CN115165179A - Torque detection device - Google Patents
Torque detection device Download PDFInfo
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- CN115165179A CN115165179A CN202210764039.5A CN202210764039A CN115165179A CN 115165179 A CN115165179 A CN 115165179A CN 202210764039 A CN202210764039 A CN 202210764039A CN 115165179 A CN115165179 A CN 115165179A
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- 238000012545 processing Methods 0.000 claims description 6
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/02—Rotary-transmission dynamometers
- G01L3/04—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft
- G01L3/10—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating
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Abstract
The invention discloses a torque detection device, comprising: a first substrate, a second substrate, a torque sensor, a sensor-side circuit component, a control-side circuit component; the second substrate is provided with a first metal plate, and the first metal plate is connected with the sensor-side circuit component; the first substrate is provided with a second metal plate, the second metal plate is connected with the control side circuit component, and the first metal plate and the second metal plate are arranged oppositely to form a capacitance effect; the torque sensor is arranged on a rotating body to be detected and is connected with the sensor side circuit part; the second substrate is fixed on the rotating body to be detected. The torque detection device provided by the invention can realize wireless transmission of electric energy and signals through electric field coupling, improves the transmission efficiency of energy and has lower cost.
Description
Technical Field
The invention relates to the technical field of torque detection of rotating bodies, in particular to a torque detection device.
Background
Torque sensors are the detection of the perception of torsional moments on various rotating or non-rotating mechanical components. The torque sensor converts the physical change of the torque force into an accurate electrical signal. The torque sensor senses and detects the torsional moment in the motion process, so that the motion state can be fed back to a great extent, people can conveniently control the mechanical motion process, the working moment of the running part is reasonably distributed, and the energy consumption in the motion process is more accurately controlled and distributed; within a reasonable range, the extrusion, collision and other conditions of the operating components are reduced, the operating components are protected, and the service life of the operating components is prolonged.
In the related art, as shown in fig. 1, a torque sensor is mounted on a rotating shaft for detecting torque applied to the rotating shaft. Applying alternating current to a primary coil on the side of a control system to excite the primary coil to generate an alternating magnetic field, and inducing current after a secondary coil on the side of a torque sensor induces the alternating magnetic field; the torque sensor obtains electric energy, and meanwhile, a load is applied to a secondary coil on the side of the torque sensor to modulate an alternating signal, so that a voltage signal sensed by a primary coil is changed, and the signal of the torque sensor is transmitted back to the control system.
However, the inventors found that the prior art has at least the following problems: 1. due to the eddy current effect, when the rotating body is metal, the efficiency of the coil for transferring energy is low; 2. the coil winding mode shown in fig. 1 has high requirements on the process and materials of coil winding and high cost.
Disclosure of Invention
The invention provides a torque detection device which can realize wireless transmission of electric energy and signals through electric field coupling, improves the transmission efficiency of energy and has lower cost.
According to an aspect of the present invention, there is provided a torque detecting device including: a first substrate, a second substrate, a torque sensor, a sensor-side circuit component, a control-side circuit component; the second substrate is provided with a first metal plate connected with the sensor-side circuit component; the first substrate is provided with a second metal plate, the second metal plate is connected with the control side circuit component, and the first metal plate and the second metal plate are arranged oppositely to form a capacitance effect; the torque sensor is arranged on a rotating body to be detected and is connected with the sensor side circuit part; the second substrate is fixed on the rotating body to be detected.
In addition, the first substrate and the second substrate are arranged oppositely; the second substrate includes a first opposite surface adjacent to the first substrate, the first metal plate being disposed on the first opposite surface; the first substrate includes a second opposite surface adjacent to the second substrate, and the second metal plate is disposed on the second opposite surface.
In addition, the second substrate further includes a first surface opposite to the first opposing surface, the sensor-side circuit part being disposed on the first surface; the first substrate further includes a second face opposite to the second opposing face, the control-side circuit part being disposed on the second face.
In addition, when the rotating body to be detected rotates, the control-side circuit component transmits electric energy to the sensor-side circuit component and the torque sensor through the first metal plate and the second metal plate; the control-side circuit part is also configured to send a torque detection signal, which is transmitted to the sensor-side circuit part via the first metal plate and the second metal plate; the sensor side circuit part performs preset signal processing on the torque detection signal and then inputs the torque detection signal into the torque sensor, and the torque sensor returns the torsion data of the rotating body to the control side circuit part.
In addition, the control side circuit part comprises an alternating current power supply, a control system and a first modulation circuit; the control system and the alternating current power supply are both connected with the first modulation circuit, and the first modulation circuit is connected with the second metal plate; the control system is used for sending a control signal, the alternating current power supply is used for providing an alternating current power supply signal, and the first modulation circuit is used for modulating the control signal and the alternating current power supply signal to obtain the torque detection signal.
In addition, the control-side circuit part further includes a first resonance compensation circuit; the first resonance compensation circuit is arranged between the first modulation circuit and the second metal plate, and is used for performing resonance compensation on the torque detection signal and transmitting the resonance-compensated torque detection signal to the second metal plate.
In addition, the control-side circuit part further includes a first demodulation circuit provided between the control system and the first resonance compensation circuit; the torque sensor sends a sensor data signal to the first metal plate after receiving the torque detection signal subjected to the preset signal processing, and the first resonance compensation circuit is further used for performing resonance compensation on the sensor data signal and sending the sensor data signal subjected to the resonance compensation to the first demodulation circuit; the first demodulation circuit is used for demodulating the sensor data signal after resonance compensation, restoring the torsion data and sending the torsion data to the control system.
In addition, the sensor side circuit part includes a second demodulation circuit, a rectifier bridge; the second demodulation circuit is arranged between the first metal plate and the torque sensor and is used for demodulating the torque detection signal after resonance compensation, restoring the control signal and transmitting the control signal to the torque sensor; the rectifier bridge is arranged between the first metal plate and the torque sensor and used for rectifying the torque detection signal into a direct current signal and transmitting the direct current signal to the torque sensor so as to provide electric energy for the torque sensor.
In addition, the sensor-side circuit part further includes a second resonance compensation circuit; the second resonance compensation circuit is connected with the first metal plate and the second demodulation circuit, and is used for performing resonance compensation on the resonance-compensated torque detection signal again and transmitting the resonance-compensated torque detection signal to the second demodulation circuit; the second resonance compensation circuit is further connected with the rectifier bridge, and the second resonance compensation circuit is further used for transmitting the torque detection signal after the secondary resonance compensation to the rectifier bridge.
In addition, the sensor-side circuit part further includes a second modulation circuit; the second modulation circuit is connected with the torque sensor and the second resonance compensation circuit; the second modulation circuit is used for modulating the sensor data signal and sending the modulated sensor data signal to the second resonance compensation circuit; the second resonance compensation circuit is further configured to perform resonance compensation on the modulated sensor data signal, and send the modulated and resonance-compensated sensor data signal to the first metal plate.
In addition, the second substrate is rotationally connected with the rotating body to be detected so as to rotate integrally with the rotating body to be detected; the first substrate is fixed on the rotating body to be detected so as to be kept stationary relative to the rotating body to be detected when the rotating body to be detected rotates.
In addition, when the rotating body rotates, the orthographic projection area of the first metal plate on the second metal plate is kept unchanged.
Compared with the related art, the embodiment of the invention has at least the following advantages:
the first metal plate is arranged on the first opposite surface and connected with the sensor side circuit component, the second metal plate is arranged on the second opposite surface and connected with the control side circuit component, so that the opposite first metal plate and the second metal plate can be equivalent to capacitors connected between the sensor side circuit component and the control side circuit component in series to form a capacitance effect, electric energy and signals sent by the control side circuit component and signals fed back by the sensor side circuit component can be transmitted between the two metal plates, namely, wireless electric energy transmission is realized by using an electric field coupling mode, the problem of performance reduction caused by an eddy current effect of a coil implementation mode is avoided, and the transmission efficiency of energy is improved; in addition, the wireless transmission of electric energy and signals can be realized through the opposite metal plates, so that the cost of the torque detection device is low.
It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present invention, nor do they necessarily limit the scope of the invention. Other features of the present invention will become apparent from the following description.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a torque detecting device in the prior art;
FIG. 2 is a schematic structural diagram of a torque detection device according to an embodiment of the present invention;
FIG. 3 is a system diagram of a torque detection device according to an embodiment of the present invention;
FIG. 4 is a system diagram of a torque detection device according to a second embodiment of the present invention;
fig. 5 is a system block diagram of a torque detection device according to a third embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in other sequences than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example one
Fig. 2 is a schematic structural diagram of a torque detection device according to an embodiment of the present invention, and fig. 3 is a system block diagram of a torque detection device according to an embodiment of the present invention, please refer to fig. 2 and fig. 3 together, which includes:
a first substrate 1, a second substrate 2, a torque sensor 3, a sensor-side circuit component 4, a control-side circuit component 5; a first metal plate 6 is provided on the second substrate 2, and the first metal plate 6 is connected to the sensor-side circuit component 4; a second metal plate 7 is arranged on the first substrate 1, and the second metal plate 7 is connected with the control side circuit part 5; the first metal plate 6 and the second metal plate 7 are arranged oppositely to form a capacitance effect; the torque sensor 3 is fixed to the rotating body 100 to be detected, and is connected to the sensor-side circuit part 4; the second substrate 2 is fixed to the rotating body 100 to be inspected.
Specifically, the first substrate 1 and the second substrate 2 are arranged oppositely; the second substrate 2 includes a first opposing face 201 adjacent to the first substrate 1, the first metal plate 6 being disposed on the first opposing face 201; the first substrate 1 includes a second opposite surface 101 adjacent to the second substrate 2, and the second metal plate 7 is disposed on the second opposite surface 101.
Referring further to fig. 2, the second substrate 2 further includes a first face 202 opposite to the first opposing face 201, the sensor-side circuit part 4 being disposed on the first face 202; the first substrate 1 further includes a second face 102 opposite to the second opposing face 101, and the control-side circuit part 5 is disposed on the second face 102.
It is understood that, when the rotating body 100 rotates, the control-side circuit part 5 transmits electric power to the sensor-side circuit part 4 and the torque sensor 3 through the first metal plate 6 and the second metal plate 7; the control-side circuit part 5 is also used to send a torque detection signal, which is transmitted to the sensor-side circuit part 4 via the first metal plate 6 and the second metal plate 7; the sensor-side circuit unit 4 performs a predetermined signal processing on the torque detection signal and inputs the processed signal to the torque sensor 3, and the torque sensor 3 returns the torque data of the rotating body to the control-side circuit unit 5.
The second substrate 2 is fixedly connected to the rotating body 100, so that when the rotating body 100 rotates, the second substrate 2 and the rotating body 100 rotate together; the first substrate 1 is rotatably connected to the rotating body 100, that is, when the rotating body 100 rotates, the first substrate 1 and the rotating body 100 do not rotate together and relatively keep a rotating state, it can be understood that, in practical applications, the second substrate 2 may be fixedly mounted on the rotating body 100, and the first substrate 1 may be fixedly mounted with other devices on the motor, and the mounting device of the first substrate 1 is not limited. Since the control-side circuit component 5 is mounted on the first substrate 1, and the control-side circuit component 5 needs to provide power for the sensor-side circuit component 4 and the torque sensor 3, that is, the control-side circuit component 5 usually has a wire connected to a power supply, the control-side circuit component 5 is fixed when the rotating body 100 rotates by the arrangement of the structure, so that the occurrence of wire winding is avoided, and the reliability of the torque detection device is improved.
It is worth mentioning that the orthographic projection area of the first metal plate 6 on the second metal plate 7 is kept constant while the rotating body 100 rotates. Since the first metal plate 6 and the second metal plate 7 can be equivalent to a capacitor connected in series between the sensor-side circuit part 4 and the control-side circuit part 5, and the capacitance value is related to the opposing area of the opposing metal plates, the opposing area of the first metal plate 6 and the second metal plate 7 is kept constant when the rotating body 100 rotates, thereby ensuring the stability of power and signal transmission.
It should be further noted that, in the embodiment of the present application, the rotating body 100 may be cylindrical, the second substrate 2 may be a circular ring sleeved on the rotating body 100, the first metal plate 6 may be an annular ring-shaped structure, and the second metal plate 7 may also be an annular ring-shaped structure; of course, in practical applications, in the case that the orthographic projection area of the first metal plate 6 on the second metal plate 7 is kept unchanged when the rotating body 100 rotates, both the first metal plate 6 and the second metal plate 7 can be set to any shape, and are not limited to the ring shape, and the shape of the first metal plate 6 and the second metal plate 7 is not limited in the embodiment of the present application.
Compared with the related art, the embodiment of the invention has at least the following advantages: the first metal plate 6 is arranged on the first opposite surface 201, the first metal plate 6 is connected with the sensor side circuit component 4, the second metal plate 7 is arranged on the second opposite surface 101, and the second metal plate 7 is connected with the control side circuit component 5, so that the first metal plate 6 and the second metal plate 7 which are opposite to each other can be equivalent to a capacitor which is connected between the sensor side circuit component 4 and the control side circuit component 5 in series, and thus, electric energy and signals sent by the control side circuit component 5 and signals fed back by the sensor side circuit component 4 can be transmitted between the two metal plates, that is, wireless electric energy transmission is realized by using an electric field coupling mode, the problem of performance reduction caused by an eddy current effect of a coil embodiment mode is avoided, and the energy transmission efficiency is improved; in addition, the wireless transmission of electric energy and signals can be realized through the opposite metal plates, so that the cost of the torque detection device is low.
Example two
Fig. 4 is a system block diagram of a torque detection device according to a second embodiment of the present invention, which is a further explanation of the foregoing embodiment, and specifically illustrates: the specific structure of the control-side circuit part 5 is as shown in fig. 4:
the control-side circuit part 5 includes an alternating-current power supply 51, a control system 52, and a first modulation circuit 53; the control system 52 and the alternating current power supply 51 are both connected with a first modulation circuit 53; the control system 52 is configured to send a control signal, the ac power supply 51 is configured to provide an ac power signal, and the first modulation circuit 53 is configured to modulate the control signal and the ac power signal to obtain a torque detection signal.
With continued reference to fig. 4, the control-side circuit part 5 further includes a first resonance compensation circuit 54; the first resonance compensation circuit 54 is disposed between the first modulation circuit 53 and the second metal plate 7, and the first resonance compensation circuit 54 is configured to perform resonance compensation on the torque detection signal and transmit the resonance-compensated torque detection signal to the second metal plate 7. It can be understood that since the torque detection signal has energy loss while passing through the second metal plate 7, the energy transfer efficiency can be further improved by performing resonance compensation on the torque detection signal before transmitting the torque detection signal to the second metal plate 7.
With further reference to fig. 4, the control-side circuit part 5 further includes a first demodulation circuit 55, the first demodulation circuit 55 being disposed between the control system 52 and the first resonance compensation circuit 54; the torque sensor 3 sends a sensor data signal to the first metal plate 6 after receiving a torque detection signal subjected to preset signal processing, and the first resonance compensation circuit 54 is further configured to perform resonance compensation on the sensor data signal and send the sensor data signal subjected to resonance compensation to the first demodulation circuit 55; the first demodulation circuit 55 is configured to demodulate the resonance-compensated sensor data signal, restore the torsion data, and send the data to the control system 52. Since the torque sensor 3 sends a digital signal, the digital signal cannot be transmitted in the circuit, the sensor data signal sent by the torque sensor 3 is modulated to be transmitted to the control system 52, and the control system 52 needs to identify the original digital signal sent by the torque sensor 3, so that the modulated sensor data signal can be restored to the digital signal for the control system 52 to identify by the first demodulation circuit 55.
Compared with the related art, the embodiment of the invention has at least the following advantages: the first metal plate 6 is arranged on the first opposite surface 201, the first metal plate 6 is connected with the sensor side circuit component 4, the second metal plate 7 is arranged on the second opposite surface 101, and the second metal plate 7 is connected with the control side circuit component 5, so that the first metal plate 6 and the second metal plate 7 which are opposite to each other can be equivalent to a capacitor which is connected between the sensor side circuit component 4 and the control side circuit component 5 in series, and thus, electric energy and signals sent by the control side circuit component 5 and signals fed back by the sensor side circuit component 4 can be transmitted between the two metal plates, that is, wireless electric energy transmission is realized by using an electric field coupling mode, the problem of performance reduction caused by an eddy current effect of a coil embodiment mode is avoided, and the energy transmission efficiency is improved; in addition, the wireless transmission of electric energy and signals can be realized through the opposite metal plates, so that the cost of the torque detection device is low.
EXAMPLE III
Fig. 5 is a system block diagram of a torque detection device according to a third embodiment of the present invention, which is a further explanation of the foregoing embodiment, and specifically illustrates: the specific structure of the sensor-side circuit part 4 is as shown in fig. 5:
the sensor-side circuit part 4 includes a second demodulation circuit 41, a rectifier bridge 42; the second demodulation circuit 41 is arranged between the first metal plate 6 and the torque sensor 3, and the second demodulation circuit 41 is used for demodulating the resonance-compensated torque detection signal, restoring a control signal and transmitting the control signal to the torque sensor 3; a rectifier bridge 42 is provided between the first metal plate 6 and the torque sensor 3, and the rectifier bridge 42 is configured to rectify the torque detection signal into a dc signal and transmit the dc signal to the torque sensor 3 to supply power to the torque sensor 3.
With continued reference to fig. 5, the sensor-side circuit part 4 further includes a second resonance compensation circuit 43; the second resonance compensation circuit 43 is connected to the first metal plate 6 and the second demodulation circuit 41, and the second resonance compensation circuit 43 is configured to perform resonance compensation on the resonance-compensated torque detection signal again and transmit the resonance-compensated torque detection signal to the second demodulation circuit 41; the second resonance compensation circuit 43 is further connected to the rectifier bridge 42, and the second resonance compensation circuit 43 is further configured to transmit the torque detection signal after resonance compensation again to the rectifier bridge 42. It can be understood that since the torque detection signal has energy loss while passing through the first metal plate 6, the energy transfer efficiency can be further improved by performing resonance compensation on the torque detection signal before transmitting the torque detection signal to the first metal plate 6.
Referring further to fig. 5, the sensor-side circuit part 4 further includes a second modulation circuit 44; the second modulation circuit 44 is connected with the torque sensor 3 and the second resonance compensation circuit 43; the second modulation circuit 44 is configured to modulate the sensor data signal and send the modulated sensor data signal to the second resonance compensation circuit 43; the second resonance compensation circuit 43 is also configured to perform resonance compensation on the modulated sensor data signal, and to transmit the modulated and resonance-compensated sensor data signal to the first metal plate 6. Since the torque sensor 3 sends a digital signal, the digital signal cannot be transmitted in the circuit, so the sensor data signal sent by the torque sensor 3 is modulated in the second modulation circuit 44 for transmission to the control system 52.
Compared with the related art, the embodiment of the invention has at least the following advantages: the first metal plate 6 is arranged on the first opposite surface 201, the first metal plate 6 is connected with the sensor side circuit component 4, the second metal plate 7 is arranged on the second opposite surface 101, and the second metal plate 7 is connected with the control side circuit component 5, so that the first metal plate 6 and the second metal plate 7 which are opposite to each other can be equivalent to a capacitor which is connected between the sensor side circuit component 4 and the control side circuit component 5 in series, and thus, electric energy and signals sent by the control side circuit component 5 and signals fed back by the sensor side circuit component 4 can be transmitted between the two metal plates, that is, wireless electric energy transmission is realized by using an electric field coupling mode, the problem of performance reduction caused by an eddy current effect of a coil embodiment mode is avoided, and the energy transmission efficiency is improved; in addition, the wireless transmission of electric energy and signals can be realized through the opposite metal plates, so that the cost of the torque detection device is low.
For the sake of easy understanding, the operation of the torque detection device in the present embodiment is specifically described below:
1. the ac power supply 51 supplies an ac power supply signal, and the control system 52 modulates the ac power supply signal with the data signal Sc1 to be transmitted to the sensor-side circuit part 4 by the first modulation circuit 53 to obtain a control-side transmission signal Ss1, and the Ss1 is applied to the second metal plate 7 facing the control-side circuit part 5 via the first resonance compensation circuit 54.
2. After receiving the signal Ss2 coupled by the Ss1 electric field, the first metal plate 6 opposite to the sensor side circuit part 4 passes through the resonance compensation circuit 2, on one hand, the rectifier bridge 42 rectifies the Ss2 into a direct current signal to supply power to the torque sensor 3 for operation, on the other hand, the second demodulation circuit 41 demodulates and restores the Ss2 into a control signal Sc1 on the control system side, and the control signal Sc1 is input into the torque sensor 3, thereby achieving the purpose of controlling the torque sensor 3.
3. After receiving the control signal Sc1 from the control system 52, the torque sensor 3 executes a corresponding command, and returns a sensor data signal Sc2, for example, if Sc1 is a command for reading sensed data of the torque sensor 3, sc2 is sensed data of the torque sensor 3.
4. The sensor data signal Sc2 modulates the sensing data into a signal Ss3 through the second modulation circuit 44, the control system 52 senses a signal Ss4 corresponding to the signal Ss3 through the second metal plate 7, and demodulates and restores the sensor data signal Sc2 through the first demodulation circuit 55, so that the control system 52 completes one-time data reading of the sensor.
The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made in accordance with design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. A torque detection device, comprising: a first substrate, a second substrate, a torque sensor, a sensor-side circuit component, a control-side circuit component;
the second substrate is provided with a first metal plate, and the first metal plate is connected with the sensor-side circuit component; the first substrate is provided with a second metal plate, the second metal plate is connected with the control side circuit component, and the first metal plate and the second metal plate are arranged oppositely to form a capacitance effect;
the torque sensor is arranged on a rotating body to be detected and is connected with the sensor side circuit part; the second substrate is fixed on the rotating body to be detected.
2. The torque detection device according to claim 1, wherein the first base plate is disposed opposite to the second base plate;
the second substrate includes a first opposite surface adjacent to the first substrate, the first metal plate being disposed on the first opposite surface; the first substrate includes a second opposite surface adjacent to the second substrate, and the second metal plate is disposed on the second opposite surface.
3. The torque detecting device according to claim 2, wherein the second substrate further includes a first face opposite to the first opposing face, the sensor-side circuit part being provided on the first face;
the first substrate further includes a second face opposite to the second opposing face, the control-side circuit part being disposed on the second face.
4. The torque detecting device according to claim 1, wherein the control-side circuit part transmits electric power to the sensor-side circuit part and the torque sensor through the first metal plate and the second metal plate when the rotating body to be detected rotates;
the control-side circuit part is also configured to send a torque detection signal, which is transmitted to the sensor-side circuit part via the first metal plate and the second metal plate; the sensor side circuit part performs preset signal processing on the torque detection signal and then inputs the torque detection signal into the torque sensor, and the torque sensor returns the torsion data of the rotating body to the control side circuit part.
5. The torque detection device according to claim 4, wherein the control-side circuit part includes an alternating-current power supply, a control system, and a first modulation circuit;
the control system and the alternating current power supply are both connected with the first modulation circuit, and the first modulation circuit is connected with the second metal plate;
the control system is used for sending a control signal, the alternating current power supply is used for providing an alternating current power supply signal, and the first modulation circuit is used for modulating the control signal and the alternating current power supply signal to obtain the torque detection signal.
6. The torque sensing device of claim 5, wherein the control-side circuit component further comprises a first resonance compensation circuit;
the first resonance compensation circuit is arranged between the first modulation circuit and the second metal plate, and is used for performing resonance compensation on the torque detection signal and transmitting the resonance-compensated torque detection signal to the second metal plate.
7. The torque detecting device according to claim 6, wherein the control-side circuit part further includes a first demodulation circuit provided between the control system and the first resonance compensation circuit;
the torque sensor sends a sensor data signal to the first metal plate after receiving the torque detection signal subjected to the preset signal processing, and the first resonance compensation circuit is further used for performing resonance compensation on the sensor data signal and sending the sensor data signal subjected to the resonance compensation to the first demodulation circuit;
the first demodulation circuit is used for demodulating the sensor data signal after resonance compensation and sending the restored sensor data signal to the control system.
8. The torque detection device according to claim 7, wherein the sensor-side circuit part includes a second demodulation circuit, a rectifier bridge;
the second demodulation circuit is arranged between the first metal plate and the torque sensor and is used for demodulating the torque detection signal after resonance compensation, restoring the control signal and transmitting the control signal to the torque sensor;
the rectifier bridge is arranged between the first metal plate and the torque sensor and used for rectifying the torque detection signal into a direct current signal and transmitting the direct current signal to the torque sensor so as to provide electric energy for the torque sensor.
9. The torque detecting device according to claim 8, wherein the sensor-side circuit part further includes a second resonance compensation circuit;
the second resonance compensation circuit is connected with the first metal plate and the second demodulation circuit, and is used for performing resonance compensation on the resonance-compensated torque detection signal again and transmitting the resonance-compensated torque detection signal to the second demodulation circuit;
the second resonance compensation circuit is further connected with the rectifier bridge, and the second resonance compensation circuit is further used for transmitting the torque detection signal after the secondary resonance compensation to the rectifier bridge.
10. The torque detecting device according to claim 9, wherein the sensor-side circuit part further includes a second modulation circuit;
the second modulation circuit is connected with the torque sensor and the second resonance compensation circuit;
the second modulation circuit is used for modulating the sensor data signal and sending the modulated sensor data signal to the second resonance compensation circuit;
the second resonance compensation circuit is further configured to perform resonance compensation on the modulated sensor data signal, and send the modulated and resonance-compensated sensor data signal to the first metal plate.
11. The torque detection device according to any one of claims 1 to 10, wherein the second base plate is rotatably connected to the rotation body to be detected so as to rotate integrally with the rotation body to be detected;
the first base plate is fixed to the rotating body to be held stationary with respect to the rotating body to be detected while the rotating body to be detected rotates.
12. The torque detection device according to any one of claims 1 to 10, wherein an orthographic area of the first metal plate on the second metal plate is kept constant while the rotating body rotates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210764039.5A CN115165179B (en) | 2022-06-29 | 2022-06-29 | Torque detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210764039.5A CN115165179B (en) | 2022-06-29 | 2022-06-29 | Torque detection device |
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