Non-contact temperature sensor decontamination device and method

Abstract

This application provides a non-contact temperature sensor foreign object removal device and method, relating to the field of concrete construction technology. The device includes: a foreign object removal module comprising a sensor protective housing and a vibrator; the sensor protective housing houses the temperature sensor; a mounting bracket comprising a base and a tension sensor; the base is used to fix the foreign object removal device; the tension sensor is connected to the base and the foreign object removal module; and a controller electrically connected to the tension sensor and the vibrator; the controller activates the vibrator when the real-time measured value of the tension sensor is greater than or equal to a first preset tension threshold. The device and method provided by this application can automatically activate the vibrator to remove foreign objects from the sensor protective housing through mechanical vibration; it achieves on-demand, automatic cleaning of the sensor probe, greatly improving the accuracy and reliability of temperature measurement, while significantly reducing the cost and workload of manual maintenance.

Description

Technical Field

[0001] This application relates to the field of concrete construction technology, and in particular to a non-contact temperature sensor removal device and method. Background Technology

[0002] In large-volume concrete projects, due to the large amount of cementitious materials contained within, the concrete undergoes a process of initial heating followed by cooling after pouring due to the heat of hydration. This temperature difference generates significant thermal stress within the concrete structure. Once this stress exceeds the tensile strength of the concrete itself, thermal cracks will develop, severely impacting the final quality and long-term operational safety of the project. Therefore, strict temperature control throughout the entire process of concrete production, from raw materials, transportation, pouring to final curing, is a core element in ensuring project quality.

[0003] In the concrete production process, the temperature at the mixer outlet is one of the most critical monitoring points in the entire temperature control chain. To obtain this data in real time and accurately, the industry commonly uses non-contact high-precision infrared temperature sensors for measurement. However, in the actual operation of concrete discharge from the mixer, concrete splashing is a common and unavoidable phenomenon. The purging system of the non-contact high-precision infrared temperature sensor in related technologies can only remove dust from the sensor probe, but cannot remove splashed concrete. Once the infrared temperature sensor probe is covered with concrete, the collected temperature data will be distorted. Therefore, frequent manual removal of splashed concrete is required. If removal is not timely, it will affect the accuracy of the concrete outlet temperature data, thus affecting project quality, and the personnel maintenance cost is relatively high.

[0004] Therefore, how to automatically and efficiently remove sputtering material from temperature sensors to ensure the authenticity and reliability of temperature data acquisition has become a pressing technical problem for the industry. Summary of the Invention

[0005] This application provides a non-contact temperature sensor removal device and method to solve the technical problem of how to automatically and efficiently remove sputtering material from temperature sensors to ensure the authenticity and reliability of temperature data acquisition.

[0006] This application provides a non-contact temperature sensor removal device, including a removal module, a mounting bracket, and a controller; The noise removal module includes a sensor protective housing and a vibrator rigidly connected to the sensor protective housing; the sensor protective housing is used to house the temperature sensor. The mounting bracket includes a base and a tension sensor; the base is used to fix the removal device; a first end of the tension sensor is connected to the base, and a second end is connected to the removal module. The controller is electrically connected to the tension sensor and the vibrator; the controller is configured to activate the vibrator when the real-time measured value of the tension sensor is greater than or equal to a first preset tension threshold.

[0007] In some embodiments, the controller is configured to adjust the vibration frequency of the vibrator to the resonant frequency of the sensor protective housing.

[0008] In some embodiments, the controller is configured to stop the vibrator if the real-time measured value of the tension sensor is less than or equal to a second preset tension threshold.

[0009] In some embodiments, the sensor protective housing is made of a modified polyethylene material; The sensor protective housing includes a cover portion and a main body portion; The opening section and the main body section are closed by a push-pull lock and bolts; The vibrator is fixed to the opening section with bolts. The end of the main body near the opening portion is used to house the temperature sensor, while the end away from the opening portion is shaped like a flared mouth.

[0010] In some embodiments, the temperature sensor is connected to the main body using two ring-mounted cross brackets; The ring-mounted cross bracket includes an outer ring and an inner ring; The diameter of the outer ring is equal to the inner diameter of the main body portion; The diameter of the inner ring is equal to the outer diameter of the temperature sensor.

[0011] In some embodiments, the removal module further includes a purging unit; The controller is also electrically connected to the purging unit; the controller is configured to activate the purging unit to purge the temperature sensor at the same time as or after the vibration is activated.

[0012] In some embodiments, the controller is also electrically connected to the discharge port electrically controlled valve; The controller is configured to acquire the real-time measurement value of the tension sensor when there is no action signal from the electrically controlled valve at the discharge port; The vibrator is activated when the real-time measured value of the tension sensor is greater than or equal to a first preset tension threshold.

[0013] In some embodiments, the base secures the odor removal device entirely to one side below the horizontal plane of the concrete mixer's discharge port.

[0014] This application provides a non-contact temperature sensor rejection method, applied to the controller in the aforementioned non-contact temperature sensor rejection device, comprising: If it is determined that the discharge port electrical control valve has no action signal, the real-time measurement value of the tension sensor is obtained; If the real-time measured value is greater than or equal to the first preset tensile threshold, the vibrator is activated, and the real-time measured value of the tensile sensor is continuously acquired during the operation of the vibrator. If the real-time measured value of the tension sensor is less than or equal to the second preset tension threshold, the vibrator is stopped.

[0015] In some embodiments, the activation of the vibrator includes: Adjust the vibration frequency of the vibrator to the resonant frequency of the sensor protective housing.

[0016] The non-contact temperature sensor foreign object removal device and method provided in this application can use a tension sensor to monitor the weight change of the removal device itself in real time, thereby intelligently and automatically judging the adhesion degree of the splashed foreign objects. When the tension generated by the weight of the foreign object exceeds a first preset tension threshold, the controller can automatically start the vibrator to efficiently remove the foreign object from the sensor protective shell through mechanical vibration. This solves the problem of related technologies relying on manual cleaning at regular intervals and data distortion caused by untimely cleaning, realizes on-demand and automatic cleaning of the sensor probe, greatly improves the authenticity and reliability of temperature measurement, and significantly reduces the cost and workload of manual maintenance. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0018] To more clearly illustrate the technical solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the non-contact temperature sensor removal device provided in this application.

[0020] Figure 2 This is an installation diagram of the non-contact temperature sensor removal device provided in this application.

[0021] Figure 3This is a flowchart illustrating the non-contact temperature sensor removal method provided in this application.

[0022] Figure 4 This is a schematic diagram of the structure of the electronic device provided in this application. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0024] It should be noted that the terms "first," "second," etc., used in this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that comprises a series of steps, units, or modules is not necessarily limited to those explicitly listed, but may include other steps, units, or modules not explicitly listed or inherent to such processes, methods, products, or devices.

[0025] ‌ Figure 1 This is a schematic diagram of the non-contact temperature sensor removal device provided in this application, as shown below. Figure 1 As shown, the non-contact temperature sensor removal device 100 includes a removal module 110, a mounting bracket 120, and a controller 130.

[0026] The noise removal module 110 includes a sensor protective housing 111 and a vibrator 112 rigidly connected to the sensor protective housing. The sensor protective housing is used to house the temperature sensor.

[0027] The mounting bracket 120 includes a base 121 and a tension sensor 122. The base is used to fix the removal device. The first end of the tension sensor is connected to the base, and the second end is connected to the removal module.

[0028] The controller 130 is electrically connected to the tension sensor and the vibrator. The controller is configured to activate the vibrator when the real-time measured value of the tension sensor is greater than or equal to a first preset tension threshold.

[0029] Specifically, the non-contact temperature sensor removal device provided in this application mainly includes a removal module, a mounting bracket, and a controller.

[0030] The non-contact temperature sensor can be a high-precision non-contact infrared temperature sensor. Its specific parameters are as follows: Temperature range: -20℃~85℃ (degrees Celsius); Temperature accuracy: ±0.5℃ (within the range of 0~85℃); Optical resolution: 30:1; Operating voltage: 12V~24V (volts); Dimensions: Φ16mm (millimeters) × 100mm; Metal casing with wire-cutting treatment; Protection rating: IP65.

[0031] The foreign object removal module is the core component for performing the function of removing foreign objects. In a specific scenario of this application embodiment, the foreign object mainly refers to concrete slurry that splashes and adheres during the concrete production process. The foreign object removal module includes a sensor protective housing and a vibrator.

[0032] The primary function of a sensor protective housing is to provide a physical enclosure and protective space for the internally installed non-contact temperature sensor, protecting it from direct impacts from the external environment such as dust, moisture, and mechanical shocks. Simultaneously, the outer surface of this housing also forms the main adhesion area for foreign objects such as splashed concrete. This sensor protective housing can take various structural forms, such as a one-piece molded cylindrical, square, or other easily manufactured shapes. Its material can be metal, polymer, or composite materials, as long as it meets the requirements for structural strength and vibration transmission.

[0033] The vibrator's function is to generate mechanical vibration and transmit this vibration to the sensor's protective housing. In this embodiment, the vibrator is rigidly connected to the sensor's protective housing, for example, by bolts, welding, or clips, to ensure that the vibration energy generated by the vibrator can be efficiently and without attenuation transmitted to the entire sensor's protective housing, thereby causing the housing to vibrate and shaking off the attached material. The vibrator can be a conventional vibration generating device in the art, such as a miniature DC motor, an electromagnetic vibrator, or other devices capable of converting electrical energy into mechanical vibration energy.

[0034] The mounting bracket serves to reliably secure the entire foreign object removal device in its working position and integrates sensing elements for detecting foreign object adhesion. The mounting bracket includes a base and a tension sensor.

[0035] The base serves as the fixed reference point for the entire anti-separation device, used to secure the device to the external structure. For example, in concrete batching plant applications, the base can be fixed to the frame or outer casing of the concrete mixer. The structure of the base can be adapted to the actual installation location; for example, it can be a triangular base or a flange structure of other shapes.

[0036] The tension sensor is a key component for automatically detecting foreign object attachment. Its first end connects to the base, while the second end connects to the foreign object removal module. This suspended connection allows the tension sensor to measure the total weight of the entire foreign object removal module (including the sensor's protective housing, internal temperature sensor, and vibrator) in real time. The tension sensor itself can be any sensor capable of converting tension or weight into an electrical signal (such as voltage, current, or frequency signals), such as strain gauge tension sensors or piezoelectric tension sensors.

[0037] The controller is responsible for receiving information, making judgments, and issuing commands. It is electrically connected to the tension sensor and vibrator. The controller can be a programmable logic controller, a microcontroller, a microprocessor, or a dedicated control circuit board, etc.

[0038] The controller is configured to execute the core automatic control logic, namely: to start the vibrator when the real-time measurement value of the tension sensor is greater than or equal to the first preset tension threshold.

[0039] The control logic is explained in detail below: First, a first preset tensile force threshold needs to be set. This threshold is not a fixed absolute value, but rather depends on the initial state of the device. Specifically, after the device is installed and the sensor's protective housing is clean and free of any adhering substances, the controller can record the measured value of the tensile sensor at this time, which is defined as the initial tensile force value. The first preset tensile force threshold is a tolerance amount added to this baseline tensile force value. For example, this threshold can be set as "initial tensile force value + tensile force value generated by a preset weight increment". This weight increment represents the upper limit of the weight of attached material that the system can tolerate; once this upper limit is exceeded, cleaning is considered necessary. In some specific embodiments, this threshold can be set as a specific percentage of the baseline tensile force value, for example... . These are preset coefficients.

[0040] As the device operates, foreign objects such as concrete are continuously splashed and adhere to the sensor's protective housing, gradually increasing the total weight of the foreign object removal module and affecting the real-time measurement value of the tension sensor. The force also increases accordingly. The controller continuously collects and compares the real-time measurement value of the tension sensor with a preset first tension threshold. Once the controller determines that the real-time measurement value has reached or exceeded the first preset tension threshold (…), the force will increase accordingly. This indicates that the attached foreign matter has accumulated to a certain extent. At this point, the controller will immediately output a start signal to the vibrator to make it start working.

[0041] The non-contact temperature sensor foreign object removal device provided in this application embodiment can use a tension sensor to monitor the weight change of the removal device itself in real time, thereby intelligently and automatically judging the adhesion degree of the splashed foreign objects; when the tension generated by the weight of the foreign object exceeds a first preset tension threshold, the controller can automatically start the vibrator to efficiently remove the foreign object from the sensor protective shell through mechanical vibration; it solves the problem of related technologies relying on manual timed cleaning and data distortion caused by untimely cleaning, realizes on-demand and automatic cleaning of the sensor probe, greatly improves the authenticity and reliability of temperature measurement, and significantly reduces the cost and workload of manual maintenance.

[0042] In some embodiments, the controller is configured to adjust the vibration frequency of the vibrator to the resonant frequency of the sensor protective housing.

[0043] Specifically, any physical structure with mass and elasticity possesses its inherent natural vibration frequency, i.e., resonant frequency. When the frequency of an external excitation matches this resonant frequency, the structure will produce the maximum vibration amplitude with minimal energy input. In this embodiment, the sensor protective housing acts as an independent vibrating body, and its resonant frequency ( Its properties are mainly determined by its own material properties, geometry, and size, which can be expressed by the formula: .

[0044] in, The elastic modulus of the sensor's protective housing material (e.g., polyethylene), measured in MPa (megapascals), can be obtained experimentally. The moment of inertia of the cross section, in units (The fourth power of the meter) is related to the thickness and shape of the material and can be obtained through experiments; L represents the mass per unit length, expressed in kg / m; L represents the axial length of the sensor protective housing, expressed in m.

[0045] The vibrator used in this embodiment is frequency-adjustable. For example, a miniature DC motor can be used as the vibrator, and the vibration frequency can be adjusted by changing its rotational speed. The controller can precisely control the rotational speed by changing the voltage and current supplied to the motor or by using pulse width modulation. This can be expressed by the following formula: 。

[0046] in, It is the output frequency of the vibrator, measured in Hz (Hertz). It is the motor speed, and the unit is rad / s (radians per second). This is the number of excitation pole pairs of the motor, a dimensionless quantity. The controller can adjust the output frequency by regulating the motor speed.

[0047] The non-contact temperature sensor cleaning device provided in this application precisely matches the excitation frequency of the vibrator to the resonant frequency of the sensor's protective shell. In the resonant state, the sensor's protective shell generates maximum amplitude, resulting in violent shaking and a powerful inertial force. This strong force effectively breaks the adhesion between foreign objects such as concrete and the shell surface, causing them to peel off and fall off. Compared to vibration at a non-resonant frequency, this method not only provides a stronger and more thorough cleaning effect, capable of handling foreign objects with stronger adhesion, but also requires less energy input to achieve the same cleaning effect, making it more energy-efficient.

[0048] In some embodiments, the controller is configured to stop the vibrator when the real-time measurement value of the tension sensor is less than or equal to a second preset tension threshold.

[0049] Specifically, after the vibrator is activated, it begins to operate, causing the sensor's protective housing to vibrate. As the vibration continues, foreign objects such as concrete adhering to the housing are gradually shaken off, resulting in a gradual reduction in the overall weight of the foreign object removal module. Consequently, the real-time measurement value of the tension sensor also decreases.

[0050] While the vibrator is activated, the controller continuously and in real time acquires and monitors the measured values ​​of the tension sensor.

[0051] The second preset tensile threshold is a benchmark used to determine whether the decontamination work is complete. This threshold is typically set close to the initial weight of the device in a clean state. For example, it can be set equal to or slightly higher than the initial tensile value of the device. In one specific embodiment, the second preset tensile threshold can be set as "a baseline tensile value + a small tolerance value", for example... Setting a threshold slightly higher than the baseline value can prevent the system from failing to stop due to minute residues or measurement fluctuations in the sensor itself, thus improving the system's robustness.

[0052] When the real-time measurement value of the tension sensor is less than or equal to the second preset tension threshold ( In the event of ( ), stop the vibrator.

[0053] The non-contact temperature sensor removal device provided in this application ensures the necessity and effectiveness of the removal operation. It not only avoids energy waste and mechanical wear caused by the vibrator's long-term ineffective operation and extends the service life of the equipment, but also uses a tension sensor to objectively quantify the removal results, ensuring that each removal operation achieves the expected effect and ensuring the cleanliness of the temperature sensor probe, thereby providing a reliable guarantee for subsequent accurate temperature measurement.

[0054] In some embodiments, the sensor protective housing is made of a modified polyethylene material; The sensor protective housing consists of a cover section and a main body section; The opening section and the main body are closed using a push-pull lock and bolts; The vibrator is bolted to the open cover section; The end of the main body near the opening is used to house the temperature sensor, while the end away from the opening is shaped like a flared mouth.

[0055] Specifically, the sensor's protective housing is made of modified polyethylene. This particular material was chosen based on its excellent physical properties. Firstly, modified polyethylene has an extremely low coefficient of surface friction and excellent self-lubricating properties, making it difficult for highly viscous foreign matter such as concrete slurry splashed onto its surface to adhere firmly. Even if it does adhere, the adhesion is weak, making it easier to detach under vibration. Secondly, this material has good wear resistance, resisting long-term erosion and wear from sand and gravel aggregates in concrete, ensuring the device's service life. Furthermore, this material can generate a good resonant response in specific frequency bands (such as the low-frequency band), providing an ideal physical basis for efficient cleaning using the principle of resonance.

[0056] To facilitate the installation and subsequent maintenance of the internal temperature sensor, the sensor protective housing can be designed as a split structure. This structure specifically includes a cover section and a main body section.

[0057] To achieve both rapid maintenance and reliable fixation, the cover and main body are closed using a push-pull lock and bolts. The push-pull lock structure allows maintenance personnel to quickly open or close the casing without fully unscrewing the bolts, greatly improving the convenience of on-site maintenance. Once closed, tightening the bolts ensures a rigid and secure connection between the cover and the main body. This connection effectively resists the high-intensity vibrations generated during operation, preventing loosening or abnormal noises due to vibration, thus ensuring structural integrity and effective vibration transmission.

[0058] To facilitate assembly and the transfer of vibrational energy, the vibrator is bolted to the cover section. Integrating the vibrator into the detachable cover section simplifies the internal structure of the device. When maintenance or replacement of the vibrator is required, simply remove the cover section for easy operation. Simultaneously, the rigid connection via bolts ensures that the vibrational energy generated by the vibrator is efficiently transferred to the entire sensor protective housing.

[0059] The main body's structure has also been optimized. The end closest to the cover houses the temperature sensor, providing basic physical protection. The end furthest from the cover, facing the concrete being measured, is flared. This design offers several advantages: First, the flared, open structure provides a wider field of view, reducing the likelihood of the sensor's view being obstructed by the outer edge of the casing; second, it physically increases the distance between the sensor probe lens and the outermost edge of the device, more effectively preventing splashed concrete from directly contaminating the probe lens; finally, the gradually expanding opening prevents complete blockage even if a small amount of foreign matter adheres to the inner wall.

[0060] The non-contact temperature sensor foreign object removal device provided in this application not only reduces the possibility of foreign object adhesion at the material level, but also greatly improves the convenience of installation and maintenance through the split, quick-release and fixed connection structure of the sensor protective shell.

[0061] In some embodiments, the temperature sensor is connected to the main body using two ring-mounted cross brackets; The ring-mounted cross bracket consists of an outer ring and an inner ring; The diameter of the outer ring is equal to the inner diameter of the main body; The diameter of the inner ring is equal to the outer diameter of the temperature sensor.

[0062] Specifically, the temperature sensor is connected to the main body using two ring-shaped cross brackets. In actual installation, two such ring-shaped cross brackets are usually spaced apart along the axial direction of the temperature sensor to ensure that the temperature sensor is stably fixed on the central axis of the main body and to prevent it from shaking or tilting under vibration or external impact.

[0063] Each ring-shaped cross support consists of an outer ring and an inner ring.

[0064] The outer ring mates with the inner wall of the main body of the sensor protective housing. In one specific embodiment, the diameter of the outer ring is equal to the inner diameter of the main body. This means that the outer ring can be firmly fixed to the inner wall of the main body by means of tight fit, threaded connection (e.g., both the outer wall of the outer ring and the inner wall of the main body are threaded), or adhesive, thus becoming a stable internal support for the main body.

[0065] The inner ring is used to secure the temperature sensor itself. In one specific embodiment, the diameter of the inner ring is equal to the outer diameter of the temperature sensor. In this way, the temperature sensor can be precisely and coaxially inserted into the inner ring and firmly clamped by a tight fit, a set screw on the inner ring, or threads.

[0066] The outer and inner rings are connected by cross-shaped ribs (spokes), forming the overall structure of the ring-shaped cross support. This cross-shaped structure provides stable and reliable radial support with minimal material, ensuring the centered positioning of the inner ring relative to the outer ring; on the other hand, it leaves a large hollow area between the inner and outer rings.

[0067] The non-contact temperature sensor removal device provided in this application, by adopting a ring-mounted cross bracket installation method, not only solves the problem of stable fixing of the temperature sensor, but also constructs a flow channel for the purging gas.

[0068] In some embodiments, the removal module further includes a purging unit; The controller is also electrically connected to the purging unit; the controller is configured to activate the purging unit to purge the temperature sensor at the same time as or after the vibration is activated.

[0069] Specifically, the main function of the purging unit is to provide high-pressure, high-speed airflow to purge tiny particles, such as dust and water mist, adhering to the optical lenses of the temperature sensor probe. The purging unit can consist of an air compressor, an air supply line, and a control valve. The air compressor serves as the air source, providing compressed and filtered clean purging media (usually compressed air); the air supply line guides this media from the air source to the inside of the sensor's protective housing; and the control valve, typically a solenoid valve, is directly controlled by the controller to regulate the opening and closing of the purging air path.

[0070] The electrical connection between the controller and the purging unit specifically refers to the electrical connection between the controller and the control valve. The controller is configured to activate the purging unit to purge the temperature sensor simultaneously with or after the vibration is activated.

[0071] In one specific embodiment, the controller outputs a start signal to the vibrator and simultaneously outputs a start signal to the control valve of the purging unit. In this mode, mechanical vibration and high-pressure airflow act simultaneously on the sensor protective housing and the temperature sensor. The mechanical vibration is primarily responsible for peeling off and shaking off large, sticky deposits (such as concrete blocks), while the high-speed airflow immediately blows these loosened debris and even smaller dust particles away from the sensor area, preventing them from re-adhering or accumulating near the sensor probe. The two work together to achieve simultaneous and rapid removal of deposits of different sizes.

[0072] In another specific embodiment, the controller activates the vibrator for a preset period of time before starting the blowing unit. In this mode, the cleaning process is divided into two stages. In the first stage, only the vibrator is activated, using its powerful vibration to concentrate on processing large, stubborn adhering materials, causing them to detach due to gravity. After the first stage, the second stage begins, where the controller activates the blowing unit while maintaining or stopping the vibration. At this time, the main task of the high-pressure airflow is to perform "fine cleaning," that is, to specifically remove the fine dust that may remain on the optical lens of the temperature sensor probe after the first stage, ensuring the cleanliness of the optical path. This step-by-step mode has a more refined logic and can achieve a more targeted cleaning effect with lower energy consumption.

[0073] It should be particularly noted that the purging function in this embodiment is coordinated with the annular cross bracket structure. The annular cavity constructed by the annular cross bracket between the outer wall of the temperature sensor and the inner wall of the sensor protective housing becomes an ideal channel for the purging airflow. After compressed air enters this cavity through the air supply pipeline, it can flow smoothly along the axial direction to the front end of the device and finally be ejected from the flare end, forming an effective purging coverage of the temperature sensor probe.

[0074] The non-contact temperature sensor removal device provided in this application embodiment ensures that both large concrete splashes and tiny dust particles can be effectively removed, thereby maximizing the cleanliness of the temperature sensor probe under harsh working conditions and providing dual protection for obtaining continuous and accurate temperature data.

[0075] In some embodiments, the controller is also electrically connected to the discharge port electrically controlled valve; The controller is configured to acquire the real-time measurement value of the tension sensor when there is no action signal from the electrically controlled valve at the discharge port; The vibrator is activated when the real-time measurement value of the tension sensor is greater than or equal to the first preset tension threshold.

[0076] Specifically, the controller is also electrically connected to the discharge port electrically controlled valve. This electrical connection allows the controller to acquire the operating status signal of the discharge port electrically controlled valve in real time. For example, when the electrically controlled valve is driven to open for material discharge, its control circuit generates an action signal (e.g., a DC 24-volt level signal); and when material discharge ends, and the valve closes or remains stationary, this action signal disappears.

[0077] Based on this connection, the controller is configured to execute intelligent control logic with precondition checks. Specifically, this includes: Step 1: Status Determination. The controller continuously monitors the signal from the discharge port electrically controlled valve. It will only proceed to the next step of weight detection if it determines that the discharge port electrically controlled valve has no activation signal. No activation signal means that the mixer is not currently in the feeding state. The reason for choosing this time window for weight detection is to avoid dynamic interference during the feeding process and ensure the static validity of the measured value.

[0078] Step 2: Weight Detection and Activation. Only after the precondition of no action signal from the discharge port's electrically controlled valve is met will the controller acquire the real-time measurement value from the tension sensor and compare it with the first preset tension threshold. If the real-time measurement value from the tension sensor is greater than or equal to the first preset tension threshold, the vibrator and, optionally, the purging unit will be activated.

[0079] The non-contact temperature sensor removal device provided in this application embodiment effectively avoids dynamic interference during the feeding process, fundamentally eliminating misjudgments and false starts caused by it, and greatly improving the stability and reliability of system operation; it avoids starting the removal device during the feeding process, because the cleaning behavior at this time is ineffective and dangerous, thereby saving energy and ensuring equipment safety.

[0080] In some embodiments, the base secures the odor removal device entirely to one side below the horizontal plane of the concrete mixer's discharge port.

[0081] Specifically, the horizontal plane of the discharge port refers to the horizontal reference plane where the lower edge of the discharge port of the concrete mixer is located.

[0082] Below the horizontal plane means that the highest point of the entire removal device is also lower than the aforementioned horizontal reference plane. This vertical layout allows the device to completely avoid the direct impact path of the main stream of concrete gushing out from the outlet. Most of the high-energy ejecta will move forward or downward along a parabolic trajectory, rather than splashing directly horizontally or upward onto the device.

[0083] "One side" means that the device is not installed directly below the discharge port, but rather next to the central axis of the discharge port. This lateral layout allows the device to successfully avoid the core material flow column that falls vertically from the discharge port.

[0084] The non-contact temperature sensor removal device provided in this application embodiment fixes the entire removal device to one side below the horizontal plane of the concrete mixer outlet, thereby reducing the probability of concrete directly splashing onto the sensor protective shell from the source to the greatest extent.

[0085] Figure 2 This is an installation diagram of the non-contact temperature sensor removal device provided in this application, as shown below. Figure 2As shown, the device mainly includes a removal module, a mounting bracket, and a controller, as well as a power supply module.

[0086] The anti-spot module mainly includes a sensor protective housing and a vibrator, as well as a purging unit.

[0087] The sensor protective housing is made of modified high-molecular-weight polyethylene. The housing consists of a cover section and a main body section. The main body section is divided into a tail section and an end section. The tail section is located closer to the cover section, while the end section is further away from the cover section.

[0088] The tail has an inner diameter of Φ38mm and a length of 150mm. It has an internal thread with an inner diameter of Φ38mm and a length of 140mm. A 25mm long cap is cut at the tail of the tube at one-quarter of the diameter to facilitate the installation of the vibrator. The cap is closed to the main body by a push-pull lock and bolts.

[0089] The end length is 60mm, with the 10mm section near the tail having an inner diameter of Φ38mm, and the remaining 50mm section having a transition of 38mm~45mm, presenting a trumpet shape.

[0090] The non-contact high-precision infrared temperature sensor and its protective housing are connected by two ring-mounted cross-shaped threaded brackets. The outer ring of the ring-mounted cross bracket has an outer diameter of Φ38mm and a thickness of 10mm; the inner ring has an inner diameter of Φ16mm and a thickness of 8mm.

[0091] The sensor protective housing serves to provide mounting support for the frequency converter and protect the sensor from damage caused by impacts from foreign objects. It also creates a cavity between the sensor and the housing to allow the purging gas to pass through smoothly.

[0092] The vibrator is bolted to the open section of the sensor protective housing. The vibrator uses a low-frequency adjustable miniature DC motor, measuring Φ12mm × 20mm, and powered by DC 24V. To maximize the amplitude of the vibration and reduce concrete adhesion between the protective housing and the shield, the vibrator's frequency is adjusted by changing the number of excitation pole pairs of the DC motor via a built-in controller.

[0093] The mounting bracket mainly consists of a base and a tension sensor. One end of the mounting bracket is bolted to the sensor's protective housing via a sector-shaped triangular base, while the other end is connected to the concrete mixer's housing via a triangular base. A tension sensor is installed in the middle of the rigid connecting arm. By sensing the initial and current tension of the non-contact temperature sensor removal device, the weight on the mounting bracket can be detected to determine whether foreign objects on the sensor have been completely removed.

[0094] The controller employs a Programmable Logic Controller (PLC) or a 64-bit microprocessor for decision-making and control. By monitoring the real-time action signal of the electrically controlled valve below the discharge port and the tension value of the tension sensor, the controller controls the operation of the purging unit and vibrator, as well as the vibration frequency adjustment. When the tension is greater than or equal to the first preset tension threshold, the controller, determining that the electrically controlled valve below the discharge port has no action signal, can activate the purging module. It continuously adjusts the regulating valve in the purging unit to regulate the purging and airflow, while simultaneously adjusting the number of excitation pole pairs to adjust the vibration frequency, bringing it closer to the resonant frequency of the sensor's protective housing. The purging module stops when the tension is less than or equal to the second preset tension threshold.

[0095] The power module can convert the mixer's AC 220V power supply to DC 24V power supply, providing power for non-contact high-precision infrared temperature sensors, vibrators, tension sensors, and controllers.

[0096] The non-contact temperature sensor removal device provided in this application has the following advantages: (1) Practicality: By optimizing the integration of the sensor with the protective housing and the equipment, the temperature measurement requirements of non-contact high-precision infrared temperature sensing can be met.

[0097] (2) Stability: By optimizing the protective shell, adding a high-frequency vibrator and non-contact high-precision infrared temperature sensor installation method, the accuracy of temperature acquisition and the stability of data have been improved.

[0098] (3) Economic efficiency: By optimizing the protective shell and adding a high-frequency vibrator, normal temperature data can be collected without the need for personnel maintenance, which greatly reduces maintenance costs.

[0099] The methods provided in the embodiments of this application are described below, and the methods described below can be referred to in correspondence with the apparatus described above.

[0100] Figure 3 This is a flowchart illustrating the non-contact temperature sensor rejection method provided in this application, as shown below. Figure 3 As shown, the method is applied to the controller in the non-contact temperature sensor removal device in the above embodiments, including: Step 310: If it is determined that there is no action signal from the discharge port electric control valve, obtain the real-time measurement value of the tension sensor; Step 320: When the real-time measured value is greater than or equal to the first preset tensile threshold, start the vibrator and continuously acquire the real-time measured value of the tensile sensor during the operation of the vibrator; Step 330: Stop the vibrator when the real-time measured value of the tension sensor is less than or equal to the second preset tension threshold.

[0101] The non-contact temperature sensor removal method provided in this application ensures that detection and removal are performed only at the most appropriate time through intelligent linkage with the status of the discharge port's electrically controlled valve. Through closed-loop control based on actual weight feedback, it achieves lean management of "starting on demand and stopping immediately after cleaning." It solves the problems of related technologies relying on manual timed cleaning and data distortion caused by untimely cleaning, and realizes on-demand automatic cleaning of the sensor probe, which greatly improves the authenticity and reliability of temperature measurement, while significantly reducing the cost and workload of manual maintenance.

[0102] In some embodiments, activating the vibrator includes: Adjust the vibration frequency of the vibrator to the resonant frequency of the sensor protective housing.

[0103] The non-contact temperature sensor cleaning method provided in this application precisely matches the excitation frequency of the vibrator to the resonant frequency of the sensor's protective shell. This not only results in a stronger and more thorough cleaning effect, capable of handling foreign objects with stronger adhesion, but also requires less energy input to achieve the same cleaning effect, making it more energy-efficient.

[0104] Figure 4 This is a schematic diagram of the structure of the electronic device provided in this application, such as... Figure 4 As shown, the electronic device may include: a processor 410, a communications interface 420, a memory 430, and a communications bus 440, wherein the processor, communications interface, and memory communicate with each other via the communications bus. The processor can invoke logical commands stored in the memory to execute the methods described in the above embodiments, for example: If the discharge port electrical control valve has no action signal, the real-time measurement value of the tension sensor is acquired; if the real-time measurement value is greater than or equal to the first preset tension threshold, the vibrator is started and the real-time measurement value of the tension sensor is continuously acquired during the operation of the vibrator; if the real-time measurement value of the tension sensor is less than or equal to the second preset tension threshold, the vibrator is stopped.

[0105] Furthermore, the logical commands in the aforementioned memory can be implemented as software functional units and sold or used as independent products, and can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several commands to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0106] The processor in the electronic device provided in this application embodiment can call logical instructions in the memory to implement the above method. Its specific implementation method is the same as the aforementioned method implementation method and can achieve the same beneficial effect, which will not be repeated here.

[0107] This application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, is implemented to perform the methods provided in the above embodiments.

[0108] The specific implementation method is the same as the aforementioned method implementation method and can achieve the same beneficial effects, so it will not be repeated here.

[0109] This application provides a computer program product, including a computer program that, when executed by a processor, implements the method described above.

[0110] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0111] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0112] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A non-contact temperature sensor anomaly removal device, characterized in that, Includes a rejection module, mounting bracket, and controller; The noise removal module includes a sensor protective housing and a vibrator rigidly connected to the sensor protective housing; the sensor protective housing is used to house the temperature sensor. The mounting bracket includes a base and a tension sensor; the base is used to fix the removal device; a first end of the tension sensor is connected to the base, and a second end is connected to the removal module. The controller is electrically connected to the tension sensor and the vibrator; the controller is configured to activate the vibrator when the real-time measured value of the tension sensor is greater than or equal to a first preset tension threshold.

2. The non-contact temperature sensor anti-aliasing device according to claim 1, characterized in that, The controller is configured to adjust the vibration frequency of the vibrator to the resonant frequency of the sensor protective housing.

3. The non-contact temperature sensor anti-aliasing device according to claim 1, characterized in that, The controller is configured to stop the vibrator when the real-time measured value of the tension sensor is less than or equal to a second preset tension threshold.

4. The non-contact temperature sensor anti-aliasing device according to claim 1, characterized in that, The sensor protective housing is made of modified polyethylene material; The sensor protective housing includes a cover portion and a main body portion; The opening section and the main body section are closed by a push-pull lock and bolts; The vibrator is fixed to the opening section with bolts. The end of the main body near the opening portion is used to house the temperature sensor, while the end away from the opening portion is shaped like a flared mouth.

5. The non-contact temperature sensor anti-aliasing device according to claim 4, characterized in that, The temperature sensor is connected to the main body by two ring-mounted cross brackets; The ring-mounted cross bracket includes an outer ring and an inner ring; The diameter of the outer ring is equal to the inner diameter of the main body portion; The diameter of the inner ring is equal to the outer diameter of the temperature sensor.

6. The non-contact temperature sensor anti-aliasing device according to claim 1, characterized in that, The removal module also includes a purging unit; The controller is also electrically connected to the purging unit; the controller is configured to activate the purging unit to purge the temperature sensor at the same time as or after the vibration is activated.

7. The non-contact temperature sensor anti-aliasing device according to claim 1, characterized in that, The controller is also electrically connected to the discharge port electrically controlled valve; The controller is configured to acquire the real-time measurement value of the tension sensor when there is no action signal from the electrically controlled valve at the discharge port. The vibrator is activated when the real-time measured value of the tension sensor is greater than or equal to a first preset tension threshold.

8. The non-contact temperature sensor anti-aliasing device according to claim 1, characterized in that, The base fixes the odor removal device as a whole to one side below the horizontal plane of the concrete mixer's discharge port.

9. A method for removing anomalies from a non-contact temperature sensor, characterized in that, The controller used in the non-contact temperature sensor removal device according to any one of claims 1 to 8 comprises: When it is determined that the discharge port electrical control valve has no action signal, the real-time measurement value of the tension sensor is obtained; If the real-time measured value is greater than or equal to the first preset tensile threshold, the vibrator is activated, and the real-time measured value of the tensile sensor is continuously acquired during the operation of the vibrator. If the real-time measured value of the tension sensor is less than or equal to the second preset tension threshold, the vibrator is stopped.

10. The method for removing anomalies from a non-contact temperature sensor according to claim 9, characterized in that, The starting vibrator includes: Adjust the vibration frequency of the vibrator to the resonant frequency of the sensor protective housing.

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