Torque signal real-time sampling and transmitting device based on MEMS material

Abstract

The invention discloses a torque signal real-time sampling and transmitting device based on an MEMS material, relates to the technical field of torque signal measurement, and aims to solve the problems of low torque measurement precision and high stability in a high-temperature environment in the prior art. The device comprises a torque sampling module, a signal processing module, a transmitting module, a heat dissipation module and a power supply module, the torque sampling module is connected with the signal processing module and is used for acquiring a torque signal and transmitting the torque signal to the signal processing module; the signal processing module is connected with the transmitting module and is used for processing the torque signal and then transmitting the torque signal to the transmitting module; the transmitting module is used for transmitting the torque signal processed by the signal processing module in real time in a wireless mode; and the heat dissipation module is respectively contacted with the torque sampling module, the signal processing module and the transmitting module and is used for providing heat dissipation for each module. The torque measuring device has the advantage of improving the torque measuring precision and stability.

Description

Technical Field

[0001] This invention relates to the field of torque signal measurement technology, and more specifically, to a real-time sampling and transmission device for torque signals based on MEMS materials. Background Technology

[0002] With the rapid development of MEMS technology, real-time sampling and transmission devices for torque signals based on MEMS materials have emerged, bringing new solutions for the measurement and transmission of torque signals. MEMS materials have significant advantages such as small size, light weight, low power consumption, high integration and high sensitivity, enabling chip-level torque measurement and making torque measurement more accurate.

[0003] In high-temperature environments such as aero-engines and industrial furnaces, it is necessary to measure and transmit the torque signal of the equipment in real time to ensure the normal operation and safety monitoring of the equipment. However, the performance of existing real-time torque signal sampling and transmission devices based on MEMS materials will change significantly in high-temperature environments. High-temperature environments will interfere with the signal, resulting in reduced torque measurement accuracy and poor stability.

[0004] In view of this, we propose a real-time torque signal sampling and transmission device based on MEMS materials. Summary of the Invention

[0005] The purpose of this invention is to provide a real-time torque signal sampling and transmission device based on MEMS materials, which aims to solve the problems of reduced torque measurement accuracy and instability in existing technologies under high-temperature environments.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a real-time torque signal sampling and transmission device based on MEMS materials, the device comprising a torque sampling module, a signal processing module, a transmission module, a heat dissipation module and a power supply module;

[0007] The torque sampling module is connected to the signal processing module and is used to collect torque signals and transmit them to the signal processing module.

[0008] The signal processing module is connected to the transmission module and is used to process the torque signal and transmit it to the transmission module.

[0009] The transmission module is used to wirelessly transmit the torque signal processed by the signal processing module in real time.

[0010] The heat dissipation module is in contact with the torque sampling module, the signal processing module and the transmission module respectively, and is used to provide heat dissipation for each module;

[0011] The power supply module is electrically connected to the torque sampling module, signal processing module, transmission module and heat dissipation module respectively, and is used to provide power support for each module.

[0012] Preferably, the torque sampling module includes a torque-sensitive element and a ceramic package structure;

[0013] The torque sensing element is encapsulated inside the ceramic packaging structure and is used to collect torque signals and transmit them. The torque sensing element is made of MEMS material.

[0014] The ceramic encapsulation structure is made of alumina ceramic material with a thickness of 0.5-2mm.

[0015] Preferably, the signal processing module includes a signal conditioning unit, a temperature compensation circuit, and a temperature sensor;

[0016] The signal conditioning unit is used to amplify and filter the torque signal;

[0017] The temperature sensor monitors changes in ambient temperature in real time.

[0018] The temperature compensation circuit employs a compensation algorithm to compensate the torque signal processed by the signal conditioning unit based on the ambient temperature monitored by the temperature sensor.

[0019] Preferably, the heat dissipation module includes a heat sink and a cooling fan;

[0020] The heat sink is made of copper or aluminum, and its contact area with the torque sampling module, signal processing module and transmitter module is not less than 80% of the surface area of ​​each module. The thickness of the heat sink is 2-5mm.

[0021] The cooling fan is located on the side of the heat sink away from each module.

[0022] Preferably, the transmitter module includes a wireless transmission chip and an antenna;

[0023] The wireless transmission chip is a high-temperature resistant chip used to transmit torque signals in real time;

[0024] The antenna is connected to the wireless transmission chip to enhance the wireless signal transmission and reception capabilities.

[0025] Preferably, the power module includes a high-temperature resistant battery and a power management chip;

[0026] The high-temperature resistant battery is a lithium thionyl chloride battery with a capacity of not less than 5000mAh.

[0027] The power management chip is used to manage the charging and discharging of the high-temperature resistant battery and has overcharge, over-discharge, and overcurrent protection functions.

[0028] Preferably, when the signal conditioning unit amplifies the torque signal, it uses the formula... Calculate the magnification factor, where, For feedback resistor, For input resistance, The current ambient temperature;

[0029] When the signal conditioning unit filters the torque signal, it uses the formula... In the formula, This is the filtered output signal. For input signal, The filtering time constant is For complex frequency domain variables, This is a high-temperature correction factor. This represents the current ambient temperature.

[0030] Preferably, the temperature compensation circuit uses the following compensation algorithm: In the formula, The compensated torque value, For the measured torque value, For temperature coefficient, The current ambient temperature. For reference temperature, This is the torque correction factor.

[0031] Compared with the prior art, the beneficial effects of the present invention are:

[0032] 1. This invention, through the temperature compensation circuit of the signal processing module, employs a compensation algorithm containing temperature coefficient and torque correction coefficient, a temperature correction amplification and filtering formula of the signal conditioning unit, and a high-temperature resistant wireless transmission chip and power module, effectively offsets the influence of high temperature on resistance, capacitance parameters and component performance, and solves the problem of reduced torque measurement accuracy and deteriorated stability in existing technologies under high-temperature environments.

[0033] 2. In this invention, the heat sink of the heat dissipation module is made of copper or aluminum, and the contact area with each module is not less than 80% of its surface area. It can also be used with a cooling fan to dissipate heat efficiently, avoiding the performance of each module due to overheating. The power management chip of the power module has overcharge, over-discharge and overcurrent protection functions, ensuring the stability of power supply, thereby improving the overall stability of the device.

[0034] 3. In this invention, the antenna of the transmitter module can enhance the transmission and reception capabilities of wireless signals. The wireless transmission chip uses a high-temperature resistant chip that can transmit torque signals in real time under complex environments, reducing signal loss and attenuation during transmission and ensuring that the torque signal can be transmitted stably and accurately, thereby indirectly guaranteeing the validity of the measurement results. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the architecture of the present invention. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0037] Example 1

[0038] like Figure 1 As shown, a real-time torque signal sampling and transmission device based on MEMS materials is disclosed. The device includes a torque sampling module, a signal processing module, a transmission module, a heat dissipation module, and a power supply module.

[0039] The torque sampling module is connected to the signal processing module and is used to collect torque signals and transmit them to the signal processing module in order to accurately collect the raw torque signals and provide basic data for subsequent processing.

[0040] The signal processing module is connected to the transmitter module and is used to process the torque signal and transmit it to the transmitter module. This enables the optimization of the original torque signal, the elimination of noise and environmental interference, and the improvement of signal quality, providing a reliable signal source for accurate transmission.

[0041] The transmitter module is used to wirelessly transmit the torque signal processed by the signal processing module in real time, so as to realize the wireless real-time transmission of the torque signal, get rid of the limitation of wired connection, and improve the flexibility and applicability of the device.

[0042] The heat dissipation module is in contact with the torque sampling module, signal processing module and transmission module respectively, and is used to provide heat dissipation for each module so as to dissipate the heat generated by each module during operation in a timely manner, avoid performance degradation or damage caused by high temperature, and ensure the stability of the device during long-term operation.

[0043] The power supply module is electrically connected to the torque sampling module, signal processing module, transmission module, and heat dissipation module, respectively, to provide power support to each module and ensure that each module works normally.

[0044] Furthermore, the torque sampling module includes a torque-sensitive element and a ceramic package structure;

[0045] The torque sensing element is encapsulated inside a ceramic package structure to collect and transmit torque signals. The torque sensing element is made of MEMS material to achieve high-precision torque signal acquisition.

[0046] The ceramic encapsulation structure is made of alumina ceramic material with a thickness of 0.5-2mm. This allows the alumina ceramic encapsulation to have the characteristics of high temperature resistance and good insulation, protecting sensitive components from environmental interference. At the same time, the thickness of 0.5-2mm achieves a balance between protection and signal transmission.

[0047] Furthermore, the signal processing module includes a signal conditioning unit, a temperature compensation circuit, and a temperature sensor;

[0048] The signal conditioning unit is used to amplify and filter the torque signal, so as to amplify the weak torque signal and filter noise, thereby improving the signal-to-noise ratio.

[0049] The temperature sensor monitors changes in ambient temperature in real time, so as to provide accurate temperature parameters for the temperature compensation circuit.

[0050] The temperature compensation circuit employs a compensation algorithm to compensate the torque signal processed by the signal conditioning unit based on the ambient temperature monitored by the temperature sensor. This allows the temperature compensation circuit, combined with the compensation algorithm, to correct the influence of temperature on torque measurement, ensuring measurement accuracy under fluctuating temperature conditions.

[0051] Furthermore, the heat dissipation module includes a heat sink and a cooling fan;

[0052] The heat sink is made of copper or aluminum, and its contact area with the torque sampling module, signal processing module and transmitter module is not less than 80% of the surface area of ​​each module. The thickness of the heat sink is 2-5mm, so that the heat sink of high thermal conductivity copper or aluminum can efficiently absorb heat through large-area contact. The 2-5mm thickness takes into account heat dissipation efficiency and device miniaturization, thereby further ensuring the stability of device operation.

[0053] The cooling fan is positioned on the side of the heatsink furthest from each module, and the cooling fan further enhances airflow to accelerate heat dissipation.

[0054] Furthermore, the transmitter module includes a wireless transmission chip and an antenna;

[0055] The wireless transmission chip uses a high-temperature resistant chip to send torque signals in real time, ensuring that the wireless transmission chip can operate normally in high-temperature environments.

[0056] The antenna is connected to the wireless transmission chip to enhance the transmission and reception capabilities of the wireless signal. The antenna further enhances the wireless signal strength, extends the transmission distance, and ensures real-time and stable transmission of the torque signal.

[0057] Furthermore, the power module includes a high-temperature resistant battery and a power management chip;

[0058] The high-temperature resistant battery uses lithium thionyl chloride batteries with a capacity of not less than 5000mAh to provide long-lasting power with high-capacity, high-temperature resistant batteries and meet the needs of long-term monitoring.

[0059] The power management chip is used to manage the charging and discharging of high-temperature resistant batteries. It has overcharge, over-discharge, and overcurrent protection functions. The power management chip also prevents abnormal battery damage, improves power safety and lifespan, and further increases the stability of the device.

[0060] Furthermore, when the signal conditioning unit amplifies the torque signal, it uses the formula... Calculate the magnification factor, where, For feedback resistor, For input resistance, Given the current ambient temperature, this formula is based on the characteristic that the resistive element's properties change with temperature at high temperatures, leading to a change in the fundamental amplification factor. By establishing the relationship between temperature and amplification factor, a temperature factor is introduced. This formula allows for the introduction of a temperature factor to correct for amplification deviations caused by changes in resistance characteristics at high temperatures, ensuring the stability of signal amplification and improving signal amplification accuracy.

[0061] When the signal conditioning unit filters the torque signal, it uses the formula... In the formula, This is the filtered output signal. For input signal, The filtering time constant is For complex frequency domain variables, This is a high-temperature correction factor. Given the current ambient temperature, this formula assumes that in high-temperature environments, the parameters of capacitance and resistance will change, leading to changes in the time constant. An offset occurs, and the amount of offset in the time constant is related to the ambient temperature. The relationship is approximately linear, i.e., the time constant at high temperatures. ,in, The high-temperature correction coefficient is used to substitute the time constant at high temperature into the filtering formula at room temperature to obtain this formula. This allows the high-temperature correction coefficient to compensate for the changes in capacitor and resistor parameters with temperature, avoid the shift of the filtering time constant, ensure stable filtering effect, and effectively remove noise.

[0062] Furthermore, the formula for the compensation algorithm used in the temperature compensation circuit is as follows: In the formula, The compensated torque value, For the measured torque value, For temperature coefficient, The current ambient temperature. For reference temperature, This is the torque correction factor. This formula is based on the phenomenon that temperature changes cause errors in torque measurement values. The error is related to the temperature difference. Furthermore, it was found that the degree of temperature influence on the measurement varied depending on the magnitude of the torque; therefore, a torque correction factor was introduced. Combined with temperature coefficient This formula is derived to realize the combined effect of temperature difference and torque value on error, through the temperature coefficient. and torque correction factor Precise correction of measured values ​​significantly reduces torque measurement errors caused by temperature fluctuations, improving the measurement accuracy and reliability of the device in complex environments.

[0063] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. A real-time torque signal sampling and transmission device based on MEMS materials, characterized in that, The device includes a torque sampling module, a signal processing module, a transmission module, a heat dissipation module, and a power supply module; The torque sampling module is connected to the signal processing module and is used to collect torque signals and transmit them to the signal processing module. The signal processing module is connected to the transmission module and is used to process the torque signal and transmit it to the transmission module. The transmission module is used to wirelessly transmit the torque signal processed by the signal processing module in real time. The heat dissipation module is in contact with the torque sampling module, the signal processing module and the transmission module respectively, and is used to provide heat dissipation for each module; The power supply module is electrically connected to the torque sampling module, signal processing module, transmission module and heat dissipation module respectively, and is used to provide power support for each module.

2. The real-time torque signal sampling and transmission device based on MEMS materials according to claim 1, characterized in that, The torque sampling module includes a torque-sensitive element and a ceramic packaging structure; The torque sensing element is encapsulated inside the ceramic packaging structure and is used to collect torque signals and transmit them. The torque sensing element is made of MEMS material. The ceramic encapsulation structure is made of alumina ceramic material with a thickness of 0.5-2mm.

3. The real-time torque signal sampling and transmission device based on MEMS materials according to claim 1, characterized in that, The signal processing module includes a signal conditioning unit, a temperature compensation circuit, and a temperature sensor; The signal conditioning unit is used to amplify and filter the torque signal; The temperature sensor monitors changes in ambient temperature in real time. The temperature compensation circuit employs a compensation algorithm to compensate the torque signal processed by the signal conditioning unit based on the ambient temperature monitored by the temperature sensor.

4. The real-time torque signal sampling and transmission device based on MEMS materials according to claim 1, characterized in that, The heat dissipation module includes heat sinks and a cooling fan; The heat sink is made of copper or aluminum, and its contact area with the torque sampling module, signal processing module and transmitter module is not less than 80% of the surface area of ​​each module. The thickness of the heat sink is 2-5mm. The cooling fan is located on the side of the heat sink away from each module.

5. The real-time torque signal sampling and transmission device based on MEMS materials according to claim 1, characterized in that, The transmitter module includes a wireless transmission chip and an antenna; The wireless transmission chip is a high-temperature resistant chip used to transmit torque signals in real time; The antenna is connected to the wireless transmission chip to enhance the wireless signal transmission and reception capabilities.

6. The real-time sampling and transmission device for torque signals based on MEMS materials according to claim 1, characterized in that, The power module includes a high-temperature resistant battery and a power management chip; The high-temperature resistant battery is a lithium thionyl chloride battery with a capacity of not less than 5000mAh. The power management chip is used to manage the charging and discharging of the high-temperature resistant battery and has overcharge, over-discharge, and overcurrent protection functions.

7. The real-time torque signal sampling and transmission device based on MEMS materials according to claim 3, characterized in that, When the signal conditioning unit amplifies the torque signal, it uses the formula... Calculate the magnification factor, where, For feedback resistor, For input resistance, The current ambient temperature; When the signal conditioning unit filters the torque signal, it uses the formula... In the formula, This is the filtered output signal. For input signal, The filtering time constant is For complex frequency domain variables, This is a high-temperature correction factor. This represents the current ambient temperature.

8. The real-time torque signal sampling and transmission device based on MEMS materials according to claim 3, characterized in that, The temperature compensation circuit uses the following compensation algorithm: In the formula, The compensated torque value, For the measured torque value, For temperature coefficient, The current ambient temperature. For reference temperature, This is the torque correction factor.

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