Ear temperature detection device

Abstract

The invention provides an ear temperature detection device which comprises a first heating piece and a second heating piece, under the control of a control unit, the first heating piece is used for heating the front end of an infrared detection module, the second heating piece is used for heating the rear end of the infrared detection module, and through the heating arrangement of the front end and the rear end, the ear temperature is detected. Therefore, the overall temperature of the infrared detection module is more uniform in the incident direction of infrared rays (namely the front-back direction of the infrared detection module), the problem of temperature gradient of the infrared detection module is reduced or completely eradicated, and the measurement accuracy of the infrared detection module is further improved.

Description

Technical Field

[0001] The present application relates to body temperature measurement, and in particular to a detection device for detecting ear temperature using infrared rays. Background Art

[0002] An ear temperature detection device (such as an ear thermometer or other device) is a device that checks the temperature in the ear canal. Taking an ear thermometer as an example, the detection accuracy of this ear thermometer is greatly affected by the ambient temperature, especially in winter environments. The low ambient temperature usually causes interference such as lens fogging, thermal shock and cooling effects, which leads to inaccurate temperature detection. In response to this, a heating element is generally set in the ear thermometer for heating, thereby reducing the problems caused by the low ambient temperature.

[0003] However, although some existing ear thermometers are equipped with heating elements, they still cannot solve the problem of temperature gradient formed by the infrared sensor itself in the direction of infrared radiation. The infrared sensing chip inside the infrared sensor captures the temperature difference between the chip and the target. The temperature gradient formed above will seriously affect the temperature difference between the chip itself and the target, resulting in huge deviations in temperature measurement. Summary of the invention

[0004] The present application provides an ear temperature detection device for improving the accuracy of temperature detection.

[0005] Based on the above objectives, some embodiments of the present application provide an ear temperature detection device, including:

[0006] A probe housing, wherein the probe housing has a detection end, the detection end has a light incident window, and the probe housing encloses a mounting cavity;

[0007] an infrared detection module, the infrared detection module being installed in the installation cavity, and the infrared detection module having a front end facing the light incident window and a rear end away from the front end, the front end being arranged toward the light incident window so that infrared rays emitted by a detection object can be incident on the front end from the light incident window;

[0008] a first heating element, the first heating element being used to heat the front end;

[0009] a second heating element, the second heating element being used to heat the rear end;

[0010] and a control unit, which is electrically connected to the first heating element and the second heating element and is used to control the first heating element and the second heating element so that the temperatures of the front end and the rear end of the infrared detection module are consistent or differ by a set value.

[0011] In the ear temperature detection device shown above, it includes a first heating element and a second heating element. Under the control of the control unit, the first heating element is used to heat the front end of the infrared detection module, and the second heating element is used to heat the rear end of the infrared detection module. Through the heating settings at the front and rear ends, the overall temperature of the infrared detection module is more uniform in the direction of incidence of infrared rays (i.e., the front and rear direction of the infrared detection module), reducing or eliminating the problem of temperature gradient of the infrared detection module itself, thereby improving the measurement accuracy of the infrared detection module.

[0012] In some embodiments, in the axial direction of the light incident window, the first heating element is located at the front side of the front end, and / or the second heating element is located at the rear side of the rear end.

[0013] In some embodiments, the first heating element is a first plate-shaped structure, the second heating element is a second plate-shaped structure, the first heating element, the infrared detection module and the second heating element form a stacked structure, the second disc-shaped structure has a wiring hole, and the connecting wire of the infrared detection module passes through the wiring hole.

[0014] In some embodiments, in the axial direction of the light incident window, the distance between the first heating element and the infrared detection module is less than or equal to 1 mm.

[0015] In some embodiments, the light incident window is a first through hole, and the first heating element has a second through hole, wherein:

[0016] The hole wall of the first through hole is folded toward the side where the infrared detection module is located, and inserted into the second through hole to form an optical tunnel to guide the infrared ray along the optical tunnel toward the infrared detection module;

[0017] Or, the second through hole is in communication with the first through hole, and together they enclose at least a portion of an optical tunnel, so as to guide the infrared ray along the optical tunnel toward the infrared detection module;

[0018] Or, it further includes an optical guide, wherein the optical guide has an optical tunnel for guiding the infrared ray to be emitted toward the infrared detection module, and the optical guide is installed in the first through hole and the second through hole.

[0019] In some embodiments, the control unit has a first flexible circuit board, one end of the first flexible circuit board is located between the first heating element and the infrared detection module, and the first heating element is electrically connected to the first flexible circuit board; the other end of the first flexible circuit board extends along the side of the infrared detection module to the rear side of the infrared detection module.

[0020] In some embodiments, the control unit includes a second flexible circuit board, one end of which is located on the rear side of the second heating element and is electrically connected to the second heating element; the other end of the second flexible circuit board extends rearward along the axial direction of the light incident window in a manner opposite to the first flexible circuit board; and a receiving cavity for installing other components is formed between the first flexible circuit board and the second flexible circuit board.

[0021] In some embodiments, a thermally conductive insulating layer is provided between the first heating element and the infrared detection module, and / or a thermally conductive insulating layer is provided between the infrared detection module and the second heating element.

[0022] In some embodiments, a heat-insulating layer is further included, which is disposed around the circumference of the infrared detection module and separates the infrared detection module from the probe housing.

[0023] In some embodiments, the control unit independently controls the first heating element and the second heating element, respectively, so that the heating temperature of the first heating element and the heating temperature of the second heating element can be different.

[0024] In some embodiments, at least one first temperature detection unit is further included, wherein the first temperature detection unit is used to detect the temperature of the front end of the infrared detection module, the first temperature detection unit is electrically connected to the control unit, and the control unit adjusts the temperature of the first heating element based on the feedback result of the first temperature detection unit.

[0025] In some embodiments, at least one second temperature detection unit is further included, and the second temperature detection unit is used to detect the temperature of the rear end of the infrared detection module; the second temperature detection unit is electrically connected to the control unit, and the control unit adjusts the temperature of the second heating element based on the feedback result of the second temperature detection unit.

[0026] In some embodiments, the first temperature detection unit is at least partially attached to the front end of the infrared detection module, and / or the second temperature detection unit is at least partially attached to the rear end of the infrared detection module.

[0027] In some embodiments, the distance between the first temperature detection unit and the infrared detection module is less than or equal to 5 mm, and / or the distance between the second temperature detection unit and the infrared detection module is less than or equal to 5 mm.

[0028] In some embodiments, the infrared detection module has a module shell made of metal material and a thermoelectric sensing unit located in the module shell, the end of the module shell facing the light incident window is the front end of the infrared detection module, and the end of the module shell away from the front end is the rear end of the infrared detection module.

[0029] In some embodiments, a second temperature detection unit is disposed in the module housing, and the second temperature detection unit is used to detect the ambient temperature of the thermoelectric sensing unit.

[0030] In some embodiments, at least a portion of the probe housing is made of metal material, and the first heating element and / or the second heating element is in contact with the metal material portion of the probe housing to heat the metal material portion.

[0031] In some embodiments, the probe housing includes a probe cap and a cylindrical body, the probe cap is fixedly connected to the cylindrical body and encloses the installation cavity, the light incident window is provided on the probe cap, and at least the probe cap is made of metal material.

[0032] In some embodiments, when measuring the temperature, the control unit controls the first heating element and the second heating element to keep heating so as to ensure that the infrared detection module is in a constant temperature environment.

[0033] The present application also provides an ear temperature detection device to improve the accuracy of temperature detection.

[0034] Based on the above objectives, some embodiments of the present application provide an ear temperature detection device, including:

[0035] A probe housing, wherein the probe housing has a detection end, the detection end has a light incident window, and the probe housing encloses a mounting cavity;

[0036] An infrared detection module, the infrared detection module is installed in the installation cavity, and the infrared detection module is arranged toward the light incident window so that infrared rays emitted by the detection object can enter the infrared detection module from the light incident window;

[0037] A heating element, wherein the heating element is used to heat the infrared detection module;

[0038] a control unit, which is electrically connected to the heating element and is used to control the heating element;

[0039] and a heat-insulating layer, wherein the heat-insulating layer is arranged around the circumference of the infrared detection module and separates the infrared detection module from the probe housing.

[0040] In the ear temperature detection device shown above, it includes a heating element and a thermal insulation layer. The heating element can heat the infrared detection module. At the same time, the thermal insulation layer is arranged circumferentially around the infrared detection module and separates the infrared detection module from the probe housing. On the one hand, it can reduce the temperature generated by the heating element from being dissipated to the probe housing, thereby improving the heating efficiency of the heating element for the infrared detection module. On the other hand, it can also ensure that the temperature generated by the heating element is better conducted in the infrared detection module itself, thereby making the temperature of the infrared detection module itself more uniform, and making the overall temperature of the infrared detection module more uniform in the direction of incidence of infrared rays, thereby reducing or eliminating the problem of temperature gradient of the infrared detection module itself, thereby improving the measurement accuracy of the infrared detection module.

[0041] In some embodiments, the heating element includes a first heating element and a second heating element, the infrared detection module has a front end facing the light incident window and a rear end away from the front end, and the front end is arranged toward the light incident window; in the axial direction of the light incident window, the first heating element is located on the front side of the front end for heating the front end, and / or the second heating element is located on the rear side of the rear end for heating the rear end; the control unit is electrically connected to the first heating element and the second heating element, and is used to control the first heating element and the second heating element so that the temperatures of the front end and the rear end of the infrared detection module are consistent or differ by a set value.

[0042] In some embodiments, the first heating element is a first plate-shaped structure, the second heating element is a second plate-shaped structure, the first heating element, the infrared detection module and the second heating element form a stacked structure, the second disc-shaped structure has a wiring hole, and the connecting wire of the infrared detection module passes through the wiring hole.

[0043] In some embodiments, in the axial direction of the light incident window, the distance between the first heating element and the infrared detection module is less than or equal to 1 mm.

[0044] In some embodiments, the first heating element has a second through hole, wherein:

[0045] The hole wall of the light incident window is folded toward the side where the infrared detection module is located, and inserted into the second through hole to form an optical tunnel to guide the infrared ray along the optical tunnel toward the infrared detection module;

[0046] Or, the second through hole is in communication with the light incident window, and together they enclose at least a portion of an optical tunnel, so as to guide the infrared ray along the optical tunnel toward the infrared detection module;

[0047] Or, it further includes an optical guide, wherein the optical guide has an optical tunnel for guiding the infrared rays to be emitted toward the infrared detection module, and the optical guide is installed in the light incident window and the second through hole.

[0048] In some embodiments, the control unit has a first flexible circuit board, one end of the first flexible circuit board is located between the first heating element and the infrared detection module, and the first heating element is electrically connected to the first flexible circuit board; the other end of the first flexible circuit board extends along the side of the infrared detection module to the rear side of the infrared detection module.

[0049] In some embodiments, the control unit includes a second flexible circuit board, one end of which is located on the rear side of the second heating element and is electrically connected to the second heating element; the other end of the second flexible circuit board extends rearward along the axial direction of the light incident window in a manner opposite to the first flexible circuit board; and a receiving cavity for installing other components is formed between the first flexible circuit board and the second flexible circuit board.

[0050] In some embodiments, a thermally conductive insulating layer is provided between the first heating element and the infrared detection module, and / or a thermally conductive insulating layer is provided between the infrared detection module and the second heating element.

[0051] In some embodiments, a heat-insulating layer is further included, which is disposed around the circumference of the infrared detection module and separates the infrared detection module from the probe housing.

[0052] In some embodiments, at least one first temperature detection unit is further included, wherein the first temperature detection unit is used to detect the temperature of the front end of the infrared detection module, the first temperature detection unit is electrically connected to the control unit, and the control unit adjusts the temperature of the first heating element based on the feedback result of the first temperature detection unit.

[0053] In some embodiments, at least one second temperature detection unit is further included, and the second temperature detection unit is used to detect the temperature of the rear end of the infrared detection module; the second temperature detection unit is electrically connected to the control unit, and the control unit adjusts the temperature of the second heating element based on the feedback result of the second temperature detection unit.

[0054] In some embodiments, the first temperature detection unit is at least partially attached to the front end of the infrared detection module, and / or the second temperature detection unit is at least partially attached to the rear end of the infrared detection module.

[0055] In some embodiments, the distance between the first temperature detection unit and the infrared detection module is less than or equal to 5 mm, and / or the distance between the second temperature detection unit and the infrared detection module is less than or equal to 5 mm.

[0056] In some embodiments, the infrared detection module has a module shell made of metal material and a thermoelectric sensing unit located in the module shell, the end of the module shell facing the light incident window is the front end of the infrared detection module, and the end of the module shell away from the front end is the rear end of the infrared detection module.

[0057] In some embodiments, a second temperature detection unit is disposed in the module housing, and the second temperature detection unit is used to detect the ambient temperature of the thermoelectric sensing unit.

[0058] In some embodiments, at least a portion of the probe housing is made of metal material, and the first heating element and / or the second heating element is in contact with the metal material portion of the probe housing to heat the metal material portion.

[0059] In some embodiments, the probe housing includes a probe cap and a cylindrical body, the probe cap is fixedly connected to the cylindrical body and encloses the installation cavity, the light incident window is provided on the probe cap, and at least the probe cap is made of metal material.

[0060] In some embodiments, when measuring the temperature, the control unit controls the first heating element and the second heating element to keep heating so as to ensure that the infrared detection module is in a constant temperature environment.

[0061] The present application also provides an ear temperature detection device to improve the accuracy of temperature detection.

[0062] Based on the above objectives, some embodiments of the present application provide an ear temperature detection device, including:

[0063] A probe housing, wherein the probe housing encloses a mounting cavity;

[0064] An infrared detection module, the infrared detection module is installed in the installation cavity;

[0065] A heating element, wherein at least a portion of the probe housing is made of metal material, and the heating element is in thermal contact with the metal material portion of the probe housing to heat the metal material portion;

[0066] and a control unit, wherein the control unit is used to control the heating element to perform heating.

[0067] In the ear temperature detection device shown above, it includes a heating element. At the same time, at least a portion of the probe shell is made of metal material. The heating element is in thermal contact with the metal material portion of the probe shell to heat the metal material portion, thereby increasing the temperature of the probe shell, and then increasing the temperature of the entire probe portion, reducing the problem of the detection result being affected by the ambient temperature being too low, and improving the measurement accuracy of the infrared detection module.

[0068] In some embodiments, the heating element includes a first heating element and a second heating element, the infrared detection module has a front end facing the light incident window and a rear end away from the front end, and the front end is arranged toward the light incident window; in the axial direction of the light incident window, the first heating element is located on the front side of the front end for heating the front end, and / or the second heating element is located on the rear side of the rear end for heating the rear end; the control unit is electrically connected to the first heating element and the second heating element, and is used to control the first heating element and the second heating element so that the temperatures of the front end and the rear end of the infrared detection module are consistent or differ by a set value.

[0069] In some embodiments, the first heating element is a first plate-shaped structure, the second heating element is a second plate-shaped structure, the first heating element, the infrared detection module and the second heating element form a stacked structure, the second disc-shaped structure has a wiring hole, and the connecting wire of the infrared detection module passes through the wiring hole.

[0070] In some embodiments, in the axial direction of the light incident window, the distance between the first heating element and the infrared detection module is less than or equal to 1 mm.

[0071] In some embodiments, the first heating element has a second through hole, wherein:

[0072] The hole wall of the light incident window is folded toward the side where the infrared detection module is located, and inserted into the second through hole to form an optical tunnel to guide the infrared ray along the optical tunnel toward the infrared detection module;

[0073] Or, the second through hole is in communication with the light incident window, and together they enclose at least a portion of an optical tunnel, so as to guide the infrared ray along the optical tunnel toward the infrared detection module;

[0074] Or, it further includes an optical guide, wherein the optical guide has an optical tunnel for guiding the infrared rays to be emitted toward the infrared detection module, and the optical guide is installed in the light incident window and the second through hole.

[0075] In some embodiments, the control unit has a first flexible circuit board, one end of the first flexible circuit board is located between the first heating element and the infrared detection module, and the first heating element is electrically connected to the first flexible circuit board; the other end of the first flexible circuit board extends along the side of the infrared detection module to the rear side of the infrared detection module.

[0076] In some embodiments, the control unit includes a second flexible circuit board, one end of which is located on the rear side of the second heating element and is electrically connected to the second heating element; the other end of the second flexible circuit board extends rearward along the axial direction of the light incident window in a manner opposite to the first flexible circuit board; and a receiving cavity for installing other components is formed between the first flexible circuit board and the second flexible circuit board.

[0077] In some embodiments, a thermally conductive insulating layer is provided between the first heating element and the infrared detection module, and / or a thermally conductive insulating layer is provided between the infrared detection module and the second heating element.

[0078] In some embodiments, a heat-insulating layer is further included, which is disposed around the circumference of the infrared detection module and separates the infrared detection module from the probe housing.

[0079] In some embodiments, at least one first temperature detection unit is further included, wherein the first temperature detection unit is used to detect the temperature of the front end of the infrared detection module, the first temperature detection unit is electrically connected to the control unit, and the control unit adjusts the temperature of the first heating element based on the feedback result of the first temperature detection unit.

[0080] In some embodiments, at least one second temperature detection unit is further included, and the second temperature detection unit is used to detect the temperature of the rear end of the infrared detection module; the second temperature detection unit is electrically connected to the control unit, and the control unit adjusts the temperature of the second heating element based on the feedback result of the second temperature detection unit.

[0081] In some embodiments, the first temperature detection unit is at least partially attached to the front end of the infrared detection module, and / or the second temperature detection unit is at least partially attached to the rear end of the infrared detection module.

[0082] In some embodiments, the distance between the first temperature detection unit and the infrared detection module is less than or equal to 5 mm, and / or the distance between the second temperature detection unit and the infrared detection module is less than or equal to 5 mm.

[0083] In some embodiments, the infrared detection module has a module shell made of metal material and a thermoelectric sensing unit located in the module shell, the end of the module shell facing the light incident window is the front end of the infrared detection module, and the end of the module shell away from the front end is the rear end of the infrared detection module.

[0084] In some embodiments, a second temperature detection unit is disposed in the module housing, and the second temperature detection unit is used to detect the ambient temperature of the thermoelectric sensing unit.

[0085] In some embodiments, at least a portion of the probe housing is made of metal material, and the first heating element and / or the second heating element is in contact with the metal material portion of the probe housing to heat the metal material portion.

[0086] In some embodiments, the probe housing includes a probe cap and a cylindrical body, the probe cap is fixedly connected to the cylindrical body and encloses the installation cavity, the light incident window is provided on the probe cap, and at least the probe cap is made of metal material.

[0087] In some embodiments, when measuring the temperature, the control unit controls the first heating element and the second heating element to keep heating so as to ensure that the infrared detection module is in a constant temperature environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0088] Figure 1 This is a schematic diagram of the appearance structure of an ear temperature detection device in some embodiments of the present application;

[0089] Figure 2 A cross-sectional view of a probe portion in some embodiments of the present application;

[0090] Figure 3 This is a schematic diagram of the exploded internal components of the probe in some embodiments of the present application;

[0091] Figure 4 It is a cross-sectional view of the probe part in some other embodiments of the present application. DETAILED DESCRIPTION

[0092] The present invention is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are for making the present application better understood. However, those skilled in the art can easily recognize that some features can be omitted in different situations, or can be replaced by other elements, materials, methods. In some cases, some operations related to the present application are not shown or described in the specification, this is to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations according to the description in the specification and the general technical knowledge in the art.

[0093] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0094] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0095] In order to solve the problem of inaccurate measurement of existing ear temperature detection devices, especially inaccurate measurement in cold environments, some embodiments of the present application provide an ear temperature detection device, which is set by a heating element different from the prior art to improve the measurement accuracy of the ear temperature detection device. The ear temperature detection device can be, but is not limited to, an ear temperature gun or other device that obtains the body temperature of a detection object by measuring ear temperature. The detection object can be a human or an animal.

[0096] Please refer to Figure 1 In some embodiments, the ear temperature detection device includes a probe 1 and a holding portion 2 for inserting into or approaching the ear canal of the detection object. Figure 1 In the embodiment shown, the holding portion 2 is a long strip structure that is convenient for the user to hold, and the user can hold the ear temperature detection device with one hand. Of course, in other embodiments, the holding portion 2 can also be set as other non-long strip structures, such as a square, round or other shape designed to be convenient for the user to hold with the thumb and index finger, and it is not necessary to be set as Figure 1Even in some embodiments, in order to make the ear temperature detection device more compact, the ear temperature detection device can also omit the holding portion 2, and the user can directly hold the probe 1 to measure the temperature. In this embodiment, it mainly improves the structure inside the probe 1, and other structures are not limited.

[0097] For further information, please refer to Figure 2 and 3 In some embodiments, the probe 1 includes a probe housing 100, an infrared detection module 200, a first heating element 300, a second heating element 400, and a control unit (such as 610, 620). Of course, according to different requirements, the probe 1 may also have other components, which can be referred to the prior art and will not be repeated here.

[0098] The probe housing 100 has a detection end 101. The detection end 101 is the end of the probe housing 100 facing the detection object when the ear temperature is detected, and the detection end 101 is the position where the infrared rays emitted by the detection object enter the probe 1.

[0099] In order to allow the infrared rays emitted by the detection object to enter the probe 1, the detection end 101 has a light incident window 102. The light incident window 102 is a structure that allows the infrared rays to enter. It can be a closed but light-transmitting layer, or it can be an opening, for example. Figure 2 In the illustrated embodiment, the light incident window 102 is an opening, which is referred to herein as a first through hole.

[0100] The probe housing 100 forms a mounting cavity, and the infrared detection module 200 is mounted in the mounting cavity. The infrared detection module 200 has a front end facing the light incident window 102 and a rear end facing away from the front end. Figure 2 The front end is arranged toward the light incident window 102 so that the infrared rays emitted by the detection object can enter the front end from the light incident window 102. The infrared detection module 200 is a type of component that can receive infrared rays and sense temperature, for example, it can adopt a conventional infrared sensor or other sensor components with a pyroelectric sensing unit.

[0101] The control unit is electrically connected to the first heating element 300 and the second heating element 400, and is used to control the first heating element 300 and the second heating element 400. The first heating element 300 is used to heat the front end of the infrared detection module 200, and the second heating element 400 is used to heat the rear end of the infrared detection module 200. Under the control of the control unit, by setting the heating at the front and rear ends of the infrared detection module 200, the heat of the infrared detection module 200 is conducted from the two ends to the middle, so that the overall temperature of the infrared detection module 200 is more uniform in the direction of the infrared ray incident (i.e., the front and rear direction of the infrared detection module 200), so that the temperature of the front and rear ends of the infrared detection module 200 is consistent or different by a set value, reducing or eliminating the problem of the temperature gradient of the infrared detection module 200 itself, thereby improving the measurement accuracy of the infrared detection module 200. The set value can be set according to specific needs, and it can be either a precise point value or an interval range.

[0102] Moreover, the heat emitted by the first heating element 300 and the second heating element 400 can also increase the temperature of the entire probe 1, thereby preventing the light incident window 102 of the probe 1 from fogging, reducing the temperature difference between the infrared detection module 200 and the detection object, and avoiding the probe 1 from lowering the flesh temperature of the detection object, thereby further improving the accuracy of the detection results of the ear temperature detection device.

[0103] In addition, in some embodiments, since the first heating element 300 and the second heating element 400 are separately provided, the control unit can also control the first heating element 300 and the second heating element 400 respectively, so that the heating temperature of the first heating element 300 and the heating temperature of the second heating element 400 can be the same or different as needed, and then by adjusting the heating temperatures of the first heating element 300 and the second heating element 400 respectively, the overall temperature of the infrared detection module 200 can be more accurately controlled, the temperature gradient of the infrared detection module 200 can be reduced, and the temperature of the front end and the rear end of the infrared detection module 200 can be more accurately made consistent or different from the set value. Of course, in some embodiments, in order to simplify the control difficulty, the control unit can also synchronously control the first heating element 300 and the second heating element 400, that is, the first heating element 300 and the second heating element 400 produce the same temperature change at the same time.

[0104] In some embodiments, when measuring temperature, the control unit controls the first heating element 300 and the second heating element 400 to keep heating to ensure that the infrared detection module 200 is in a constant temperature environment, so that the infrared detection module 200 can complete the detection in the constant temperature environment and improve the accuracy of the detection results.

[0105] In the above embodiments, the first heating element 300 and the second heating element 400 can adopt any heating element that can be applied to the field of ear temperature detection, for example, but not limited to, ceramic heating plates, iron-chromium-aluminum heating wires, nickel-chromium heating wires or other types of heating elements.

[0106] In order to ensure the compactness of the structure, in some embodiments, please refer to Figure 2 In the axial direction of the light incident window 102, the first heating element 300 is located at the front side of the front end of the infrared detection module 200, and / or the second heating element 400 is located at the rear side of the rear end of the infrared detection module 200. Wherein, when the light incident window 102 is a light-transmitting layer, the axial direction of the light incident window 102 is perpendicular to the light-transmitting layer. When the light incident window 102 is an opening, the axial direction of the light incident window 102 is the axial direction of the opening. This setting makes full use of the axial space of the light incident window 102, conforms to the narrow and long design of the probe 1, and avoids increasing the lateral size (i.e., radial or perpendicular to the axial direction) of the probe 1.

[0107] Please refer to Figure 2 and 3 In some more specific embodiments, the first heating element 300 is a first plate-like structure, the second heating element 400 is a second plate-like structure, and the first heating element 300, the infrared detection module 200 and the second heating element 400 form a stacked structure, similar to a sandwich structure. The plate-like heating element and the stacked structure between the three can increase the contact surface between the first heating element 300, the second heating element 400 and the infrared detection module 200, thereby being more conducive to heat conduction. In addition, in some other embodiments, when the first heating element 300 and the second heating element 400 are designed to clamp the infrared detection module 200, the first heating element 300 and the second heating element 400 can also play a role in fixing the infrared detection module 200 to improve the position stability of the infrared detection module 200.

[0108] In the above stacked structure, please refer to Figure 2 and 3 In some embodiments, the second heating element 400 has a wiring hole 410, and the connection wires of the infrared detection module 200 pass through the wiring hole 410. Based on this, the connection wires of the infrared detection module 200 do not need to be led out from the peripheral side of the second heating element 400, which can avoid increasing the lateral size of the probe 1. Of course, in other embodiments, the connection wires of the infrared detection module 200 can also be led out from the peripheral side of the second heating element 400, and this application is not limited to this.

[0109] In addition to the above-mentioned position distribution of the first heating element 300, the infrared detection module 200 and the second heating element 400, in other embodiments, the first heating element 300 and / or the second heating element 400 may also be at least partially arranged on the side of the infrared detection module 200, as long as the first heating element 300 and the second heating element 400 can heat the front end and the rear end of the infrared detection module 200 respectively.

[0110] Furthermore, in some embodiments, in order to ensure the heating effect of the heating element on the infrared detection module 200, the distance between the first heating element 300 and the infrared detection module 200 in the axial direction of the light incident window 102 is less than or equal to 1 mm. This setting can ensure that the heat of the first heating element 300 can be more easily conducted to the front end of the infrared detection module 200, and the heat of the second heating element 400 can be more easily conducted to the rear end of the infrared detection module 200. Moreover, this distance design also enables the first heating element 300 and the second heating element 400 to be close to the infrared inspection module, thereby improving the compactness of the internal structure of the entire probe 1. In particular, when the first heating element 300 is located at the front side of the front end and the second heating element 400 is located at the rear side of the rear end, it can not only ensure that the overall lateral size of the probe 1 is small, but also improve the heating effect of the heating element on the infrared detection module 200.

[0111] In terms of heat conduction, the heat conduction between the heating element and the infrared detection module 200 can be achieved by direct contact or indirect contact. For example, the first heating element 300 and / or the second heating element 400 can be in contact with the infrared detection module 200 for heat conduction; or, the first heating element 300 and / or the second heating element 400 can also be in contact with the infrared detection module 200 through other intermediate heat conducting materials for heat conduction.

[0112] In some embodiments, a heat-conducting insulating layer is provided between the first heating element 300 and the infrared detection module 200, and / or a heat-conducting insulating layer is provided between the infrared detection module 200 and the second heating element 400. In addition to achieving a heat-conducting effect, the heat-conducting insulating layer also has an insulating effect to avoid short circuit problems.

[0113] The thermally conductive insulating layer can be made of a material that is both thermally conductive and insulating. It can be a specially arranged thermally conductive insulating layer (such as the thermally conductive insulating layer 700 located between the second heating element 400 and the infrared detection module 200), or it can be a component that serves other functions and also serves as a thermally conductive insulating layer (such as the first flexible circuit board 610 described later).

[0114] Furthermore, the control unit is a component capable of outputting a control signal, which may be one or more circuit boards (such as a flexible circuit board or a PCB board). Regarding the control of the first heating element 300 and the second heating element 400, they may be directly connected to the same control circuit board, or different circuit boards may be set up to control them respectively.

[0115] For example, see Figure 2 and 3 In some embodiments, the control unit has a first flexible circuit board 610 , the first heating element 300 is electrically connected to the first flexible circuit board 610 , and the first flexible circuit board 610 controls the first heating element 300 .

[0116] Please continue to refer to Figure 2 and 3 In some embodiments, the control unit includes a second flexible circuit board 620 , and the second flexible circuit board 620 is electrically connected to the second heating element 400 , and the second flexible circuit board 620 controls the second heating element 400 .

[0117] Of course, the control unit for controlling the first heating element 300 and the second heating element 400 may not use a flexible circuit board, and may also be controlled by a PCB board.

[0118] In addition, in other embodiments, the first heating element 300 and the second heating element 400 may also be connected to the same circuit board via connecting wires, and the first heating element 300 and the second heating element 400 are controlled by the circuit board.

[0119] Please refer to Figure 2 and 3 In some embodiments, in order to improve the compactness of the structure, one end of the first flexible circuit board 610 is located between the first heating element 300 and the infrared detection module 200. At this time, the first flexible circuit board 610 can also serve as a heat-conducting insulating layer between the first heating element 300 and the infrared detection module 200, and no additional heat-conducting insulating layer is required, which can simplify the structure and reduce the volume of the structure. The other end of the first flexible circuit board 610 extends along the side of the infrared detection module 200 to the rear side of the infrared detection module 200 to facilitate the connection of the first flexible circuit board 610 with other components, such as the connection with the main control circuit board of the ear temperature detection device. The main control circuit board can usually be arranged in the holding part 2, and this application does not limit this.

[0120] For further information, please refer to Figure 2 and 3In some embodiments, one end of the second flexible circuit board 620 is located on the rear side of the second heating element 400, and the other end of the second flexible circuit board 620 extends rearward along the axial direction of the light incident window 102 to facilitate the connection of the first flexible circuit board 610 with other components, such as connection with the main control circuit board of the ear temperature detection device.

[0121] For further information, please refer to Figure 2 and 3 In some embodiments, the first flexible circuit board 610 and the second flexible circuit board 620 extend to the rear side in a relative manner, making full use of the peripheral space in the probe housing 100 to avoid mutual interference between the first flexible circuit board 610 and the second flexible circuit board 620, and facilitating the connection between the first flexible circuit board 610 and the second flexible circuit board 620 and other components. Moreover, in this arrangement, a receiving cavity A for installing other components can be formed between the first flexible circuit board 610 and the second flexible circuit board 620. When necessary, the receiving cavity A can be used to place other components, thereby improving the compactness of the entire probe 1 structure and facilitating the reduction of the overall size of the probe 1.

[0122] On the other hand, in order to improve the accuracy of the temperature control of the infrared detection module 200 by the control unit, in some embodiments, please refer to Figure 2 , and also includes at least one first temperature detection unit 810, which is used to detect the temperature of the front end of the infrared detection module 200. The first temperature detection unit 810 is electrically connected to the control unit, and the control unit adjusts the temperature of the first heating element 300 based on the feedback result of the first temperature detection unit 810, so as to more accurately adjust the heating temperature of the first heating element 300.

[0123] For further information, please refer to Figure 2 In some embodiments, at least one second temperature detection unit 820 is further included, and the second temperature detection unit 820 is used to detect the temperature of the rear end of the infrared detection module 200; the second temperature detection unit 820 is electrically connected to the control unit, and the control unit adjusts the temperature of the second heating element 400 based on the feedback result of the second temperature detection unit 820, so as to more accurately adjust the heating temperature of the second heating element 400. The first temperature detection unit 810 and the second temperature detection unit 820 can be arranged on the outside of the infrared detection module 200, or on the inside of the infrared detection module 200.

[0124] The first temperature detection unit 810 and the second temperature detection unit 820 may be any component that can be applied to the temperature detection of the infrared detection module 200, such as but not limited to an NTC temperature sensor or other types of temperature sensors. The first temperature detection unit 810 and the second temperature detection unit 820 may also be electrically connected to the same circuit board, such as a main control circuit board. Alternatively, the first temperature detection unit 810 and the second temperature detection unit 820 may also be connected to different circuit boards respectively.

[0125] In order to obtain more accurate temperature information, the first temperature detection unit 810 and the second temperature detection unit 820 can directly contact the infrared detection module 200. Figure 2 In some embodiments, the first temperature detection unit 810 is at least partially attached to the front end of the infrared detection module 200 , and / or the second temperature detection unit 820 is at least partially attached to the rear end of the infrared detection module 200 .

[0126] In some more specific embodiments, the first temperature detection unit 810 is at least partially in contact with the outer wall or inner wall of the front end of the infrared detection module 200 , and / or the second temperature detection unit 820 is at least partially in contact with the outer wall or inner wall of the rear end of the infrared detection module 200 .

[0127] exist Figure 2 In the illustrated embodiment, the first temperature detection unit 810 is attached to the outer wall of the front end of the infrared detection module 200, and the second temperature detection unit 820 is attached to the inner wall of the rear end of the infrared detection module 200. In this embodiment, the second temperature detection unit 820 can be pre-assembled in the infrared detection module 200, such as directly purchasing the infrared detection module 200 with the second temperature detection unit 820, so as to reduce costs.

[0128] Furthermore, in order to improve the accuracy of temperature detection of the infrared detection module 200, in some embodiments, the distance between the first temperature detection unit 810 and the infrared detection module 200 is less than or equal to 5 mm, and / or the distance between the second temperature detection unit 820 and the infrared detection module 200 is less than or equal to 5 mm.

[0129] Furthermore, the infrared detection module 200 used in some embodiments of the present application is also described here. Figure 2In some embodiments, the infrared detection module 200 has a module housing 210 and a thermoelectric sensing unit 220 located in the module housing 210. The module housing 210 serves as the outer shell of the entire infrared detection module 200, and may be an integrally formed structure or may be composed of multiple parts. The end of the module housing 210 facing the light incident window 102 is the front end of the infrared detection module 200, and the end of the module housing 210 away from the front end is the rear end of the infrared detection module 200. The thermoelectric sensing unit 220 is used to receive infrared rays and obtain an electrical signal that can represent the corresponding temperature, and may use, for example, but not limited to, a thermopile sensor or other types of sensors.

[0130] In some embodiments, in order to enable the infrared detection module 200 to better conduct heat, in some embodiments, the module housing 210 is made of metal material, and the heat generated by the first heating element 300 and the second heating element 400 can be quickly conducted on the module housing 210, thereby making the temperature of the entire infrared detection module 200 more uniform to reduce the temperature gradient.

[0131] Please refer to Figure 2 In this embodiment, a second temperature detection unit 820 is further provided in the module housing 210, and the second temperature detection unit 820 is used to detect the ambient temperature of the thermoelectric sensing unit 220. The second temperature detection unit 820 and the thermoelectric sensing unit 220 are both provided on the inner wall of the rear end of the module housing 210. In addition, the second temperature detection unit 820 can also be provided on the side wall of the module housing 210.

[0132] On the other hand, in order to better guide the infrared rays to propagate toward the infrared detection module 200 , an optical tunnel may be further provided in some embodiments, and the infrared light incident into the light incident window 102 may enter the infrared detection module 200 along the optical tunnel.

[0133] Please refer to Figure 2 and 3 In some embodiments, the light incident window 102 is a first through hole, and the first heating element 300 has a second through hole 310, wherein the hole wall 103 of the light incident window 102 is folded toward the side where the infrared detection module 200 is located, and inserted into the second through hole 310, and an optical tunnel is formed to guide infrared rays along the optical tunnel toward the infrared detection module 200. In this embodiment, the optical tunnel is directly formed by the probe housing 100, and there is no need to set up an optical guide for forming the optical tunnel, which can simplify the internal structure of the probe 1 and is conducive to the miniaturization design of the probe 1.

[0134] In addition, the folded hole wall 103 of the light incident window 102 passes through the second through hole 310 of the first heating element 300, which can also limit the first heating element 300, reducing the fixing requirements for the first heating element 300. At the same time, through the folded hole wall 103, the contact area between the first heating element 300 and the probe housing 100 is increased, which is also conducive to the heat generated by the first heating element 300 to the probe housing 100 Transfer, thereby increasing the temperature of the probe housing 100.

[0135] In some embodiments, the detection end 101 can be made of metal material, which not only can achieve a heat conduction effect, but also because the infrared emissivity of metal is very low, only within 10%, in the process of forming an optical tunnel by the folded hole wall 103 of the light incident window 102, it can reduce the interference caused by the infrared light radiated by the temperature generated by the folded hole wall 103 itself heating and entering the infrared detection module 200.

[0136] Of course, in some other embodiments, the second through hole 310 may be in communication with the light incident window 102, and together they may enclose at least a portion of an optical tunnel to guide infrared rays along the optical tunnel toward the infrared detection module 200. Alternatively, in some other embodiments, an optical guide may be included, the optical guide having an optical tunnel for guiding infrared rays toward the infrared detection module 200, and the optical guide may be installed in the light incident window 102 and the second through hole 310.

[0137] In order to ensure that the heat generated by the heating element can be more fully and quickly transmitted to the entire infrared detection module 200, some embodiments of the present application also provide other solutions. Figure 3 In some embodiments, a heat preservation layer 500 is further included, which is arranged around the circumference of the infrared detection module 200 and separates the infrared detection module 200 from the probe housing 100. The heat preservation layer 500 can be made of any heat preservation material that can be used for the infrared detection module 200, such as heat preservation cotton or other materials.

[0138] When the infrared detection module 200 is covered by the thermal insulation layer 500, on the one hand, the outward dissipation of heat from the infrared detection module 200 can be reduced, especially preventing the heat from being dissipated to the probe housing 100, so that more heat is concentrated on the infrared detection module 200, thereby improving the heating efficiency of the heating element for the infrared detection module 200; on the other hand, it can also ensure that the temperature generated by the heating element is better conducted in the infrared detection module 200 itself, thereby making the temperature of the infrared detection module 200 itself more uniform, so that in the direction of incidence of infrared rays, the overall temperature of the infrared detection module 200 is more uniform, reducing or eliminating the problem of temperature gradient of the infrared detection module 200 itself, thereby improving the measurement accuracy of the infrared detection module 200.

[0139] In the above embodiments, the first heating element 300 and the second heating element 400 heat the front end and the rear end of the infrared detection module 200 respectively. At this time, the heat insulation effect of the thermal insulation layer 500 allows the heat to be quickly transferred from the front end and the rear end to the middle of the infrared detection module 200, thereby quickly completing the purpose of heating the entire infrared detection module 200 and achieving uniform temperature.

[0140] Of course, in other embodiments, after the thermal insulation layer 500 is used, the heating effect of one or more heating elements on the infrared detection module 200, plus the heat insulation function of the thermal insulation layer 500, can be relied upon, so that the heat of the heating element can be more concentratedly conducted to the infrared detection module 200. At this time, the heating element is controlled by the control unit to heat the infrared detection module 200. However, the position of the heating element can be set at the front end, rear end and / or side of the infrared detection module 200. For example, the heating element can adopt the layout and structure of the first heating element 300 and / or the second heating element 400 mentioned above, or it can not adopt the layout and structure of the first heating element 300 and / or the second heating element 400 mentioned above.

[0141] On the other hand, regarding the probe housing 100, the probe housing 100 can be an integrally formed structure, for example, formed by 3D printing, or can be composed of two or more parts. In the scheme of being formed by assembling, each sub-component can be fixedly connected or movably connected, and the movable connection can be, for example, a part of it (such as the probe cap 110 described later) can rotate relative to another part (such as the cylindrical body 120 described later) or move along the axial direction of the probe 1 to meet certain functional requirements. In the fixed connection scheme, each sub-component can be non-detachably fixedly connected (such as ultrasonic welding, bonding or other methods) or detachably connected (such as screwing, clamping or other methods).

[0142] exist Figure 2 In the illustrated embodiment, the probe housing 100 includes a probe cap 110 and a cylindrical body 120. The probe cap 110 is fixedly connected to the cylindrical body 120 and encloses a mounting cavity, and a light incident window 102 is provided on the probe cap 110. In the illustrated embodiment, the fixed connection is a detachable fixed connection, so that the probe cap 110 can be easily opened to replace internal components. Of course, in other embodiments, the probe cap 110 and the cylindrical body 120 can also be a non-detachable fixed connection.

[0143] Usually, the probe housing 100 is made of a non-heat-conducting material, which easily causes a temperature difference between the probe housing 100 and the ambient temperature, thereby causing problems such as fogging and cooling effect, affecting the measurement accuracy.

[0144] In this regard, in some embodiments of the present application, at least a portion of the probe housing 100 is made of metal material, and the ear temperature detection device has at least one heating element, which can be the first heating element 300 and / or the second heating element 400 mentioned above, or other heating elements. At least one heating element is in thermal contact with the metal material portion of the probe housing 100 to heat the metal material portion, increase the temperature of the probe housing 100, reduce the problem of the detection result being affected by the low ambient temperature, and improve the measurement accuracy of the infrared detection module 200.

[0145] Further, in some embodiments, please refer to Figure 2 At least the probe cap 110 is made of metal material, and the light incident window 102 is arranged on the probe cap 110 .

[0146] Furthermore, in some embodiments, the heating element is in thermal contact with the infrared detection module 200, so that the heating element can heat the probe housing 100 and the infrared detection module 200 at the same time. Figure 2 The first heating element 300 shown can heat both the probe housing 100 and the infrared detection module 200 .

[0147] The above specific examples are used to illustrate the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the art, according to the concept of the present invention, some simple deductions, modifications or substitutions can be made.

Claims

1. An ear temperature detection device, characterized in that: include: A probe housing, wherein the probe housing has a detection end, the detection end has a light incident window, and the probe housing encloses a mounting cavity; an infrared detection module, the infrared detection module being installed in the installation cavity, and the infrared detection module having a front end facing the light incident window and a rear end away from the front end, the front end being arranged toward the light incident window so that infrared rays emitted by a detection object can be incident on the front end from the light incident window; a first heating element, the first heating element being used to heat the front end; a second heating element, the second heating element being used to heat the rear end; and a control unit, which is electrically connected to the first heating element and the second heating element and is used to control the first heating element and the second heating element so that the temperatures of the front end and the rear end of the infrared detection module are consistent or differ by a set value.

2. The ear temperature detection device according to claim 1, characterized in that: In the axial direction of the light incident window, the first heating element is located at the front side of the front end, and / or the second heating element is located at the rear side of the rear end.

3. The ear temperature detection device according to any one of claims 1 to 2, characterized in that: The light incident window is a first through hole, and the first heating element has a second through hole, wherein: The hole wall of the first through hole is folded toward the side where the infrared detection module is located, and inserted into the second through hole to form an optical tunnel to guide the infrared ray along the optical tunnel toward the infrared detection module; Or, the second through hole is in communication with the first through hole, and together they enclose at least a portion of an optical tunnel, so as to guide the infrared ray along the optical tunnel toward the infrared detection module; Or, it further includes an optical guide, wherein the optical guide has an optical tunnel for guiding the infrared ray to be emitted toward the infrared detection module, and the optical guide is installed in the first through hole and the second through hole.

4. The ear temperature detection device according to any one of claims 1 to 3, characterized in that: The control unit independently controls the first heating member and the second heating member, respectively, so that a heating temperature of the first heating member and a heating temperature of the second heating member can be different.

5. The ear temperature detection device according to any one of claims 1 to 4, characterized in that: A heat-conducting insulating layer is provided between the first heating element and the infrared detection module, and / or a heat-conducting insulating layer is provided between the infrared detection module and the second heating element.

6. The ear temperature detection device according to any one of claims 1 to 5, characterized in that: It also includes a heat-insulating layer, which is arranged around the circumference of the infrared detection module and separates the infrared detection module from the probe housing.

7. The ear temperature detection device according to any one of claims 1 to 6, characterized in that: It also includes at least one first temperature detection unit and at least one second temperature detection unit, the first temperature detection unit is used to detect the temperature of the front end of the infrared detection module, the first temperature detection unit is electrically connected to the control unit, and the control unit adjusts the temperature of the first heating element based on the feedback result of the first temperature detection unit; and / or the second temperature detection unit is used to detect the temperature of the rear end of the infrared detection module; the second temperature detection unit is electrically connected to the control unit, and the control unit adjusts the temperature of the second heating element based on the feedback result of the second temperature detection unit.

8. The ear temperature detection device according to claim 7, characterized in that: The distance between the first temperature detection unit and the infrared detection module is less than or equal to 5 mm, and / or the distance between the second temperature detection unit and the infrared detection module is less than or equal to 5 mm or is located inside the infrared detection module.

9. The ear temperature detection device according to any one of claims 1 to 8, characterized in that: At least a portion of the probe housing is made of metal material, and the first heating element and / or the second heating element is in contact with the metal material portion of the probe housing to heat the metal material portion.

10. The ear temperature detection device according to any one of claims 1 to 9, characterized in that: While measuring the temperature, the control unit controls the first heating element and the second heating element to keep generating heat.

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