CN203339688U - Temperature sensor protection circuit of bulk curing barn controller - Google Patents
Temperature sensor protection circuit of bulk curing barn controller Download PDFInfo
- Publication number
- CN203339688U CN203339688U CN2013204636869U CN201320463686U CN203339688U CN 203339688 U CN203339688 U CN 203339688U CN 2013204636869 U CN2013204636869 U CN 2013204636869U CN 201320463686 U CN201320463686 U CN 201320463686U CN 203339688 U CN203339688 U CN 203339688U
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- China
- Prior art keywords
- temperature sensor
- curing barn
- bulk curing
- barn controller
- protecting circuit
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- 230000001052 transient effect Effects 0.000 claims description 12
- 230000001629 suppression Effects 0.000 claims description 4
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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Abstract
The utility model discloses a temperature sensor protection circuit of a bulk curing barn controller. The temperature sensor protection circuit of the bulk curing barn controller comprises a plurality of input and output circuits. Each input and output circuit comprises an input end for connecting the bulk curing barn controller, a current-limiting resistor, a lightning protection surge element, a bleeder resistor, and an output end for connecting a plurality of temperature sensors. The first end and the second end of the current-limiting resistor are connected with the input end and the output end respectively. The first end and the second end of the lightning protection surge element are connected with the second end of the current-limiting resistor and the ground respectively. The first end and the second end of the bleeder resistor are connected with a power source and the first end of the lightning protection surge element respectively. By implementing the temperature sensor protection circuit of the utility model, lightning surge can be prevented so as to protect electric equipment.
Description
Technical field
The utility model relates to the protection field of equipment, especially designs a kind of temperature sensor protecting circuit of bulk curing barn controller.
Background technology
Bulk curing barn controller obtains temperature data by connecting temperature sensor, and main line and separated time by several meters long between temperature sensor and bulk curing barn controller are connected, and very easily are struck by lightning.Current bulk curing barn controller and the protective circuit between temperature sensor are generally used voltage stabilizing didoe to carry out overvoltage protection, but voltage stabilizing didoe is slower to surge and overvoltage reaction when lightning strikes or transient overvoltage, can not effectively eliminate thunderbolt or the transient overvoltage destruction to circuit; In addition, in the traditional protection circuit, current-limiting resistance generally is connected to one side that protective circuit connects temperature sensor, and when lightning strikes or transient overvoltage, current-limiting resistance easily is damaged in the very first time, and this also will badly influence the operation of bulk curing barn controller.
The utility model content
The technical problems to be solved in the utility model is; the protective circuit be connected with temperature sensor for bulk curing barn controller in prior art can not effectively be eliminated the harm of thunderbolt or transient overvoltage generation, and a kind of temperature sensor protecting circuit of bulk curing barn controller is provided.
The utility model solves the technical scheme that its technical problem adopts: construct a kind of temperature sensor protecting circuit of bulk curing barn controller, for the temperature sensor that prevents that thunderbolt or transient overvoltage from destroying bulk curing barn controller and being connected with bulk curing barn controller, the temperature sensor protecting circuit of described bulk curing barn controller comprises a plurality of imput output circuits, described a plurality of imput output circuit comprises respectively for connecting the input of bulk curing barn controller, current-limiting resistance, lightning protection surge element, divider resistance and for connecting the output of a plurality of temperature sensors, wherein, the first end of described current-limiting resistance is connected respectively described input and described output with the second end, the first end of described lightning protection surge element and the second end are connected respectively second end and ground of described current-limiting resistance, the first end of described divider resistance and the second end are connected respectively the first end of power supply and described lightning protection surge element.
In the temperature sensor protecting circuit of above-mentioned bulk curing barn controller, described a plurality of imput output circuits are four.
In the temperature sensor protecting circuit of above-mentioned bulk curing barn controller, described lightning protection surge element is two-way TVS Transient Suppression Diode.
In the temperature sensor protecting circuit of above-mentioned bulk curing barn controller, the resistance of described current-limiting resistance is between 100 ohm to 300 ohm.
In the temperature sensor protecting circuit of above-mentioned bulk curing barn controller, the model of described temperature sensor is DS18B20.
Implement the temperature sensor protecting circuit of bulk curing barn controller of the present utility model, there is following beneficial effect: when lightning strikes or transient overvoltage, can effectively reduce instantaneous pressure, the safety of protection power consumption equipment.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the applied environment schematic diagram of temperature sensor protecting circuit of the bulk curing barn controller of the utility model preferred embodiment;
Fig. 2 is the circuit diagram of critical piece of temperature sensor protecting circuit of the bulk curing barn controller of the utility model preferred embodiment.
Embodiment
Understand for technical characterictic of the present utility model, purpose and effect being had more clearly, now contrast accompanying drawing and describe embodiment of the present utility model in detail.
Fig. 1 is the applied environment schematic diagram of temperature sensor protecting circuit of the bulk curing barn controller of the utility model preferred embodiment; as shown in the figure; temperature sensor is connected with bulk curing barn controller by the temperature sensor protecting circuit of bulk curing barn controller; wherein; the temperature sensor protecting circuit of bulk curing barn controller is by 5 meters long main lines, the upper canopy separated time of 2.5 meters long, and the lower canopy separated time of 1.5 meters long is connected with temperature sensor.Temperature sensor protecting circuit and the line between temperature sensor of bulk curing barn controller are longer, subject to thunderbolt; When lightning strikes, the transient overvoltage that the temperature sensor protecting circuit of bulk curing barn controller can the produce thunderbolt the earth of releasing, thus eliminate the harm of transient overvoltage to circuit.
Fig. 2 is the circuit diagram of critical piece of temperature sensor protecting circuit of the bulk curing barn controller of the utility model preferred embodiment.In the present embodiment; the temperature sensor protecting circuit of bulk curing barn controller comprises four imput output circuits; specifically comprise input XPS, the input XPW, input SPS, the input SPW that connect bulk curing barn controller; current-limiting resistance R1-R4; lightning protection surge element Z1-Z4; divider resistance R5-R8, and connect respectively output XPSQ, output XPGQ, output SPSQ, the output SPGQ that four models are the DS18B20 temperature sensor.
Take one of them imput output circuit as example, input XPS, current-limiting resistance R1, lightning protection surge element Z1, divider resistance R5 and an imput output circuit of output XPSQ composition that connects a DS18B20 temperature sensor, wherein, the first end of current-limiting resistance R1 is connected respectively input XPS and output XPSQ with the second end, the first end of lightning protection surge element Z1 and the second end are connected respectively the second end and ground of current-limiting resistance R1, and the first end of divider resistance R5 and the second end are connected respectively the first end of power supply VCC and lightning protection surge element Z1.The structure of all the other imput output circuits and above-mentioned imput output circuit as example are identical, and only element numbers is had any different.
In an execution mode of the present utility model, lightning protection surge element Z1-Z4 is two-way TVS Transient Suppression Diode.
In another execution mode of the present utility model, the resistance of current-limiting resistance R1-R4 is between 100 ohm to 300 ohm.
Now describe the foregoing circuit operation principle in detail as follows:
(1) when the line of output XPSQ, output XPGQ, four DS18B20 temperature sensors of output SPSQ, output SPGQ connection is struck by lightning; two-way TVS Transient Suppression Diode Z1-Z4 can absorb the surge power up to thousands of watts within the extremely short time, thereby in time, circuit at different levels are avoided superpotential destruction in protective circuit effectively.
(2) because current-limiting resistance R1-R4 is separately positioned between input XPS, input XPW, input SPS, input SPW and lightning protection surge element Z1-Z4, so, when producing overvoltage, can avoid current-limiting resistance R1-R4 to be destroyed.
The above is described embodiment of the present utility model by reference to the accompanying drawings; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; rather than restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not breaking away from the scope situation that the utility model aim and claim protect, also can make a lot of forms, within these all belong to protection of the present utility model.
Claims (5)
1. the temperature sensor protecting circuit of a bulk curing barn controller, it is characterized in that: the temperature sensor protecting circuit of described bulk curing barn controller comprises a plurality of imput output circuits, each described imput output circuit comprises for connecting the input of bulk curing barn controller, current-limiting resistance, lightning protection surge element, divider resistance and for connecting the output of temperature sensor, wherein, the first end of described current-limiting resistance is connected respectively described input and described output with the second end, the first end of described lightning protection surge element and the second end are connected respectively second end and ground of described current-limiting resistance, the first end of described divider resistance and the second end are connected respectively the first end of power supply and described lightning protection surge element.
2. the temperature sensor protecting circuit of bulk curing barn controller as claimed in claim 1, is characterized in that, described a plurality of imput output circuits are four.
3. the temperature sensor protecting circuit of bulk curing barn controller as claimed in claim 2, is characterized in that, described lightning protection surge element is two-way TVS Transient Suppression Diode.
4. the temperature sensor protecting circuit of bulk curing barn controller as claimed in claim 3, is characterized in that, the resistance of described current-limiting resistance is between 100 ohm to 300 ohm.
5. the temperature sensor protecting circuit of bulk curing barn controller as claimed in claim 4, is characterized in that, the model of described temperature sensor is DS18B20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204636869U CN203339688U (en) | 2013-07-31 | 2013-07-31 | Temperature sensor protection circuit of bulk curing barn controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013204636869U CN203339688U (en) | 2013-07-31 | 2013-07-31 | Temperature sensor protection circuit of bulk curing barn controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203339688U true CN203339688U (en) | 2013-12-11 |
Family
ID=49708344
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013204636869U Expired - Fee Related CN203339688U (en) | 2013-07-31 | 2013-07-31 | Temperature sensor protection circuit of bulk curing barn controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203339688U (en) |
-
2013
- 2013-07-31 CN CN2013204636869U patent/CN203339688U/en not_active Expired - Fee Related
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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: 20131211 Termination date: 20160731 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |