CN209103169U - A kind of high accuracy temperature control device - Google Patents
A kind of high accuracy temperature control device Download PDFInfo
- Publication number
- CN209103169U CN209103169U CN201920056383.2U CN201920056383U CN209103169U CN 209103169 U CN209103169 U CN 209103169U CN 201920056383 U CN201920056383 U CN 201920056383U CN 209103169 U CN209103169 U CN 209103169U
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- temperature
- temperature control
- temperature measurement
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- semiconductor cooler
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Abstract
The utility model relates to a kind of high accuracy temperature control devices, including insulation construction, temperature measurement module, temperature control module and signal processor, the temperature measurement module is made of high precision measuring temperature probe and temperature measurement circuit, high precision measuring temperature probe is connected with temperature measurement circuit, the temperature control module is made of semiconductor cooler and control circuit, and semiconductor cooler is connected with control circuit；Signal processor is connected with the control circuit of the temperature measurement circuit of temperature control module and temperature measurement module respectively, and semiconductor cooler, high precision measuring temperature probe are separately mounted in the shell of insulation construction.The heating capacity or refrigerating capacity that the temperature adjustment temperature control module that signal processor is detected by temperature measurement module releases dynamically adjust the temperature inside insulation construction in real time, reach 0.3 DEG C of temperature fluctuation peak-to-peak value, the high-precision requirement that 0.03 DEG C of root mean square.The utility model effectively controls the operating temperature of receiver in microwave radiometer, makes operation of receiver in stable environment, and the present apparatus can effectively be generalized to other field.
Description
Technical field
The utility model belongs to temperature automatically controlled field, is related to a kind of high accuracy temperature control device.
Background technique
Microwave radiometer is a kind of for long-term continuous observation atmospheric radiation intensity, the valuable instrument of the important meteorological index of inverting
Device.Its core component microwave receiver works competence exertion optimal performance under the conditions of high stable temperature.In order to significantly mention
The performance of high microwave radiometer needs to carry out high-precision temperature control to receiver.
Temperature regulating device in traditional equipment uses open loop control mode, and structure is simple, and precision is low, poor accuracy, when control
Between it is long, some devices can not even freeze, and seriously affect the accuracy of observation of microwave radiometer.
Summary of the invention
The utility model is directed to the drawbacks described above in the presence of the prior art, provides a kind of height that can be improved detection accuracy
Precision temperature regulating device.
Now the technical solution of the utility model is described below:
A kind of high accuracy temperature control device, including four insulation construction, temperature measurement module, temperature control module and signal processor portions
Point, it is characterised in that: the temperature measurement module is made of high precision measuring temperature probe and temperature measurement circuit, and high precision measuring temperature is popped one's head in and surveyed
Circuit temperature is connected, and the temperature control module is made of semiconductor cooler and control circuit, semiconductor cooler and control circuit
It is connected；Signal processor is connected with the control circuit of the temperature measurement circuit of temperature control module and temperature measurement module respectively, and the half of temperature control module
Conductor refrigerator, temperature measurement module high precision measuring temperature probe be separately mounted in the shell of insulation construction.
The insulation construction includes shell, radiate gear piece, copper sheet, insulating glass wool, copper billet, radiator fan, in shell
Side lower surface design has heat dissipation gear piece, and radiator fan is installed below heat dissipation gear piece, places copper billet above radiation tooth piece, copper billet is fixed
Semiconductor cooler is placed above radiation tooth on piece, copper billet；Place copper sheet in the top of semiconductor cooler；High precision measuring temperature is visited
Head is mounted on the slot on the inside of copper sheet, and there are behind installation receiver module space between shell above copper sheet, remaining space fills
Fill out insulating glass wool.
The shell is made using metallic aluminum material.
The insulation construction further includes thermal conductive silicon pad, and thermal conductive silicon pad, copper sheet are lined between semiconductor cooler and copper billet
Thermal conductive silicon pad is lined between semiconductor cooler.
The utility model compared with prior art the advantages of be: largely fill insulating glass wool in insulation construction, can have
Effect reduces receiver and extraneous heat exchange；The copper sheet of large area can guarantee that heat quickly passes to receiver；High-precision temperature
The accuracy and precision of temperature detection can be effectively ensured in the application of probe；Voltage output and the adjustable of duty ratio can optimize semiconductor
The heating refrigeration precision of refrigerator；Entire closed-loop control system has higher stability and temperature control essence than open-loop control system
Degree.
Detailed description of the invention
Fig. 1 is the structure control block diagram of the utility model.
Fig. 2 is the insulation construction schematic diagram of the utility model.
Fig. 3 is the test data schematic diagram of the utility model.
Specific embodiment
In conjunction with attached drawing, the utility model will be further described.
To make those skilled in the art better understand the technical solution of the utility model, with reference to the accompanying drawings and examples
The utility model is described in further detail.The insulation construction of the utility model, temperature measurement module, temperature control module and signal processing
Device is existing structure.High-precision temperature probe in temperature measurement module congratulates Lin Shi four-wire system PT1000 high-precision platinum heat using Germany
Electric resistance sensor, temperature measurement circuit use the high accuracy digital measurement of temperature system LTC2983 of ADI company production, temperature control module
In Switching Power Supply use TI company production switching power source chip TPS54560, digital potentiometer using ADI company production
AD5270BCPZ-100.Signal processor uses Cyclone IV Series FPGA.The portion that the utility model is not described specifically
Part is existing structure.
As shown in Figure 1 and Figure 2, a kind of high accuracy temperature control device, including insulation construction, temperature measurement module, temperature control module and signal
Four parts of processor, it is characterised in that: the temperature measurement module is made of high precision measuring temperature probe and temperature measurement circuit, high-precision
Temperature probe is connected with temperature measurement circuit, and the temperature control module is made of semiconductor cooler and control circuit, semiconductor refrigerating
Device is connected with control circuit；Signal processor is connected with the control circuit of the temperature measurement circuit of temperature control module and temperature measurement module respectively,
The semiconductor cooler of temperature control module, the high precision measuring temperature probe of temperature measurement module are separately mounted in the shell of insulation construction.
As shown in Fig. 2, the insulation construction include aluminum hull 1, heat dissipation gear piece 4, copper sheet 10, insulating glass wool 3, copper billet 6,
Radiator fan 8, thermal conductive silicon pad 5, the design of 1 inside bottom surface of aluminum hull have heat dissipation gear piece 4, install radiator fan below the gear piece 4 that radiates
8, copper billet 6 is placed above the gear piece 4 that radiates, copper billet 6 is fixed on heat dissipation gear piece 4, place semiconductor cooler 7 above copper billet 6, half
Thermal conductive silicon pad 5 is lined between conductor refrigerator 7 and copper billet 6；Place copper sheet 10, copper sheet 10 and half in the top of semiconductor cooler 7
Thermal conductive silicon pad 5 is lined between conductor refrigerator 7；High precision measuring temperature probe 9 is mounted on the slot of 10 inside of copper sheet, 10 top of copper sheet
There are behind installation 2 space of receiver module between aluminum hull 1, remaining space fills insulating glass wool 3.
Insulation construction in the high accuracy temperature control device is specific as follows:
Since the lower surface of insulation construction is aluminum heat dissipation gear piece, radiator fan is installed below heat dissipation gear piece.Radiator fan
Using the pitch space of heat dissipation gear piece as heat dissipation wind channel.
Be copper billet above radiation tooth piece, be screwed between copper billet and heat dissipation gear piece, guarantee copper billet and radiation tooth it
Between it is closely coupled, be semiconductor cooler above copper billet, contacted between semiconductor cooler and copper billet by thermal conductive silicon pad, and is uniform
Smear heat-conducting silicone grease.Purpose is to come into full contact with semiconductor cooler, copper billet and radiation tooth, so as to externally sufficiently heat dissipation.
The top of semiconductor cooler is large area copper sheet, is connect between copper sheet and semiconductor cooler by thermal conductive silicon pad
Touching, and sufficiently smear heat-conducting silicone grease.Purpose is to make to come into full contact between copper sheet and semiconductor cooler, so as to semiconductor refrigerating
Heating capacity or refrigerating capacity Quick uniform are passed to entire copper sheet by device.
The inside of copper sheet is slotted, and installation high precision measuring temperature probe monitors copper plate temperature.
The top of copper sheet is temperature control space, built in receiver module.It is screwed between copper sheet and receiver module,
To ensure sufficient heat exchange between copper sheet and receiver.
The top of receiver is aluminium shell, and aluminium shell is the upper surface of insulation construction.
Full insulating glass wool is filled inside insulation construction, to ensure that receiver directly can not carry out heat with the external world by shell
Exchange.
Temperature measurement module in the high accuracy temperature control device is specific as follows:
Thermometric in high accuracy temperature control device includes high precision measuring temperature probe and temperature measurement circuit two parts.
High precision measuring temperature probe, which is placed in, to be used to monitor the temperature at copper sheet at copper sheet internal notches.
High precision measuring temperature probe is placed in different location inside receiver, for the temperature at check receiver different temperatures.
Temperature value is converted to analog voltage by high-precision temperature probe, and passes to thermometric electricity by the silver-plated cable of high temperature
Road, temperature measurement circuit convert voltages into digital temperature value by Analog-digital Converter technology and compensate what the silver-plated cable of high temperature introduced
Error.
Signal processor in the high accuracy temperature control device realizes that function is specific as follows:
Signal processor reads digital temperature value obtained by temperature measurement circuit, compared with target temperature, in conjunction with ratio, and differential,
Integral control algorithm issues temperature control instruction to temperature-adjusting circuit.
Temperature control module in the high accuracy temperature control device is specific as follows:
Temperature control module in high accuracy temperature control device realizes adjustment voltage output, realizes the function of polarity of voltage switching.
Switch power source output voltage is arranged by adjusting the mode of a digital potentiometer resistance in temperature control module.
Control module adjusts the output polarity and duty ratio of Switching Power Supply by one group of H bridge of control.
It is the test data schematic diagram of the utility model referring to Fig. 3.Intercept 24 hours constant temperature test datas, environment temperature
20 DEG C nearby when, target control temperature is 50 DEG C of test result.Referring to table 1, each temperature measuring point can see by analysis
Temperature fluctuation peak-to-peak value is not more than 0.3 DEG C, and root mean square is not more than 0.03 DEG C, meets system requirements.
Table 1
Claims (4)
1. a kind of high accuracy temperature control device, including four insulation construction, temperature measurement module, temperature control module and signal processor parts,
It is characterized by: the temperature measurement module is made of high precision measuring temperature probe and temperature measurement circuit, high precision measuring temperature probe and thermometric
Circuit is connected, and the temperature control module is made of semiconductor cooler and control circuit, semiconductor cooler and control circuit phase
Even；Signal processor is connected with the control circuit of the temperature measurement circuit of temperature control module and temperature measurement module respectively, and temperature control module is partly led
Chiller, temperature measurement module high precision measuring temperature probe be separately mounted in the shell of insulation construction.
2. a kind of high accuracy temperature control device according to claim 1, it is characterised in that: the insulation construction includes shell
Body, heat dissipation gear piece, copper sheet, insulating glass wool, copper billet, radiator fan, case inside lower surface design have heat dissipation gear piece, radiation tooth
Radiator fan is installed below piece, copper billet is placed above radiation tooth piece, copper billet is fixed on radiation tooth on piece, places above copper billet and partly lead
Chiller；Place copper sheet in the top of semiconductor cooler；High precision measuring temperature probe is mounted on the slot on the inside of copper sheet, on copper sheet
There are behind installation receiver module space between side and shell, remaining space fills insulating glass wool.
3. a kind of high accuracy temperature control device according to claim 2, it is characterised in that: the shell uses metallic aluminum material
It is made.
4. a kind of high accuracy temperature control device according to claim 2 or 3, it is characterised in that: the insulation construction also wraps
Thermal conductive silicon pad is included, thermal conductive silicon pad is lined between semiconductor cooler and copper billet, is lined between copper sheet and semiconductor cooler thermally conductive
Silicon pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920056383.2U CN209103169U (en) | 2019-01-14 | 2019-01-14 | A kind of high accuracy temperature control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920056383.2U CN209103169U (en) | 2019-01-14 | 2019-01-14 | A kind of high accuracy temperature control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209103169U true CN209103169U (en) | 2019-07-12 |
Family
ID=67163916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920056383.2U Active CN209103169U (en) | 2019-01-14 | 2019-01-14 | A kind of high accuracy temperature control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209103169U (en) |
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2019
- 2019-01-14 CN CN201920056383.2U patent/CN209103169U/en active Active
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