CN207457764U - A kind of ultralow temperature temperature controller system - Google Patents
A kind of ultralow temperature temperature controller system Download PDFInfo
- Publication number
- CN207457764U CN207457764U CN201721420861.0U CN201721420861U CN207457764U CN 207457764 U CN207457764 U CN 207457764U CN 201721420861 U CN201721420861 U CN 201721420861U CN 207457764 U CN207457764 U CN 207457764U
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- CN
- China
- Prior art keywords
- temperature
- input terminal
- electronic switch
- current source
- platinum resistance
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
A kind of ultralow temperature temperature controller system, including thermostat circuit plate and the platinum resistance constant-current source circuit being located in thermostat circuit plate, it is characterized in that the input terminal of the output termination sampling electronic switch of platinum resistance constant-current source circuit, two output terminations of sampling electronic switch put the in-phase input end for calculating amplifier, two groups of output terminals for putting calculation amplifier connect the input terminal of microcontroller, single-chip microcomputer output distinguishes buzzer taking alarm, the input terminal of the relay of LCD display input terminal and control compressor, the thermostat circuit plate is equipped with reserve battery, reserve battery is respectively platinum resistance constant-current source circuit, sample electronic switch, put calculation amplifier, microcontroller, alarm buzzer, LCD display, relay provides stand-by power supply, convenient for checking whether the thing stored in refrigerator or refrigerator meets storage temperature when having a power failure.The utility model is suitble to also detectable after alternating current power down and display degree temperature, can check article temperature in real time, whether monitoring article storage temperature is up to standard, and has warning prompt sound.
Description
Technical field
The utility model is related to a kind of ultralow temperature temperature controller systems.
Background technology
Refrigerator or refrigerator freezing pattern are suitable for minus 30 degree or more before this, because drug or seafood need to be protected with lower temperature
Hide, but original temperature controller system reconnaissance NTC thermistor, LCD shows, reserve battery combine measure temperature and
The refrigerating capacity of compressor is controlled, this mode is only applicable to minus 30 degree or more of thermometric control, and in this context, my company develops
Adaptation refrigerator or minus 60 degree of refrigerator~minus 100 degree of temperature control systems, no matter have on thermometric or in function great prominent
It is broken, the platinum sensor of use can detect minus 40 degree~it is 100 degree minus, temperature controller temperature-controlled precision height, temperature measurement stability are stronger, warm
Degree display is suitble to also detectable and display degree temperature after alternating current power down, can check article in real time using low-power consumption LCD screen
Temperature, whether monitoring article storage temperature is up to standard, and has warning prompt sound.
Utility model content
Its purpose of the utility model, which is that, provides a kind of ultralow temperature temperature controller system, solves original temperature control
Device system reconnaissance NTC thermistor processed, LCD are shown, reserve battery combination is come the refrigeration that measures temperature and control compressor
The problem of amount, this mode is only applicable to minus 30 degree or more thermometric control.
It adopts the technical scheme that achieve the above object, a kind of ultralow temperature temperature controller system, including temperature controller
Circuit board and the platinum resistance constant-current source circuit being located in thermostat circuit plate, it is characterized in that the output terminal of platinum resistance constant-current source circuit
The input terminal of sampling electronic switch is connect, samples the in-phase input end of two output termination operational amplifiers of electronic switch, computing is put
Two groups of output terminals of big device connect the input terminal of microcontroller, and single-chip microcomputer output difference buzzer taking alarm, LCD display are defeated
Enter end and control the input terminal of the relay of compressor, the thermostat circuit plate is equipped with reserve battery, reserve battery difference
For platinum resistance constant-current source circuit, sampling electronic switch, operational amplifier, microcontroller, alarm buzzer, LCD display, after
Electric appliance provides stand-by power supply, convenient for checking whether the thing stored in refrigerator or refrigerator meets storage temperature when having a power failure.
Advantageous effect
The utility model has the following advantages compared with prior art.
1st, the system temperature-measuring range is wider, using platinum resistor temperature measuring, detectable minus 100 degree~100 degree positive；
2nd, temperature-controlled precision is high, reachable ± 0.3 DEG C of temperature measurement accuracy；
3rd, performance is stablized, and switches over multi-channel sampling signal using electronic switch, eliminates element and circumstance temperature error；
4th, safety, have a power failure thermometric and the display that can be provided after having alarm sound to prompt and have a power failure more than when 16 is small.
Description of the drawings
Below in conjunction with attached drawing, the utility model is described in further detail.
Fig. 1 is the utility model electronic circuit schematic；
Fig. 2 is the utility model circuit board figure.
Specific embodiment
The system includes thermostat circuit plate 1 and the platinum resistance constant-current source circuit 2 being located in thermostat circuit plate 1, such as Fig. 1
Shown, the output termination of the platinum resistance constant-current source circuit 2 samples the input terminal of electronic switch 3, and the two of sampling electronic switch 3 are defeated
Go out to terminate the in-phase input end of operational amplifier 4, two groups of output terminals of operational amplifier 4 connect the input terminal of microcontroller 5, microcontroller
The input terminal of the relay 8 of 5 output terminals difference buzzer 6 taking alarm, 7 input terminal of LCD display and control compressor, institute
Thermostat circuit plate 1 is stated equipped with reserve battery 9, reserve battery 9 is respectively platinum resistance constant-current source circuit 2, sampling electronic switch
3rd, operational amplifier 4, microcontroller 5, alarm buzzer 6, LCD display 7, relay 8 provide stand-by power supply, convenient for having a power failure
When check whether the thing stored in refrigerator or refrigerator meets storage temperature.
The utility model is connected with the mains in refrigerator or refrigerator after startup, as shown in Fig. 2, compressor is under the control of temperature controller
Start to start cooling, when dropping to the temperature of temperature controller setting, 8 contact of temperature controller internal relay disconnects, and compressor stops work
To make, evaporator of refrigerator temperature is begun to ramp up, when temperature rises to the connection temperature of temperature controller setting, touching in temperature controller electric appliance
Point is connected, and compressor start starts to cool down, and is so continuously started and is stopped compressor, the temperature in refrigerator or refrigerator body
It spends constant in a temperature range；The temperature in babinet is shown in fact after power failure, when LCD can continue, whether to judge article
Beyond storage temperature scope.
Temp testing controlling system described in the utility model has important breakthrough regardless of on thermometric or in function, use
Platinum sensor can detect minus 40 degree~it is 100 degree minus, temperature controller temperature-controlled precision is high, temperature measurement stability is stronger, temperature display is adopted
It is low-power consumption LCD screen, is suitble to also detectable and display degree temperature after alternating current power down, can check article temperature in real time, monitors
Whether article storage temperature is up to standard, and has warning prompt sound.
Claims (1)
1. a kind of ultralow temperature temperature controller system, including thermostat circuit plate（1）And it is located at thermostat circuit plate（1）In platinum
Resistance constant-current source circuit（2）, which is characterized in that the platinum resistance constant-current source circuit（2）Output termination sampling electronic switch（3）
Input terminal, sample electronic switch（3）Two output termination operational amplifiers（4）In-phase input end, operational amplifier（4）'s
Two groups of output terminals connect microcontroller（5）Input terminal, microcontroller（5）Output terminal distinguishes buzzer taking alarm（6）, LCD display
（7）Input terminal and the relay for controlling compressor（8）Input terminal, the thermostat circuit plate（1）It is equipped with reserve battery
（9）, reserve battery（9）Respectively platinum resistance constant-current source circuit（2）, sampling electronic switch（3）, operational amplifier（4）, microcontroller
（5）, alarm buzzer（6）, LCD display（7）, relay（8）There is provided stand-by power supply, convenient for have a power failure when check refrigerator or
Whether the thing stored in refrigerator meets storage temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721420861.0U CN207457764U (en) | 2017-10-31 | 2017-10-31 | A kind of ultralow temperature temperature controller system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721420861.0U CN207457764U (en) | 2017-10-31 | 2017-10-31 | A kind of ultralow temperature temperature controller system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207457764U true CN207457764U (en) | 2018-06-05 |
Family
ID=62282307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721420861.0U Expired - Fee Related CN207457764U (en) | 2017-10-31 | 2017-10-31 | A kind of ultralow temperature temperature controller system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207457764U (en) |
-
2017
- 2017-10-31 CN CN201721420861.0U patent/CN207457764U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180605 Termination date: 20211031 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |