CN201369084Y - Electrical fire monitoring unit - Google Patents
Electrical fire monitoring unit Download PDFInfo
- Publication number
- CN201369084Y CN201369084Y CNU2009200960918U CN200920096091U CN201369084Y CN 201369084 Y CN201369084 Y CN 201369084Y CN U2009200960918 U CNU2009200960918 U CN U2009200960918U CN 200920096091 U CN200920096091 U CN 200920096091U CN 201369084 Y CN201369084 Y CN 201369084Y
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- electric fire
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Abstract
The utility model discloses an electrical fire monitoring unit which comprises a main controller, a power supply circuit, an RS485 communication interface circuit, a keystroke sampling circuit, a liquid crystal display and indicator lamp display part, a clock processing circuit, a sound processing circuit, a temperature alarm output and temperature sampling circuit, and an overcurrent output and creepage alarm output circuit. The electrical fire monitoring unit forms an electrical fire monitoring system together with a plurality of electrical fire monitoring detectors and a superior monitor through an RS485 bus. The monitoring unit transfers signals through the RS485 bus and analyzes through the main controller and can display the status of creepage, overcurrent and temperature of the monitored circuit at real time according to the transferred data and at the same time can record the time and place of the fire and fault. In this way, the electrical fire monitoring unit can manage a plurality of electrical fire monitoring detectors so as to dynamically monitor a plurality of electric circuits in service. In addition, the monitoring unit is safe and reliable, big in monitoring range and long in monitoring distance.
Description
Technical field
The utility model belongs to electronics and electromagnetic technology field, particularly relates to a kind of electric fire disaster monitoring unit that is used to monitor detector for electric fire protection.
Background technology
At present, exist the hidden danger of fire in industry and the folk power supply system always and be accompanied by the generation of disaster, it is threatening human safety of life and property constantly, becomes one of major disaster that influences human ordinary production and existence therefrom.Along with progress of science and technology and growth in the living standard, consuming device and power consumption all grow with each passing day, and have also brought the increase of electrical fire thereupon, so electrical fire has become one of the factor of mainly catching fire in the domestic in recent years emphasis fire.The reason that causes electrical fire mainly contains short circuit, electric leakage, overload, loose contact, light fixture and the electric heating appliance combustible etc. that ignites, wherein the fire that causes by leaking electricity, transshipping is than had more disguise by fire former thereby that cause such as short circuits, normally take place stealthily, and also be difficult to after catching fire find out real reason (being covered by illusions such as short circuits usually), so its harmfulness is also just bigger.Be commonly used in the method that leakage current protection device or electric fire alarm device are installed in the electric wiring at present and come the safety of the protection equipment and the person.Wherein there is following point in the leakage current protection device: this device has only the passive circuit of cutting off the electricity supply of ability when the leakage current in the load circuit surpasses the situation of specified leakage current setting value; guarantee Electrical Safety with this; but it can not play prevention in advance to the fire that is caused by electric electric leakage; and when leakage current surpasses specified leakage current setting value, just cut off the electricity supply and to be unfavorable for the electrical stability of using of whole unit; and only be applicable to the consumer terminal protection, therefore and be not suitable for the protection of whole using electricity system.The control circuit that the electric fire alarm device generally includes current transformer, isolating switch and links to each other with the output terminal of the control input end of isolating switch and current transformer.Its principle of work is that the electric current that utilizes above-mentioned control circuit to monitor with electric line via current transformer changes, thereby determine whether there are faults such as the electric leakage that can cause electrical fire, short circuit, overload with electric line, as existing, control circuit will send control signal so that isolating switch is disconnected, thereby make the electricity consumption line broken circuit that has electric fault, and send alerting signal, and carrying out inspection and maintenance to remind the staff, electric disaster hidden-trouble is eliminated in bud the most at last.But, this electric fire alarm device can only use separately as product independently, and can't use with Related product fire products such as (as:) fire alarm control units networking, therefore to a certain degree, limited further prevention and control, thereby can't fundamentally stop electrical fire electrical fire.
Summary of the invention
In order to address the above problem, the purpose of this utility model is to provide a kind of can concentrating a plurality of detector for electric fire protection to monitor, to realize a plurality of electric fire disaster monitoring unit with the electric line dynamic monitoring.
In order to achieve the above object, the electric fire disaster monitoring unit that provides of the utility model comprises:
Master controller is responsible for the processing and the transmission of data and instruction;
Power circuit, an end links to each other with the 220V AC power, and other parts join in the other end and the monitoring unit, for whole monitoring unit provides direct supply, export one road 24V DC voltage simultaneously and are the power supplies of a plurality of detector for electric fire protection;
RS485 communication interface circuit, an end links to each other with master controller, and the other end joins by RS485 bus and upper monitoring machine and a plurality of detector for electric fire protection, is used for the communication between master controller and upper monitoring machine and the detector for electric fire protection;
The button sample circuit, an end links to each other with master controller, is used for the user and assigns instruction;
Liquid crystal display and pilot lamp display part, an end links to each other with master controller, is used to send visual alarm when alarm condition occurring;
The clock treatment circuit, an end links to each other with master controller, is used to keep the process of master controller, timing simultaneously, and the liquid crystal display displays of controlling on liquid crystal display and the pilot lamp display part by master controller 1 goes out the time;
The sound equipment treatment circuit, an end links to each other with master controller, can start hummer under the control of master controller and send acoustic alarm signal when alarm condition occurring;
Temperature alarming output and temperature sampling circuit, one end links to each other with master controller, the other end and temperature sensor join, be used for sending the signal of temperature sensor collection to master controller after treatment, and when fire occurring, can under the control of master controller, utilize the temperature alarming portion on it to form output;
Overcurrent output and leakage-current alarm output circuit, an end links to each other with master controller, can control when overcurrent occurring at master controller with the situation of electric leakage under the relay controlled of adhesive, to form passive output.
Described master controller adopts the PIC18F6622 chip.
Described temperature alarming output and temperature sampling circuit are made up of gating circuit and ON-OFF control circuit, adopt the CD4017 chip.
Described temperature sensor is the PT100 thermistor.
The electric fire disaster monitoring unit that the utility model provides is by RS485 bus and a plurality of detector for electric fire protection and upper monitoring machine composition electric fire monitoring system, it carries out the transmission of signal by the RS485 bus, analyze by master controller, and can show electric leakage, overcurrent and the temperature regime in monitored loop according to the data in real time that transmits, time and the position that simultaneously can write down breaking out of fire and fault, manage a plurality of detector for electric fire protection with this, thereby realize a plurality of dynamic monitorings with electric line.In addition, this monitoring unit also has safe and reliable, characteristics such as monitoring range big, monitoring distance.
Description of drawings
Fig. 1 constitutes block diagram for the electric fire disaster monitoring unit that the utility model provides.
Fig. 2 is RS485 communication interface circuit theory diagrams in the electric fire disaster monitoring unit shown in Fig. 1.
Embodiment
Below in conjunction with the drawings and specific embodiments the electric fire disaster monitoring unit that the utility model provides is elaborated.
As depicted in figs. 1 and 2, the electric fire disaster monitoring unit that provides of the utility model comprises:
RS485 communication interface circuit 3, one ends link to each other with master controller 1, and the other end joins by RS485 bus and upper monitoring machine and a plurality of detector for electric fire protection, are used for the communication between master controller 1 and upper monitoring machine and the detector for electric fire protection;
Liquid crystal display and pilot lamp display part 5, one ends link to each other with master controller 1, are used to send visual alarm when alarm condition occurring;
Sound equipment treatment circuit 7, one ends link to each other with master controller 1, can start hummer under the control of master controller 1 and send acoustic alarm signal when alarm condition occurring;
Temperature alarming output and temperature sampling circuit 8, one end links to each other with master controller 1, the other end and temperature sensor join, be used for sending the signal of temperature sensor collection to master controller 1 after treatment, and when fire occurring, can under the control of master controller 1, utilize the temperature alarming portion on it to form output;
Overcurrent output and leakage-current alarm output circuit 9, one ends link to each other with master controller 1, and relay that can adhesive is controlled under the control of master controller 1 when occurring overcurrent with the situation of electric leakage is to form passive output.
Described master controller 1 adopts the PIC18F6622 chip.
Described temperature alarming output and temperature sampling circuit 8 are made up of gating circuit and ON-OFF control circuit, adopt the CD4017 chip.
Described temperature sensor is the PT100 thermistor.
As shown in Figure 2, in described RS485 communication interface circuit 3, the TX2 port of master controller 1 connects resistance 1R10, and resistance 1R10 connects triode 1Q2, and triode 1Q2 connects optocoupler 1U2.Optocoupler 1U2 connects communication chip 1U1.The RX2 port of master controller 1 connects resistance 1R14 and connects the 5V power supply.The RX2 port connects optocoupler 1U4, and optocoupler 1U4 connects triode 1Q3, and triode 1Q3 connects resistance 1R11, and resistance 1R11 connects communication chip 1U1.The RSK2 port of master controller 1 connects optocoupler 1U3, and optocoupler 1U3 connects communication chip.The output-parallel rectifier bridge 1D5 of communication chip, rectifier bridge 1D5 connects stabilivolt 1D1 and 1D2.Stabilivolt 1D1 and 1D2 ground connection.The output A2 of communication chip, B2 is a communication interface.Its concrete principle of work is: power supply is handled the power supply of the signal+5V of resistance input as circuit.The reiving/transmitting state of the RSK2 port controlling communication chip MAX487E of master controller 1.RSK2 output high level is transmit status; Output low level is accepting state.This part is the insulation blocking that has optocoupler 1U3, has played the effect of protection master controller 1.And the TX2 of master controller 1 and RX2 port are received and sent messages as PORT COM, and these two ports also all are to have optocoupler 1U2 with being connected of communication chip MAX487E, and 1U4 isolates, and has protective effect equally.The communication information of the control signal of RSK2 and TX2 and RX2 is delivered to communication chip MAX487E later on by buffer circuit and is handled.The terminal that 6,7 pin of communication chip MAX487E are drawn is exactly a communication interface.The front end of communication interface is by rectifier bridge 1D5 rectification ground connection.
When the electric fire disaster monitoring unit that the utility model provides is installed, at first temperature sensor is arranged in the monitored environment, connects the communication interface of electric fire disaster monitoring unit and a plurality of detector for electric fire protection, electric fire disaster monitoring unit and upper monitoring machine simultaneously.Power circuit 2 also can provide one road direct current 24V output during operation except the electricity consumption that total system can be provided.Master controller 1 is to RS485 communicating circuit 3 output control signals and patrol and examine information, and RS485 communicating circuit 3 sends information to detector for electric fire protection after treatment.Detector for electric fire protection feeds back to information, sends back master controller 1 after RS485 communicating circuit 3 is received.Master controller 1 is analyzed the information that obtains, and control liquid crystal display and the 5 demonstration real-time information of pilot lamp display part.When detector for electric fire protection sends electric leakage, overtemperature and overcurrent alerting signal, master controller 1 control liquid crystal display and pilot lamp display part 5 demonstrate warning message and type, control overcurrent output and leakage-current alarm output circuit 9 output switching value signals simultaneously, and control sound equipment treatment circuit 7 sends acoustic alarm signal.
Meanwhile, gating circuit in master controller 1 control temperature alarming output and the temperature sampling circuit 8 is communicated with temperature sensor, the variation of ambient temperature of coming the collecting temperature sensor sensing to arrive by the constant current sampling principle, and be translated into electric signal, flowing to master controller 1 again calculates, extract real temperature data by master controller 1, and judge and deposit, thereby realize monitoring environment temperature.When temperature occurring and surpass to report to the police the situation of the value of setting, master controller 1 control liquid crystal display and pilot lamp display part 5 demonstrate warning message and type, control temperature alarming output and temperature sampling circuit 9 output switching value signals simultaneously, and control sound equipment treatment circuit 7 sends acoustic alarm signal.
In addition, the user can operate by button Acquisition Circuit 4, and this signal is delivered to behind the master controller 1 again by master controller 1 analyzing stored, and control liquid crystal display and pilot lamp display part 5 demonstrate the situation of setting.Clock treatment circuit 6 provides temporal information for master controller 1, so that master controller 1 uses when preserving alarm logging, master controller 1 also can be proofreaied and correct and be provided with clock treatment circuit 6.
Claims (4)
1, a kind of electric fire disaster monitoring unit, it is characterized in that: described electric fire disaster monitoring unit comprises:
Master controller (1) is responsible for the processing and the transmission of data and instruction;
Power circuit (2), an end links to each other with the 220V AC power, and other parts join in the other end and the monitoring unit, for whole monitoring unit provides direct supply, export one road 24V DC voltage simultaneously and are the power supplies of a plurality of detector for electric fire protection;
RS485 communication interface circuit (3), one end links to each other with master controller (1), the other end joins by RS485 bus and upper monitoring machine and a plurality of detector for electric fire protection, is used for the communication between master controller (1) and upper monitoring machine and the detector for electric fire protection;
Button sample circuit (4), an end links to each other with master controller (1), is used for the user and assigns instruction;
Liquid crystal display and pilot lamp display part (5), an end links to each other with master controller (1), is used to send visual alarm when alarm condition occurring;
Clock treatment circuit (6), an end links to each other with master controller (1), is used to keep the process of master controller (1), timing simultaneously, and the liquid crystal display displays of controlling on liquid crystal display and the pilot lamp display part (5) by master controller (1) goes out the time;
Sound equipment treatment circuit (7), an end links to each other with master controller (1), can be under the control of master controller (1) when alarm condition occurring startup hummer and send acoustic alarm signal;
Temperature alarming output and temperature sampling circuit (8), one end links to each other with master controller (1), the other end and temperature sensor join, be used for sending the signal of temperature sensor collection to master controller (1) after treatment, and when fire occurring, can under the control of master controller (1), utilize the temperature alarming portion on it to form output;
Overcurrent output and leakage-current alarm output circuit (9), an end links to each other with master controller (1), and relay that can adhesive is controlled under the control of master controller (1) when occurring overcurrent with the situation of electric leakage is to form passive output.
2, electric fire disaster monitoring according to claim 1 unit is characterized in that: described master controller (1) adopts the PIC18F6622 chip.
3, electric fire disaster monitoring according to claim 1 unit is characterized in that: described temperature alarming output and temperature sampling circuit (8) are made up of gating circuit and ON-OFF control circuit, employing CD4017 chip.
4, electric fire disaster monitoring according to claim 1 unit, it is characterized in that: described temperature sensor is the PT100 thermistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200960918U CN201369084Y (en) | 2009-03-30 | 2009-03-30 | Electrical fire monitoring unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200960918U CN201369084Y (en) | 2009-03-30 | 2009-03-30 | Electrical fire monitoring unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201369084Y true CN201369084Y (en) | 2009-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200960918U Expired - Lifetime CN201369084Y (en) | 2009-03-30 | 2009-03-30 | Electrical fire monitoring unit |
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| CN (1) | CN201369084Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101887621A (en) * | 2010-06-04 | 2010-11-17 | 魏锡秦 | Monitoring protector of electrical fire |
| CN102231222A (en) * | 2011-06-08 | 2011-11-02 | 无锡金桥自动化技术有限公司 | Electric fire monitoring method |
| CN103413394A (en) * | 2013-02-06 | 2013-11-27 | 陕西富集电力科技股份有限公司 | Fire protection detection device |
| CN103685565A (en) * | 2013-12-24 | 2014-03-26 | 施耐德万高（天津）电气设备有限公司 | Intelligent control CAN-bus (Controller Area Network) electric fire monitoring system |
| CN104700546A (en) * | 2015-04-08 | 2015-06-10 | 国家电网公司 | Fire protection intelligent monitor |
| CN104748882A (en) * | 2015-03-16 | 2015-07-01 | 枣庄矿业（集团）有限责任公司柴里煤矿 | Remote alarming device for limit-exceeding temperature of hand bearing |
| CN112735247A (en) * | 2020-12-31 | 2021-04-30 | 杭州拓深科技有限公司 | Electric fire demonstration system supporting polymorphic switching |
| CN113313922A (en) * | 2021-05-31 | 2021-08-27 | 陕西建工智能科技有限公司 | On-line monitoring device and method for line state of automatic fire alarm system in construction site |
| CN113870517A (en) * | 2021-11-03 | 2021-12-31 | 江苏安科瑞电器制造有限公司 | Electrical fire monitoring system and monitoring method thereof |
-
2009
- 2009-03-30 CN CNU2009200960918U patent/CN201369084Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101887621A (en) * | 2010-06-04 | 2010-11-17 | 魏锡秦 | Monitoring protector of electrical fire |
| CN101887621B (en) * | 2010-06-04 | 2013-07-03 | 白云电气集团有限公司 | Monitoring protector of electrical fire |
| CN102231222A (en) * | 2011-06-08 | 2011-11-02 | 无锡金桥自动化技术有限公司 | Electric fire monitoring method |
| CN102231222B (en) * | 2011-06-08 | 2012-08-15 | 无锡金桥自动化技术有限公司 | Electric fire monitoring method |
| CN103413394A (en) * | 2013-02-06 | 2013-11-27 | 陕西富集电力科技股份有限公司 | Fire protection detection device |
| CN103685565A (en) * | 2013-12-24 | 2014-03-26 | 施耐德万高（天津）电气设备有限公司 | Intelligent control CAN-bus (Controller Area Network) electric fire monitoring system |
| CN104748882A (en) * | 2015-03-16 | 2015-07-01 | 枣庄矿业（集团）有限责任公司柴里煤矿 | Remote alarming device for limit-exceeding temperature of hand bearing |
| CN104700546A (en) * | 2015-04-08 | 2015-06-10 | 国家电网公司 | Fire protection intelligent monitor |
| CN112735247A (en) * | 2020-12-31 | 2021-04-30 | 杭州拓深科技有限公司 | Electric fire demonstration system supporting polymorphic switching |
| CN113313922A (en) * | 2021-05-31 | 2021-08-27 | 陕西建工智能科技有限公司 | On-line monitoring device and method for line state of automatic fire alarm system in construction site |
| CN113870517A (en) * | 2021-11-03 | 2021-12-31 | 江苏安科瑞电器制造有限公司 | Electrical fire monitoring system and monitoring method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091223 |