CN201522766U - Electrical fire detector - Google Patents
Electrical fire detector Download PDFInfo
- Publication number
- CN201522766U CN201522766U CN2009202225269U CN200920222526U CN201522766U CN 201522766 U CN201522766 U CN 201522766U CN 2009202225269 U CN2009202225269 U CN 2009202225269U CN 200920222526 U CN200920222526 U CN 200920222526U CN 201522766 U CN201522766 U CN 201522766U
- Authority
- CN
- China
- Prior art keywords
- microprocessor
- way switch
- modulate circuit
- fire detector
- electrical fire
- 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 - Fee Related
Links
Images
Abstract
The utility model provides an electrical fire detector which comprises a first multiple-way switch, a second multiple-way switch, a first conditioning circuit, a second conditioning circuit, a microprocessor, a keyboard, a display circuit and a power supply, wherein the power supply, the keyboard and the display circuit are respectively connected with the microprocessor, the first multiple-way switch and the first conditioning circuit are sequentially connected with the microprocessor, and the second multiple-way switch and the second conditioning circuit are sequentially connected with the microprocessor. The electrical fire detector has the advantages that different detection types and detection channels are set and controlled by the microprocessor through the keyboard and the display circuit, multiple-way input signals are controlled by the multiple-way switches, collection signals of two different sensors of temperature current and residual current are directly accessed, when the detection fields and the detection demand types are different and the number of the channels is uncertain, the electrical fire detector can bring great convenience to a manufacturer and a user. Simultaneously, the setting of the first conditioning circuit and the second conditioning circuit can ensure high reliability of a system.
Description
Technical field
The utility model relates to fire-fighting electric fire disaster monitoring field of detecting, particularly a kind of electrical fire detector.
Background technology
Usually, the electrical fire detector mainly comprises two kinds of detectors, is respectively residual current detector and hygrosensor, all is in order to contain one of technological prevention measure that electrical fire is taked.Country has worked out standard GB 14287.2-2005 (residual-current electrical fire monitoring detector) and GB14287.3-2005 (temp.-measuring type detector for electric fire protection) for this reason, and independently tests as two products.Yet, detecting the scene, detection demand often kind differs, and the way of often required residual current way and temperature detection is uncertain.This produces for on-the-spot installation of product and enterprise and has brought very big inconvenience, if enterprise all takes into account various situations, the product type that then needs will increase.Therefore, use detector for electric fire protection to bring very large inconvenience for manufacturing enterprise and user.
The utility model content
The purpose of this utility model is to overcome above-mentioned defective, provides a kind of and can directly connect residual current and two types of different sensors of temperature and survey a plurality of sense channels, the high and electrical fire detector easy to use of reliability.
For achieving the above object, the electrical fire detector that the utility model provides comprises power supply, also comprises:
Keyboard is used to the instruction that transmits setting, detects and show;
Display circuit is used to show the probe value of detection;
Microprocessor is used to accept described keyboard and instruction is set the passage type of detection is set, and accepts to detect that instruction is switched in multiplexer channel and this passage is detected probe value is sent to described display circuit;
First multi-way switch is used to import the residual current sensor signal and switches the residual current sense channel, and the residual current sensor signal is imported first modulate circuit;
Second multi-way switch is used for input temp sensor signal and switching temperature sense channel, and temperature sensor signal is imported second modulate circuit;
First modulate circuit is used for the residual current sensor signal conditioning and will nurses one's health the back signal conveys to described microprocessor;
Second modulate circuit is used for the temperature sensor signal conditioning and will nurses one's health the back signal conveys to described microprocessor;
Wherein, described power supply, keyboard and display circuit link to each other with described microprocessor respectively, and described first multi-way switch, first modulate circuit link to each other successively with described microprocessor, and described second multi-way switch, second modulate circuit link to each other successively with described microprocessor.
It is that the chip of SI9956 and chip that model is CD4051 constitute that the utility model electrical fire detector, wherein said first multi-way switch adopt model.
It is the chip formation of CD4017 that the utility model electrical fire detector, wherein said second multi-way switch adopt model.
The utility model electrical fire detector, wherein said first modulate circuit and second modulate circuit adopt the operational amplifier chip to constitute.
The advantage and the good effect of the utility model electrical fire detector are: because detector is provided with microprocessor, keyboard and display circuit and first, second multi-way switch control multi-way switch, the direct acquired signal of cut-in temperature and two kinds of different sensors of residual current, and have a plurality of detection channels, adopt the microprocessor setting and control different detection type and detection channels, detecting on-the-spot and detecting demand type and differ, when the way of required residual current way and temperature detection is uncertain, use detector for electric fire protection to bring very large convenience for manufacturing enterprise and user.Simultaneously, the setting of first, second modulate circuit has also realized the raising of reliability.
Be elaborated with reference to accompanying drawing below in conjunction with embodiment.
Description of drawings
Fig. 1 is the block scheme of the utility model electrical fire detector;
Fig. 2 is the circuit diagram of first, second multi-way switch;
Fig. 3 is the circuit diagram of first modulate circuit;
Fig. 4 is the circuit diagram of second modulate circuit.
Embodiment
The implementation of a kind of detector for electric fire protection that the utility model provides, it adopts microprocessor (MCU) control, sends instruction by microprocessor, and the on-off of control multi-way switch is realized different type of detection.
With reference to Fig. 1, the electrical fire detector that the utility model provides comprises first multi-way switch 1, second multi-way switch 2, first modulate circuit 3, second modulate circuit 4, microprocessor 5, keyboard 8 and display circuit 7, power supply 6.Wherein:
First multi-way switch 1 is used to import the residual current sensor signal and switches the residual current sense channel, and the residual current sensor signal is imported first modulate circuit 3;
Second multi-way switch 2 is used for input temp sensor signal and switching temperature sense channel, and temperature sensor signal is imported second modulate circuit 4;
First modulate circuit 3 is used for the residual current sensor signal conditioning and will nurses one's health the back signal conveys to microprocessor 5;
Second modulate circuit 4 is used for the temperature sensor signal conditioning and will nurses one's health the back signal conveys to microprocessor 5;
Wherein, power supply 6, keyboard 8 and display circuit 7 link to each other with microprocessor 5 respectively, and first multi-way switch 1, first modulate circuit 3 link to each other successively with microprocessor 5, and second multi-way switch 2, second modulate circuit 4 link to each other successively with microprocessor 5.
Describe the embodiment of the utility model electrical fire detector in detail below in conjunction with accompanying drawing.
In the embodiment of the utility model electrical fire detector, the type of 8 passages represents that with 8 bits then 8 passage type of detection are 00000000-11111111 with the denotable scope of scale-of-two, and corresponding decimal range is: 0-255.This 8 bit is corresponding respectively with passage 1-8, and promptly 8 bits are represented the type of detection of passage 1 to 8 from left to right respectively.When this position is 0, the type of detection of the passage that expression is corresponding with it is a temperature detection, is expressed as the residual current detection when this position is 1, when binary load being set being 10000010, expression first passage and the 7th passage type of detection are that residual current detects, and rest channels is a temperature detection.As: when 8 scale-of-two by keyboard 8 input are 00000000, represent respectively that from passage 1 to passage 8 are temperature detection, represent that when being input as 11,111,111 8 passages are residual current and detect.
Consult Fig. 2, J1-J8 is an input terminal, is connected to residual current detecting sensor or temperature sensor.
It is the chip U6 formation of CD4051 that first multi-way switch 1 adopts model.CD4051 8 selects a multi-way switch, and microprocessor is the control end of CD4051 chip U6 by the control model, promptly the 9th, 10 realizes different input channels and the common port COM of control CD4051 with 11 pins, and promptly the 3rd pin turns on and off.The network label IN1-IN8 of CD4051 correspondence respectively with the corresponding connection of IN1-IN8 among the input terminal J1-J8, the 3rd pin output of U6 is connected to first modulate circuit 3.
Second multi-way switch 2 is that the chip U5 of CD4017 constitutes jointly by model among the chip U1-U4 that is SI9956 of four models among Fig. 2 and Fig. 4.CD4017 is controlled by microprocessor 5.The output terminal of CD4017 is connected to four SI9956 control gates, SI9956 inside is made of the MOSFET power tube, apply pulse by microprocessor 5 to 14 pins of U5, the PT1-PT8 that realizes control U5 sends control signal, PT1-PT8 is connected to the gate pole input end of the inner MOSFET of U1-U4 respectively, controls the through and off that this input end is realized corresponding MOSFET.IN1-IN8 correspondence among the input terminal J1-J8 is connected to the input end of four SI9956, and the output terminal of four SI9956 is connected to first modulate circuit 3.Because CD4017 can only export one road high pulse signal at every turn, therefore can only there be one road signal to connect at every turn.
Consult Fig. 3, first modulate circuit 3 detects at residual current.Because the residual current sensor is output as the AC sine signal, so through still being AC signal behind first multi-way switch 1, and the input signal of microprocessor 5 need be greater than more than the 0V, therefore needing should the interchange value, be raised to more than the 0V, so the operational amplifier chip among Fig. 3, guarantees that output signal is more than 0V with the addition of a reference signal and input signal.
Consult Fig. 4, second modulate circuit 4 is a signal amplification circuit that is made of the operational amplifier chip.When second multi-way switch 2 is connected, temperature sensor signal is sent to second modulate circuit 4.Detect at temperature sensor, this circuit is resistive type at temperature sensor, and after the detection signal of temperature sensor was nursed one's health through second modulate circuit 4, microprocessor 5 obtained Temperature numerical by measuring voltage numerical value.
Describe the utility model electrical fire detector operation process in detail below in conjunction with accompanying drawing.
The input type and the label of each access detection signal are set earlier.For example, setting type of detection by keyboard 8 is 130, and then binary form is shown 10000010, represents that promptly the 1st passage and the 7th passage type of detection are that residual current detects, and rest channels is a temperature detection.
The course of work of microprocessor 5 is: read above-mentioned setting value, it is 1 or 0 that step-by-step from left to right detects this position, when this position is 1, starts the switch control end of corresponding CD4051, controls this passage conducting.First multi-way switch 1 is accepted instruction, switches a passage in the multiplexer channel that detects residual current, and the detection signal of input residual current sensor also exports first modulate circuit 3 to.Then, the detected signal value after the conditioning of microprocessor 5 reading numerical values, and be converted to corresponding residual electricity flow valuve, deliver to display circuit 7 at last and demonstrate residual current.
When this position was 0, the control end of microprocessor 5 control CD4017 sent control signal by CD4017 and drives corresponding SI9956, feasible corresponding passage conducting.Second multi-way switch 2 is accepted instruction, switches a passage in the multiplexer channel of detected temperatures, and the detection signal of input temp sensor also exports second modulate circuit 4 to.Then, the detected signal value after the conditioning of microprocessor 5 reading numerical values, and be converted to corresponding temperature value, deliver to display circuit 7 at last and demonstrate temperature.
Because microprocessor 5, keyboard 8 and display circuit 7 are known technology, repeat no more here.
The utility model electrical fire detector is set by keyboard and display circuit by microprocessor and is controlled different detection type and detection channels, first, second multi-way switch control multichannel input signal, the direct acquired signal of cut-in temperature and two kinds of different sensors of residual current, and adopt the microprocessor setting and control different detection type and detection channels, detecting on-the-spot and detecting demand type and differ, when the way of required residual current way and temperature detection is uncertain, use detector for electric fire protection to bring very large convenience for manufacturing enterprise and user.Simultaneously, the setting of first, second modulate circuit has also ensured the high reliability of system.
Embodiment recited above is described preferred implementation of the present utility model; be not that design of the present utility model and scope are limited; do not breaking away under the utility model design proposal prerequisite; common engineering technical personnel make the technical solution of the utility model in this area various modification and improvement; all should fall into protection domain of the present utility model; the technology contents that the utility model is asked for protection all is documented in claims.
Claims (4)
1. an electrical fire detector comprises power supply (6), it is characterized in that: also comprise:
Keyboard (8) is used to the instruction that transmits setting, detects and show;
Display circuit (7) is used to show the probe value of detection;
Microprocessor (5) is used to accept described keyboard (8) and instruction is set the passage type of detection is set, and accepts to detect that instruction is switched in multiplexer channel and this passage is detected probe value is sent to described display circuit (7);
First multi-way switch (1) is used to import the residual current sensor signal and switches the residual current sense channel, and the residual current sensor signal is imported first modulate circuit (3);
Second multi-way switch (2) is used for input temp sensor signal and switching temperature sense channel, and temperature sensor signal is imported second modulate circuit (4);
First modulate circuit (3) is used for the residual current sensor signal conditioning and will nurses one's health the back signal conveys to described microprocessor (5);
Second modulate circuit (4) is used for the temperature sensor signal conditioning and will nurses one's health the back signal conveys to described microprocessor (5);
Wherein, described power supply (6), keyboard (8) and display circuit (7) link to each other with described microprocessor (5) respectively, described first multi-way switch (1), first modulate circuit (3) link to each other successively with described microprocessor (5), and described second multi-way switch (2), second modulate circuit (4) link to each other successively with described microprocessor (5).
2. electrical fire detector according to claim 1 is characterized in that: it is that the chip of SI9956 and chip that model is CD4051 constitute that wherein said first multi-way switch (1) adopts model.
3. electrical fire detector according to claim 1 and 2 is characterized in that: it is the chip formation of CD4017 that wherein said second multi-way switch (2) adopts model.
4. electrical fire detector according to claim 3 is characterized in that: wherein said first modulate circuit (3) and second modulate circuit (4) adopt the operational amplifier chip to constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202225269U CN201522766U (en) | 2009-09-15 | 2009-09-15 | Electrical fire detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202225269U CN201522766U (en) | 2009-09-15 | 2009-09-15 | Electrical fire detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201522766U true CN201522766U (en) | 2010-07-07 |
Family
ID=42508943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202225269U Expired - Fee Related CN201522766U (en) | 2009-09-15 | 2009-09-15 | Electrical fire detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201522766U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014056376A1 (en) * | 2012-10-12 | 2014-04-17 | 中兴通讯股份有限公司 | Intelligent monitoring terminal and video monitoring method |
| CN109188063A (en) * | 2018-09-26 | 2019-01-11 | 北京明日电力电子有限公司 | A kind of sensor self-adaptation type composite electric fire hazard monitoring detector |
| CN113405593A (en) * | 2021-05-19 | 2021-09-17 | 蚌埠依爱消防电子有限责任公司 | Time-sharing multiplexing and self-adapting method for temperature and leakage current detection channels |
-
2009
- 2009-09-15 CN CN2009202225269U patent/CN201522766U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014056376A1 (en) * | 2012-10-12 | 2014-04-17 | 中兴通讯股份有限公司 | Intelligent monitoring terminal and video monitoring method |
| CN109188063A (en) * | 2018-09-26 | 2019-01-11 | 北京明日电力电子有限公司 | A kind of sensor self-adaptation type composite electric fire hazard monitoring detector |
| CN113405593A (en) * | 2021-05-19 | 2021-09-17 | 蚌埠依爱消防电子有限责任公司 | Time-sharing multiplexing and self-adapting method for temperature and leakage current detection channels |
| CN113405593B (en) * | 2021-05-19 | 2022-04-05 | 蚌埠依爱消防电子有限责任公司 | Time-sharing multiplexing and self-adapting method for temperature and leakage current detection channels |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES2746195T3 (en) | Systems, procedures and devices to detect theft and the state of electrical energy | |
| CN103713238B (en) | The double-colored trouble indicator that warning current value can be established | |
| CN203324380U (en) | Direct-current source system insulation monitoring apparatus and monitoring host thereof | |
| CN201522766U (en) | Electrical fire detector | |
| CN203069672U (en) | Loop resistance testing system | |
| CN103983856B (en) | A kind of Low Voltage Differential Signal Interface Matching resistance automatic checkout equipment and method | |
| CN202110226U (en) | Inspection tour instrument of temperature rise test of power transmission and transformation equipment | |
| CN202853782U (en) | Intelligent testing system for temperature rise test | |
| CN102024303A (en) | An electrical fire detector and a method for monitoring two multi-path input signals | |
| CN204373804U (en) | Temperature polling instrument | |
| CN204330159U (en) | A kind of wireless temperature measurement system for monitoring breaker dynamic/static contact temperature | |
| CN202583314U (en) | Measuring instrument for a protective relaying outlet connection point and pressing plate potential | |
| CN204168001U (en) | A kind of intelligent duplicate power supply automatic change-over based on DSP | |
| CN106774262A (en) | The device and its implementation of Aulomatizeted Detect intelligence instrument master control borad hardware performance | |
| CN102829827A (en) | Monitoring device for bus duct | |
| CN204086480U (en) | A kind of direct current 24V relay automatic calibrating instrument | |
| CN102645263B (en) | Transmitter and control system comprising transmitter | |
| CN206726399U (en) | A kind of guide tracked fire detector circuit | |
| CN101493362A (en) | Digital temperature polling instrument for power supply-distribution system | |
| CN104749546A (en) | Novel type-III specific power transformer acquisition terminal testing device and testing method thereof | |
| CN204631186U (en) | A kind of phase three-wire three supply line decompression calculagraph | |
| CN204439247U (en) | Temperature signal autodiagnosis circuit | |
| CN204887282U (en) | Industry television system fault detection device | |
| CN103267585A (en) | Data acquisition system for electric appliance heating test testing angle | |
| CN217060484U (en) | Automatic calibrating installation of electric energy meter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 100020, Beijing, Chaoyang District, No. 17, 11 South Street, No. 2, South Street Patentee after: Liancheng (Beijing) Technology Development Co., Ltd. Address before: 100054 Beijing Tongzhou District City West town Huang Village (the old Byzantine Huidong hospital) Patentee before: Liancheng (Beijing) Technology Development Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100707 Termination date: 20150915 |
|
| EXPY | Termination of patent right or utility model |