CN101819710B - Two-way serial communication protocol based communication method for fire alarm system - Google Patents
Two-way serial communication protocol based communication method for fire alarm system Download PDFInfo
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- CN101819710B CN101819710B CN2010101359206A CN201010135920A CN101819710B CN 101819710 B CN101819710 B CN 101819710B CN 2010101359206 A CN2010101359206 A CN 2010101359206A CN 201010135920 A CN201010135920 A CN 201010135920A CN 101819710 B CN101819710 B CN 101819710B
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Abstract
The invention discloses a two-way serial communication protocol based communication method for a fire alarm system, wherein the fire alarm system comprises a controller, a plurality of loop cards connected with the controller in a matched way or a communication circuit connected with the controller, and a plurality of fire communication terminals; and the communication frames of the transceiving information between the controller and the fire communication terminals comprise loopback information comprising 1 type-bit datum, 8 address-bit data, a plurality of control-bit data, 1 odd/even checkbit datum from the fornt to back and a plurality of PW pulses and a synchronizing signal. The communication method comprises following steps of information sending, information transfer, information receiving, analyzing and judging and information replay. The invention has novel and reasonable design, good use effect and high intellectualization degree and can simply, conveniently, timely and accurately transfer the information to the fire communication terminals, thereby realizing the real-time two-way communication between the controller and the control terminals of the fire alarm system and having quick communication speed and accurate data transmission.
Description
Technical field
The invention belongs to fire protection alarm system two-way communication technical field, especially relate to a kind of fire protection alarm system communication means based on serial communication protocol.
Background technology
At present, each producer realizes that each inter-module information problem of transmission of fire protection alarm system mainly realizes by binary-coded mode, specifically be to judge 0,1 information, and transmit different information by carrying out different coding to 0,1 by the mode of circuit differentiation high-low level.Though above-mentioned traditional approach can solve the information problem of transmission, but there are problems such as the information transmission is slow, bit error rate height, and because fire protection alarm system is a kind of special real-time working system, it requires the system time can both steady operation and reliably corresponding informance is transmitted processing rapidly, otherwise as fire alarm or control information in time can not be prepared send to corresponding department and then can cause serious consequence.
Summary of the invention
Technical matters to be solved by this invention is at above-mentioned deficiency of the prior art, a kind of fire protection alarm system communication means based on serial communication protocol is provided, its modern design, reasonable and good, the intelligent degree height of result of use, can be easy, in time and exactly information is sent to a plurality of fire communication terminals, the controller of having realized fire protection alarm system is communicated by letter with the real time bidirectional of a plurality of control terminals and communication speed is fast, it is accurate to transmit data.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of fire protection alarm system communication means based on serial communication protocol, its fire protection alarm system comprise controller, with matched a plurality of loops card of controller or communicating circuit and a plurality of fire communication terminal of joining with controller, a plurality of described fire communication terminals are carried out two-way communication by a plurality of described loop cards or described communicating circuit and controller respectively, and described loop card or described communicating circuit all are connected by connection with described fire communication terminal room; A plurality of described fire communication terminals comprise a plurality of detectors and a plurality of output control module, one of corresponding with a plurality of described fire communication terminals respectively and all corresponding composition with each loop card of each fire communication terminal of a plurality of described loops card is supporting to carry out the circuit units of information transmit-receive with controller, it is characterized in that: the communication frame that described controller and a plurality of described fire communication terminal room are received and sent messages is from front to back successively by the type bit data of 1 bit representation fire communication terminal type, 8 address size certificates, a plurality of control bit data, 1 strange/even parity bit data, the loopback information that a plurality of PW pulses are formed and a synchronizing signal are formed, and described 8 address sizes are according to comprising 4 address size certificate and 4 address size certificates of representing the decimal address low level of representing a decimal address high position; Every frame information that described controller and a plurality of described fire communication terminal room are received and dispatched is corresponding to be formed by clock signal, data-signal and three types of signals of synchronizing signal, wherein said synchronizing signal is represented the beginning or the end of a communication frame, and the type of described type bit data representation fire communication terminal is detector or output control module;
When described controller and a plurality of described fire communication terminal room carried out two-way communication, its communication means may further comprise the steps:
301, as described fire communication terminal X
iAfter determining a synchronizing signal, illustrate that be the beginning of a communication frame this moment, at this moment described fire communication terminal X
iThe communication register that its inside connected is carried out initialization and prepares to receive the 1st bit data;
302, the 1st bit data receives and analysis and judgement: described fire communication terminal X
iAfter receiving the 1st bit data and being the type bit data, the type bit data that received are carried out analysis and judgement: when judgement draws the type bit data that received when consistent with self type, then this moment fire communication terminal X
iContinue to receive the data of present frame information back, promptly enter step 303; Otherwise, described fire communication terminal X
iWithdraw from the Data Receiving of present frame information, and turn back to the state that receives the synchronizing signal that the next frame information represent present frame begins, promptly enter step 301;
303, the 2-9 bit data receives and analysis and judgement: described fire communication terminal X
iThe 2-9 bit data of present frame information back is the address size certificate described in the receiving step 302 continuously, and deposits the 2-9 bit data that is received in fire communication terminal X successively
iIn the inner communication register that is connected; And after the 2-9 bit data is all received, the 2-9 bit data that is received is carried out analysis and judgement: when judgement draws the 2-9 bit data that is received when consistent with the address bit of self, then this moment fire communication terminal X
iContinue to receive the data of present frame information back, promptly enter step 304; Otherwise, described fire communication terminal X
iWithdraw from the Data Receiving of present frame information, and turn back to the state of the synchronizing signal that the next frame information that receives the described present frame of representative begins, promptly enter step 301;
304, a plurality of control bit Data Receiving and action: described fire communication terminal X
iContinuously in the present frame information described in the receiving step 303 address size according to a plurality of control bit data of back, and the data splitting of a plurality of control bit data of being received carried out analysis and judgement, and carry out corresponding actions according to the steering order of described data splitting representative;
305, strange/even parity bit Data Receiving: described fire communication terminal X
iStrange/even parity bit data of a plurality of control bit data back in the present frame information described in the continuation receiving step 304, and all data that received in the step 302,303 and 304 are carried out very/even parity check according to the strange/even parity bit data that received: when very/when even parity check is correct, described fire communication terminal X
iBegin to return sign indicating number, promptly enter step 306 to controller; Otherwise, described fire communication terminal X
iTurn back to the state that receives the synchronizing signal that the next frame information represent present frame begins, promptly enter step 301;
306, information-reply: described fire communication terminal X
iIts specific product kind, concrete duty and the analog quantity numerical value of gathering should be back to controller by described loop card or communicating circuit by a plurality of PW pulsion phases; Described controller is corresponding to be read successively from described fire communication terminal X
iThe PW value of a plurality of PW pulses of transmitting and coming, and the PW value of comprehensive a plurality of described PW pulses are to described fire communication terminal X
iThe work at present state judge;
307, after information-reply finishes, described fire communication terminal X
iReceive the synchronizing signal of the next frame information of present frame described in the step 302,303,304 and 305, then return step 301;
Described detector comprises sniffer, LED indicating member one with remote testing function, respectively the remote testing state of described sniffer and the duty of LED indicating member one is controlled the processing unit of adjustment and the communication register that joins with described processing unit, and described processing unit joins with sniffer and LED indicating member one respectively; Described processing unit and described communicating circuit join;
Communication register that described output control module comprises o controller, LED indicating member two, join with described o controller and the processor of respectively described o controller and LED indicating member two being controlled two, described o controller and LED indicating member two all join with processor two;
The quantity of a plurality of described control bit data is that 3 and 3 control bit data are respectively CB1, CB2 and CB3, described strange/the even parity bit data should be the even parity bit data mutually; Wherein the data splitting of control bit data CB1 and CB3 is represented the steering order to LED indicating member one or LED indicating member two: when CB1=CB3=1, the duty of LED indicating member one or LED indicating member two is flicker; When CB1=0, the duty of LED indicating member one or LED indicating member two is Chang Liang; When CB1=1 and CB3=0, the duty of LED indicating member one or LED indicating member two is for often going out;
As the terminal of fire communication described in step 3 X
iDuring for detector, control bit data CB2 represents whether to reply the steering order of the specific product kind of information of described detector: when CB2=1, detector described in the step 306 is not replied its specific product kind of information to controller, and promptly the PW value of the representative detector specific product kind of information of being replied this moment is 0; When CB2=0, detector described in the step 306 is replied its specific product kind of information to controller; Control bit data CB3 represents to control the steering order whether described sniffer enters the remote testing state, and when the CB1=CB3=1 in the two continuous frames information that described detector receives, described detector withdraws from the remote testing state; When the CB1=CB3=0 in the two continuous frames information that described detector receives, described detector enters the remote testing state; Correspondingly, when the processing unit of detector described in the step 304 receives 3 control bit data, data splitting to 3 control bit data of receive carries out analysis and judgement, and carries out corresponding actions according to the steering order control sniffer and the LED indicating member one of described data splitting representative;
As the terminal of fire communication described in step 3 X
iDuring for output control module, whether control bit data CB1 represents the steering order that the lock-out state to described output control module output monitoring resets, and when CB1=0, the output monitoring lock-out state of described output control module is reset; Control bit data CB2 represents whether to reply the steering order of the specific product kind of information of described output control module: when CB2=1, output control module described in the step 306 is not replied its specific product kind of information to controller, and promptly the PW value of the representative output control module specific product kind of information of being replied this moment is 0; When CB2=0, output control module described in the step 306 is replied its specific product kind of information to controller, and this moment described output control module its communication register of processor dual-purpose in institute's output control command of receiving and preserving upgrade the output order of current described o controller; Control bit data CB3 represents whether whether the described output control module of control break preserves the current steering order that receives the output control command by communication register, when the CB1=CB3=1 in the two continuous frames information that described output control module receives, controller is controlled described output control module preservation and is received the state of output control command this moment for disconnecting; When the CB1=CB3=0 in the two continuous frames information that described output control module receives, controller is controlled described output control module preservation and is received the state of output control command this moment for closed; Correspondingly, when the processor two of output control module described in the step 304 receives 3 control bit data, data splitting to 3 control bit data of receive carries out analysis and judgement, and carries out corresponding actions according to the steering order control o controller and the LED indicating member two of described data splitting representative.
The quantity of a plurality of described PW pulses is that 5 and 5 PW pulses are respectively PW1, PW2, PW3, PW4 and PW5, and wherein PW1 is with reference to pulsewidth;
As the terminal of fire communication described in step 3 X
iDuring for detector, PW2 represents the remote testing state of switch state of described sniffer in the step 306: when doubly PW1 pulsewidth of PW2=1, the remote testing state of representing described sniffer is for closing; When doubly PW1 pulsewidth of PW2=2, the remote testing state of representing described sniffer is for opening; PW3 represents the ID sign indicating number by the described sniffer of representative of OEM producer distribution; PW4 represents the real-time sampling value of described sniffer; PW5 represents the specific product kind of described sniffer;
As the terminal of fire communication described in step 3 X
iDuring for output control module, PW2 represents that described output control module preserves the current on off state that receives the output control command in the step 306: when doubly PW1 pulsewidth of PW2=1, represent described output control module preservation current receive export control command state for closing; When doubly PW1 pulsewidth of PW2=2, represent described output control module preserve current receive export control command state for opening; PW3 represents the instant output monitoring state of described output control module: when doubly PW1 pulsewidth of PW3=1, the instant output monitoring state of representing described output control module is for normal; When doubly PW1 pulsewidth of PW3=2, represent that the instant output monitoring state of described output control module is open circuit; When doubly PW1 pulsewidth of PW3=3, represent that the instant output monitoring state of described output control module is short circuit; PW4 represents the instant simulation monitoring value of described output control module; PW5 represents the specific product kind of described output control module.
The specific product kind of described sniffer comprises heat detector, ion detector and photodetector; During doubly PW1 pulsewidth of the PW5=1 described in the step 306, the specific product kind of representing described sniffer is a heat detector; During doubly PW1 pulsewidth of PW5=2, the specific product kind of representing described sniffer is an ion detector; During doubly PW1 pulsewidth of PW5=3, the specific product kind of representing described sniffer is a photodetector.
A plurality of described fire communication terminals also comprise a plurality of monitor modules that described sniffer is monitored; The data of type bit described in the step 302 are logical one or logical zero, and it is detector that type bit data=logical one is represented described fire communication terminal, and it is output control module or monitor module that type bit data=logical zero is represented described fire communication terminal.
Communication register that described monitor module comprises supervisory controller, LED indicating member three, join with described supervisory controller and the processor of respectively described supervisory controller and LED indicating member three being controlled three, described supervisory controller and LED indicating member three all join with processor three;
As the terminal of fire communication described in step 3 X
iDuring for monitor module, the data splitting of data CB1 of control bit described in the step 304 and CB3 is represented the steering order to LED indicating member three: when CB1=CB3=1, the duty of LED indicating member three is flicker; When CB1=0, the duty of LED indicating member three is Chang Liang; When CB1=1 and CB3=0, the duty of LED indicating member three is for often going out; Whether control bit data CB1 represents the steering order that the lock-out state to described monitor module input monitoring resets, and when CB1=0, the input monitoring lock-out state of described monitor module is reset; Control bit data CB2 represents whether to reply the steering order of the specific product kind of information of described monitor module: when CB2=1, monitor module described in the step 306 is not replied its specific product kind of information to controller, and promptly the PW value of the representative monitor module specific product kind of information of being replied this moment is 0; When CB2=0, monitor module described in the step 306 is replied its specific product kind of information to controller; Control bit data CB3 represents whether control the steering order of switching the described monitor module Class A or the Class B mode of connection, when the CB1=CB3=1 in the two continuous frames information that described monitor module receives, controller is controlled the described monitor module cancellation Class A or the Class B mode of connection; When the CB1=CB3=0 in the two continuous frames information that described monitor module receives, controller is controlled described monitor module and is switched to the Class A or the Class B mode of connection;
Correspondingly, PW2 represents the switching state of the described monitor module Class A or the Class B mode of connection in the step 306: when doubly PW1 pulsewidth of PW2=1, represent that the Class A of described monitor module or the Class B mode of connection are for normal; When doubly PW1 pulsewidth of PW2=2, represent that the Class A of described monitor module or the Class B mode of connection are for closing; PW3 represents the input monitoring state of the instant locking of described monitor module, the input monitoring state of described monitor module is according to by normally, the priority of short circuit of opening a way locks from low to high, if instant input monitoring priority of status is higher than the input monitoring state of locking, then Suo Ding input monitoring state is updated to instant input monitoring state, otherwise, if instant input monitoring priority of status is less than or equal to the input monitoring state of locking, then Suo Ding input monitoring state does not change, when doubly PW1 pulsewidth of PW3=1, the input monitoring state of representing the instant locking of described monitor module is for normal; When doubly PW1 pulsewidth of PW3=2, represent that the input monitoring state of the instant locking of described monitor module is open circuit; When doubly PW1 pulsewidth of PW3=3, represent that the input monitoring state of the instant locking of described monitor module is short circuit or warning; PW4 represents the instant simulation monitoring value of described monitor module; PW5 represents the specific product kind of described monitor module.
Described clock signal and described data-signal square-wave signal for separating from the communication waveform of each frame information, the data low level of described data-signal and a data high position all are in the low level of clock signal, and described synchronizing signal is the clock signal high level that is no less than 3mS the duration.
Described communicating circuit comprises respectively communication input circuit and the communication output circuit that joins with processing unit;
Described communication input circuit comprises triode Q6 and Q17 and operational amplifier IC2A and IC2B, and the emitter of triode Q17 and described processing unit join; The output terminal of operational amplifier IC2B divides two-way after resistance R 28, the one tunnel joins with described processing unit, and the collector of another road and triode Q6 joins, the grounded emitter of triode Q6; The base stage of triode Q6 is ground connection after resistance R 18, the output terminal of operational amplifier IC2A joins with the base stage of triode Q6 after capacitor C 14 and resistance R 30 and its normal phase input end joins with the output terminal of operational amplifier IC2B behind diode D8, the normal phase input end of operational amplifier IC2A joins with the output terminal of operational amplifier IC2A after capacitor C 5, the power supply input pin of operational amplifier IC2A and IC2B all joins with power end and described power end ground connection after capacitor C 3, the normal phase input end of operational amplifier IC2A connects described power end after resistance R 48, the inverting input of operational amplifier IC2B connects described power end through the inverting input of ground connection after the resistance R 1 and operational amplifier IC2B after resistance R 29, the inverting input of operational amplifier IC2A and IC2B joins and all connects capacitor C 8 back ground connection; The normal phase input end of operational amplifier IC2B divides three the tunnel, one the tunnel after resistance R 3 ground connection, another road is the positive output end of described communicating circuit after resistance R 43 through ground connection and Third Road after the capacitor C 17, the base stage of described triode Q17 is joined with the positive output end of described communicating circuit after resistance R 35, and the collector of triode Q17 and described power end join; The inter-collector of the emitter of described triode Q17 and triode Q6 is serially connected with on R50 and the described resistance R 50 and is connected to capacitor C 18;
Described communication output circuit comprises triode Q1 and Q2, the collector of described triode Q2 joins with described processing unit after resistance R 4, and the collector of triode Q2 divide three the tunnel, the one tunnel after capacitor C 8 ground connection, another road is through resistance R 16 ground connection, and the base stage of Third Road and triode Q1 is joined; The collector of described triode Q1 and the positive output end of described communicating circuit join, the grounded emitter of triode Q2 and its base stage ground connection after capacitor C 15, the emitter of triode Q1 is through joining and its emitter ground connection after resistance R 6 with the base stage of triode Q2 after the resistance R 5;
The negative output terminal ground connection of described communicating circuit.
Described communicating circuit comprises the power circuit that draws decoding circuit, clock circuit, data circuit and join with described processing unit;
Described power circuit comprises mu balanced circuit, capacitor C 4 and diode D1, the VDD pin of described processing unit 1 divides three the tunnel, one the tunnel connects the VDD power end, and another road is ground connection after capacitor C 4, and Third Road joins with the positive output end of described communicating circuit behind mu balanced circuit and diode D1;
Described clock circuit comprises triode Q3, diode D3 and stabilivolt Z3, the pin of described processing unit is once resistance R 10 backs and the VDD power end joins and the collector of pin of described processing unit one and triode Q3 joins, and the grounded emitter of triode Q3 and its base stage connect the positive output end of described communicating circuit behind resistance R 8 and stabilivolt Z3; The base stage of triode Q3 ground connection and described resistance R 9 after resistance R 9 is anti-and be connected to diode D3;
Described data circuit comprises triode Q4, diode D4 and resistance R 11, R12 and R13, the pin two of described processing unit 1 joins with the VDD power end after resistance R 13 and the collector of the pin two of processing unit 1 and triode Q4 joins, the grounded emitter of triode Q4 and its base stage through resistance R 11 after and the positive output end of described communicating circuit join; The base stage of triode Q4 ground connection and described resistance R 12 after resistance R 12 is anti-and be connected to diode D4;
The described decoding circuit that draws comprises triode Q102, compound transistor Q101, diode D102, capacitor C 105 and C106 and resistance R 105, R106 and R107; The pin three of described processing unit 1 is through branch three tunnel, tunnel ground connection after capacitor C 105 after the resistance R 105, and the collector of another road and triode Q102 joins, and the base stage of Third Road and compound transistor Q101 is joined; The grounded emitter of triode Q102 and its base stage are through capacitor C 106 ground connection, the base stage of triode Q102 is joined with the emitter of compound transistor Q101 after resistance R 106, and the emitter of compound transistor Q101 joins with the positive output end of described communicating circuit behind diode D102 through ground connection after the resistance R 107 and its collector;
The negative output terminal ground connection of described communicating circuit.
The present invention compared with prior art has the following advantages:
1, novel in design and use easy and simple to handle, intelligent degree height.
2, result of use is good and practical value is high, the method of this patent is by carrying out carrier wave on the certain frequency signal, the method of analog and digital signal transmission is combined, can carry out rapidly effective signal transmission and keep very high success ratio, and communication capacity is very strong, can be simple and convenient and timely and accurately information is sent to a plurality of fire communication terminals, the controller of having realized fire protection alarm system communicate by letter with the real time bidirectional of a plurality of control terminals and communication speed fast, the transmission data are accurate, effectively overcome conventional fire warning system information and transmitted existing shortcoming.
3, reasonable in design, the communications protocol that is adopted is the serial communication protocol between controller and the product (being the fire communication terminal).Controller and a plurality of product are connected in parallel on the communication bus.Controller sends a series of pulses on connection, after product receives the information that conforms to, return relevant information and give controller on communication bus.Controller is broadcast transmission one frame data on bus, and the product that conforms to of frame address data returns relevant information and gives controller on bus therewith, and other products is monitored the next frame data.The product power supply is from connection.Each product contains unique address.Controller Frame of each product of broadcast (sites) in turn in turn on communication bus, then according to the data that receive product, the state of analytic product allows some performance element product action.
In sum, modern design of the present invention, rationally and use easy and simple to handle, result of use good, intelligent degree height, can be simple and convenient and timely and accurately information is sent to a plurality of fire communication terminals, the controller of having realized fire protection alarm system is communicated by letter with the real time bidirectional of a plurality of control terminals and communication speed is fast, the transmission data are accurate, has effectively overcome conventional fire warning system information and has transmitted existing shortcoming.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Description of drawings
Fig. 1 is the communication means process flow diagram of first kind of embodiment of the present invention.
The structural representation of used communication frame when Fig. 2 communicates by letter for the present invention.
Fig. 3 is the circuit theory diagrams of communicating circuit in first kind of embodiment of the present invention.
Fig. 4 is the circuit theory diagrams of communicating circuit in second kind of embodiment of the present invention.
Description of reference numerals:
The 1-processing unit; 2-communication input circuit; 3-communication output circuit;
The 4-power circuit; 5-draws decoding circuit; The 6-clock circuit;
The 7-data circuit; The 8-mu balanced circuit.
Embodiment
As shown in Figure 1 and Figure 2, the fire protection alarm system that is suitable among the present invention comprise controller, with matched a plurality of loops card of controller or communicating circuit and a plurality of fire communication terminal of joining with controller.A plurality of described fire communication terminals are carried out two-way communication by a plurality of described loop cards or described communicating circuit and controller respectively, and described loop card or described communicating circuit all are connected by connection with described fire communication terminal room.A plurality of described fire communication terminals comprise a plurality of detectors and a plurality of output control module (be specially with alarm host machine be that controller, fire characteristic or fire early sign sensor are the output control equipment that detector and panalarm are used, specifically be the output control equipment of in fire protection alarm system, concrete fire-fighting actuating equipment being controlled), one of corresponding with a plurality of described fire communication terminals respectively and all corresponding composition with each loop card of each fire communication terminal of a plurality of described loops card is supporting to carry out the circuit units of information transmit-receive with controller.Among the present invention, loopback information and a synchronizing signal that the communication frame that described controller and a plurality of described fire communication terminal room are received and sent messages is made up of the type bit data of 1 bit representation fire communication terminal type, 8 address size certificates, a plurality of control bit data, 1 strange/even parity bit data, a plurality of PW pulse are from front to back successively formed, and described 8 address sizes certificate comprises 4 address size certificate and 4 address size certificates of representing the decimal address low level of representing a decimal address high position.Every frame information that described controller and a plurality of described fire communication terminal room are received and dispatched is corresponding to be formed by clock signal, data-signal and three types of signals of synchronizing signal, wherein said synchronizing signal is represented the beginning or the end of a communication frame, and the type of described type bit data representation fire communication terminal is detector or output control module.
When described controller and a plurality of described fire communication terminal room carried out two-way communication, its communication means may further comprise the steps:
Corresponding relation between table 1 decimal address value and binary value
| The decimal address value | Binary value |
| 0 | 0000 |
| 1 | 0100 |
| 2 | 0110 |
| 3 | 0111 |
| 4 | 1000 |
| 5 | 0001 |
| 6 | 0101 |
| 7 | 0010 |
| 8 | 0011 |
| 9 | 1001 |
And the binary value in the communication process outside the table 1 is ignored by circuit units.
301, as described fire communication terminal X
iAfter determining a synchronizing signal, illustrate that be the beginning of a communication frame this moment, at this moment described fire communication terminal X
iThe communication register that its inside connected is carried out initialization and prepares to receive the 1st bit data;
302, the 1st bit data receives and analysis and judgement: described fire communication terminal X
iAfter receiving the 1st bit data and being the type bit data, the type bit data that received are carried out analysis and judgement: when judgement draws the type bit data that received when consistent with self type, then this moment fire communication terminal X
iContinue to receive the data of present frame information back, promptly enter step 303; Otherwise, described fire communication terminal X
iWithdraw from the Data Receiving of present frame information, and turn back to the state that receives the synchronizing signal that the next frame information represent present frame begins, promptly enter step 301;
303, the 2-9 bit data receives and analysis and judgement: described fire communication terminal X
iThe 2-9 bit data of present frame information back is the address size certificate described in the receiving step 302 continuously, and deposits the 2-9 bit data that is received in fire communication terminal X successively
iIn the inner communication register that is connected; And after the 2-9 bit data is all received, the 2-9 bit data that is received is carried out analysis and judgement: when judgement draws the 2-9 bit data that is received when consistent with the address bit of self, then this moment fire communication terminal X
iContinue to receive the data of present frame information back, promptly enter step 304; Otherwise, described fire communication terminal X
iWithdraw from the Data Receiving of present frame information, and turn back to the state of the synchronizing signal that the next frame information that receives the described present frame of representative begins, promptly enter step 301; (wherein in the 2-9 bit data that is received, preceding 4 for being an address high position, and back 4 is the address low level)
304, a plurality of control bit Data Receiving and action: described fire communication terminal X
iContinuously in the present frame information described in the receiving step 303 address size according to a plurality of control bit data of back, and the data splitting of a plurality of control bit data of being received carried out analysis and judgement, and carry out corresponding actions according to the steering order of described data splitting representative;
305, strange/even parity bit Data Receiving and verification: described fire communication terminal X
iStrange/even parity bit data of a plurality of control bit data back in the present frame information described in the continuation receiving step 304, and all data that received in the step 302,303 and 304 are carried out very/even parity check according to the strange/even parity bit data that received: when very/when even parity check is correct, described fire communication terminal X
iBegin to return sign indicating number, promptly enter step 306 to controller; Otherwise, described fire communication terminal X
iTurn back to the state that receives the synchronizing signal that the next frame information represent present frame begins, promptly enter step 301;
306, information-reply: described fire communication terminal X
iIts specific product kind, concrete duty and the analog quantity numerical value of gathering should be back to controller by described loop card or communicating circuit by a plurality of PW pulsion phases; Described controller is corresponding to be read successively from described fire communication terminal X
iThe PW value of a plurality of PW pulses of transmitting and coming, and the PW value of comprehensive a plurality of described PW pulses are to described fire communication terminal X
iThe work at present state judge;
307, after information-reply finishes, described fire communication terminal X
iReceive the synchronizing signal of the next frame information of present frame described in the step 302,303,304 and 305, then return step 301;
In the present embodiment, described detector comprises that the sniffer with remote testing function is (under the remote testing state, analog quantity that is higher than alarming value of sniffer output), LED indicating member one, respectively the remote testing state of described sniffer and the duty of LED indicating member one are controlled the processing unit 1 of adjustment and the communication register that joins with described processing unit 1, described processing unit 1 joins with sniffer and LED indicating member one respectively.Described processing unit 1 joins with described communicating circuit.
Communication register that described output control module comprises o controller, LED indicating member two, join with described o controller and the processor of respectively described o controller and LED indicating member two being controlled two, described o controller and LED indicating member two all join with processor two;
The quantity of a plurality of described control bit data is that 3 and 3 control bit data are respectively CB1, CB2 and CB3, described strange/the even parity bit data should be the even parity bit data mutually; Wherein the data splitting of control bit data CB1 and CB3 is represented the steering order to LED indicating member one or LED indicating member two: when CB1=CB3=1, the duty of LED indicating member one or LED indicating member two is flicker; When CB1=0, the duty of LED indicating member one or LED indicating member two is Chang Liang; When CB1=1 and CB3=0, the duty of LED indicating member one or LED indicating member two is for often going out.
As the terminal of fire communication described in step 3 X
iDuring for detector, control bit data CB2 represents whether to reply the steering order of the specific product kind of information of described detector: when CB2=1, detector described in the step 306 is not replied its specific product kind of information to controller, and promptly the PW value of the representative detector specific product kind of information of being replied this moment is 0; When CB2=0, detector described in the step 306 is replied its specific product kind of information to controller.Control bit data CB3 represents to control the steering order whether described sniffer enters the remote testing state, and when the CB1=CB3=1 in the two continuous frames information that described detector receives, described detector withdraws from the remote testing state; When the CB1=CB3=0 in the two continuous frames information that described detector receives, described detector enters the remote testing state; Correspondingly, when the processing unit 1 of detector described in the step 304 receives 3 control bit data, data splitting to 3 control bit data of receive carries out analysis and judgement, and carries out corresponding actions according to the steering order control sniffer and the LED indicating member one of described data splitting representative.
As the terminal of fire communication described in step 3 X
iDuring for output control module, whether control bit data CB1 represents the steering order that the lock-out state to described output control module output monitoring resets, and when CB1=0, the output monitoring lock-out state of described output control module is reset.Control bit data CB2 represents whether to reply the steering order of the specific product kind of information of described output control module: when CB2=1, output control module described in the step 306 is not replied its specific product kind of information to controller, and promptly the PW value of the representative output control module specific product kind of information of being replied this moment is 0; When CB2=0, output control module described in the step 306 is replied its specific product kind of information to controller, and this moment described output control module its communication register of processor dual-purpose in institute's output control command of receiving and preserving upgrade the output order of current described o controller.Control bit data CB3 represents whether whether the described output control module of control break preserves the current steering order that receives the output control command by communication register, when the CB1=CB3=1 in the two continuous frames information that described output control module receives, controller is controlled described output control module preservation and is received the state of output control command this moment for disconnecting; When the CB1=CB3=0 in the two continuous frames information that described output control module receives, controller is controlled described output control module preservation and is received the state of output control command this moment for closed.Correspondingly, when the processor two of output control module described in the step 304 receives 3 control bit data, data splitting to 3 control bit data of receive carries out analysis and judgement, and carries out corresponding actions according to the steering order control o controller and the LED indicating member two of described data splitting representative.
The quantity of a plurality of described PW pulses is that 5 and 5 PW pulses are respectively PW1, PW2, PW3, PW4 and PW5, and wherein PW1 is with reference to pulsewidth.
As the terminal of fire communication described in step 3 X
iDuring for detector, PW2 represents the remote testing state of switch state of described sniffer in the step 306: when doubly PW1 pulsewidth of PW2=1, the remote testing state of representing described sniffer is for closing; When doubly PW1 pulsewidth of PW2=2, the remote testing state of representing described sniffer is for opening.PW3 represents the ID sign indicating number by the described sniffer of representative of OEM producer distribution.PW4 represents the real-time sampling value of described sniffer.PW5 represents the specific product kind of described sniffer.
As the terminal of fire communication described in step 3 X
iDuring for output control module, PW2 represents that described output control module preserves the current on off state that receives the output control command in the step 306: when doubly PW1 pulsewidth of PW2=1, represent described output control module preservation current receive export control command state for closing; When doubly PW1 pulsewidth of PW2=2, represent described output control module preserve current receive export control command state for opening.PW3 represents the instant output monitoring state of described output control module: when doubly PW1 pulsewidth of PW3=1, the instant output monitoring state of representing described output control module is for normal; When doubly PW1 pulsewidth of PW3=2, represent that the instant output monitoring state of described output control module is open circuit; When doubly PW1 pulsewidth of PW3=3, represent that the instant output monitoring state of described output control module is short circuit.PW4 represents the instant simulation monitoring value of described output control module.PW5 represents the specific product kind of described output control module.
The specific product kind of described sniffer comprises heat detector, ion detector and photodetector; During doubly PW1 pulsewidth of the PW5=1 described in the step 306, the specific product kind of representing described sniffer is a heat detector; During doubly PW1 pulsewidth of PW5=2, the specific product kind of representing described sniffer is an ion detector; During doubly PW1 pulsewidth of PW5=3, the specific product kind of representing described sniffer is a photodetector.
In addition, in the present embodiment, a plurality of described fire communication terminals also comprise a plurality of monitor modules that described sniffer is monitored; The data of type bit described in the step 302 are logical one or logical zero, and it is detector that type bit data=logical one is represented described fire communication terminal, and it is output control module or monitor module that type bit data=logical zero is represented described fire communication terminal.
In addition, when comprising traditional two-wire system detector in the described detector, comprise one or more two-wire system monitoring circuit modules that described two-wire system detector is monitored in the described monitor module.Simultaneously, also comprise one or more micromodules that monitor module carried out microminiaturized and simplifying in a plurality of described fire communication terminals.
Communication register that described monitor module comprises supervisory controller, LED indicating member three, join with described supervisory controller and the processor of respectively described supervisory controller and LED indicating member three being controlled three, described supervisory controller and LED indicating member three all join with processor three.
As the terminal of fire communication described in step 3 X
iDuring for monitor module, the data splitting of data CB1 of control bit described in the step 304 and CB3 is represented the steering order to LED indicating member three: when CB1=CB3=1, the duty of LED indicating member three is flicker; When CB1=0, the duty of LED indicating member three is Chang Liang; When CB1=1 and CB3=0, the duty of LED indicating member three is for often going out.Whether control bit data CB1 represents the steering order that the lock-out state to described monitor module input monitoring resets, and when CB1=0, the input monitoring lock-out state of described monitor module is reset.Control bit data CB2 represents whether to reply the steering order of the specific product kind of information of described monitor module: when CB2=1, monitor module described in the step 306 is not replied its specific product kind of information to controller, and promptly the PW value of the representative monitor module specific product kind of information of being replied this moment is 0; When CB2=0, monitor module described in the step 306 is replied its specific product kind of information to controller.Whether control bit data CB 3 expressions control the steering order of switching the described monitor module Class A (corresponding than the monitor module of the advanced Class A mode of connection with present employed performance) or the Class B mode of connection (corresponding with traditional two-wire system monitoring circuit module), when the CB1=CB3=1 in the two continuous frames information that described monitor module receives, controller is controlled the described monitor module cancellation Class A or the Class B mode of connection; When the CB1=CB3=0 in the two continuous frames information that described monitor module receives, controller is controlled described monitor module and is switched to the Class A or the Class B mode of connection.
Correspondingly, PW2 represents the switching state of the described monitor module Class A or the Class B mode of connection in the step 306: when doubly PW1 pulsewidth of PW2=1, represent that the Class A of described monitor module or the Class B mode of connection are for normal; When doubly PW1 pulsewidth of PW2=2, represent that the Class A of described monitor module or the Class B mode of connection are for closing.PW3 represents the input monitoring state of the instant locking of described monitor module, the input monitoring state of described monitor module is according to by normal (being NORMAL), open circuit (being OPEN) locks from low to high to the priority of short circuit (SHORT), if instant input monitoring priority of status is higher than the input monitoring state of locking, then Suo Ding input monitoring state is updated to instant input monitoring state, otherwise, if instant input monitoring priority of status is less than or equal to the input monitoring state of locking, then Suo Ding input monitoring state does not change, when doubly PW1 pulsewidth of PW3=1, represent that the input monitoring state of the instant locking of described monitor module is NORMAL; When doubly PW1 pulsewidth of PW3=2, represent that the input monitoring state of the instant locking of described monitor module is OPEN; When doubly PW1 pulsewidth of PW3=3, represent that the input monitoring state of the instant locking of described monitor module is SHORT or ALARM.PW4 represents the instant simulation monitoring value of described monitor module.PW5 represents the specific product kind of described monitor module.
As the terminal of fire communication described in step 3 X
iDuring for micromodule, whether the data of control bit described in the step 304 CB1 represents the steering order that the lock-out state to described micromodule input monitoring resets, and when CB1=0, the input monitoring lock-out state of described micromodule is reset.Control bit data CB2 represents whether to reply the steering order of the specific product kind of information of described micromodule: when CB2=1, micromodule described in the step 306 is not replied its specific product kind of information to controller, and promptly the PW value of the representative micromodule specific product kind of information of being replied this moment is 0; When CB2=0, micromodule described in the step 306 is replied its specific product kind of information to controller.
Correspondingly, PW3 represents the instant output monitoring state of described micromodule in the step 306: when doubly PW1 pulsewidth of PW3=1, the instant output monitoring state of representing described micromodule is for normal; When doubly PW1 pulsewidth of PW3=2, represent that the instant output monitoring state of described micromodule is open circuit; When doubly PW1 pulsewidth of PW3=3, represent that the instant output monitoring state of described micromodule is short circuit.PW4 represents the instant simulation monitoring value of described micromodule.PW5 represents the specific product kind of described micromodule.
In addition, to represent described fire communication terminal be output control module, monitor module or micromodule to the data=logical zero of type bit described in the step 302; Under the situation of type bit data=logical zero, during doubly PW1 pulsewidth of the PW5=1 described in the step 306, the specific product kind of representing described fire communication terminal is monitor module or micromodule; When doubly PW1 pulsewidth of PW5=2, the specific product kind of representing described fire communication terminal is an output control module.
In sum, in the actual use, described clock signal and described data-signal square-wave signal for separating from the communication waveform of each frame information, the data low level of described data-signal and a data high position all are in the low level of clock signal, described synchronizing signal is the clock signal high level (synchronizing signal is to judge the beginning of a communication frame in the product software program, also is the reset time of software) that is no less than 3mS the duration.Simultaneously, data-signal is positioned at the low level of clock signal, thereby described fire communication terminal is all in the high level or the low level of the low level position of clock signal readout data signal.Correspondingly, work as described fire communication terminal X in the step 301
iWhen differentiation clock signal high level continues 3mS, described fire communication terminal X
iThen begin initialization related communication register, prepare to catch the negative edge of clock signal, and receive data.And each communication frame finishes to C from A.Among Fig. 2, circuit units under the time clock assurance blink states after the described PW5 is extinguished all the LED indicating members in the fire communication terminal behind this communication frame sign off, and except that each PW replys the gap, the width of all the other each data bit and bit interval is 300uS.
In conjunction with Fig. 3, in the present embodiment, described communicating circuit comprises respectively communication input circuit 2 and the communication output circuit 3 that joins with processing unit 1.
Described communication input circuit 2 comprises triode Q6 and Q17 and operational amplifier IC2A and IC2B, and the emitter of triode Q17 and described processing unit 1 join; The output terminal of operational amplifier IC2B divides two-way after resistance R 28, the one tunnel joins with described processing unit 1, and the collector of another road and triode Q6 joins, the grounded emitter of triode Q6; The base stage of triode Q6 is ground connection after resistance R 18, the output terminal of operational amplifier IC2A joins with the base stage of triode Q6 after capacitor C 14 and resistance R 30 and its normal phase input end joins with the output terminal of operational amplifier IC2B behind diode D8, the normal phase input end of operational amplifier IC2A joins with the output terminal of operational amplifier IC2A after capacitor C 5, the power supply input pin of operational amplifier IC2A and IC2B all joins with power end and described power end ground connection after capacitor C 3, the normal phase input end of operational amplifier IC2A connects described power end after resistance R 46, the inverting input of operational amplifier IC2B connects described power end through the inverting input of ground connection after the resistance R 1 and operational amplifier IC2B after resistance R 29, the inverting input of operational amplifier IC2A and IC2B joins and all connects capacitor C 8 back ground connection; The normal phase input end of operational amplifier IC2B divides three the tunnel, one the tunnel after resistance R 3 ground connection, another road is the positive output end of described communicating circuit after resistance R 43 through ground connection and Third Road after the capacitor C 17, the base stage of described triode Q17 is joined with the positive output end of described communicating circuit after resistance R 35, and the collector of triode Q17 and described power end join; The inter-collector of the emitter of described triode Q17 and triode Q6 is serially connected with on R50 and the described resistance R 50 and is connected to capacitor C 18.
Described communication output circuit 3 comprises triode Q1 and Q2, the collector of described triode Q2 joins with described processing unit 1 after resistance R 4, and the collector of triode Q2 divide three the tunnel, the one tunnel after capacitor C 8 ground connection, another road is through resistance R 16 ground connection, and the base stage of Third Road and triode Q1 is joined; The collector of described triode Q1 and the positive output end of described communicating circuit join, the grounded emitter of triode Q2 and its base stage ground connection after capacitor C 15, the emitter of triode Q1 is through joining and its emitter ground connection after resistance R 6 with the base stage of triode Q2 after the resistance R 5;
The negative output terminal ground connection of described communicating circuit.The positive-negative output end of described communicating circuit joins by communication cable and described controller.
In the actual use, the function of communication input circuit 2 also can provide reset signal that processing unit 1 is carried out communication and reset for isolate data-signal and synchronizing clock signals from the data stream of processing unit 1 input.35 pairs of input voltages of triode Q17 and resistance R carry out data buffering.The pin 5,6 of operational amplifier IC2B and 7 will compare through communication input signal and the clock voltage benchmark after resistance R 3 and the R43 decay.Capacitor C 17 is used for the high frequency interference filtering, and resistance R 1 and R29 provide the comparative voltage benchmark, and capacitor C 8 is used for filtering.The pin 1,2 of operational amplifier IC2A and 3 produces a reset pulse when being higher than the voltage clock signal benchmark when communication voltage and 3ms does not have communication continuously, trigger described processing unit 1 and carry out internal reset.Resistance R 46 and C5 produce the time-out time constant of 3ms, and resistance R 1 and R29 provide the voltage benchmark.Provide timer reset signal by capacitor C 5 and diode D8 discharge when clock signal produces, this reseting pulse width is by the Base-Emitter PN junction decision of capacitor C 14, resistance R 30, resistance R 13 and triode Q6.Triode Q6 offers processing unit 1 with this pulse signal.Resistance R 28 is used for the current limliting of triode Q6, and resistance R 50 decays to the clock signal benchmark with input data signal, and capacitor C 18 is used for triode Q17 parasitic capacitance discharge when the clock signal reduces.
The function of communication output circuit 3 is drawn electric current for producing on connection, begin to produce an electric current in pulse and dash point.Resistance R 4, R16 and R6 regulate the size of drawing electric current by triode Q1.Draw the current cycle pulse width to determine by the negative feedback of triode Q2.The time constant that resistance R 5 and capacitor C 15 provide feedback to start, capacitor C 6 is used for filtering.
In the present embodiment, the method that reads the PW value is as follows:
The loop is stuck in and starts (negative edge of each PW) behind the PW clock, start a timer Timer, begin simultaneously to detect and by reading the Time Calculation PW value of timer, the process of calculating the PW value withdraws under following condition and starts next PW clock (or next data bit clock):
1) circuit units draws electric current to finish, and the Timer timing is greater than 300uS, and this moment is for normally withdrawing from.
2) circuit units draws electric current to finish, and the Timer timing should be waited for after the Timer timing reaches 300uS and withdrawing from less than 300uS this moment.
3) detect the heavy location of circuit units, withdraw from the address number of whole communication process and the heavy location of record.
4) timer has regularly reached 8000uS, withdraws from.
In conjunction with Fig. 4, in the present embodiment, as different from Example 1: described communicating circuit comprises the power circuit 4 that draws decoding circuit 5, clock circuit 6, data circuit 7 and join with described processing unit 1.
Described power circuit 4 comprises mu balanced circuit 8, capacitor C 4 and diode D1, the VDD pin of described processing unit 1 divides three the tunnel, one the tunnel connects the VDD power end, and another road is ground connection after capacitor C 4, and Third Road joins with the positive output end of described communicating circuit behind mu balanced circuit 8 and diode D1.
Described clock circuit 6 comprises triode Q3, diode D3 and stabilivolt Z3, the pin of described processing unit 1 is once resistance R 10 backs and the VDD power end joins and the collector of pin of described processing unit 1 one and triode Q3 joins, and the grounded emitter of triode Q3 and its base stage connect the positive output end of described communicating circuit behind resistance R 8 and stabilivolt Z3; The base stage of triode Q3 ground connection and described resistance R 9 after resistance R 9 is anti-and be connected to diode D3.
Described data circuit 7 comprises triode Q4, diode D4 and resistance R 11, R12 and R13, the pin two of described processing unit 1 joins with the VDD power end after resistance R 13 and the collector of the pin two of processing unit 1 and triode Q4 joins, the grounded emitter of triode Q4 and its base stage through resistance R 11 after and the positive output end of described communicating circuit join; The base stage of triode Q4 ground connection and described resistance R 12 after resistance R 12 is anti-and be connected to diode D4.
In the present embodiment, described clock circuit 6 and data circuit 7 combine the communication input circuit 2 that is equivalent among the embodiment 1.
The described decoding circuit 5 that draws comprises triode Q102, compound transistor Q101, diode D102, capacitor C 105 and C106 and resistance R 105, R106 and R107; The pin three of described processing unit 1 is through branch three tunnel, tunnel ground connection after capacitor C 105 after the resistance R 105, and the collector of another road and triode Q102 joins, and the base stage of Third Road and compound transistor Q101 is joined; The grounded emitter of triode Q102 and its base stage are through capacitor C 106 ground connection, the base stage of triode Q102 is joined with the emitter of compound transistor Q101 after resistance R 106, and the emitter of compound transistor Q101 joins with the positive output end of described communicating circuit behind diode D102 through ground connection after the resistance R 107 and its collector.
The negative output terminal ground connection of described communicating circuit.
In the present embodiment, the principle of work of remainder, communication means and step are all identical with embodiment 1.
The above; it only is preferred embodiment of the present invention; be not that the present invention is imposed any restrictions, everyly any simple modification that above embodiment did, change and equivalent structure changed, all still belong in the protection domain of technical solution of the present invention according to the technology of the present invention essence.
Claims (9)
1. fire protection alarm system communication means based on serial communication protocol, its fire protection alarm system comprise controller, with matched a plurality of loops card of controller or communicating circuit and a plurality of fire communication terminal of joining with controller, a plurality of described fire communication terminals are carried out two-way communication by a plurality of described loop cards or described communicating circuit and controller respectively, and described loop card or described communicating circuit all are connected by connection with described fire communication terminal room; A plurality of described fire communication terminals comprise a plurality of detectors and a plurality of output control module, one of corresponding with a plurality of described fire communication terminals respectively and all corresponding composition with each loop card of each fire communication terminal of a plurality of described loops card is supporting to carry out the circuit units of information transmit-receive with controller, it is characterized in that: the communication frame that described controller and a plurality of described fire communication terminal room are received and sent messages is from front to back successively by the type bit data of 1 bit representation fire communication terminal type, 8 address size certificates, a plurality of control bit data, 1 strange/even parity bit data, the loopback information that a plurality of PW pulses are formed and a synchronizing signal are formed, and described 8 address sizes are according to comprising 4 address size certificate and 4 address size certificates of representing the decimal address low level of representing a decimal address high position; Every frame information that described controller and a plurality of described fire communication terminal room are received and dispatched is corresponding to be formed by clock signal, data-signal and three types of signals of synchronizing signal, wherein said synchronizing signal is represented the beginning or the end of a communication frame, and the type of described type bit data representation fire communication terminal is detector or output control module;
When described controller and a plurality of described fire communication terminal room carried out two-way communication, its communication means may further comprise the steps:
Step 1, information send: controller with the data stream form by described loop card or communicating circuit simultaneously to a plurality of described fire communication terminal transmits information, and should earlier described 8 address sizes certificate be transformed to binary data before the controller transmission information; Each frame information that controller sent is formed by the superposed signal of synchronizing signal and clock signal and data-signal; For each frame information that controller sent, described clock signal is isolated a series of clock signals from the superposed signal of each frame information, and described data-signal comprises isolated 1 type bit data, 8 address size certificates, a plurality of control bit data and 1 strange/even parity bit data from the superposed signal of each frame information;
Step 2, information transmission: described loop card or communicating circuit are passed to a plurality of described fire communication terminals with the information synchronization that controller sent; And in the information exchanging process, described loop card or communicating circuit separate the clock signal of being transmitted in each frame information with data-signal;
Step 3, message pick-up and analysis and judgement and information-reply: after information is passed to a plurality of described fire communication terminals, the corresponding information of respectively transmission being come of a plurality of described fire communication terminals is differentiated, and is fire communication terminal X for any fire communication terminal wherein
i, its message pick-up process is as follows:
301, as described fire communication terminal X
iAfter determining a synchronizing signal, illustrate that be the beginning of a communication frame this moment, at this moment described fire communication terminal X
iThe communication register that its inside connected is carried out initialization and prepares to receive the 1st bit data;
302, the 1st bit data receives and analysis and judgement: described fire communication terminal X
iAfter receiving the 1st bit data and being the type bit data, the type bit data that received are carried out analysis and judgement: when judgement draws the type bit data that received when consistent with self type, then this moment fire communication terminal X
iContinue to receive the data of present frame information back, promptly enter step 303; Otherwise, described fire communication terminal X
iWithdraw from the Data Receiving of present frame information, and turn back to the state that receives the synchronizing signal that the next frame information represent present frame begins, promptly enter step 301;
303, the 2-9 bit data receives and analysis and judgement: described fire communication terminal X
iThe 2-9 bit data of present frame information back is the address size certificate described in the receiving step 302 continuously, and deposits the 2-9 bit data that is received in fire communication terminal X successively
iIn the inner communication register that is connected; And after the 2-9 bit data is all received, the 2-9 bit data that is received is carried out analysis and judgement: when judgement draws the 2-9 bit data that is received when consistent with the address bit of self, then this moment fire communication terminal X
iContinue to receive the data of present frame information back, promptly enter step 304; Otherwise, described fire communication terminal X
iWithdraw from the Data Receiving of present frame information, and turn back to the state of the synchronizing signal that the next frame information that receives the described present frame of representative begins, promptly enter step 301;
304, a plurality of control bit Data Receiving and action: described fire communication terminal X
iContinuously in the present frame information described in the receiving step 303 address size according to a plurality of control bit data of back, and the data splitting of a plurality of control bit data of being received carried out analysis and judgement, and carry out corresponding actions according to the steering order of described data splitting representative;
305, strange/even parity bit Data Receiving: described fire communication terminal X
iStrange/even parity bit data of a plurality of control bit data back in the present frame information described in the continuation receiving step 304, and all data that received in the step 302,303 and 304 are carried out very/even parity check according to the strange/even parity bit data that received: when very/when even parity check is correct, described fire communication terminal X
iBegin to return sign indicating number, promptly enter step 306 to controller; Otherwise, described fire communication terminal X
iTurn back to the state that receives the synchronizing signal that the next frame information represent present frame begins, promptly enter step 301;
306, information-reply: described fire communication terminal X
iIts specific product kind, concrete duty and the analog quantity numerical value of gathering should be back to controller by described loop card or communicating circuit by a plurality of PW pulsion phases; Described controller is corresponding to be read successively from described fire communication terminal X
iThe PW value of a plurality of PW pulses of transmitting and coming, and the PW value of comprehensive a plurality of described PW pulses are to described fire communication terminal X
iThe work at present state judge;
307, after information-reply finishes, described fire communication terminal X
iReceive the synchronizing signal of the next frame information of present frame described in the step 302,303,304 and 305, then return step 301;
Step 4, continuous repeating step 301-307 then can realize described controller and described fire communication terminal X
iBetween real time bidirectional communication; In like manner, can realize that described controller communicates by letter with the real time bidirectional of a plurality of described fire communication terminal rooms.
2. according to the described fire protection alarm system communication means of claim 1 based on serial communication protocol, it is characterized in that: described detector comprises sniffer, LED indicating member one with remote testing function, respectively the remote testing state of described sniffer and the duty of LED indicating member one is controlled the processing unit (1) of adjustment and the communication register that joins with described processing unit (1), and described processing unit (1) joins with sniffer and LED indicating member one respectively; Described processing unit (1) joins with described communicating circuit;
Communication register that described output control module comprises o controller, LED indicating member two, join with described o controller and the processor of respectively described o controller and LED indicating member two being controlled two, described o controller and LED indicating member two all join with processor two;
The quantity of a plurality of described control bit data is that 3 and 3 control bit data are respectively CB1, CB2 and CB3, described strange/the even parity bit data should be the even parity bit data mutually; Wherein the data splitting of control bit data CB1 and CB3 is represented the steering order to LED indicating member one or LED indicating member two: when CB1=CB3=1, the duty of LED indicating member one or LED indicating member two is flicker; When CB1=0, the duty of LED indicating member one or LED indicating member two is Chang Liang; When CB1=1 and CB3=0, the duty of LED indicating member one or LED indicating member two is for often going out;
As the terminal of fire communication described in step 3 X
iDuring for detector, control bit data CB2 represents whether to reply the steering order of the specific product kind of information of described detector: when CB2=1, detector described in the step 306 is not replied its specific product kind of information to controller, and promptly the PW value of the representative detector specific product kind of information of being replied this moment is 0; When CB2=0, detector described in the step 306 is replied its specific product kind of information to controller; Control bit data CB3 represents to control the steering order whether described sniffer enters the remote testing state, and when the CB1=CB3=1 in the two continuous frames information that described detector receives, described detector withdraws from the remote testing state; When the CB1=CB3=0 in the two continuous frames information that described detector receives, described detector enters the remote testing state; Correspondingly, when the processing unit of detector described in the step 304 (1) receives 3 control bit data, data splitting to 3 control bit data of receive carries out analysis and judgement, and carries out corresponding actions according to the steering order control sniffer and the LED indicating member one of described data splitting representative;
As the terminal of fire communication described in step 3 X
iDuring for output control module, whether control bit data CB1 represents the steering order that the lock-out state to described output control module output monitoring resets, and when CB1=0, the output monitoring lock-out state of described output control module is reset; Control bit data CB2 represents whether to reply the steering order of the specific product kind of information of described output control module: when CB2=1, output control module described in the step 306 is not replied its specific product kind of information to controller, and promptly the PW value of the representative output control module specific product kind of information of being replied this moment is 0; When CB2=0, output control module described in the step 306 is replied its specific product kind of information to controller, and this moment described output control module its communication register of processor dual-purpose in institute's output control command of receiving and preserving upgrade the output order of current described o controller; Control bit data CB 3 represents whether whether the described output control module of control break preserves the current steering order that receives the output control command by communication register, when the CB1=CB3=1 in the two continuous frames information that described output control module receives, controller is controlled described output control module preservation and is received the state of output control command this moment for disconnecting; When the CB1=CB3=0 in the two continuous frames information that described output control module receives, controller is controlled described output control module preservation and is received the state of output control command this moment for closed; Correspondingly, when the processor two of output control module described in the step 304 receives 3 control bit data, data splitting to 3 control bit data of receive carries out analysis and judgement, and carries out corresponding actions according to the steering order control o controller and the LED indicating member two of described data splitting representative.
3. according to the described fire protection alarm system communication means of claim 2 based on serial communication protocol, it is characterized in that: the quantity of a plurality of described PW pulses is that 5 and 5 PW pulses are respectively PW1, PW2, PW3, PW4 and PW5, and wherein PW1 is with reference to pulsewidth;
As the terminal of fire communication described in step 3 X
iDuring for detector, PW2 represents the remote testing state of switch state of described sniffer in the step 306: when doubly PW1 pulsewidth of PW2=1, the remote testing state of representing described sniffer is for closing; When doubly PW1 pulsewidth of PW2=2, the remote testing state of representing described sniffer is for opening; PW3 represents the I D sign indicating number by the described sniffer of representative of OEM producer distribution; PW4 represents the real-time sampling value of described sniffer; PW5 represents the specific product kind of described sniffer;
As the terminal of fire communication described in step 3 X
iDuring for output control module, PW2 represents that described output control module preserves the current on off state that receives the output control command in the step 306: when doubly PW1 pulsewidth of PW2=1, represent described output control module preservation current receive export control command state for closing; When doubly PW1 pulsewidth of PW2=2, represent described output control module preserve current receive export control command state for opening; PW3 represents the instant output monitoring state of described output control module: when doubly PW1 pulsewidth of PW3=1, the instant output monitoring state of representing described output control module is for normal; When doubly PW1 pulsewidth of PW3=2, represent that the instant output monitoring state of described output control module is open circuit; When doubly PW1 pulsewidth of PW3=3, represent that the instant output monitoring state of described output control module is short circuit; PW4 represents the instant simulation monitoring value of described output control module; PW5 represents the specific product kind of described output control module.
4. according to the described fire protection alarm system communication means based on serial communication protocol of claim 3, it is characterized in that: the specific product kind of described sniffer comprises heat detector, ion detector and photodetector; During doubly PW1 pulsewidth of the PW5=1 described in the step 306, the specific product kind of representing described sniffer is a heat detector; During doubly PW1 pulsewidth of PW5=2, the specific product kind of representing described sniffer is an ion detector; During doubly PW1 pulsewidth of PW5=3, the specific product kind of representing described sniffer is a photodetector.
5. according to the described fire protection alarm system communication means based on serial communication protocol of claim 3, it is characterized in that: a plurality of described fire communication terminals also comprise a plurality of monitor modules that described sniffer is monitored; The data of type bit described in the step 302 are logical one or logical zero, and it is detector that type bit data=logical one is represented described fire communication terminal, and it is output control module or monitor module that type bit data=logical zero is represented described fire communication terminal.
6. according to the described fire protection alarm system communication means of claim 5 based on serial communication protocol, it is characterized in that: communication register that described monitor module comprises supervisory controller, LED indicating member three, join with described supervisory controller and the processor of respectively described supervisory controller and LED indicating member three being controlled three, described supervisory controller and LED indicating member three all join with processor three;
As the terminal of fire communication described in step 3 X
iDuring for monitor module, the data splitting of data CB1 of control bit described in the step 304 and CB3 is represented the steering order to LED indicating member three: when CB1=CB3=1, the duty of LED indicating member three is flicker; When CB1=0, the duty of LED indicating member three is Chang Liang; When CB1=1 and CB3=0, the duty of LED indicating member three is for often going out; Whether control bit data CB1 represents the steering order that the lock-out state to described monitor module input monitoring resets, and when CB1=0, the input monitoring lock-out state of described monitor module is reset; Control bit data CB2 represents whether to reply the steering order of the specific product kind of information of described monitor module: when CB2=1, monitor module described in the step 306 is not replied its specific product kind of information to controller, and promptly the PW value of the representative monitor module specific product kind of information of being replied this moment is 0; When CB2=0, monitor module described in the step 306 is replied its specific product kind of information to controller; Control bit data CB3 represents whether control the steering order of switching the described monitor module Class A or the ClassB mode of connection, when the CB1=CB3=1 in the two continuous frames information that described monitor module receives, controller is controlled the described monitor module cancellation ClassA or the ClassB mode of connection; When the CB1=CB3=0 in the two continuous frames information that described monitor module receives, controller is controlled described monitor module and is switched to the ClassA or the ClassB mode of connection;
Correspondingly, PW2 represents the switching state of the described monitor module ClassA or the ClassB mode of connection in the step 306: when doubly PW1 pulsewidth of PW2=1, represent that the ClassA of described monitor module or the ClassB mode of connection are for normal; When doubly PW1 pulsewidth of PW2=2, represent that the ClassA of described monitor module or the ClassB mode of connection are for closing; PW3 represents the input monitoring state of the instant locking of described monitor module, the input monitoring state of described monitor module is according to by normally, the priority of short circuit of opening a way locks from low to high, if instant input monitoring priority of status is higher than the input monitoring state of locking, then Suo Ding input monitoring state is updated to instant input monitoring state, otherwise, if instant input monitoring priority of status is less than or equal to the input monitoring state of locking, then Suo Ding input monitoring state does not change, when doubly PW1 pulsewidth of PW3=1, the input monitoring state of representing the instant locking of described monitor module is for normal; When doubly PW1 pulsewidth of PW3=2, represent that the input monitoring state of the instant locking of described monitor module is open circuit; When doubly PW1 pulsewidth of PW3=3, represent that the input monitoring state of the instant locking of described monitor module is short circuit or warning; PW4 represents the instant simulation monitoring value of described monitor module; PW5 represents the specific product kind of described monitor module.
7. according to the described fire protection alarm system communication means of each claim in the claim 1 to 4 based on serial communication protocol, it is characterized in that: described clock signal and described data-signal square-wave signal for separating from the communication waveform of each frame information, the data low level of described data-signal and a data high position all are in the low level of clock signal, and described synchronizing signal is the clock signal high level that is no less than 3mS the duration.
8. according to the described fire protection alarm system communication means based on serial communication protocol of claim 2, it is characterized in that: described communicating circuit comprises respectively communication input circuit (2) and the communication output circuit (3) that joins with processing unit (1);
Described communication input circuit (2) comprises triode Q6 and Q17 and operational amplifier IC2A and IC2B, and the emitter of triode Q17 and described processing unit (1) join; The output terminal of operational amplifier IC2B divides two-way after resistance R 28, the one tunnel joins with described processing unit (1), and the collector of another road and triode Q6 joins, the grounded emitter of triode Q6; The base stage of triode Q6 is ground connection after resistance R 18, the output terminal of operational amplifier IC2A joins with the base stage of triode Q6 after capacitor C 14 and resistance R 30 and its normal phase input end joins with the output terminal of operational amplifier IC2B behind diode D8, the normal phase input end of operational amplifier IC2A joins with the output terminal of operational amplifier IC2A after capacitor C 5, the power supply input pin of operational amplifier IC2A and IC2B all joins with power end and described power end ground connection after capacitor C 3, the normal phase input end of operational amplifier IC2A connects described power end after resistance R 48, the inverting input of operational amplifier IC2B connects described power end through the inverting input of ground connection after the resistance R 1 and operational amplifier IC2B after resistance R 29, the inverting input of operational amplifier IC2A and IC2B joins and all connects capacitor C 8 back ground connection; The normal phase input end of operational amplifier IC2B divides three the tunnel, one the tunnel after resistance R 3 ground connection, another road is the positive output end of described communicating circuit after resistance R 43 through ground connection and Third Road after the capacitor C 17, the base stage of described triode Q17 is joined with the positive output end of described communicating circuit after resistance R 35, and the collector of triode Q17 and described power end join; The inter-collector of the emitter of described triode Q17 and triode Q6 is serially connected with on R50 and the described resistance R 50 and is connected to capacitor C 18;
Described communication output circuit (3) comprises triode Q1 and Q2, the collector of described triode Q2 joins with described processing unit (1) after resistance R 4, and the collector of triode Q2 divides three the tunnel, one the tunnel after capacitor C 8 ground connection, another road is through resistance R 16 ground connection, and the base stage of Third Road and triode Q1 is joined; The collector of described triode Q1 and the positive output end of described communicating circuit join, the grounded emitter of triode Q2 and its base stage ground connection after capacitor C 15, the emitter of triode Q1 is through joining and its emitter ground connection after resistance R 6 with the base stage of triode Q2 after the resistance R 5;
The negative output terminal ground connection of described communicating circuit.
9. according to the described fire protection alarm system communication means based on serial communication protocol of claim 2, it is characterized in that: described communicating circuit comprises the power circuit (4) that draws decoding circuit (5), clock circuit (6), data circuit (7) and join with described processing unit (1);
Described power circuit (4) comprises mu balanced circuit (8), capacitor C 4 and diode D1, the VDD pin of described processing unit (1) divides three the tunnel, one the tunnel connects the VDD power end, another road is ground connection after capacitor C 4, and Third Road joins with the positive output end of described communicating circuit behind mu balanced circuit (8) and diode D1;
Described clock circuit (6) comprises triode Q3, diode D3 and stabilivolt Z3, the pin of described processing unit (1) is once resistance R 10 backs and the VDD power end joins and the collector of pin of described processing unit (1) one and triode Q3 joins, and the grounded emitter of triode Q3 and its base stage connect the positive output end of described communicating circuit behind resistance R 8 and stabilivolt Z3; The base stage of triode Q3 ground connection and described resistance R 9 after resistance R 9 is anti-and be connected to diode D3;
Described data circuit (7) comprises triode Q4, diode D4 and resistance R 11, R12 and R13, the pin two of described processing unit (1) joins with the VDD power end after resistance R 13 and the collector of the pin two of processing unit (1) and triode Q4 joins, the grounded emitter of triode Q4 and its base stage through resistance R 11 after and the positive output end of described communicating circuit join; The base stage of triode Q4 ground connection and described resistance R 12 after resistance R 12 is anti-and be connected to diode D4;
The described decoding circuit (5) that draws comprises triode Q102, compound transistor Q101, diode D102, capacitor C 105 and C106 and resistance R 105, R106 and R107; The pin three of described processing unit (1) is through branch three tunnel, tunnel ground connection after capacitor C 105 after the resistance R 105, and the collector of another road and triode Q102 joins, and the base stage of Third Road and compound transistor Q101 is joined; The grounded emitter of triode Q102 and its base stage are through capacitor C 106 ground connection, the base stage of triode Q102 is joined with the emitter of compound transistor Q101 after resistance R 106, and the emitter of compound transistor Q101 joins with the positive output end of described communicating circuit behind diode D102 through ground connection after the resistance R 107 and its collector;
The negative output terminal ground connection of described communicating circuit.
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| CN2010101359206A CN101819710B (en) | 2010-03-30 | 2010-03-30 | Two-way serial communication protocol based communication method for fire alarm system |
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| CN2010101359206A CN101819710B (en) | 2010-03-30 | 2010-03-30 | Two-way serial communication protocol based communication method for fire alarm system |
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| JP2012169746A (en) * | 2011-02-10 | 2012-09-06 | Mitsumi Electric Co Ltd | Communication system and device thereof |
| CN105701997A (en) * | 2016-03-02 | 2016-06-22 | 北京小米移动软件有限公司 | Alarm method and device |
| CN107193242B (en) * | 2016-03-14 | 2021-06-04 | 西门子瑞士有限公司 | Equipment and method for realizing alarm synchronization in fire-fighting system |
| CN108022398B (en) * | 2016-11-04 | 2020-03-10 | 西安盛赛尔电子有限公司 | Communication method for fire alarm system |
| CN108900727A (en) * | 2018-06-26 | 2018-11-27 | 吉林省瑞中科技有限公司 | fire protection alarm system |
| CN110048449B (en) * | 2019-03-19 | 2021-12-10 | 尚特杰电力科技有限公司 | Micro-grid off-grid and on-grid rapid conversion system and method |
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| KR100503568B1 (en) * | 1999-12-30 | 2005-07-26 | 엘지전자 주식회사 | Fire alarm system and method thereof |
| CN1201272C (en) * | 2002-08-23 | 2005-05-11 | 海湾安全技术股份有限公司 | Alarm information transmission method and two-wire system communication bus equipment |
| CN1333376C (en) * | 2004-03-04 | 2007-08-22 | 深圳市泛海三江电子有限公司 | Fire alarm application layer data transmission method based on CAN2.0B |
| CN1750057A (en) * | 2004-09-17 | 2006-03-22 | 徐小源 | Fire automatic warning device and its method for visual intelligent composite fire extinguishing |
| CN101119481B (en) * | 2007-08-27 | 2010-04-21 | 刘文萍 | Remote alarm video monitoring method |
| CN101256708B (en) * | 2008-01-29 | 2011-06-08 | 西安特菲尔电子有限公司 | Non-master-slave mode network communicating mode for fire alarming |
| CN101577033A (en) * | 2009-05-26 | 2009-11-11 | 官洪运 | Multiband infrared image-type fire detecting system and fire alarm system thereof |
| CN101763704B (en) * | 2009-12-28 | 2012-07-04 | 余博贺 | Intelligent home fire-fighting detection and alarm system and control method thereof |
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