CN219348009U

CN219348009U - Temperature sensor

Info

Publication number: CN219348009U
Application number: CN202223186529.6U
Authority: CN
Inventors: 张晟; 刘泽伟; 闵令宝; 李�浩; 王澜锦; 王会锦
Original assignee: Siemens Ltd China
Current assignee: Siemens Ltd China
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-07-14
Anticipated expiration: 2032-11-30

Abstract

The utility model relates to a temperature sensor, comprising: a sensor body, one or more cables, and one or more temperature probe assemblies, the sensor body comprising: the sensor comprises a shell, a power taking coil, a circuit board and an antenna, wherein the power taking coil, the circuit board and the antenna are contained in the shell; the temperature probe assembly includes: the temperature probe is fixed on the clamp, the clamp is used for fixing the temperature probe assembly on a measurement target, the temperature probe contacts the measurement target to collect signals representing the temperature of the measurement target, and the clamp is connected with the cable so that the collected signals are transmitted to the sensor main body through the cable. The temperature sensor provided by the utility model is provided with the probe compatible with various measurement targets, has a friendly mechanical interface, and has higher measurement accuracy; having multiple channels can be used for multiple measurement points, thereby reducing the average cost of a single measurement point.

Description

Temperature sensor

Technical Field

The present disclosure relates generally to the field of switchgear technology, and more particularly, to a temperature sensor.

Background

Temperature is an important safety factor for a switchgear or other electrical cabinet. Overload due to grid faults, poor mechanical connection of the busbar, the cable, and changes in the contact state of the switchgear can all cause abnormal increases in temperature, which can be observed by temperature sensors. On the other hand, a "smart grid" has been proposed for several years, and a smart device with a sensing system of thermal, electrical and even mechanical characteristics is critical to the realization that a "smart grid" provides sufficient data.

Some wireless temperature sensor products currently on the market can generally be divided into two categories.

Scheme one, take embedded temperature probe's sensor.

Radio Frequency Identification (RFID), surface Acoustic Wave (SAW) and induction (CT) power acquisition are mostly adopted to realize wireless power supply and communication, and an embedded temperature probe is used, and one sensor is used for one measuring point.

This solution is suitable for single temperature measurement point applications, and has the following problems.

The sensors are located at measurement points, which increases the demands on the chips on the PCB for high temperature applications.

One probe cannot meet the use of all busbar, cable, bolt connection points etc. and thus a separate sensor is required, which means higher costs and it is difficult to install the entire sensor block in a place where space is very limited due to its large size.

Such a sensor is not suitable for the case with a plurality of measuring points, considering the cost problem.

Scheme II, sensor with external temperature probe.

In contrast to the first scheme, the second scheme may employ a wired power supply and communication scheme in addition to wireless power supply and communication.

In this solution, there is a great margin for optimizing the design of the temperature probe.

Disclosure of Invention

The following presents a simplified summary of the utility model in order to provide a basic understanding of some aspects of the utility model. It should be understood that this summary is not an exhaustive overview of the utility model. It is not intended to identify key or critical elements of the utility model or to delineate the scope of the utility model. Its purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is discussed later.

In view of this, the present utility model provides a temperature sensor with a novel external sensor probe, which can provide a plurality of channels for temperature measurement, and the temperature measurement probe has corresponding clips, so that the temperature measurement probe is compatible with measurement cases such as busbar, cable, bolt line nose, etc.

According to one aspect of the present disclosure, there is provided a temperature sensor comprising: a sensor body, one or more cables, and one or more temperature probe assemblies, the sensor body comprising: a shell, a power taking coil, a circuit board and an antenna which are accommodated in the shell,

the power take-off coil is used for supplying power to the temperature sensor,

the circuit board processes the signals acquired by the temperature measuring probe assembly to obtain the temperature of a measurement target;

the antenna is used for receiving the instruction from the outside of the temperature sensor and sending a signal to the outside,

the sensor main body is connected with one end of each of the cables, and the other end of the cable is connected with a temperature measuring probe assembly;

the temperature probe assembly includes: the temperature probe is fixed on the clamp, the clamp is used for fixing the temperature probe assembly on a measurement target, the temperature probe contacts the measurement target to collect signals representing the temperature of the measurement target, and the clamp is connected with the cable, so that the collected signals are transmitted to the sensor main body through the cable.

Optionally, in one example of the above aspect, the clip includes at least one of a busbar clip, a cable clip, and a bolt nose.

Optionally, in one example of the above aspect, the number of cables is any of one to six.

Optionally, in one example of the above aspect, the temperature probe includes: the probe comprises a probe body, a rubber ring and a clamp spring.

The temperature sensor provided by the utility model is provided with the probe compatible with various measurement targets, has a friendly mechanical interface, and has higher measurement accuracy; having multiple channels can be used for multiple measurement points, thereby reducing the average cost of a single measurement point.

Drawings

The above and other objects, features and advantages of the present utility model will be more readily understood by reference to the following description of the embodiments of the present utility model taken in conjunction with the accompanying drawings. The components in the figures are only to illustrate the principles of the present utility model. In the drawings, the same or similar technical features or components will be denoted by the same or similar reference numerals. In the accompanying drawings:

fig. 1 is a schematic structural view of a temperature sensor according to an embodiment of the present utility model.

FIG. 2A is a schematic view of a clip included in a temperature probe assembly in a temperature sensor according to the present utility model;

FIG. 2B is a schematic diagram of a temperature probe included in a temperature probe assembly in a temperature sensor according to the present utility model;

FIG. 2C is a schematic diagram showing the temperature probe secured to the clamp;

fig. 3 is a schematic structural view of the temperature probe.

Wherein, the reference numerals are as follows:

10: temperature sensor 102: sensor body

104: a cable 106: temperature measurement probe assembly

1022: housing 1024: electric taking coil

1026: circuit board 1028: antenna

1062: clip 1064: temperature measuring probe

10642: probe body 10644: rubber ring

10646: clamp spring

Detailed Description

The subject matter described herein will now be discussed with reference to example embodiments. It should be appreciated that these embodiments are discussed only to enable a person skilled in the art to better understand and thereby practice the subject matter described herein, and are not limiting of the scope, applicability, or examples set forth in the claims. Changes may be made in the function and arrangement of elements discussed without departing from the scope of the disclosure. Various examples may omit, replace, or add various procedures or components as desired. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. In addition, features described with respect to some examples may be combined in other examples as well.

As used herein, the term "comprising" and variations thereof mean open-ended terms, meaning "including, but not limited to. The term "based on" means "based at least in part on". The terms "one embodiment" and "an embodiment" mean "at least one embodiment. The term "another embodiment" means "at least one other embodiment". The terms "first," "second," and the like, may refer to different or the same object. Other definitions, whether explicit or implicit, may be included below. Unless the context clearly indicates otherwise, the definition of a term is consistent throughout this specification.

Therefore, the utility model provides a temperature sensor with a novel external sensor probe, which can provide a plurality of channels for temperature measurement, and the temperature measurement probe is provided with corresponding clamps, so that the temperature sensor is compatible with measurement examples such as a busbar, a cable, a bolt wire nose and the like.

Fig. 1 is a schematic structural diagram of a temperature sensor 10 according to one embodiment of the present utility model.

As shown in fig. 1, the temperature sensor 10 includes: a sensor body 102, one or more cables 104, and one or more temperature probe assemblies 106.

The sensor body 102 includes: a housing 1022 and an electrical pickup coil 1024, a circuit board 1026 and an antenna 1028 housed in the housing 1022.

Wherein the power take-off coil 1024 is used to power the temperature sensor 10.

The circuit board 1026 includes signal processing circuitry (not shown) that can process signals acquired by the temperature probe assembly 106 to obtain the temperature of the measurement target.

The antenna 1028 is used to receive an instruction from the outside of the temperature sensor 10 and to transmit a signal to the outside, for example, to transmit a measured temperature signal to the outside.

The sensor body 102 is connected to one end of each of the cables 104, and the other end of the cable 104 is connected to a temperature probe assembly 106.

The cable 104 is used to transmit analog signals acquired by the temperature probe assembly 106 from the temperature probe assembly 106 to the sensor body 102.

According to the temperature measuring sensor, the sensor main body can be connected with a plurality of cables, each cable is connected with one temperature probe, and different temperature measuring probe assemblies are selected to be applicable to different types of measuring targets.

Specifically, the temperature probe assembly 106 includes a clip 1062 as shown in fig. 2A and a temperature probe 1064 as shown in fig. 2B, and the temperature probe 1064 is fixed to the clip 1062 as shown in fig. 2C. The clamp 1062 is used to secure the temperature probe assembly 106 to the measurement target such that the temperature probe 1064 contacts the measurement target to collect a signal indicative of the temperature of the measurement target. The catch 1062 is connected to the cable 104 so that the acquired signal can be transmitted to the sensor body 102 via the cable 104.

Two types of clips, a busbar clip and a cable clip, are shown in fig. 2 to illustrate the connection of the temperature probe and the clip, and the clip 1062 may also be a bolt wire nose or the like as shown in fig. 1. The measurement target may be any common type of object in an application environment, such as a busbar, cable, etc., for which a temperature needs to be measured. According to the different measuring targets, a proper clip style is selected, so that the temperature sensor is fixed on the measuring target to measure the temperature of the measuring target.

In one particular example, a temperature sensor according to the present disclosure may provide up to six temperature probes to measure different types of measurement targets.

The temperature probe 1064 is of modular design, can be adapted to a variety of sizes and types of clips, and can be easily and quickly mounted to the clip.

Specifically, the temperature probe 1064 includes a probe body 10642, a rubber ring 10644, and a clamp spring 10646. The probe body 10642 is a metal hollow cylinder, and the probe body 10642 includes a temperature measuring chip (not shown) therein. The rubber ring 10644 is used for providing stable and accurate contact force between the temperature probe 1064 and the measurement target. The circlip 10646 is used to define the position of the temperature probe 1064.

When the temperature probe 1064 is mounted on the clip 1062, only the temperature probe needs to be inserted into the round hole on the clip, the rubber ring 10644 is pressed, and then the opening on the clamp spring 10646 is penetrated to fix the position of the temperature probe 1064.

When using a temperature sensor to measure temperature, the clamp is mounted on a busbar or cable, and the stroke of the probe is controlled to an accurate position to be measured due to the special design of the clamp structure, regardless of the size and type of the clamp. Accurate stroke means accurate contact force, thus generating accurate thermal contact surface resistance, and thus high-accuracy temperature measurement can be achieved.

The temperature sensor according to the present utility model can provide a plurality of measurement paths, for example, up to 6 paths, so that a plurality of measurement points can be provided in a narrow space, and since a plurality of temperature probes share one sensor body, the cost per measurement point is reduced.

The temperature sensor according to the present utility model provides a modular temperature probe providing a uniform mechanical interface between the probe and the clip so that one type of probe can be used with a variety of different sizes and types of clips, thereby increasing flexibility of selection. The simple round hole interface enables the temperature measuring probe to be applied to different clips, so that the temperature measuring probe is suitable for scenes of different measuring targets. That is, according to different measuring targets, a proper clamp and a temperature measuring probe connected with the clamp can be selected for temperature measurement.

The temperature sensor provided by the utility model adopts the external temperature measuring probe, and has accurate and constant contact force between the probe and the surface of a measurement target, and the accurate contact force can generate accurate thermal surface resistance. By compensation based on the thermal model of the sensing system, a very high accuracy of the temperature measurement can be achieved, which will not be described in detail here.

Not all of the elements in the above-described block diagrams are necessary, and some of the elements may be omitted according to actual needs. The apparatus structures described in the foregoing embodiments may be physical structures or logical structures, that is, some units may be implemented by the same physical entity, or some units may be implemented by a plurality of physical entities respectively, or may be implemented jointly by some components in a plurality of independent devices.

The previous description of the disclosure is provided to enable any person skilled in the art to make or use the disclosure. Various modifications to the disclosure will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. A temperature sensor (10), characterized by comprising: a sensor body (102), one or more cables (104) and one or more temperature probe assemblies (106),

the sensor body (102) comprises: a housing (1022) and an electrical pickup coil (1024), a circuit board (1026) and an antenna (1028) housed in the housing (1022),

the power take-off coil (1024) is used for supplying power to the temperature sensor (10),

the circuit board (1026) processes the signals collected by the temperature measurement probe assembly (106) to obtain the temperature of the measurement target;

the antenna (1028) is used for receiving the instruction from the outside of the temperature sensor (10) and sending a signal to the outside,

the sensor main body (102) is connected with one end of each of the cables (104), and the other end of the cable (104) is connected with a temperature measuring probe assembly (106);

the temperature measurement probe assembly (106) includes: the device comprises a clamp (1062) and a temperature measuring probe (1064), wherein the temperature measuring probe (1064) is fixed on the clamp (1062), the clamp (1062) is used for fixing a temperature measuring probe assembly (106) on a measuring target, the temperature measuring probe (1064) contacts the measuring target to collect signals representing the temperature of the measuring target, and the clamp (1062) is connected with a cable (104) so that the collected signals are transmitted to a sensor main body (102) through the cable (104).

2. The temperature sensor (10) of claim 1, wherein the clip (1062) includes at least one of a busbar clip, a cable clip, and a bolt wire nose.

3. The temperature sensor (10) of claim 2, wherein the number of cables (104) is any of one to six.

4. A temperature sensor (10) according to any one of claims 1-3, wherein the temperature probe (1064) comprises: the probe comprises a probe body (10642), a rubber ring (10644) and a clamp spring (10646).