CN111458041A - Infrared temperature sensor - Google Patents
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- CN111458041A CN111458041A CN202010496951.8A CN202010496951A CN111458041A CN 111458041 A CN111458041 A CN 111458041A CN 202010496951 A CN202010496951 A CN 202010496951A CN 111458041 A CN111458041 A CN 111458041A
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- 230000003287 optical effect Effects 0.000 abstract description 9
- 238000009529 body temperature measurement Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000000007 visual effect Effects 0.000 abstract description 4
- 238000002955 isolation Methods 0.000 description 13
- 238000009434 installation Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/0205—Mechanical elements; Supports for optical elements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/08—Optical arrangements
- G01J5/0803—Arrangements for time-dependent attenuation of radiation signals
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Abstract
The invention discloses an infrared temperature sensor which comprises a shell, wherein a mounting plate is fixedly arranged on one side of the shell, a circuit board is fixedly arranged in the mounting plate, a sensor body is fixedly arranged on one side in the shell, three pins are fixedly arranged at the bottom end of the sensor body, the sensor body is respectively connected with the circuit board through the three pins, and an infrared temperature sensor circuit is arranged on the surface of the circuit board and comprises an amplifying module, a filtering module, an adding module and a temperature compensation module. According to the infrared temperature sensor, the optical filter adopts the threaded lens and the focal length of the optical filter is 6mm, so that the temperature measurement visual angle of the sensor body is reduced, the measurement distance is increased, the cost is greatly reduced, the wireless signal transmitter and the single chip microcomputer are connected with the circuit board, the temperature detected by the sensor body can be transmitted to the wireless signal transmitter and the display screen, a worker can conveniently detect temperature data in real time, and accidents are avoided.
Description
Technical Field
The invention relates to the field of sensors, in particular to an infrared temperature sensor.
Background
The heat sensor utilizes the radiation heat effect to lead the temperature of the detecting device to rise after receiving the radiation energy, thereby leading the performance of one column in the sensor and the temperature to change. Radiation can be detected by detecting a change in one of the properties. The temperature is a physical quantity for measuring the cold and hot degree of an object, is a common and important thermotechnical parameter in industrial production, and a plurality of production process processes require monitoring and controlling the temperature, and in the production process of the industries such as chemical industry, food industry and the like, the measurement and control of the temperature directly influence the quality and performance of products, and in the power supply industry, the temperature directly influences the safety performance of power supply equipment.
The high-voltage switch cabinet is an important device of a power supply system, the high-voltage switch cabinet is used for on-off, control or protection and the like in power generation, power transmission, power distribution, electric energy conversion and consumption of a power system, the working state of the high-voltage switch cabinet influences the switching performance and reliability of power supply, during the operation of the switch, the contact is locally welded or the joint is loosened to generate arc discharge due to mechanical vibration, overload and other reasons, so that accidents such as burning of electrical equipment and even power failure are caused, the temperature state of the isolation contact is timely and accurately monitored, the high-voltage switch cabinet has great significance for finding and discharging faults, the isolation switch contact of the high-voltage switch cabinet is in a high-voltage and strong-magnetic-field sealed environment and is not suitable for being detected by adopting a traditional contact type detection mode, and the currently commonly used optical fiber sensing temperature sensor has high price and low cost performance and, the infrared temperature sensor is relatively cheap, has a large temperature measurement visual angle, is easily interfered by the surrounding environment, and cannot accurately measure the temperature of an object with a small volume.
Disclosure of Invention
The invention mainly aims to provide an infrared temperature sensor which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides an infrared ray temperature sensor, includes the shell, one side fixed mounting of shell has the mounting panel, the inside fixed mounting of mounting panel has the circuit board, the fixed sensor body that is equipped with in one side of shell inside, the bottom fixed mounting of sensor body has three pin, the sensor body is connected with the circuit board through three pin respectively.
Further, the surface of circuit board is equipped with infrared temperature sensor circuit, including amplifying module, filtering module, addition module and temperature compensation module, amplifying module can amplify the signal of telecommunication that detects in the circuit, unnecessary clutter in the filtering module can the filtering circuit signal, the temperature compensation module can compensate the temperature that detects, avoids inaccurate because of the measured data that external influence caused, the addition module can superpose the circuit after temperature compensation circuit and filtering, realizes the best display effect.
Further, a thermopile element is installed in the middle of the bottom end inside the sensor body, thermistors are installed on two sides of the bottom end inside the sensor body, a window is arranged at the top end of the sensor body, an optical filter is fixedly installed in the middle of the window, the optical filter adopts a lens which is a threaded lens, and the focal length of the optical filter is 6 mm.
Furthermore, a light screen is fixedly mounted on one side of the front face of the shell, the position of the light screen corresponds to that of the sensor body, a display screen is fixedly mounted on the other side of the front face of the shell, and a plurality of radiating grooves are formed in one side of the shell.
Further, the inside middle part fixed mounting of shell has the singlechip, the opposite side fixed mounting of shell has wireless signal transmitter, the model of singlechip is STM32F105, just the singlechip is connected with circuit board, wireless signal transmitter and display screen.
Further, the back fixed mounting of mounting panel has the extension board, the both sides at the extension board back are fixed mounting respectively has the fixed column, every the round pin axle is all installed to fixed column one side, every the inside movable mounting of fixed column has the erection column, and the bottom of every erection column is all fixed and has been seted up a plurality of pinhole, every erection column and fixed column are all through pinhole and the round pin hub connection that is equipped with, every the equal fixed mounting of one end of erection column has the fixed plate, every the both sides of fixed plate all are equipped with the screw hole.
Further, the amplifying module comprises an amplifier a1, a thermoelectric element X1, resistors R1 and R2, a sliding rheostat Rp1, a capacitor C4 and the like, reverse input ends of the amplifier a1 are respectively connected with a resistor R1 and a resistor R2, the other end of the resistor R1 is grounded, a same-direction input end of the amplifier a1 is respectively connected with one end of the thermoelectric element X1 and a resistor R5, the other end of the thermoelectric element X1 is connected with an external circuit, an output end of the amplifier a1 is respectively connected with one end of the resistor R6, one end of the capacitor C4 and one end of the sliding rheostat Rp1, the other end of the resistor R2 is connected with a sliding rod of the sliding rheostat 1, and the other end of the sliding rheostat Rp1 is connected with an adjustable resistor R4.
Further, the filtering module includes an amplifier a2, a capacitor C4, a resistor R7, a capacitor C4, and the like, the reverse input end of the amplifier a2 is connected with a resistor R8, the other end of the resistor R8 is connected with the other end of the capacitor C4 and the output end of the amplifier a2, the same-direction input end of the amplifier a2 is connected with a resistor R7 and a capacitor C2, the other end of the resistor R7 is connected with a resistor R6, and the output end of the amplifier a2 is further connected with a resistor R9.
Further, the adding module comprises an amplifier A3, resistors R9, R10, a slide rheostat Rp3 and the like, a reverse input end of the amplifier A3 is connected with a resistor R12 and a resistor R11 respectively, a same-direction input end of the amplifier A3 is connected with a resistor R9 and a resistor R10 respectively, an output end of the amplifier A3 is connected with the other end of the resistor R12 and an external circuit respectively, the other end of the resistor R10 is connected with one end of a slide rheostat Rp3, and the other end of the resistor R11 is connected with a slide bar of the slide rheostat Rp 3.
Further, the temperature compensation module comprises an amplifier a4, resistors R14, R15, a sliding resistor Rp2, and the like, the equidirectional input end of the amplifier a4 is connected with a resistor R14 and a resistor R15 respectively, the reverse input end of the amplifier a4 is connected with one end of a resistor R16, the other end of the resistor R16 is connected with a sliding rod of a sliding resistor Rp2, one end of the sliding resistor Rp2 is connected with a resistor R17, the other end of the sliding resistor Rp2 is connected with an adjustable resistor R19, the other end of the resistor R17 is connected with a resistor R18, one end of a thermoelectric element X2 and the negative electrode of a diode VD1 respectively, the other end of the resistor R1 is connected with an external circuit and the other end of a resistor R1, the other end of the resistor R1 is connected with one end of a capacitor C1, the other end of the capacitor C1 is connected with an external circuit and the adjustable resistor R1, the output end of the amplifier a1, the other end of the adjustable resistor R20 is connected with the other end of the adjustable resistor R19 and the other end of the resistor R11 respectively.
Compared with the prior art, the invention has the following beneficial effects:
1. the focal length that adopts screw thread lens and light filter through the light filter that is equipped with is 6mm, makes the temperature measurement visual angle of sensor body reduce, meanwhile, is convenient for measure the less bulky object, has increased measuring distance simultaneously, has satisfied the requirement of high-voltage discharge distance, and the messenger cost of very big degree reduces, realizes not influencing the real-time on-line monitoring to keeping apart contact temperature under the circumstances of equipment operation.
2. Through the wireless signal transmitter and the singlechip that are equipped with and circuit board connection, can utilize single chip microcomputer control to send to wireless signal transmitter and display screen with the temperature that the sensor body detected, the temperature that detects is shown to the display screen this moment, and wireless signal transmitter and remote terminal carry out signal transmission, and the staff of being convenient for detects temperature data in real time, avoids the occurence of failure.
3. Through the installation post and the fixed column that are equipped with under mutually supporting of pinhole and round pin axle, can adjust the distance of extension board and installation department, be convenient for adjust the light screen and keep apart the distance between the contact, make the sensor body utilize suitable distance to keep apart the contact and detect, reach best observation effect.
Drawings
Fig. 1 is a schematic view of an overall structure of an infrared temperature sensor according to the present invention.
Fig. 2 is a schematic diagram of an internal structure of a housing of an infrared temperature sensor according to the present invention.
FIG. 3 is a circuit diagram of an infrared temperature sensor according to the present invention.
In the figure: 1. a housing; 2. mounting a plate; 3. a support plate; 4. a visor; 5. a display screen; 6. a heat sink; 7. mounting a column; 8. a fixing plate; 9. a sensor body; 10. a single chip microcomputer; 11. a wireless signal transmitter; 12. a pin; 13. a thermistor; 14. a thermopile element; 15. a window; 16. an optical filter; 17. a circuit board; 18. fixing a column; 19. a pin hole; 20. a pin shaft; 21. a threaded bore.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1
As shown in fig. 1-3, an infrared temperature sensor includes a housing 1, a mounting plate 2 is fixedly mounted on one side of the housing 1, a circuit board 17 is fixedly mounted inside the mounting plate 2, a sensor body 9 is fixedly disposed on one side inside the housing 1, three pins 12 are fixedly mounted at a bottom end of the sensor body 9, and the sensor body 9 is connected with the circuit board 17 through the three pins 12 respectively.
The middle part of the inside bottom of sensor body 9 is installed with thermopile element 14, and thermistor 13 is installed to the both sides of the inside bottom of sensor body 9, and the top of sensor body 9 is equipped with window 15, and the middle part fixed mounting of window 15 has light filter 16, and the lens that light filter 16 adopted is screw thread lens, and light filter 16's focus is 6 mm.
The positive one side fixed mounting of shell 1 has light screen 4, and the position of light screen 4 and the position of sensor body 9 are corresponding, and the positive opposite side fixed mounting of shell 1 has display screen 5, and a plurality of radiating groove 6 has been seted up to one side of shell 1.
By adopting the technical scheme: the focal length of the optical filter 16 which is arranged through the threaded lens and the optical filter 16 is 6mm, so that the temperature measurement visual angle of the sensor body 9 is reduced, meanwhile, objects with smaller volumes are convenient to measure, the measurement distance is increased, the requirement of high-voltage discharge distance is met, the cost is reduced to a great extent, and real-time online monitoring of the temperature of the isolation contact is realized under the condition that the operation of equipment is not influenced.
Example 2
As shown in fig. 1-3, an infrared temperature sensor includes a housing 1, a mounting plate 2 is fixedly mounted on one side of the housing 1, a circuit board 17 is fixedly mounted inside the mounting plate 2, a sensor body 9 is fixedly disposed on one side inside the housing 1, three pins 12 are fixedly mounted at a bottom end of the sensor body 9, and the sensor body 9 is connected with the circuit board 17 through the three pins 12 respectively.
The surface of circuit board 17 is equipped with infrared temperature sensor circuit, including amplifying the module, the filter module, addition module and temperature compensation module, amplifying the module and can enlargiing the signal of telecommunication that detects in the circuit, unnecessary clutter in the filter module can the filtering circuit signal, temperature compensation module can compensate the temperature that detects, it is inaccurate to avoid the detected data that causes because of external influence, addition module can superpose the circuit after temperature compensation circuit and the filtering, realize best display effect.
The inside middle part fixed mounting of shell 1 has singlechip 10, and the opposite side fixed mounting of shell 1 has wireless signal transmitter 11, and singlechip 10's model is STM32F105, and singlechip 10 is connected with circuit board 17, wireless signal transmitter 11 and display screen 5.
The amplifying module comprises an amplifier A1, a thermoelectric element X1, resistors R1 and R2, a slide rheostat Rp1, a capacitor C4 and the like, wherein the reverse input end of the amplifier A1 is connected with a resistor R1 and a resistor R2 respectively, the other end of the resistor R1 is grounded, the same-direction input end of the amplifier A1 is connected with one end of a thermoelectric element X1 and a resistor R5 respectively, the other end of the thermoelectric element X1 is connected with an external circuit, the output end of the amplifier A1 is connected with one end of a resistor R6, one end of a capacitor C4 and one end of a slide rheostat Rp1 respectively, the other end of the resistor R2 is connected with a slide bar of a slide rheostat Rp1, and the other end of the slide rheostat R.
The filter module comprises an amplifier A2, a capacitor C4, a resistor R7, a capacitor C4 and the like, wherein the reverse input end of the amplifier A2 is connected with a resistor R8, the other end of the resistor R8 is connected with the other end of the capacitor C4 and the output end of the amplifier A2 respectively, the same-direction input end of the amplifier A2 is connected with a resistor R7 and a capacitor C2 respectively, the other end of the resistor R7 is connected with a resistor R6, and the output end of the amplifier A2 is further connected with a resistor R9.
The adding module comprises an amplifier A3, resistors R9, R10, a slide rheostat Rp3 and the like, wherein the reverse input end of the amplifier A3 is connected with a resistor R12 and a resistor R11 respectively, the same-direction input end of the amplifier A3 is connected with a resistor R9 and a resistor R10 respectively, the output end of the amplifier A3 is connected with the other end of the resistor R12 and an external circuit respectively, the other end of the resistor R10 is connected with one end of a slide rheostat Rp3, and the other end of the resistor R11 is connected with a slide rod of the slide rheostat Rp 3.
The temperature compensation module comprises an amplifier A4, resistors R14, R15, a sliding rheostat Rp2 and the like, wherein the equidirectional input end of the amplifier A4 is respectively connected with a resistor R14 and a resistor R15, the reverse input end of the amplifier A4 is connected with one end of a resistor R16, the other end of the resistor R16 is connected with a sliding rod of a sliding rheostat Rp2, one end of a sliding rheostat Rp2 is connected with a resistor R17, the other end of a sliding rheostat Rp2 is connected with an adjustable resistor R19, the other end of the resistor R17 is respectively connected with a resistor R18, one end of a thermoelectric element X2 and the cathode of a diode VD1, the other end of the resistor R1 is connected with an external circuit and the other end of the resistor R1, the other end of the resistor R1 is connected with one end of a capacitor C1, the other end of the capacitor C1 is connected with, the other end of the adjustable resistor R20 is connected with the other end of the adjustable resistor R19 and the other end of the resistor R11 respectively.
By adopting the technical scheme: be connected with circuit board 17 through wireless signal transmitter and singlechip 10 that are equipped with, can utilize singlechip 10 control to send to wireless signal transmitter 11 and display screen 5 with the temperature that sensor body 9 detected, display screen 5 shows the temperature that detects this moment, and wireless signal transmitter 11 and remote terminal carry out signal transmission, and the staff real-time detection temperature data of being convenient for avoids the occurence of failure.
Example 3
As shown in fig. 1-3, an infrared temperature sensor includes a housing 1, a mounting plate 2 is fixedly mounted on one side of the housing 1, a circuit board 17 is fixedly mounted inside the mounting plate 2, a sensor body 9 is fixedly disposed on one side inside the housing 1, three pins 12 are fixedly mounted at a bottom end of the sensor body 9, and the sensor body 9 is connected with the circuit board 17 through the three pins 12 respectively.
The middle part of the inside bottom of sensor body 9 is installed with thermopile element 14, and thermistor 13 is installed to the both sides of the inside bottom of sensor body 9, and the top of sensor body 9 is equipped with window 15, and the middle part fixed mounting of window 15 has light filter 16, and the lens that light filter 16 adopted is screw thread lens, and light filter 16's focus is 6 mm.
The positive one side fixed mounting of shell 1 has light screen 4, and the position of light screen 4 and the position of sensor body 9 are corresponding, and the positive opposite side fixed mounting of shell 1 has display screen 5, and a plurality of radiating groove 6 has been seted up to one side of shell 1.
The back fixed mounting of mounting panel 2 has extension board 3, the both sides at the extension board 3 back are fixed mounting respectively has fixed column 18, round pin axle 20 is all installed to every fixed column 18 one side, the inside movable mounting of every fixed column 18 has erection column 7, a plurality of pinhole 19 has all been fixed to have seted up in the bottom of every erection column 7, every erection column 7 and fixed column 18 all connect through pinhole 19 and round pin axle 20 that are equipped with, the equal fixed mounting of one end of every erection column 7 has fixed plate 8, the both sides of every fixed plate 8 all are equipped with screw hole 21.
By adopting the technical scheme: the distance between the support plate 3 and the installation position can be adjusted through the mutual matching of the pin hole 19 and the pin shaft 20 of the installation column 7 and the fixing column 18, so that the distance between the light shielding plate 4 and the isolation contact can be conveniently adjusted, the sensor body 9 can detect the isolation contact by using a proper distance, and the best observation effect is achieved.
It should be noted that, the invention is an infrared temperature sensor, when in use, firstly, the fixed plate 8 is installed inside the high-voltage switch cabinet, and the position of the opposite surface of the isolation contact is opposite to that of the light screen 4, and the position of the light screen 4 is corresponding to that of the isolation contact, so that the isolation contact is convenient to be detected by the sensor body 9, the isolation contact is fixed by inserting screws into the threaded holes 21, according to the size of the isolation contact, the relative distance between the installation column 7 and the fixed column 18 is adjusted by using the pin hole 19 and the pin shaft 20, so as to adjust the distance between the light screen 4 and the isolation contact, so that the isolation contact appears in the measurement view angle of the optical filter 16 in the sensor body 9, when the sensor body 9 detects the temperature change of the isolation contact by matching with the circuit board 17, the data are recorded by using the single chip microcomputer 10 and the wireless signal transmitter 11, the temperature of the isolating contact is convenient for workers to detect in real time, and accidents caused by neglecting the temperature change of the isolating contact are avoided.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides an infrared ray temperature sensor, includes shell (1), its characterized in that, one side fixed mounting of shell (1) has mounting panel (2), the inside fixed mounting of mounting panel (2) has circuit board (17), the fixed sensor body (9) that are equipped with in one side of shell (1) inside, the bottom fixed mounting of sensor body (9) has three pin (12), sensor body (9) are connected with circuit board (17) through three pin (12) respectively.
2. An infrared temperature sensor according to claim 1, wherein: the surface of circuit board (17) is equipped with infrared temperature sensor circuit, including amplifying module, filtering module, addition module and temperature compensation module, amplifying module can enlarge the signal of telecommunication that detects in the circuit, unnecessary clutter in the filtering module can the filtering circuit signal, the temperature compensation module can compensate the temperature that detects, avoids inaccurate because of the measured data that external influence caused, the addition module can superpose the circuit after temperature compensation circuit and filtering, realizes the best display effect.
3. An infrared temperature sensor according to claim 1, wherein: the middle part of the inside bottom of sensor body (9) is installed thermopile component (14), thermistor (13) are installed to the both sides of the inside bottom of sensor body (9), the top of sensor body (9) is equipped with window (15), the middle part fixed mounting of window (15) has light filter (16), the lens that light filter (16) adopted is screw thread lens, just the focus of light filter (16) is 6 mm.
4. An infrared temperature sensor according to claim 1, wherein: the sensor is characterized in that a light screen (4) is fixedly mounted on one side of the front face of the shell (1), the position of the light screen (4) corresponds to the position of the sensor body (9), a display screen (5) is fixedly mounted on the other side of the front face of the shell (1), and a plurality of radiating grooves (6) are formed in one side of the shell (1).
5. An infrared temperature sensor according to claim 1, wherein: the inside middle part fixed mounting of shell (1) has singlechip (10), the opposite side fixed mounting of shell (1) has wireless signal transmitter (11), singlechip (10) are connected with circuit board (17), wireless signal transmitter (11) and display screen (5).
6. An infrared temperature sensor according to claim 1, wherein: the back fixed mounting of mounting panel (2) has extension board (3), the both sides at the extension board (3 back respectively fixed mounting have fixed column (18), every round pin axle (20) are all installed to fixed column (18) one side, every the inside movable mounting of fixed column (18) has erection column (7), and a plurality of pinhole (19) have all been fixed to have seted up in the bottom of every erection column (7), every erection column (7) and fixed column (18) are all connected through pinhole (19) and round pin axle (20) that are equipped with, every the equal fixed mounting of one end of erection column (7) has fixed plate (8), every the both sides of fixed plate (8) all are equipped with screw hole (21).
7. An infrared temperature sensor according to claim 2, wherein: the amplifying module comprises an amplifier A1, a thermoelectric element X1, resistors R1 and R2, a slide rheostat Rp1, a capacitor C4 and the like, wherein the reverse input end of the amplifier A1 is connected with a resistor R1 and a resistor R2 respectively, the other end of the resistor R1 is grounded, the same-direction input end of the amplifier A1 is connected with one end of the thermoelectric element X1 and a resistor R5 respectively, the other end of the thermoelectric element X1 is connected with an external circuit, the output end of the amplifier A1 is connected with one end of the resistor R6, one end of the capacitor C4 and one end of the slide rheostat Rp1 respectively, the other end of the resistor R2 is connected with a slide bar of the slide rheostat Rp1, and the other end of the slide rheostat Rp1 is connected with an adjustable.
8. An infrared temperature sensor according to claim 2, wherein: the filtering module comprises an amplifier A2, a capacitor C4, a resistor R7, a capacitor C4 and the like, wherein the reverse input end of the amplifier A2 is connected with a resistor R8, the other end of the resistor R8 is connected with the other end of the capacitor C4 and the output end of the amplifier A2 respectively, the homodromous input end of the amplifier A2 is connected with a resistor R7 and a capacitor C2 respectively, the other end of the resistor R7 is connected with a resistor R6, and the output end of the amplifier A2 is further connected with a resistor R9.
9. An infrared temperature sensor according to claim 2, wherein: the adding module comprises an amplifier A3, resistors R9, R10, a sliding rheostat Rp3 and the like, wherein the reverse input end of the amplifier A3 is connected with a resistor R12 and a resistor R11 respectively, the same-direction input end of the amplifier A3 is connected with a resistor R9 and a resistor R10 respectively, the output end of the amplifier A3 is connected with the other end of the resistor R12 and an external circuit respectively, the other end of the resistor R10 is connected with one end of the sliding rheostat Rp3, and the other end of the resistor R11 is connected with a sliding rod of the sliding rheostat Rp 3.
10. An infrared temperature sensor according to claim 2, wherein: the temperature compensation module comprises an amplifier A4, resistors R14, R15, a sliding rheostat Rp2 and the like, wherein the equidirectional input end of the amplifier A4 is respectively connected with a resistor R14 and a resistor R15, the reverse input end of the amplifier A4 is connected with one end of a resistor R16, the other end of the resistor R16 is connected with a sliding rod of a sliding rheostat Rp2, one end of the sliding rheostat Rp2 is connected with a resistor R17, the other end of the sliding rheostat Rp2 is connected with an adjustable resistor R19, the other end of the resistor R17 is respectively connected with one end of a resistor R18, one end of a thermoelectric element X2 and the negative electrode of a diode VD1, the other end of the resistor R1 is connected with an external circuit and the other end of a resistor R1, the other end of the resistor R1 is connected with one end of a capacitor C1, the other end of the capacitor C1 is connected with an external circuit and an adjustable resistor, the other end of the adjustable resistor R20 is connected with the other end of the adjustable resistor R19 and the other end of the resistor R11 respectively.
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| CN202010496951.8A CN111458041A (en) | 2020-06-03 | 2020-06-03 | Infrared temperature sensor |
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| CN202010496951.8A CN111458041A (en) | 2020-06-03 | 2020-06-03 | Infrared temperature sensor |
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| CN206523234U (en) * | 2016-12-08 | 2017-09-26 | 国网山西省电力公司临汾供电公司 | A kind of high-voltage board insulating contact on-line temperature monitoring prior-warning device |
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| CN204007880U (en) * | 2014-07-09 | 2014-12-10 | 国家电网公司 | A kind of non-contact infrared temperature collecting device |
| CN206523234U (en) * | 2016-12-08 | 2017-09-26 | 国网山西省电力公司临汾供电公司 | A kind of high-voltage board insulating contact on-line temperature monitoring prior-warning device |
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Application publication date: 20200728 |