CN110136410A - A kind of two lines bus digital communication method of fire alarm and linkage control system - Google Patents
A kind of two lines bus digital communication method of fire alarm and linkage control system Download PDFInfo
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- CN110136410A CN110136410A CN201910543145.9A CN201910543145A CN110136410A CN 110136410 A CN110136410 A CN 110136410A CN 201910543145 A CN201910543145 A CN 201910543145A CN 110136410 A CN110136410 A CN 110136410A
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- monitoring unit
- data frame
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- fire alarm
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/01—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems characterised by the transmission medium
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Alarm Systems (AREA)
Abstract
The present invention provides a kind of two lines bus digital communication method of fire alarm and linkage control system, the fire alarm and linkage control system includes: the monitoring unit of controller and arrangement connected to the controller at the scene, this method comprises the following steps: controller sends two line communication data frame to monitoring unit, carries out inspection and publication control operation to monitoring unit；Wherein, the data frame includes data packet and answer area；Monitoring unit generates the pulse of different in width in answering area, transmits status information to controller, realizes two-way data interaction communication.
Description
Technical field
The present invention relates to fire alarm system technical fields, and in particular to the two of a kind of fire alarm and linkage control system
Bus digital communication method.
Background technique
The supervision and control of existing fire alarm and linkage controller to fire alarm monitoring unit, using patrolling in turn
The working method of inspection, monitoring unit provide fire alarm, failure, feedback, self test failure, pollution within multiple tiny periods of distribution
Etc. information.In this communication mode, the information content for not only including is small, but also to the redundancy very little of bus, is not able to satisfy fire
The demand for development of calamity alarm and coordinated control system, and it is highly prone to the interference of extraneous industrial equipment.
Existing fire alarm and linkage controller take one-to-many routine inspection mode, and Baud Length is wider, with kindling
The growth of calamity alarm monitoring element number, polling period up time extend, and result in the long consequence of controller time of fire alarming.
Summary of the invention
One-to-many routine inspection mode is taken for existing fire alarm and linkage controller, and Baud Length is wider, with
The growth of fire alarm monitoring element number, polling period up time extend, result in the long problem of controller time of fire alarming, this
Invention provides a kind of two lines bus digital communication method of fire alarm and linkage control system.
The technical scheme is that
A kind of two lines bus digital communication method of fire alarm and linkage control system, the fire alarm and linkage control
System processed includes: the monitoring unit of controller and arrangement connected to the controller at the scene, and this method comprises the following steps:
Controller sends two line communication data frame to monitoring unit, carries out inspection and publication control behaviour to monitoring unit
Make；Wherein, the data frame includes data packet and answer area；
Monitoring unit generates the pulse of different in width in answering area, transmits status information to controller, realizes two-way
Data interaction communication.
Preferably, include: start bit comprising information in the data packet, data field, stop bits, treatment region, answer area；
Data field includes the data bit of order and address；
Area is answered, for identification the status information of monitoring unit, monitoring unit generates the arteries and veins of different in width in answering area
Punching transmits status information to controller.
Preferably, the controller sends two line communication data frame to monitoring unit, carries out inspection to monitoring unit
With publication control operation, specifically include:
Controller sends two line communication data frame with binary digit symbol technology, carries out inspection and hair to monitoring unit
Cloth control operation；
Wherein, the type of the communications data frame includes emergency inquiry frame, status inquiry frame and control operation frame.
Controller periodically sends emergency inquiry data frame, and other times send status inquiry data frame or control operation data
Frame.
Preferably, the controller sends two line communication data frame with binary digit symbol technology, single to monitoring
Member carries out inspection and publication control operation, specifically includes:
The alert event of monitoring unit is to inquire data frame by emergency to upload；
After monitoring unit receives emergency inquiry data frame, actively gives and respond, controller passes through segmented request order
It determines to sector address where the monitoring unit, the status inquiry command in section is retransmited, to lock the report of the monitoring unit address
Alert event.
Preferably, the controller sends two line communication data frame with binary digit symbol technology, single to monitoring
Member carries out inspection and publication control operation, further includes:
The common event and state of monitoring unit, are uploaded to controller when being by receiving status inquiry data frame；
When there is the control opened, closed to interlocking equipment operation, controller preferentially sends control operation data frame,
Corresponding unit is given in its answer area to be responded, and illustrates to complete operational order.
Preferably, the controller sends two line communication data frame with binary digit symbol technology, single to monitoring
Member carries out in inspection and publication control operation, and controller sends the tool of two line communication data frame with binary digit symbol technology
Body step includes:
Controller to alarm bus out-put supply signal；
Control operation is judged whether there is, if so, sending data frame and handling answer event.
Preferably, the control that judges whether there is operates further include:
If not controlling operation, judge whether to emergency query time；
If reaching emergency query time, step is executed: sending data frame and handle answer event；
If not reaching emergency query time, judge whether to the status inquiry time；
If reaching the status inquiry time, step is executed: sending data frame and handle answer event.
Preferably, the monitoring unit generates the pulse of different in width in answering area, to controller transmitting state letter
Breath is realized and is specifically included in the step of two-way data interaction communicates:
Monitoring unit judges whether to receive operation control frame；
If receiving operation control frame, judge whether it is that operation control is carried out to this unit, if so, handling this unit
Step is executed after operation: being extracted the pulse that electric current generates different in width answering area, is transmitted status information to controller；
Preferably, after the monitoring unit judges whether to receive the step of operation control frame further include:
If it is not, executing step: judging whether to receive emergency inquiry data frame.
If so, judging whether there is emergency, if there is emergency, the arteries and veins that electric current generates different in width is extracted answering area
Punching transmits status information to controller.
Preferably, after the monitoring unit judges whether to receive the step of emergency inquiry data frame further include:
If not receiving emergency inquiry data frame, judge whether to receive status inquiry frame；
If receiving status inquiry frame, judge whether status inquiry frame is the state for inquiring this unit, if not receiving state
Inquire frame, execute step: preparation receives data frame again；
If this unit, step is executed: extracting the pulse that electric current generates different in width answering area, transmit shape to controller
State information；If not this unit, executes step: preparation receives data frame again.In this communication means, data frame is improved
Baud rate, although data packet contains much information, overall time is greatly shortened, and is shortened so that polling period is synchronous, to mention
High efficiency of transmission.
As can be seen from the above technical solutions, it is set the invention has the following advantages that the threshold for answering area is required to reach
Determine threshold value and gives the different duration according to different events, for the instantaneous interference under large industry equipment operating conditions,
Redundancy with super strength greatly reduces the rate of false alarm of existing equipment, and fire alarm and linkage control system is greatly improved
The anti-interference ability of system.Message transmission rate, the binary digit of use are improved using this two lines bus digital communication method
The symbol skill upgrading information content of data packet, to effectively improve data transmission efficiency.
In addition, design principle of the present invention is reliable, structure is simple, has very extensive application prospect.
It can be seen that compared with prior art, the present invention have substantive distinguishing features outstanding and it is significant ground it is progressive, implementation
Beneficial effect be also obvious.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, for those of ordinary skill in the art
Speech, without creative efforts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is controller alarm bus circuit structural schematic diagram of the present invention.
Fig. 2 is monitoring unit electrical block diagram of the present invention.
Fig. 3 is two line communication data frame timing diagram of the present invention.
Fig. 4 is the program flow diagram of the transmission data frame of controller of the present invention.
Fig. 5 is the program flow diagram of monitoring unit of the present invention.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, below in conjunction with of the invention real
The attached drawing in example is applied, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work, all should belong to protection of the present invention
Range.
The embodiment of the present invention provides a kind of two lines bus digital communication method of fire alarm and linkage control system, described
Fire alarm and linkage control system includes: the monitoring unit of controller and arrangement connected to the controller at the scene, and monitoring is single
Member is for collection site warning message or directly controls interlocking equipment, and the effect of controller is that supervision control unit and linkage are set
Standby state, this method comprises the following steps:
Controller sends two line communication data frame to monitoring unit, carries out inspection and publication control behaviour to monitoring unit
Make；Wherein, the data frame includes data packet and answer area；Controller alarm bus circuit structural schematic diagram as shown in Figure 1,
The modulation output data frame of power supply 1, power supply 2 through microcontroller MCPU, it is predefined by current sampling circuit identification answering area
Electric current is converted to pulse signal and feeds back to microcontroller MCPU, completes the information exchange of controller and monitoring unit；
Monitoring unit generates the pulse of different in width in answering area, transmits status information to controller, realizes two-way
Data interaction communication.Monitoring unit electrical block diagram as shown in Fig. 2, monitoring unit from alarm bus obtain working power,
It is supplied to microprocessor MCPU, MCPU parses data frame by sample circuit and software, predetermined current is exported answering area, when
Between width according to oneself state determine.
As shown in figure 3, the controller sends two line communication data frame with binary digit symbol technology, to monitoring
Unit carries out inspection and publication control operation, comprising information includes: start bit, data field, stop bits, place in the data packet
It manages area, answer area；
Data field includes the data bit of order and address；
Area is answered, for identification the status information of monitoring unit, monitoring unit generates the arteries and veins of different in width in answering area
Punching, the status informations such as normal, failure, fire alarm, feedback, self test failure, pollution to controller transmitting, to realize two-way data
It interactively communicates, has been improved particularly the anti-interference ability of controller, so that fire alarm and linkage control system is more reliable and more stable.
" start bit ": bus is the beginning flag as data packet from 24V down to 0V.
" data field: 19~83 data, comprising: order, address and data.
" stop bits ": for the stop bits of monitoring unit.
" treatment region ": for the command processing time of monitoring unit.
" answering area ": on the basis of failing edge, monitoring unit, which provides, is greater than 50mA electric current, and the time difference for providing electric current is come
The states such as normal, failure, fire alarm, feedback to controller transmitting.
Wherein, the type of the communications data frame includes emergency inquiry frame, status inquiry frame and control operation frame.
Controller periodically sends emergency inquiry data frame, and other times send status inquiry data frame or control operation data
Frame.
The alert event of monitoring unit is to inquire data frame by emergency to upload；
After monitoring unit receives emergency inquiry data frame, actively gives and respond, controller passes through segmented request order
It determines to sector address where the monitoring unit, the status inquiry command in section is retransmited, to lock the report of the monitoring unit address
Alert event.
The common event and state of monitoring unit, are uploaded to controller when being by receiving status inquiry data frame；
When there is the control opened, closed to interlocking equipment operation, controller preferentially sends control operation data frame,
Corresponding unit is given in its answer area to be responded, and illustrates to complete operational order.
The controller sends two line communication data frame with binary digit symbol technology, patrols to monitoring unit
In inspection and publication control operation, controller sends the program flow diagram of communications data frame as shown in figure 4, specific steps include:
Controller exports DC24v power supply signal to alarm bus；
Control operation is judged whether there is, if so, sending Frame processes answers event.
If not controlling operation, judge whether to emergency query time；
If reaching emergency query time, step is executed: sending Frame processes and answer event；
If not reaching emergency query time, judge whether to the status inquiry time；
If reaching the status inquiry time, step is executed: sending Frame processes and answer event.
The monitoring unit generates the pulse of different in width in answering area, transmits status information to controller, realizes
Two-way data interaction communication, the program flow diagram of monitoring unit is as shown in figure 5, specifically include:
Monitoring unit judges whether to receive operation control, if the operation to this unit controls, executes step: handling behaviour
Make, extracts the pulse that electric current generates different in width answering area, transmit status information to controller；
If it is not, judging whether there is emergency, if there is emergency, step is executed: extracting electric current generation not answering area
With the pulse of width, status information is transmitted to controller.
If not receiving emergency inquiry data frame, judge whether to receive status inquiry frame；
If receiving status inquiry frame, judge whether status inquiry frame is the state for inquiring this unit, if not receiving state
Inquire frame, execute step: preparation receives data frame again；
If this unit, step is executed: extracting the pulse that electric current generates different in width answering area, transmit shape to controller
State information；If not this unit, executes step: preparation receives data frame again.
In this communication means, the baud rate of data frame is improved, although data packet contains much information, when whole
Between greatly shorten shorten so that polling period is synchronous, to improve efficiency of transmission.
Although by reference to attached drawing and combining the mode of preferred embodiment to the present invention have been described in detail, the present invention
It is not limited to this.Without departing from the spirit and substance of the premise in the present invention, those of ordinary skill in the art can be to the present invention
Embodiment carry out various equivalent modifications or substitutions, and these modifications or substitutions all should in covering scope of the invention/appoint
What those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, answer
It is included within the scope of the present invention.Therefore, protection scope of the present invention is answered described is with scope of protection of the claims
It is quasi-.
Claims (9)
1. a kind of two lines bus digital communication method of fire alarm and linkage control system, the fire alarm and linkage control
System includes: the monitoring unit of controller and arrangement connected to the controller at the scene, which is characterized in that this method includes as follows
Step:
Controller sends two line communication data frame to monitoring unit, carries out inspection and publication control operation to monitoring unit；Its
In, the data frame includes data packet and answer area；
Monitoring unit generates the pulse of different in width in answering area, transmits status information to controller, realizes two-way data
It interactively communicates.
2. a kind of two lines bus digital communication method of fire alarm and linkage control system according to claim 1, special
Sign is, includes that information includes: start bit, data field, stop bits, treatment region, answers area in the data packet；
Data field includes the data bit of order and address；
Area is answered, for identification the status information of monitoring unit, monitoring unit generates the pulse of different in width in answering area, to
Controller transmits status information.
3. a kind of two lines bus digital communication method of fire alarm and linkage control system according to claim 2, special
Sign is that the controller sends two line communication data frame to monitoring unit, carries out inspection to monitoring unit and publication is controlled
System operation, specifically includes:
Controller sends two line communication data frame with binary digit symbol technology, carries out inspection to monitoring unit and publication is controlled
System operation；
Wherein, the type of the communications data frame includes emergency inquiry frame, status inquiry frame and control operation frame.
4. a kind of two lines bus digital communication method of fire alarm and linkage control system according to claim 3, special
Sign is that the controller sends two line communication data frame with binary digit symbol technology, patrols to monitoring unit
Inspection and publication control operation, specifically include:
The alert event of monitoring unit is to inquire data frame by emergency to upload；
After monitoring unit receives emergency inquiry data frame, actively gives and respond, controller is determined by segmented request order
Sector address where to the monitoring unit, retransmits the status inquiry command in section, to lock the alarm thing of the monitoring unit address
Part.
5. a kind of two lines bus digital communication method of fire alarm and linkage control system according to claim 4, special
Sign is that the controller sends two line communication data frame with binary digit symbol technology, patrols to monitoring unit
Inspection and publication control operation, further includes:
The common event and state of monitoring unit, are uploaded to controller when being by receiving status inquiry data frame；
When there is the control opened, closed to interlocking equipment operation, controller preferentially sends control operation data frame, accordingly
Unit give and respond in its answer area, illustrate to complete operational order.
6. a kind of two lines bus digital communication method of fire alarm and linkage control system according to claim 5, special
Sign is that the controller sends two line communication data frame with binary digit symbol technology, patrols to monitoring unit
In inspection and publication control operation, controller sends the specific steps packet of two line communication data frame with binary digit symbol technology
It includes:
Controller to alarm bus out-put supply signal；
Control operation is judged whether there is, if so, sending data frame and handling answer event.
If not controlling operation, judge whether to urgent query time；
If reaching urgent query time, step is executed: sending data frame and handle answer event；
If not reaching urgent query time, judge whether to the status inquiry time；
If reaching the status inquiry time, step is executed: sending data frame and handle answer event.
7. a kind of two lines bus digital communication method of fire alarm and linkage control system according to claim 6, special
Sign is that the monitoring unit generates the pulse of different in width in answering area, transmits status information to controller, realizes double
To data interaction communicate the step of in specifically include:
Monitoring unit judges whether to receive control operation data frame；
If so, judging whether is to carry out operation control to this unit, if so, executing step after carrying out processing operation to this unit:
The pulse that electric current generates different in width is extracted answering area, transmits status information to controller.
8. a kind of two lines bus digital communication method of fire alarm and linkage control system according to claim 7, special
Sign is that the monitoring unit judged whether after the step of receiving control operation data frame further include:
If not receiving control operation data frame, monitoring unit judges whether to receive emergency inquiry data frame；
If so, judging whether there is emergency, if there is emergency, the pulse that electric current generates different in width is extracted answering area,
Status information is transmitted to controller.
9. a kind of two lines bus digital communication method of fire alarm and linkage control system according to claim 8, special
Sign is that the monitoring unit judged whether after the step of receiving emergency inquiry data frame further include:
If not receiving emergency inquiry data frame, judge whether to receive status inquiry frame；
If receiving status inquiry frame, judge whether status inquiry frame is the state for inquiring this unit, if not receiving status inquiry
Frame executes step: preparation receives data frame again；
If this unit, step is executed: extracting the pulse that electric current generates different in width answering area, to controller transmitting state letter
Breath；If not this unit, executes step: preparation receives data frame again.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910543145.9A CN110136410A (en) | 2019-06-21 | 2019-06-21 | A kind of two lines bus digital communication method of fire alarm and linkage control system |
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| CN201910543145.9A CN110136410A (en) | 2019-06-21 | 2019-06-21 | A kind of two lines bus digital communication method of fire alarm and linkage control system |
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| CN114501185A (en) * | 2022-01-27 | 2022-05-13 | 浙江华消科技有限公司 | Control method and device for fire acousto-optic alarm and electronic equipment |
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