CN2724069Y - Electronic temperature controller - Google Patents
Electronic temperature controller Download PDFInfo
- Publication number
- CN2724069Y CN2724069Y CN 200420088823 CN200420088823U CN2724069Y CN 2724069 Y CN2724069 Y CN 2724069Y CN 200420088823 CN200420088823 CN 200420088823 CN 200420088823 U CN200420088823 U CN 200420088823U CN 2724069 Y CN2724069 Y CN 2724069Y
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- temperature
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Abstract
The utility model provides an electronic temperature controller. The utility model comprises a temperature measurement circuit, a prewired circuit and a comparison circuit; the output terminal of the temperature measurement circuit is connected with the signal input terminal of the comparison circuit; the output terminal of the prewired circuit is connected with the reference voltage signal terminal of the comparison circuit; the output terminal of the comparison circuit is coupled with an execution circuit through a driving circuit. When the output signal of the temperature measurement circuit exceeds the output signal of the prewired circuit, the comparison circuit outputs the first electrical signal to activate the execution circuit to switch on the circuit controlled by the execution circuit. When the output signal of the temperature measurement circuit is equivalent to the output signal of the prewired circuit, the comparison circuit outputs the second electrical signal to activate the execution circuit to switch off the circuit controlled by the execution circuit. The prewired circuit is composed of an electronic potentiometer. The temperature prewired circuit of the electronic temperature controller of the utility model adopts the electronic potentiometer to set the voltage or current value, having high sensibility, high precision and precise temperature control.
Description
Technical field
The utility model relates to temperature controller.
Background technology
In the prior art, mainly contain two kinds of mechanical type and electronic types such as the temperature controller of temperature equipments such as refrigeration or pyrogenicity.
Mechanical temperature controller generally adopts thermopair as temperature sensor, controls the break-make of mechanical switch, thereby the running status of control temperature equipment reaches the purpose of controlling temperature.This temperature controller poor sensitivity, error is big, and is out of order easily.
The electronic type temperature controller adopts thermistor to make temperature sensor more, convert temperature value to certain magnitude of voltage or current value, voltage of setting with prewired circuit or current value ratio are, control the running status of temperature equipment with result relatively, the temperature preset circuit of existing electronic type temperature controller is made of mechanical variable resistor, for comparer is set a voltage (representing required temperature value).Accuracy of temperature control depends on the consistance of the linear relationship of the signal output characteristics of thermistor and variable-resistance change in resistance amount largely.And the linearity of mechanical variable resistance, interchangeability are relatively poor, be difficult to output characteristics with thermistor and match, this make product linear relatively poor, precision is limited, be difficult to reach high-precision temperature controls.
Summary of the invention
The purpose of this utility model provides a kind of electronic light/temp controller, and its temperature preset circuit adopts electronic potentiometer to come setting voltage or current value, and is highly sensitive, precision is high, can accomplish the accurate control of temperature.
The purpose of this utility model is achieved in that
A kind of temperature controller, it comprises: be used for environment temperature convert to electric signal temperature measurement circuit, be used to produce the prewired circuit of preset temperature electric signal, be used to judge that whether consistent ambient temperature signal and preset temperature signal comparator circuit, the output terminal of this temperature measurement circuit are connected with the signal input part of comparator circuit, the output terminal of prewired circuit is connected with the reference voltage signal end of comparator circuit, and the output terminal of comparator circuit is by a driving circuit and executive circuit coupling; When the signal of temperature measurement circuit output surpassed the signal of prewired circuit output, comparator circuit was exported first electric signal; Make executive circuit action, connect the circuit that it is controlled, when the signal of the signal of temperature measurement circuit output and prewired circuit output was suitable, comparator circuit was exported second electric signal, and executive circuit is moved, and cuts off the circuit that it is controlled;
It is characterized in that: described prewired circuit is made of electronic potentiometer.
The utility model has following actively useful effect: this electronic light/temp controller, its temperature preset circuit adopts electronic potentiometer to come setting voltage or current value, the resistance of electronic potentiometer quantitatively accurately, change evenly, resistance and intrinsic standoff ratio can predict, has variable fixed partial pressure ratio, the resistance of electronic potentiometer-change in voltage curve is very consistent with the temperature-change in voltage curve of thermistor, so it is highly sensitive, precision is high, can accomplish the accurate control of temperature.
Description of drawings
Fig. 1 is the structural representation of the utility model one embodiment.
Embodiment
Please refer to Fig. 1, the utility model is a kind of electronic light/temp controller, and its temperature measurement circuit is connected with thermistor RT by resistance R and constituted; Comparator circuit is made of operational amplifier IC1, and prewired circuit is made of electronic potentiometer IC2; Driving circuit is made of triode T, and executive circuit is made of relay J, and its circuit connection structure is:
Resistance R be connected between power supply V+ and the earth potential after thermistor RT connects; Contact between resistance R and the thermistor RT is connected with the inverting input of operational amplifier IC1 through resistance R 1; The output terminal VW of electronic potentiometer IC2 is connected with the in-phase input end of operational amplifier IC1; The preset temperature of electronic potentiometer IC2 changes to be connected with earth potential by K switch 1 or K2 and obtains, preset temperature descended when the cooling signal control input end PD of IC2 was connected with earth potential, preset temperature rose when the intensification signal controlling input end PU of IC2 was connected with earth potential, operational amplifier IC1 output terminal is connected with the base stage of triode T through resistance R 3, the emitter of triode T is connected with earth potential, and the collector of triode T is connected with power supply V+ through the coil of relay J.
Comparator circuit also has compensating circuit, and this compensating circuit is made of feedback resistance R2, and this feedback resistance R2 is connected across between the inversion signal input end and signal output part of operational amplifier IC1.
The model of operational amplifier IC1 can be LM324.
This electronic light/temp controller adopts the special IC IC2 of electronic potentiometer.The model of operational amplifier IC2 can be DW369.During its PU end ground connection, the voltage of output terminal VW raises; During PD end ground connection, the voltage of its output terminal VW reduces.This device with this integrated circuit as temperature controlled setting.
When departing from design temperature when variation of ambient temperature, the two ends of thermistor RT are corresponding to change, and drives relay J by operational amplifier LM324 and triode T, heats or refrigeration plant work thereby make.When environment temperature reached design temperature, operational amplifier LM324 and triode T made the coil blackout of relay J, and the action of the contact of relay J heats or refrigeration plant quits work and make, thereby reaches the purpose of the temperature that controls environment.
Claims (5)
1. electronic light/temp controller, it comprises: be used for environment temperature convert to electric signal temperature measurement circuit, be used to produce the prewired circuit of preset temperature electric signal, be used to judge that whether consistent ambient temperature signal and preset temperature signal comparator circuit, the output terminal of this temperature measurement circuit are connected with the signal input part of comparator circuit, the output terminal of prewired circuit is connected with the reference voltage signal end of comparator circuit, and the output terminal of comparator circuit is by a driving circuit and executive circuit coupling; When the signal of temperature measurement circuit output surpasses the signal of prewired circuit output, comparator circuit is exported first electric signal, make the executive circuit action, connect the circuit that it is controlled, when the signal of exporting when the signal of temperature measurement circuit output and prewired circuit is suitable, comparator circuit is exported second electric signal, makes the executive circuit action, cuts off the circuit that it is controlled;
It is characterized in that: described prewired circuit is made of electronic potentiometer.
2. electronic light/temp controller as claimed in claim 1 is characterized in that, described temperature measurement circuit is by resistance (R) formation of connecting with thermistor (RT); Described comparator circuit is made of operational amplifier (IC1), and described prewired circuit is made of electronic potentiometer (IC2); Described driving circuit is made of triode (T), and described executive circuit is made of relay (J), and its circuit connection structure is:
Resistance (R) be connected between power supply (V+) and the earth potential after thermistor (RT) is connected; Contact between resistance (R) and the thermistor (RT) is connected with the inverting input of operational amplifier (IC1) through resistance (R1); The output terminal (VW) of electronic potentiometer (IC2) is connected with the in-phase input end of operational amplifier (IC1); The intensification signal input part (PU) of electronic potentiometer (IC2) is connected with earth potential through switch (K1), the cooling signal input end (PD) of electronic potentiometer (IC2) is connected with earth potential through switch (K2), operational amplifier (IC1) output terminal is connected with the base stage of triode (T) through resistance (R3), the emitter of triode (T) is connected with earth potential, and the collector of triode (T) is connected with power supply (V+) through the coil of relay (J).
3. electronic light/temp controller as claimed in claim 1, it is characterized in that: described comparator circuit also has compensating circuit, this compensating circuit is made of feedback resistance (R2), and this feedback resistance (R2) is connected across between the inversion signal input end and signal output part of operational amplifier (IC1).
4. electronic light/temp controller as claimed in claim 1 is characterized in that: the model of described operational amplifier (IC1) is LM324.
5. electronic light/temp controller as claimed in claim 1 is characterized in that: the model of described operational amplifier (IC2) is DW369.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420088823 CN2724069Y (en) | 2004-08-23 | 2004-08-23 | Electronic temperature controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420088823 CN2724069Y (en) | 2004-08-23 | 2004-08-23 | Electronic temperature controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2724069Y true CN2724069Y (en) | 2005-09-07 |
Family
ID=35037693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420088823 Expired - Fee Related CN2724069Y (en) | 2004-08-23 | 2004-08-23 | Electronic temperature controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2724069Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102830734A (en) * | 2012-08-24 | 2012-12-19 | 青岛海信宽带多媒体技术有限公司 | Equipment temperature regulating circuit |
| CN103034268A (en) * | 2012-11-30 | 2013-04-10 | 河南省电力公司驻马店供电公司 | Control room environment intelligent management device of unattended transformer substation |
| CN103853206A (en) * | 2012-11-29 | 2014-06-11 | 深圳市海洋王照明工程有限公司 | Power supply system and heat dissipation circuit thereof |
| CN104699142A (en) * | 2015-02-11 | 2015-06-10 | 广东易事特电源股份有限公司 | Ups automatic heating circuit |
| CN105068579A (en) * | 2015-07-31 | 2015-11-18 | 重庆市志益鑫电子科技有限公司 | Constant-temperature control circuit for plant culture |
| CN105807813A (en) * | 2014-12-31 | 2016-07-27 | 无锡汉思特电器科技有限公司 | Electric ceramic cooker control circuit |
| CN106196269A (en) * | 2016-08-16 | 2016-12-07 | 珠海格力电器股份有限公司 | The control circuit of electric heater and control method |
| CN106681419A (en) * | 2017-01-05 | 2017-05-17 | 成都芯禾粮油食品有限公司 | Edible oil blending device |
| CN107643503A (en) * | 2017-07-31 | 2018-01-30 | 惠州市德赛西威汽车电子股份有限公司 | The calibration detection circuit and method of a kind of potentiometer |
| CN117555369A (en) * | 2023-12-30 | 2024-02-13 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Temperature control system and method and electronic equipment |
-
2004
- 2004-08-23 CN CN 200420088823 patent/CN2724069Y/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102830734B (en) * | 2012-08-24 | 2014-10-29 | 青岛海信宽带多媒体技术有限公司 | Equipment temperature regulating circuit |
| CN102830734A (en) * | 2012-08-24 | 2012-12-19 | 青岛海信宽带多媒体技术有限公司 | Equipment temperature regulating circuit |
| CN103853206A (en) * | 2012-11-29 | 2014-06-11 | 深圳市海洋王照明工程有限公司 | Power supply system and heat dissipation circuit thereof |
| CN103034268A (en) * | 2012-11-30 | 2013-04-10 | 河南省电力公司驻马店供电公司 | Control room environment intelligent management device of unattended transformer substation |
| CN103034268B (en) * | 2012-11-30 | 2015-09-23 | 河南省电力公司驻马店供电公司 | Unattended substation pulpit ambient intelligence management devices |
| CN105807813A (en) * | 2014-12-31 | 2016-07-27 | 无锡汉思特电器科技有限公司 | Electric ceramic cooker control circuit |
| CN104699142B (en) * | 2015-02-11 | 2017-04-05 | 广东易事特电源股份有限公司 | UPS automatic heating circuits |
| CN104699142A (en) * | 2015-02-11 | 2015-06-10 | 广东易事特电源股份有限公司 | Ups automatic heating circuit |
| CN105068579A (en) * | 2015-07-31 | 2015-11-18 | 重庆市志益鑫电子科技有限公司 | Constant-temperature control circuit for plant culture |
| CN105068579B (en) * | 2015-07-31 | 2017-06-13 | 重庆市志益鑫电子科技有限公司 | A kind of constant temperature control circuit for plant culture |
| CN106196269A (en) * | 2016-08-16 | 2016-12-07 | 珠海格力电器股份有限公司 | The control circuit of electric heater and control method |
| CN106196269B (en) * | 2016-08-16 | 2019-03-08 | 珠海格力电器股份有限公司 | The control circuit and control method of electric heater |
| CN106681419A (en) * | 2017-01-05 | 2017-05-17 | 成都芯禾粮油食品有限公司 | Edible oil blending device |
| CN107643503A (en) * | 2017-07-31 | 2018-01-30 | 惠州市德赛西威汽车电子股份有限公司 | The calibration detection circuit and method of a kind of potentiometer |
| CN117555369A (en) * | 2023-12-30 | 2024-02-13 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Temperature control system and method and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |