1 is a schematic diagram of the present utility model.
Embodiment
As shown in the figure, this system includes respectively CPU in master station 1 and the substation CPU4 that main website equipment and sub-station equipment are controlled, and CPU in master station and substation CPU are connected with master station communication chip 2 and sub-station communication chip 5 respectively; Described master station communication chip 2 is connected with main website clock circuit 3, the main website signal sends and drives and holding circuit 8, main website signal reception shaping and holding circuit 9; Described sub-station communication chip 5 is connected with substation clock circuit 6, the substation signal sends and drives and holding circuit 10, the reception shaping of substation signal and holding circuit 11; Main website signal transmission drives and holding circuit 8 receives shaping by signal cable with the substation signal and holding circuit 11 is connected, and the substation signal sends driving and holding circuit 10 is connected with main website signal reception shaping and holding circuit 9 by signal cable; The output of described substation signal reception shaping and holding circuit 11 also connects the detection signal input end of a phase-locked single-chip microcomputer 7, and the control signal output ends of phase-locked single-chip microcomputer 7 is connected to substation clock circuit 6.
Claims (1)
1. the anti-interference transmission system of coal mine safety monitoring device signal includes respectively CPU in master station and the substation CPU that main website equipment and sub-station equipment are controlled, and it is characterized in that: CPU in master station and substation CPU are connected with master station communication chip and sub-station communication chip respectively; Described master station communication chip is connected with the main website clock circuit, the main website signal sends driving and holding circuit, main website signal reception shaping and holding circuit; Described sub-station communication chip is connected with the substation clock circuit, the substation signal sends driving and holding circuit, the reception shaping of substation signal and holding circuit; Main website signal transmission drives and holding circuit receives shaping by signal cable with the substation signal and holding circuit is connected, and the substation signal sends driving and holding circuit is connected with main website signal reception shaping and holding circuit by signal cable; The output of described substation signal reception shaping and holding circuit also connects the detection signal input end of a phase-locked single-chip microcomputer, and the control signal output ends of phase-locked single-chip microcomputer is connected to the substation clock circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201382439U CN201820344U (en) | 2009-12-22 | 2010-03-02 | Coal mine safety monitoring equipment signal anti-interference transmission system |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920282902 | 2009-12-22 | ||
| CN200920282902.3 | 2009-12-22 | ||
| CN2010201382439U CN201820344U (en) | 2009-12-22 | 2010-03-02 | Coal mine safety monitoring equipment signal anti-interference transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201820344U true CN201820344U (en) | 2011-05-04 |
Family
ID=43918291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201382439U Expired - Lifetime CN201820344U (en) | 2009-12-22 | 2010-03-02 | Coal mine safety monitoring equipment signal anti-interference transmission system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201820344U (en) |
-
2010
- 2010-03-02 CN CN2010201382439U patent/CN201820344U/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2447872B1 (en) | Method and device for managing information exchange between for example a NFC controller and a set of at least two secure elements. | |
| CN101840387B (en) | USB (Universal Serial Bus) Key device and method for realizing smart card communications using USB interface | |
| CN101312302B (en) | Parallel signal transmission method of uninterrupted power source | |
| US10218492B2 (en) | Clock and data recovery for pulse based multi-wire link | |
| EP1751664A1 (en) | Bi-directional serial interface for communication control | |
| CN103106168A (en) | Automatic serial port protection circuit | |
| CN102929830A (en) | Software simulation rapid communication protocol | |
| CN201708806U (en) | Clock synchronous signal transmission circuit | |
| CN201820344U (en) | Coal mine safety monitoring equipment signal anti-interference transmission system | |
| CN102420675B (en) | Methods and devices for transmitting and receiving using state information of buffer of data message | |
| CN103702356A (en) | TDD (time division duplexing) system-based fault diagnosis device | |
| CN116015324A (en) | UART data receiving device for enhancing anti-interference and receiving method thereof | |
| CN203912045U (en) | Digital forwarding relay modem self-adaptive to a variety of modulation modes | |
| CN101686083A (en) | Data optical receiver | |
| CN113111021A (en) | UART master-slave line communication control circuit and method | |
| CN201910801U (en) | Circuit for realizing hot-swapping function of optical fiber passage port | |
| CN202856782U (en) | Automatic receiving/transmitting and converting device for HART communication signals | |
| CN110896349B (en) | Secret key safety device | |
| CN201795734U (en) | Digital electronic primer detonator adapting Manchester encoding technique | |
| CN105991221B (en) | Data transmitting/receiving means and method and data receiving-transmitting system | |
| CN103477332A (en) | Control device having a digital interface | |
| CN104468034A (en) | Transponder transmission host | |
| CN104683116B (en) | A kind of mining RS 485 isolates repeater | |
| CN108200645A (en) | A kind of on-vehicle positioning terminal | |
| CN204442400U (en) | A kind of mining RS-485 isolates repeater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110504 |