CN201072587Y - Fire disaster distributed monitoring network based on RS232 and RS485 bus - Google Patents
Fire disaster distributed monitoring network based on RS232 and RS485 bus Download PDFInfo
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- CN201072587Y CN201072587Y CNU2007201112404U CN200720111240U CN201072587Y CN 201072587 Y CN201072587 Y CN 201072587Y CN U2007201112404 U CNU2007201112404 U CN U2007201112404U CN 200720111240 U CN200720111240 U CN 200720111240U CN 201072587 Y CN201072587 Y CN 201072587Y
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Abstract
The utility model discloses a fire collecting-distributing type monitoring network based on RS232 and RS 485 buses, which consists of a lower computer alarming controller and an upper computer managing platform (namely centralized control computer). Each lower computer alarming controller is connected with a bus control equipment through physical layer twisted-pair of four RS485 buses, each monitoring bus can mostly be connected with 128 lower computer alarming controllers, the bus control equipment switches RS485 physical signal into RS232 physical signal and then is connected with the centralized control computer. The lower computer alarming controller receives detection signal of common fire alarming detector and electrical operation state signal. The upper computer centralized control computer can receive and display detection signal of each lower computer alarming controller and emit control commands. The utility model has the advantages of wide control space range, strong stability, easy access of the alarming controller, etc.
Description
Technical field
The utility model relates to building fire alarm technique field, a kind of fire collecting and distributing type monitor network based on RS232 and RS485 bus.
Background technology
The monitoring work of strengthening fire is the electric fire disaster monitoring work of the most important thing of numerous risk prevention instrumentses, especially large space building, and its substantial connection also is the focus of present domestic fire-fighting domain research to the people's lives and property safety.In addition, be furnished with a large amount of power leads and signal wire in computer house etc. is equipped with the place of a large amount of delicate electrical equipment, it is extremely important to preventing fire to monitor the unusual intensification of circuit; In documents and materials such as library, archives storage place, the early stage strick precaution of fire can be avoided great economic loss with warning.The fire hazard monitoring alarm technique is the technology that is related to people's life and property safety.At present, the automatic alarm monitoring networking technology of each big neutral Urban Fires is being changed large space building and important place (as government bodies, telecommunication department etc.) widespread use in becomes new growth point in people life property safety's favourable guarantee and the security against fire warning field.
At present fire monitoring system mostly adopt administrative center's control module directly and alarm detector communicate, adopt the mode of centralized management, because administrative center's system load is limited in one's ability, make that be linked into whole warning system inner sensor quantity compares lessly, has limited the ability to large-scale building fire hazard monitoring to a certain extent; In the monitor network structure that adopts collecting and distributing type, existing slave computer alarm controller processing and Presentation Function are limited, can not the complete demonstration with the detection information of alarm detector.With regard to function, lack at present and can reflect common fire information (as temperature, smokescope), the fire hazard monitoring network that can reflect electrical equipment and electric wiring operational factor again, so fire alarm centre management software still can not be made real-time demonstration and effectively fire-fighting action at common fire and electrical fire signal simultaneously.
Summary of the invention
The purpose of this utility model is to provide a kind of fire collecting and distributing type monitor network based on RS232 and RS485 bus.
The technical scheme that its technical matters that solves the utility model adopts is:
Comprise bus control equipment, be distributed in the slave computer and the host computer administrative center of all kinds of alarm detector fire alarms control of many of different spaces usefulness; In the single-chip microcomputer IC1 chip in the bus control equipment, finishing the IC3 chip that RS-485 signal and TTL signal transform by 2 I/O mouths and 4 be used to respectively is connected, the delivery outlet of each IC3 chip is connected with many slave computers that are distributed in different spaces, other 2 I/O mouths are connected with an end that is used to finish the IC2 chip that RS-232 signal and TTL signal transform through optic coupling element, and the other end of IC2 chip is connected with host computer administrative center industrial computer serial ports.
Described IC1 chip is the PIC16F877 single-chip microcomputer, with two I/O mouth output of RB, RD control signal, wherein 8 passages of RB mouth are used to finish the IC3 chip controls end that RS-485 signal and TTL signal transform and link to each other with 4, and two passages of RD2 and RD3 link to each other with the control end of opto-coupler chip.
Described IC3 chip is the MAX487 chip, and the control end RE of this chip links to each other with the I/O mouth of controller IC 1 with the DE end, and serial line interface receiving end DI links to each other with the serial line interface of IC1 chip with transmitting terminal RO; Chip IC 3 chips are output as two twisted-pair feeders of A, B, are connected with the RS485 interface of slave computer alarm controller; The IC3 chip has 4, and connected mode is identical.
Described opto-coupler chip is two 6N137 chips, and the receiving end of the first optocoupler sheet chip links to each other with the transmitting terminal RS_OUT that is used to finish the IC2 chip that RS-232 signal and TTL signal transform, and transmitting terminal links to each other with the serial line interface receiving end of IC1 chip; The transmitting terminal of second opto-coupler chip links to each other with the receiving end RS_IN of IC2 chip, and receiving end links to each other with the serial line interface transmitting terminal of IC1 chip, and Enable Pin links to each other with I/O mouth D2, the D3 end of IC1 chip.
Described IC2 chip is the MAX232 chip, RS232 signal output pin T2_OUT is connected with host computer serial line interface receiving end R, Transistor-Transistor Logic level signal input pin T2_IN is connected with the transmit port of second opto-coupler chip, Transistor-Transistor Logic level signal output pin R2_OUT is connected with the receiving end of first opto-coupler chip, and RS232 signal input pin R2_OUT is connected with host computer serial line interface transmitting terminal T.
Described slave computer is the embedded system of core with the ARM single-chip microcomputer, by A/D sample port and digital I/O mouth be used to respond to hygrosensor, the smokescope detector of common fire, and the electric current, voltage and the leakage current sensor that are used to monitor electrical fire link to each other; With LCD display and touch-screen interface as man-machine interaction; Carry out monitor data issue and control command acceptance by the RS-485 bus.
Described host computer is an industrial computer, installs to receive and handle the software that slave computer sends information, sends order and receives return message by the industrial computer serial line interface.
The utility model is compared with technical background, and the beneficial effect that has is: adopt the RS-485 twisted-pair feeder to carry out distant signal and transmit, signal stabilization is good, and antijamming capability is strong; Can monitor and report to the police the common fire of 400 different spaces and electrical fire, host computer and slave computer all have the good man-machine interaction interface, are convenient to operation.
Description of drawings
Fig. 1 is a structural principle block diagram of the present utility model.
Fig. 2 is an IC3 chip pin line graph.
Fig. 3 is an IC2 chip pin line graph.
Fig. 4 is an opto-coupler chip pin line graph.
Fig. 5 is bus control equipment control single chip computer IC1 pin assignments figure.
Fig. 6 is the bus translation circuit theory diagrams.
Embodiment
As shown in Figure 1, the utility model comprises bus control equipment, is distributed in many of different spaces slave computer and the host computer administrative centers that insert all kinds of alarm detectors; In the single-chip microcomputer IC1 chip in the bus control equipment, finishing the IC3 chip that RS-485 signal and TTL signal transform by 2 I/O mouths and 4 be used to respectively is connected, the delivery outlet of each IC3 chip is connected with many slave computers that are distributed in different spaces, other 2 I/O mouths are connected with an end that is used to finish the IC2 chip that RS-232 signal and TTL signal transform through optic coupling element, and the other end of IC2 chip is connected with host computer administrative center industrial computer serial ports.
As shown in Figure 5, described IC1 chip is the PIC16F877 single-chip microcomputer, with two I/O mouth output of RB, RD control signal, wherein 8 passages of RB mouth are used to finish the IC3 chip controls end that RS-485 signal and TTL signal transform and link to each other with 4, and two passages of RD2 and RD3 link to each other with the control end of opto-coupler chip.
As shown in Figure 2, described IC3 chip is the MAX487 chip, and the control end RE of this chip links to each other with the I/O mouth of controller IC 1 with the DE end, and serial line interface receiving end DI links to each other with the serial line interface of IC1 chip with transmitting terminal RO; The IC3 chip is output as two twisted-pair feeders of A, B, is connected with the RS485 interface of slave computer alarm controller; The IC3 chip has 4, and connected mode is identical.
As shown in Figure 4, described opto-coupler chip is two 6N137 chips, the receiving end of the first optocoupler sheet chip links to each other with the transmitting terminal RS_OUT that is used to finish the IC2 chip that RS-232 signal and TTL signal transform, and transmitting terminal links to each other with the serial line interface receiving end of IC1 chip; The transmitting terminal of second opto-coupler chip links to each other with the receiving end RS_IN of IC2 chip, and receiving end links to each other with the serial line interface transmitting terminal of IC1 chip, and Enable Pin links to each other with I/O mouth D2, the D3 end of IC1 chip.
As shown in Figure 3, described IC2 chip is the MAX232 chip, RS232 signal output pin T2OUT is connected with host computer serial line interface receiving end R, Transistor-Transistor Logic level signal input pin T2IN is connected with the transmit port of second opto-coupler chip, Transistor-Transistor Logic level signal output pin R2_OUT is connected with the receiving end of first opto-coupler chip, and RS232 signal input pin R2_OUT is connected with host computer serial line interface transmitting terminal T.
Described slave computer is the embedded system of core with the ARM single-chip microcomputer, by A/D sample port and digital I/O mouth be used to respond to hygrosensor, the smokescope detector of common fire, and the electric current, voltage and the leakage current sensor that are used to monitor electrical fire link to each other; With LCD display and touch-screen interface as man-machine interaction; Carry out monitor data issue and control command acceptance by the RS-485 bus.
Described host computer is an industrial computer, installs to receive and handle the software that slave computer sends information, sends order and receives return message by the industrial computer serial line interface.
Slave computer is the embedded signal acquisition control system based on arm processor, is distributed in different spaces in the monitoring building.The slave computer alarm controller directly links to each other with the electrical operation state detector with common detector for fire alarm system, real-time collecting temperature, common fire detector monitor signal of smog and electric current, voltage, the detection signal of electrical operation state detectors such as leakage current, slave computer is preserved the alarm limit of each parameter index, when monitoring parameter surpasses alarm limit, slave computer will send actuation of an alarm, to the alerting signal of sending of common fire and electrical fire, the slave computer alarm controller can receive the steering order of host computer centralized control computing machine in real time and carry out corresponding operation according to instruction simultaneously.Each slave computer receives the monitoring parameter of common detector for fire alarm system and electric state detector by A/D sample port and digital port, inserts monitor network by the RS-485 interface concurrent, separately finishes monitoring alarm work.
Host computer administrative center adopts industrial computer as the centralized control computing machine, by the administrative center software of installation with industrial computer, sends control command to each slave computer alarm controller, can receive and show simultaneously the monitoring information of each slave computer alarm controller.Administrative center's software can also be preserved automatically to the record of reporting to the police simultaneously.Host computer administrative center communicates by industrial computer serial ports and monitor network.
Bus control equipment is responsible for connecting the host computer administrative center and the slave computer alarm controller of monitor network, its circuit theory diagrams as shown in Figure 6, core parts are processor IC1, it is the PIC16F877 single-chip microcomputer, 4 RS485 conversion chip IC3, i.e. MAX487,1 RS232 conversion chip IC2, be MAX232, and 2 opto-coupler chip 6N137.Bus control equipment is responsible for the conversion between RS 1 and the RS-232 signal, and can receive the order that host computer sends, and after judging call allocation is arrived different monitoring circuits.Bus control equipment externally has 5 docking ports, wherein, 4 docking ports are drawn interface for the RS-485 signal, be connected with each the slave computer RS-485 interface on 4 monitoring circuits, finish being connected between slave computer and the bus control equipment, another docking port is drawn interface for the RS-232 signal, is connected with the serial ports of administrative center industrial computer, finishes being connected between host computer and the bus control equipment.
Bus control equipment carries out the conversion of RS-485 differential signal and Transistor-Transistor Logic level signal with IC3, as shown in Figure 2, A, B end is the RS485 differential signal line, be used for communicating with each slave computer, the RO end links to each other with the serial ports input pin of single-chip microcomputer IC1 for signal sending end, the DI end links to each other with the serial ports output pin of single-chip microcomputer IC1 for signal input part.
Finish the conversion of RS-232 differential signal and Transistor-Transistor Logic level signal with IC2, as shown in Figure 3, RS232 signal input pin is connected with industrial computer serial line interface transmitting terminal, Transistor-Transistor Logic level signal output pin is connected with the receiving port of opto-coupler chip 11, Transistor-Transistor Logic level signal input pin is connected with the transmitting terminal of opto-coupler chip 12, and RS232 signal output pin is connected with industrial computer serial line interface receiving end.The external capacitor chip reduces external disturbance with filtering.
Because the duty of IC2 can not directly be controlled by IC1, therefore, adopt the communications intermediary of 2 opto-coupler chip 6N137 as IC2 and controller IC 1, as shown in Figure 4, I/O mouth D2, the D3 of IC1 link to each other with the Enable Pin of 2 opto-coupler chips, duty to opto-coupler chip is controlled, thereby indirectly IC2 is controlled.The receiving end of first opto-coupler chip links to each other with the transmitting terminal of IC2 chip, transmitting terminal links to each other with the serial line interface receiving end of IC1 chip, the transmitting terminal of second opto-coupler chip links to each other with the receiving end of IC2 chip, receiving end links to each other with the serial line interface transmitting terminal of IC1 chip, and Enable Pin links to each other with D2, the D3 end of IC1.IC1 controls transfer process by intelligent chip, IC1 is the PIC16F877 single-chip microcomputer, pin as shown in Figure 5, its I/O mouth B0～B7 is connected with the control end of IC3, I/O mouth D2, D3 are connected with the Enable Pin EN of opto-coupler chip 6N137, serial ports input end IN is connected with the transmitting terminal of 4 IC3 and opto-coupler chip, and serial ports output terminal OUT is connected with the receiving end of 4 IC3 and opto-coupler chip.IC1 receives the order that is sent by host computer, after judging, by the I/O mouth IC2 and opto-coupler chip is sent control signal, thus the different communication line of gating.
Claims (7)
1. fire collecting and distributing type monitor network based on RS232 and RS485 bus is characterized in that: comprise bus control equipment, be distributed in many slave computer and host computer administrative centers that insert all kinds of alarm detectors of different spaces; In the single-chip microcomputer IC1 chip in the bus control equipment, finishing the IC3 chip that RS-485 signal and TTL signal transform by 2 I/O mouths and 4 be used to respectively is connected, the delivery outlet of each IC3 chip is connected with many slave computers that are distributed in different spaces, other 2 I/O mouths are connected with an end that is used to finish the IC2 chip that RS-232 signal and TTL signal transform through optic coupling element, and the other end of IC2 chip is connected with host computer administrative center industrial computer serial ports.
2. a kind of fire collecting and distributing type monitor network according to claim 1 based on RS232 and RS485 bus, it is characterized in that: described IC1 chip is the PIC16F877 single-chip microcomputer, with two I/O mouth output of RB, RD control signal, wherein 8 passages of RB mouth are used to finish the IC3 chip controls end that RS-485 signal and TTL signal transform and link to each other with 4, and two passages of RD2 and RD3 link to each other with the control end of opto-coupler chip.
3. a kind of fire collecting and distributing type monitor network according to claim 1 based on RS232 and RS485 bus, it is characterized in that: described IC3 chip is the MAX487 chip, the control end RE of this chip links to each other with the I/O mouth of controller IC 1 with the DE end, and serial line interface receiving end DI links to each other with the serial line interface of IC1 chip with transmitting terminal RO; The IC3 chip is output as two twisted-pair feeders of A, B, is connected with the RS485 interface of slave computer alarm controller; The IC3 chip has 4, and connected mode is identical.
4. a kind of fire collecting and distributing type monitor network according to claim 1 based on RS232 and RS485 bus, it is characterized in that: described opto-coupler chip is two 6N137 chips, the receiving end of the first optocoupler sheet chip links to each other with the transmitting terminal RS_OUT that is used to finish the IC2 chip that RS-232 signal and TTL signal transform, and transmitting terminal links to each other with the serial line interface receiving end of IC1 chip; The transmitting terminal of second opto-coupler chip links to each other with the receiving end RS_IN of IC2 chip, and receiving end links to each other with the serial line interface transmitting terminal of IC1 chip, and Enable Pin links to each other with I/O mouth D2, the D3 end of IC1 chip.
5. a kind of fire collecting and distributing type monitor network according to claim 1 based on RS232 and RS485 bus, it is characterized in that: described IC2 chip is the MAX232 chip, RS232 signal output pin T2_OUT is connected with host computer serial line interface receiving end R, Transistor-Transistor Logic level signal input pin T2_IN is connected with the transmit port of second opto-coupler chip, Transistor-Transistor Logic level signal output pin R2_OUT is connected with the receiving end of first opto-coupler chip, and RS232 signal input pin R2_OUT is connected with host computer serial line interface transmitting terminal T.
6. a kind of fire collecting and distributing type monitor network according to claim 1 based on RS232 and RS485 bus, it is characterized in that: described slave computer is the embedded system of core with the ARM single-chip microcomputer, by A/D sample port and digital I/O mouth be used to respond to hygrosensor, the smokescope detector of common fire, and the electric current, voltage and the leakage current sensor that are used to monitor electrical fire link to each other; With LCD display and touch-screen interface as man-machine interaction; Carry out monitor data issue and control command acceptance by the RS-485 bus.
7. a kind of fire collecting and distributing type monitor network according to claim 1 based on RS232 and RS485 bus, it is characterized in that: described host computer is an industrial computer, install and receive and handle the software that slave computer sends information, send order and receive return message by the industrial computer serial line interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201112404U CN201072587Y (en) | 2007-07-03 | 2007-07-03 | Fire disaster distributed monitoring network based on RS232 and RS485 bus |
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2007201112404U CN201072587Y (en) | 2007-07-03 | 2007-07-03 | Fire disaster distributed monitoring network based on RS232 and RS485 bus |
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| CN201072587Y true CN201072587Y (en) | 2008-06-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108273224A (en) * | 2018-01-15 | 2018-07-13 | 天津七科技有限公司 | Intelligent radio is built and electric fire monitoring device and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108273224A (en) * | 2018-01-15 | 2018-07-13 | 天津七科技有限公司 | Intelligent radio is built and electric fire monitoring device and system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080611 |