Temperature sensor for contactless temperature measurement

Abstract

The utility model relates to temperature detection equipment technical field, concretely is the temperature sensor for non -contact temperature measurement, including infrared detection probe, is used for gathering the infrared radiation signal of measured object, signal processing module is connected with infrared detection probe electricity, is used for converting infrared radiation signal into temperature electric signal, signal transmission subassembly, one end is connected with signal processing module through connector component, other end is connected with infrared detection probe, is used for transmission temperature electric signal. The temperature sensor for non -contact temperature measurement in this, gather infrared radiation signal through infrared detection probe, convert into temperature electric signal through signal processing module, avoid direct contact with measured object, can effectively avoid the interference to measured object temperature field, adapt high temperature, easy to wear, high cleanliness etc. Contact type measurement difficult to cover the scene, broaden sensor application range.

Description

Technical Field

[0001] This utility model relates to the field of temperature detection equipment technology, and more specifically, to a temperature sensor for non-contact temperature measurement. Background Technology

[0002] Accurate temperature measurement is a core requirement in industrial production control, equipment condition maintenance, and electronic device reliability testing. Compared to contact temperature measurement methods, non-contact temperature measurement effectively avoids interference with the temperature field of the measured object because it does not require direct contact. It is also suitable for scenarios where contact measurement is difficult to apply, such as high-temperature, wear-prone, and high-cleanliness environments. Therefore, its application is becoming increasingly widespread in metallurgy, power equipment, and new energy batteries.

[0003] However, existing non-contact temperature sensors still have many shortcomings in practical applications: First, their installation and adaptation flexibility is poor. Most sensors are mounted on fixed brackets, making it difficult to easily adjust the distance between the infrared detection probe and the measured object. Since the accuracy of infrared radiation signal acquisition is directly related to the probe's distance measurement, the fixed installation structure limits the sensor's applicability to specific distance measurement scenarios. Second, signal transmission stability is insufficient. Some sensors' signal transmission cables lack high-temperature resistance and anti-interference design. In environments such as industrial equipment rooms and high-temperature production workshops, the cable insulation layer is prone to softening and aging due to high temperatures, and the shielding layer's anti-electromagnetic interference capability is weakened, leading to temperature signal distortion. Third, connection and sealing performance is inadequate. The connectors of conventional sensors are mostly ordinary open interfaces. In humid and dusty working environments, moisture and particulate matter can easily penetrate the interface, causing poor contact, short circuits, and other faults, reducing the sensor's working stability and lifespan. In addition, the focusing structure design of some infrared detection probes is simple, resulting in limited focusing effect on infrared radiation signals. In long-distance measurement scenarios, the signal acquisition strength is insufficient, making it difficult to guarantee measurement accuracy. Utility Model Content

[0004] The purpose of this invention is to provide a temperature sensor for non-contact temperature measurement, in order to solve the problems mentioned in the background art, such as poor installation and adaptation flexibility, the fact that most sensor installation structures are in the form of fixed brackets, which makes it impossible to conveniently adjust the distance between the infrared detection probe and the measured object, and the fact that the acquisition accuracy of infrared radiation signals is directly related to the probe distance measurement, and the fixed installation structure causes the sensor to be only suitable for specific distance measurement scenarios, thus limiting its applicable range.

[0005] To achieve the above objectives, this utility model provides a temperature sensor for non-contact temperature measurement, including an infrared detection probe for acquiring infrared radiation signals from the object being measured. The signal processing module is electrically connected to the infrared detection probe and is used to convert the infrared radiation signal into a temperature electrical signal. The signal transmission component is connected to the signal processing module at one end via a connector assembly and to the infrared detection probe at the other end, and is used to transmit the temperature electrical signal. An adapter is installed and fitted onto the connection area between the infrared detection probe and the signal transmission component to fix the temperature sensor onto an external bracket.

[0006] Preferably, the infrared detection probe includes an optical focusing component and an infrared sensitive element; the optical focusing component is used to focus the infrared radiation of the object being measured onto the infrared sensitive element.

[0007] Preferably, the optical focusing component is a parabolic focusing mirror or a Fresnel lens.

[0008] Preferably, the signal transmission component includes a shielded cable, the outer surface of which is covered with a high-temperature resistant insulating layer.

[0009] Preferably, the connector assembly is a waterproof electrical connector, and a sealing rubber ring is provided at the interface of the electrical connector.

[0010] Preferably, the mounting adapter includes a threaded rod and a clamping plate; one end of the threaded rod is threadedly connected to the infrared detection probe, the threaded rod passes through the mounting hole of the pre-set vertical support plate, and is clamped on the support plate by the clamping plate.

[0011] Preferably, the clamping plate has a threaded hole in the middle, and the clamping plate is threadedly connected to the threaded rod, which facilitates the adjustment of the front and rear positions of the infrared detection probe and the distance between it and the workpiece being measured.

[0012] Preferably, the surface of the clamping plate is provided with anti-slip texture.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This temperature sensor for non-contact temperature measurement collects infrared radiation signals through an infrared detection probe, which are then converted into temperature electrical signals by a signal processing module. This avoids direct contact with the object being measured, effectively preventing interference with the temperature field of the object. It is suitable for scenarios that are difficult to cover by contact measurement, such as high temperature, easy wear, and high cleanliness, thus broadening the application range of the sensor.

[0014] The signal transmission component is connected to the signal processing module and the infrared detection probe through the connector component to form a reliable signal transmission path, reducing loss or interruption during signal transmission. At the same time, the connector component can improve the assembly reliability of the connection parts and reduce the risk of signal distortion caused by loose connection.

[0015] The mounting adapter is fitted onto the connection area between the infrared detection probe and the signal transmission component. While ensuring the sensor is securely fixed, it does not obstruct the detection angle of the infrared detection probe or interfere with the signal path of the signal transmission component. It is adaptable to the installation environment of different devices under test, solving the problems of poor compatibility and easy impact on sensor performance caused by existing fixed bracket installations, and enhancing installation convenience and scenario compatibility.

[0016] Each component has a clear division of labor and is tightly connected. The installation of the adapter provides a certain degree of protection for the connection area between the probe and the transmission component, reducing the impact of the external environment (such as vibration and dust) on the core connection parts, improving the overall structural stability and service life of the sensor, and better adapting to the needs of complex working conditions such as industrial applications. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the exploded structure of this utility model; Figure 3 This is a schematic diagram of the clamping plate in this utility model; The meanings of the labels in the diagram are as follows: 1. Infrared detection probe; 2. Signal processing module; 3. Signal transmission component; 4. Connector assembly; 5. Mounting adapter component; 51. Threaded rod; 52. Clamping plate; 521. Anti-slip texture. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] This utility model provides a temperature sensor for non-contact temperature measurement, such as... Figures 1-3 As shown, it includes an infrared detection probe 1 for collecting infrared radiation signals from the object being measured; a signal processing module 2 electrically connected to the infrared detection probe 1 for converting the infrared radiation signals into temperature electrical signals; a signal transmission component 3, one end of which is connected to the signal processing module 2 via a connector component 4, and the other end of which is connected to the infrared detection probe 1 for transmitting temperature electrical signals; and an installation adapter component 5, which is fitted onto the connection area between the infrared detection probe 1 and the signal transmission component 3 for fixing the temperature sensor to an external bracket.

[0020] This section clarifies the core overall architecture of the sensor. Through the collaborative design of the infrared detection probe, signal processing module, signal transmission component, and installation adapter, a complete closed-loop function of non-contact temperature measurement without contact with the device under test is achieved, laying the foundation for subsequent optimization and upgrades of each component. Firstly, the infrared detection probe enables precise acquisition of infrared radiation signals from the measured object, ensuring the core requirement of non-contact measurement from the source. This avoids direct contact with the measured object, effectively mitigating interference with its temperature field and adapting to scenarios where contact measurement is difficult to cover, such as high temperature, wear-prone areas, and high cleanliness requirements. Secondly, the coordinated design of the signal transmission component and connector component establishes a stable signal transmission path between the probe and the signal processing module, reducing signal loss or interruption during transmission and improving signal transmission reliability. Thirdly, the innovative installation adapter is fitted into the connection area between the probe and the signal transmission component. This ensures a secure fixation of the sensor to the measured device without obstructing the infrared detection probe's viewing angle or interfering with the signal transmission path of the signal transmission component. This solves the problem of existing sensor mounting brackets easily affecting detection or signal transmission, improving the flexibility and scenario compatibility of installation and adaptation. Fourthly, the overall structure has a clear division of labor and compact connections, with each component working collaboratively, effectively improving the sensor's integration level and enhancing its overall structural stability under complex industrial conditions.

[0021] Specifically, the infrared detection probe 1 includes an optical focusing assembly and an infrared sensing element; the optical focusing assembly is used to concentrate the infrared radiation from the object being measured onto the infrared sensing element. The optical focusing assembly is a parabolic focusing lens or a Fresnel lens. The signal transmission assembly 3 includes a shielded cable, the outer surface of which is covered with a high-temperature resistant insulating layer. The connector assembly 4 is a waterproof electrical connector, and a sealing rubber ring is provided at the interface of the electrical connector.

[0022] This section refines the design of core components, specifically addressing the shortcomings of existing sensors in signal acquisition, transmission, and environmental adaptability, thereby further improving the sensor's measurement accuracy and operational stability. Firstly, the infrared detection probe incorporates a combined structure of an optical focusing component and an infrared sensing element. The optical focusing component concentrates the infrared radiation from the measured object onto the infrared sensing element, significantly enhancing the intensity of the infrared signal acquisition. This is particularly beneficial in long-distance measurement scenarios, compensating for signal attenuation and improving measurement accuracy. Furthermore, the optical focusing component is limited to either a parabolic condenser lens or a Fresnel lens; both types of lenses possess excellent focusing performance and can be flexibly adapted to different measurement distances, object sizes, and other scenarios, further broadening the sensor's applicability. Secondly, the signal transmission component uses shielded cables covered with a high-temperature resistant insulation layer. The shielded cable effectively resists electromagnetic interference in the industrial environment, preventing external interference signals from affecting the temperature electrical signal and ensuring the purity of signal transmission. The high-temperature resistant insulation layer extends the cable's lifespan in high-temperature conditions (such as industrial equipment chambers and high-temperature production workshops), preventing short circuits and other faults caused by insulation softening and aging at high temperatures, thus enhancing the sensor's adaptability to high-temperature environments. Thirdly, the connector assembly uses waterproof electrical connectors with sealing rubber rings, significantly improving the sealing, waterproofing, and dustproofing performance of the connection points. This effectively prevents moisture in humid environments and particulate matter in dusty environments from entering the interface, avoiding sensor malfunctions due to poor contact or short circuits, and greatly improving the sensor's operational stability and lifespan under harsh conditions.

[0023] Furthermore, the mounting adapter 5 includes a threaded rod 51 and a clamping plate 52. One end of the threaded rod 51 is threadedly connected to the infrared detection probe 1. The threaded rod 51 passes through a pre-set mounting hole in the vertical support plate and is clamped onto the support plate by the clamping plate 52. A threaded hole is provided in the middle of the clamping plate 52, and the clamping plate 52 is threadedly connected to the threaded rod 51, facilitating the adjustment of the front and rear positions of the infrared detection probe 1 and the distance to the measured object. The surface of the clamping plate 52 is provided with anti-slip textures 521.

[0024] This section features a refined design for the installation adapter components, addressing key issues such as poor installation flexibility, unstable fixation, and inconvenient distance adjustment in existing sensors. This significantly improves the ease of installation and measurement accuracy adaptability of the sensor. Firstly, the installation adapter components utilize a combination structure of a threaded rod and a clamping plate. One end of the threaded rod connects to the infrared detection probe, while the other end, in conjunction with the clamping plate, secures it to the vertical support plate. This simple structure facilitates easy assembly and allows for rapid installation and fixation of the sensor to the device under test, improving installation efficiency. Secondly, a threaded hole in the center of the clamping plate connects to the threaded rod, enabling adjustable position of the infrared detection probe. This allows for flexible adjustment of the distance between the probe and the measured object according to actual measurement needs, adapting to the measurement accuracy requirements of different distance measurement scenarios. This overcomes the shortcomings of existing fixed supports that cannot adjust the distance and are only suitable for specific scenarios, greatly expanding the sensor's applicability. Third, the surface of the clamping plate is provided with anti-slip texture, which increases the friction between the clamping plate and the vertical support plate, further improving the stability of the clamping and fixing, effectively preventing the sensor from loosening and shifting under equipment vibration, working conditions and other scenarios, ensuring the stability of the detection angle and the accuracy of the measurement data, and enhancing the reliability of the sensor under complex vibration conditions.

[0025] In use, the temperature sensor of this utility model for non-contact temperature measurement is first fixed to an externally preset vertical support plate by installing the adapter component. One end of the threaded rod is threaded to the infrared detection probe, and the other end passes through the mounting hole of the support plate. The clamping plate is rotated to make it fit tightly against the support plate, and the anti-slip texture on the surface of the clamping plate enhances the fixation stability. At the same time, according to the position of the object being measured and the measurement requirements, the extension length of the threaded rod is adjusted by rotating the clamping plate, thereby adjusting the distance between the infrared detection probe and the device under test, ensuring that the probe's detection angle is unobstructed and within the optimal signal acquisition range.

[0026] After the sensor is activated, the infrared detection probe begins to work. Its internal optical focusing component (parabolic condenser lens or Fresnel lens) focuses the infrared signal radiated by the device under test. The focused infrared radiation is accurately projected onto the infrared sensitive element. The infrared sensitive element converts the received infrared radiation signal into the corresponding initial electrical signal, completing non-contact signal acquisition. It does not directly contact the device under test throughout the process, thus avoiding interference with the temperature field of the device under test.

[0027] The initial electrical signal output by the infrared sensing element is transmitted to the signal processing module through the signal transmission component. The shielded cable used in the signal transmission component can effectively resist electromagnetic interference in the industrial environment, and the high-temperature resistant insulation layer on the outer layer ensures that the cable can work stably under high-temperature conditions. One end of the cable is sealed to the signal processing module through a waterproof connector assembly. The sealing rubber ring at the connector interface prevents moisture and particulate matter from entering, ensuring that the electrical signal is delivered to the signal processing module without loss or distortion during transmission.

[0028] After receiving the initial electrical signal, the signal processing module performs filtering, amplification, and conversion through internal circuitry to transform it into a temperature signal that can characterize the temperature of the device under test. This temperature signal can then be further transmitted to subsequent display, control, or storage devices to achieve real-time monitoring of the temperature of the device under test.

[0029] During long-term operation, the sturdy structure of the mounting adapter prevents the sensor from shifting due to equipment vibration or working conditions, ensuring a stable detection angle. If the position of the device under test or the measurement requirements change, the clamping plate can be rotated again to adjust the distance between the probe and the device under test, flexibly adapting to new measurement scenarios and ensuring continuous and accurate non-contact temperature measurement. Finally, it should be noted that the electronic components in the signal processing module 2 and other components in this embodiment are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components are connected by wires. The specific connection method should refer to the working order between each electrical component in the above working principle to complete the electrical connection. All of these are technologies known in the art.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A temperature sensor for non-contact temperature measurement, characterized in that: include Infrared detection probe (1) is used to collect infrared radiation signals from the object being measured; The signal processing module (2) is electrically connected to the infrared detection probe (1) and is used to convert the infrared radiation signal into a temperature electrical signal. The signal transmission component (3) is connected to the signal processing module (2) at one end via the connector component (4) and to the infrared detection probe (1) at the other end, and is used to transmit the temperature electrical signal. Install the adapter component (5), which is fitted onto the connection area between the infrared detection probe (1) and the signal transmission component (3) to fix the temperature sensor onto the external bracket; The signal transmission component (3) includes a shielded cable, the outer surface of which is covered with a high-temperature resistant insulating layer; The connector assembly (4) is a waterproof electrical connector, and a sealing rubber ring is provided at the interface of the electrical connector; The mounting adapter component (5) includes a threaded rod (51) and a clamping plate (52); one end of the threaded rod (51) is threadedly connected to the infrared detection probe (1), the threaded rod (51) passes through the mounting hole of the pre-set vertical support plate, and is clamped on the support plate by the clamping plate (52).

2. The temperature sensor for non-contact temperature measurement according to claim 1, characterized in that: The infrared detection probe (1) includes an optical focusing component and an infrared sensitive element; the optical focusing component is used to focus the infrared radiation of the object under test onto the infrared sensitive element.

3. The temperature sensor for non-contact temperature measurement according to claim 2, characterized in that: The optical focusing component is a parabolic focusing mirror or a Fresnel lens.

4. The temperature sensor for non-contact temperature measurement according to claim 1, characterized in that: The clamping plate (52) has a threaded hole in the middle. The clamping plate (52) is threadedly connected to the threaded rod (51), which facilitates the adjustment of the front and rear positions of the infrared detection probe (1) and the distance between it and the test piece.

5. The temperature sensor for non-contact temperature measurement according to claim 4, characterized in that: The surface of the clamping plate (52) is provided with anti-slip texture (521).

Images