CN203732931U - Vehicle-mounted terminal farad capacitor power down data retaining device - Google Patents
Vehicle-mounted terminal farad capacitor power down data retaining device Download PDFInfo
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- CN203732931U CN203732931U CN201420143348.1U CN201420143348U CN203732931U CN 203732931 U CN203732931 U CN 203732931U CN 201420143348 U CN201420143348 U CN 201420143348U CN 203732931 U CN203732931 U CN 203732931U
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- farad capacitor
- power
- resistance
- vehicle
- capacitor
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- 239000003990 capacitor Substances 0.000 title claims abstract description 52
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052744 lithium Inorganic materials 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 2
- 240000004859 Gamochaeta purpurea Species 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
Abstract
A vehicle-mounted end farad capacitor power down data retaining device relates to the field of automotive electronics equipment and aims to solve the problem in the conventional automotive electronics equipment that data cannot be saved due to system power interruption and the automobile failures are not analyzed conveniently and to improve the situation that as lithium batteries are connected externally through the terminal vehicle-mounted equipment, the security of automobiles is low. According to the vehicle-mounted end farad capacitor power down data retaining device, a power supply signal output end of a storage battery is connected with a power supply signal input end of a power module; a power supply positive electrode signal output end of the power module is simultaneously connected with the power supply signal input end of an MCU control unit, one end of a farad capacitor C 224 and one end of a resistor R 217; the other end of the capacitor C 224 is simultaneously connected with one end of a farad capacitor C 225, the other end of the resistor R 217 and one end of the resistor R 218; the other end of the farad capacitor C 225 is simultaneously connected with the power supply negative electrode of the power module and the other end of the resistor R 218. The vehicle-mounted end farad capacitor power down data retaining device can be applied in vehicle-mounted equipment.
Description
Technical field
The present invention relates to a kind of farad capacitor power failure data holding device.Be particularly related to a kind of car-mounted terminal farad capacitor power failure data holding device.
Background technology
Because automobile is because breaking down or the reasons such as traffic hazard occurring, making automobile cannot be mobile unit power supply, and the vehicle condition while causing cannot recording power down after mobile unit power down, is unfavorable for analyzing the reason that automobile breaks down or even traffic hazard occurs.Because mobile unit oneself power consumption is larger, in the situation that not having stabilized power source to be its power supply, meeting is at the moment of power-off vehicle-mounted terminal equipment also power-off rapidly at present.Add the method into a lithium battery outward in the system of terminal device, the problem that while making up power down, system cannot be worked for addressing the above problem adopt more.But the method has certain danger, because vapour vehicle interior temperature is higher, the operating ambient temperature of electronic equipment is through being everlasting more than 80 degrees Celsius, uses frequently and charging can cause lithium battery break down or even explode at this temperature, is unfavorable for the security of automobile.
Utility model content
The utility model is to cause data to preserve in order to solve existing vehicle electronics because of after system cut-off, and in order to improve by causing at the external lithium battery of terminal mobile unit the problem that vehicle safety is low.And proposition car-mounted terminal farad capacitor power failure data holding device.
Car-mounted terminal farad capacitor power failure data holding device, it comprises accumulator, power module and MCU control module, it also comprises farad capacitor C224, farad capacitor C225, resistance R 217 and resistance R 218,
The power supply signal output terminal of described accumulator is connected with the power supply signal input end of power module, and the positive source signal output part of power module is connected with one end of resistance R 217 with the power supply signal input end of MCU control module, one end of farad capacitor C224 simultaneously,
The other end of capacitor C 224 is connected with one end of resistance R 218 with one end of farad capacitor C225, the other end of resistance R 217 simultaneously, and the other end of farad capacitor C225 is connected with the other end of resistance R 218 with the power cathode of power module simultaneously.
The utility model is by accumulator first for the power module of vehicle-mounted terminal equipment is powered, and power module provides power supply for whole system, simultaneously also for farad capacitor C224 and farad capacitor C225 charge.When in the time of system power failure, power module can not be powered for vehicle-mounted terminal equipment, this device can discharge by being full of electric farad capacitor, for MCU control module provides of short duration energy.Make MCU control module have preservation that the duty of automobile after the power-off of time enough memory device, this device can realize data after power down simultaneously this device security on year-on-year basis existing employing lithium battery realize the security that power failure data keeps and will double above.It can be used in mobile unit.
Brief description of the drawings
Fig. 1 is the principle schematic of the car-mounted terminal farad capacitor power failure data holding device described in embodiment one.
Embodiment
Embodiment one: illustrate present embodiment with reference to Fig. 1, car-mounted terminal farad capacitor power failure data holding device described in present embodiment, it comprises accumulator 1, power module 2 and MCU control module 3, and it also comprises farad capacitor C224, C225, resistance R 217 and R218
The power supply signal output terminal of described accumulator 1 is connected with the power supply signal input end of power module 2, the positive source signal output part of power module 2 is connected with one end of resistance R 217 with the power supply signal input end of MCU control module 3, one end of farad capacitor C224 simultaneously
The other end of capacitor C 224 is connected with one end of resistance R 218 with one end of farad capacitor C225, the other end of resistance R 217 simultaneously, and the other end of farad capacitor C225 is connected with the other end of resistance R 218 with the power cathode of power module 2 simultaneously.
Embodiment two: the car-mounted terminal farad capacitor power failure data holding device difference described in present embodiment and embodiment one is, the supply voltage of accumulator 1 is+12V or+24V.
Embodiment three: the car-mounted terminal farad capacitor power failure data holding device difference described in present embodiment and embodiment one is, the resistance of resistance R 217 and resistance R 218 equates, and the capacitance of capacitor C 224 and capacitor C 225 equates.
Embodiment four: the car-mounted terminal farad capacitor power failure data holding device difference described in present embodiment and embodiment three is, the resistance of resistance R 217 is 300K.
Embodiment five: the car-mounted terminal farad capacitor power failure data holding device difference described in present embodiment and embodiment three is, the capacitance of capacitor C 224 is 2.2F.
In present embodiment, the value of resistance and electric capacity, determined power-off after MCU can also how long work.The resistance of electric capacity is larger, and the time of working after power-off is just longer.
Principle of work of the present utility model is: after automotive ignition, accumulator is first for the power module of vehicle-mounted terminal equipment is powered, power module is whole system power supply, simultaneously for farad capacitor C224 and the C225 of this device charge, in the time that power module can not be powered for vehicle-mounted terminal equipment because of reasons such as vehicle failure or generation traffic hazards, this device can discharge by being full of electric farad capacitor, for MCU control module provides of short duration electric capacity.Make MCU control module have time enough can record current vehicle condition.
The utility model is not limited to the concrete structure that above-mentioned various embodiment is recorded, and can also be the reasonable combination of the technical characterictic recorded of above-mentioned each embodiment.
Claims (5)
1. car-mounted terminal farad capacitor power failure data holding device, is characterized in that, it comprises accumulator (1), power module (2) and MCU control module (3), and it also comprises farad capacitor C224, farad capacitor C225, resistance R 217 and resistance R 218,
The power supply signal output terminal of described accumulator (1) is connected with the power supply signal input end of power module (2), the positive source signal output part of power module (2) is connected with one end of resistance R 217 with the power supply signal input end of MCU control module (3), one end of farad capacitor C224 simultaneously
The other end of capacitor C 224 is connected with one end of resistance R 218 with one end of farad capacitor C225, the other end of resistance R 217 simultaneously, and the other end of farad capacitor C225 is connected with the other end of resistance R 218 with the power cathode of power module (2) simultaneously.
2. car-mounted terminal farad capacitor power failure data holding device according to claim 1, is characterized in that, the supply voltage of accumulator (1) is+12V or+24V.
3. car-mounted terminal farad capacitor power failure data holding device according to claim 1, is characterized in that, the resistance of resistance R 217 and resistance R 218 equates, and the capacitance of capacitor C 224 and capacitor C 225 equates.
4. car-mounted terminal farad capacitor power failure data holding device according to claim 3, is characterized in that, the resistance of resistance R 217 is 300K.
5. car-mounted terminal farad capacitor power failure data holding device according to claim 3, is characterized in that, the capacitance of capacitor C 224 is 2.2F.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420143348.1U CN203732931U (en) | 2014-03-27 | 2014-03-27 | Vehicle-mounted terminal farad capacitor power down data retaining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420143348.1U CN203732931U (en) | 2014-03-27 | 2014-03-27 | Vehicle-mounted terminal farad capacitor power down data retaining device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203732931U true CN203732931U (en) | 2014-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420143348.1U Expired - Lifetime CN203732931U (en) | 2014-03-27 | 2014-03-27 | Vehicle-mounted terminal farad capacitor power down data retaining device |
Country Status (1)
| Country | Link |
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| CN (1) | CN203732931U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105720678A (en) * | 2016-03-24 | 2016-06-29 | 航天科技控股集团股份有限公司 | Low cost and low power consumption capacitive RTC freewheeling circuit |
-
2014
- 2014-03-27 CN CN201420143348.1U patent/CN203732931U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105720678A (en) * | 2016-03-24 | 2016-06-29 | 航天科技控股集团股份有限公司 | Low cost and low power consumption capacitive RTC freewheeling circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zheng Xiangbin Inventor after: Deng Ge Inventor after: Wang Yunpeng Inventor after: Wu Nannan Inventor after: Yin Haikun Inventor after: Gao Hongliang Inventor after: E Hongfei Inventor before: Liu Zhongquan |
|
| COR | Change of bibliographic data | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140723 |