CN103256996A - Temperature detector - Google Patents
Temperature detector Download PDFInfo
- Publication number
- CN103256996A CN103256996A CN201210461120.2A CN201210461120A CN103256996A CN 103256996 A CN103256996 A CN 103256996A CN 201210461120 A CN201210461120 A CN 201210461120A CN 103256996 A CN103256996 A CN 103256996A
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- resistance
- temperature
- temperature signal
- operational amplifier
- resistor
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Abstract
The invention discloses a temperature detector. The temperature detector comprises a temperature signal detecting circuit, a temperature signal amplification circuit and a single chip microcomputer. The temperature signal detecting circuit comprises a temperature sensor, a first resistor and a second resistor. The temperature signal amplification circuit comprises an operational amplifier, a third resistor, a fourth resistor, a fifth resistor and a sixth resistor. The sampled temperature value of an electric device is converted to a voltage value through the temperature signal detecting circuit and the voltage value is output to the temperature signal amplification circuit through the temperature signal detecting circuit. The voltage value is amplified through the temperature signal amplification circuit and output to the single chip microcomputer. The input voltage value is processed through the single chip microcomputer, so that the real-time temperature of the electric device is obtained. The temperature of the electric device can be detected in real time, so that the occurrence of electrical fire is prevented and completely eradicated from a source.
Description
Technical field
The present invention relates to a kind of temperature-detecting device, relate in particular to a kind of for the temperature-detecting device of control with the protection switch controller.
Background technology
Control and protection switch controller have the function that mode that far distance automatic controlling and the control of manpower on the spot has concurrently is carried out control operation; have cooperation time-the current protection characteristic; have control and protection from movingly, after the short circuit function of operation continuously, can realize control and protection to motor load, distribution load.But; traditional control and protection switch controller only have the overload long delay; the short circuit short time delay; short circuit is instantaneous, undercurrent, three-phase imbalance; basic control functions such as overvoltage/undervoltage protection; can't the real time temperature of main line and consumer be detected, cause consumer Yin Wendu too high and cause fire, can not comprehensively bring protection to electric fault.
Summary of the invention
At above-mentioned technical matters, the object of the present invention is to provide a kind of temperature-detecting device, it can detect in real time to the temperature of consumer, prevents the generation of electrical fire.
For reaching this purpose, the present invention by the following technical solutions:
A kind of temperature-detecting device, this device comprises temperature signal testing circuit, temperature signal amplifying circuit and single-chip microcomputer;
Described temperature signal testing circuit comprises temperature sensor, first resistance and second resistance, and described temperature signal amplifying circuit comprises operational amplifier, the 3rd resistance, the 4th resistance, the 5th resistance and the 6th resistance;
Wherein, one end ground connection of described temperature sensor, the other end and the node after an end of first resistance is connected connect an end of second resistance, the other end of described first resistance connects power supply, the input end in the same way of another termination operational amplifier of described second resistance, the reverse input end of described operational amplifier and the node after an end of the 3rd resistance is connected connect an end of the 4th resistance, the other end of described the 4th resistance and the node after the output terminal of operational amplifier is connected connect the input end of single-chip microcomputer, the other end of described the 3rd resistance connects an end of the 5th resistance, one end of the 6th resistance, the other end ground connection of described the 5th resistance, the other end of described the 6th resistance is connected with described power supply.
Especially, described temperature signal testing circuit also comprises first electric capacity, one end ground connection, and the other end is connected with the input end in the same way of operational amplifier.
Especially, described temperature signal amplifying circuit also comprises second electric capacity and the 7th resistance, one end of described second electric capacity and node concatenation operation amplifier after described power supply is connected, other end ground connection, one end of described the 7th resistance is connected with described power supply, the output terminal of other end concatenation operation amplifier.
The present invention is converted to magnitude of voltage by temperature sensor in the temperature signal testing circuit with the temperature value of the consumer that samples and exports to the temperature signal amplifying circuit, by the temperature signal amplifying circuit described magnitude of voltage is amplified, export to single-chip microcomputer, by single-chip microcomputer the magnitude of voltage of input is handled, obtained the real time temperature of consumer.The present invention can detect in real time to the temperature of consumer, when temperature is higher than the alarming value that control sets with the protection switch controller, with disconnecting circuit or warning, prevents and stop the generation of electrical fire from the source.
Description of drawings
The temperature-detecting device structural drawing that Fig. 1 provides for the embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the invention will be further described below in conjunction with drawings and Examples.
Please refer to shown in Figure 1ly, temperature-detecting device comprises in the present embodiment: temperature signal testing circuit, temperature signal amplifying circuit and single-chip microcomputer (not shown).
Described temperature signal testing circuit comprises temperature sensor PT, first resistance R 1, second resistance R 2 and first capacitor C 1, and described temperature signal amplifying circuit comprises operational amplifier UA, the 3rd resistance R 3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6, the 7th resistance R 7 and second capacitor C 2.
Wherein, the end ground connection GND of described temperature sensor PT, the other end and the node after an end of first resistance R 1 is connected connect an end of second resistance R 2, the other end of described first resistance R 1 connects power supply VCC, the input end in the same way of another termination operational amplifier UA of described second resistance R 2, the reverse input end of described operational amplifier UA and the node after an end of the 3rd resistance R 3 is connected connect an end of the 4th resistance R 4, the other end of described the 4th resistance R 4 and the node after the output terminal of operational amplifier UA is connected connect the input end of single-chip microcomputer, the other end of described the 3rd resistance R 3 connects an end of the 5th resistance R 5, one end of the 6th resistance R 6, the other end ground connection GND of described the 5th resistance R 5, the other end of described the 6th resistance R 6 is connected with described power supply VCC.One end ground connection GND of described first capacitor C 1, the other end is connected with the input end in the same way of operational amplifier UA.One end of described second capacitor C 2 and node concatenation operation amplifier UA after described power supply VCC is connected, other end ground connection GND, an end of described the 7th resistance R 7 is connected with described power supply VCC, the output terminal of other end concatenation operation amplifier UA.
The course of work of the present invention is as follows: power supply VCC selects the power supply of 5V for use, and the resistance of temperature sensor PT can change along with temperature variation.First resistance R 1 is connected with temperature sensor PT and is formed bleeder circuit, the magnitude of voltage that temperature sensor PT is formed by the temperature of the consumer that samples is received the input end in the same way of operational amplifier UA through second resistance R 2, operational amplifier UA exports to the single-chip microcomputer processing with described magnitude of voltage after amplifying processing, thereby obtains the real time temperature of consumer.When this temperature is lower than the protection value of setting, temperature-detecting device will detect the temperature of consumer again, and when this temperature is higher than the alarming value of setting, single-chip microcomputer will be protected output, disconnecting circuit or warning.
Technical scheme of the present invention can detect in real time to the temperature of consumer, prevents and stopped the generation of electrical fire from the source.
Above-mentioned only is preferred embodiment of the present invention and institute's application technology principle, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses, and the variation that can expect easily or replacement all should be encompassed in protection scope of the present invention.
Claims (3)
1. a temperature-detecting device is characterized in that, comprises temperature signal testing circuit, temperature signal amplifying circuit and single-chip microcomputer;
Described temperature signal testing circuit comprises temperature sensor, first resistance and second resistance, and described temperature signal amplifying circuit comprises operational amplifier, the 3rd resistance, the 4th resistance, the 5th resistance and the 6th resistance;
Wherein, one end ground connection of described temperature sensor, the other end and the node after an end of first resistance is connected connect an end of second resistance, the other end of described first resistance connects power supply, the input end in the same way of another termination operational amplifier of described second resistance, the reverse input end of described operational amplifier and the node after an end of the 3rd resistance is connected connect an end of the 4th resistance, the other end of described the 4th resistance and the node after the output terminal of operational amplifier is connected connect the input end of single-chip microcomputer, the other end of described the 3rd resistance connects an end of the 5th resistance, one end of the 6th resistance, the other end ground connection of described the 5th resistance, the other end of described the 6th resistance is connected with described power supply.
2. temperature-detecting device according to claim 1 is characterized in that, described temperature signal testing circuit also comprises first electric capacity, one end ground connection, and the other end is connected with the input end in the same way of operational amplifier.
3. temperature-detecting device according to claim 2, it is characterized in that, described temperature signal amplifying circuit also comprises second electric capacity and the 7th resistance, one end of described second electric capacity and node concatenation operation amplifier after described power supply is connected, other end ground connection, one end of described the 7th resistance is connected with described power supply, the output terminal of other end concatenation operation amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210461120.2A CN103256996A (en) | 2012-11-15 | 2012-11-15 | Temperature detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210461120.2A CN103256996A (en) | 2012-11-15 | 2012-11-15 | Temperature detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103256996A true CN103256996A (en) | 2013-08-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210461120.2A Pending CN103256996A (en) | 2012-11-15 | 2012-11-15 | Temperature detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103256996A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377402A (en) * | 2014-12-02 | 2015-02-25 | 天津航空机电有限公司 | Control and fault diagnosing system of battery heater |
| CN106197720A (en) * | 2016-07-26 | 2016-12-07 | 北京六合伟业科技股份有限公司 | Orientation sensor circuit without temperature calibration |
| CN108931317A (en) * | 2018-05-30 | 2018-12-04 | 马鞍山松鹤信息科技有限公司 | A kind of substation's temperature-detecting device and detection method |
| CN114112093A (en) * | 2021-11-22 | 2022-03-01 | 海安市综合检验检测中心 | Thermal resistance temperature measurement circuit with sampling signal linearization function |
-
2012
- 2012-11-15 CN CN201210461120.2A patent/CN103256996A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104377402A (en) * | 2014-12-02 | 2015-02-25 | 天津航空机电有限公司 | Control and fault diagnosing system of battery heater |
| CN106197720A (en) * | 2016-07-26 | 2016-12-07 | 北京六合伟业科技股份有限公司 | Orientation sensor circuit without temperature calibration |
| CN106197720B (en) * | 2016-07-26 | 2019-05-24 | 北京六合伟业科技股份有限公司 | Orientation sensor circuit without temperature calibration |
| CN108931317A (en) * | 2018-05-30 | 2018-12-04 | 马鞍山松鹤信息科技有限公司 | A kind of substation's temperature-detecting device and detection method |
| CN114112093A (en) * | 2021-11-22 | 2022-03-01 | 海安市综合检验检测中心 | Thermal resistance temperature measurement circuit with sampling signal linearization function |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130821 |