CN202435024U - Anti-surge protective device of computer controller - Google Patents
Anti-surge protective device of computer controller Download PDFInfo
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- CN202435024U CN202435024U CN2011205514380U CN201120551438U CN202435024U CN 202435024 U CN202435024 U CN 202435024U CN 2011205514380 U CN2011205514380 U CN 2011205514380U CN 201120551438 U CN201120551438 U CN 201120551438U CN 202435024 U CN202435024 U CN 202435024U
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- surge
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- protective device
- resistance
- discharge tube
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Abstract
The utility model discloses an anti-surge protective device of a computer controller. The device mainly comprises a ceramic gas discharge tube, a voltage dependent resistor RY, a transient voltage restraining diode and a thermal resistor. When a surge voltage signal is transmitted to the ceramic gas discharge tube and the voltage dependent resistor RY, the high-impedance states of the ceramic gas discharge tube and the voltage dependent resistor RY are converted into low-impedance states, and surge voltage is released via the transient voltage restraining diode and the thermal resistor. The device has the characteristics of easiness in maintenance, small size and high universal property and the like.
Description
Technical field
The utility model 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.
The utility model content
For solving the problems of the technologies described above; The utility model 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 utility model is achieved through following technical scheme.
The described anti-surge protective device single channel of the utility model 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 utility model reaches is: 1. the utility model adopts embedded design, directly anti-surge circuit is integrated on the bus; 2. the utility model 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 utlity model has the integrated level height, change characteristics easily; 4. the utility model volume can be adjusted with the size of controller, can be embedded in the control system easily.
Description of drawings
Fig. 1 is the structural principle block diagram of the utility model.
Fig. 2 is the theory of constitution figure of the utility model.
Embodiment
Below through the embodiment form; Content to the utility model is done further explain; But the scope that should at this point not be interpreted as the said theme of the utility model only limits to following embodiment; Do not breaking away under the above-mentioned technological thought situation of the utility model, all various modifications, replacement and changes of making according to ordinary skill knowledge and customary means include in the scope of the utility model.
As depicted in figs. 1 and 2; The described anti-surge protective device single channel of the utility model 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.
The involved anti-surge protective device of the utility model is 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 utility model 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 utility model 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 |
|---|---|---|---|
| CN2011205514380U CN202435024U (en) | 2011-12-26 | 2011-12-26 | Anti-surge protective device of computer controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205514380U CN202435024U (en) | 2011-12-26 | 2011-12-26 | Anti-surge protective device of computer controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202435024U true CN202435024U (en) | 2012-09-12 |
Family
ID=46784433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205514380U Expired - Fee Related CN202435024U (en) | 2011-12-26 | 2011-12-26 | Anti-surge protective device of computer controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202435024U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420425A (en) * | 2011-12-26 | 2012-04-18 | 贵州航天天马机电科技有限公司 | Anti-surging protection device for computer controller |
| CN103683259A (en) * | 2013-12-06 | 2014-03-26 | 四川联友电讯技术有限公司 | High-safety communication system |
-
2011
- 2011-12-26 CN CN2011205514380U patent/CN202435024U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420425A (en) * | 2011-12-26 | 2012-04-18 | 贵州航天天马机电科技有限公司 | Anti-surging protection device for computer controller |
| CN103683259A (en) * | 2013-12-06 | 2014-03-26 | 四川联友电讯技术有限公司 | High-safety communication system |
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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 |
Granted publication date: 20120912 Termination date: 20151226 |
|
| EXPY | Termination of patent right or utility model |