CN204596059U - A kind of electric leakage, fire supervising device based on RS485 bus - Google Patents

A kind of electric leakage, fire supervising device based on RS485 bus Download PDF

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Publication number
CN204596059U
CN204596059U CN201520184202.6U CN201520184202U CN204596059U CN 204596059 U CN204596059 U CN 204596059U CN 201520184202 U CN201520184202 U CN 201520184202U CN 204596059 U CN204596059 U CN 204596059U
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CN
China
Prior art keywords
bus
child node
fire
node controller
transformer
Prior art date
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CN201520184202.6U
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Chinese (zh)
Inventor
王志国
李磊
曲仁秀
金惠敏
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安徽工程大学
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Priority to CN201520184202.6U priority Critical patent/CN204596059U/en
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Publication of CN204596059U publication Critical patent/CN204596059U/en

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Abstract

The utility model discloses a kind of electric leakage, fire supervising device based on RS485 bus, relate to numerical control field, comprise data acquisition module, child node controller, RS485 bus, master node control, LCD display module, key-press module, alarm module, water injection valve and host computer, described data acquisition module comprises temperature sensor, smoke transducer, voltage transformer (VT), current transformer, zero-sequence transformer and peripheral circuit, described temperature sensor and smoke transducer are used for the signal in receiving chamber, described current transformer can monitor the electric current of distribution system, complete overload, the detection of short-circuit function, the voltage of Monitoring Line is responsible for by described voltage transformer (VT), power and power levels, described zero-sequence transformer can detect electric leakage, the utility model can be accurate, detect the condition of a fire rapidly, and can combined operation.

Description

A kind of electric leakage, fire supervising device based on RS485 bus
Technical field
The utility model relates to numerical control field, is specifically related to a kind of electric leakage, fire supervising device based on RS485 bus.
Background technology
In recent years, school dormitory and home dwelling fire failure occurred again and again, in order to ensure the safety of life and property of people, judged by Detection Techniques the possibility that fire occurs, and fire preventing ahead of time has important practical significance.Intelligent fire-proofing early warning system with the raw building of fire-prone for monitored object, in conjunction with detection technique, computer technology, field bus technique design, carry out prevention to fire condition to judge and automatic alarm, when fire occurs, again can according to the particular location of the condition of a fire, the corresponding fire fighting device of real-time starting is put out a fire, and reduces the harm that fire brings to greatest extent.But the current fire alarm system of China also exists many problems, 1, false alarm rate is high.2, because of electric wire overload, cannot monitor heat, cigarette in time in the short time, when sensor detects, fire has occurred to unmanageable stage, and fire cannot be guaranteed to strangle in rudiment.3, the current fire alarm system of China and building safety-protection system major part are each independently system, the combined operation of fire fighting device and other equipment with control poor operability.So, design and aly can detect the condition of a fire accurately and rapidly and the product of combined operation can become problem demanding prompt solution.
Utility model content
The purpose of this utility model is to provide a kind of can detect the condition of a fire and can the electric leakage, fire supervising device based on RS485 bus of combined operation accurately and rapidly.
Based on an electric leakage, fire supervising device for RS485 bus, it is characterized in that, comprising: data acquisition module, child node controller, RS485 bus, master node control, LCD display module, key-press module, alarm module, water injection valve and host computer, wherein, described host computer, LCD display module, key-press module is bi-directionally connected with master node control respectively, described master node control, child node controller is bi-directionally connected with RS485 bus respectively, and described child node controller is connected with water injection valve, and described data acquisition module and child node controller are bi-directionally connected, and described data acquisition module comprises temperature sensor, smoke transducer, voltage transformer (VT), current transformer, zero-sequence transformer and peripheral circuit, described temperature sensor and smoke transducer are used for the signal in receiving chamber, and described current transformer can monitor the electric current of distribution system, completes overload, the detection of short-circuit function, the voltage of Monitoring Line is responsible for by described voltage transformer (VT), power and power levels, described zero-sequence transformer can detect electric leakage.
Preferably, the information of collection is sent to child node controller by described data acquisition module, described child node controller is connected with RS485 bus transmission circuit, information is delivered to master node control by RS485 bus transmission circuit and RS485 bus by described child node controller, the data received are carried out processing and are sent to LCD display module and host computer by described master node control, described host computer is to master node control sending controling instruction, after master node control process, convert the data layout of RS485 bus to, each child node controller is delivered to by RS485 bus transmission circuit and RS485 bus, thus complete electric leakage, fire monitoring.
Preferably, described child node controller and master node control all adopt STC89C51 chip, its major function has been the initialization of RS485 bus controller and the conversion of data layout, and described master node control sends instruction by host computer or key-press module to RS485 bus and controls the unlatching that child node controller drives water injection valve.
Preferably, described child node controller is connected with AD converter, the model of described current transformer is HCT206, the model of described voltage transformer (VT) is HPT205N, the electric current collected and voltage signal are delivered to the AD converter that model is ADS7864 by peripheral circuit by described current transformer and voltage transformer (VT), and electric current and voltage analog signal are converted to digital signal input child node controller and process by described AD converter.
Preferably, described RS485 bus transmission circuit adopts RSM485CT serial ports transponder chip, be responsible for the data communication between child node controller and RS485 bus, the position that fire signal is occurred by RS485 bus transmission circuit and RS485 bus by described child node controller, state, fire plant information and escape state are sent to master controller, described master controller communicates to notify building monitoring center with host computer by serial communication interface, child node controller passes through data analysis simultaneously, voice or LCD display is utilized to notify escape route and fire plant information state.
The utility model has the advantage of: 1, the utility model adopts RS485 bus distributed control thought, construct a kind of high speed, high-precision, scalability is strong, electric leakage, fire supervising device that reliability is high;
2, when fire occurs, the information such as position, state, fire plant information and escape state of fire signal as occurred is sent to master controller by RS485 bus by sub-controller, master controller communicates to notify building monitoring center with host computer by serial communication interface, a child node passes through data analysis simultaneously, utilize voice or the timely informing optimum escape route of LCD display and fire plant information state, the chaotic scene after fire generation can be reduced as far as possible, saved the escape of people and the time of fire fighting;
3, the utility model is integrated with fire monitoring, the provisional monitor that leaks electricity, controls the on-the-spot water injection valve disaster relief, notices the multiple function such as escape route, and practical value is high.
Accompanying drawing explanation
Fig. 1 is the framed structure schematic diagram of a kind of electric leakage, fire supervising device based on RS485 bus described in the utility model.
Fig. 2 is a kind of controller of the electric leakage, fire supervising device based on RS485 bus described in the utility model and the connection diagram of RS485 bus transmission circuit.
Fig. 3 is that the voltage transformer (VT) summation current transformer of a kind of electric leakage, fire supervising device based on RS485 bus described in the utility model gathers conversion circuit.
Fig. 4 is the short-circuit voltage electric current A/D convertor circuit of a kind of electric leakage, fire supervising device based on RS485 bus described in the utility model.
Embodiment
The technological means realized for making the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with embodiment, setting forth the utility model further.
As shown in Figure 1, a kind of electric leakage, fire supervising device based on RS485 bus of the present embodiment, comprising: data acquisition module, child node controller, RS485 bus, master node control, LCD display module, key-press module, alarm module, water injection valve and host computer.Described data acquisition module comprises temperature sensor, smoke transducer, voltage transformer (VT), current transformer, zero-sequence transformer and peripheral circuit composition, signal in described temperature sensor and smoke transducer receiving chamber, the electric current of described current transformer monitoring distribution system, complete overload, the detection of short-circuit function, the voltage of Monitoring Line is responsible for by described voltage transformer (VT), the detection of power and electric energy, described zero-sequence transformer is responsible for detection of electrical leakage, the information of collection is sent to child node controller by described data acquisition module, and send master node control by the RS485 bus transmission circuit that is connected with child node controller and RS485, described master node control delivers to LCD display module and host computer after the data received being processed, described host computer is to master node control sending controling instruction, after described master node control processes, convert the data layout of applicable RS485 bus to, each child node controller is delivered to by RS485 bus transmission circuit and RS485 bus, thus complete electric leakage, fire monitoring.
It should be noted that, described child node controller and master node control are the control carriers of whole communication system, for gathering indoor signal, the communication function of RS485 bus can be realized, complete the conversion of data layout, described child node controller and master node control all adopt STC89C51 chip.
In the present embodiment, the model of described current transformer is HCT206, the model of described voltage transformer (VT) is HPT205N, described current transformer is for monitoring the electric current of distribution system, complete the detection of overload, short-circuit function, the situation of the voltage of voltage transformer (VT) primary responsibility Monitoring Line, power and electric energy.
As shown in Figure 2, in the present embodiment, TXD with RXD of described child node controller and DE end hold with TXD and RXD of RSM485CT and DE respectively and is connected, and A, B of RSM485CT hold the AB line of connection RS485 bus respectively.
As shown in Figure 3, in the present embodiment, the model of described current transformer is HCT206, and the model of described voltage transformer (VT) is HPT205N, the output terminal I of this conversion circuit a, I b, I c, U a, u b, U cbe connected with CHA1+, CHB1+, CHC1+, CHA0+, CHB0+, CHC0+ pin of AD converter ADS7864 respectively.
Fig. 4 is short circuit electric current and voltage A/D convertor circuit in the utility model embodiment, described child node controller is connected with AD converter, the electric current collected and voltage signal to be delivered to after model is the AD converter of ADS7864 by peripheral circuit by described current transformer and voltage transformer (VT), and electric current and voltage analog signal are converted to 8 position digital signals output to child node controller P0-P7 mouth by DB0-DB7 by described AD converter.
The foregoing is only preferred implementation of the present utility model, protection domain of the present utility model is not limited in above-mentioned embodiment, and every technical scheme belonging to the utility model principle all belongs to protection domain of the present utility model.For a person skilled in the art, some improvements and modifications of carrying out under the prerequisite not departing from principle of the present utility model, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims (5)

1., based on an electric leakage, fire supervising device for RS485 bus, it is characterized in that, comprising: data acquisition module, child node controller, RS485 bus, master node control, LCD display module, key-press module, alarm module, water injection valve and host computer, wherein, described host computer, LCD display module, key-press module is bi-directionally connected with master node control respectively, described master node control, child node controller is bi-directionally connected with RS485 bus respectively, and described child node controller is connected with water injection valve, and described data acquisition module and child node controller are bi-directionally connected, and described data acquisition module comprises temperature sensor, smoke transducer, voltage transformer (VT), current transformer, zero-sequence transformer and peripheral circuit, described temperature sensor and smoke transducer are used for the signal in receiving chamber, and described current transformer can monitor the electric current of distribution system, completes overload, the detection of short-circuit function, the voltage of Monitoring Line is responsible for by described voltage transformer (VT), power and power levels, described zero-sequence transformer can detect electric leakage.
2. a kind of electric leakage, fire supervising device based on RS485 bus according to claim 1, it is characterized in that: the information of collection is sent to child node controller by described data acquisition module, described child node controller is connected with RS485 bus transmission circuit, information is delivered to master node control by RS485 bus transmission circuit and RS485 bus by described child node controller, the data received are carried out processing and are sent to LCD display module and host computer by described master node control, described host computer is to master node control sending controling instruction, after master node control process, convert the data layout of RS485 bus to, each child node controller is delivered to by RS485 bus transmission circuit and RS485 bus, thus complete electric leakage, fire monitoring.
3. a kind of electric leakage, fire supervising device based on RS485 bus according to claim 1, it is characterized in that: described child node controller and master node control all adopt STC89C51 chip, its major function has been the initialization of RS485 bus controller and the conversion of data layout, and described master node control sends instruction by host computer or key-press module to RS485 bus and controls the unlatching that child node controller drives water injection valve.
4. a kind of electric leakage, fire supervising device based on RS485 bus according to claim 1, it is characterized in that: described child node controller is connected with AD converter, the model of described current transformer is HCT206, the model of described voltage transformer (VT) is HPT205N, the electric current collected and voltage signal are delivered to the AD converter that model is ADS7864 by peripheral circuit by described current transformer and voltage transformer (VT), and electric current and voltage analog signal are converted to digital signal input child node controller and process by described AD converter.
5. a kind of electric leakage, fire supervising device based on RS485 bus according to claim 1, it is characterized in that: described RS485 bus transmission circuit adopts RSM485CT serial ports transponder chip, be responsible for the data communication between child node controller and RS485 bus, the position that fire signal is occurred by RS485 bus transmission circuit and RS485 bus by described child node controller, state, fire plant information and escape state are sent to master controller, described master controller communicates to notify building monitoring center with host computer by serial communication interface, child node controller passes through data analysis simultaneously, voice or LCD display is utilized to notify escape route and fire plant information state.
CN201520184202.6U 2015-03-30 2015-03-30 A kind of electric leakage, fire supervising device based on RS485 bus CN204596059U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105303752A (en) * 2015-11-03 2016-02-03 河南瑞远物联网科技有限公司 Electrical fire monitoring and early warning system based on point type temperature sensing elements
CN106384489A (en) * 2016-09-08 2017-02-08 四川赛科安全技术有限公司 Management divider for realizing loop dilatation of fire alarm control unit
CN108199867A (en) * 2017-12-20 2018-06-22 北京城市系统工程研究中心 A kind of network-building method and data transmission method of wired sensor network
CN108534926A (en) * 2018-04-12 2018-09-14 太原理工大学 For the pressure monitoring device inside road foundation
CN109029748A (en) * 2017-06-10 2018-12-18 北京万览时代网络科技有限公司 High-tension cable temperature detecting alarm system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105303752A (en) * 2015-11-03 2016-02-03 河南瑞远物联网科技有限公司 Electrical fire monitoring and early warning system based on point type temperature sensing elements
CN106384489A (en) * 2016-09-08 2017-02-08 四川赛科安全技术有限公司 Management divider for realizing loop dilatation of fire alarm control unit
CN106384489B (en) * 2016-09-08 2019-01-01 四川赛科安全技术有限公司 For realizing the branching-passage device for tube of fire alarm control unit circuit dilatation
CN109029748A (en) * 2017-06-10 2018-12-18 北京万览时代网络科技有限公司 High-tension cable temperature detecting alarm system
CN108199867A (en) * 2017-12-20 2018-06-22 北京城市系统工程研究中心 A kind of network-building method and data transmission method of wired sensor network
CN108534926A (en) * 2018-04-12 2018-09-14 太原理工大学 For the pressure monitoring device inside road foundation

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Granted publication date: 20150826

Termination date: 20160330