CN102368607B - Power-off protection system for electronic product drop process - Google Patents
Power-off protection system for electronic product drop process Download PDFInfo
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- CN102368607B CN102368607B CN201110331449.2A CN201110331449A CN102368607B CN 102368607 B CN102368607 B CN 102368607B CN 201110331449 A CN201110331449 A CN 201110331449A CN 102368607 B CN102368607 B CN 102368607B
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Abstract
The invention provides a power-off protection system for an electronic product drop process. The system comprises an acceleration sensor, wherein the acceleration sensor is connected with an information processing circuit; the processing information of the information processing circuit is controlled by a control circuit; and the acceleration sensor, the information processing circuit and the control circuit are all arranged in an electronic product. Compared with the prior art, the power-off protection system for the electronic product drop process can sense whether the electronic product is in a dropping state or not and cut off the power before the electronic product touches the ground so as to protect the internal circuit of the electronic product from further burnout.
Description
Technical field
The present invention relates to a kind of electronic product circuit breaking protective system, specifically a kind of electronic product of effectively avoiding falls the power-off protection system for electronic product drop process that rear circuit burnout situation occurs.
Background technology
Electronic product in use, improper use, occasional drops into ground from eminence, can cause electronic product to damage.And electronic product is damaged under open state, easily cause internal circuit short circuit, thereby further burn internal electronics.Most of electronic products is all that the mode by ruggedized construction reduces product and falls damage.But frivolous electronic product, even considered reinforcing in configuration aspects, the internal circuit of also can inevitably damaging after falling.
Summary of the invention
Technical assignment of the present invention is in the deficiencies in the prior art; provide a kind of electronic product of effectively avoiding to fall rear circuit burnout situation generation; automatically sense that whether electronic product is in falling state; and before electronic product is encountered ground, by the power-off protection system for electronic product drop process of dump.
Technical scheme of the present invention realizes in the following manner; this power-off protection system for electronic product drop process; its structure comprises acceleration transducer; acceleration transducer is connected with information-processing circuit; the process information of information-processing circuit is controlled by control circuit, and described acceleration transducer, information-processing circuit, control circuit are all placed on electronic product inside.
Described acceleration transducer comprises digital accelerometer U3, and this digital accelerometer U3 is MDA100-02 digital accelerometer, its pin PIN1 input supply voltage VCC; Pin PIN5, PIN6 send respectively data pin, receive data pin, and digital accelerometer is by pin PIN5, PIN6 link information treatment circuit.
Described information-processing circuit comprises serial ports level transferring chip U1, information processing chip U2, this serial ports level transferring chip U1 is serial ports level transferring chip ADM213, pin PIN9, the PIN28 of U1 is for receiving data pin, sending data pin, and pin PIN9, PIN28 connect pin PIN5, the PIN6 of U3; Pin PIN8, the PIN21 of U1 meets pin PIN9, the PIN10 of information processing chip U2, and information processing chip U2 is information processing chip C8051F300, and U2 connects control circuit by pin PIN7.
Between pin PIN5, the PIN6 of above-mentioned U3 and pin PIN9, the PIN28 of U1, the level of send and receive is RS232 level, and between pin PIN8, the PIN21 of U1 and pin PIN9, the PIN10 of U2, receiving with the level sending is Transistor-Transistor Logic level.
Described control circuit comprises resistance R 2, resistance R 1, metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2, the pin PIN7 of the input termination U2 of resistance R 2, the G utmost point of the output termination metal-oxide-semiconductor Q2 of R2, the S utmost point ground connection of Q2, the D utmost point of Q2 connects the G utmost point of metal-oxide-semiconductor Q1, the input of described input voltage by fuse F1 connecting resistance R1, the S utmost point of Q1, the D utmost point of output termination Q2 of R1 is, the G utmost point of Q1, and the D utmost point of described Q1 provides the power supply of electronic product.
Described Q1 is P channel MOS tube, and Q2 is N-channel MOS pipe.
The beneficial effect that the present invention compared with prior art produced is:
Power-off protection system for electronic product drop process of the present invention can effectively avoid electronic product to fall rear circuit burnout situation generation; the present invention can sense that whether electronic product is in falling state; and before electronic product is encountered ground; by dump, thereby protection electronic product internal circuit is not further burnt out.
Accompanying drawing explanation
Accompanying drawing 1 is the structured flowchart that the present invention realizes circuit.
Accompanying drawing 2 is acceleration transducer internal circuit diagrams.
Accompanying drawing 3 is information-processing circuit figure.
Accompanying drawing 4 is control circuit figure.
Embodiment
Below in conjunction with accompanying drawing, power-off protection system for electronic product drop process provided by the present invention is described in detail below.
For when electronic product falls, protection electronic product internal circuit is not further burnt out.As shown in Figure 1; power-off protection system for electronic product drop process is provided; its structure comprises acceleration transducer; acceleration transducer is connected with information-processing circuit; the process information of information-processing circuit is controlled by control circuit, and described acceleration transducer, information-processing circuit, control circuit are all placed on electronic product inside.
As shown in Figure 2, described acceleration transducer comprises digital accelerometer U3, and this digital accelerometer U3 is MDA100-02 digital accelerometer, its pin PIN1 input supply voltage VCC; Pin PIN5, PIN6 send respectively data pin, receive data pin, and digital accelerometer is by pin PIN5, PIN6 link information treatment circuit.
As shown in Figure 3, described information-processing circuit comprises serial ports level transferring chip U1, information processing chip U2, this serial ports level transferring chip U1 is serial ports level transferring chip ADM213, pin PIN9, the PIN28 of U1 is for receiving data pin, sending data pin, and pin PIN9, PIN28 connect pin PIN5, the PIN6 of U3; Pin PIN8, the PIN21 of U1 meets pin PIN9, the PIN10 of information processing chip U2, and information processing chip U2 is information processing chip C8051F300, and U2 connects control circuit by pin PIN7.
Between pin PIN5, the PIN6 of above-mentioned U3 and pin PIN9, the PIN28 of U1, the level of send and receive is RS232 level, and between pin PIN8, the PIN21 of U1 and pin PIN9, the PIN10 of U2, receiving with the level sending is Transistor-Transistor Logic level.
As shown in Figure 4, described control circuit comprises resistance R 2, resistance R 1, metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2, the pin PIN7 of the input termination U2 of resistance R 2, the G utmost point of the output termination metal-oxide-semiconductor Q2 of R2, the S utmost point ground connection of Q2, the D utmost point of Q2 connects the G utmost point of metal-oxide-semiconductor Q1, described input voltage is by the input of fuse F1 connecting resistance R1, the S utmost point of Q1, the D utmost point of output termination Q2 of R1 is, the G utmost point of Q1, the D utmost point of described Q1 provides the power supply of electronic product, G grid very in metal-oxide-semiconductor, D very drains, and S is source electrode very.
Described Q1 is P channel MOS tube, and Q2 is N-channel MOS pipe.
In accompanying drawing 4, Q1 is paster metal-oxide-semiconductor Si4425DY, and Q2 is paster metal-oxide-semiconductor 2N7002, and resistance R 1 is Chip-R 5.1K ± 1%, and resistance R 2 is Chip-R 1K ± 1%.
Embodiment
The acceleration that acceleration transducer gathers electronic product is to information-processing circuit: the serial ports that digital accelerometer U3 consists of PIN5 and PIN6 receives control command, send acceleration information, the serial ports that chip U2 consists of PIN9 and PIN10 receives the acceleration from digital accelerometer U3, chip U1 is responsible for the TTL serial port power of chip U2 to flat turn and be changed to RS232 level, when the acceleration reading as U2 is more than or equal to free-fall acceleration, U2 sends out control signal to Q2 by PIN7, Q2 is responsible for turn-offing Q1, thereby cut off the electricity supply, thereby protection electronic product falls rear internal circuit and is not burned.
Claims (2)
1. power-off protection system for electronic product drop process, it is characterized in that its structure comprises acceleration transducer, acceleration transducer is connected with information-processing circuit, the process information of information-processing circuit is controlled by control circuit, and described acceleration transducer, information-processing circuit, control circuit are all placed on electronic product inside; Described acceleration transducer comprises digital accelerometer U3, and this digital accelerometer U3 is MDA100-02 digital accelerometer, its pin PIN1 input supply voltage VCC; Pin PIN5, PIN6 are respectively and send data pin, receive data pin, and digital accelerometer U3 is respectively by pin PIN5, PIN6 link information treatment circuit; Described information-processing circuit comprises serial ports level transferring chip U1, information processing chip U2, this serial ports level transferring chip U1 is serial ports level transferring chip ADM213, pin PIN9, the PIN28 of serial ports level transferring chip U1 is respectively and receives data pin, sends data pin, and pin PIN9, PIN28 connect respectively pin PIN5, the PIN6 of digital accelerometer U3; Pin PIN8, the PIN21 of serial ports level transferring chip U1 meets respectively pin PIN9, the PIN10 of information processing chip U2, information processing chip U2 is information processing chip C8051F300, information processing chip U2 connects control circuit by pin PIN7, wherein the pin PIN9 of information processing chip U2 is that level receives pin, PIN10 is level output pin, and PIN7 is digital signal output pin; Between pin PIN9, the PIN28 of pin PIN5, the PIN6 of above-mentioned digital accelerometer U3 and serial ports level transferring chip U1, the level of send and receive is RS232 level, and between pin PIN8, the PIN21 of serial ports level transferring chip U1 and pin PIN9, the PIN10 of information processing chip U2, receiving with the level sending is Transistor-Transistor Logic level; Described control circuit comprises resistance R 2, resistance R 1, metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2, the pin PIN7 of the input termination information processing chip U2 of resistance R 2, the G utmost point of the output termination metal-oxide-semiconductor Q2 of resistance R 2, the S utmost point ground connection of metal-oxide-semiconductor Q2, the D utmost point of metal-oxide-semiconductor Q2 connects the G utmost point of metal-oxide-semiconductor Q1, input voltage passes through the input of fuse F1 connecting resistance R1, the S utmost point of metal-oxide-semiconductor Q1, the D utmost point of the output termination metal-oxide-semiconductor Q2 of resistance R 1, the G utmost point of metal-oxide-semiconductor Q1, and the D utmost point of described metal-oxide-semiconductor Q1 provides the power supply of electronic product.
2. power-off protection system for electronic product drop process according to claim 1, is characterized in that described metal-oxide-semiconductor Q1 is P channel MOS tube, and metal-oxide-semiconductor Q2 is N-channel MOS pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110331449.2A CN102368607B (en) | 2011-10-27 | 2011-10-27 | Power-off protection system for electronic product drop process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110331449.2A CN102368607B (en) | 2011-10-27 | 2011-10-27 | Power-off protection system for electronic product drop process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102368607A CN102368607A (en) | 2012-03-07 |
| CN102368607B true CN102368607B (en) | 2014-10-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110331449.2A Expired - Fee Related CN102368607B (en) | 2011-10-27 | 2011-10-27 | Power-off protection system for electronic product drop process |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104735506B (en) * | 2015-03-18 | 2018-03-16 | 深圳市九洲电器有限公司 | Set top box protector and set top box |
| CN111685673B (en) * | 2020-05-14 | 2022-03-11 | 深圳市无限动力发展有限公司 | Self-protection method and device of machine, storage medium and sweeping robot |
| CN116149415A (en) * | 2023-01-06 | 2023-05-23 | 深圳市卡卓无线信息技术有限公司 | Circuit for preventing drop and false explosion of electronic detonator detonating card and control method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1742071A1 (en) * | 2004-04-28 | 2007-01-10 | Sony Corporation | Electronic device and fall detection method |
| CN100399425C (en) * | 2005-09-06 | 2008-07-02 | 广达电脑股份有限公司 | Hand disk circuit breaking protection device and method |
| CN1953119A (en) * | 2005-10-21 | 2007-04-25 | 鸿富锦精密工业（深圳）有限公司 | Relay control circuit |
| CN101060244A (en) * | 2006-04-19 | 2007-10-24 | 鸿富锦精密工业（深圳）有限公司 | Portable electronic device with the automatic shutoff protective functions |
| CN200973133Y (en) * | 2006-11-27 | 2007-11-07 | 南通大学 | Outer synchronous wire array CCD drive control system |
| CN101588127A (en) * | 2008-05-20 | 2009-11-25 | 於文 | Simplest switch voltage-stabilizing power supply with short circuit overcurrent and overheating protection |
| CN102157919B (en) * | 2010-02-12 | 2015-06-17 | 硕颉科技股份有限公司 | Boost power supply conversion device |
| CN102005722B (en) * | 2010-10-29 | 2014-05-07 | 播思通讯技术（北京）有限公司 | Method and device for preventing short circuit of handheld terminal |
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- 2011-10-27 CN CN201110331449.2A patent/CN102368607B/en not_active Expired - Fee Related
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| CN102368607A (en) | 2012-03-07 |
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