High response frequency dynamic torque sensor
The high-frequency dynamic torque sensor addresses slow response and precision issues in traditional sensors by employing a magnetic encoder and temperature compensation, ensuring rapid and accurate torque measurement across varying temperatures.
Patent Information
- Application Number
- CN202422181555.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-06
AI Technical Summary
Traditional torque sensors have slow response speed, making it difficult to capture rapidly changing torque signals, and the accuracy is greatly affected by temperature changes.
The design is equipped with a magnetic encoder combined with elastic components, equipped with a temperature compensation unit, including a signal processing module and a coil spring structure, to quickly respond to torque changes and compensate for temperature effects.
It realizes high response frequency and high-precision torque measurement, which is suitable for high-speed rotation conditions, improves durability and reliability, and ensures consistency and accuracy of measurement results under different temperature environments.
Smart Images
Figure CN223107098U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of dynamic torque detection, and particularly relates to a high-response-frequency dynamic torque sensor. Background Technique
[0002] A torque sensor is an instrument used to measure the torque on a rotating shaft. Torque refers to the torsional moment exerted on an object and is commonly used to evaluate the load conditions in a power transmission system. Torque sensors are widely used in multiple fields such as automobiles, aerospace, mechanical manufacturing, and motion control. Traditional torque measurement methods include strain gauge torque sensors, optoelectronic torque sensors, magnetic induction torque sensors, etc. Each method has its own characteristics and scope of application, but there are certain limitations in terms of response speed, accuracy, cost, etc., such as:
[0003] The response time of traditional torque sensors is relatively long, making it difficult to capture rapidly changing torque signals; due to the influence of the physical characteristics of the sensor itself and environmental factors (such as temperature changes), traditional sensors have limitations in terms of accuracy; temperature changes will affect the output signal of the sensor, resulting in measurement errors.
[0004] Therefore, the utility model aims to provide a new type of torque sensor with a fast response speed and high measurement accuracy to solve the above problems. Content of the Utility Model
[0005] To solve the above technical problems, the utility model is realized through the following technical solutions:
[0006] The utility model is a high-response-frequency dynamic torque sensor, which includes a sensor body. The sensor body includes a shaft body located at its center, an elastic element adaptively installed on the periphery of the shaft body, a magnetic encoder in contact with the end of the shaft body, a signal processing module connected to the magnetic encoder through a wire, and a temperature compensation unit arranged inside the signal processing module;
[0007] The signal processing module is arranged outside the sensor body, and an interface is embedded at the tail of the sensor body.
[0008] The utility model is further set as that the elastic element is a helical spring structure.
[0009] The utility model is further set as that the magnetic encoder includes a pair of magnets and at least one magnetic sensitive element. The magnets are installed on the shaft body, and the magnetic sensitive element is installed inside the sensor body.
[0010] The utility model is further set as that the signal processing module includes:
[0011] An amplifier for amplifying the weak electrical signal output by the magnetic encoder;
[0012] A filter for removing noise interference;
[0013] And an analog-to-digital converter for converting an analog signal into a digital signal for subsequent data processing and analysis.
[0014] The utility model is further configured such that the temperature compensation unit includes at least one temperature sensor and a corresponding compensation circuit.
[0015] The utility model is further configured such that one end of the shaft body is connected to a driving device through a coupling, and the other end thereof is connected to a load through a coupling.
[0016] The utility model has the following beneficial effects:
[0017] 1. In the utility model, through the combined design of a magnetic encoder and an elastic element in the sensor body, it can quickly respond to torque changes, can perform dynamic torque measurement under high-speed rotation conditions, and is suitable for application scenarios that require quick response; the magnetic encoder includes a pair of magnets and at least one magnetosensitive element, which can reflect torque changes by detecting magnetic field changes, realizing non-contact torque measurement and improving the durability and reliability of the sensor.
[0018] 2. In the utility model, by setting a temperature compensation unit, it can monitor the working temperature of the sensor and adjust signal processing parameters according to temperature changes, ensuring the consistency and accuracy of measurement results in different temperature environments and expanding the working temperature range of the sensor; the elastic element adopts a spiral spring structure, which can deform according to the torque magnitude, providing a sensitive and reliable deformation detection mechanism to ensure that torque changes can be accurately captured.
[0019] Of course, it is not necessary for any product implementing the utility model to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following will briefly introduce the drawings required for describing the embodiments. Obviously, the drawings in the following description are only some embodiments of the utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0021] Figure 1 It is a schematic diagram of the front part of the overall structure of the utility model.
[0022] Figure 2 It is a schematic diagram of the rear part of the overall structure of the utility model.
[0023] Figure 3 It is a schematic diagram of the end part of the overall structure of the utility model.
[0024] Figure 4 This is a schematic diagram of the principle of the present utility model.
[0025] In the attached drawings, the list of components represented by each label is as follows:
[0026] 1. Sensor main body; 11. Shaft body; 12. Elastic element; 13. Magnetic encoder; 14. Signal processing module; 15. Temperature compensation unit; 16. Interface. Specific embodiments
[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the attached drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.
[0028] Embodiment
[0029] Please refer to Figures 1-4 , the present utility model is a high-response frequency dynamic torque sensor, including a sensor main body 1. The sensor main body 1 includes a shaft body 11 located at its center, an elastic element 12 adaptively installed on the circumferential side of the shaft body 11, a magnetic encoder 13 in contact with the end of the shaft body 11, a signal processing module 14 connected to the magnetic encoder 13 through a wire, and a temperature compensation unit 15 arranged inside the signal processing module 14.
[0030] The overall design of the sensor proposed by this technical solution enables it to perform dynamic torque measurement under high-speed rotation conditions, with high response frequency and high precision. Further description of this technical solution is as follows:
[0031] The elastic element 12 is a spiral spring structure. One end of the shaft body 11 is connected to a driving device through a coupling, and the other end is connected to a load through a coupling. The shaft body 11 is the core part of the sensor, used to transmit torque, and is made of a high-strength material to ensure sufficient mechanical strength and good torque transmission performance. Both ends of the shaft body 11 are connected to the driving device and the load through couplings. When torque is applied, the elastic element 12 will deform according to the magnitude of the torque, and this deformation is detected by other components and converted into an electrical signal.
[0032] The signal processing module 14 is arranged outside the sensor main body 1. The signal processing module 14 includes: an amplifier for amplifying the weak electrical signal output by the magnetic encoder 13; a filter for removing noise interference; and an analog-to-digital converter for converting the analog signal into a digital signal for subsequent data processing and analysis;
[0033] The signal processing module 14 is responsible for processing the raw signals generated by the magnetic encoder 13 and converting them into digital signals that can be used for subsequent analysis. Its amplifier amplifies the weak electrical signals output by the magnetic encoder 13 to a level suitable for further processing. The filter removes high-frequency noise and other interferences in the amplified signals to ensure the purity of the signals. The analog-to-digital converter (ADC) converts the analog signals into digital signals for digital processing and storage.
[0034] An interface 16 is embedded at the tail of the sensor body 1. The interface 16 is used to connect to an external power supply, a data acquisition system, or other related devices. The interface 16 includes a power input, a signal output, a communication port, etc.
[0035] The temperature compensation unit 15 includes at least one temperature sensor and a corresponding compensation circuit. The temperature compensation unit 15 is used to compensate for signal drift or errors caused by temperature changes. The temperature sensor detects the operating temperature of the sensor, and the compensation circuit automatically adjusts the signal processing parameters according to the feedback of the temperature sensor to ensure the accuracy of the measurement results at different temperatures.
[0036] The magnetic encoder 13 includes a pair of magnets and at least one magnetic sensitive element. The magnets are installed on the shaft body 11, and the magnetic sensitive elements are installed inside the sensor body 1. The magnets are fixed on the shaft body 11 and move as the shaft body 11 rotates. The magnetic sensitive elements are installed inside the sensor body 1 and indirectly measure the change in the rotation angle of the shaft body 11 by detecting the change in the magnetic field generated by the magnets, thereby calculating the torque value.
[0037] Working Principle
[0038] Torque transmission: Both ends of the shaft body 11 are connected to the driving device and the load through couplings respectively. When the driving device rotates, the torque is transmitted to the shaft body 11.
[0039] Deformation detection: The torque causes the elastic element 12 on the shaft body 11 to deform, and this deformation causes the position of the magnet fixed on it to change relative to the magnetic sensitive element.
[0040] Signal conversion: The magnetic sensitive element detects the change in the magnetic field and converts it into an electrical signal.
[0041] Signal processing: After the electrical signal is processed by the amplifier, filter, and analog-to-digital converter in the signal processing module 14, it becomes a digital signal that is easy to analyze.
[0042] Temperature compensation: Throughout the process, the temperature compensation unit 15 continuously monitors the operating temperature of the sensor and adjusts the signal processing parameters according to the temperature change to keep the measurement accuracy unaffected by temperature.
[0043] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.
[0044] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, according to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the relevant technical field can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.
Claims
1. A high-response-frequency dynamic torque sensor, characterized in that: It includes a sensor body (1), and the sensor body (1) includes a shaft body (11) located at its center, an elastic element (12) adaptively mounted on the circumferential side of the shaft body (11), a magnetic encoder (13) in contact with the end of the shaft body (11), a signal processing module (14) connected to the magnetic encoder (13) via a wire, and a temperature compensation unit (15) provided inside the signal processing module (14); The signal processing module (14) is arranged outside the sensor body (1), and an interface (16) is embedded at the tail of the sensor body (1).
2. The high-response-frequency dynamic torque sensor according to claim 1, wherein: The elastic element (12) is of a helical spring structure.
3. The high-response-frequency dynamic torque sensor according to claim 1, wherein: The magnetic encoder (13) includes a pair of magnets and at least one magnetic sensitive element. The magnets are mounted on the shaft body (11), and the magnetic sensitive element is mounted inside the sensor body (1).
4. The high-response-frequency dynamic torque sensor according to claim 1, characterized in that: The signal processing module (14) includes: an amplifier for amplifying the weak electrical signal output by the magnetic encoder (13); a filter for removing noise interference; and an analog-to-digital converter for converting the analog signal into a digital signal for subsequent data processing and analysis.
5. The high-response-frequency dynamic torque sensor according to claim 1, wherein: The temperature compensation unit (15) includes at least one temperature sensor and a corresponding compensation circuit.
6. The high-response-frequency dynamic torque sensor according to claim 1, characterized in that: One end of the shaft body (11) is connected to a driving device through a coupling, and the other end is connected to a load through a coupling.