CN203134066U - detection device - Google Patents
detection device Download PDFInfo
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- CN203134066U CN203134066U CN 201320015380 CN201320015380U CN203134066U CN 203134066 U CN203134066 U CN 203134066U CN 201320015380 CN201320015380 CN 201320015380 CN 201320015380 U CN201320015380 U CN 201320015380U CN 203134066 U CN203134066 U CN 203134066U
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- chip microcomputer
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Abstract
The utility model discloses an automobile electrical fault arc fire hazard detection device; the device is provided with a hall current sensor connected on an automobile electric circuit; and an output terminal of the hall current sensor is electrically connected in sequence with a voltage comparator, a one-chip microcomputer system and an acousto-optic alarm circuit. The hall current sensor is employed to detect signals and to extract current characteristics of the automobile electric circuit; the one-chip microcomputer system is employed to record current impact numbers (one-chip microcomputer system external interruption numbers) in the circuit when the arc happens; so energy of the arc can be determined so as to determine electric faults; the faults can be identified at an early stage of the automobile fire hazard; and alarm signals can be simultaneously sent out and measurements can be timely implemented to block the arc, thereby preventing generation of automobile electric fire hazard. The limitation in the prior art that an electric circuit protection device utilizes current threshold for determination is prevented; identification scope to system electric faults by the protection system is expanded; and reliability of circuit protection system is improved.
Description
Technical field
The utility model relates to a kind of auto electric fault electric arc fire detecting arrangement, and this device is based on the determination methods of current failure feature in the electric wiring.Can be widely used in the detection of all kinds of auto electric line faults.
Background technology
Along with the reinforcement of economic activity, the use amount of automobile constantly increased in recent years, and according to Traffic Administration Bureau of Ministry of Public Security data, national vehicle guaranteeding organic quantity reaches 1.06 hundred million up to now, be only second to the U.S. in 2.85 hundred million of the U.S., occupy the second in the world.Yet for various reasons, the automobile fire accident also constantly takes place and ever-increasing trend is arranged, the massive losses of the personal property that also causes simultaneously.Therefore be badly in need of reinforcement to the attention of automobile fire.
At present, the reason that causes automobile fire can be divided into the electrical system system failure, oil piping system fault, and trouble of exhaust system.Wherein higher by the automobile fire proportion of electrical malfunction initiation.Its main cause is ever-increasing electrical equipment and wire harness in the car, is fixed in the space narrow in the car by nipper.These wire harness are influenced by Vibration on Heat Transfer easily and damage insulation course, cause electric fault.The safety apparatus of auto electric circuit also just rest on laboratory stage for the validity of fire preventing at present; for circuit overload and dead short over current fault; protective device can be made action timely and effectively; but in the circuit because of electric arc contact short circuit and metallicity contact short circuit fault in short-term, protective device can not in time be made judgement.
At the electric arc contact short circuit with in short-term in the metallicity contact short circuit fault, the direct-current arc discharge can take place in the circuit breakage, clearance between lead is breakdown, the dash current that occurs moment in the circuit, thereby generation electric spark, speckle with the combustible of greasy dirt around constantly the electric spark that occurs is splashed to, be easy in the car internal combustion, and then cause the automobile breaking out of fire.Automobile fire has on fire fast, and violent, the difficult characteristics of putting out a fire to save life and property of burning make automobile in a single day catch fire and just are difficult to be puted out a fire to save life and property.Therefore need to the electric arc contact short circuit and in short-term metallicity contact short circuit fault accomplish that early detection identifies, avoid further developing of fault.
The utility model content
The purpose of this utility model is at present auto electric line protective devices; situation about can't effectively identify the electric spark fault that be interrupted to occur in the circuit; a kind of reliable auto electric fault electric arc fire detecting arrangement is proposed; it can effectively be identified the fault electric spark that occurs in the circuit; and the output early warning signal, thereby effectively contain the generation of auto electric fault fire.
Auto electric fault electric arc fire detecting arrangement has the Hall current sensor that is connected on the auto electric circuit, and the output terminal of this Hall current sensor is electrically connected with voltage comparator, Single Chip Microcomputer (SCM) system and sound light alarming circuit successively; Obtain and the proportional voltage signal of auto electric line current by Hall current sensor, this voltage signal passes through voltage comparator, form square-wave pulse signal, this square-wave pulse signal input Single Chip Microcomputer (SCM) system, interrupt by the outside negative edge triggering system of single-chip microcomputer, Single Chip Microcomputer (SCM) system record external interrupt number of times, and according to the number of times that enters external interrupt in the unit interval, judge electric fault, send the sound and light alarm signal to sound light alarming circuit.
To collect the undistorted of square-wave pulse signal in order making, to be serially connected with voltage follower between above-mentioned voltage comparator and the above-mentioned Single Chip Microcomputer (SCM) system.
Serve as to survey situ part with above-mentioned Hall current sensor and above-mentioned voltage comparator, be the centralized control part with above-mentioned Single Chip Microcomputer (SCM) system and above-mentioned sound light alarming circuit, above-mentioned detection situ part has a plurality of, be connected to each part that need survey on the auto electric circuit, the output terminal of each above-mentioned detection situ part is connected to the input end of above-mentioned centralized control part.
Serve as to survey situ part with above-mentioned Hall current sensor and above-mentioned voltage comparator, be the centralized control part with above-mentioned voltage follower, above-mentioned Single Chip Microcomputer (SCM) system and above-mentioned sound light alarming circuit, above-mentioned detection situ part has a plurality of, be connected to each part that need survey on the auto electric circuit, the output terminal of each above-mentioned detection situ part is connected to the input end of above-mentioned centralized control part.
After adopting such scheme, auto electric fault electric arc fire detecting arrangement of the present utility model, by the Hall current sensor detectable signal, extract auto electric line current feature, the number (Single Chip Microcomputer (SCM) system external interrupt number) of rush of current in the circuit when taking place by Single Chip Microcomputer (SCM) system record electric arc, can judge the energy size that electric arc takes place, thereby differentiation electric fault, can be in the initial stage identification fault that automobile fire takes place, the while output alarm signal, the electric arc of in time taking measures to block is avoided the generation of auto electric fire.Overcome present electric wiring protective device by the limitation of size of current threshold decision, expanded the identification range of protection system to the system electrical fault, strengthened the reliability of circuit protection system.
Description of drawings
Fig. 1 is Circuits System synoptic diagram of the present utility model.
Embodiment
As shown in Figure 1, auto electric fault electric arc fire detecting arrangement of the present utility model, have the Hall current sensor 1 that is connected on the auto electric circuit, the output terminal of this Hall current sensor 1 is electrically connected with voltage comparator 2, voltage follower 3, Single Chip Microcomputer (SCM) system 4 and sound light alarming circuit 5 successively.
During work, obtain and the proportional voltage signal of auto electric line current by Hall current sensor 1, this voltage signal is by voltage comparator 2, the output square-wave pulse signal, this square-wave pulse signal is by voltage follower 3, carry out importing Single Chip Microcomputer (SCM) system 4 after the level impedance matching of front and back, interrupt by the outside negative edge triggering system of single-chip microcomputer, Single Chip Microcomputer (SCM) system 4 record external interrupt number of times, and according to the number of times that enters external interrupt in the unit interval, judge that electric fault (enters the safe number of times scope of external interrupt in the predeterminable unit interval in the Single Chip Microcomputer (SCM) system 4, surpass this safe number of times scope, then be judged as electric fault), when being judged as electric fault, Single Chip Microcomputer (SCM) system 4 is sent the sound and light alarm signal to sound light alarming circuit 5, and sound light alarming circuit 5 begins to report to the police, notify the occupant electric arc of in time taking measures to block, avoid the generation of auto electric fire.Simultaneously, Single Chip Microcomputer (SCM) system 4 also exportable control signal can be cut off the auto electric circuit to a topworks automatically by this topworks, avoids the generation of auto electric fire.
Serve as to survey situ part with Hall current sensor 1, voltage comparator 2, be the centralized control part with voltage follower 3, Single Chip Microcomputer (SCM) system 4 and sound light alarming circuit 5, above-mentioned detection situ part has a plurality of, can be connected to each part that need survey on the auto electric circuit, each output terminal of surveying situ part is connected to the input end of voltage follower 3.
Wherein, it is undistorted that voltage follower 3 can make the square-wave pulse signal of voltage comparator output.
Hall current sensor 1 adopts the detachable current sensor of Hall, but its secondary direct output of DC current is pressed signal.
Claims (4)
1. auto electric fault electric arc fire detecting arrangement, it is characterized in that: have the Hall current sensor that is connected on the auto electric circuit, the output terminal of this Hall current sensor is electrically connected with voltage comparator, Single Chip Microcomputer (SCM) system and sound light alarming circuit successively; Obtain and the proportional voltage signal of auto electric line current by Hall current sensor, this voltage signal passes through voltage comparator, form square-wave pulse signal, this square-wave pulse signal input Single Chip Microcomputer (SCM) system, interrupt by the outside negative edge triggering system of single-chip microcomputer, Single Chip Microcomputer (SCM) system record external interrupt number of times, and according to the number of times that enters external interrupt in the unit interval, judge electric fault, send the sound and light alarm signal to sound light alarming circuit.
2. auto electric fault electric arc fire detecting arrangement according to claim 1 is characterized in that: be serially connected with voltage follower between above-mentioned voltage comparator and the above-mentioned Single Chip Microcomputer (SCM) system.
3. auto electric fault electric arc fire detecting arrangement according to claim 1, it is characterized in that: serve as to survey situ part with above-mentioned Hall current sensor and above-mentioned voltage comparator, be the centralized control part with above-mentioned Single Chip Microcomputer (SCM) system and above-mentioned sound light alarming circuit, above-mentioned detection situ part has a plurality of, be connected to each part that need survey on the auto electric circuit, the output terminal of each above-mentioned detection situ part is connected to the input end of above-mentioned centralized control part.
4. auto electric fault electric arc fire detecting arrangement according to claim 2, it is characterized in that: serve as to survey situ part with above-mentioned Hall current sensor and above-mentioned voltage comparator, be the centralized control part with above-mentioned voltage follower, above-mentioned Single Chip Microcomputer (SCM) system and above-mentioned sound light alarming circuit, above-mentioned detection situ part has a plurality of, be connected to each part that need survey on the auto electric circuit, the output terminal of each above-mentioned detection situ part is connected to the input end of above-mentioned centralized control part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320015380 CN203134066U (en) | 2013-01-11 | 2013-01-11 | detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320015380 CN203134066U (en) | 2013-01-11 | 2013-01-11 | detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203134066U true CN203134066U (en) | 2013-08-14 |
Family
ID=48942020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320015380 Expired - Fee Related CN203134066U (en) | 2013-01-11 | 2013-01-11 | detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203134066U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764966A (en) * | 2015-04-20 | 2015-07-08 | 河北工业大学 | Test simulation device for simulating alternating current arc faults |
| CN105676077A (en) * | 2014-11-18 | 2016-06-15 | 北京兴迪仪器有限责任公司 | High-voltage cable partial discharge on-line monitoring alarm method, device and system |
| CN106004733A (en) * | 2016-08-08 | 2016-10-12 | 李海斌 | Magnetic safety device for civil family car |
| CN106711954A (en) * | 2017-03-10 | 2017-05-24 | 常熟理工学院 | Fast-response over-current and short-circuit protection circuit |
-
2013
- 2013-01-11 CN CN 201320015380 patent/CN203134066U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105676077A (en) * | 2014-11-18 | 2016-06-15 | 北京兴迪仪器有限责任公司 | High-voltage cable partial discharge on-line monitoring alarm method, device and system |
| CN104764966A (en) * | 2015-04-20 | 2015-07-08 | 河北工业大学 | Test simulation device for simulating alternating current arc faults |
| CN106004733A (en) * | 2016-08-08 | 2016-10-12 | 李海斌 | Magnetic safety device for civil family car |
| CN106711954A (en) * | 2017-03-10 | 2017-05-24 | 常熟理工学院 | Fast-response over-current and short-circuit protection circuit |
| CN106711954B (en) * | 2017-03-10 | 2019-05-17 | 常熟理工学院 | A kind of fast-response short circuit over-current protection circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20180111 |