CN217640034U - Be used for infrared detector black body control by temperature change intelligent system - Google Patents
Be used for infrared detector black body control by temperature change intelligent system Download PDFInfo
- Publication number
- CN217640034U CN217640034U CN202121746225.3U CN202121746225U CN217640034U CN 217640034 U CN217640034 U CN 217640034U CN 202121746225 U CN202121746225 U CN 202121746225U CN 217640034 U CN217640034 U CN 217640034U
- Authority
- CN
- China
- Prior art keywords
- temperature
- control unit
- infrared detector
- intelligent
- black body
- Prior art date
- 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.)
- Active
Links
Images
Landscapes
- Radiation Pyrometers (AREA)
Abstract
The utility model discloses an intelligent temperature control system for an infrared detector black body, which comprises a control unit, an A/D conversion unit, a plurality of paths of field effect transistors and/or transistors, a plurality of paths of temperature sensors, a plurality of paths of heating modules and a power supply; the heating modules are uniformly distributed in a graphite area of the black body, the temperature sensors correspond to the heating modules one to one, the temperature of the graphite area where the corresponding heating module is located is collected, and a temperature signal is transmitted to the control unit through the A/D conversion unit; and the control unit is respectively connected with the multi-path heating modules through multi-path field effect tubes and/or transistors. The intelligent system realizes the accurate control of the temperature of the black body, reduces the response time, simplifies the circuit structure and greatly reduces the control cost.
Description
Technical Field
The utility model relates to a be used for infrared detector temperature calibration black body temperature control system, more specifically relates to a be used for infrared detector black body temperature control intelligent system.
Background
The temperature difference of each area of graphite on the black body matched with the infrared detector needs to be controlled within +/-0.1 ℃. The requirement on the accuracy control of the blackbody temperature is very high because the accuracy of the infrared detector is directly influenced if the temperature of each area on the graphite is changed greatly.
The temperature of the black body is usually controlled by a temperature controller, however, the temperature control channel is limited, the rapid response of the temperature of each region on the surface of the graphite block on the black body is difficult to realize only by one temperature control, and if the rapid response cannot be realized, the temperature of each region of the graphite is easy to fluctuate greatly.
Meanwhile, the prior art has high control cost. For example, CN102981529a, where the a/D signal needs a pre-amplifier circuit and a differential large signal for processing, the circuit module is complex; and the control heating circuit part adopts solid state relay, and its price is with high costs and is unfavorable for the volume production.
SUMMERY OF THE UTILITY MODEL
This scheme provides one kind for infrared detector black body temperature control intelligent system in order to overcome prior art's defect, and this system can not only accurate regulation and control black body temperature to the response speed piece, low cost simultaneously.
The utility model provides an intelligent system for infrared detector black body temperature control, which comprises a control unit, an A/D conversion unit, a plurality of paths of field effect tubes and/or transistors, a plurality of paths of temperature sensors, a plurality of paths of heating modules and a power supply; the heating modules are uniformly distributed in a graphite area of the black body, the temperature sensors correspond to the heating modules one to one, the temperature of the graphite area where the corresponding heating module is located is collected, and a temperature signal is transmitted to the control unit through the A/D conversion unit; and the control unit is respectively connected with the multi-path heating modules through multi-path field effect tubes and/or transistors.
In this scheme, with the bulk temperature control of black body, the conversion is to the control that refines of the different zone temperature of graphite, through the temperature acquisition of multizone, the temperature control of multizone, adopts the control unit to carry out holistic integration, has realized the accurate closed loop regulation and control of black body temperature, and its circuit structure retrencies, greatly reduced control cost.
Further, MOS tubes are adopted in the multi-path field effect tubes and/or the transistors, the control unit adopts an MCU control unit, and the MCU control unit is connected with the multi-path MOS tubes through a multi-path change-over switch. In the scheme, the use of the multi-way change-over switch increases the driving performance of the system to the MOS tube.
Further, the multiplexer employs HD74HC00P.
Furthermore, the multi-way switch is connected with the grid electrode of the MOS tube, the drain electrode of the MOS tube is connected with the heating module, and the source electrode of the MOS tube is connected with the power supply.
Furthermore, the field effect tube, the heating module and the temperature sensor are all provided with four paths; the heating modules are uniformly distributed in the middle of four sides of the graphite.
Furthermore, the heating module and the graphite are assembled into a whole, and the temperature sensor and the heating module are assembled into a whole, so that the temperature sensor can monitor the temperature change condition of the heating module in real time and transmit a temperature change signal to the MCU control unit in time.
Further, this scheme still includes the LCD module of being connected with the control unit for show each regional temperature variation of graphite, make temperature control more directly perceived.
Furthermore, the scheme also comprises a key connected with the control unit and used for inputting the target temperature required by the infrared detector so that the MCU control unit can compare the target temperature with the fed-back real-time temperature for reference.
Compared with the prior art, the beneficial effects of the utility model are that:
according to the scheme, the MCU control unit is adopted to control the on-off of the MOS tube to indirectly control the multi-path heating module, so that the balanced heating of each region of the graphite block is realized, and the response time is reduced; the multi-channel temperature sensor monitors and feeds back to the control unit in real time, and controls the heating modules in each area of the graphite block through a comparison algorithm, so that the temperature fluctuation range is reduced, and the aim of accurate temperature control is fulfilled; the display device can directly observe the temperature of each area to realize the externalization of temperature control; and the circuit structure is simplified, and the commercial popularization is facilitated.
Drawings
Fig. 1 is a schematic circuit diagram of an intelligent blackbody temperature control system for an infrared detector in embodiment 1.
Fig. 2 is a schematic view showing the installation of the temperature sensor and the heat generating module in embodiment 1.
Detailed Description
To facilitate understanding of the present invention, the present invention will be described more fully and specifically with reference to the accompanying drawings and preferred embodiments, but the scope of the present invention is not limited to the specific embodiments described below.
Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.
Unless otherwise specifically stated, various devices and equipments and the like used in the present invention can be commercially available or can be prepared by an existing method.
Example 1
The utility model provides a be used for infrared detector black body control by temperature change intelligent system.
As shown in fig. 1, the intelligent system includes an MCU control unit, an a/D conversion chip, a plurality of temperature sensors, a plurality of switches, a plurality of field effect transistors, a plurality of heating modules, a power supply, and a display device. The A/D conversion chip, the field effect tube, the multi-way conversion switch and the display device are respectively connected with the MCU control unit. In the embodiment, the temperature sensor, the field effect transistor and the heating module are all four paths, and the field effect transistor is an MOS (metal oxide semiconductor) transistor. Four temperature sensors TC1, TC2, TC3 and TC4 are connected with the A/D conversion chip, and four MOS tubes are respectively connected with four heating modules T1, T2, T3 and T4 in series.
Specifically, the multiplexer is a logic control chip, and the HD74HC00P is adopted in this embodiment. Because the MCU control unit directly drives the load can not be strong, the control of the multipath MOS tube is realized by controlling the NOT gate.
The power supply comprises DC5V and DC12V, wherein the DC5V supplies power to the display device, the MCU control unit, the A/D conversion chip and the multi-way conversion switch respectively, and the DC12V supplies power to the heating module.
The multi-way change-over switch is connected with the grid electrode of the MOS tube, the drain electrode of the MOS tube is connected with the heating module, and the source electrode of the MOS tube is connected with the positive electrode of the DC12V power supply. The MCU control unit indirectly controls the grid of the MOS tube by controlling the multi-way change-over switch, so that on-off control of the MOS tube is realized, and the purpose of regulating and controlling the surface temperature of graphite by controlling the working time of the heating module is achieved. In the embodiment, a MOS transistor is used, and in practical application, a transistor may be used to replace the MOS transistor for control.
As shown in fig. 2, the heating module and the graphite block are assembled into a whole and arranged in the middle of four sides of the graphite; the temperature sensors correspond to the heating modules one to one and are integrally installed with the heating module group, and the temperature change signals of the response area are transmitted to the control unit at the first time.
The working principle is as follows: the surface temperature of the graphite is input into the A/D conversion chip in time through analog signals of the temperature sensor, and is converted into digital signals to be output to the MCU control unit. The MCU control unit indirectly controls the on-off of the field effect tube through the multi-way change-over switch so as to control the corresponding heating module, and the accurate control of the temperature of each graphite area is realized.
The display device adopts an LCD module, and the control unit is connected with the LCD module and can display temperature fluctuation in real time so as to know the temperature change condition of each area.
The embodiment is also provided with keys connected with the MCU control unit, such as a keyboard. The keyboard inputs the target temperature required by the infrared detector, and the difference between the actual temperature and the set temperature is compared through an algorithm. If the temperature of a certain region is higher than the set temperature, disconnecting the signal of the MOS tube of the corresponding region; and if the temperature of a certain region is lower than the set temperature, opening the MOS tube of the corresponding region to enable the heating module of the corresponding region to start working.
Specifically, for example, the temperature required by the infrared detector is set to be 37.5 ℃, the control unit judges whether the input set temperature is the target temperature, if not, the control unit controls the LCD module to display the current temperature, and if so, the control unit controls the conduction of the MOS tube to enable the heating device to start heating; the control unit receives real-time feedback temperature from the temperature sensor, judges whether the temperature of the temperature sensor is greater than 37.5 ℃, if not, keeps a heating mode, and if the temperature of the temperature sensor is greater than 37.5 ℃, controls the corresponding MOS tube to be disconnected so as to stop heating of the corresponding region; judging whether the temperature of the temperature sensor is less than 37.5 ℃, if so, opening the heating module of the corresponding area, and if not, returning to the judgment degree to judge whether the temperature of the temperature sensor is more than 37.5 ℃ for recycling; and judging whether the temperature sensor is 37.5 ℃, if so, disconnecting the heating module of the corresponding area, and if not, opening the heating module of the corresponding area.
In the embodiment, four paths of temperature sampling in different areas and four paths of soft control heating modules are adopted, so that the temperature control precision and the response speed are improved, the circuit is simplified, and the cost is reduced. It is understood that it is within the scope of the present application to extend the multiple heating modules and the temperature sampling circuit according to the principles of the present disclosure.
The embodiment overcomes the defects that in the prior art, the control multiple channels are limited, the balanced and accurate temperature control of each area of graphite on the black body cannot be realized, the temperature fluctuation of each area is large, the control cost is high and the like.
It should be understood that the above-mentioned embodiments are only examples for clearly illustrating the technical solutions of the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection of the claims of the present invention.
Claims (8)
1. A black body temperature control intelligent system for an infrared detector is characterized by comprising
The device comprises a control unit, an A/D conversion unit, a multi-channel field effect tube and/or transistor, a multi-channel temperature sensor, a multi-channel heating module and a power supply; the heating modules are uniformly distributed in a graphite area of the black body, the temperature sensors correspond to the heating modules one to one, the temperature of the graphite area where the corresponding heating module is located is collected, and a temperature signal is transmitted to the control unit through the A/D conversion unit; and the control unit is respectively connected with the multi-path heating modules through multi-path field effect tubes and/or transistors.
2. The intelligent blackbody temperature control system for the infrared detector according to claim 1, wherein MOS transistors are used in the multiple field effect transistors and/or the transistors, the control unit is an MCU control unit, and the MCU control unit is connected to the multiple MOS transistors through a multiplexer.
3. The intelligent blackbody temperature control system for the infrared detector as claimed in claim 2, wherein the multi-way switch adopts HD74HC00P.
4. The intelligent black body temperature control system for the infrared detector according to claim 2, wherein the multiplexer is connected to a gate of the MOS transistor, a drain of the MOS transistor is connected to the heating module, and a source of the MOS transistor is connected to the power supply.
5. The intelligent blackbody temperature control system for the infrared detector as claimed in claim 4, wherein the field effect transistor, the heating module and the temperature sensor are all provided with four ways; the heating modules are uniformly distributed in the middle of four sides of the graphite.
6. The intelligent black body temperature control system for the infrared detector as claimed in claim 1, wherein the heating module is integrally assembled with graphite, and the temperature sensor is integrally assembled with the heating module.
7. The intelligent blackbody temperature control system for the infrared detector as claimed in any one of claims 1 to 6, wherein the intelligent system further comprises an LCD module connected with the control unit.
8. The intelligent blackbody temperature control system for an infrared detector according to claim 7, further comprising a button connected to the control unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121746225.3U CN217640034U (en) | 2021-07-29 | 2021-07-29 | Be used for infrared detector black body control by temperature change intelligent system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121746225.3U CN217640034U (en) | 2021-07-29 | 2021-07-29 | Be used for infrared detector black body control by temperature change intelligent system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217640034U true CN217640034U (en) | 2022-10-21 |
Family
ID=83619452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121746225.3U Active CN217640034U (en) | 2021-07-29 | 2021-07-29 | Be used for infrared detector black body control by temperature change intelligent system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217640034U (en) |
-
2021
- 2021-07-29 CN CN202121746225.3U patent/CN217640034U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102306903B (en) | Digital large power semiconductor laser power supply | |
| CA2474413A1 (en) | Reliable outdoor instrument cooling system | |
| CN104833040A (en) | Temperature control method of air conditioner system and temperature controller | |
| CN103697214A (en) | Intelligent valve and control method thereof | |
| CN108666856A (en) | Power stability type solid state laser and control method | |
| CN217640034U (en) | Be used for infrared detector black body control by temperature change intelligent system | |
| CN109582065B (en) | Temperature control method based on thermoelectric effect | |
| CN211698735U (en) | Control system of semiconductor temperature adjusting device | |
| CN102788445A (en) | Semiconductor refrigeration plate drive circuit, temperature control device and refrigerator | |
| CN101221450B (en) | Constant temperature equipment for instrument | |
| CN108666855A (en) | Laser crystal bilateral temperature regulating device | |
| CN208336799U (en) | A kind of laser crystal bilateral temperature regulating device | |
| CN103423508B (en) | Control unit and control method for thermal electric regulating valve | |
| CN206657254U (en) | A kind of automatic temperature control system applied to temperature control test environment case | |
| CN106545971A (en) | Air-conditioner control method, controller, air-conditioner and air conditioner control system | |
| CN105466064B (en) | A kind of linear sterlin refrigerator driving method of general separated type and driving circuit | |
| CN104332808A (en) | Control device for adjusting laser crystal temperature through semiconductor peltier | |
| CN116094096A (en) | Protection circuit capable of preventing backflow and reverse connection and supplying power in multiple paths in parallel and use method thereof | |
| CN2276643Y (en) | Intellgence temp. fuzzy control instrument | |
| CN111063296A (en) | LED display screen power switch control system | |
| CN201607632U (en) | Indoor temperature regulation and control device | |
| CN101968664B (en) | Surface temperature signal fast generating device | |
| CN201877083U (en) | Display with intelligent fan system | |
| CN204479974U (en) | A kind of heating equipment controller | |
| CN109582064B (en) | Passive variable thermal resistance temperature control two-position adjusting method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |