WO2024065834A1

WO2024065834A1 - Temperature measurement device

Info

Publication number: WO2024065834A1
Application number: PCT/CN2022/123624
Authority: WO
Inventors: 黄华; 赵将军; 刘宝文
Original assignee: 深圳市虎一科技有限公司
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2024-04-04

Abstract

A temperature measurement device (1), a measurement assembly (100) of the temperature measurement device (1) having a first magnetic body (111) and a second magnetic body (112) with opposite magnetic pole directions. The measurement assembly (100) is rotatably connected to a device body (200), and the first magnetic body (111) and the second magnetic body (112) are arranged around a rotation axis of the measurement assembly (100). During movement of the first magnetic body (111) and the second magnetic body (112), a magnetic field direction detection unit (202) of the device body (200) sends a first signal and a second signal on the basis of a detection result of magnetic field signals of the first magnetic body (111) and the second magnetic body (112), and controls the temperature measurement device (1) to switch on or off. When sending the first signal and the second signal, the magnetic field direction detection unit (202) incorporates detection of magnetic field directions of the first magnetic body (111) and the second magnetic body (112), thereby reducing the situation of false triggering. The first magnetic body (111) and the second magnetic body (112) are arranged around the rotation axis, which enlarges the areas and the overall volumes of the magnetic bodies in a radial plane, thereby resulting in a greater overall outward magnetic attraction force of the temperature measurement device (1), and allowing the temperature measurement device (1) to be magnetically attached to other articles.

Description

Temperature detection device

Technical Field

The invention relates to a temperature detection device, in particular to a switch structure of the temperature detection device.

Background technique

With the advancement of technology and the improvement of people's requirements for the taste and nutrition of food, people expect to more accurately control the temperature elements in the cooking process. In some embodiments, they expect to more accurately control the temperature of the food and the temperature of the water used to heat the food. Therefore, a temperature detection device used in food cooking came into being.

In order to more conveniently turn the device on and off, some solutions of these temperature detection devices usually set a small magnet on one side of the rotating base, and set a Hall sensor near the movement track of the magnet. The Hall sensor is used to detect the magnetic induction intensity of the magnet. The rotating base drives the magnet to move and change the magnetic induction intensity, which triggers the Hall sensor, and the Hall sensor sends the power-on signal and the power-off signal to the control circuit board. However, this structure still has disadvantages and can be further optimized.

technical problem

The invention is used to provide a temperature detection device, which is used to demonstrate a new structure for controlling the on/off of the temperature detection device through a magnetic body.

Technical Solutions

Based on the above purpose, an embodiment of the present application provides a temperature detection device, including:

A detection component, wherein the detection component comprises a temperature detection unit for temperature detection and a magnetic body, wherein the magnetic body is at least divided into a first magnetic body and a second magnetic body, and the magnetic poles of the first magnetic body and the second magnetic body are in opposite directions;

and a device body, the device body having a control unit and a magnetic field direction detection unit, the magnetic field direction detection unit being connected to the control unit by signal, and the temperature detection unit being connected to the control unit by signal;

The detection assembly is rotatably connected to the device body, and the first magnetic body and the second magnetic body are arranged around the rotation axis of the detection assembly;

The magnetic field direction detection unit is arranged at one side of the motion track of the magnetic body, and is used to detect the magnetic field signals of the first magnetic body and the second magnetic body, and the magnetic field signals at least include the magnetic field direction; during the motion of the first magnetic body and the second magnetic body, the magnetic field direction detection unit sends out a first signal and a second signal based on the detection results of the magnetic field signals of the first magnetic body and the second magnetic body;

The control unit controls the temperature detection device to turn on according to one of the first signal and the second signal, and controls the temperature detection device to turn off according to the other one.

Based on the above purpose, an embodiment of the present application provides a temperature detection device, characterized in that it includes:

A detection component, the detection component comprising a temperature detection unit for temperature detection, a first detection area and a second detection area, at least one of the first detection area and the second detection area is provided with a magnetic body, so that the magnetic field directions of the first detection area and the second detection area are different or the magnetic field existence states are different;

The detection assembly is movably connected to the device body; the magnetic field direction detection unit is arranged on one side of the motion trajectory of the first detection area and the second detection area, so as to detect the magnetic field signal of the first detection area and/or the second detection area, and the magnetic field signal at least includes the magnetic field direction;

During the movement of the first detection area and the second detection area, the magnetic field direction detection unit sends out a first signal and a second signal based on the detection results of the first detection area and the second detection area, and the control unit controls the temperature detection device to turn on according to one of the first signal and the second signal, and controls the temperature detection device to turn off according to the other.

A detection component, wherein the detection component has a temperature detection unit for temperature detection;

and a device body, the device body comprising a control unit and a magnetic field strength detection unit, the magnetic field strength detection unit being connected to the control unit by signal, and the temperature detection unit being connected to the control unit by signal;

The detection assembly is rotatably connected to the device body, and the detection assembly has a first detection area and a second detection area distributed around the rotation axis of the detection assembly, and one of the first detection area and the second detection area is provided with the third magnetic body, so that the magnetic induction intensity or magnetic field existence state of the first detection area and the second detection area is different; the magnetic induction intensity detection unit is arranged on one side of the motion track of the third magnetic body, so as to detect the magnetic field signal second detection area of the first detection area and the second detection area;

When the magnetic field strength detection unit detects that the magnetic field strength of the third magnetic body meets a first set range, a first signal is issued;

When the magnetic field strength detection unit detects that the magnetic field strength of the third magnetic body meets a second setting range, a second signal is issued, and the second setting range is smaller than the first setting range;

According to the temperature detection device of some embodiments described above, the detection component thereof has a magnetic body, and the magnetic body is at least divided into a first magnetic body and a second magnetic body with opposite magnetic pole directions. The detection component is rotatably connected to the device body, and the first magnetic body and the second magnetic body are arranged around the rotation axis of the detection component. During the movement of the first magnetic body and the second magnetic body, the magnetic field direction detection unit of the device body sends out a first signal and a second signal based on the detection results of the magnetic field signals of the first magnetic body and the second magnetic body, and the control unit controls the temperature detection device to start and shut down according to the first signal and the second signal. Wherein, when sending the first signal and the second signal, the magnetic field direction detection unit adds the detection of the magnetic field direction of the first magnetic body and the second magnetic body, which reduces the situation of false triggering and makes the device more reliable. Moreover, the device at least has the first magnetic body and the second magnetic body at the same time, and the first magnetic body and the second magnetic body are arranged around the rotation axis, which expands the area and overall volume of the magnetic body in the radial plane, so that the overall outward magnetic attraction of the device is greater, and the device can be magnetically adsorbed on other objects, making the temperature detection device easier to store and use.

According to the temperature detection device of some of the above embodiments, it includes a detection component having a first detection area and a second detection area, at least one of the first detection area and the second detection area is provided with a magnetic body, and the magnetic field directions of the first detection area and the second detection area are different or the magnetic field existence states are different. The detection component is movably connected (not limited to rotational connection) to the device body. The magnetic field direction detection unit is arranged on one side of the movement trajectory of the first detection area and the second detection area, and sends out a first signal and a second signal based on the detection results of the first detection area and the second detection area, and the control unit controls the temperature detection device to turn on and off according to the first signal and the second signal. Among them, when the magnetic field direction detection unit sends out the first signal and the second signal, it adds the detection of the magnetic field direction of the first magnetic body and the second magnetic body, which reduces the situation of false triggering and makes the device's power on and off more reliable.

Beneficial Effects

According to the temperature detection device of some embodiments described above, its detection component has a magnetic body. The detection component is rotatably connected to the device body, and the magnetic body has a first detection area and a second detection area, and the second detection area has no magnetic field or its magnetic induction intensity is less than the first detection area. When the magnetic induction intensity detection unit detects that the magnetic induction intensity of the magnetic body meets the first set range, a first signal is issued; when the magnetic induction intensity detection unit detects that the magnetic induction intensity of the magnetic body meets the second set range, a second signal is issued, and the control unit controls the power on and off according to the first signal and the second signal. In this embodiment, the first detection area and the second detection area are distributed around the rotation axis, so when the magnetic body rotates, the first detection area and the second detection area can be detected by the magnetic induction intensity detection unit in a longer range, the detection area is larger, and it is easier to be detected by the magnetic induction intensity detection unit, thereby increasing the reliability of the power on and off. Moreover, the magnetic body is arranged around the rotation axis, which expands the area and overall volume of the magnetic body in the radial plane, so that the overall outward magnetic attraction of the device is greater, and the device can be magnetically adsorbed on other objects, making the temperature detection device easier to store and use.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a temperature detection device when a detection assembly is in a closed position in one embodiment of the present application;

FIG2 is a schematic structural diagram of a temperature detection device when the detection assembly is in a fully opened position in one embodiment of the present application;

FIG3 is an exploded schematic diagram of a detection assembly and a device body in an embodiment of the present application;

FIG4 is an exploded view of a temperature detection device in one embodiment of the present application;

FIG5 is a schematic diagram of a magnetic body in a closed position according to an embodiment of the present application;

FIG6 is a schematic diagram of a magnetic body in an embodiment of the present application when it is located at the power-on position;

FIG7 is a schematic diagram of a magnetic body in a fully opened position according to an embodiment of the present application;

FIG8 is a schematic diagram of a magnetic body in an embodiment of the present application when the device is turned off;

9 and 10 are schematic diagrams of a magnetic body in a closed position according to an embodiment of the present application;

11 and 12 are schematic diagrams of the embodiment shown in FIG. 9 and FIG. 10 when the magnetic body is in a fully opened position;

13 and 14 are schematic diagrams of a magnetic body in a closed position in one embodiment of the present application;

15 and 16 are schematic diagrams of the embodiment shown in FIG. 13 and FIG. 14 when the magnetic body is in a fully opened position;

FIG17 is a schematic diagram of another embodiment of the present application when the magnetic body is in a closed position;

FIG18 is a schematic diagram of another embodiment of the present application when the magnetic body is located at the power-on position;

FIG19 is a schematic diagram of another embodiment of the present application when the magnetic body is in a fully opened position;

FIG20 is a schematic diagram of another embodiment of the present application in which the magnetic body is in a shutdown state;

21 and 22 are schematic diagrams of another embodiment of the present application when the magnetic body is in a closed position;

23 and 24 are schematic diagrams of the embodiment shown in FIGS. 21 and 22 when the magnetic body is in a fully opened position;

FIG. 25 is a schematic longitudinal cross-sectional view of the temperature detection device when the detection assembly is in a closed position in one embodiment of the present application.

Embodiments of the present invention

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.

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.

The serial numbers assigned to the components herein, 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).

In order to detect the temperature of food or food processing medium (such as water) during the cooking process, the present application provides a temperature detection device. For ease of use, the temperature detection device 1 can be a handheld structure, as shown in Figures 1 and 2. Of course, in other embodiments, the temperature detection device 1 can also be a desktop structure or other forms of structure.

Please refer to FIGS. 1-4 , in some embodiments, the temperature detection device 1 includes a detection component 100 and a device body 200 .

The detection assembly 100 is movably connected to the device body 200, and the user can change the position of the detection assembly 100 and the device body 200 to adapt to different application scenarios. In some embodiments, in the embodiments shown in Figures 1 and 2, the detection assembly 100 is rotatably connected to the device body 200, and the user can rotate the detection assembly 100, thereby changing its position relative to the device body 200, and the detection assembly 100 is stopped at any angle within the maximum opening angle range to facilitate different use requirements. Of course, in other embodiments, the detection assembly 100 can also be connected to the device body 200 in other movable ways. In some embodiments, the detection assembly 100 can also be translated relative to the device body 200, and the translation refers to movement in a certain plane, and its translation trajectory can be a straight line, a curve, a broken line or an irregular route, etc. The plane can be either a horizontal plane, a vertical plane, or other non-horizontal or vertical planes. In addition, the activity mode of the detection assembly 100 relative to the device body 200 can also be other forms other than rotation and translation.

The detection assembly 100 has a probe 121 and a temperature detection unit 123 for temperature detection. For example, the temperature detection unit 123 can be, but is not limited to, a thermocouple. The temperature detection unit 123 can also use other devices that can be used for temperature detection. The temperature detection unit 123 is arranged in the probe 121 or exposed from the probe 121.

Please refer to FIG4 , the device body 200 generally has a control unit 210, and the control unit 210 may be a circuit board with a control circuit, or may be other structures or circuits that can play a control role, or a combination of the two. The temperature detection unit 123 is connected to the control unit 210 by signal, and the signal detected by the temperature detection unit 123 is transmitted to the control unit 210, and the control unit 210 processes the signal to obtain a temperature detection result, thereby realizing temperature detection.

For ease of use, in some embodiments, the control unit 210 is triggered to turn on and off by moving the detection component 100 and changing the position of the magnetic body. The magnetic field signal of the magnetic body used to trigger the on and off function may be affected by other magnetic conductive materials or other magnetic bodies.

In order to improve the accuracy and reliability of the switch, please refer to Figures 5-16. In some embodiments of the present application, the detection component 100 also has a first detection area 101 and a second detection area 102. The first detection area 101, the second detection area 102 and the temperature detection unit 123 all move with the detection component 100. At least one of the first detection area 101 and the second detection area 102 is provided with a magnetic body, so that the first detection area 101 and the second detection area 102 form different magnetic field signals, and the magnetic field signal at least includes the magnetic field existence state and the magnetic field direction. In addition, the magnetic field signal can also include magnetic field related parameters such as magnetic induction intensity. In some embodiments, the magnetic field directions of the first detection area 101 and the second detection area 102 are different or the magnetic field existence states are different. The magnetic field existence state refers to whether there is a magnetic field. The magnetic field existence states of the first detection area 101 and the second detection area 102 are different, that is, one of the first detection area 101 and the second detection area 102 has a magnetic field, and the other does not have a magnetic field. In order to detect the magnetic field signals in the first detection area 101 and the second detection area 102, especially to detect the magnetic field direction in the magnetic field signal, the device body 200 has a magnetic field direction detection unit 202, and the magnetic field direction detection unit 202 is connected to the control unit 210 by signal to transmit the detected signal to the control unit 210. The first detection area 101 and the second detection area 102 refer to two different areas on the detection component 100. These two areas can be detected by the magnetic field direction detection unit 202 during the movement, and different trigger signals are formed for the magnetic field direction detection unit 202, and the magnetic field direction detection unit 202 is triggered to send different signals. The selection of the specific area range can be flexibly defined according to specific needs.

The magnetic field direction detection unit 202 is arranged on one side of the motion trajectory of the first detection area 101 and the second detection area 102 to detect the magnetic field signal of the first detection area 101 and/or the second detection area 102. The magnetic body 110 may be a magnet or other structure capable of generating magnetism. In some embodiments, the magnetic body 110 may be a permanent magnet (such as a permanent magnet), or the magnetic body 110 may be an electromagnet (such as a powered coil) or other structure capable of generating magnetism when powered on or in other specific states.

When the first detection area 101 and the second detection area 102 respectively move into the detection range of the magnetic field direction detection unit 202, different magnetic field signals will be fed back to the magnetic field direction detection unit 202. In some embodiments, the magnetic field existence state is different, the magnetic field direction is different and/or the magnetic induction intensity is different. The magnetic field direction detection unit 202 can identify these different magnetic field signals and send out the first signal and the second signal based on the detection results of the first detection area 101 and the second detection area 102.

In some embodiments, when the magnetic field direction detection unit 202 detects the magnetic field signal of the first detection area 101 and the magnetic induction intensity of the first detection area 101 satisfies the first set range, a first signal is issued; when the magnetic field direction detection unit 202 detects the magnetic field signal of the second detection area 102 and the magnetic induction intensity of the second detection area 102 satisfies the second set range, a second signal is issued.

The first signal and the second signal are signals that can represent different meanings. In some embodiments, one of the first signal and the second signal is a low level and the other is a high level. The control unit 210 controls the temperature detection device 1 to start up according to one of the first signal and the second signal, and controls the temperature detection device 1 to shut down according to the other signal. In some embodiments, the first signal is used to trigger the control unit 210 to control the temperature detection device 1 to start up, and the second signal is used to trigger the control unit 210 to control the temperature detection device 1 to shut down. In other embodiments, the first signal is used to trigger the control unit 210 to control the temperature detection device 1 to shut down, and the second signal is used to trigger the control unit 210 to control the temperature detection device 1 to start up. The specific control method can be flexibly defined according to the specific structure and requirements of the temperature detection device 1.

Among them, as the detection component 100 moves, when the magnetic body 110 triggers the magnetic field direction detection unit 202 to send a first signal or a second signal to control the power on, the detection component 100 is located in the power on position; correspondingly, when the magnetic body 110 triggers the magnetic field direction detection unit 202 to send a second signal or a first signal to control the power off, the detection component 100 is located in the power off position. Of course, when the detection component 100 is located in the power on position, each component in the detection component 100 (such as the magnetic body 110, the probe 121, etc.) is also defined as being located in the power on position. Similarly, when the detection component 100 is located in the power off position, each component in the detection component 100 (such as the magnetic body 110, the probe 121, etc.) is also defined as being located in the power off position. The various components in the detection component 100 can move synchronously or asynchronously. For example, when the magnetic body 110 and the probe 121 are both located in the power off position, the angle or distance moved by the magnetic body 110 and the probe 121 can be the same or different. Similarly, when the magnetic body 110 and the probe 121 are both in the on position or other identical positions (such as the closed position and the fully open position described below), the angles or distances moved by the magnetic body 110 and the probe 121 may be the same or different. When the angles or distances moved by the magnetic body 110 and the probe 121 are different, they may change in corresponding multiples or may change irregularly.

This method of combining the on/off of the device with the movement position of the detection component 100 simplifies the user's operating structure, and the user does not need to perform the on/off operation separately. The user can complete the on/off operation while turning on the detection component 100, which greatly improves the convenience of using the function. Moreover, the magnetic field direction detection unit 202 can at least detect the magnetic field direction of the magnetic body 110. In some embodiments, the magnetic field direction detection unit 202 can be but not limited to a tunnel magnetoresistance sensor (TMR). When the magnetic field direction detection unit 202 sends the first signal and the second signal, it adds the detection of the magnetic field direction of the first detection area 101 and the second detection area 102, which reduces the situation of false triggering and makes the on/off of the device more reliable. In some embodiments, even if other magnetic conductive materials or magnetic bodies 110 in other positions are detected by the magnetic field direction detection unit 202, the magnetic field direction detection unit 202 can also obtain a more accurate on/off signal by detecting the magnetic field direction.

Please refer to Figures 5-16. In some embodiments, the magnetic body 110 is divided into at least a first magnetic body 111 and a second magnetic body 112. In this embodiment, the space occupied by the first magnetic body 111 can be regarded as the first detection area 101, and the space occupied by the second magnetic body 112 can be regarded as the second detection area 102. The first magnetic body 111 and the second magnetic body 112 can be different areas of the same magnetic part. In some embodiments, two areas are divided on an integrally formed magnetic body 110 for magnetization in different directions, thereby forming the first magnetic body 111 and the second magnetic body 112 with different magnetic poles. Or, the first magnetic body 111 and the second magnetic body 112 are two independent magnetic parts, that is, the first magnetic body 111 and the second magnetic body 112 are two independently manufactured magnetic parts, such as two separate magnets.

The magnetic pole directions (i.e., directions of the N pole and the S pole) of the first magnetic body 111 and the second magnetic body 112 are different. In some embodiments, the magnetization directions of the first magnetic body 111 and the second magnetic body 112 are different, so that when the first magnetic body 111 and the second magnetic body 112 are installed in the detection assembly 100, their N pole and S pole directions are different, so that the magnetic field direction detection unit 202 can distinguish the first magnetic body 111 and the second magnetic body 112 according to the magnetic field direction.

Of course, in order to form a clear difference in the direction of the magnetic field, please refer to Figures 5-16. In some embodiments, the magnetic pole directions of the first magnetic body 111 and the second magnetic body 112 can be completely opposite, that is, the magnetization directions of the first magnetic body 111 and the second magnetic body 112 are opposite, and their N poles and S poles are just completely opposite. The magnetic field direction detection unit 202 can more accurately distinguish the first magnetic body 111 and the second magnetic body 112 according to the direction of the magnetic field.

Please refer to Figures 5-16. Although the first magnetic body 111 is located on the left side and the second magnetic body 112 is located on the right side in the illustrated embodiment, the upward end of the first magnetic body 111 is the N pole and the upward end of the second magnetic body 112 is the S pole. In other embodiments, the positions and magnetization directions of the first magnetic body 111 and the second magnetic body 112 may also be interchanged.

When the magnetic field directions of the first magnetic body 111 and the second magnetic body 112 are different, the magnetic field direction detection unit 202 sends a first signal when the magnetic field direction detection unit 202 detects the magnetic field signal of the first magnetic body 111 and the magnetic induction intensity detected by the first magnetic body 111 meets the first set range. The magnetic field direction detection unit 202 sends a second signal when the magnetic field direction detection unit 202 detects the magnetic field signal of the second magnetic body 112 and the magnetic induction intensity detected by the second magnetic body 112 meets the second set range.

The first setting range and the second setting range are usually determined by the setting of the magnetic field direction detection unit 202 itself, and the first setting range and the second setting range are different between magnetic field direction detection units 202 of different principles or specifications. In one embodiment, the magnetic field direction detection unit 202 is a tunnel magnetoresistive sensor (TMR), and the reference value of the first setting range of the magnetic field direction detection unit 202 is BOP, and the BOP is positive, and its Gauss value is 5Gs or 17Gs, that is, the BOP is +5Gs or +17Gs. When the detected magnetic induction intensity of the first magnetic body 111 is ≥+5Gs or +17Gs, such as the detected magnetic induction intensity of the first magnetic body 111 is +6Gs or +18Gs, it means that the first setting range is met, and the magnetic field direction detection unit 202 sends a first signal. The reference value of the second setting range is BRP, and its Gauss value is also 5Gs or 17Gs, that is, BRP is -5Gs or -17Gs. When the detected magnetic induction intensity of the second magnetic body 112 is ≤-5Gs or -17Gs, such as the detected magnetic induction intensity of the second magnetic body 112 is -6Gs or -18Gs, it means that the second setting range is met, and the magnetic field direction detection unit 202 sends a second signal. When the detected magnetic induction intensity is greater than BOP or less than BRP, the change in magnetic induction intensity does not affect the triggering of the magnetic field direction detection unit 202 until it is triggered again next time. Among them, the "+" and "-" indicate that the magnetic field directions corresponding to BOP and BRP are different.

Among them, except for the different directions, the values of BOP and BRP can be equal or different. The smaller the Gaussian values of BOP and BRP, the higher the sensitivity. Usually, when the detected magnetic induction intensity is greater than BOP, a low level is output and the temperature detection device 1 is turned on. When it is less than BRP, a high level is output and the temperature detection device 1 is turned off. Of course, it can be understood that by changing the control logic, in some embodiments, when a high level is output, the temperature detection device 1 is turned on, and when a low level is output, the temperature detection device 1 is turned off.

Compared with the scheme of controlling the power on and off by comparing the magnitude of the magnetic induction intensity alone, when the judgment of the magnetic field direction is added, the Gaussian values of the BOP and BRP can be smaller, making the magnetic field direction detection unit 202 more sensitive. The smaller the Gaussian values of the BOP and BRP, the smaller the movement difference between the first magnetic body 111 and the second magnetic body 112 to trigger the power on and off. In some embodiments, in the embodiment where the detection component 100 is rotatably connected to the device body 200, when the BOP is +5 and the BRP is -5, the detection component 100 may be turned on by rotating more than 20 degrees from the initial position, providing a larger effective use angle for the detection component 100. Moreover, when the judgment of the magnetic field direction is added, the triggering of the power on and off will be more accurate and reliable, and the power on and off can be accurately and reliably controlled even in the case of surrounding magnetic conductive materials and other magnetic bodies 110 for the magnetic field intensity or magnetic induction intensity.

Please continue to refer to Figures 3-16. In some embodiments, the detection assembly 100 is rotatably connected to the device body 200, and the first magnetic body 111 and the second magnetic body 112 are arranged around the rotation axis a1 of the detection assembly 100. In these embodiments, the first magnetic body 111 and the second magnetic body 112 move around the rotation axis a1 as the detection assembly 100 rotates. The magnetic field direction detection unit 202 is arranged on one side of the rotation track of the first magnetic body 111 and the second magnetic body 112 to detect the magnetic field signals of the first magnetic body 111 and the second magnetic body 112.

Of course, in other embodiments, the first magnetic body 111 and the second magnetic body 112 may also move relative to the device body 200 in other ways, such as the aforementioned translation method, and the magnetic field direction detection unit 202 is arranged on one side of the translation path of the first magnetic body 111 and the second magnetic body 112.

When the first magnetic body 111 and the second magnetic body 112 are used, the device has at least the first magnetic body 111 and the second magnetic body 112 at the same time, which expands the area and overall volume of the magnetic body 110, making the overall outward magnetic attraction of the device stronger, and the device can be magnetically adsorbed on other objects, making the temperature detection device 1 easier to store and use.

In particular, when the first magnetic body 111 and the second magnetic body 112 are arranged around the rotation axis a1, the radial area and the overall volume of the entire magnetic body 110 are increased. Although the magnetic field directions are different from each other, in the direction outward along the rotation axis, the first magnetic body 111 and the second magnetic body 112 can both adsorb metal materials, so the device can be better magnetically adsorbed on other objects, making it easier to store and use the temperature detection device 1.

In addition, in addition to the first detection area 101 being provided with the first magnetic body 111 and the second detection area 102 being provided with the second magnetic body 112, in some other embodiments, the magnetic body 110 may also only have the first magnetic body 111, and the space occupied by the first magnetic body 111 can be regarded as the first detection area 101, and the first magnetic body 111 has a gap, and the space occupied by the gap can be regarded as the second detection area 102, that is, the second detection area 102 has no magnetic body. At this time, the triggering of the magnetic field direction detection unit 202 by the first detection area 101 and the second detection area 102 is mainly achieved by judging the magnetic field direction of the first magnetic body 111 and the change of magnetic induction intensity.

Specifically, when the magnetic field direction detection unit 202 detects the magnetic field signal of the first magnetic body 111 and the magnetic induction intensity of the magnetic body 110 meets the third setting range, the first signal is issued; when the magnetic field direction detection unit 202 cannot detect the magnetic field signal of the first magnetic body 111, or the magnetic field direction detection unit 202 detects the magnetic field signal of the first magnetic body 111 and the magnetic induction intensity of the first magnetic body 111 meets the fourth setting range, the second signal is issued. The Gaussian value of the reference value BOP of the third setting range is greater than the Gaussian value of the reference value BRP of the fourth setting range. When the detected magnetic induction intensity ≥ BOP, it is considered to meet the third setting range, and when the detected magnetic induction intensity ≤ BRP, it is considered to meet the fourth setting range. In these embodiments, although only the first magnetic body 111 acts on the magnetic field direction detection unit 202 in the process of triggering the magnetic field direction detection unit 202 to send the first signal and the second signal, due to the additional reference of the magnetic field direction, the reliability of the power on and off can still be improved, and the power on and off can be accurately and reliably controlled even in the case of surrounding magnetic conductive materials and other magnetic bodies 110 for magnetic field intensity or magnetic induction intensity.

In other embodiments, the magnetic body 110 may be the second magnetic body 112. The magnetic body 110 may also only have the second magnetic body 112, and the space occupied by the second magnetic body 112 can be regarded as the second detection area 102. The second magnetic body 112 has a gap, and the space occupied by the gap can be regarded as the first detection area 101, that is, the first detection area 101 has no magnetic body. In this case, the triggering of the magnetic field direction detection unit 202 by the first detection area 101 and the second detection area 102 is mainly realized by the change of the magnetic field direction and magnetic induction intensity of the second magnetic body 112.

Specifically, when the magnetic field direction detection unit 202 cannot detect the magnetic field signal of the second magnetic body 112, or the magnetic field direction detection unit 202 detects the magnetic field signal of the second magnetic body 112 and the magnetic induction intensity of the second magnetic body 112 meets the third setting range, a first signal is issued; when the magnetic field direction detection unit 202 detects the magnetic field signal of the second magnetic body 112 and the magnetic induction intensity of the second magnetic body 112 meets the fourth setting range, a second signal is issued. The third setting range and the fourth setting range are defined as described above.

The above-mentioned first detection area 101 without magnetic body and second detection area 102 without magnetic body means that no magnetic body is set in the corresponding detection area. The detection area without magnetic body can be a blank area without anything, such as a gap, or it can be set with other non-magnetic parts, as long as there is no structure that can generate a magnetic field in the area.

Further, when the detection assembly 100 moves relative to the device body 200 (not limited to rotation, translation or other modes of movement), it has a closed position and a fully open position. As shown in FIG1 , when the detection assembly 100 is in the closed position, the detection assembly 100 is retracted onto the device body 200; as shown in FIG2 , when the detection assembly 100 is in the fully open position, the detection assembly 100 is opened to the maximum position. Of course, when the detection assembly 100 is in the closed position, each component in the detection assembly 100 (including the magnetic body 110) is also defined as being in the closed position. Similarly, when the detection assembly 100 is in the fully open position, each component in the detection assembly 100 (including the magnetic body 110) is also defined as being in the fully open position. Among them, the power-on position is located on the motion trajectory of the magnetic body 110 opening from the closed position to the fully open position, and the power-off position is located on the motion trajectory of the magnetic body 110 retracting from the fully open position to the closed position. That is, it can be understood that in some embodiments, the device can only be triggered to turn on when the detection component 100 (including the magnetic body 110) is in the process of opening from the closed position to the fully open position, and can only be triggered to turn off when the device is in the process of contracting from the fully open position to the closed position, thereby avoiding the possibility of accidental startup or shutdown.

In order to better describe the closed position, the closed position, the open position and the fully open position, please refer to Figures 5-8. In one embodiment, the changes of each position are schematically shown. Among them, considering that the closed position, the closed position, the open position and the fully open position are all position changes of the detection component 100 and its internal components on the motion trajectory, in order to more clearly show the relationship between these positions, Figures 5-8 use the magnetic body 110 as a reference to make auxiliary schematic lines corresponding to each position, wherein c1 is an auxiliary schematic line of the closed position on the magnetic body 110, c2 is an auxiliary schematic line of the closed position on the magnetic body 110, c3 is an auxiliary schematic line of the open position on the magnetic body 110, and c4 is an auxiliary schematic line of the fully open position on the magnetic body 110. These schematic lines c1, c2, c3, and c4 are all virtual reference lines taken on the magnetic body 110 to facilitate the introduction of the motion position of the magnetic body 110.

Wherein, please refer to FIG5, when the magnetic body 110 moves clockwise from the open state along the arrow to the closed position auxiliary schematic line c1 corresponding to the magnetic field direction detection unit 202, the magnetic body 110 is in the closed position at this time. Please refer to FIG6, when the magnetic body 110 moves counterclockwise from the closed position to the open position auxiliary schematic line c3 corresponding to the magnetic field direction detection unit 202 as shown by the arrow, the magnetic body 110 is in the open position at this time. Please refer to FIG7, when the magnetic body 110 moves counterclockwise from the open position to the fully open position auxiliary schematic line c4 corresponding to the magnetic field direction detection unit 202 as shown by the arrow, the magnetic body 110 is in the fully open position at this time. Please refer to FIG8, when the magnetic body 110 moves clockwise from the open state to the closed position auxiliary schematic line c2 corresponding to the magnetic field direction detection unit 202 as shown by the arrow, the magnetic body 110 is in the closed position at this time.

The angle between the closed position and the fully open position is H, which determines the opening angle of the detection component 100 (including the magnetic body 110) relative to the device body 200. In Figures 5-8 and Figures 17-20, the angle H is 180°. Of course, the angle H can also be set to >180° or <180° as needed. The angle between the open position and the closed position is the open angle C, and the angle between the open position and the closed position is the angle D. Of course, the schematic diagrams shown in Figures 5-8 take the rotational movement of the detection component 100 as an example. In other embodiments, the rotational movement can also be replaced by translation or other forms of movement.

In some embodiments, the shutdown position and the closed position may overlap, that is, when the detection component 100 (including the magnetic body 110) is in the closed position, the device is triggered to shut down at the same time. The user only needs to move the detection component 100 (including the magnetic body 110) to the closed position, which is easy to operate.

However, considering the machining error and assembly error, as well as the structural deformation that may exist during the use of the function or the user's failure to close the detection component 100 in place, the user cannot shut down the detection component 100 due to the error when moving the detection component 100 to the closed position, or it is difficult for the user to accurately close the detection component 100 to the shutdown position. In this regard, in some embodiments, please refer to Figures 5 and 8, so that a shutdown compensation angle A can be formed between the shutdown position and the closed position. That is, after the user moves the detection component 100 (including the magnetic body 110) to the shutdown position in the direction shown by the arrow in Figure 8, it can continue to move a certain angle until it moves to the closed position shown in Figure 5. The angle of the continued movement is the shutdown compensation angle A. The shutdown compensation angle A can compensate for the shutdown operation, and even if the user moves the detection component 100 (including the magnetic body 110) to the closed position but fails to reach the position, it can ensure that the detection component 100 (including the magnetic body 110) can be shut down smoothly.

In order to form the shutdown compensation angle A, the angle between the power-on position and the power-off position is angle D, the power-on angle C is greater than angle D, and the extra angle can form the shutdown compensation angle A. The specific angle of the shutdown compensation angle A can be set according to actual needs, and in order to avoid the increase of the power-on angle C due to the setting of the shutdown compensation angle A, therefore, in some embodiments, the shutdown compensation angle A is ≤20°.

In some embodiments, the power-on position and the fully open position may overlap or form an angle B. When the power-on position and the fully open position overlap, the user must open the detection assembly 100 (including the magnetic body 110) to the fully open position before turning on the device, which makes the temperature detection device 1 only able to measure temperature in one posture.

Please continue to refer to Figures 6 and 7. In the illustrated embodiment, an angle B is formed between the power-on position and the fully open position. As shown in Figure 6, when the detection component 100 (including the magnetic body 110) moves to the power-on position, the device is turned on. After that, the detection component 100 (including the magnetic body 110) can continue to move to the fully open position. Within the range of the angle B, the detection component 100 can stop at any position to perform temperature testing. The angle B can be flexibly set according to actual needs. In some embodiments, the angle B is ≥160°.

The angle D is a hysteresis angle formed according to the difference between the first setting range and the second setting range of the magnetic field direction detection unit 202. In some embodiments, the angle D is ≤ 20°, thereby obtaining a suitable hysteresis angle, which can ensure that the angle B of the detection assembly 100 can be larger.

Further, in order to save space and provide a sufficient magnetic field range to facilitate detection by the magnetic field direction detection unit 202 and increase the magnetic force of the device to absorb external metal materials, in one embodiment, please refer to Figures 5-8, 9 and 13, the first magnetic body 111 is arranged circumferentially around the rotation axis a1 of the detection component 100. At the same time, the center angle E of the first magnetic body 111 is greater than the angle B between the power-on position and the fully open position to ensure that the first magnetic body 111 always corresponds to the magnetic field direction detection unit 202 during the movement of the magnetic body 110 from the power-on position to the fully open position. Please refer to Figures 9 and 13, in some embodiments, the center angle E of the first magnetic body 111 is ≥180°.

Similarly, in order to save space and provide a sufficient magnetic field range to facilitate detection by the magnetic field direction detection unit 202 and increase the magnetic force of the device to absorb external metal materials, in one embodiment, please refer to Figures 5-8, 9 and 13, the second magnetic body 112 is arranged circumferentially around the rotation axis a1 of the detection component 100. At the same time, the center angle F of the second magnetic body 112 is greater than the shutdown compensation angle A between the shutdown position and the closed position to ensure that the second magnetic body 112 always corresponds to the magnetic field direction detection unit 202 during the movement of the magnetic body 110 from the shutdown position to the closed position. Please refer to Figures 9 and 13, in some embodiments, the center angle F of the second magnetic body 112 is ≤180°.

In the embodiment shown in FIG9 , the central angle E of the first magnetic body 111 and the central angle F of the second magnetic body 112 are both 180°, each accounting for half. In the embodiment shown in FIG13 , the central angle E of the first magnetic body 111 is 180°, and the central angle F of the second magnetic body 112 is 90°, thereby leaving a gap between the first magnetic body 111 and the second magnetic body 112, and the gap can be used for routing the connection cable 122 between the temperature detection unit 123 and the control unit 210.

On the other hand, in order to improve the accuracy and reliability of power on and off, in other embodiments of the present application, a magnetic induction intensity detection unit is provided for power on and off control. The magnetic induction intensity detection unit may be a Hall sensor or other sensors that can detect magnetic induction intensity and output different signals based on the magnitude of the magnetic induction intensity.

Please refer to Figures 17-24, some embodiments of a temperature detection device 1, wherein the detection component 100 is rotatably connected to the device body 200. The detection component 100 has a first detection area 101 and a second detection area 102 distributed around the rotation axis a1 of the detection component 100. One of the first detection area 101 and the second detection area 102 is provided with a third magnetic body 113, so that the magnetic induction intensity or magnetic field existence state of the first detection area 101 and the second detection area 102 is different.

In the embodiment shown in Figures 17-24, the space occupied by the third magnetic body 113 is the first detection area 101, and the space occupied by the gap 114 corresponding to the third magnetic body 113 is the second detection area 102. Of course, in other embodiments, the space occupied by the third magnetic body 113 can be the second detection area 102, and the space occupied by the gap 114 corresponding to the third magnetic body 113 can be the first detection area 101.

The magnetic induction intensity detection unit 203 is arranged on one side of the movement track of the magnetic body 110, so as to detect the magnetic field signals of the first detection area 101 and the second detection area 102. When the magnetic induction intensity detection unit 203 detects that the magnetic induction intensity of the third magnetic body 113 meets the first setting range, a first signal is issued; when the magnetic induction intensity detection unit 203 detects that the magnetic induction intensity of the third magnetic body 113 meets the second setting range, a second signal is issued. Among them, the second setting range is smaller than the first setting range. The control unit 210 controls the temperature detection device 1 to turn on according to one of the first signal and the second signal, and controls the temperature detection device 1 to turn off according to the other. The first signal and the second signal are the same as above.

When the third magnetic body 113 triggers the magnetic induction intensity detection unit 203 to send a first signal or a second signal for controlling power on, the detection component 100 (including the third magnetic body 113) is located in the power on position; when the third magnetic body 113 triggers the magnetic induction intensity detection unit 203 to send a second signal or a first signal for controlling power off, the detection component 100 (including the third magnetic body 113) is located in the power off position.

Among them, the reference value of the first setting range is usually greater than the reference value of the second setting range. The first setting range and the second setting range usually depend on the setting of the magnetic induction intensity detection unit 203 itself, and the first setting range and the second setting range are different between magnetic induction intensity detection units 203 of different principles or specifications. In one embodiment, the magnetic induction intensity detection unit 203 is a Hall sensor, and the reference value of the first setting range of the magnetic induction intensity detection unit 203 is BOP, and the Gauss value of the BOP is about 30 Gs. In some embodiments, it is 32 Gs. When the detected magnetic induction intensity of the third magnetic body 113 is ≥32 Gs, it means that the first setting range is met, and the magnetic induction intensity detection unit 203 sends a first signal. The reference value of the second setting range is BRP, and its Gauss value is about 20 Gs. In some embodiments, it is 24 Gs. When the detected magnetic induction intensity of the third magnetic body 113 is ≤24 Gs, it means that the second setting range is met, and the magnetic induction intensity detection unit 203 sends a second signal. When the detected magnetic induction intensity is greater than the BOP or less than the BRP, the change in magnetic induction intensity does not affect the triggering of the magnetic induction intensity detection unit 203 until it is triggered next time.

In some embodiments, in the process of opening the detection assembly 100, when the magnetic induction intensity detection unit 203 detects that the magnetic field strength is greater than the BOP, a low level is output, and the temperature detection device 1 is turned on; otherwise, a high level is output, and the temperature detection device 1 is turned off. In the process of closing the detection assembly 100, when the magnetic induction intensity detection unit 203 detects that the magnetic field strength is less than the BRP, a high level is output, and the temperature detection device 1 is turned off; otherwise, a low level is output, and the temperature detection device 1 is turned on. Of course, it can be understood that by changing the control logic, in some embodiments, when a high level is output, the temperature detection device 1 is turned on, and when a low level is output, the temperature detection device 1 is turned off.

In these embodiments of magnetic field detection by the magnetic induction intensity detection unit 203, the detection of the magnetic field direction can be omitted, and there is no need to set the first magnetic body 111 and the second magnetic body 112 with different magnetic pole directions. The triggering of the power on and off can be completed by detecting the magnetic induction intensity of the third magnetic body 113. Moreover, the first detection area 101 and the second detection area 102 are distributed around the rotation axis a1, so when the magnetic body 110 rotates, the first detection area 101 and the second detection area 102 can be detected by the magnetic induction intensity detection unit 203 in a longer range, the detection area is larger, and it is easier to be detected by the magnetic induction intensity detection unit 203, thereby increasing the reliability of the power on and off. Moreover, the third magnetic body 113 is arranged around the rotation axis a1, which expands the area and overall volume of the third magnetic body 113 in the radial plane, so that the overall outward magnetic attraction of the device is greater, and the device can be magnetically adsorbed on other objects, making the temperature detection device 1 easier to store and use.

Further, when the solution of the third magnetic body 113 is used, the detection assembly 100 (including the third magnetic body 113) also has a closed position and a fully open position. As shown in Figures 1 and 17, when the detection assembly 100 (including the third magnetic body 113) is in the closed position, the detection assembly 100 is retracted onto the device body 200; as shown in Figures 2 and 19, when the detection assembly 100 (including the third magnetic body 113) is in the fully open position, the detection assembly 100 is opened to the maximum position. The power-on position is located on the motion trajectory of the detection assembly 100 (including the third magnetic body 113) opening from the closed position to the fully open position, and the power-off position is located on the motion trajectory of the detection assembly 100 (including the third magnetic body 113) retracting from the fully open position to the closed position.

In order to better describe the closed position, the closed position, the open position and the fully open position, please refer to Figures 17-20. In one embodiment, the changes of each position are schematically shown. Among them, considering that the closed position, the closed position, the open position and the fully open position are all position changes of the detection component 100 and its internal components on the motion trajectory, in order to more clearly show the relationship between these positions, Figures 17-20 use the third magnetic body 113 as a reference to make auxiliary schematic lines corresponding to each position, wherein c1 is the auxiliary schematic line of the closed position on the third magnetic body 113, c2 is the auxiliary schematic line of the closed position on the third magnetic body 113, c3 is the auxiliary schematic line of the open position on the third magnetic body 113, and c4 is the auxiliary schematic line of the fully open position on the third magnetic body 113. These schematic lines c1, c2, c3, and c4 are all virtual reference lines taken on the third magnetic body 113 to facilitate the introduction of the motion position of the third magnetic body 113.

Wherein, please refer to FIG17, when the third magnetic body 113 moves clockwise from the open state along the arrow to the closed position auxiliary schematic line c1 corresponding to the magnetic induction intensity detection unit 203, the third magnetic body 113 is in the closed position. Please refer to FIG18, when the third magnetic body 113 moves counterclockwise from the closed position to the opening position auxiliary schematic line c3 corresponding to the magnetic induction intensity detection unit 203 as shown by the arrow, the third magnetic body 113 is in the opening position. Please refer to FIG19, when the third magnetic body 113 moves counterclockwise from the opening position to the fully opened position auxiliary schematic line c4 corresponding to the magnetic induction intensity detection unit 203 as shown by the arrow, the third magnetic body 113 is in the fully opened position. Please refer to FIG20, when the third magnetic body 113 moves counterclockwise from the open state to the closed position auxiliary schematic line c2 corresponding to the magnetic induction intensity detection unit 203 as shown by the arrow, the third magnetic body 113 is in the closed position. Among them, for the limitations of the angles A, B, C, D, and H in Figures 17-20, please refer to the aforementioned content.

Further, in some embodiments, the first detection area 101 is arranged circumferentially around the rotation axis a1 of the detection assembly 100, and the center angle I of the first detection area 101 is greater than the angle B between the power-on position and the fully open position, so as to ensure that the first detection area 101 always corresponds to the magnetic induction intensity detection unit 203 during the movement of the detection assembly 100 from the power-on position to the fully open position. Please refer to Figures 17-24. In these embodiments, the third magnetic body 113 is the first detection area 101, and the center angle I of the first detection area 101 is the center angle I of the third magnetic body 113, and the center angle I is greater than or equal to 180°, such as the center angle I is greater than or equal to 260°. In some embodiments, the center angle I is 180° or 225°. Of course, the range can be set to be larger according to actual needs. In other embodiments, the range and center angle of the first detection area 101 may also be greater than the range and center angle of the third magnetic body 113.

Further, in some embodiments, the second detection area 102 is arranged circumferentially around the rotation axis a1 of the detection assembly 100, and the center angle J of the second detection area 102 is greater than the shutdown compensation angle A between the shutdown position and the closed position, so as to ensure that the second detection area 102 always corresponds to the magnetic induction intensity detection unit 203 during the movement of the third magnetic body 113 from the shutdown position to the closed position. Please refer to Figures 17-24. In these embodiments, the notch 114 left on the third magnetic body 113 is the second detection area 102, and the center angle J of the second detection area 102 is the center angle J of the notch 114. The center angle J of the second detection area 102 is ≤100°, such as the center angle J≤100°. In some embodiments, the center angle J of the second detection area 102 is 90°. Of course, the range can be set to be larger according to actual needs. In other embodiments, the range and center angle of the second detection area 102 can also be greater than the range and center angle corresponding to the notch 114 on the third magnetic body 113.

In order to ensure that the detection assembly 100 has a larger opening range, in some embodiments, the central angle I of the first detection area 101 is greater than the central angle J of the second detection area 102 .

Furthermore, the central angle J of the notch 114 needs to ensure that when the notch 114 corresponds to the magnetic induction intensity detection unit 203, within a certain angle range, the magnetic induction intensity measured by the magnetic induction intensity detection unit 203 can be less than the BRP value to ensure that the temperature detection device 1 can be stably shut down under shaking, vibration, or magnet error.

Generally, in some embodiments, the first setting range is used for power-on judgment, and the second setting range is used for power-off judgment. When the third magnetic body 113 is in the closed position, the smaller the magnetic induction intensity measured by the magnetic induction intensity detection unit 203 at the notch 114 and the farther from the BOP, the less likely it is to be accidentally turned on due to accidental contact, misoperation, magnetic conductive materials or other magnetic bodies 110. In some embodiments, the magnetic induction intensity measured by the magnetic induction intensity detection unit 203 at the notch 114 can even be 0 (when the center line of the notch 114 is aligned with the magnetic induction intensity detection unit 203, the magnetic induction intensity measured by the magnetic induction intensity detection unit 203 is usually 0). However, since the condition for triggering the power-on requires that the magnetic induction intensity measured by the magnetic induction intensity detection unit 203 reaches the BOP, this process requires rotating the third magnetic body 113 (as shown in FIGS. 17 and 18) so that the third magnetic body 113 gradually approaches the magnetic induction intensity detection unit 203, thereby gradually increasing the magnetic induction intensity measured by the magnetic induction intensity detection unit 203. When the initial magnetic induction intensity measured by the magnetic induction intensity detection unit 203 in the closed position is 0 or too small, it is necessary to rotate a larger angle so that the third magnetic body 113 can move to a position that can trigger the magnetic induction intensity detection unit 203 to send a power-on signal, which undoubtedly increases the power-on angle, thereby reducing the effective opening angle of the detection component 100 after power-on (that is, the angle at which the detection component 100 can be opened under the premise of being able to detect temperature). Therefore, in one embodiment, when the detection component 100 is in the closed position, it is set to 0 < the magnetic induction intensity of the third magnetic body 113 detected by the magnetic induction intensity detection unit 203 < the second set range (BRP). That is, when the detection component 100 (including the third magnetic body 113) is in the closed position, the magnetic induction intensity detection unit 203 can detect a certain value of the initial magnetic induction intensity, reduce the difference between the initial magnetic induction intensity and the BOP, so that the third magnetic body 113 does not need to rotate too much angle to meet the power-on requirements, and reduce the power-on angle C. In some embodiments, when the detection component 100 is in the closed position, the magnetic induction intensity detection unit 203 can detect a magnetic field intensity of about 10-15 Gauss. At this time, the detection component 100 can be turned on by rotating it about 20°.

Please refer to Figures 17-24. In some embodiments, the third magnetic body 113 has a front end and a rear end in the opening direction, that is, when the third magnetic body 113 moves in the opening direction, one end located in the front side of the movement direction is the front end, and the other end is the rear end. In order to achieve that when the third magnetic body 113 is in the closed position, the magnetic induction intensity detection unit 203 can measure a certain magnetic induction intensity and reduce the opening angle C. In one embodiment, when the third magnetic body 113 is in the closed position, the angle formed by the magnetic induction intensity detection unit 203 and the front end is smaller than the angle formed by the magnetic induction intensity detection unit 203 and the rear end. That is, when the third magnetic body 113 is in the closed position, the magnetic induction intensity detection unit 203 corresponds to the area of the midline of the notch 114 close to the front end of the third magnetic body 113, thereby reducing the opening angle.

Or, from another perspective, please refer to Figures 17 and 19. In some embodiments, when the third magnetic body 113 is in the closed position, the angle G formed by the magnetic induction intensity detection unit 203 and the front end is ≤ one-fourth of the central angle J of the second detection area 102 (such as the central angle J of the notch 114), so as to ensure that when the detection component 100 (including the third magnetic body 113) is in the closed position, the magnetic induction intensity detection unit 203 can detect a certain value of initial magnetic induction intensity.

Alternatively, in some embodiments, when the third magnetic body 113 is in the closed position, the magnetic induction intensity of the third magnetic body 113 detected by the magnetic induction intensity detection unit 203 is between one third and one half of the reference value of the first setting range.

In other embodiments, the second detection area 102 may also have a fourth magnetic body with a magnetic induction intensity smaller than the third magnetic body 113, and the fourth magnetic body forms a groove with the third magnetic body 113. The third magnetic body 113 and the fourth magnetic body may form a ring or disk structure as a whole.

Please refer to Figures 21-24, an embodiment, the third magnetic body 113 is arranged around the circumference of the rotation axis a1 of the detection component 100 into a disk structure or an annular structure with a groove or notch 114, compared with setting a single small circular magnet at a certain position around the circumference of the rotation axis, so as to increase the radial area of the third magnetic body 113 and thereby increase the external adsorption magnetic force.

Furthermore, in the above embodiments, in addition to improving the reliability of the on/off triggering, the temperature detection device 1 can also be adsorbed onto a metal material through the magnetic body 110. In some embodiments, it can be adsorbed onto a metal casing or other parts of other kitchen equipment.

Specifically, the detection component 100 may also have an attachment outer wall 131 for attaching metal materials, and the magnetic body 110 (which may be the first magnetic body 111, the second magnetic body 112 and/or the third magnetic body 113) is located on the inner side of the adsorption outer wall to adsorb the temperature detection device 1 onto the metal material.

In some embodiments, as shown in FIG3 , the magnetization directions of the first magnetic body 111 and the second magnetic body 112 are arranged along their axial directions. The axial directions of the first magnetic body 111 and the second magnetic body 112 are the rotation axis a1 of the detection assembly 100, and the rotation axis a1 passes through the attached outer wall 131. By arranging the magnetization directions of the first magnetic body 111 and the second magnetic body 112 along their axial directions, the magnetic force of the first magnetic body 111 and the second magnetic body 112 acting on the attached outer wall 131 can be increased to increase the magnetic attraction, so that the temperature detection device 1 can be more stably magnetically attracted to the metal material.

In some embodiments, the attached outer wall 131 is perpendicular to the rotation axis a1, and the magnetization directions of the first magnetic body 111 and the second magnetic body 112 may be perpendicular to the attached outer wall 131, further enhancing the magnetic force of the first magnetic body 111 and the second magnetic body 112 acting on the attached outer wall 131.

Or, in some other embodiments, the magnetization directions of the first magnetic body 111 and the second magnetic body 112 are along their radial directions. Please refer to Figures 5-16. In some embodiments, the magnetic field direction detection unit 202 is arranged in the radial direction of the first magnetic body 111 and the second magnetic body 112. When the first magnetic body 111 and the second magnetic body 112 are magnetized along their radial directions, the radial magnetic field signal can be increased, which is more conducive to being detected by the magnetic field direction detection unit 202.

Similarly, the magnetization direction of the third magnetic body 113 can also be along its axial direction, and the axial direction of the third magnetic body 113 is the rotation axis a1 of the detection assembly 100, and the axial direction passes through the attached outer wall 131. By setting the magnetization direction of the third magnetic body 113 along its axial direction, the magnetic force of the third magnetic body 113 acting on the attached outer wall 131 can be increased to increase the magnetic attraction, so that the temperature detection device 1 can be more stably magnetically attracted to the metal material.

In some embodiments, the attached outer wall 131 is perpendicular to the rotation axis a1 , and the magnetization direction of the third magnetic body 113 may be perpendicular to the attached outer wall 131 , further increasing the magnetic force of the third magnetic body 113 acting on the attached outer wall 131 .

Of course, please refer to FIGS. 17-20 , in some embodiments, the magnetization direction of the third magnetic body 113 may also be along its radial direction, so as to be more easily detected by the magnetic induction intensity detection unit 203 located in the radial direction of the third magnetic body 113 .

From another perspective, in one embodiment, the ratio a of the total volume of each magnetic body on the detection component 1 (such as the volume of the first magnetic body 111 + the second magnetic body 112, or the volume of the third magnetic body 113) to the weight of the temperature detection device 1 is: 4.0mm3/g≤a≤23.0mm3/g, which can ensure that the temperature detection device 1 can be more firmly adsorbed to the metal material to avoid the temperature detection device 1 from falling off the adsorbed object due to excessive weight. In some embodiments, the total magnetic force of the first magnetic body 111 plus the second magnetic body 112 or the total magnetic force of the third magnetic body 113 can be ≤6000Gs, and the total volume of the first magnetic body 111 plus the second magnetic body 112 or the third magnetic body 113 can be 500-1950mm3. The total weight of the temperature detection device can be 87-120g.

Further, in terms of the installation of the magnetic body 110 (which may be the first magnetic body 111, the second magnetic body 112 and/or the third magnetic body 113), please refer to Figures 4-25. In some embodiments, the detection assembly 100 is rotatably connected to the device body 200. In some embodiments, the device body 200 has a rotatably arranged adapter shaft 220, and the detection assembly 100 is fixedly connected to the adapter shaft 220 and rotates relative to the device body 200 through the rotating shaft 220. The rotational connection between the detection assembly 100 and the device body 200 is not limited to the illustrated scheme, and can also be implemented using other rotational connection structures.

The first magnetic body 111 and the second magnetic body 112 or the third magnetic body 113 are arranged in a disc-shaped structure or an annular structure around the rotation axis a1 of the detection component 100. The disc-shaped structure or the annular structure can expand the radial area and the overall volume of the magnetic body 110 without increasing the volume of the detection component 100, thereby increasing the magnetic force of the magnetic body 110 to enhance the magnetic attraction effect. Moreover, when a disc-shaped structure or annular structure is adopted, due to the increase in the radial area, the axial thickness of the magnetic body 110 can be further reduced while satisfying the external magnetic attraction function, which is conducive to the thinness of the detection component 100 and the entire temperature detection device 1.

In some embodiments, a through hole may be reserved in the middle of the disk-shaped structure or the ring-shaped structure for passing the connecting cable 122 or for fixing other components (such as the fixing cover 133 described below).

Further, please refer to Figures 4, 9-16 and 21-25. In some embodiments, the detection assembly 100 has a base 132. The magnetic body 110 and the temperature detection unit 123 are mounted on the base 132, and the base 132 is rotatably connected to the device body 200. A wiring channel 204 is provided between the base 132 and the device body 200 to accommodate the connection cable 122 of the temperature detection unit 123. The temperature detection unit 123 is connected to the control unit 210 by signal through the connection cable 122. The wiring channel 204 can be located on the rotation axis a1 of the detection assembly 100 relative to the device body 200, such as passing through the center of the connecting shaft 220, so as to reduce the distortion and deformation of the connection cable 122 when the detection assembly 100 rotates, and to improve the service life of the connection cable 122.

14 and 22, in some embodiments, in order to allow the connection cable 122 of the temperature detection unit 123 to pass through the wiring channel 204 below the magnetic body 110, the magnetic body 110 has a notch 114, which is connected to the wiring channel 204 for the connection cable 122 of the temperature detection unit 123 to pass through.

Please refer to FIG. 25 . In some embodiments, a gap 1322 may be left on the side of the magnetic body 110 facing the base 132. The gap 1322 is connected to the wiring channel 204 for the connection cable 122 of the temperature detection unit 123 to pass through. The side of the gap 1322 has an opening 1323, and the opening 1323 is used for the connection cable 122 to enter the gap 1322. Compared with the notch 114 shown in FIGS. 14 and 21 , leaving enough gap 1322 on the bottom surface of the magnetic body 110 can increase the activity area of the connection cable 122. During the rotation of the detection assembly 100, the connection cable 122 has a higher degree of freedom, which can further prevent the connection cable 122 from twisting and deforming.

Please refer to Figures 4 and 25. In some embodiments, the base 132 has a bottom surface 1324 and a magnetic support 1321. The wiring channel 204 is provided on the bottom surface 1324. The magnetic body 110 is installed on the magnetic support 1321 and forms a gap 1322 with the bottom surface 1324.

Further, please refer to Figures 4 and 25, in some embodiments, the base 132 has a cylindrical structure, the cylindrical structure has a cavity, the magnetic body 110 is disposed in the cavity, the magnetic body support 1321 is protruded and disposed on the inner wall of the cavity, and an opening 1323 is formed between the magnetic body support 1321. The magnetic body support 1321 can be protruded and disposed on the bottom wall and/or side wall of the cavity to form a support platform, and the magnetic body 110 is placed on the magnetic body support.

Since the magnetic body 110 itself is not easy to process and fix the structure, please refer to Figures 4 and 25. In some embodiments, the detection component 100 has a fixed cover 133, which is buckled on the magnetic body 110. The fixed cover 133 is fixedly connected to the base 132 to fix the magnetic body 110 on the base 132. The fixed cover 133 can be clamped, bonded, screwed, welded, etc. to the base 132. In the embodiments shown in Figures 4 and 25, the fixed cover 133 is fixed to the base 132 by a buckle 1331, which can be easily disassembled. Of course, in order to strengthen the fixation, a fixing hole 1332 can also be set in the middle of the fixed cover 133, and the fixed cover 133 can be fixed to the device body 200 through the fixing hole 1332, and can be fixed to the above-mentioned adapter shaft 220. In order to strengthen the fixing effect, the fixed cover 133 can be made of metal material. Of course, the fixed cover 133 can also be made of other materials. In some embodiments, the fixed cover 133 is made of plastic.

Further, the fixed cover 133 itself can be used as an outer cover of the detection assembly 100. In other embodiments, please refer to Figures 4 and 25, the detection assembly 100 also includes an outer cover 134, which is snapped on the base 132 and covers the cavity of the base 132 and the magnetic body 110 and the fixed cover 133 located in the cavity. The outer wall of the outer cover 134 can be regarded as an adsorption outer wall. Of course, the adsorption outer wall can also be set at other positions of the detection assembly 100. The outer cover can be used as a decorative outer cover, so a material that is easy to process, such as plastic, can be selected.

Further, please refer to Figures 9-16 and Figures 21-24. In some embodiments, the base 132 is cylindrical with a cavity, the detection assembly 100 has a probe 121, the temperature detection unit 123 is arranged on the probe 121, one end of the probe 121 extends into the cavity of the base 132, and the magnetic body 110 is located on one side of the probe 121. The magnetic body 110 is provided with an avoidance structure to avoid the probe 121. In some embodiments, in the embodiments shown in Figures 9-16 and Figures 21-24, the end of the annular magnetic body 110 extending into the base 132 toward the probe 121 forms a section so as to leave space to accommodate the probe 121. The probe 121 and the magnetic body 110 are arranged side by side, which can reduce the thickness of the temperature measuring assembly in the direction of the rotation axis a1, which is conducive to the thinness of the device.

Further, please refer to Figures 3, 4 and 25. In some embodiments, the device body 200 may have a main housing 230, and the main housing 230 has an installation cavity, in which the control unit 210, the display assembly 240, the battery (which may be omitted) and other components may be accommodated. The main housing 230 may have a first housing 231, a second housing 232 or more sub-housings. The first housing 231 and the second housing 232 surround the installation cavity. The detection assembly 100 is movably mounted on the main housing 230 as a whole. In some embodiments, it is rotatably connected to the main housing 230 through the above-mentioned rotation axis. Of course, it can also be a movable connection in translation or other ways. Please refer to Figures 4 and 25. In one embodiment, in addition to the main housing 230, a shell 250 can also be provided to cover the upper surface of the main housing 230 to form a more concise appearance.

Those skilled in the art will appreciate that many changes may be made to the details of the above-described embodiments without departing from the basic principles of the invention. Accordingly, the scope of the invention should be determined from the following claims.

Claims

A temperature detection device , The invention is characterized by comprising:

A detection component, wherein the detection component comprises a temperature detection unit for temperature detection and a magnetic body, wherein the magnetic body is at least divided into a first magnetic body and a second magnetic body, and the magnetic poles of the first magnetic body and the second magnetic body are in opposite directions;

and a device body, the device body having a control unit and a magnetic field direction detection unit, the magnetic field direction detection unit being connected to the control unit by signal, and the temperature detection unit being connected to the control unit by signal;

The detection assembly is rotatably connected to the device body, and the first magnetic body and the second magnetic body are arranged around the rotation axis of the detection assembly;

The magnetic field direction detection unit is arranged at one side of the motion track of the magnetic body, and is used to detect the magnetic field signals of the first magnetic body and the second magnetic body, and the magnetic field signals at least include the magnetic field direction; during the motion of the first magnetic body and the second magnetic body, the magnetic field direction detection unit sends out a first signal and a second signal based on the detection results of the magnetic field signals of the first magnetic body and the second magnetic body;

The control unit controls the temperature detection device to turn on according to one of the first signal and the second signal, and controls the temperature detection device to turn off according to the other one.
As claimed 1 The temperature detection device is characterized in that when the magnetic field direction detection unit detects the magnetic field signal of the first magnetic body and the magnetic field intensity of the first magnetic body detected meets the first set range, the magnetic field direction detection unit sends a first signal;

When the magnetic field direction detection unit detects the magnetic field signal of the second magnetic body and the detected magnetic field intensity of the second magnetic body meets a second set range, the magnetic field direction detection unit sends a second signal.
As claimed 1 or 2 The temperature detection device is characterized in that the motion trajectory of the detection component has an on position and an off position; when the detection component triggers the magnetic field direction detection unit to send the first signal or the second signal to control the on-state, the detection component is located at the on position; when the detection component triggers the magnetic field direction detection unit to send the second signal or the first signal to control the off-state, the detection component is located at the off position;

The detection component is provided with a closed position and a fully open position on the movement trajectory relative to the device body. When the detection component is in the closed position, the detection component is retracted onto the device body; when the detection component is in the fully open position, the detection component is opened to the maximum position;

The on position is located on a movement trajectory of the detection component opening from the closed position to the fully open position, and the off position is located on a movement trajectory of the detection component retracting from the fully open position to the closed position.
As claimed 3 The temperature detection device is characterized in that the shutdown position and the closed position overlap or form a shutdown compensation angle. A .
As claimed 4 The temperature detection device is characterized in that the shutdown compensation angle A ≤ 20 °.
As claimed 3 The temperature detection device is characterized in that the power-on position and the fully open position overlap or form an angle. B .
As claimed 3 The temperature detection device is characterized in that the angle between the open position and the closed position is the open angle C , the angle between the on position and the off position is the angle D , boot angle C Greater than the angle D .
As claimed 7 The temperature detection device is characterized in that the angle D ≤ 20 °.
As claimed 3 The temperature detection device is characterized in that:

The first magnetic body is arranged circumferentially around the rotation axis of the detection assembly, and the central angle of the first magnetic body is E Greater than the angle between the power-on position and the fully open position B , to ensure that during the movement of the detection component from the power-on position to the fully open position, the first magnetic body always corresponds to the magnetic field direction detection unit.
As claimed 9 The temperature detection device is characterized in that the central angle of the first magnetic body E ≥ 180 °.
As claimed 3 The temperature detection device is characterized in that:

The second magnetic body is arranged circumferentially around the rotation axis of the detection assembly, and the central angle of the second magnetic body is F Greater than the shutdown compensation angle between the shutdown position and the closed position A , to ensure that during the movement of the detection component from the off position to the closed position, the second magnetic body always corresponds to the magnetic field direction detection unit.
As claimed 11 The temperature detection device is characterized in that the central angle of the second magnetic body F ≤ 180 °.
As claimed 1-12 Any one of the temperature detection devices is characterized in that the first magnetic body and the second magnetic body are different regions of the same magnetic member, or the first magnetic body and the second magnetic body are two independent magnetic members.
As claimed 1-13 Any one of the temperature detection devices is characterized in that the detection component has an attachment outer wall for attaching a metal material, and the magnetic body is located on the inner side of the adsorption outer wall to adsorb the temperature detection device onto the metal material.
As claimed 1-14 Any one of the temperature detection devices is characterized in that the magnetization directions of the first magnetic body and the second magnetic body are both along their axial directions; or the magnetization directions of the first magnetic body and the second magnetic body are both along their radial directions.
As claimed 14 The temperature detection device is characterized in that the magnetization directions of the first magnetic body and the second magnetic body are perpendicular to the attached outer wall.
As claimed 14-16 Any one of the temperature detection devices is characterized in that the attached outer wall is perpendicular to the rotation axis.
A temperature detection device , The invention is characterized by comprising:

A detection component, the detection component comprising a temperature detection unit for temperature detection, a first detection area and a second detection area, at least one of the first detection area and the second detection area is provided with a magnetic body, so that the magnetic field directions of the first detection area and the second detection area are different or the magnetic field existence states are different;

and a device body, the device body having a control unit and a magnetic field direction detection unit, the magnetic field direction detection unit being connected to the control unit by signal, and the temperature detection unit being connected to the control unit by signal;

The detection component is movably connected to the device body; the magnetic field direction detection unit is arranged on one side of the motion track of the first detection area and the second detection area, so as to detect the magnetic field direction of the first detection area and the second detection area. / or a magnetic field signal of the second detection area, wherein the magnetic field signal at least includes a magnetic field direction;

During the movement of the first detection area and the second detection area, the magnetic field direction detection unit sends out a first signal and a second signal based on the detection results of the first detection area and the second detection area, and the control unit controls the temperature detection device to turn on according to one of the first signal and the second signal, and controls the temperature detection device to turn off according to the other.
As claimed 18 The temperature detection device is characterized in that:

The magnetic body is divided into at least a first magnetic body and a second magnetic body, the space occupied by the first magnetic body is the first detection area, the space occupied by the second magnetic body is the second detection area, and the magnetic pole directions of the first magnetic body and the second magnetic body are different, so that the magnetic field direction detection unit can distinguish the first magnetic body and the second magnetic body according to the magnetic field direction;

When the magnetic field direction detection unit detects the magnetic field signal of the first detection area and the magnetic induction intensity of the first detection area meets a first set range, a first signal is sent;

When the magnetic field direction detection unit detects the magnetic field signal of the second detection area and the magnetic induction intensity of the second detection area meets the second set range, a second signal is sent out.
As claimed 18 The temperature detection device is characterized in that the magnetic body is a first magnetic body, the space occupied by the first magnetic body is the first detection area, the first magnetic body has a notch, and the space occupied by the notch is the second detection area;

When the magnetic field direction detection unit detects the magnetic field signal of the first magnetic body and the magnetic induction intensity of the first magnetic body meets a third set range, a first signal is issued;

When the magnetic field direction detection unit cannot detect the magnetic field signal of the first magnetic body, or when the magnetic field direction detection unit detects the magnetic field signal of the first magnetic body and the magnetic induction intensity of the first magnetic body meets the fourth setting range, a second signal is issued.
As claimed 18 The temperature detection device is characterized in that the magnetic body is a second magnetic body, the space occupied by the second magnetic body is the second detection area, the second magnetic body has a notch, and the space occupied by the notch is the first detection area;

When the magnetic field direction detection unit cannot detect the magnetic field signal of the second magnetic body, or when the magnetic field direction detection unit detects the magnetic field signal of the second magnetic body and the magnetic induction intensity of the second magnetic body meets the third set range, a first signal is sent;

When the magnetic field direction detection unit detects the magnetic field signal of the second magnetic body and the magnetic induction intensity of the second magnetic body meets the fourth setting range, a second signal is issued.
As claimed 18-21 Any one of the temperature detection devices is characterized in that the motion trajectory of the detection component has an on position and an off position; when the detection component triggers the magnetic field direction detection unit to send the first signal or the second signal to control the power on, the detection component is located at the on position; when the detection component triggers the magnetic field direction detection unit to send the second signal or the first signal to control the power off, the detection component is located at the off position;

The detection component is provided with a closed position and a fully open position on the movement trajectory relative to the device body. When the detection component is in the closed position, the detection component is retracted onto the device body; when the detection component is in the fully open position, the detection component is opened to the maximum position;

The on position is located on a movement trajectory of the detection component opening from the closed position to the fully open position, and the off position is located on a movement trajectory of the detection component retracting from the fully open position to the closed position.
As claimed twenty two The temperature detection device is characterized in that the movement of the detection component relative to the device body is rotation or translation.
As claimed twenty two or twenty three The temperature detection device is characterized in that the off position and the closed position overlap or are spaced apart; the on position and the fully open position overlap or are spaced apart.
As claimed 18-24 Any one of the temperature detection devices is characterized in that the detection component has an attachment outer wall for attaching a metal material, and the magnetic body is located on the inner side of the adsorption outer wall to adsorb the temperature detection device onto the metal material.
As claimed 25 The temperature detection device is characterized in that the magnetization direction of the magnetic body is perpendicular to the attached outer wall.
As claimed 14 or 25 The temperature detection device is characterized in that the ratio of the total volume of each magnetic body on the detection component to the weight of the temperature detection device is a for: 4.0mm3/g ≤ a ≤ 23.0mm3/g .
As claimed 1-27 Any one of the temperature detection devices is characterized in that the detection component is rotatably connected to the device body, and the magnetic body is arranged in a disc-shaped structure or a ring-shaped structure around the rotation axis of the detection component.
As claimed 28 The temperature detection device is characterized in that the detection component has a base, the magnetic body and the temperature detection unit are installed on the base, the base is rotatably connected to the device body, and a wiring channel is provided between the base and the device body to accommodate the connection cable of the temperature detection unit.
As claimed 29 The temperature detection device is characterized in that the magnetic body has a notch, and the notch is connected to the wiring channel for allowing the connecting cable of the temperature detection unit to pass through.
As claimed 29 or 30 The temperature detection device is characterized in that a gap is left on a side of the magnetic body facing the base, and the gap is connected to the wiring channel for the connection cable of the temperature detection unit to pass through.
As claimed 31 The temperature detection device is characterized in that the base has a bottom surface and a magnetic support, the wiring channel is arranged on the bottom surface, the magnetic body is installed on the magnetic support and forms the gap with the bottom surface, and the side of the gap has an opening, and the opening is used for the connecting cable to enter the gap.
As claimed 32 The temperature detection device is characterized in that the base has a cylindrical structure, the cylindrical structure has a cavity, the magnetic body is arranged in the cavity, the magnetic body support member is protruded and arranged on the inner wall of the cavity, and the opening is formed between the magnetic body support members.
As claimed 33 The temperature detection device is characterized in that the detection component has a fixed cover, the fixed cover is buckled on the magnetic body, and the fixed cover is fixedly connected to the base to place the magnetic body on the base.
As claimed 34 The temperature detection device is characterized in that the detection component also includes an outer cover, which is buckled on the base and covers the cavity of the base and the magnetic body and the fixed cover located in the cavity.
As claimed 28-35 Any one of the temperature detection devices is characterized in that the base is cylindrical with a cavity, the detection assembly has a probe, the temperature detection unit is arranged on the probe, one end of the probe extends into the cavity of the base, the magnetic body is located on one side of the probe, and the magnetic body is provided with an avoidance structure to avoid the probe.
As claimed 1-36 Any one of the temperature detection devices is characterized in that the magnetic field direction detection unit is a tunnel magnetoresistance sensor.
A temperature detection device , The invention is characterized by comprising:

A detection component, wherein the detection component has a temperature detection unit for temperature detection;

and a device body, the device body comprising a control unit and a magnetic field strength detection unit, the magnetic field strength detection unit being connected to the control unit by signal, and the temperature detection unit being connected to the control unit by signal;

The detection assembly is rotatably connected to the device body, and the detection assembly has a first detection area and a second detection area distributed around the rotation axis of the detection assembly, and one of the first detection area and the second detection area is provided with the third magnetic body, so that the magnetic induction intensity or magnetic field existence state of the first detection area and the second detection area is different; the magnetic induction intensity detection unit is arranged on one side of the motion track of the third magnetic body, so as to detect the magnetic field signal second detection area of the first detection area and the second detection area;

When the magnetic field strength detection unit detects that the magnetic field strength of the third magnetic body meets a first set range, a first signal is issued;

When the magnetic field strength detection unit detects that the magnetic field strength of the third magnetic body meets a second setting range, a second signal is issued, and the second setting range is smaller than the first setting range;

The control unit controls the temperature detection device to turn on according to one of the first signal and the second signal, and controls the temperature detection device to turn off according to the other one.
As claimed 38 The temperature detection device is characterized in that the motion trajectory of the detection component has an on position and an off position; when the third magnetic body triggers the magnetic field direction detection unit to send the first signal or the second signal to control the on-state, the third magnetic body is located at the on position; when the third magnetic body triggers the magnetic field direction detection unit to send the second signal or the first signal to control the off-state, the third magnetic body is located at the off position;

The third magnetic body is provided with a closed position and a fully open position on the movement trajectory relative to the device body. When the third magnetic body is in the closed position, the detection component is retracted onto the device body; when the third magnetic body is in the fully open position, the detection component is opened to the maximum position.

The on position is located on a movement trajectory of the detection component opening from the closed position to the fully open position, and the off position is located on a movement trajectory of the detection component retracting from the fully open position to the closed position.
As claimed 39 The temperature detection device is characterized in that the shutdown position and the closed position overlap or form a shutdown compensation angle. A .
As claimed 40 The temperature detection device is characterized in that the shutdown compensation angle A ≤ 20 °.
As claimed 39 The temperature detection device is characterized in that the power-on position and the fully open position overlap or form an angle. B .
As claimed 42 The temperature detection device is characterized in that the angle between the open position and the closed position is the open angle C , the angle between the on position and the off position is angle D , the power-on angle C Greater than the angle D .
As claimed 49 The temperature detection device is characterized in that the angle D ≤ 20 °.
As claimed 39 The temperature detection device is characterized in that the third magnetic body has a front end and a rear end in the opening direction, and when the third magnetic body is in the closed position, the angle formed by the magnetic field strength detection unit and the front end is smaller than the angle formed by the magnetic field strength detection unit and the rear end.
As claimed 45 The temperature detection device is characterized in that when the third magnetic body is in the closed position, the angle formed by the magnetic field intensity detection unit and the front end is G ≤ the central angle of the second detection area J one quarter of .
As claimed 39 The temperature detection device is characterized in that when the third magnetic body is in the closed position, the magnetic field strength of the third magnetic body detected by the magnetic field strength detection unit is greater than 0 .
As claimed 47 The temperature detection device is characterized in that when the third magnetic body is located in the closed position, the magnetic field strength of the third magnetic body detected by the magnetic field strength detection unit is between one third and one half of the first setting range reference value.
As claimed 39 The temperature detection device is characterized in that the third magnetic body is arranged circumferentially around the rotation axis of the detection component, and the central angle of the third magnetic body is I >The angle between the power-on position and the fully open position B , to ensure that when the detection component moves from the power-on position to the fully open position, the third magnetic body always corresponds to the magnetic field strength detection unit.
As claimed 49 The temperature detection device is characterized in that the central angle of the third magnetic body I ≥ 180 °.
As claimed 39 The temperature detection device is characterized in that the third magnetic body has a notch, the notch is the second detection area, the notch is arranged circumferentially around the rotation axis of the detection component, and the central angle of the notch is J > Shutdown compensation angle between the shutdown position and the closed position A , so as to ensure that when the third magnetic body moves from the off position to the closed position, the notch always corresponds to the magnetic field strength detection unit.
As claimed 51 The temperature detection device is characterized in that the central angle of the notch is J ≤ 180 °.
As claimed 39 The temperature detection device is characterized in that the central angle of the first detection area I >The central angle of the second detection area J .
As claimed 38-53 Any one of the temperature detection devices is characterized in that the detection component has an attachment outer wall for attaching a metal material, and the third magnetic body is located on the inner side of the adsorption outer wall to adsorb the temperature detection device onto the metal material.
As claimed 38-54 Any one of the temperature detection devices is characterized in that the magnetization direction of the third magnetic body is along its axial direction; or the magnetization direction of the magnetic body is along its radial direction.
As claimed 55 The temperature detection device is characterized in that the magnetization direction of the third magnetic body is perpendicular to the attached outer wall.
As claimed 54 The temperature detection device is characterized in that the attached outer wall is perpendicular to the rotation axis.
As claimed 39-57 Any one of the temperature detection devices is characterized in that the second detection area is a notch formed on the third magnetic body, or the second detection area has a fourth magnetic body with a magnetic induction intensity smaller than that of the third magnetic body, and the fourth magnetic body forms a groove with the third magnetic body.
As claimed 58 The temperature detection device is characterized in that the third magnetic body is arranged in a disk-shaped structure or a ring-shaped structure around the rotation axis of the detection component.
As claimed 39-59 Any one of the temperature detection devices is characterized in that the detection component has a base, the third magnetic body and the temperature detection unit are mounted on the base, the base is rotatably connected to the device body, a wiring channel is provided between the base and the device body, and the notch is connected to the wiring channel for allowing the connecting cable of the temperature detection unit to pass through.
As claimed 60 The temperature detection device is characterized in that a gap is left on a side of the third magnetic body facing the base, and the gap is connected to the wiring channel for the connection cable of the temperature detection unit to pass through.
As claimed 61 The temperature detection device is characterized in that the base has a bottom surface and a magnetic support, the wiring channel is arranged on the bottom surface, the third magnetic body is installed on the magnetic support and forms the gap with the bottom surface, and the side of the gap has an opening, and the opening is used for the connecting cable to enter the gap.
As claimed 62 The temperature detection device is characterized in that the base has a cylindrical structure, the cylindrical structure has a cavity, the magnetic body is arranged in the cavity, the magnetic body support member is protruded on the inner wall of the cavity, the opening is formed between the magnetic body support members, and there is a gap between the magnetic body and the side wall of the base to allow the connecting cable to enter the opening and the gap.
As claimed 63 The temperature detection device is characterized in that the detection component has a fixed cover, the fixed cover is buckled on the magnetic body, and the fixed cover is fixedly connected to the base to place the third magnetic body on the base.
As claimed 64 The temperature detection device is characterized in that the detection component also includes an outer cover, which is buckled on the base and covers the third magnetic body and the fixed cover located in the base.