CN109459141B - Dual-color infrared temperature measuring device - Google Patents
Dual-color infrared temperature measuring device Download PDFInfo
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- CN109459141B CN109459141B CN201811552048.8A CN201811552048A CN109459141B CN 109459141 B CN109459141 B CN 109459141B CN 201811552048 A CN201811552048 A CN 201811552048A CN 109459141 B CN109459141 B CN 109459141B
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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
- G01J5/0096—Radiation pyrometry, e.g. infrared or optical thermometry for measuring wires, electrical contacts or electronic systems
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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
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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
- G01J5/06—Arrangements for eliminating effects of disturbing radiation; Arrangements for compensating changes in sensitivity
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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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- 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
- G01J5/48—Thermography; Techniques using wholly visual means
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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
- G01J5/06—Arrangements for eliminating effects of disturbing radiation; Arrangements for compensating changes in sensitivity
- G01J2005/066—Differential arrangement, i.e. sensitive/not sensitive
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Abstract
The invention provides a bicolor infrared temperature measuring device, belongs to the field of infrared temperature measurement, and solves the problem that the accuracy of the temperature measured by the conventional device is not high. The objective knob is connected with one end of the shell, the objective is arranged in the objective knob, the first optical filter and the second optical filter are oppositely arranged with the objective, the first detector and the second detector are oppositely arranged with the first optical filter and the second optical filter respectively, the third detector is arranged below the second detector, the signal output ends of the first detector and the third detector are respectively connected with the first signal input end and the second signal input end of the differential operation module, the signal output ends of the second detector and the third detector are respectively connected with the third signal input end and the fourth signal input end of the differential operation module, the signal output end of the differential operation module is connected with the signal input end of the AD conversion module, the signal output end of the AD conversion module is connected with the first signal input end of the micro-processing module, the signal output end of the micro-processing module is connected with the signal input end of the display, the ocular lens and the display are arranged at the other end of the shell, and the power supply and the communication cable interface are arranged at the bottom surface of the shell.
Description
Technical Field
The invention relates to the technical field of infrared temperature measurement, in particular to a bicolor infrared temperature measurement device.
Background
With the continuous improvement of the automation level of the power industry, temperature measurement becomes an important and indispensable key technology in the production of the power industry. In actual production, the production is carried out strictly according to the temperature set by theory, and the temperature of the product in the production process is tracked and regulated, thereby being beneficial to improving the yield and reducing the cost. The method is required to have an ideal temperature measurement technology, and most of practical technologies of the temperature measurement technology are required to have the characteristics of non-contact, quick response, good stability, long service life and the like. In the past, infrared temperature measurement is mostly carried out by simply measuring the surface temperature of an object by means of infrared thermal radiation of a certain wave band of the object, and the measurement result often cannot reach the measurement effect. In order to more accurately measure the surface of a high-temperature object, a bicolor infrared temperature measurement technology is newly developed.
The existing bicolor infrared temperature measuring device often adopts an optical filter to divide infrared radiation energy into two adjacent wave bands, then receives the energy of the two wave bands through two independent detectors, and finally determines the temperature of an object according to the ratio of the energy of the two wave bands. However, because some of the interference wave light may also pass through the filter and be received by the detector, the accuracy of the measured temperature is not high.
Disclosure of Invention
The invention aims to solve the technical problem that the accuracy of the temperature measured by the existing bicolor infrared temperature measuring device is low, and provides a bicolor infrared temperature measuring device.
In order to solve the technical problems, the invention adopts the following technical scheme:
The utility model provides a bicolor infrared temperature measuring device, its includes objective, objective knob, casing, first light filter, second light filter, first detector, second detector, third detector, display, eyepiece, power and communication cable interface, power module and temperature calculation device, temperature calculation device includes difference operation module, AD conversion module and micro-processing module, wherein: the objective lens knob is in threaded connection with one end of the shell, the objective lens is arranged in the objective lens knob, the first optical filter, the second optical filter, the first detector, the second detector, the third detector and the temperature calculating device are arranged in the inner cavity of the shell, the first optical filter and the second optical filter are oppositely arranged with the objective lens and are positioned above the second optical filter, the wavelength of infrared light screened by the first optical filter and the second optical filter is different, the first detector and the second detector are oppositely arranged with the first optical filter and the second optical filter respectively, the third detector is arranged below the second detector, the signal output end of the first detector and the signal output end of the third detector are respectively connected with the first signal input end and the second signal input end of the differential operation module, the signal output end of the second detector and the signal output end of the third detector are respectively connected with the third signal input end and the fourth signal input end of the differential operation module, the signal output end of the differential operation module is connected with the signal input end of the AD conversion module, the signal output end of the AD conversion module is connected with the first signal input end of the micro-processing module, the signal output end of the micro-processing module is connected with the signal input end of the display, the eyepiece is arranged in the middle part of the other end of the shell, the display is arranged at the upper part of the other end of the shell, the power supply and the communication cable interface are arranged on the bottom surface of the shell, one end of a power supply wire in the power supply and communication cable interface is connected with the power supply input end of the differential operation module, the power supply input end of the AD conversion module, the power supply input end of the micro-processing module and the power supply input end of the display, the other end of the power supply wire in the power supply and communication cable interface is connected with the power supply module, the communication line in the power supply and communication cable interface is used for connecting with external equipment.
Optionally, the temperature calculating device further comprises an input module, and a signal output end of the input module is connected with a second signal input end of the micro-processing module.
Optionally, the bicolor infrared temperature measuring device further comprises a fastening nut and a bracket, and the bracket is fixed on the periphery of the objective lens knob through the fastening nut.
Optionally, the differential operation module includes a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, an operational amplifier U2A, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a resistor R16, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor C8, and an operational amplifier U2B, the AD conversion module includes an AD conversion chip U3, the micro-processing module includes a micro-processing chip U1, and the display includes a chip LCD1, where: one end of a resistor R1 is connected with a signal output end of the first detector, the other end of the resistor R1 is connected with one end of a resistor R3 and one end of a capacitor C1, the other end of the capacitor C1 is grounded, the other end of the resistor R3 is connected with one end of a resistor R5, one end of a resistor R6 and one end of a capacitor C2, the other end of the capacitor C2 is grounded, the other end of the resistor R6 is a power input end of the differential operation module, and the other end of the resistor R5 is connected with a non-inverting input end of an operational amplifier U2A; one end of a resistor R2 is connected with a signal output end of the third detector, the other end of the resistor R2 is connected with one end of a resistor R4 and one end of a capacitor C3, the other end of the capacitor C3 is grounded, the other end of the resistor R4 is connected with one end of a resistor R7, one end of a capacitor C4, one end of a resistor R8 and an inverting input end of an operational amplifier U2A, the other end of the capacitor C4 and the other end of the resistor R7 are grounded, and the other end of the resistor R8 is connected with an output end of the operational amplifier U2A; one end of a resistor R9 is connected with a signal output end of the second detector, the other end of the resistor R9 is connected with one end of a resistor R11 and one end of a capacitor C5, the other end of the capacitor C5 is grounded, the other end of the resistor R11 is connected with one end of a resistor R13, one end of a resistor R14 and one end of a capacitor C6, the other end of the capacitor C6 is grounded, the other end of the resistor R14 is a power input end of the differential operation module, and the other end of the resistor R13 is connected with a non-inverting input end of an operational amplifier U2B; one end of the resistor R10 is connected with the signal output end of the third detector, the other end of the resistor R10 is connected with one end of the resistor R12 and one end of the capacitor C7, the other end of the capacitor C7 is grounded, the other end of the resistor R12 is connected with one end of the resistor R15, one end of the capacitor C8, one end of the resistor R16 and the inverting input end of the operational amplifier U2B, the other end of the capacitor C8 and the other end of the resistor R15 are grounded, the other end of the resistor R16 is connected with the output end of the operational amplifier U2B, the output end of the operational amplifier U2A is connected with the IN1 end of the AD conversion chip U3, the VREF+ end of the AD conversion chip U3 is the power input end of the AD conversion module, VREF-end of the AD conversion chip U3 is grounded, the OUT1 end of the AD conversion chip U3 is respectively connected with the P1.0 end to P1.7 end of the micro-processing chip U1, the end of the microprocessor U1 is the output end of the microprocessor U2B, the output end of the microprocessor U2A is the microprocessor U1 is the power input end of the microprocessor U0.0 to the LCD chip is the power input end of the LCD chip, and the output end of the microprocessor U1 is the power supply end of the LCD chip is the power supply end of the microprocessor chip is the power supply end of the LCD chip is the power supply end of the microprocessor chip, and the microprocessor chip is the power supply end of the power supply of the microprocessor chip is the power supply of the microprocessor chip, and the power supply of the power supply is the power supply.
Optionally, the input module includes a resistor R16, a resistor R17, a resistor R18, a key switch K1, a key switch K2, and a key switch K3, wherein: one end of a resistor R16 is connected with the P2.3 end of the micro-processing chip U1, the other end of the resistor R16 is connected with one end of a key switch K1, the other end of the key switch K1 is grounded, one end of a resistor R17 is connected with the P2.2 end of the micro-processing chip U1, the other end of the resistor R17 is connected with one end of the key switch K2, the other end of the key switch K2 is grounded, one end of a resistor R18 is connected with the P2.4 end of the micro-processing chip U1, the other end of the resistor R18 is connected with one end of the key switch K3, and the other end of the key switch K3 is grounded.
Optionally, the wavelength of the infrared light screened by the first optical filter is 760+/-10-850 nm, and the wavelength of the infrared light screened by the second optical filter is 930+/-15-1050 nm.
The beneficial effects of the invention are as follows:
The three independent detectors are arranged to respectively receive two paths of infrared light with different wavebands and one path of natural light, and the differential operation module is used for carrying out differential operation on the natural light and the two paths of infrared light with different wavebands, so that the influence of interference wavebands on the accuracy of temperature measurement can be counteracted, the accuracy of the measured temperature can be improved, and the measured temperature can be intuitively displayed by displaying the temperature measurement result on the display. Compared with the background technology, the invention has the advantages of simple structure, convenient use, capability of improving the measurement accuracy and the like.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a right side view of the present invention.
Fig. 3 is a schematic diagram of the connection relationship of the circuit modules according to the present invention.
Fig. 4 is a perspective view of the bracket of fig. 1.
Fig. 5 is a circuit diagram of a circuit module according to the present invention.
Detailed Description
The invention will be described in further detail below with reference to the drawings and examples.
As shown in fig. 1 to 4, the dual-color infrared temperature measuring device in the present embodiment includes an objective lens 10, an objective lens knob 1, a housing 2, a first optical filter 3, a second optical filter 4, a first detector 5, a second detector 6, a third detector 7, a display 8, an eyepiece 9, a power and communication cable interface 17, a power module 18, and a temperature calculating device, wherein the temperature calculating device includes a differential operation module 11, an AD conversion module 12, and a microprocessor module 13, and the temperature calculating device includes: the objective knob 1 is in threaded connection with one end of the shell 2, the objective 10 is arranged in the objective knob 1, the first optical filter 3, the second optical filter 4, the first detector 5, the second detector 6, the third detector 7 and the temperature calculating device are arranged in the inner cavity of the shell 2, the first optical filter 3 and the second optical filter 4 are arranged opposite to the objective 10, the first optical filter 3 is positioned above the second optical filter 4, the wavelength of infrared light screened by the first optical filter 3 and the second optical filter 4 is different, the first detector 5 and the second detector 6 are respectively arranged opposite to the first optical filter 3 and the second optical filter 4, the third detector 7 is arranged below the second detector 6, the signal output end of the first detector 5 and the signal output end of the third detector 7 are respectively connected with the first signal input end and the second signal input end of the differential operation module 11, the signal output end of the second detector 6 and the signal output end of the third detector 7 are respectively connected with the third signal input end and the fourth signal input end of the differential operation module 11, the signal output end of the differential operation module 11 is connected with the signal input end of the AD conversion module 12, the signal output end of the AD conversion module 12 is connected with the first signal input end of the micro processing module 13, the signal output end of the micro processing module 13 is connected with the signal input end of the display 8, the eyepiece 9 is arranged in the middle of the other end of the shell 2, the display 8 is arranged at the upper part of the other end of the shell 2, the power supply and the communication cable interface 17 are arranged on the bottom surface of the shell 2, one end of a power supply wire in the power supply and communication cable interface 17 is connected with the power supply input end of the differential operation module 11, the power supply input end of the AD conversion module 12, the power supply input end of the micro processing module 13 and the power supply input end of the display 8, the other end of the power line in the power and communication cable interface 17 is connected to the power module 18, and the communication line in the power and communication cable interface 17 is used for connecting with external equipment. The communication line in the power supply and communication cable interface is an RS485 communication line.
The power module 18 in this embodiment can provide 24V dc, and the power module 18 may be a storage battery, or may be a module capable of converting the mains supply into 24V dc, and the power module 18 is used to supply power to the differential operation module 11, the AD conversion module 12, the microprocessor module 13, and the display 8.
Optionally, the temperature calculating device further comprises an input module 14, and a signal output end of the input module 14 is connected with a second signal input end of the micro-processing module 13. By setting the input module 14, parameters such as a measurement mode, emissivity, an ash factor, a filter coefficient, response speed, peak hold time and the like during temperature measurement can be set, so that the invention can meet the use requirements of temperature measurement magnitude control feedback such as scientific research experiments and vacuum equipment. After setting various parameters, the microprocessor module 13 may control the display 8 to display the set various parameters.
Optionally, the dual-color infrared temperature measuring device further comprises a fastening nut 15 and a bracket 16, wherein the bracket 16 is fixed on the periphery of the objective lens knob 1 through the fastening nut 15. By arranging the bracket 16, the dual-color infrared temperature measuring device can be fixed; the bracket 16 and the bicolor infrared temperature measuring device can be tightly connected through the fastening nut 15.
In this embodiment, as shown in fig. 5, the differential operation module 11 includes a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, an operational amplifier U2A (AD 706K), a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a resistor R16, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor C8, and an operational amplifier U2B (AD 706K), the AD conversion module 12 includes an AD conversion chip U3 (ADC 0808), the microprocessor module 13 includes a microprocessor chip U1 (80C 31), and the display includes a chip LCD1 (LM 016l), wherein: one end of a resistor R1 (a first signal input end of the differential operation module 11) is connected with a signal output end (outputting infrared light of a first wave band in fig. 5) of the first detector 5, the other end of the resistor R1 is connected with one end of a resistor R3 and one end of a capacitor C1, the other end of the capacitor C1 is grounded, the other end of the resistor R3 is connected with one end of a resistor R5, one end of a resistor R6 and one end of a capacitor C2, the other end of the capacitor C2 is grounded, the other end of the resistor R6 is a power input end of the differential operation module 11, and the other end of the resistor R5 is connected with a non-inverting input end of an operational amplifier U2A; one end of a resistor R2 (a second signal input end of the differential operation module 11) is connected with a signal output end (outputting natural light in fig. 5) of the third detector 7, the other end of the resistor R2 is connected with one end of a resistor R4 and one end of a capacitor C3, the other end of the capacitor C3 is grounded, the other end of the resistor R4 is connected with one end of the resistor R7, one end of the capacitor C4, one end of a resistor R8 and an inverting input end of the operational amplifier U2A, the other end of the capacitor C4 and the other end of the resistor R7 are grounded, and the other end of the resistor R8 is connected with an output end of the operational amplifier U2A (the signal output end of the differential operation module 11); one end of a resistor R9 (a third signal input end of the differential operation module 11) is connected with a signal output end (outputting infrared light of a second wave band in fig. 5) of the second detector 6, the other end of the resistor R9 is connected with one end of a resistor R11 and one end of a capacitor C5, the other end of the capacitor C5 is grounded, the other end of the resistor R11 is connected with one end of a resistor R13, one end of a resistor R14 and one end of a capacitor C6, the other end of the capacitor C6 is grounded, the other end of the resistor R14 is a power input end of the differential operation module 11, and the other end of the resistor R13 is connected with a non-inverting input end of an operational amplifier U2B; one end of the resistor R10 (the fourth signal input end of the differential operation module 11) is connected with the signal output end (outputting natural light IN fig. 5) of the third detector 7, the other end of the resistor R10 is connected with one end of the resistor R12 and one end of the capacitor C7, the other end of the capacitor C7 is grounded, the other end of the resistor R12 is connected with one end of the resistor R15, one end of the capacitor C8 and the inverting input end of the operational amplifier U2B are connected, the other end of the capacitor C8 and the other end of the resistor R15 are grounded, the other end of the resistor R16 is connected with the output end (the signal output end of the differential operation module 11) of the operational amplifier U2B, the output end of the operational amplifier U2A is connected with the signal input end of the IN0 end (the signal input end of the AD conversion module 12) of the AD conversion chip U3, the output end (the signal input end of the AD conversion module 12) of the AD conversion chip U3 is connected with the IN1 end of the AD conversion chip U3, the + end of the AD conversion chip U3 is the power input end of the AD conversion module 12, the signal input end of the micro-chip OUT1 is connected with the signal input end of the micro-processor chip 1.p 1 of the LCD1 to the micro-processor chip 1, the micro-processor 1 is connected with the signal output end of the micro-processor 1, the micro-processor chip 1.p 1 of the micro-processor 1 is connected with the signal processor 1.p 1 of the micro-processor chip 1.p 1, and the micro-processor 1.p 1 is connected with the signal processor 1.p 1.
Further, the input module 14 includes a resistor R16, a resistor R17, a resistor R18, a key switch K1, a key switch K2, and a key switch K3, wherein: one end of a resistor R16 (a second signal input end of the micro-processing module 13) is connected with the P2.3 end of the micro-processing chip U1, the other end of the resistor R16 is connected with one end of a key switch K1, the other end of the key switch K1 is grounded, one end of a resistor R17 (a second signal input end of the micro-processing module 13) is connected with the P2.2 end of the micro-processing chip U1, the other end of the resistor R17 is connected with one end of the key switch K2, the other end of the key switch K2 is grounded, one end of a resistor R18 (the second signal input end of the micro-processing module 13) is connected with the P2.4 end of the micro-processing chip U1, the other end of the resistor R18 is connected with one end of the key switch K3, and the other end of the key switch K3 is grounded.
In this embodiment, the wavelength of the infrared light screened by the first optical filter 3 is 760±10-850 nm, and the wavelength of the infrared light screened by the second optical filter 4 is 930±15-1050 nm.
When the infrared temperature measuring device is used, energy radiated by a target object passes through the objective lens 10 and enters the two-color infrared temperature measuring device, then passes through the first optical filter 3 and the second optical filter 4, after being screened by the first optical filter 3 and the second optical filter 4, light received by the objective lens 10 is decomposed into three paths of light signals to obtain two paths of infrared light and one path of natural light, for example, the wavelength ranges of the infrared light in the two paths of light bands are 760+/-10 nm and 850nm and 930+/-15 nm and 1050nm respectively, the three paths of light signals are respectively received by the first detector 5, the second detector 6 and the third detector 7 and processed, then the difference operation module 11 carries out difference operation on the infrared light and the natural light in the first path of light band (the wavelength range is 760+/-10 nm and 850 nm) and the infrared light in the second path of light band (the wavelength range is 930+/-15 nm) respectively, so as to obtain two paths of light signals after filtering the influence of the interference bands, for example, the two paths of infrared light signals in the two paths of light bands are respectively AD converted by the AD conversion module 12 and then enter the micro processing module 13, and the micro processing module 13 calculates the temperature ratio of the target object in the two paths of light bands according to the light energy in the wavelength ranges of the first path of light band (760+/-10 nm and the wavelength range of light is controlled to be displayed on the target object. Through the input module 14, the historical temperature measurement data and parameters set during temperature measurement can be stored in the micro-processing module 13, and the invention can perform data transmission with external equipment, such as temperature data transmission and the like, through a communication line in the power supply and communication cable interface 17.
When the micro-processing module 13 calculates the temperature of the target object according to the ratio of the energy of the optical signals of the two wavebands, the calculation can be performed by the following formula (1):
In the formula (1), M (T, λ 1) and M (T, λ 2) are the spectral radiant emittance emitted from the same measurement point measured at two wavelengths λ 1 and λ 2 at the same time, T is the temperature of the measured object, and λ 1 and λ 2 are the wavelengths of infrared light of the two wavelength bands received by the micro-processing module 13.
Wherein,
In the formula (2), M (T, lambda) is the spectral radiant exitance; lambda is the wavelength of the radiated electromagnetic wave; t is the thermodynamic temperature; c 1 is a first radiation constant, C 1＝3.715×10-16W·m2;C2 is a second radiation constant, C 2＝1.438×10-2 mK.
By calculating the temperature of the target object in this way, the micro-processing module 13 can effectively eliminate the influence of factors such as distance coefficient, background radiation, atmospheric absorption and the like on temperature measurement, so that the temperature measurement accuracy can be effectively improved.
It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present invention, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the invention, and are also considered to be within the scope of the invention.
Claims (4)
1. The utility model provides a bicolor infrared temperature measuring device, its characterized in that includes objective (10), objective knob (1), casing (2), first light filter (3), second light filter (4), first detector (5), second detector (6), third detector (7), display (8), eyepiece (9), power and communication cable interface (17), power module (18) and temperature computing device, temperature computing device includes difference operation module (11), AD conversion module (12) and microprocessor module (13), wherein:
The objective knob (1) is in threaded connection with one end of the shell (2), the objective (10) is arranged in the objective knob (1), the first optical filter (3), the second optical filter (4), the first detector (5), the second detector (6), the third detector (7) and the temperature calculating device are arranged in the inner cavity of the shell (2), the first optical filter (3) and the second optical filter (4) are oppositely arranged with the objective (10), the first optical filter (3) is positioned above the second optical filter (4), the wavelength of infrared light screened by the first optical filter (3) and the second optical filter (4) is different, the first detector (5) and the second detector (6) are oppositely arranged with the first optical filter (3) and the second optical filter (4), the third detector (7) is arranged below the second detector (6), the signal output end of the first detector (5) and the signal output end of the third detector (7) are respectively connected with the first signal input end of the differential operation module (11) and the second signal input end of the differential operation module (11), the signal output end of the first detector (5) and the signal output end of the differential operation module (11) are respectively connected with the signal input end of the third signal operation module (11) and the signal output end of the differential operation module (12), the signal output end of the AD conversion module (12) is connected with the first signal input end of the micro-processing module (13), the signal output end of the micro-processing module (13) is connected with the signal input end of the display (8), the eyepiece (9) is arranged in the middle of the other end of the shell (2), the display (8) is arranged on the upper part of the other end of the shell (2), the power supply and communication cable interface (17) is arranged on the bottom surface of the shell (2), one end of a power supply wire in the power supply and communication cable interface (17) is connected with the power supply input end of the differential operation module (11), the power supply input end of the AD conversion module (12), the power supply input end of the micro-processing module (13) and the power supply input end of the display (8), the other end of the power supply wire in the power supply and communication cable interface (17) is connected with the power supply module (18), and the communication wire in the power supply and communication cable interface (17) is used for being connected with external equipment;
The differential operation module (11) comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, an operational amplifier U2A, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a resistor R16, a capacitor C5, a capacitor C6, a capacitor C7, a capacitor C8 and an operational amplifier U2B, the AD conversion module (12) comprises an AD conversion chip U3, the micro-processing module (13) comprises a micro-processing chip U1, and the display comprises a chip LCD1, wherein:
One end of a resistor R1 is connected with a signal output end of a first detector (5), wherein one end of the resistor R1 is a first signal input end of a differential operation module (11), the other end of the resistor R1 is connected with one end of a resistor R3 and one end of a capacitor C1, the other end of the capacitor C1 is grounded, the other end of the resistor R3 is connected with one end of a resistor R5, one end of a resistor R6 and one end of a capacitor C2, the other end of the capacitor C2 is grounded, the other end of the resistor R6 is a power input end of the differential operation module (11), and the other end of the resistor R5 is connected with a non-inverting input end of an operational amplifier U2A; one end of a resistor R2 is connected with a signal output end of a third detector (7), wherein one end of the resistor R2 is a second signal input end of the differential operation module (11), the other end of the resistor R2 is connected with one end of a resistor R4 and one end of a capacitor C3, the other end of the capacitor C3 is grounded, the other end of the resistor R4 is connected with one end of a resistor R7, one end of a capacitor C4, one end of a resistor R8 and an inverting input end of the operational amplifier U2A, the other end of the capacitor C4 and the other end of the resistor R7 are grounded, and the other end of the resistor R8 is connected with an output end of the operational amplifier U2A, wherein the output end of the operational amplifier U2A is a signal output end of the differential operation module (11); one end of a resistor R9 is connected with a signal output end of the second detector (6), wherein one end of the resistor R9 is a third signal input end of the differential operation module (11), the other end of the resistor R9 is connected with one end of the resistor R11 and one end of a capacitor C5, the other end of the capacitor C5 is grounded, the other end of the resistor R11 is connected with one end of a resistor R13, one end of a resistor R14 and one end of a capacitor C6, the other end of the capacitor C6 is grounded, the other end of the resistor R14 is a power input end of the differential operation module (11), and the other end of the resistor R13 is connected with a non-inverting input end of an operational amplifier U2B; one end of a resistor R10 is connected with a signal output end of a third detector (7), wherein one end of the resistor R10 is a fourth signal input end of a differential operation module (11), the other end of the resistor R10 is connected with one end of a resistor R12 and one end of a capacitor C7, the other end of the capacitor C7 is grounded, the other end of the resistor R12 is connected with one end of a resistor R15, one end of a capacitor C8, one end of a resistor R16 and an inverting input end of an operational amplifier U2B, the other end of the resistor C8 and the other end of the resistor R15 are grounded, the other end of the resistor R16 is connected with an output end of the operational amplifier U2B, the output end of the operational amplifier U2A is connected with an IN0 end of an AD conversion chip U3, the output end of the AD conversion chip U2B is connected with an IN1 end of the AD conversion chip U3, the VREF+ end of the AD conversion chip U3 is a power input end of the AD conversion module (12), the VREF-end of the AD conversion chip U3 is grounded, the OUT1 end of the AD conversion chip U3 is respectively connected with an OUT8 end of the micro-chip P1.0 to the power supply end of the micro-chip P1 and the micro-chip P1 end of the micro-chip P1 to the micro-chip P1.P 1 end of the micro-chip P0.P 1 to the micro-chip P1 end of the micro-chip P0.P 1 and the micro-chip P1 end of the micro-chip P1 is connected with the micro-chip P1.P 1 end of the micro-chip P1;
the wavelength of the infrared light screened by the first optical filter (3) is 750-850 nm, and the wavelength of the infrared light screened by the second optical filter (4) is 915-1050 nm.
2. The bicolor infrared temperature measurement device according to claim 1, wherein the temperature calculation device further comprises an input module (14), and a signal output end of the input module (14) is connected with a second signal input end of the micro-processing module (13).
3. The bicolor infrared temperature measurement device according to claim 1 or 2, further comprising a fastening nut (15) and a bracket (16), wherein the bracket (16) is fixed on the periphery of the objective lens knob (1) through the fastening nut (15).
4. The dual-color infrared temperature measurement device of claim 2, wherein the input module (14) comprises a resistor R16, a resistor R17, a resistor R18, a key switch K1, a key switch K2, and a key switch K3, wherein: one end of a resistor R16 is connected with the P2.3 end of the micro-processing chip U1, the other end of the resistor R16 is connected with one end of a key switch K1, the other end of the key switch K1 is grounded, one end of a resistor R17 is connected with the P2.2 end of the micro-processing chip U1, the other end of the resistor R17 is connected with one end of the key switch K2, the other end of the key switch K2 is grounded, one end of a resistor R18 is connected with the P2.4 end of the micro-processing chip U1, the other end of the resistor R18 is connected with one end of the key switch K3, and the other end of the key switch K3 is grounded.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201937548U (en) * | 2011-03-11 | 2011-08-17 | 黑龙江科技学院 | Self-adapting distributive optical fiber temperature measuring laser detection amplifier |
| CN204064466U (en) * | 2014-07-11 | 2014-12-31 | 安徽工程大学 | A kind of automobile-used infrared temperature measurement apparatus |
| CN204515026U (en) * | 2015-02-03 | 2015-07-29 | 江汉大学 | A kind of device detecting electromagnetic radiation |
| CN209416498U (en) * | 2018-12-18 | 2019-09-20 | 山西德润翔电力科技有限公司 | Double color infrared ray device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2918449B1 (en) * | 2007-07-02 | 2010-05-21 | Ulis | DEVICE FOR DETECTING INFRARED RADIATION WITH BOLOMETRIC DETECTORS |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201937548U (en) * | 2011-03-11 | 2011-08-17 | 黑龙江科技学院 | Self-adapting distributive optical fiber temperature measuring laser detection amplifier |
| CN204064466U (en) * | 2014-07-11 | 2014-12-31 | 安徽工程大学 | A kind of automobile-used infrared temperature measurement apparatus |
| CN204515026U (en) * | 2015-02-03 | 2015-07-29 | 江汉大学 | A kind of device detecting electromagnetic radiation |
| CN209416498U (en) * | 2018-12-18 | 2019-09-20 | 山西德润翔电力科技有限公司 | Double color infrared ray device |
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