CN115165179B - Torque detection device - Google Patents
Torque detection device Download PDFInfo
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- CN115165179B CN115165179B CN202210764039.5A CN202210764039A CN115165179B CN 115165179 B CN115165179 B CN 115165179B CN 202210764039 A CN202210764039 A CN 202210764039A CN 115165179 B CN115165179 B CN 115165179B
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- 238000001514 detection method Methods 0.000 title claims abstract description 55
- 239000002184 metal Substances 0.000 claims abstract description 122
- 239000000758 substrate Substances 0.000 claims abstract description 56
- 230000000694 effects Effects 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 18
- 230000005684 electric field Effects 0.000 abstract description 7
- 230000008878 coupling Effects 0.000 abstract description 6
- 238000010168 coupling process Methods 0.000 abstract description 6
- 238000005859 coupling reaction Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 9
- 230000015556 catabolic process Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008054 signal transmission Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
Abstract
The application discloses a torque detection device, which comprises: a first substrate, a second substrate, a torque sensor, a sensor-side circuit member, and a control-side circuit member; 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 oppositely arranged to form a capacitance effect; the torque sensor is arranged on the rotating body to be detected and is connected with the sensor side circuit component; the second substrate is fixed on the rotating body to be detected. The torque detection device provided by the application can realize wireless transmission of electric energy and signals through electric field coupling, improves the energy transmission efficiency and has lower cost.
Description
Technical Field
The application 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 moment on various rotating or non-rotating mechanical components. The torque sensor converts the physical change in torque force into an accurate electrical signal. The torque sensor is used for sensing and detecting the torsion moment in the movement process, so that the movement state can be fed back to a great extent, the control of the mechanical movement process is facilitated for people, the working moment of the operation part is reasonably distributed, and the energy consumption in the movement process is more accurately controlled and distributed; in a reasonable range, the conditions of extrusion, collision and the like of the operation parts are reduced, the operation parts are protected, and the service life of the operation parts 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. Alternating current is applied to a primary coil at the side of a control system to excite and generate an alternating magnetic field, and an induction current is generated after a secondary coil at the side of a torque sensor induces the alternating magnetic field; the torque sensor acquires electric energy, and simultaneously, a load is applied to the secondary side coil of the torque sensor to modulate an alternating signal, so that a voltage signal sensed by the primary side coil changes, and the signal transmission return control system of the torque sensor is realized.
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 transferring energy by the coil is low; 2. the coil winding mode shown in fig. 1 has high requirements on the process and the material of coil winding and high cost.
Disclosure of Invention
The application provides a torque detection device which can realize wireless transmission of electric energy and signals through electric field coupling, improves energy transmission efficiency and is low in cost.
According to an aspect of the present application, there is provided a torque detection apparatus including: a first substrate, a second substrate, a torque sensor, a sensor-side circuit member, and a control-side circuit member; 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 oppositely arranged to form a capacitance effect; the torque sensor is arranged on the rotating body to be detected and is connected with the sensor side circuit component; the second substrate is fixed on the rotating body to be detected.
In addition, the first substrate and the second substrate are arranged opposite to each other; the second substrate includes a first opposing face adjacent to the first substrate, the first metal plate being disposed on the first opposing face; the first substrate includes a second opposing face adjacent to the second substrate, and the second metal plate is disposed on the second opposing face.
In addition, the second substrate further includes a first surface opposite to the first opposing surface, and the sensor-side circuit member is provided on the first surface; the first substrate further includes a second face opposite to the second opposite face, and the control-side circuit component is disposed on the second face.
In addition, when the rotating body to be detected rotates, 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; the control side circuit part is further 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 processes the torque detection signal by a preset signal and inputs the processed signal into the torque sensor, and the torque sensor returns torsion data of the rotating body to the control side circuit part.
In addition, the control side circuit component comprises an alternating current power supply, a control system and a first modulation circuit; the control system and the alternating current power supply are 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 carrying out resonance compensation on the torque detection signal and transmitting the torque detection signal after resonance compensation 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 is used for transmitting 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 also used for carrying out resonance compensation on the sensor data signal and transmitting 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 subjected to resonance compensation, recovering 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 resonance-compensated torque detection signal, recovering 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 is 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 component 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 carrying out 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 also connected with the rectifier bridge, and is also used for transmitting the torque detection signal after the re-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 transmitting the modulated sensor data signal to the second resonance compensation circuit; the second resonance compensation circuit is further used for performing resonance compensation on the modulated sensor data signal and sending 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 integrally rotate 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 with respect 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 application has at least the following advantages:
the first metal plate is arranged on the first opposite surface and is connected with the sensor side circuit component, the second metal plate is arranged on the second opposite surface and is connected with the control side circuit component, so that the opposite first metal plate and second metal plate can be equivalent to a capacitor connected in series between the sensor side circuit component and the control side circuit component 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 in an electric field coupling mode, the problem of performance degradation caused by eddy current effect of a coil implementation mode is avoided, and the energy transmission efficiency is improved; in addition, 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 description in this section is not intended to identify key or critical features of the embodiments of the application or to delineate the scope of the application. Other features of the present application will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a torque detecting device in the background art;
FIG. 2 is a schematic diagram of a torque detecting device according to a first embodiment of the present application;
FIG. 3 is a system block diagram of a torque detection device according to a first embodiment of the present application;
FIG. 4 is a system block diagram of a torque detection device according to a second embodiment of the present application;
fig. 5 is a system block diagram of a torque detecting device according to a third embodiment of the present application.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise 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 1
Fig. 2 is a schematic structural diagram of a torque detecting device according to a first embodiment of the present application, and fig. 3 is a system block diagram of a torque detecting device according to a first embodiment of the present application, please refer to fig. 2 and 3 together, including:
a first substrate 1, a second substrate 2, a torque sensor 3, a sensor-side circuit member 4, and a control-side circuit member 5; the second substrate 2 is provided with a first metal plate 6, and the first metal plate 6 is connected to the sensor-side circuit member 4; the first substrate 1 is provided with a second metal plate 7, and the second metal plate 7 is connected with the control side circuit member 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 rotary body 100 to be detected, and is connected to the sensor-side circuit member 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 disposed opposite to each other; 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 opposing face 101 adjacent to the second substrate 2, and the second metal plate 7 is disposed on the second opposing face 101.
Referring further to fig. 2, the second substrate 2 further includes a first face 202 opposite to the first opposing face 201, and the sensor-side circuit member 4 is provided on the first face 202; the first substrate 1 further includes a second surface 102 opposite to the second opposing surface 101, and the control-side circuit member 5 is provided on the second surface 102.
It can be understood that when the rotary body 100 rotates, the control side circuit member 5 transmits electric power to the sensor side circuit member 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 for sending 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 part 4 performs a predetermined signal processing on the torque detection signal, and inputs the signal to the torque sensor 3, and the torque sensor 3 returns the torque data of the rotating body to the control-side circuit part 5.
The second substrate 2 is fixedly connected to the rotating body 100, so that the second substrate 2 rotates together with the rotating body 100 when the rotating body 100 rotates; the first substrate 1 is rotationally 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 will be understood that in practical application, the second substrate 2 may be fixedly mounted on the rotating body 100, the first substrate 1 may be fixedly mounted on other devices on the motor, and the mounting device of the first substrate 1 is not limited. Since the control-side circuit part 5 is mounted on the first substrate 1 and the control-side circuit part 5 needs to supply electric power to the sensor-side circuit part 4 and the torque sensor 3, that is, the control-side circuit part 5 is usually provided with a wiring connected to a power source, the control-side circuit part 5 is fixed while the rotating body 100 rotates by the arrangement of this structure, the occurrence of the winding is avoided, and the reliability of the torque detecting device is improved.
It should be noted that, when the rotating body 100 rotates, the orthographic projection area of the first metal plate 6 on the second metal plate 7 remains unchanged. Since the first metal plate 6 and the second metal plate 7 can be equivalently the capacitance connected in series between the sensor-side circuit part 4 and the control-side circuit part 5, and the magnitude of the capacitance is related to the opposing area of the opposing metal plates, by the arrangement of this structure, the opposing area of the first metal plate 6 and the second metal plate 7 is kept unchanged when the rotary body 100 rotates, thereby ensuring the stability of electric power and signal transmission.
It should be noted that, in the embodiment of the present application, the rotating body 100 may be cylindrical, the second substrate 2 may be a ring sleeved on the rotating body 100, the first metal plate 6 may be an annular ring structure, and the second metal plate 7 may also be an annular ring structure; of course, in practical applications, when the front projection area of the first metal plate 6 on the second metal plate 7 is kept unchanged during rotation of the rotating body 100, both the first metal plate 6 and the second metal plate 7 may be provided in any shape, and the shape of the first metal plate 6 and the second metal plate 7 is not limited to the ring shape in the embodiment of the present application.
Compared with the related art, the embodiment of the application has at least the following advantages: by providing the first metal plate 6 on the first opposing surface 201, the first metal plate 6 is connected to the sensor-side circuit member 4, and providing the second metal plate 7 on the second opposing surface 101, the second metal plate 7 is connected to the control-side circuit member 5, so that the opposing first metal plate 6 and second metal plate 7 can be equivalent to a capacitance connected in series between the sensor-side circuit member 4 and the control-side circuit member 5, and thus, the electric energy and signals generated by the control-side circuit member 5 and the signals fed back by the sensor-side circuit member 4 can be transferred between the two metal plates, that is, wireless electric energy transmission is realized by using an electric field coupling mode, the problem of performance degradation caused by the eddy current effect of the coil embodiment is avoided, and the energy transmission efficiency is improved; in addition, 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 detecting device according to a second embodiment of the present application, which is a further explanation of the foregoing embodiment, specifically explaining: 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 source 51 is configured to provide an ac power source signal, and the first modulation circuit 53 is configured to modulate the control signal and the ac power source 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 provided 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 appreciated that since the torque detection signal has energy loss when passing through the second metal plate 7, the energy transfer efficiency can be further improved by resonance-compensating the torque detection signal before transmitting the torque detection signal to the second metal plate 7.
Referring further 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 the torque detection signal after the 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 after the resonance compensation to the first demodulation circuit 55; the first demodulation circuit 55 is configured to demodulate the sensor data signal after resonance compensation, restore the torsion data, and send the torsion data to the control system 52. Since the digital signal is transmitted by the torque sensor 3, the digital signal cannot be transmitted in the circuit, so the sensor data signal transmitted by the torque sensor 3 is modulated first to be transmitted to the control system 52, and the control system 52 needs to identify the original digital signal transmitted by the torque sensor 3, so by providing the first demodulation circuit 55, the modulated sensor data signal can be restored to the digital signal for identification by the control system 52.
Compared with the related art, the embodiment of the application has at least the following advantages: by providing the first metal plate 6 on the first opposing surface 201, the first metal plate 6 is connected to the sensor-side circuit member 4, and providing the second metal plate 7 on the second opposing surface 101, the second metal plate 7 is connected to the control-side circuit member 5, so that the opposing first metal plate 6 and second metal plate 7 can be equivalent to a capacitance connected in series between the sensor-side circuit member 4 and the control-side circuit member 5, and thus, the electric energy and signals generated by the control-side circuit member 5 and the signals fed back by the sensor-side circuit member 4 can be transferred between the two metal plates, that is, wireless electric energy transmission is realized by using an electric field coupling mode, the problem of performance degradation caused by the eddy current effect of the coil embodiment is avoided, and the energy transmission efficiency is improved; in addition, 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 detecting device according to a third embodiment of the present application, which is a further explanation of the foregoing embodiment, specifically explaining: the specific structure of the sensor-side circuit member 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 disposed between the first metal plate 6 and the torque sensor 3, and the second demodulation circuit 41 is configured to demodulate the resonance-compensated torque detection signal, restore a control signal, and transmit 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, the rectifier bridge 42 being configured to rectify the torque detection signal into a direct current signal, and transmit the direct current signal to the torque sensor 3 to supply electric power to the torque sensor 3.
With continued reference to fig. 5, the sensor-side circuit component 4 further includes a second resonance compensation circuit 43; the second resonance compensation circuit 43 is connected with the first metal plate 6 and the second demodulation circuit 41, and the second resonance compensation circuit 43 is used for carrying out resonance compensation on the resonance-compensated torque detection signal again and transmitting 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 the re-resonance compensation to the rectifier bridge 42. It can be appreciated that since the torque detection signal has energy loss when passing through the first metal plate 6, the energy transfer efficiency can be further improved by resonance-compensating 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 to 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 used for resonance compensation of the modulated sensor data signal and transmits 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, the sensor data signal sent by the torque sensor 3 is modulated in the second modulation circuit 44 to be transmitted to the control system 52.
Compared with the related art, the embodiment of the application has at least the following advantages: by providing the first metal plate 6 on the first opposing surface 201, the first metal plate 6 is connected to the sensor-side circuit member 4, and providing the second metal plate 7 on the second opposing surface 101, the second metal plate 7 is connected to the control-side circuit member 5, so that the opposing first metal plate 6 and second metal plate 7 can be equivalent to a capacitance connected in series between the sensor-side circuit member 4 and the control-side circuit member 5, and thus, the electric energy and signals generated by the control-side circuit member 5 and the signals fed back by the sensor-side circuit member 4 can be transferred between the two metal plates, that is, wireless electric energy transmission is realized by using an electric field coupling mode, the problem of performance degradation caused by the eddy current effect of the coil embodiment is avoided, and the energy transmission efficiency is improved; in addition, 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 easy understanding, the following describes the operation of the torque detecting device in this embodiment:
1. the ac power supply 51 supplies an ac power supply signal, and the control system 52 modulates the ac power supply signal 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 control-side transmission signal Ss1 is applied to the second metal plate 7 opposed to the control-side circuit part 5 through 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 rectifies the Ss2 into a direct current signal through the rectifier bridge 42 to supply power to the torque sensor 3 through the resonance compensation circuit 2, and demodulates and restores the Ss2 to the control signal Sc1 at the control system side through the second demodulation circuit 41 to input the control signal Sc1 into the torque sensor 3, thereby realizing the purpose of controlling the torque sensor 3.
3. After the torque sensor 3 receives the control signal Sc1 from the control system 52, a corresponding command is executed, and a sensor data signal Sc2 is returned, for example, sc1 is a command for reading the sensing data of the torque sensor 3, and Sc2 is the sensing data of the torque sensor 3.
4. The sensor data signal Sc2 is modulated into a signal Ss3 by the second modulating circuit 44, the control system 52 senses a signal Ss4 corresponding to the signal Ss3 through the opposite second metal plate 7, and demodulates and restores the sensor data signal Sc2 through the first demodulating circuit 55, so that the control system 52 completes one sensor data reading.
The above embodiments do not limit the scope of the present application. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the scope of the present application.
Claims (9)
1. A torque detection device, characterized by comprising: a first substrate, a second substrate, a torque sensor, a sensor-side circuit member, and a control-side circuit member;
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 oppositely arranged to form a capacitance effect;
the torque sensor is arranged on the rotating body to be detected and is connected with the sensor side circuit component; the second substrate is fixed on the rotating body to be detected;
when the rotating body to be detected rotates, the control side circuit part transmits electric energy to the sensor side circuit part and the torque sensor through the first metal plate and the second metal plate;
the control side circuit part is further 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 processes the torque detection signal through a preset signal and inputs the processed signal into the torque sensor, and the torque sensor returns torsion data of the rotating body to the control side circuit part;
the control side circuit component comprises an alternating current power supply, a control system and a first modulation circuit;
the control system and the alternating current power supply are 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;
the control side circuit part further includes a first resonance compensation circuit provided between the first modulation circuit and the second metal plate;
the control side circuit part further includes a first demodulation circuit provided between the control system and the first resonance compensation circuit;
the sensor side circuit part comprises a second demodulation circuit and a rectifier bridge;
the second demodulation circuit is arranged between the first metal plate and the torque sensor, and is used for demodulating the resonance-compensated torque detection signal, recovering 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 is 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;
the sensor-side circuit part further includes a second resonance compensation circuit connected to the first metal plate and the second demodulation circuit;
the sensor-side circuit component further includes a second modulation circuit connected with the torque sensor and the second resonance compensation circuit.
2. The torque detecting apparatus according to claim 1, wherein the first substrate is disposed opposite to the second substrate;
the second substrate includes a first opposing face adjacent to the first substrate, the first metal plate being disposed on the first opposing face; the first substrate includes a second opposing face adjacent to the second substrate, and the second metal plate is disposed on the second opposing face.
3. The torque detecting apparatus according to claim 2, wherein the second substrate further includes a first face opposite to the first opposing face, the sensor-side circuit component being provided on the first face;
the first substrate further includes a second face opposite to the second opposite face, and the control-side circuit component is disposed on the second face.
4. The torque detecting device according to claim 1, wherein,
the first resonance compensation circuit is used for carrying out resonance compensation on the torque detection signal and transmitting the resonance-compensated torque detection signal to the second metal plate.
5. The torque detecting device according to claim 4, wherein,
the torque sensor is used for transmitting 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 also used for carrying out resonance compensation on the sensor data signal and transmitting 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.
6. The torque detecting device according to claim 5, wherein,
the second resonance compensation circuit is used for carrying out resonance compensation on the resonance-compensated torque detection signal again and transmitting the resonance-compensated torque detection signal again to the second demodulation circuit;
the second resonance compensation circuit is also connected with the rectifier bridge, and is also used for transmitting the torque detection signal after the re-resonance compensation to the rectifier bridge.
7. The torque detecting device according to claim 6, wherein,
the second modulation circuit is used for modulating the sensor data signal and transmitting the modulated sensor data signal to the second resonance compensation circuit;
the second resonance compensation circuit is further used for performing resonance compensation on the modulated sensor data signal and sending the modulated sensor data signal subjected to resonance compensation to the first metal plate.
8. The torque detecting apparatus according to any one of claims 1 to 7, characterized in that the second base plate is rotatably connected to the rotating body to be detected so as to integrally rotate with the rotating body to be detected;
the first substrate is fixed on the rotating body to remain stationary with respect to the rotating body to be detected while the rotating body to be detected rotates.
9. The torque detecting apparatus according to any one of claims 1 to 7, wherein an orthographic projection area of the first metal plate on the second metal plate remains unchanged when 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115165179A CN115165179A (en) | 2022-10-11 |
| CN115165179B true CN115165179B (en) | 2023-12-12 |
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| CN202210764039.5A Active CN115165179B (en) | 2022-06-29 | 2022-06-29 | Torque detection device |
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