CN102420425A - Anti-surging protection device for computer controller - Google Patents
Anti-surging protection device for computer controller Download PDFInfo
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- CN102420425A CN102420425A CN2011104417227A CN201110441722A CN102420425A CN 102420425 A CN102420425 A CN 102420425A CN 2011104417227 A CN2011104417227 A CN 2011104417227A CN 201110441722 A CN201110441722 A CN 201110441722A CN 102420425 A CN102420425 A CN 102420425A
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Abstract
The invention discloses an anti-surging protection device for a computer controller. The anti-surging protection device mainly comprises a ceramic gas discharging tube, a piezoresistor RY, a transient voltage suppression diode and a thermistor. When a surging voltage signal is applied to the ceramic gas discharging tube and the piezoresistor, the ceramic gas discharging tube and the piezoresistor are changed from a high-resistance state to a low-resistance state to release surging voltage through the transient voltage suppression diode and the thermistor. The anti-surging protection device for the computer controller has the characteristics of small volume, high universality and the like, and is easy to maintain.
Description
Technical field
The present invention relates to a kind of anti-surge protective device of computer control; Specifically a kind ofly be used under some particular surroundings preventing that surge voltage from entering into the device of system to computer control, have be easy to safeguard, characteristics such as volume is little, highly versatile.
Background technology
Along with the progress of microelectric technique and control technology, the application of computer control in control system more and more widely, the performance of control system is greatly improved; Integrated level is also increasingly high, but also has some technological deficiencies, and the computer connection is in long Distance Transmission process; Be vulnerable to extraneous accidental shock and damage; This has also obtained checking in the actual use of some products, extraneous accidental shock enters into computer control through long distance communication circuit, produces high surge voltage product has been caused irreversible damage; Make the life cycle of product shorten, maintenance cost is also very high.
Summary of the invention
For solving the problems of the technologies described above; The present invention relates to a kind of anti-surge protective device of computer control; Specifically a kind of protective device of the surge voltage that produces when under some particular surroundings, being used to clamp down on the thunder and lightning electric shock to controller, have be easy to safeguard, characteristics such as volume is little, highly versatile.
The present invention is achieved through following technical scheme.
Anti-surge protective device single channel of the present invention mainly is made up of ceramic gas discharge tube, piezo-resistance RY, transient voltage restraining diode, thermistor; When the surge voltage signal imposes on ceramic gas discharge tube and piezo-resistance; Ceramic gas discharge tube and piezo-resistance transfer low resistive state to by high-impedance state, and surge voltage is discharged through transient voltage restraining diode and thermistor.
The effect of said piezo-resistance is to surpass the piezo-resistance upper limit when withstand voltage when adding surge voltage, and its can moment conducting, and absorbs the energy of surge voltage.
The effect of said thermistor is that its internal resistance will become very big, and inside and outside communication line is isolated when the moment that absorbs, heat surpassed its rated value.
Common 2 μ s of the disruptive discharge time of said ceramic discharge tube.
Compared with prior art, the beneficial effect that the present invention reaches is: 1. the present invention adopts embedded design, directly anti-surge circuit is integrated on the bus; 2. the present invention can carry out General design, and data/address bus, address bus, the control bus of controller itself do not had specific (special) requirements, and applicability is strong; 3. the present invention has the integrated level height, changes characteristics easily; 4. volume of the present invention can be adjusted with the size of controller, can be embedded in the control system easily.
Description of drawings
Fig. 1 is a structural principle block diagram of the present invention.
Fig. 2 is theory of constitution figure of the present invention.
Embodiment
Below through the embodiment form; Content of the present invention is done further explain; But the scope that should at this point not be interpreted as theme according to the invention only limits to following embodiment; Do not breaking away under the above-mentioned technological thought situation of the present invention, all various modifications, replacement and changes of making according to ordinary skill knowledge and customary means include within the scope of the invention.
As depicted in figs. 1 and 2; Anti-surge protective device single channel of the present invention mainly is made up of ceramic gas discharge tube, piezo-resistance RY, transient voltage restraining diode, thermistor; When the surge voltage signal imposes on ceramic gas discharge tube and piezo-resistance; Ceramic gas discharge tube and piezo-resistance transfer low resistive state to by high-impedance state, and surge voltage is discharged through transient voltage restraining diode and thermistor.The operation principle of ceramic gas discharge tube is a gas discharge, and when adding surge voltage when increasing to the dielectric strength above gas, the gap of two interpolars is converted into conduction state with discharge breakdown by original state of insulation, and surge voltage is discharged; Piezo-resistance role in this protective device is to surpass the piezo-resistance upper limit when withstand voltage when adding surge voltage, and its can moment conducting, and absorbs the energy of surge voltage; The reaction time of transient voltage restraining diode is fast, the ps level, and voltage clamp is accurate, and volume is little; The effect of thermistor is that its internal resistance will become very big, and inside and outside communication line is isolated when the moment that absorbs, heat surpassed its rated value.
Involved in the present invention to anti-surge protective device be mainly used in the described processor controls of controller that computer control comprises communication modes such as containing RS232, RS422, RS485; The bus of this quasi-controller adopts the AT96 mode, mainly is made up of motherboard, CPU board, input/output board, A/D data sampling plate, D/A plate, COM communication board etc.
To prevent that the surge protective device is integrated on the universal printed circuit board, its protection number of active lanes can be confirmed according to the communication port quantity of controller itself, carries out electrical isolation when carrying out exchanges data in controller inside with the outside.
When the surge voltage that produces on the protected circuit is pressed greater than the maximum embedding of anti-surge protective device, thereby then surge current is released through the gap of surge protector and is shifted protection controller internal circuit.
The present invention adopts integrated technique, and the integrated installation of circuit of anti-surge protective device is installed on the printed circuit board with other integrated circuit board same-interface of controller and size.The designer can connect the present invention through connector in use, after anti-surge protective device works, can repair through changing some protected locations.
Claims (4)
1. the anti-surge protective device of a computer control; It is characterized in that: mainly form by ceramic gas discharge tube, piezo-resistance RY, transient voltage restraining diode, thermistor; When the surge voltage signal imposes on ceramic gas discharge tube and piezo-resistance; Ceramic gas discharge tube and piezo-resistance transfer low resistive state to by high-impedance state, and surge voltage is discharged through transient voltage restraining diode and thermistor.
2. the anti-surge protective device of a kind of computer control according to claim 1 is characterized in that: the effect of said piezo-resistance is to surpass the piezo-resistance upper limit when withstand voltage when adding surge voltage, and its can moment conducting, and absorbs the energy of surge voltage.
3. the anti-surge protective device of a kind of computer control according to claim 1; It is characterized in that: the effect of said thermistor is when the moment that absorbs, heat surpassed its rated value; Its internal resistance will become very big, and inside and outside communication line is isolated.
4. the anti-surge protective device of a kind of computer control according to claim 1 is characterized in that: common 2 μ s of the disruptive discharge time of said ceramic discharge tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104417227A CN102420425A (en) | 2011-12-26 | 2011-12-26 | Anti-surging protection device for computer controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104417227A CN102420425A (en) | 2011-12-26 | 2011-12-26 | Anti-surging protection device for computer controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102420425A true CN102420425A (en) | 2012-04-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104417227A Pending CN102420425A (en) | 2011-12-26 | 2011-12-26 | Anti-surging protection device for computer controller |
Country Status (1)
| Country | Link |
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| CN (1) | CN102420425A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931649A (en) * | 2012-11-15 | 2013-02-13 | 陈文根 | Novel lightning protection device |
| CN106410658A (en) * | 2016-11-24 | 2017-02-15 | 珠海许继电气有限公司 | Electronic anti-tripping, opening, and closing monitoring device of distribution terminal |
| CN111478690A (en) * | 2020-04-15 | 2020-07-31 | 贵州航天天马机电科技有限公司 | High-reliability electronic switch circuit and control method |
| CN111837308A (en) * | 2018-08-20 | 2020-10-27 | 成都铁达电子股份有限公司 | Novel lightning protection overvoltage crowbar and protection device |
| CN111869031A (en) * | 2018-08-20 | 2020-10-30 | 成都铁达电子股份有限公司 | Lightning protection overvoltage protection circuit and protection device |
Citations (8)
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|---|---|---|---|---|
| CN2321155Y (en) * | 1997-12-08 | 1999-05-26 | 栖霞市供电公司 | Lightening arrester for electronic equipment |
| CN1674386A (en) * | 2004-03-23 | 2005-09-28 | 华为技术有限公司 | Balanced line signal interface protection circuit |
| CN201429649Y (en) * | 2009-08-11 | 2010-03-24 | 惠州市龙鼎盛电力科技有限公司 | Single-phase electronic RS-485 electric energy meter |
| CN101872968A (en) * | 2010-03-05 | 2010-10-27 | 杭州海康威视数字技术股份有限公司 | Protective circuit |
| CN201708517U (en) * | 2010-03-22 | 2011-01-12 | 深圳市芯朗金能源技术有限公司 | RS-485 communication interface protective circuit |
| CN201813153U (en) * | 2010-10-13 | 2011-04-27 | 上海爱瑞科技发展有限公司 | Anti-surging device of high-performance serial port |
| CN201937264U (en) * | 2011-03-14 | 2011-08-17 | 上海翼磊电子科技发展有限公司 | Signal surge protection circuit |
| CN202435024U (en) * | 2011-12-26 | 2012-09-12 | 贵州航天天马机电科技有限公司 | Anti-surge protective device of computer controller |
-
2011
- 2011-12-26 CN CN2011104417227A patent/CN102420425A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2321155Y (en) * | 1997-12-08 | 1999-05-26 | 栖霞市供电公司 | Lightening arrester for electronic equipment |
| CN1674386A (en) * | 2004-03-23 | 2005-09-28 | 华为技术有限公司 | Balanced line signal interface protection circuit |
| CN201429649Y (en) * | 2009-08-11 | 2010-03-24 | 惠州市龙鼎盛电力科技有限公司 | Single-phase electronic RS-485 electric energy meter |
| CN101872968A (en) * | 2010-03-05 | 2010-10-27 | 杭州海康威视数字技术股份有限公司 | Protective circuit |
| CN201708517U (en) * | 2010-03-22 | 2011-01-12 | 深圳市芯朗金能源技术有限公司 | RS-485 communication interface protective circuit |
| CN201813153U (en) * | 2010-10-13 | 2011-04-27 | 上海爱瑞科技发展有限公司 | Anti-surging device of high-performance serial port |
| CN201937264U (en) * | 2011-03-14 | 2011-08-17 | 上海翼磊电子科技发展有限公司 | Signal surge protection circuit |
| CN202435024U (en) * | 2011-12-26 | 2012-09-12 | 贵州航天天马机电科技有限公司 | Anti-surge protective device of computer controller |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931649A (en) * | 2012-11-15 | 2013-02-13 | 陈文根 | Novel lightning protection device |
| CN106410658A (en) * | 2016-11-24 | 2017-02-15 | 珠海许继电气有限公司 | Electronic anti-tripping, opening, and closing monitoring device of distribution terminal |
| CN111837308A (en) * | 2018-08-20 | 2020-10-27 | 成都铁达电子股份有限公司 | Novel lightning protection overvoltage crowbar and protection device |
| CN111869031A (en) * | 2018-08-20 | 2020-10-30 | 成都铁达电子股份有限公司 | Lightning protection overvoltage protection circuit and protection device |
| CN111837308B (en) * | 2018-08-20 | 2021-09-28 | 成都铁达电子股份有限公司 | Novel lightning protection overvoltage crowbar and protection device |
| CN111869031B (en) * | 2018-08-20 | 2022-08-16 | 成都铁达电子股份有限公司 | Lightning protection overvoltage protection circuit and protection device |
| CN111478690A (en) * | 2020-04-15 | 2020-07-31 | 贵州航天天马机电科技有限公司 | High-reliability electronic switch circuit and control method |
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Application publication date: 20120418 |