CN207264545U - Combined electric appliance fire disaster monitoring probe - Google Patents

Combined electric appliance fire disaster monitoring probe Download PDF

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Publication number
CN207264545U
CN207264545U CN201721368926.1U CN201721368926U CN207264545U CN 207264545 U CN207264545 U CN 207264545U CN 201721368926 U CN201721368926 U CN 201721368926U CN 207264545 U CN207264545 U CN 207264545U
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China
Prior art keywords
circuit
operational amplifier
electric appliance
fire disaster
master controller
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Application number
CN201721368926.1U
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Chinese (zh)
Inventor
施资
郑国灵
李月松
张欣
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Beijing Beiyuan Anda Electronics Co Ltd
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Beijing Beiyuan Anda Electronics Co Ltd
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Priority to CN201721368926.1U priority Critical patent/CN207264545U/en
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Abstract

The utility model provides a kind of Combined electric appliance fire disaster monitoring probe, including master controller, power circuit, CAN bus circuit, infrared receiving circuit, 4 acquisition circuits being connected in parallel, key circuit, indicator light buzzer and indicator light buzzer drive circuit.Advantage is:Combined electric appliance fire disaster monitoring probe has 4 monitoring circuits, the degree of regulation of every monitoring loop is 1mA, also, each selectable monitoring temperature of monitoring circuit or remaining leakage current, so as to improve the fire hazard monitoring accuracy of detector for electric fire protection and comprehensive;In addition, having the advantages that circuit design is simple and cost is low, use can be widely popularized.

Description

Combined electric appliance fire disaster monitoring probe
Technical field
The utility model belongs to fire hazard monitoring technical field, and in particular to a kind of Combined electric appliance fire disaster monitoring probe.
Background technology
With the progress of society, electrical applications are more and more extensive, and the fire caused by electric is also more and more therewith, According to the Fire-Fighting Bureau under the Ministry of Public Security to fire statistics over the years, in building fire by electric fault and caused by fire all fire First place is listed in because in.The reason for triggering electrical fire mainly has short circuit, electric leakage, overload, loose contact etc..It is especially public at some Place altogether, due to densely populated place, it is particularly important that electrical safety is even more.
The monitoring function of existing detector for electric fire protection is single, and same monitoring loop usually only has temperature monitoring Function only has electric leakage monitoring function, so as to reduce the flexibility of detector for electric fire protection and comprehensive.
Utility model content
In view of the defects existing in the prior art, the utility model provides a kind of Combined electric appliance fire disaster monitoring probe, can Effectively solve the above problems.
The technical solution adopted in the utility model is as follows:
The utility model provides a kind of Combined electric appliance fire disaster monitoring probe, including master controller, power circuit, CAN Bus circuit, infrared receiving circuit, 4 acquisition circuits being connected in parallel, key circuit, indicator light buzzer and indicator light bee Ring device drive circuit;
The master controller respectively with the power circuit, CAN bus circuit, the infrared receiving circuit, described Acquisition circuit is connected with the key circuit;The master controller passes through the indicator light buzzer drive circuit and the instruction Lamp buzzer connects;
Wherein, each acquisition circuit includes:For the outside to connect with temperature sensor or residual current transformer Interface, the output terminal of the external interface are connected with the cathode of the 1st operational amplifier and the anode of the 2nd operational amplifier respectively; 1st reference power supply is connected to the anode of the 1st operational amplifier by the 1st reference power supply bleeder circuit;2nd reference power supply passes through 2 reference power supply bleeder circuits are connected to the cathode of the 2nd operational amplifier;3rd reference power supply after upper resistance by being connected to MOS 2nd pin of pipe;3rd pin of metal-oxide-semiconductor is connected respectively to the cathode of the 1st operational amplifier and the anode of the 2nd operational amplifier; 1st pin of metal-oxide-semiconductor is connected to the control terminal of MCU master controllers by resistance;In addition, the output terminal of the 1st operational amplifier and The output terminal of 2nd operational amplifier is all connected to the input terminal of MCU master controllers.
Preferably, the master controller uses 9S08DZ60 chips.
Preferably, the power circuit includes:AC220V input interfaces, EMC electromagnetic compatible protectives circuit, AC/DC power supplys Circuit and capacitor filter;The AC220V input interfaces are successively by EMC electromagnetic compatible protectives circuit, AC/DC power supplys electricity Behind road and capacitor filter, the feeder ear of the master controller is connected to.
Preferably, the CAN bus circuit uses the CAN transceiving chips of TJA1051 models.
Preferably, the infrared receiving circuit uses HS0038B infrared receiving terminals.
Combined electric appliance fire disaster monitoring probe provided by the utility model has the following advantages:
Combined electric appliance fire disaster monitoring probe has 4 monitoring circuits, and the degree of regulation of every monitoring loop is 1mA, Also, each selectable monitoring temperature of monitoring circuit or remaining leakage current, so as to improve detector for electric fire protection Fire hazard monitoring accuracy and comprehensive;In addition, having the advantages that circuit design is simple and cost is low, use can be widely popularized.
Brief description of the drawings
Fig. 1 is the structure diagram of Combined electric appliance fire disaster monitoring probe provided by the utility model;
Fig. 2 is the circuit diagram of acquisition circuit provided by the utility model.
Embodiment
In order to which the technical problem, technical solution and the beneficial effect that are solved the utility model are more clearly understood, below With reference to accompanying drawings and embodiments, the utility model is further elaborated.It should be appreciated that specific implementation described herein Example only to explain the utility model, is not used to limit the utility model.
The utility model provides a kind of Combined electric appliance fire disaster monitoring probe, with reference to figure 1, including master controller, power supply Circuit, CAN bus circuit, infrared receiving circuit, 4 acquisition circuits being connected in parallel, key circuit, indicator light buzzer and Indicator light buzzer drive circuit;
Master controller connects with power circuit, CAN bus circuit, infrared receiving circuit, acquisition circuit and key circuit respectively Connect;Master controller is connected by indicator light buzzer drive circuit with indicator light buzzer;
Its operation principle is:4 monitoring loops are set altogether, and every monitoring loop both can be with monitors environment temperature, can also Leakage current is monitored, when the electrical leakage of environment temperature or test line exceedes alarm setting value, detector can be incited somebody to action by CAN bus Alarm signal is transferred to upper monitoring equipment, so as to effectively prevent electrically fiery because of caused by electric leakage or environment temperature rise Calamity.
Describe in detail below to each device that the utility model is related to:
Master controller:For the processing of detector internal data, instruction transmission.
Power circuit:For alternating current 220V electricity to be converted to direct current 5V electricity, so as to provide power supply for whole detector.
CAN bus circuit:It is connected for detector with the communication of upper monitoring equipment, completes data, the transmission of instruction.
Infrared receiving circuit:It is connected with master controller, for receiving exterior infrared signal.By the infrared signal transmission of reception To master controller, so as to complete the parameter setting of detector.
Temperature signal collection circuit:One end is connected with external temperature sensor, and the other end is connected with master controller.For adopting Collect temperature signal, the temperature signal of processing is transferred to master controller.
Electric leakage signal Acquisition Circuit:One end is connected with external redundant current transformer, and the other end is connected with master controller.With In collection leakage current signal, by the leakage current signal transmission of processing to master controller.
Indicator light buzzer:It is connected with master controller, for the state instruction of detector, concurrently speaks, light alarm.
Key circuit:It is connected with master controller, for detector noise reduction.
Master controller uses 9S08DZ60 chips, respectively with power circuit, CAN bus circuit, infrared receiving circuit, temperature Signal acquisition circuit, electric leakage signal Acquisition Circuit, key circuit, the connection of indicator light buzzer.
Power circuit is inputted using AC220V, by EMC electromagnetic compatible protectives, is input to AC/DC power modules, will be exchanged 220V electricity is converted to direct current 5V electricity, and by capacitor filtering, power supply is provided for whole module.
CAN bus circuit, one end are connected with master controller, and the other end is connected with upper location supervisory.By CAN bus come Complete the data transfer of detector and upper monitoring equipment room.CAN bus circuit uses TJA1051CAN transceiving chips, ADUM1201ARZ chips are isolated.
Infrared receiving circuit uses HS0038B infrared receiving terminals, when there is infrared signal input in outside, infrared receiving circuit Data can be parsed by master controller, so as to complete parameter setting by the infrared signal transmission received to master controller.Therefore, In complicated site environment, it can be adjusted by infrared addressing device come the parameter setting of complete twin detector so as to avoid scene The contact high voltage cable of examination personnel closely.
Temperature signal collection circuit and electric leakage signal Acquisition Circuit are led to using MPC6002 operational amplifiers, detector The input signal of collection external temperature sensor or current transformer is crossed, is transferred to master controller.Detector shares 4 and gathers back Road, every circuit both can also monitor leakage current with monitors environment temperature, but both can only select one to be monitored.
With reference to figure 2, each acquisition circuit includes:Outside for connecting with temperature sensor or residual current transformer connects Mouthful, the output terminal of external interface is connected with the cathode of the 1st operational amplifier and the anode of the 2nd operational amplifier respectively;1st benchmark Power supply is connected to the anode of the 1st operational amplifier by the 1st reference power supply bleeder circuit;2nd reference power supply passes through the 2nd benchmark electricity Source bleeder circuit is connected to the cathode of the 2nd operational amplifier;3rd reference power supply after upper resistance by being connected to the 2nd of metal-oxide-semiconductor Pin;3rd pin of metal-oxide-semiconductor is connected respectively to the cathode of the 1st operational amplifier and the anode of the 2nd operational amplifier;Metal-oxide-semiconductor 1st pin is connected to the control terminal of MCU master controllers by resistance;In addition, output terminal and the 2nd computing of the 1st operational amplifier The output terminal of amplifier is all connected to the input terminal of MCU master controllers.
Its operation principle is:
When the external interface of detector be coupled be temperature sensor when, 1 foot of the CH feet of MCU master controllers to metal-oxide-semiconductor Q Low level signal is sent, makes 2 feet and the conducting of 3 feet of metal-oxide-semiconductor Q, reference power supply Vref access monitoring loops, temperature signal is in DC4V Upper pull-up voltage under input the 1st operational amplifier cathode, reference power supply DC4V is becoming 0.365V after partial pressure, and inputs To the anode of the 1st operational amplifier, the 1st operational amplifier output TIN, that is, temperature acquisition signal, are transmitted to MCU master 1 foot of controller, completes temperature monitoring.
When the external interface of detector be coupled be current transformer when, 1 foot of the CH feet of MCU master controllers to metal-oxide-semiconductor Q High level signal is sent, 2 feet and 3 feet for making metal-oxide-semiconductor Q disconnect, and current signal directly inputs the anode of the 2nd operational amplifier, base Quasi- power supply DC4V is becoming 0.365V after partial pressure, and inputs to the cathode of the 2nd operational amplifier, and the 2nd operational amplifier is defeated Go out VIN, that is, current acquisition signal, be transmitted to 2 feet of MCU master controllers, complete electric leakage monitoring
Because temperature sensor and current transformer are all connected on an input terminal, detector can't automatic distinguishing be Temperature signal or current signal, when input terminal mating be temperature sensor when, detector is arranged to temperature Type, at this moment DC4V benchmark access acquisition circuit, and the 1st operational amplifier, the 2nd operational amplifier can export TIN, VIN respectively, but due to setting For temperature Type, 1 foot of MCU master controllers receives the TIN signals of the 1st operational amplifier output, but MCU master controllers at this time 2 feet do not receive the 2nd operational amplifier output VIN signals.Conversely, when input terminal mating be residual current transformer when, Detector needs to be arranged to current type, and at this moment DC4V benchmark will not access acquisition circuit, and the 1st operational amplifier, the 2nd computing are put Big device still can all export TIN, VIN, but since setting is current type, 2 feet of MCU master controllers receive the 2nd computing and put The VIN signals of big device output, but 1 foot of MCU master controllers does not receive the VIN signals of the 1st operational amplifier output at this time.
It can be seen from the above that for each acquisition circuit, temperature sensor and current transformer are all connected on an input terminal, MCU master controllers are realized the collection of temperature or electric current, so as to simplify circuit structure, are reduced by the control to metal-oxide-semiconductor break-make Cost.
Combined electric appliance fire disaster monitoring probe provided by the utility model has the following advantages:
Combined electric appliance fire disaster monitoring probe has 4 monitoring circuits, and the degree of regulation of every monitoring loop is 1mA, Also, each selectable monitoring temperature of monitoring circuit or remaining leakage current, so as to improve detector for electric fire protection Fire hazard monitoring accuracy and comprehensive;In addition, having the advantages that circuit design is simple and cost is low, use can be widely popularized.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and Retouching should also regard the scope of protection of the utility model.

Claims (5)

1. a kind of Combined electric appliance fire disaster monitoring probe, it is characterised in that including master controller, power circuit, CAN bus electricity Road, infrared receiving circuit, 4 acquisition circuits being connected in parallel, key circuit, indicator light buzzer and indicator light buzzer drive Dynamic circuit;
The master controller respectively with the power circuit, the CAN bus circuit, the infrared receiving circuit, the collection Circuit is connected with the key circuit;The master controller passes through the indicator light buzzer drive circuit and the indicator light bee The device that rings connects;
Wherein, each acquisition circuit includes:For the external interface to connect with temperature sensor or residual current transformer, The output terminal of the external interface is connected with the cathode of the 1st operational amplifier and the anode of the 2nd operational amplifier respectively;1st base Quasi- power supply is connected to the anode of the 1st operational amplifier by the 1st reference power supply bleeder circuit;2nd reference power supply passes through the 2nd benchmark Power supply bleeder circuit is connected to the cathode of the 2nd operational amplifier;3rd reference power supply after upper resistance by being connected to metal-oxide-semiconductor 2nd pin;3rd pin of metal-oxide-semiconductor is connected respectively to the cathode of the 1st operational amplifier and the anode of the 2nd operational amplifier;MOS 1st pin of pipe is connected to the control terminal of MCU master controllers by resistance;In addition, the output terminal and the 2nd of the 1st operational amplifier The output terminal of operational amplifier is all connected to the input terminal of MCU master controllers.
2. Combined electric appliance fire disaster monitoring probe according to claim 1, it is characterised in that the master controller uses 9S08DZ60 chips.
3. Combined electric appliance fire disaster monitoring probe according to claim 1, it is characterised in that the power circuit bag Include:AC220V input interfaces, EMC electromagnetic compatible protectives circuit, AC/DC power circuits and capacitor filter;The AC220V Input interface after EMC electromagnetic compatible protectives circuit, AC/DC power circuits and capacitor filter, is connected to described successively The feeder ear of master controller.
4. Combined electric appliance fire disaster monitoring probe according to claim 1, it is characterised in that the CAN bus circuit Using the CAN transceiving chips of TJA1051 models.
5. Combined electric appliance fire disaster monitoring probe according to claim 1, it is characterised in that the infrared receiving circuit Using HS0038B infrared receiving terminals.
CN201721368926.1U 2017-10-23 2017-10-23 Combined electric appliance fire disaster monitoring probe Active CN207264545U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721368926.1U CN207264545U (en) 2017-10-23 2017-10-23 Combined electric appliance fire disaster monitoring probe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721368926.1U CN207264545U (en) 2017-10-23 2017-10-23 Combined electric appliance fire disaster monitoring probe

Publications (1)

Publication Number Publication Date
CN207264545U true CN207264545U (en) 2018-04-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721368926.1U Active CN207264545U (en) 2017-10-23 2017-10-23 Combined electric appliance fire disaster monitoring probe

Country Status (1)

Country Link
CN (1) CN207264545U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110660188A (en) * 2019-09-30 2020-01-07 四川赛科安全技术有限公司 Temperature and residual current mixed detection and identification method for electrical fire detector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110660188A (en) * 2019-09-30 2020-01-07 四川赛科安全技术有限公司 Temperature and residual current mixed detection and identification method for electrical fire detector
CN110660188B (en) * 2019-09-30 2021-07-23 四川赛科安全技术有限公司 Temperature and residual current mixed detection and identification method for electrical fire detector

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