Split thermometer

Abstract

The utility model provides a split thermometer, including a main body and a temperature measuring head; the main body includes a main shell and a circuit mainboard and an antenna contained in the main shell, and the antenna is electrically connected to the circuit mainboard; the temperature measuring head includes a split shell, a temperature sensor and an electronic tag, and the temperature sensor is installed in the split shell; one end of the split shell is detachably connected to one end of the main shell, one end of the temperature sensor is used to be electrically connected to the circuit mainboard, and the other end of the temperature sensor extends out of the other end of the split shell for measuring temperature; wherein the electronic tag is integrated with calibration compensation information of the temperature sensor, and the antenna is used to approach the electronic tag and obtain the calibration compensation information of the temperature sensor, and transmit the calibration compensation information of the temperature sensor to the circuit mainboard. The split thermometer of this solution does not need manual input for compensation debugging, only requires the antenna and the electronic tag to cooperate with each other, is easy to operate, and is conducive to being widely used in split thermometers.

Description

Technical Field

[0001] The utility model belongs to the technical field of thermometers, and in particular relates to a split thermometer. Background Art

[0002] The electronic temperature measuring device itself displays the temperature value by comparing the resistance value obtained by the system with the resistance-temperature relationship table, that is, the resistance value actually consists of two parts: the mainboard resistance and the temperature sensor resistance. In traditional thermometers, since the resistance value of each thermistor is inconsistent, it is impossible to achieve a truly split and replaceable temperature measuring head. There is a method of manually inputting compensation values ​​in the prior art, but this method has the following problems: 1. It is not suitable for actual use environment; 2. It is cumbersome to operate. Utility Model Content

[0003] The utility model aims to provide a split-type thermometer, which is used to update the resistance value of the temperature measuring head split in real time when different temperature measuring head splits are replaced.

[0004] The utility model is implemented as follows: a split thermometer comprises a main body and a temperature measuring head split, the main body comprises a main shell, a circuit main board contained in the main shell, and an antenna, the antenna is electrically connected to the circuit main board; the temperature measuring head split comprises a sub-shell, a temperature sensor and an electronic tag, the temperature sensor is installed in the sub-shell; one end of the sub-shell is detachably connected to one end of the main shell, one end of the temperature sensor is used to be electrically connected to the circuit main board, and the other end of the temperature sensor extends out of the other end of the sub-shell for measuring temperature; wherein the electronic tag is integrated with the calibration compensation information of the temperature sensor, the antenna is used to approach the electronic tag and obtain the calibration compensation information of the temperature sensor, and transmit the calibration compensation information of the temperature sensor to the circuit main board.

[0005] Optionally, the electronic tag is attached to the surface of the sub-shell.

[0006] Optionally, the temperature measuring head split also includes a detachable packaging bag, and the electronic tag is affixed to the outer surface of the packaging bag.

[0007] Optionally, the host also includes a contact probe, and the temperature measuring head split also includes a temperature measuring circuit board, one end of the contact probe is electrically connected to the circuit main board, and the other end of the contact probe is elastically connected to the temperature measuring circuit board, and the temperature measuring circuit board is electrically connected to the temperature sensor.

[0008] Optionally, the host also includes an elastic button, and the temperature measuring head split also includes a cover plate, the elastic button is connected to the main shell, the cover plate is connected to the sub-shell, the elastic button is provided with a first clamping portion, and the cover plate is provided with a second clamping portion, and the first clamping portion and the second clamping portion are detachably connected.

[0009] Optionally, the main shell includes a front shell and a rear shell, an installation cavity for accommodating the circuit main board and the antenna is formed between the front shell and the rear shell, a display screen is provided on the front shell, and an installation groove compatible with the circuit main board and the antenna is provided on the rear shell.

[0010] Optionally, the host further includes an operation button, the elastic button is arranged at one end of the installation cavity, and the operation button is arranged at the other side of the installation cavity.

[0011] Optionally, the host further includes a buzzer for alarming against high temperature, and the buzzer is disposed in the main housing.

[0012] Optionally, the host further includes a battery for charging the circuit board, and the battery is disposed in the main housing.

[0013] The beneficial effects of the utility model are:

[0014] This solution uses a specific electronic tag to represent the calibration compensation information of the temperature sensor according to the characteristics of different temperature sensors. An antenna is installed in the host, and the electronic tags of different temperature measuring head splits are identified by the antenna, thereby obtaining the actual resistance value of the temperature sensor in the corresponding temperature measuring head split, so as to accurately measure the temperature. The split thermometer of this solution does not require manual input for compensation debugging, but only requires the cooperation of the antenna and the electronic tag. It is easy to operate and is conducive to its wide application in split thermometers. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of a partial explosion of a split-type thermometer;

[0016] Figure 2 This is an explosion diagram of the host;

[0017] Figure 3 This is an exploded diagram of the temperature measuring head split;

[0018] Figure 4 It is a schematic diagram of the combination of the elastic button and the cover plate.

[0019] Description of reference numerals:

[0020] 100, host; 101, circuit board; 102, antenna; 103, front shell; 104, back shell; 105, contact probe; 106, elastic button; 1061, first clamping part; 107, display screen; 108, lens; 109, operation button; 110, buzzer; 111, battery; 112, battery cover; 200, temperature measuring head split; 201, temperature sensor; 202, temperature measuring circuit board; 203, sub-shell; 204, cover plate; 2041, second clamping part. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0022] In the description of the present utility model, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a communication between the two components. For ordinary technicians in this field, the specific meanings of the terms in the present utility model can be understood according to specific circumstances.

[0023] See also Figure 1-3The utility model discloses a split thermometer, comprising a host 100 and a temperature measuring head split 200; the host 100 comprises a main housing, a circuit board 101 and an antenna 102 contained in the main housing, and the antenna 102 is electrically connected to the circuit board 101; the temperature measuring head split 200 comprises a sub-housing 203, a temperature sensor 201 and an electronic tag (not shown), and the temperature sensor 201 is installed in the sub-housing 203; one end of the sub-housing 203 is detachably connected to one end of the main housing, one end of the temperature sensor 201 is used to be electrically connected to the circuit board 101, and the other end of the temperature sensor 201 extends out of the other end of the sub-housing 203 for measuring temperature; wherein the electronic tag is integrated with calibration compensation information of the temperature sensor 201, and the antenna 102 is used to approach the electronic tag and obtain the calibration compensation information of the temperature sensor 201, and transmit the calibration compensation information of the temperature sensor 201 to the circuit board 101. Specifically, the antenna used in this solution is an NFC antenna, and the electronic tag is an NFC tag.

[0024] The temperature sensor's resistance-temperature conversion table in different temperature ranges (called the RT characteristic table) has different B values ​​(material constants of the temperature sensor) due to the characteristics of the temperature sensor itself. Each batch of temperature sensors has a different B value, so the resistance compensation of each batch is determined by determining the B value of the batch and re-deriving a new RT characteristic table according to this B value. The temperature sensors of the same batch are calibrated based on the RT characteristic table and the final displayed temperature is measured.

[0025] The temperature measurement principle of the electronic thermometer is to obtain the temperature corresponding to the actual resistance value through the RT table. However, the RT table of each thermistor with a different B value is different. The B values ​​of thermistors in the same production batch are basically the same, but the B values ​​of thermistors in different batches may differ greatly. And this difference is basically within 100 above and below the standard value. This solution stores the RT tables corresponding to the B values ​​within the range into the storage space of the circuit main board 101, and each RT table is assigned an identification code. The NFC tag on the temperature measuring head split 200 gives an identification code and a compensation value of the temperature sensor 201 of the temperature measuring head split 200. After the NFC antenna 102 detects the NFC tag, it automatically switches to the RT table corresponding to the identification code, and automatically updates the compensation value to the value set by the temperature measuring head, thereby achieving accurate temperature measurement.

[0026] This solution represents the calibration compensation information of the temperature sensor 201 with a specific electronic tag according to the characteristics of different temperature sensors 201, installs an antenna 102 in the host 100, and identifies the electronic tags of different temperature measuring head splits 200 through the antenna 102, thereby obtaining the actual resistance value of the temperature sensor 201 in the corresponding temperature measuring head split 200, so as to accurately measure the temperature. The split thermometer of this solution does not need manual input for compensation debugging, but only requires the antenna 102 and the electronic tag to cooperate with each other, which is easy to operate and is conducive to being widely used in split thermometers.

[0027] In this embodiment, the electronic tag can be directly attached to the surface of the sub-shell 203 or to the outer surface of the packaging bag of the temperature measuring head split 200. Since the electronic tag only needs to read and match information when the temperature measuring head split 200 is replaced, the electronic tag can be set on the packaging bag or the surface of the sub-shell 203, as long as it is convenient for the antenna 102 to read.

[0028] In this embodiment, the host 100 further includes a contact probe 105, and the temperature measuring head split body 200 further includes a temperature measuring circuit board 202. One end of the contact probe 105 is electrically connected to the circuit main board 101, and the other end of the contact probe 105 is elastically connected to the temperature measuring circuit board 202, and the temperature measuring circuit board 202 is electrically connected to the temperature sensor 201. It can be understood that when the sub-housing 203 is inserted into the main housing, the other end of the contact probe 105 is elastically connected to the temperature measuring circuit board 202 in a contracted state, so that a more stable contact with the contact point on the temperature measuring circuit board 202 can be achieved.

[0029] See also Figure 4 The host 100 further includes an elastic button 106, and the temperature measuring head split 200 further includes a cover plate 204. The elastic button 106 is connected to the main housing, and the cover plate 204 is connected to the sub-housing 203. The elastic button 106 is provided with a first clamping portion 1061, and the cover plate 204 is provided with a second clamping portion 2041. The first clamping portion 1061 and the second clamping portion 2041 are detachably connected. The elastic button 106 presses the first clamping portion 1061, and the second clamping portion 2041 can be inserted into or pulled out of the first clamping portion 1061, so that the sub-housing 203 can be inserted into or pulled out of the main housing.

[0030] In this embodiment, the main housing includes a front housing 103 and a rear housing 104. A mounting cavity for accommodating a circuit mainboard 101 and an antenna 102 is formed between the front housing 103 and the rear housing 104. A display screen 107 is provided on the front housing 103. The display screen 107 is used to display the temperature. A transparent lens 108 is also provided on the outer surface of the display screen 107 to protect the display screen 107. A mounting groove adapted to the circuit mainboard 101 and the antenna 102 is provided on the rear housing 104.

[0031] In this embodiment, the host 100 further includes an operation button 109, a buzzer 110 and a battery 111. The elastic button 106 is disposed at one end of the mounting cavity, and the operation button 109 is disposed at the other side of the mounting cavity. The buzzer 110 is used to alarm for high temperature, and the buzzer 110 is disposed in the main housing. The battery 111 is used to charge the circuit board 101, and the battery 111 is disposed in the main housing. A battery cover 112 for mounting the battery 111 is disposed on the rear housing 104.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A split thermometer, characterized in that: include: A host, the host comprising a main housing, a circuit mainboard and an antenna contained in the main housing, the antenna being electrically connected to the circuit mainboard; The temperature measuring head is split, and the temperature measuring head split includes a sub-shell, a temperature sensor and an electronic tag, and the temperature sensor is installed in the sub-shell; one end of the sub-shell is detachably connected to one end of the main shell, one end of the temperature sensor is used to be electrically connected to the circuit main board, and the other end of the temperature sensor extends out of the other end of the sub-shell for measuring temperature; wherein the electronic tag is integrated with the calibration compensation information of the temperature sensor, and the antenna is used to approach the electronic tag and obtain the calibration compensation information of the temperature sensor, and transmit the calibration compensation information of the temperature sensor to the circuit main board.

2. The split-type thermometer according to claim 1, characterized in that: The calibration compensation information built into the electronic tag is a calling code corresponding to the temperature sensor, the calling code is used to correspond to the RT characteristic table of the temperature sensor, the circuit main board stores the RT characteristic table of the temperature sensor with different B values, and the antenna is used to obtain the calling code and update the corresponding RT characteristic table of the temperature sensor.

3. The split-type thermometer according to claim 1, characterized in that: The electronic tag is attached to the surface of the sub-shell.

4. The split-type thermometer according to claim 1, characterized in that: The temperature measuring head split also includes a detachable packaging bag, and the electronic label is attached to the outer surface of the packaging bag.

5. The split-type thermometer according to claim 1, characterized in that: The host also includes a contact probe, and the temperature measuring head split also includes a temperature measuring circuit board. One end of the contact probe is electrically connected to the circuit main board, and the other end of the contact probe is elastically connected to the temperature measuring circuit board. The temperature measuring circuit board is electrically connected to the temperature sensor.

6. The split-type thermometer according to claim 1, characterized in that: The host also includes an elastic button, and the temperature measuring head split also includes a cover plate. The elastic button is connected to the main shell, and the cover plate is connected to the sub-shell. The elastic button is provided with a first clamping portion, and the cover plate is provided with a second clamping portion. The first clamping portion and the second clamping portion are detachably connected.

7. The split-type thermometer according to claim 6, characterized in that: The main shell includes a front shell and a rear shell, and a mounting cavity for accommodating the circuit mainboard and the antenna is formed between the front shell and the rear shell. A display screen is provided on the front shell, and a mounting groove compatible with the circuit mainboard and the antenna is provided on the rear shell.

8. The split-type thermometer according to claim 7, characterized in that: The host further comprises an operation button, wherein the elastic button is arranged at one end of the installation cavity, and the operation button is arranged at the other side of the installation cavity.

9. The split-type thermometer according to claim 1, characterized in that: The host also includes a buzzer for alarming high temperature, and the buzzer is arranged in the main shell.

10. The split-type thermometer according to claim 1, characterized in that: The host also includes a battery for charging the circuit mainboard, and the battery is arranged in the main shell.

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