infrared temperature measuring instrument

Abstract

The utility model discloses an infrared temperature measuring instrument can according to the infrared collection area distance size of measured object and infrared temperature measuring instrument exports the temperature result of proper precision, the utility model adopts the technical scheme: a kind of infrared temperature measuring instrument, including shell, infrared sensor, light shield and control circuit, the light shield is located on the shell, the infrared collection area in the infrared sensor front is located in the light shield, the control circuit includes temperature detection unit and object temperature detection unit, the infrared temperature measuring instrument still includes ranging sensor, the ranging sensor is used to detect the distance between the infrared collection area and measured object, the control circuit is suitable for according to the distance size measured by the ranging sensor corresponding selection temperature calculation output measurement result of the object temperature detection unit or temperature detection unit.

Description

Technical Field

[0001] This utility model belongs to the field of infrared temperature measurement technology, and specifically relates to an infrared thermometer. Background Technology

[0002] Objects above absolute zero constantly emit infrared radiation energy into the surrounding space. Infrared thermometers passively receive the infrared energy radiated by the object being measured, then convert the light signal into an electrical signal using an infrared sensor. After signal amplification and analog-to-digital conversion, the temperature of the object is calculated.

[0003] In the existing technology, users have different requirements for the accuracy of temperature measurement results of infrared thermometers for different usage environments. Therefore, there is an urgent need in the market for a thermometer that can output appropriate accuracy results according to the usage scenario of the infrared thermometer. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the technical problem solved by this utility model is to provide an infrared thermometer that can output a temperature result with appropriate accuracy according to the distance between the object being measured and the infrared collection area of ​​the infrared thermometer.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an infrared thermometer, including a shell, an infrared sensor, a light-shielding sleeve, and a control circuit. The light-shielding sleeve is disposed on the shell, and the infrared collection area in front of the infrared sensor is located inside the light-shielding sleeve. The control circuit includes a body temperature detection unit and an object temperature detection unit. The infrared thermometer also includes a distance sensor, which is used to detect the distance between the infrared collection area and the object being measured. The control circuit is adapted to select the object temperature detection unit or the body temperature detection unit according to the distance measured by the distance sensor to calculate the temperature and output the measurement result.

[0006] Furthermore, in this technical solution, the ranging sensor is located inside the light-shielding sleeve and around the infrared collection area.

[0007] Furthermore, this technical solution also includes an indicator light, which is disposed on the housing and electrically connected to the control circuit. The indicator light is used to indicate whether the temperature calculation of the current measurement result uses a body temperature detection unit or an object temperature detection unit.

[0008] Furthermore, this technical solution also includes a display screen, which is disposed on the housing and electrically connected to the control circuit. The display screen is adapted to display whether the temperature calculation of the current measurement result uses a body temperature detection unit or an object temperature detection unit.

[0009] Furthermore, this technical solution also includes a power supply, which is located inside the housing and is used to supply power to the various components in the infrared thermometer.

[0010] Furthermore, this technical solution also includes a charging interface, which is located on the housing and is used to connect to an external power source to charge the power supply and / or to power the infrared thermometer.

[0011] Furthermore, this technical solution also includes a measurement button, which is located on the housing. The measurement button is used to send a temperature measurement signal to the control circuit. The distance sensor and the infrared sensor start working after the measurement button sends the temperature measurement signal.

[0012] Furthermore, in this technical solution, the outer shell has a gripping area below the light-shielding sleeve, and the measurement button is located between the light-shielding sleeve and the gripping area.

[0013] Furthermore, in this technical solution, the body temperature detection unit outputs the measurement result at ±0.2℃ of the measured temperature, and the object temperature detection unit outputs the measurement result at ±2℃ of the measured temperature or 2% of the measured temperature.

[0014] Furthermore, this technical solution also includes a metal sleeve and a lens. The light-shielding sleeve has a through hole in the middle part, the lens is located in the middle part of the metal sleeve, and the two ends of the metal sleeve are respectively connected to the through hole and the infrared sensor. The light-shielding sleeve is used to prevent light from the side of the through hole from entering the through hole.

[0015] The main beneficial effects of the technical solution provided by this utility model are as follows: Due to the setting of the distance sensor, the distance sensor is used to detect the distance between the infrared collection area and the object being measured. The control circuit selects the object temperature detection unit or the body temperature detection unit according to the distance measured by the distance sensor to calculate the temperature and output the measurement result. Currently, the body temperature detection mode requires higher temperature measurement accuracy. To reduce errors, users usually measure body temperature close to the human body. The object temperature detection mode requires lower temperature measurement accuracy. During measurement, the infrared collection area (infrared collection area) is usually a certain distance away from the object being measured. Therefore, the infrared thermometer in this application can output a temperature result with appropriate accuracy according to the distance between the object being measured and the infrared collection area of ​​the infrared thermometer. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional view of the infrared thermometer in the first direction in an embodiment of this utility model.

[0018] Figure 2 This is a three-dimensional view of the infrared thermometer in another direction in an embodiment of this utility model.

[0019] Figure 3 This is a left view of the infrared thermometer in this embodiment of the utility model.

[0020] Figure 4 This is a schematic diagram of the internal structure of the infrared thermometer in this embodiment of the utility model.

[0021] Figure 5 This is a schematic diagram of the control circuit in an embodiment of this utility model. Detailed Implementation

[0022] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. It should be understood that the specific embodiments described in this part are only used to explain this utility model and are not intended to limit this utility model.

[0023] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. For ease of description, spatial relative relationship terms can be used to describe the relationship between one element or feature and another element or feature as shown in the accompanying drawings.

[0024] Furthermore, the technical features involved in the different embodiments described below can be combined with each other as long as they do not conflict with each other.

[0025] like Figure 1 , Figure 2 , Figure 3The diagram shown is a structural schematic of an infrared thermometer 100 provided in a preferred embodiment of this utility model. The infrared thermometer 100 includes a housing 110, a display screen 120, a measurement button 130, a control button 140, a light-shielding sleeve 150, and an indicator light 170. The light-shielding sleeve 150 is fixedly mounted on the housing 110. The display screen 120, indicator light 170, and control button 140 are located on one side of the housing 110, while the measurement button 130 and light-shielding sleeve 150 are located on the other side of the housing 110. The measurement button 130 is positioned below the light-shielding sleeve 150.

[0026] like Figure 2 , Figure 4 As shown, the light-shielding sleeve 150 has a through hole 151 in the middle. The light-shielding sleeve 150 is used to prevent light from the side of the through hole 151 from entering the through hole 151, so as to ensure that the light entering the through hole 151 is as close as possible to the front of the through hole 151. The housing 110 contains an infrared sensor 111, a metal sleeve 112, a distance sensor 113, a lens 114, a control circuit board 160, and a power supply 180. The power supply 180 is used to power the various components in the infrared thermometer 100. The two ends of the metal sleeve 112 are respectively connected to the through hole 151 and the infrared sensor 111. The lens 114 is located in the middle of the metal sleeve 112. The distance sensor 113 is located on the light shield 150 and is located around the infrared collection area (the opening of the through hole 151) in front of the infrared sensor 111. The infrared sensor 111 and the distance sensor 113 are respectively electrically connected to the control circuit board 160. The distance sensor 113 is used to detect the distance between the infrared collection area and the object being measured. The infrared sensor 111 is used to receive the infrared energy radiated by the object being measured and convert it into an electrical signal.

[0027] like Figure 4 , Figure 5As shown, the outer casing 110 is equipped with a charging interface 190, which is used to connect an external power source to charge the power supply 180 or to power the infrared thermometer 100. The control circuit board 160 is equipped with a control circuit 161, which includes a body temperature detection unit 1611, a microprocessor 1613, and an object temperature detection unit 1612. The microprocessor 1613 controls the operation of each component. For example, the microprocessor 1613 in the control circuit 161 is adapted to select either the object temperature detection unit 1612 or the body temperature detection unit 1611 to calculate and output the temperature measurement result based on the distance measured by the distance sensor 113. Specifically, if the distance measured by the distance sensor 113 is within 1 cm (inclusive), the body temperature detection unit 1611 is used to calculate and output the temperature measurement result; if the distance exceeds 1 cm, the object temperature detection unit 1612 is selected to calculate and output the temperature measurement result. Indicator light 170 is electrically connected to control circuit 161. Indicator light 170 indicates whether the temperature calculation of the current measurement result uses body temperature detection unit 1611 or object temperature detection unit 1612. Display screen 162 is electrically connected to control circuit 161. Display screen 162 can also be set to display whether the temperature calculation of the current measurement result uses body temperature detection unit 1611 or object temperature detection unit 1612, depending on market needs. In this embodiment, body temperature detection unit 1611 outputs the measurement result according to the measured temperature ±0.2℃, and object temperature detection unit 1612 outputs the measurement result according to the measured temperature ±2℃ or 2% of the measured temperature.

[0028] like Figure 2 As shown, the outer casing 110 has a grip area 115 below the light-shielding sleeve 150, and the measurement button 130 is located between the grip area 115 and the light-shielding sleeve 150. The measurement button 130 is used to send a temperature measurement signal to the control circuit 161. The distance sensor 113 and the infrared sensor 111 start working after the measurement button 130 sends the temperature measurement signal.

[0029] Due to the setting of the ranging sensor 113 in the above embodiment, the ranging sensor 113 is used to detect the distance between the infrared collection area and the object being measured. The microprocessor 1613 in the control circuit 161 selects the object temperature detection unit 1612 or the body temperature detection unit 1611 to perform temperature calculation and output the measurement result according to the distance measured by the ranging sensor 113. The body temperature detection unit 1611 outputs the temperature at ±0.2℃, and the object temperature detection unit 1612 outputs the temperature at ±2℃ or 2% of the measured temperature. Therefore, the infrared thermometer 100 in this application can output a temperature result of appropriate accuracy according to the user's usual usage habits (whether to measure close to the object being measured) by detecting the distance between the measured object and the infrared collection area of ​​the infrared thermometer 100.

[0030] The above specific examples illustrate the principles and implementation methods of this utility model. It should be understood that the above implementation methods are only for the purpose of helping to understand this utility model and should not be construed as limiting this utility model. For those skilled in the art, any minor improvements or equivalent substitutions made to the structural form or construction of this utility model based on the concept of this utility model should be included within its protection scope.

Claims

1. An infrared thermometer, comprising a housing, an infrared sensor, a light-shielding sleeve, and a control circuit, wherein the light-shielding sleeve is disposed on the housing, and the infrared collecting area in front of the infrared sensor is located inside the light-shielding sleeve, characterized in that: The control circuit includes a body temperature detection unit and an object temperature detection unit. The infrared thermometer also includes a distance sensor, which is used to detect the distance between the infrared collection area and the object being measured. The control circuit is adapted to select either the object temperature detection unit or the body temperature detection unit according to the distance measured by the distance sensor to calculate and output the measurement result.

2. The infrared thermometer according to claim 1, characterized in that: The ranging sensor is located inside the light-shielding sleeve and around the infrared collection area.

3. The infrared thermometer according to claim 1, characterized in that: It also includes an indicator light, which is located on the housing and electrically connected to the control circuit. The indicator light is used to indicate whether the temperature calculation of the current measurement result is performed using the body temperature detection unit or the object temperature detection unit.

4. The infrared thermometer according to claim 1, characterized in that: It also includes a display screen, which is disposed on the housing and electrically connected to the control circuit. The display screen is adapted to show whether the temperature calculation of the current measurement result is performed by the body temperature detection unit or the object temperature detection unit.

5. The infrared thermometer according to claim 1, characterized in that: It also includes a power supply, which is located inside the housing and is used to power the various components in the infrared thermometer.

6. The infrared thermometer according to claim 5, characterized in that: It also includes a charging interface, which is located on the housing. The charging interface is used to connect to an external power source to charge the power supply and / or to power the infrared thermometer.

7. The infrared thermometer according to claim 1, characterized in that: It also includes a measurement button, which is located on the housing. The measurement button is used to send a temperature measurement signal to the control circuit. The distance sensor and the infrared sensor start working after the measurement button sends the temperature measurement signal.

8. The infrared thermometer according to claim 7, characterized in that: The outer casing has a grip area below the light-shielding sleeve, and the measurement button is located between the light-shielding sleeve and the grip area.

9. The infrared thermometer according to claim 1, characterized in that: The body temperature detection unit outputs the measurement result at ±0.2℃ of the measured temperature, and the object temperature detection unit outputs the measurement result at ±2℃ of the measured temperature or 2% of the measured temperature.

10. The infrared thermometer according to any one of claims 1 to 9, characterized in that: It also includes a metal sleeve and a lens. The light-shielding sleeve has a through hole in the middle part, and the lens is located in the middle part of the metal sleeve. The two ends of the metal sleeve are respectively connected to the through hole and the infrared sensor. The light-shielding sleeve is used to prevent light from the side of the through hole from entering the through hole.

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