Single-point temperature measurement equipment and temperature measurement system

Abstract

The invention provides single-point temperature measurement equipment and a temperature measurement system, and belongs to the technical field of infrared temperature measurement. The single-point temperature measurement device comprises a single-point infrared temperature measurement module, a line laser module fixing support and a line laser module, the line laser module fixing support is connected to the single-point infrared temperature measurement module, and the line laser module is connected to the temperature measurement line laser module fixing support. A single-point infrared temperature measurement module body of the single-point infrared temperature measurement module penetrates through the temperature measurement line laser module fixing bracket and the line laser module; at least two groups of line laser lamps are arranged on one side, penetrating through the single-point infrared temperature measurement module body, of the line laser module, laser emitted by the two groups of line laser lamps intersects to form a light beam, and the light beam is in the axial center direction of the single-point infrared temperature measurement module body. And the single-point temperature measuring equipment realizes accurate positioning of temperature measuring points.

Description

Technical Field

[0001] The present invention relates to the field of infrared temperature measurement technology, and in particular to a single-point temperature measurement device and a temperature measurement system. Background Art

[0002] Infrared temperature measurement equipment is based on the blackbody radiation law. It captures the infrared radiation energy emitted by objects and derives the temperature through photoelectric conversion and algorithm processing. It is widely used in industrial testing, medical diagnosis and other fields.

[0003] However, existing single-point infrared non-contact temperature measurement cannot accurately locate the exact position corresponding to the measured temperature. Summary of the Invention

[0004] The present invention provides a single-point temperature measurement device and a temperature measurement system to solve the technical problems raised by the above background technology.

[0005] In order to solve the above technical problems, the present invention discloses a single-point temperature measurement device, comprising: A single-point infrared temperature measurement module, a line laser module fixing bracket, and a line laser module. The line laser module fixing bracket is connected to the single-point infrared temperature measurement module, and the line laser module is connected to the temperature measurement line laser module fixing bracket. The single-point infrared temperature measurement module body of the single-point infrared temperature measurement module passes through the temperature measurement line laser module fixing bracket and the line laser module. At least two groups of line laser lights are placed on the line laser module on one side through which the single-point infrared temperature measurement module body passes. The lasers emitted by the two groups of line laser lights intersect to form light beams, and the light beams are in the axial center direction of the single-point infrared temperature measurement module body.

[0006] Preferably, the line laser module fixing bracket includes a plate body 1, the plate body 1 is provided with a through hole, the through hole is used for the single-point infrared temperature measurement module body to pass through, and the line laser light is arranged on the side of the through hole.

[0007] Preferably, the linear laser light is tangent to the outer shape of the single-point infrared temperature measurement module body.

[0008] Preferably, the single-point infrared temperature measurement module includes: a second plate body, on which the single-point infrared temperature measurement module body is mounted.

[0009] Preferably, the line laser light uses visible light.

[0010] Preferably, the line laser light uses a low-power milliwatt-level laser chip, and the operating mode selects a low duty cycle and high frequency mode.

[0011] Preferably, it also includes: Storage device: stores the absorption rate of the measured object to the line laser light, the ambient illumination-minimum required laser power fitting curve; the line laser light power-standard laser power efficiency fitting curve of the measured object at the standard temperature measurement distance between the single-point infrared temperature measurement module body and the measured object; An intelligent control device, the intelligent control device being electrically connected to the single-point infrared temperature measurement module body and the linear laser light respectively; Environmental detection module: used to detect environmental parameters of the environment where the single-point infrared temperature measurement module body is located. The intelligent control device is electrically connected to the storage device and the environmental detection module respectively; The intelligent control device controls the operation of the linear laser light based on the storage device, the environment detection module, and the single-point infrared temperature measurement module body.

[0012] Preferably, the intelligent control device includes: A first acquisition module: configured to acquire content stored in a storage device; A first determining module: configured to determine a first temperature measurement time based on a standard temperature measurement distance of the single-point infrared temperature measurement module body and the single-point infrared temperature measurement module body; The second determination module is used to determine the target minimum required line laser light power corresponding to the current ambient illumination detected by the environment detection module in the ambient illumination-minimum required laser power fitting curve and the line laser light power-standard laser power fitting curve at the temperature measurement point of the measured object; Correction module: used to determine the target standard laser power efficiency based on the target minimum required laser power determined by the second determination module and the standard laser power efficiency fitting curve of the line laser light power-measured object, and correct the target standard laser power efficiency based on the detection result of the environment detection module to obtain the corrected laser power efficiency; A first calculation module: used to calculate the first output power of the line laser light corresponding to the current measured object based on the corrected laser power efficiency and the target minimum required line laser light power; Control module: used to control the actual output laser power of the line laser lamp to be the first output power during a single temperature measurement process of the current measured object by the single-point infrared temperature measurement module body.

[0013] Preferably, the intelligent control device further includes: The second calculation module is used to calculate the target irradiation time range of the line laser light on the current object under test based on the target minimum required laser power and the allowable laser irradiation temperature rise range of the current object under test, and determine the total allowable irradiation time of the line laser light for a single irradiation; Control module: used to control the actual irradiation time of the line laser light to be the total allowable irradiation time of the line laser light during a single temperature measurement process of the current measured object by the single-point infrared temperature measurement module body.

[0014] The invention also discloses a temperature measurement system, comprising the single-point temperature measurement device.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present application provides a method for implementing a single-point temperature measurement device that can achieve accurate positioning. The method is simple, easy to implement, and low in cost.

[0016] The single-point infrared temperature measurement module is a component that obtains the temperature of the object being measured by infrared means; The line laser module is a component that realizes two intersecting line lasers; The line laser module fixing bracket is a structural component that can realize the accurate positioning of the single-point infrared temperature measurement module and the line laser module.

[0017] The two laser beams must be tangent to the single-point infrared temperature measurement module. This ensures that the laser beam from each laser beam passes through the center of the module. This ensures that the intersection of the two laser beams is the center of the module. This center point remains constant despite changes in distance from the object being measured. Laser beams use visible light (such as a 660° red laser), and the temperature measured is the temperature of the object's intersection.

[0018] Line lasers can use low-power milliwatt-level laser chips, and the working mode can be selected as a low duty cycle, high frequency mode, which does not affect subjective visual judgment and can also ignore the impact of light on the temperature of the object being measured.

[0019] The present invention solves the problem raised in the background art that the existing single-point infrared non-contact temperature measurement cannot accurately locate the precise position corresponding to the measured temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a schematic diagram of the structural decomposition of the present invention; Figure 2 It is a schematic diagram of the overall structure of the present invention; Figure 3 Schematic diagram of the optical path of the present invention; Figure 4 A schematic diagram of the present invention irradiating an object to be measured; Figure 5 is a schematic diagram of a line laser light of the present invention; Figure 6 Schematic diagram of the distribution of the line laser light of the present invention.

[0022] In the figure: 1. Single-point infrared temperature measurement module; 11. Single-point infrared temperature measurement module body; 12. Board 2; 2. Line laser module fixing bracket; 3. Line laser module; 31. Line laser light; 32. Board 1; 33. Through hole; 4. Measured object; 5. Temperature measurement point. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0024] Example 1: The embodiment of the present invention provides a single-point temperature measurement device, such as Figures 1-6 Shown, including: Single-point infrared temperature measurement module 1, line laser module fixing bracket 2, line laser module 3, the line laser module fixing bracket 2 is connected to the single-point infrared temperature measurement module 1, the line laser module 3 is connected to the temperature measurement line laser module fixing bracket 2, and the single-point infrared temperature measurement module body 11 of the single-point infrared temperature measurement module 1 passes through the temperature measurement line laser module fixing bracket 2 and the line laser module 3; At least two groups of line laser lights 31 are placed on the line laser module 3 on one side of the single-point infrared temperature measurement module body 11. The lasers emitted by the two groups of line laser lights 31 intersect to form light beams, and the light beams are in the axial center direction of the single-point infrared temperature measurement module body 11.

[0025] The line laser module fixing bracket 2 includes a plate 32 , and the plate 32 is provided with a through hole 33 . The through hole 33 is used for the single-point infrared temperature measurement module body 11 to pass through, and the line laser light 31 is arranged on the side of the through hole 33 .

[0026] The linear laser light 31 is tangent to the outer shape of the single-point infrared temperature measurement module body 11 .

[0027] The single-point infrared temperature measurement module 1 includes a second plate 12 , on which the single-point infrared temperature measurement module body 11 is mounted.

[0028] The line laser light 31 uses visible light.

[0029] The line laser light 31 uses a low-power milliwatt-level laser chip, and the working mode is a low duty cycle and high frequency mode.

[0030] Two line laser lights 31 are the minimum configuration, and the number is not limited to two.

[0031] Line laser is visible light, not limited to 660nm.

[0032] The present invention also discloses a temperature measurement system, which includes the single-point temperature measurement device.

[0033] The beneficial effects of the above technical solution are: The present application provides a method for implementing a single-point temperature measurement device that can achieve accurate positioning. The method is simple, easy to implement, and low in cost.

[0034] The single-point infrared temperature measurement module 1 is a component that obtains the temperature of the object 4 to be measured by infrared means; Line laser module 3 is a component that realizes two intersecting line lasers; The line laser module fixing bracket 2 is a structural component that can realize accurate positioning of the single-point infrared temperature measurement module 1 and the line laser module 3.

[0035] The two line laser lights 31 need to be tangent to the outer shape of the single-point infrared temperature measurement module body 11 to ensure that the laser light emitted by each line laser passes through the center point of the single-point infrared temperature measurement module body 11. In this way, the intersection of the two line lasers is the center point of the single-point infrared temperature measurement module body 11. This center point will not change with the change of the distance from the object to be measured 4 and will always coincide.

[0036] Line laser uses visible light (such as 660 red laser), and the temperature measured is the temperature of the intersection of the object being measured. The intersection point on the object being measured 4 is the temperature measurement point 5; Line lasers can use low-power milliwatt-level laser chips, and the working mode can be selected as a low duty cycle, high frequency mode, which does not affect subjective visual judgment and can also ignore the impact of light on the temperature of the object being measured.

[0037] The present invention solves the problems raised in the background technology: The existing single-point infrared non-contact temperature measurement cannot accurately locate the exact position corresponding to the measured temperature.

[0038] Example 2, based on Example 1, further includes: Storage device: stores the absorptivity of the object 4 to the line laser light 31, a fitting curve of ambient illumination versus minimum required laser power; a fitting curve of the power of the line laser light 31 versus the standard laser power efficiency of the object 4 at a standard temperature measurement distance between the single-point infrared temperature measurement module body 11 and the object 4, and a fitting curve of the power of the line laser light 31 versus the standard laser power at the temperature measurement point of the object 4; all of the above curves are determined based on testing; An intelligent control device, which is electrically connected to the single-point infrared temperature measurement module body 11 and the line laser light 31 respectively; Environmental detection module: used to detect the environmental parameters of the environment where the single-point infrared temperature measurement module body 11 is located. The intelligent control device is electrically connected to the storage device and the environmental detection module respectively; The intelligent control device controls the operation of the linear laser light 31 based on the storage device, the environment detection module, and the single-point infrared temperature measurement module body 11 .

[0039] Wherein, the intelligent control device includes: A first acquisition module: configured to acquire content stored in a storage device; A first determination module is used to determine a first temperature measurement time based on a standard temperature measurement distance of the single-point infrared temperature measurement module body 11 and the single-point infrared temperature measurement module body 11; wherein the standard temperature measurement distance is the optimal temperature measurement distance calibrated by the device, such as 10 cm; the first temperature measurement time is the time from the start of the temperature measurement distance to the completion of the temperature measurement, which satisfies the temperature measurement requirements of the single-point infrared temperature measurement module body 11 at the standard temperature measurement distance (such as meeting "physical thermal balance" + "sensor response"); A second determination module is used to determine the target minimum required laser power corresponding to the current ambient illumination detected by the environmental detection module in the ambient illumination-minimum required laser power fitting curve; the abscissa of the ambient illumination-minimum required laser power fitting curve is the ambient illumination, and the ordinate is the minimum required laser power required for the corresponding abscissa (the minimum laser power required at the temperature measurement point (intersection point) to ensure that the laser light emitted by the line laser light 31 is clearly visible and identifiable on the measured object 4 (meeting the temperature measurement and alignment requirements of the equipment) for the ambient illumination on the abscissa). Correction module: used to determine the target standard laser power efficiency based on the target minimum required laser power determined by the second determination module (the target minimum required laser power at the temperature measurement point of the measured object 4) and the line laser light 31 power-standard laser power efficiency fitting curve of the measured object 4 (obtain the target minimum required laser power determined by the second determination module, the target line laser light 31 power corresponding to the line laser light 31 power-standard laser power fitting curve at the temperature measurement point of the measured object 4, and determine the target line laser light 31 power and the target standard laser power efficiency in the line laser light 31 power-standard laser power efficiency fitting curve of the measured object 4), and correct the target standard laser power efficiency based on the detection result of the environment detection module to obtain a corrected laser power efficiency; ; in, is the corrected laser power efficiency; The target standard laser power efficiency is the power of the line laser light 31 - the standard laser power efficiency fitting curve of the object 4 to be measured is based on the reference ambient temperature , reference ambient humidity , baseline particulate matter concentration Get the test result by 、 、 They are the ambient temperature, ambient humidity, and ambient particulate matter concentration detected by the environmental detection module; 、 、 They are the correction coefficient of ambient temperature on laser power efficiency (unit is 1 / ℃), the correction coefficient of ambient humidity on laser power efficiency (if the unit of ambient humidity is %, the unit of this correction coefficient is 1 / %), and the correction coefficient of ambient particulate matter concentration on laser power efficiency (unit is); The first calculation module: used for corrected laser power efficiency And the minimum required laser power Calculate the first output power of the line laser light 31 corresponding to the current object 4 ; in, ; The second calculation module is used to calculate the target irradiation time range of the line laser light 31 on the current object 4 to be measured (which can be determined based on the existing temperature rise model of the laser irradiated object) based on the target minimum required laser power and the current allowable laser irradiation temperature rise range of the object 4 to be measured, and determine the total allowable irradiation time of a single irradiation of the line laser light 31; The target irradiation time range of the line laser light 31 to the current measured object 4 is ; is the minimum value of the allowable laser irradiation temperature rise range of the current object 4 under test; is the maximum value of the temperature rise range allowed by laser irradiation of the current object 4 under test; is the heat capacity of the current measured area of ​​the current measured object 4 (unit: J / °C); is the absorption rate of the current object 4 to the line laser light 31; ; The rate of change of absorbance with temperature, in units of 1 / °C, can be based on laboratory calibration; is the reference absorptivity of the line laser light 31 of the current object 4 being measured (corresponding to the reference conditions (including the reference ambient temperature)).

[0040] The total irradiation time of a single irradiation of the line laser light 31 is , t is the time when the laser of the line laser light 31 irradiates the current measured area of ​​the current measured object 4; exist The total irradiation time that is less than or equal to the first temperature measurement time is selected as the total allowable irradiation time for a single irradiation of the line laser lamp 31 (the average value of the smallest N values ​​can be selected); Control module: used to control the actual output laser power of the line laser lamp 31 to be the first output power during a single temperature measurement of the current object 4 by the single-point infrared temperature measurement module body 11, and to control the actual irradiation time of the line laser lamp 31 to be the total allowable irradiation time of a single irradiation of the line laser lamp 31.

[0041] 1. Standard temperature measurement distance acquisition method: equipment factory calibration + on-site verification. Process: (1) Factory calibration: simulate an ideal environment (constant temperature, constant humidity, no interference) in the laboratory, test the temperature measurement accuracy at different distances, and select the distance with the "highest accuracy" as the standard temperature measurement distance; (2) On-site verification: In actual applications, if the environmental interference is large (such as strong radiation, vibration), the standard temperature measurement distance can be fine-tuned and recalibrated.

[0042] 2. Method for obtaining the first temperature measurement time: laboratory thermal balance experiment + sensor response test. Process: (1) Thermal balance test: At a standard temperature measurement distance, use a blackbody furnace to simulate different temperatures and test the time required for "temperature stabilization"; (2) Response test: Test the time it takes for the infrared sensor to go from "receiving radiation" to "outputting a stable signal"; (3) Comprehensive determination: Determine the maximum time of (1) and (2) as the first temperature measurement time and pre-store it in the storage device.

[0043] 3. Method for obtaining allowable temperature rise: Material standard table lookup + destructive test. Process: (1) Look up the table: According to the material of the object being measured (such as electronic components, biological tissue), check the industry standard / database to obtain the allowable temperature rise; (2) Destructive test: Perform a gradient temperature rise test on the object under test and record the “critical temperature of performance degradation” as the allowable temperature rise.

[0044] The beneficial effects of the above scheme are: Dynamically adjusting laser power based on the "ambient illumination-minimum required laser power fitting curve" ensures clear visibility of the laser mark (offsetting ambient light interference), addressing the pain points of traditional infrared temperature measurement, including difficulty in alignment and large errors. Combined with the coordinated control of the "standard temperature measurement distance + first measurement time," this ensures "physical thermal balance + complete sensor response" during temperature measurement, improving single-point temperature measurement accuracy (for example, from ±2°C to ±0.5°C).

[0045] Using the "line laser light 31 power-to-measure object 4 standard laser power efficiency fitting curve and the line laser light 31 power-to-measure object 4 standard laser power fitting curve at the temperature measurement point" to correct the impact of environmental parameters (temperature, humidity, particulate matter) on laser energy transmission, ensure that the laser energy acts accurately at the temperature measurement point (avoiding alignment failure due to environmental attenuation).

[0046] The environmental detection module covers temperature, humidity, and particulate matter concentration, and dynamically compensates for laser power efficiency through correction coefficients, allowing the system to operate stably in complex environments (such as high-temperature workshops, rainy and foggy outdoor weather).

[0047] The storage device pre-stores parameters such as "absorption rate, heat capacity", and calculates the irradiation time in combination with the "allowable temperature rise range", adapting to objects of different materials (metal, rubber, biological tissue, etc.) to expand application scenarios (such as industrial production lines, medical testing, and environmental monitoring).

[0048] The maximum exposure time is calculated by combining "allowable temperature rise range + heat capacity + absorptivity" to limit thermal damage to the object being measured (for example, preventing failure of precision electronic components due to excessive temperature rise). Furthermore, dynamic correction of absorptivity with temperature further reduces the risk of overexposure. System redundancy and collaboration.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A single-point temperature measurement device, characterized in that: include: A single-point infrared temperature measurement module (1), a line laser module fixing bracket (2), and a line laser module (3), wherein the line laser module fixing bracket (2) is connected to the single-point infrared temperature measurement module (1), the line laser module (3) is connected to the temperature measurement line laser module fixing bracket (2), and the single-point infrared temperature measurement module body (11) of the single-point infrared temperature measurement module (1) passes through the temperature measurement line laser module fixing bracket (2) and the line laser module (3); At least two groups of line laser lamps (31) are placed on the line laser module (3) on one side through which the single-point infrared temperature measurement module body (11) passes. The lasers emitted by the two groups of line laser lamps (31) intersect to form light beams, and the light beams are in the axial center direction of the single-point infrared temperature measurement module body (11).

2. A single-point temperature measurement device according to claim 1, characterized in that: The line laser module fixing bracket (2) comprises: A plate body (32) is provided with a through hole (33) on the plate body (32), the through hole (33) is used for the single-point infrared temperature measurement module body (11) to pass through, and the line laser light (31) is provided on the side of the through hole (33).

3. The single-point temperature measurement device according to claim 1, characterized in that: The linear laser light (31) is tangent to the outer shape of the single-point infrared temperature measurement module body (11).

4. The single-point temperature measurement device according to claim 1, characterized in that: The single-point infrared temperature measurement module (1) includes: A second plate body (12) is provided on which a single-point infrared temperature measurement module body (11) is installed.

5. The single-point temperature measurement device according to claim 1, characterized in that: The line laser light (31) adopts visible light.

6. The single-point temperature measurement device according to claim 1, characterized in that: The line laser light (31) uses a low-power milliwatt-level laser chip, and the working mode selects a low duty cycle and high frequency mode.

7. The single-point temperature measurement device according to claim 1, characterized in that: Also includes: The storage device stores the absorption rate of the measured object (4) to the line laser light (31), the ambient illumination-minimum required laser power fitting curve; and the line laser light (31) power-standard laser power efficiency fitting curve of the measured object (4) at the standard temperature measurement distance between the single-point infrared temperature measurement module body (11) and the measured object (4); An intelligent control device, the intelligent control device being electrically connected to the single-point infrared temperature measurement module body (11) and the linear laser light (31) respectively; Environmental detection module: used for detecting environmental parameters of the environment where the single-point infrared temperature measurement module body (11) is located, and the intelligent control device is electrically connected to the storage device and the environmental detection module respectively; The intelligent control device controls the operation of the linear laser light (31) based on the storage device, the environment detection module, and the single-point infrared temperature measurement module body (11).

8. The single-point temperature measurement device according to claim 7, characterized in that: The intelligent control device includes: A first acquisition module: used to acquire the content stored in the storage device; A first determination module is used to determine a first temperature measurement time based on a standard temperature measurement distance of the single-point infrared temperature measurement module body (11) and the single-point infrared temperature measurement module body (11); The second determination module is used to determine the target minimum required line laser light (31) power corresponding to the current environmental illumination detected by the environmental detection module in the environmental illumination-minimum required laser power fitting curve and the standard laser power fitting curve of the line laser light (31) power-temperature measurement point of the measured object (4); A correction module is used to determine a target standard laser power efficiency based on a target minimum required laser power determined by the second determination module and a standard laser power efficiency fitting curve of the power of the line laser light (31) and the object to be measured (4), and to correct the target standard laser power efficiency based on a detection result of the environment detection module to obtain a corrected laser power efficiency; A first calculation module is used to calculate a first output power of the line laser light (31) corresponding to the current measured object (4) based on the corrected laser power efficiency and the target minimum required line laser light (31) power; A control module is used to control the actual output laser power of the line laser lamp (31) to be the first output power during a single temperature measurement process of the current measured object (4) by the single-point infrared temperature measurement module body (11).

9. The single-point temperature measurement device according to claim 8, characterized in that: The intelligent control device also includes: The second calculation module is used to calculate the target irradiation time range of the line laser light (31) on the current object (4) to be measured based on the target minimum required laser power and the allowable laser irradiation temperature rise range of the current object (4) to be measured, and to determine the total allowable irradiation time of a single irradiation of the line laser light (31); The control module is used to control the actual irradiation time of the line laser light (31) to be the total permissible irradiation time of the line laser light (31) during a single temperature measurement process of the current measured object (4) by the single-point infrared temperature measurement module body (11).

10. A temperature measurement system, characterized in that: The temperature measurement system includes a single-point temperature measurement device according to any one of claims 1 to 9.

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