CN203178732U - Fire control information transmission motherboard - Google Patents
Fire control information transmission motherboard Download PDFInfo
- Publication number
- CN203178732U CN203178732U CN 201320158766 CN201320158766U CN203178732U CN 203178732 U CN203178732 U CN 203178732U CN 201320158766 CN201320158766 CN 201320158766 CN 201320158766 U CN201320158766 U CN 201320158766U CN 203178732 U CN203178732 U CN 203178732U
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Abstract
The utility model discloses a fire control information transmission motherboard comprising an embedded microcontroller. A crystal oscillator circuit, a reset circuit, a BOOT functional circuit, a JTAG interface circuit, an overall function selection circuit, a real-time clock circuit, a power supply main standby power detection circuit, a memory circuit, a key input circuit, an indicator light interface circuit, an liquid crystal display interface circuit, a sound alarm circuit, an expansion interface circuit, an optocoupler protection circuit, and a serial communication interface circuit are connected with the embedded microprocessor. The motherboard provided by the utility model takes factors such as circuit board size, specific component layout, wiring, optoelectronic isolation, electromagnetic compatibility, interference resistance, and the like into consideration. The motherboard has the characteristics of high reliability and high stability, such that fire control information real-time reliable transmission and alarming can be realized.
Description
Technical field
The utility model relates to the fire information transmission technology field, particularly a kind of fire information transmission motherboard.
Background technology
Along with China's rapid development of economy, the skyscraper of function complexity, intensive public place, the large-sized workshop warehouse of personnel get more and more, and automatic fire alarm system has also obtained application more and more widely.But in actual applications, the collecting and distributing type automatic fire alarm system in the buildings has not been given play to its maximum efficiency now, and the phenomenon of failing to report and reporting by mistake of fire alarm happens occasionally, and brings great potential safety hazard for people's the security of the lives and property.
The fire-fighting transmission equipment is used for reception and is transferred to the backstage from the fire alarm information of automatic fire alarm and by network.The function of most of fire-fighting transmission equipments on the market is all more single at present, is difficult to compatible various accesses of producing the automatic fire alarm of family, and the bus access way is also more single simultaneously, and the system expandability is relatively poor.
The shortcoming of traditional wire transmission be hardware fault that the lead layout causes higher be the influence that signal quality is subjected to wire quality, system stability is not strong; Along with continuing to increase of current monitoring range and distance, the user improves constantly product requirement, the continuous maturation of new component and new technology, the fire alarm transmission system with advantages such as transmission quality height, antijamming capability are strong more and more is subjected to people's favor.
The fire-fighting electronic product in use runs into unexpected voltage transient and surge through regular meeting, thereby causes the damage of motherboard, and the reason of damage is that the semiconductor devices (comprising diode, transistor, controllable silicon and integrated circuit etc.) in the motherboard is burnt or punctures.According to estimates, the fault of fire fighting equipment have 75% since transition and surge cause.Transition and the surge of voltage are ubiquitous, and electrical network, thunderbolt etc. all can produce the electrostatic induction voltage of volts up to ten thousand, therefore, in order to improve the reliability and stability of motherboard, must add in circuit board voltage transient and surge are taked safeguard procedures.Surge is a kind of ascending velocity height, short spike of duration.It produces reason is many-sided, such as: electrical network overvoltage, switch sparking, static, power supply noise etc.
In the fire fighting monitoring transmission system, the accuracy of data is very important, failing to report and reporting by mistake never of fire alarm information allows, otherwise the consequence of bringing is hardly imaginable, so must guarantee at first that at fire alarm information acquisition end system gathers the fire alarm information data like clockwork.
TVS (Transient Voltage Suppressor) is the device of spike on a kind of new and effective absorption electric power incoming line.TVS claims transient voltage suppressor again, in fact is a kind of special voltage stabilizing diode.When the high energy impact events of moment is stood at its two ends; it can become Low ESR by high impedance with the resistance value that high speed is asked two ends; absorb instantaneous large-current; thereby its both end voltage is clamped down on a predetermined numerical value, protected the circuit component of back not to be subjected to the impact of high voltage transient spike.Just because of this, its lightning protection effect is also fine.
Summary of the invention
The shortcoming that the purpose of this utility model is to overcome prior art provides a kind of good reliability and the high fire information motherboard of stability with not enough.
The purpose of this utility model is achieved through the following technical solutions:
The utility model fire information transmission motherboard; comprise embedded microcontroller, the crystal oscillating circuit that is connected with embedded microcontroller, reset circuit, BOOT functional circuit, jtag interface circuit, allomeric function are selected circuit, real time clock circuit, power supply main standby power detection circuit, memory circuitry, button inputting circuits, pilot lamp interface circuit, LCD interface circuit, audible alarm circuit, expansion interface circuit, optocoupler holding circuit and serial communication interface circuit.
Preferably; also comprise power-supplying circuit, described power-supplying circuit selects circuit, real time clock circuit, power supply main standby power detection circuit, memory circuitry, button inputting circuits, pilot lamp interface circuit, LCD interface circuit, audible alarm circuit, expansion interface circuit, optocoupler holding circuit, serial communication interface circuit to be connected with embedded microcontroller, crystal oscillating circuit, reset circuit, BOOT functional circuit, jtag interface circuit, allomeric function.
Preferably, described optocoupler holding circuit also is connected with RS485 telecommunication circuit, RS232 telecommunication circuit and CAN bus communication circuit.
Preferably, described RS485 telecommunication circuit is connected with the RS485 interface protective circuit, and described RS232 telecommunication circuit is connected with the RS232 interface protective circuit, and described CAN bus communication circuit is connected with the CAN interface circuit.
Preferably, described real time clock circuit also is connected with real-time clock power backup circuit.
Preferably, described serial communication interface circuit is connected with network transmission interface circuit, printer interface circuit and remote upgrade circuit.
The utility model has following advantage and effect with respect to prior art:
1, layout, wiring, the photoelectricity of taking all factors into consideration circuit board size, concrete components and parts isolate, electromagnetic compatibility, factor such as anti-interference has good reliability and the high characteristics of stability, realizes the reliable transmission in real time of fire information and reports to the police.
2, the bus access way of the compatible multiple fire alarm information of motherboard of the present utility model comprises RS232 bus, RS485 bus and CAN bus, has the high and strong advantage of extendability of dirigibility.
Description of drawings
Fig. 1 is that fire information transmission motherboard circuit principle structure connects block diagram;
Fig. 2 is the topological design block diagram of element circuit on the fire information transmission motherboard.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment
As shown in Figure 1, described fire information transmission motherboard comprises power-supplying circuit 27; embedded microcontroller 1; crystal oscillating circuit 2; reset circuit 3; BOOT functional circuit 4; jtag interface circuit 5; allomeric function is selected circuit 6; real time clock circuit 7; power supply main standby power detection circuit 8; real-time clock power backup circuit 9; memory circuitry 10; button inputting circuits 11; pilot lamp interface circuit 12; LCD interface circuit 13; audible alarm circuit 14; expansion interface circuit 15; optocoupler holding circuit 16; RS485 telecommunication circuit 17; RS232 telecommunication circuit 18; CAN bus communication circuit 19; serial communication interface circuit 23; RS485 interface protective circuit 20; RS232 interface protective circuit 21; CAN interface protective circuit 22; network transmission interface circuit 24; printer interface circuit 25; remote upgrade circuit 26.
Described motherboard is integrated in above-described all element circuits on the same motherboard; when design circuit, add holding circuit and buffer circuit; printed circuit board (PCB) adopts rational components and parts layout simultaneously; the wiring of standard; to reach electrostatic screening, anti-electromagnetic interference (EMI); purposes such as anti-surge make that simultaneously motherboard integral body is neat and artistic, and its stability is provided.
Described power-supplying circuit 27 respectively with embedded microcontroller 1; crystal oscillating circuit 2; reset circuit 3; BOOT functional circuit 4; jtag interface circuit 5; allomeric function is selected circuit 6; real time clock circuit 7; power supply main standby power detection circuit 8; real-time clock power backup circuit 9; memory circuitry 10; button inputting circuits 11; pilot lamp interface circuit 12; LCD interface circuit 13; audible alarm circuit 14; expansion interface circuit 15; optocoupler holding circuit 16; RS485 telecommunication circuit 17; RS232 telecommunication circuit 18; CAN bus communication circuit 19; serial communication interface circuit 23; RS485 interface protective circuit 20; RS232 interface protective circuit 21; CAN interface protective circuit 22; network transmission interface circuit 24; printer interface circuit 25; remote upgrade circuit 26 is connected.
Described embedded microcontroller 1 selects circuit 6, real time clock circuit 7, power supply main standby power detection circuit 8, memory circuitry 10, button inputting circuits 11, pilot lamp interface circuit 12, LCD interface circuit 13, audible alarm circuit 14, expansion interface circuit 15, optocoupler holding circuit 16, serial communication interface circuit 23 to be connected with crystal oscillating circuit 2, reset circuit 3, BOOT functional circuit 4, jtag interface circuit 5, allomeric function respectively.
Described RS485 telecommunication circuit 17 is connected with RS485 interface protective circuit 20 with optocoupler holding circuit 16 respectively; isolate and level conversion by the photoelectricity between optocoupler holding circuit realization RS485 telecommunication circuit 17 and the embedded microcontroller 1; by the interference of RS485 interface protective circuit elimination voltage transient and surge, protect motherboard to avoid damaging effectively.
Described RS232 telecommunication circuit 18 is connected with RS232 interface protective circuit 21 with optocoupler holding circuit 16 respectively; isolate and level conversion by the photoelectricity between optocoupler holding circuit realization RS232 telecommunication circuit 18 and the embedded microcontroller 1; by the interference of RS232 interface protective circuit elimination voltage transient and surge, protect motherboard to avoid damaging effectively.
Described CAN telecommunication circuit 19 is connected with CAN interface protective circuit 22 with optocoupler holding circuit 16 respectively; isolate and level conversion by the photoelectricity between optocoupler holding circuit 16 realization CAN telecommunication circuits 19 and the embedded microcontroller 1; eliminate the interference of voltage transient and surge, thunderbolt by the CAN interface protective circuit, protect motherboard to avoid damaging effectively.
Described network transmission interface circuit 24 links to each other with serial communication interface circuit 23, by external GPRS/GSM module, serial port networked server module or industrial modem, realizes GPRS, Ethernet, telephone wire mode remote transmission fire-fighting data.
Described printer interface circuit 25 links to each other with serial communication interface circuit 23, external minitype thermal printer.
Described real time clock circuit 7 links to each other with real-time clock power backup circuit 9 with embedded microcontroller 1 respectively.Adopt the 32.768kHz crystal oscillator that clock signal is provided, during the motherboard power down by the time clock power backup circuit adopt the button cell power supply, guarantee the real-time of clock.
Described memory circuitry 10 links to each other with embedded microcontroller 1, adopts I2C bus mode and micro-controller communications, is used for realizing the storage of web-privilege password Web and event information.
Described audible alarm circuit 14 links to each other with embedded microcontroller 1, and the circuit master chip adopts Music Clip, can realize four tones of standard Chinese pronunciation warning.
Described button inputting circuits 11 links to each other with embedded microcontroller 1, provides 10 input lines to insert, and can realize 6*4,5*5 equal matrix keyboard coding mode.
Described pilot lamp interface circuit 12 links to each other with embedded microcontroller 1, and the output of 20 road pilot lamp is provided.
Described liquid crystal display circuit 13 links to each other with embedded microcontroller 1, provides the SPI interface to link to each other with LCD.
Described allomeric function selects circuit 6 to link to each other with embedded microcontroller 1, can realize the switching of motherboard function by the mode of jumper cap short circuit.
Described reset circuit 3 links to each other with embedded microcontroller 1, can realize the hard reset of mainboard system by button.
Described power supply main standby power detection circuit 8 links to each other with embedded microcontroller 1, simultaneously outer welding system primary power and power backup power supply.
Described BOOT functional circuit 4 links to each other with embedded microcontroller 1.
Described jtag interface circuit 5 links to each other with embedded microcontroller 1, is used for debugging and the download of system program.
Described expansion interface circuit 15 links to each other with embedded microcontroller 1, is used for the motherboard function expansion.
For the stability that reaches electrostatic screening, anti-electromagnetic interference (EMI), raising motherboard, the purposes such as overall appearance that increase motherboard, the printed circuit board (PCB) of described motherboard adopts rational components and parts layout, the wiring of standard.Shown in Figure 2, be the topological design block diagram of element circuit on the fire information transmission motherboard.All element circuits all reasonably are distributed on the printed circuit board (PCB) 29 of described motherboard.Wherein embedded microprocessor 1 is positioned at printed circuit board (PCB) 29 left side central authorities, and the left side of embedded microprocessor 1 is respectively from top to bottom: allomeric function is selected circuit 6, reset circuit 3, BOOT functional circuit 4, jtag interface circuit 5; The right is crystal oscillating circuit 2, real time clock circuit 7 from top to bottom; Being expansion interface circuit 15 above, is memory circuitry 10 below.The right of expansion interface circuit 15 is respectively liquid crystal display circuit 13, button inputting circuits 11, network transmission interface circuit 24, remote upgrade circuit 26, printer interface circuit 25.Be respectively optocoupler holding circuit 16, pilot lamp interface circuit 12 below the button inputting circuits 11.Pilot lamp interface circuit 12 left sides are followed successively by audible alarm circuit 14, real-time clock power backup circuit 9.Be followed successively by serial communication interface circuit 23, RS484 telecommunication circuit 17, RS232 telecommunication circuit 18, CAN bus communication circuit 19 below the network transmission interface circuit 24.Be RS485 interface protective circuit 20, RS232 interface protective circuit 21, CAN interface protective circuit 22, power supply main standby power detection circuit 8, power-supplying circuit 27 successively below the remote upgrade circuit 26.The size of printed circuit board (PCB) 29 is 15cm*10cm, and respectively there is a screw pilot hole 28 at its four drift angle places.
Described network transmission interface circuit 24 provides serial communication interface to link to each other with network transmission module, and interface type is RS232.
Described motherboard provides the automatic alarm controller of the fire alarm of RS232 bus, RS485 bus and CAN bus protocol to insert; its transmission line is exposed to the open air usually; therefore very easily introduce superpotential because of reasons such as thunderbolts, so motherboard must be considered surge, lightning protection.
Described RS232 telecommunication circuit 18 is used for gathering the automatic fire alarm information based on the RS232 bus protocol, is connected with microcontroller by optocoupler holding circuit 16 and realizes the photoelectricity isolation; Eliminate the impact of surge by in RS232 interface protective circuit 21, adding TVS transient voltage suppressor holding circuit.
Optocoupler comprises that the effect of circuit is photoelectricity isolation and the level conversion that realizes between microprocessor and the input signal, optocoupler is connected with microprocessor by pull-up resistor, the selection of pull-up resistor is very important, the numerical value of selecting is unreasonable might to influence whole system operation, thereby causes the phenomenon of loss of data and error in data.Therefore need take all factors into consideration the current transfer ratio of optocoupler, saturation conduction voltage, the factors such as speed of transmission signal; The adding of optical coupling isolation circuit can suppress the input signal noise effectively, eliminates the interference of ground loop, guarantees effectively stable collection of fire alarm information, guarantees the accuracy of data.
Described RS485 telecommunication circuit 17 is used for gathering the automatic fire alarm information based on the RS485 bus protocol, is connected with microcontroller by optocoupler holding circuit 16 and realizes the photoelectricity isolation; Eliminate the impact of surge by in RS485 interface protective circuit 20, adding TVS transient voltage suppressor holding circuit; The adding of optocoupler holding circuit can suppress the input signal noise effectively, eliminates the interference of ground loop, guarantees effectively stable collection of fire alarm information, guarantees the accuracy of data.
Described CAN bus communication circuit 19 is used for gathering the automatic fire alarm information based on the CAN bus protocol, is connected with microcontroller by optocoupler holding circuit 16 and realizes the photoelectricity isolation; By in CAN interface protective circuit 22, adding the impact of TVS transient voltage suppressor, discharge tube multi-stage protection circuit for eliminating surge.In order to eliminate owing to cause the distortion of signal because impedance is discontinuous with the signal reflex that causes of not matching in the CAN bus transfer process, the CAN terminal resistance has used the division terminal, be the resistance that two terminal resistances of bus end node all are divided into two equivalences, replace a resistance with two resistance, can effectively reduce the signal radiation like this.
Above-described embodiment is the utility model preferred implementation; but embodiment of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under spiritual essence of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection domain of the present utility model.
Claims (6)
1. a fire information transmits motherboard; it is characterized in that; comprise embedded microcontroller, the crystal oscillating circuit that is connected with embedded microcontroller, reset circuit, BOOT functional circuit, jtag interface circuit, allomeric function are selected circuit, real time clock circuit, power supply main standby power detection circuit, memory circuitry, button inputting circuits, pilot lamp interface circuit, LCD interface circuit, audible alarm circuit, expansion interface circuit, optocoupler holding circuit and serial communication interface circuit.
2. fire information according to claim 1 transmits motherboard; it is characterized in that; also comprise power-supplying circuit, described power-supplying circuit selects circuit, real time clock circuit, power supply main standby power detection circuit, memory circuitry, button inputting circuits, pilot lamp interface circuit, LCD interface circuit, audible alarm circuit, expansion interface circuit, optocoupler holding circuit to be connected with serial communication interface circuit with embedded microcontroller, crystal oscillating circuit, reset circuit, BOOT functional circuit, jtag interface circuit, allomeric function.
3. fire information transmission motherboard according to claim 1 is characterized in that described optocoupler holding circuit also is connected with RS485 telecommunication circuit, RS232 telecommunication circuit and CAN bus communication circuit.
4. fire information according to claim 3 transmits motherboard; it is characterized in that; described RS485 telecommunication circuit is connected with the RS485 interface protective circuit, and described RS232 telecommunication circuit is connected with the RS232 interface protective circuit, and described CAN bus communication circuit is connected with the CAN interface circuit.
5. fire information transmission motherboard according to claim 1 is characterized in that described real time clock circuit also is connected with real-time clock power backup circuit.
6. fire information transmission motherboard according to claim 1 is characterized in that described serial communication interface circuit is connected with network transmission interface circuit, printer interface circuit and remote upgrade circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320158766 CN203178732U (en) | 2013-04-01 | 2013-04-01 | Fire control information transmission motherboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320158766 CN203178732U (en) | 2013-04-01 | 2013-04-01 | Fire control information transmission motherboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203178732U true CN203178732U (en) | 2013-09-04 |
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ID=49075407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320158766 Expired - Fee Related CN203178732U (en) | 2013-04-01 | 2013-04-01 | Fire control information transmission motherboard |
Country Status (1)
| Country | Link |
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| CN (1) | CN203178732U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676743A (en) * | 2016-03-17 | 2016-06-15 | 苏州太阳都信息科技有限公司 | Control circuit of fire-fighting information transmission system |
| CN109076003A (en) * | 2016-05-02 | 2018-12-21 | 索尤若驱动有限及两合公司 | Method and bus system for bus system initialization |
| CN111830878A (en) * | 2020-07-27 | 2020-10-27 | 山东众海智能科技有限公司 | Portable fire control bus equipment on-line testing device and system |
-
2013
- 2013-04-01 CN CN 201320158766 patent/CN203178732U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676743A (en) * | 2016-03-17 | 2016-06-15 | 苏州太阳都信息科技有限公司 | Control circuit of fire-fighting information transmission system |
| CN109076003A (en) * | 2016-05-02 | 2018-12-21 | 索尤若驱动有限及两合公司 | Method and bus system for bus system initialization |
| CN109076003B (en) * | 2016-05-02 | 2021-01-26 | 索尤若驱动有限及两合公司 | Method for initializing a bus system and bus system |
| CN111830878A (en) * | 2020-07-27 | 2020-10-27 | 山东众海智能科技有限公司 | Portable fire control bus equipment on-line testing device and system |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20160401 |