CN202502595U - Multi-functional electrical fire monitoring detector - Google Patents
Multi-functional electrical fire monitoring detector Download PDFInfo
- Publication number
- CN202502595U CN202502595U CN2012200945093U CN201220094509U CN202502595U CN 202502595 U CN202502595 U CN 202502595U CN 2012200945093 U CN2012200945093 U CN 2012200945093U CN 201220094509 U CN201220094509 U CN 201220094509U CN 202502595 U CN202502595 U CN 202502595U
- Authority
- CN
- China
- Prior art keywords
- circuit
- mcu
- relay
- electricity flow
- flow valuve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Alarm Systems (AREA)
- Fire Alarms (AREA)
Abstract
The utility model discloses a multi-functional electrical fire monitoring detector, which comprises a temperature signal collection circuit, a remained current signal collection circuit, a three-phase current signal collection circuit, a signal modulation circuit, a microprogrammed control unit (MCU), a key control circuit and an external circuit and can connected to a digital mutual inducer through a communication bus, wherein the temperature signal collection circuit collects the temperature values of electric wires and cables; the remained current signal collection circuit collects the remained current valves of the cables; the three-phase current signal collection circuit collects the three-phase current values of the electric wires and cables; after the signal modulation by the signal modulation circuit, the collected temperature values, the remained current valves and the three-phase current values are sent to the MCU for data processing; and the data processed by the MCU controls the external circuit with the control signal input from the key control circuit. The monitoring detector disclosed by the utility model can realize multi-point monitoring and centralized management of an electrical fire and minimize the electrical fire hazard.
Description
Technical field
The utility model relates to a kind of detector for electric fire protection, and the monitoring detector of the electrical fire of digital mutual inductor is monitored, also can be connected to particularly a kind of multiloop of realizing.
Background technology
In electric system, the fire that causes owing to consumer improper use, equipment failure, distribution line overload, line insulation wear out, short circuit etc. increases day by day.Present electrical fire probe functionality is single, generally can only or can only come electrical fire is monitored through the temperature of monitoring electric wire through the residual current in the monitoring electric wire; Present fire detection detector monitors method is simple, the loop is single; It is not high to detect degree of accuracy; And if when adopting the method for residual current in the monitoring electric wire; Can only gather the residual electricity flow valuve through analog mutual inductor, adopt analog transducer signal transmission range near, limit the usable range of monitoring detector.
The utility model content
The utility model purpose: the purpose of the utility model is in order to solve the problems of the prior art, a kind of electrical fire detector of realizing the multiloop monitoring, can connecting digital mutual inductor to be provided.
Technical scheme: in order to realize above purpose; The utility model provides a kind of multifunctional electric fire monitoring detector, comprising: temperature signal collection circuit, residual current signal acquisition circuit, three-phase current signal Acquisition Circuit, signal conditioning circuit, MCU, key control circuit and external circuit; Said temperature signal collection circuit is gathered the electric wire temperature value, the residual current signal acquisition circuit is gathered the residual electricity flow valuve in the cable, the three-phase electricity flow valuve in the three-phase current signal Acquisition Circuit collection electric wire; Again the above-mentioned temperature value that collects, residual electricity flow valuve and three-phase electricity flow valuve are sent into signal conditioning circuit and carry out sending into MCU behind the signal condition and carry out data processing, the data after MCU handles are controlled external circuit with the control signal of key control circuit input.
External circuit comprises described in the utility model: warning circuit; Said warning circuit comprises: light-emitting diode display, LED light, hummer; Said MCU is through I/O mouth control warning circuit; After one or more data value surpasses the alarm threshold value that is provided with in the warning circuit in detecting residual current, temperature, three-phase electricity flow valuve; Light-emitting diode display display alarm information in the warning circuit; The LED alarm lamp is lighted, the while buzzer call, and chimes of doom can be closed through manual mode.
External circuit comprises described in the utility model: the digital communication circuit; The digital communication circuit is the RS485 interface, adopts the Modbus-RTU agreement; Said digital communication circuit is connected with MCU, and this digital communication circuit comprises a up going port, a down going port; Data such as the residual electricity flow valuve after up going port can be handled MCU, temperature value, three-phase electricity flow valuve and/or alerting signal are sent to the Surveillance center that is connected with said detector for electric fire protection; Said down going port connects digital mutual inductor; This digital mutual inductor is connected with the residual current signal acquisition circuit, and said residual current signal acquisition circuit directly directly is sent to the down going port of the residual electricity flow valuve that records through said digital mutual inductor and digital communication circuit among the MCU and handles.
External circuit comprises described in the utility model: the relay output control circuit; Said relay output control circuit is connected with MCU; After said warning circuit sent alerting signal, the isolating switch that the control of relay output control circuit is attached thereto broke off the respective electrical loop, thoroughly eliminates electric disaster hidden-trouble by the relay output control circuit of the I/O mouth of said MCU control.
Comprise in the above-mentioned said relay output control circuit: a not gate, a triode, a diode, a relay and a voltage dependent resistor (VDR); From the relay control signal of said MCU output through not gate reverse after; Send into transistor base; By the disconnection of triode drive controlling relay, closure; The diode that is connected with relay one side is used for suppressing relay coil and breaks off the inverse peak voltage that moment produces, and the voltage dependent resistor (VDR) that is connected in the relay opposite side is used to absorb the surge voltage that produces when relay contact switches.
The signal acquisition circuit of residual current described in the utility model connects respectively: analog mutual inductor and digital mutual inductor; When using analog mutual inductor to gather the residual current signal, the residual electricity flow valuve inserts the residual current signal acquisition circuit through analog mutual inductor; After the sampling of residual current signal acquisition circuit, filtering, amplification, handle the back through MCU again and show.When using digital mutual inductor to gather the residual current signal; Digital mutual inductor is connected with the digital communication circuit; Digital mutual inductor with the residual electricity flow valuve through the direct teletransmission of digital communication circuit to MCU; Adopt the digital mutual inductor transmission range can reach 1200m, improved the transmission range of residual current signal greatly, and the signal transmission distance of analog mutual inductor generally is no more than 20m.
Beneficial effect: the advantage of the utility model is following:
1, the utility model can be monitored electrical fire through the temperature value of monitoring electric wire, residual electricity flow valuve and the three-phase electricity flow valuve in the electric wire simultaneously; It no longer is the monitoring in single loop; But realized multiloop monitoring; Improved the degree of accuracy of electrical fire monitoring, the probability of having avoided electrical fire to take place.
2, externally comprised the relay output control circuit in the circuit in the utility model; This relay output control circuit is connected with isolating switch; After warning circuit sends alerting signal; The isolating switch that the control of relay output control circuit is attached thereto breaks off the respective electrical loop, thoroughly eliminates electric disaster hidden-trouble, has improved security.
3, comprised digital telecommunication circuit in the external circuit in the utility model; Digital mutual inductor in conjunction with said residual current signal acquisition circuit connection; The residual electricity flow valuve of the cable circuit of the gathering down going port through said digital mutual inductor and digital communication circuit directly is sent among the MCU handles; Transmission range can reach 1200m, has improved the transmission range of residual current signal greatly.
Description of drawings
Fig. 1 is the FB(flow block) of the utility model.
Fig. 2 is the circuit diagram of residual current signal acquisition circuit in the utility model.
Fig. 3 is the circuit diagram of temperature signal collection circuit in the utility model.
Fig. 4 is the circuit diagram of three-phase current signal Acquisition Circuit in the utility model.
Fig. 5 is the circuit diagram of the utility model repeat circuit output control circuit.
Fig. 6 is the circuit diagram of digital communication circuit in the utility model.
Fig. 7 is the circuit diagram of warning circuit in the utility model.
Fig. 8 is the circuit diagram of MCU in the utility model.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment; Further illustrate the utility model; Should understand these embodiment only be used to the utility model is described and be not used in the restriction the utility model scope; After reading the utility model, those skilled in the art all fall within the application's accompanying claims institute restricted portion to the modification of the various equivalent form of values of the utility model.
Embodiment
A kind of detector for electric fire protection as shown in the figure comprises: temperature signal collection circuit, residual current signal acquisition circuit, three-phase current signal Acquisition Circuit, signal conditioning circuit, MCU, key control circuit and external circuit; Said external circuit comprises: warning circuit, digital communication circuit, relay output control circuit; Said warning circuit comprises: light-emitting diode display, LED light, hummer; Said residual current signal acquisition circuit connects analog mutual inductor and digital mutual inductor; Said relay output control circuit connects isolating switch; Said digital communication circuit comprises: a up going port, a down going port.
The principle of work of the said multifunctional electric fire monitoring detector of present embodiment is following:
Temperature signal collection circuit described in the embodiment is gathered the electric wire temperature value, the residual current signal acquisition circuit is gathered the residual electricity flow valuve in the electric wire, the three-phase electricity flow valuve in the three-phase current signal Acquisition Circuit collection electric wire; Again the above-mentioned temperature value that collects, residual electricity flow valuve and three-phase electricity flow valuve are sent into signal conditioning circuit and carry out sending into MCU behind the signal condition and carry out data processing, the data after MCU handles are controlled external circuit with the control signal of key control circuit input.Residual electricity flow valuve, temperature value, three-phase electricity flow valuve and/or alerting signal after said digital communication circuit up going port can be handled MCU are sent to the Surveillance center that is connected with said multifunctional electric fire monitoring detector; Said down going port connects digital mutual inductor; This digital mutual inductor is connected with the residual current signal acquisition circuit, and said residual current signal acquisition circuit directly directly is sent to the down going port of the residual electricity flow valuve that records through said digital mutual inductor and digital communication circuit among the MCU and handles.
After one or more data value surpasses alarm threshold value in detecting residual current, temperature, three-phase electricity flow valuve in the said monitoring detector,, light the LED alarm lamp and control buzzer call by the light-emitting diode display display alarm information.After said warning circuit sent alerting signal, the isolating switch that the relay output control circuit control of the I/O mouth of said MCU control is attached thereto broke off the respective electrical loop, thoroughly eliminates electric disaster hidden-trouble.
MCU is a primary processor with 32 single-chip microcomputer U1 in the present embodiment, adds reset circuit, crystal oscillator, and clock circuit and ferroelectric memory circuit constitute core processing circuit (like Fig. 7).The relay output control circuit comprises: a not gate U2, triode Q2, diode D2, relay K 3, voltage dependent resistor (VDR) RV3; MCU exports a relay control signal; By the disconnection of triode drive controlling relay, closure; Diode is used for suppressing relay coil and breaks off the inverse peak voltage that moment produces, and voltage dependent resistor (VDR) is used to absorb the surge voltage (as shown in Figure 5) that produces when relay contact switches.Said digital communication circuit is the RS485 interface; Adopt the Modbus-RTU agreement; Form with special-purpose communication chip U7, constitute holding circuit, whole digital communication circuit is protected by rectifier bridge BR2, TVS pipe VD1, resettable fuse F1, F2; Guarantee the reliability of entire circuit, in the digital communication circuit up going port with the data upload in the said detector for electric fire protection to Surveillance center; Down going port is used for connecting digital mutual inductor (as shown in Figure 6).
Connect analog mutual inductor and digital mutual inductor simultaneously at residue residual current signal acquisition circuit in the present embodiment.
When using analog mutual inductor; The residual electricity flow valuve inserts MCU through residual current transformer, and the signal that residual current transformer obtains is sampled by R60, C26, C27 filtering; R8, R49, U3A form amplifying circuit; C42 is to the power decoupling of amplifier, and the residual current signal carries out externally showing (as shown in Figure 1) after the data processing through MCU after over-sampling, filtering, amplification again.
When using digital mutual inductor, digital mutual inductor is connected with the digital communication circuit, digital mutual inductor with the residual electricity flow valuve through the direct teletransmission of digital communication circuit to MCU.
Claims (5)
1. a multifunctional electric fire monitoring detector is characterized in that: comprising: temperature signal collection circuit, residual current signal acquisition circuit, three-phase current signal Acquisition Circuit, signal conditioning circuit, MCU, key control circuit and external circuit;
Said temperature signal collection circuit is gathered temperature value, the residual current signal acquisition circuit of electric wire and is gathered the residual electricity flow valuve in the cable, the three-phase electricity flow valuve in the three-phase current signal Acquisition Circuit collection electric wire; Again the above-mentioned temperature value that collects, residual electricity flow valuve and three-phase electricity flow valuve are sent into signal conditioning circuit and carry out sending into MCU behind the signal condition and carry out data processing, the data after MCU handles are with controlling external circuit from the control signal of key control circuit input.
2. a kind of multifunctional electric fire monitoring detector according to claim 1, it is characterized in that: said external circuit comprises: warning circuit; Said warning circuit comprises: light-emitting diode display, LED light, hummer; Said MCU is through I/O mouth control warning circuit; After one or more data value surpasses the alarm threshold value that is provided with in the warning circuit in detecting residual current, temperature, three-phase electricity flow valuve; Light-emitting diode display display alarm information in the warning circuit; The LED alarm lamp is lighted, simultaneously buzzer call.
3. a kind of multifunctional electric fire monitoring detector according to claim 2, it is characterized in that: said external circuit comprises: the digital communication circuit; Said digital communication circuit is connected with MCU, and this digital communication circuit comprises a up going port, a down going port; Residual electricity flow valuve, temperature value, three-phase electricity flow valuve and/or alerting signal after said up going port can be handled MCU are sent to the Surveillance center that is connected with said detector for electric fire protection; Said down going port connects digital mutual inductor; This digital mutual inductor is connected with the residual current signal acquisition circuit, and said residual current signal acquisition circuit directly directly is sent to the down going port of the residual electricity flow valuve that records through said digital mutual inductor and digital communication circuit among the MCU and handles.
4. a kind of multifunctional electric fire monitoring detector according to claim 2, it is characterized in that: said external circuit comprises: the relay output control circuit; Said relay output control circuit is connected with MCU; After said warning circuit sent alerting signal, the isolating switch that control is attached thereto broke off the respective electrical loop, thoroughly eliminates electric disaster hidden-trouble by the relay output control circuit of the I/O mouth of said MCU control.
5. a kind of multifunctional electric fire monitoring detector according to claim 4 is characterized in that: comprise in the said relay output control circuit: a not gate, a triode, a diode, a relay and a voltage dependent resistor (VDR); From the relay control signal of said MCU output through not gate reverse after; Send into transistor base; By the disconnection of triode drive controlling relay, closure; The diode that is connected with relay one side is used for suppressing relay coil and breaks off the inverse peak voltage that moment produces, and the voltage dependent resistor (VDR) that is connected in the relay opposite side is used to absorb the surge voltage that produces when relay contact switches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200945093U CN202502595U (en) | 2012-03-14 | 2012-03-14 | Multi-functional electrical fire monitoring detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200945093U CN202502595U (en) | 2012-03-14 | 2012-03-14 | Multi-functional electrical fire monitoring detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202502595U true CN202502595U (en) | 2012-10-24 |
Family
ID=47039204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200945093U Expired - Lifetime CN202502595U (en) | 2012-03-14 | 2012-03-14 | Multi-functional electrical fire monitoring detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202502595U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104993450A (en) * | 2015-07-22 | 2015-10-21 | 济南市市政工程设计研究院（集团）有限责任公司 | Residual current protection device and residual current protection method for road lighting |
| CN105427505A (en) * | 2014-09-10 | 2016-03-23 | 朱庆 | Fire monitoring and alarming system |
| CN105513253A (en) * | 2016-03-03 | 2016-04-20 | 国网山东省电力公司郓城县供电公司 | Low-voltage distribution cabinet fire alarm system |
| CN106327775A (en) * | 2016-08-28 | 2017-01-11 | 桂林市晶准测控技术有限公司 | Electrical fire monitoring system based on cloud service |
| CN106324531A (en) * | 2016-08-30 | 2017-01-11 | 江苏海航电气科技有限公司 | Electrical fire and fire-fighting power monitoring system |
| CN107738966A (en) * | 2017-12-04 | 2018-02-27 | 北京北安时代电梯安装工程有限公司 | A kind of lift car intellectual monitoring autoalarm and method |
| CN108288345A (en) * | 2018-02-27 | 2018-07-17 | 鲁东大学 | Internet of things type electric fire alarm |
| CN109188955A (en) * | 2018-08-15 | 2019-01-11 | 江苏安科瑞电器制造有限公司 | A kind of cloud remote supervisory and control(ling) equipment |
-
2012
- 2012-03-14 CN CN2012200945093U patent/CN202502595U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105427505A (en) * | 2014-09-10 | 2016-03-23 | 朱庆 | Fire monitoring and alarming system |
| CN104993450A (en) * | 2015-07-22 | 2015-10-21 | 济南市市政工程设计研究院（集团）有限责任公司 | Residual current protection device and residual current protection method for road lighting |
| CN104993450B (en) * | 2015-07-22 | 2018-08-21 | 济南市市政工程设计研究院（集团）有限责任公司 | A kind of road lighting Aftercurrent protecting equipment and method |
| CN105513253A (en) * | 2016-03-03 | 2016-04-20 | 国网山东省电力公司郓城县供电公司 | Low-voltage distribution cabinet fire alarm system |
| CN106327775A (en) * | 2016-08-28 | 2017-01-11 | 桂林市晶准测控技术有限公司 | Electrical fire monitoring system based on cloud service |
| CN106324531A (en) * | 2016-08-30 | 2017-01-11 | 江苏海航电气科技有限公司 | Electrical fire and fire-fighting power monitoring system |
| CN107738966A (en) * | 2017-12-04 | 2018-02-27 | 北京北安时代电梯安装工程有限公司 | A kind of lift car intellectual monitoring autoalarm and method |
| CN107738966B (en) * | 2017-12-04 | 2023-08-25 | 北京北安时代创新设备安装工程有限公司 | Intelligent monitoring automatic alarm device and method for elevator car |
| CN108288345A (en) * | 2018-02-27 | 2018-07-17 | 鲁东大学 | Internet of things type electric fire alarm |
| CN109188955A (en) * | 2018-08-15 | 2019-01-11 | 江苏安科瑞电器制造有限公司 | A kind of cloud remote supervisory and control(ling) equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202502595U (en) | Multi-functional electrical fire monitoring detector | |
| CN210224712U (en) | Low-voltage distribution box based on Internet of things | |
| CN207398896U (en) | A kind of charging equipment of tape jam detection | |
| CN202004426U (en) | Low-voltage line protection circuit | |
| CN204167883U (en) | A kind of 10kV line short fault microcomputer protective relay device | |
| CN201975769U (en) | Low-voltage power-distribution neutral line monitoring device | |
| CN204536414U (en) | A kind of low-voltage network residual current monitoring system | |
| CN211015815U (en) | Electric fire prevention protection terminal | |
| CN112767637A (en) | Intelligent digital fire-fighting electrical fire monitoring system | |
| CN203025294U (en) | Portable transformer substation grounding line state monitoring device | |
| CN202230148U (en) | Transformer operation condition monitor intelligent electronic device (IED) | |
| CN201993871U (en) | Novel fire detector | |
| CN205141831U (en) | Multi -functional joining in marriage becomes terminal based on ARM | |
| CN204807634U (en) | Controlling record appearance is listened to electric wiring safety based on internet of things | |
| CN104655922A (en) | Vicious load judging system based on voltage and current sampling data | |
| CN203645302U (en) | Input voltage monitoring circuit and POS terminal | |
| CN203243121U (en) | Transformer load intelligent management system | |
| CN109142932A (en) | A kind of monitoring of isolated neutral power supply system and protection system | |
| CN205121793U (en) | Safety monitoring device of family | |
| CN218585190U (en) | Wisdom voltage monitoring protection system | |
| CN103268108A (en) | Intelligent transformer load management system | |
| CN219535710U (en) | Internet of things breaker for load monitoring and load monitoring system | |
| CN207743691U (en) | A kind of Current Transformer Secondary overvoltage protection applied to distribution system | |
| CN204832276U (en) | Electric energy meter with temperature -sensing function | |
| CN203502536U (en) | Switch cabinet protection circuit broken line monitoring device |
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: 20121024 |