Wireless temperature sensor

Abstract

The utility model discloses a wireless temperature sensor. The wireless temperature sensor comprises a housing which is internally provided with an accommodating space; the power supply module is arranged in the accommodating space of the shell and can take electricity through magnetic induction; the printed circuit board is arranged in the accommodating space; the temperature sensing module is electrically connected with the printed circuit board; a micro-processing module electrically connected to the printed circuit board; the wireless communication module is electrically connected to the printed circuit board, and the wireless communication module is provided with a communication chip; the antenna element is used for transmitting and receiving wireless signals, the working communication frequency band of the antenna element is Sub-1G, and an inverted U-shaped structure is adopted. The wireless temperature sensor is small and exquisite in structure and higher in use performance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of low-voltage electrical technology, in particular to a wireless temperature sensor for the low-voltage electrical field. BACKGROUND

[0002] A wireless temperature sensing system is a device for measuring and transmitting temperature data, which mainly consists of a temperature sensor, a wireless communication module, a data processing unit, a power supply and other parts. Taking a specific use scenario as an example, in a typical wireless temperature sensing system using Sub-1G (Sub1G) communication technology, the temperature sensor needs to be as small as possible so that it can be installed on busbars or cables of different sizes. For example, the wireless temperature sensor will be installed in a cabinet, and the metal shell of the cabinet will affect the signal transmission of the antenna. Therefore, it is crucial to ensure the performance of the antenna. Although the size of the printed circuit board (PCB) is limited, enough clearance area needs to be reserved for the antenna to ensure good efficiency and gain. No elements are allowed in the clearance area, not even copper foil.

[0003] In order to solve the above problems, the person skilled in the art has developed a new design scheme to improve the use performance of the wireless temperature sensor. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to overcome the deficiencies in the prior art and provide a temperature sensor with a small structure and higher use performance.

[0005] According to the wireless temperature sensor provided by the embodiment of the present application, the wireless temperature sensor comprises a shell, an accommodation space is arranged in the shell, a power supply module is arranged in the accommodation space of the shell and can obtain power through magnetic induction, a printed circuit board is arranged in the accommodation space, a temperature sensing module is electrically connected to the printed circuit board, a micro-processing module is electrically connected to the printed circuit board, a wireless communication module is electrically connected to the printed circuit board, the wireless communication module has a communication chip, and an antenna element for transmitting and receiving wireless signals is arranged, the working communication frequency band of the antenna element is Sub-1G, and the antenna element adopts an inverted U-shaped structure.

[0006] According to an optional implementation manner of the present application, the antenna element comprises an antenna main body, a first connecting segment vertically extending along one end of the antenna main body, and a second connecting segment vertically extending along the other end of the antenna main body.

[0007] According to another optional implementation manner of the present application, the antenna main body has a predetermined lifting height from the plane of the printed circuit board.

[0008] According to another optional implementation of the present application, the antenna body is arranged in parallel above the printed circuit board to reduce interference between components on the printed circuit board plane.

[0009] According to another optional implementation of the present application, the shell comprises an upper shell and a lower shell, and the antenna body is accommodated in a receiving cavity formed between the upper shell and the printed circuit board.

[0010] According to another optional implementation of the present application, the antenna element is arranged at an end position of the printed circuit board.

[0011] According to another optional implementation of the present application, the antenna body, the first connecting section and the second connecting section are integrally formed.

[0012] According to another optional implementation of the present application, the first connecting section and the second connecting section are respectively electrically connected to the end position of the printed circuit board.

[0013] According to another optional implementation of the present application, the bottom of the lower shell is provided with a temperature detection port, which is diagonally positioned relative to the position of the antenna element.

[0014] According to another optional implementation of the present application, the micro processing module, the wireless communication module and the communication chip are integrated into one module. BRIEF DESCRIPTION OF DRAWINGS

[0015] The present application will be described in detail below with reference to the accompanying drawings and specific embodiments. Among them:

[0016] Figure 1 It is an exploded structural schematic diagram of a wireless temperature sensor according to an embodiment of the present application;

[0017] Figure 2 It is a schematic diagram of partial components in a wireless temperature sensor according to an embodiment of the present application.

[0018] LIST OF REFERENCE NUMBERS

[0019] Wireless temperature sensor 100

[0020] Shell 10

[0021] Power module 20

[0022] Printed circuit board 30

[0023] Temperature sensing module 40

[0024] Micro processing module 50

[0025] Wireless communication module 60

[0026] Communication chip 61

[0027] Antenna element 62

[0028] Antenna body 620

[0029] First connecting section 621

[0030] Second connecting section 622 DETAILED DESCRIPTION

[0031] In order to have a clearer understanding of the technical features, objectives and effects of the application, the specific embodiments of the present application will be described with reference to the accompanying drawings, in which the same reference numerals represent the same or similar components having the same function.

[0032] In this document, "illustrative" means "serving as an example, instance, or illustration," and should not necessarily be construed as preferred or advantageous over other examples. The as illustrated, embodiments should not be construed as preferred or advantageous over other examples.

[0033] For the sake of brevity, the drawings of the various aspects will not be described in detail. In the drawings, like reference numerals refer to like elements throughout the several views, unless context dictates otherwise. Additionally, the various aspects will not be described with reference to any particular standard, architecture, or programming language. Such descriptions and terminology should not be used to limit any aspect.

[0034] The terms and expressions used herein have the ordinary meaning as is accorded to such terms and expressions in the art, unless otherwise specifically defined herein. Any use of section headings is intended to aid reading the application and is not to be interpreted as limiting.

[0035] In this document, "upper", "lower", "front", "back", "left", "right", and the like, are used to denote relative positions in the drawings only and are not intended to denote absolute positions in the drawings.

[0036] In this document, "first", "second", and the like, merely denote differences among the components, and do not limit the importance and order of the components.

[0037] In this document, "parallel", "perpendicular", and the like, are not limited to strict mathematical and / or geometric meanings, and also include errors that can be understood by those skilled in the art and allowed in manufacturing or use.

[0038] The positional or location relationship indicated in the description of the present application is based on the positional or location relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The specific embodiments of the present application will be described in detail below in conjunction with the drawings.

[0039] Referring to Figure 1 shown, which discloses an exploded schematic view of a wireless temperature sensor according to an embodiment of the present application. Referring to Figure 2 , which is a partial structural schematic view of a wireless temperature sensor according to an embodiment of the present application, mainly showing a printed circuit board and components disposed thereon.

[0040] As Figure 1 , the wireless temperature sensor 100 of the present application comprises a housing 10, a power module 20, a printed circuit board 30, a temperature sensing module 40, a micro-processing module 50, and a wireless communication module 60 having a communication chip 61 and an antenna element 62. Specifically, the housing 10 has a predetermined accommodating space inside. The power module 20 is disposed in the above-mentioned accommodating space of the housing and can take power by magnetic induction, and only the coil skeleton and other components are shown in the figure, and the relevant coil is hidden. The printed circuit board 30 is disposed in the accommodating space. The temperature sensing module 40 is electrically connected to the printed circuit board. The micro-processing module 50 is electrically connected to the printed circuit board. The wireless communication module 60 is electrically connected to the printed circuit board.

[0041] Referring to 2, the antenna element 62 is used for transmitting and receiving wireless signals, and the working communication frequency band of the antenna element is Sub-1G, and the structure of the antenna element is inverted U-shaped. Through the above design, the antenna element can still retain sufficient clearance area on the printed circuit board with limited installation area, and the shell will not affect the signal transmission of the antenna, so as to ensure that the performance of the antenna element is more stable and reliable.

[0042] It is worth noting that according to a specific embodiment of the present application, the wireless temperature sensor of the present application uses a sub-1GHz (Sub1G) antenna element, and the antenna element 62 comprises: an antenna body 620, a first connecting segment 621, and a second connecting segment 622, the first connecting segment 621 is formed by extending vertically along one of the end portions of the antenna body 620; and the second connecting segment 622 is formed by extending vertically along the other end portion of the antenna body 620. In particular, according to a specific embodiment of the present application, the antenna body 620 has a predetermined lifting height from the plane of the printed circuit board 30.

[0043] According to an optional embodiment of the present application, the antenna body 620 is arranged in parallel above the printed circuit board 30 to reduce the interference between components on the printed circuit board 30 and save the installation space of components inside the shell.

[0044] Further, the shell 10 comprises an upper shell and a lower shell, and the antenna body 620 is arranged in the accommodating cavity formed between the upper shell and the printed circuit board 30. It is worth pointing out that, since the shell has a detachable structure, the maintenance personnel can also flexibly open and close the shell of the wireless temperature sensor according to the actual needs of different scenes, easily check the shape of the antenna at any time, and have stronger operability in the subsequent product maintenance process.

[0045] It is worth pointing out that, according to a specific embodiment of the present application, the antenna element 62 is arranged at one end position of the printed circuit board 30. It can be understood that, according to a specific embodiment of the present application, the antenna body 620, the first connecting section 621 and the second connecting section 622 can have an integrally formed structure. According to an optional embodiment of the present application, the first connecting section 621 and the second connecting section 622 are respectively electrically connected to two end positions of the printed circuit board 30.

[0046] According to a specific embodiment of the present application, the bottom of the lower shell 102 is provided with a temperature detection port, and the position of the temperature detection port is diagonally opposite to the position of the antenna element 62. Optionally, the temperature sensing module 40 comprises a metal head arranged outside the circuit board, and the NTC thermistor inside the metal head changes the resistance value with the temperature. The two wires are welded to the printed circuit board, and then the resistance value is transmitted to the processing module. In order to further save space, the micro processing module 50, the wireless communication module 60 and the communication chip 61 can be integrated into one whole module.

[0047] Through the above special design, since the size of the antenna is smaller, the occupied space of the printed circuit board is effectively saved, and the antenna structure adopted by the present application can lift the antenna body away from the plane of the printed circuit board, which effectively utilizes the space distance between the printed circuit board assembly and the upper shell.

[0048] It is worth pointing out that, lifting the antenna body away from the plane of the printed circuit board is equivalent to raising the reference plane of the antenna, thereby reducing the interference of components on the printed circuit board. The antenna with such a special structure not only can ensure the communication performance, but also can improve the space utilization rate of the printed circuit board. Since the size of the printed circuit board is further reduced, the production cost of the wireless temperature sensor can be further saved and the reliability of the product is improved.

[0049] It can be understood that the wireless temperature sensor of the present application is small in size and can be installed on busbars and cables of different sizes to realize wireless temperature measurement, so it has wide applicability.

[0050] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises a" does not, without more constraints, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0051] Finally, it should be noted that the above is only a preferred embodiment of the present application, which is only used to illustrate the technical solutions of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A wireless temperature sensor (100), characterized in that The utility model relates to a temperature detection device, which comprises: a shell (10) internally provided with a containing space; a power module (20) arranged in the containing space of the shell and capable of taking power through magnetic induction; a printed circuit board (30) arranged in the containing space; a temperature sensing module (40) electrically connected to the printed circuit board; a micro-processing module (50) electrically connected to the printed circuit board; and a wireless communication module (60) electrically connected to the printed circuit board, the wireless communication module having a communication chip (61) and an antenna element (62) for transmitting and receiving wireless signals, the antenna element operating in a Sub-1G communication frequency band and adopting an inverted U-shaped structure. The antenna element (62) comprises:

2. The wireless temperature sensor of claim 1, wherein, an antenna main body (620), a first connecting segment (621) vertically extending along one end of the antenna main body (620), and a second connecting segment (622) vertically extending along the other end of the antenna main body (620). The antenna main body (620) has a predetermined lifting height from the plane of the printed circuit board (30).

3. The wireless temperature sensor of claim 2, wherein, The antenna main body (620) is arranged in parallel above the printed circuit board (30) to reduce interference between components on the plane of the printed circuit board (30).

4. The wireless temperature sensor of claim 3, wherein, The shell (10) comprises an upper shell and a lower shell, and the antenna main body (620) is arranged in a receiving cavity formed between the upper shell and the printed circuit board (30).

5. The wireless temperature sensor of claim 2, wherein, The antenna element (62) is arranged at one end of the printed circuit board (30).

6. The wireless temperature sensor of claim 1, wherein, The antenna main body (620), the first connecting segment (621) and the second connecting segment (622) can adopt an integrated structure.

7. The wireless temperature sensor of claim 2, wherein, The first connecting segment (621) and the second connecting segment (622) are electrically connected to two end positions of the printed circuit board (30), respectively.

8. The wireless temperature sensor of claim 2, wherein, The bottom of the lower shell is provided with a temperature detection port, which is diagonally arranged relative to the position of the antenna element (62).

9. The wireless temperature sensor of claim 5, wherein, The micro-processing module (50), the wireless communication module (60) and the communication chip (61) are integrated into a whole module.

10. The wireless temperature sensor of claim 1, wherein, ​

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