A rotational speed and torque sensor and a transmission
By setting strain gauges, control components, and transmitting tubes on the rotating parts, mechanical deformation is converted into optical signals, solving the problem of inaccurate torque measurement at high speeds in rotating equipment and achieving high-precision and sensitive torque measurement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING XINYUHANG MEASUREMENT & CONTROL TECH CO LTD
- Filing Date
- 2025-08-18
- Publication Date
- 2026-06-26
Smart Images
Figure CN224416128U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of sensor technology, and in particular to a speed and torque sensor and a transmission device. Background Technology
[0002] A speed and torque sensor is a device installed between a drive unit and a rotating equipment. The speed and torque sensor includes a housing, a rotor, a speed measurement module, and a torque measurement module. The rotor is rotatably mounted inside the housing and is connected to both the drive unit and the rotating equipment.
[0003] The speed measurement module and the torque measurement module are located inside the housing. The speed measurement module is used to measure the rotational speed of the rotor, and the torque measurement module is used to measure the torque of the rotor.
[0004] In related technologies, when the rotational speed of rotating equipment is too high, there is a problem of inaccurate torque measurement. Utility Model Content
[0005] This application provides a speed and torque sensor and a transmission device, which can solve the problem of inaccurate torque measurement when the speed of rotating equipment is too high.
[0006] To achieve the above objectives, this application adopts the following technical solution:
[0007] In a first aspect, this application provides a speed and torque sensor, comprising:
[0008] A housing having a receiving cavity;
[0009] A rotating component is rotatably disposed within the receiving cavity;
[0010] Strain gauges are attached to the outer peripheral wall of the rotating component;
[0011] A control element is disposed on the rotating component, and the control element is electrically connected to the strain gauge;
[0012] A transmitting tube is disposed on the rotating component and electrically connected to the control component. At least two transmitting tubes are arranged in parallel, and the at least two transmitting tubes are spaced apart along the circumferential direction of the rotating component.
[0013] A receiving tube is disposed in the housing, along the radial direction of the rotating member, with the first receiving end of the receiving tube and the first transmitting end of the transmitting tube spaced apart and facing each other;
[0014] A receiving board is disposed in the housing and electrically connected to the receiving tube. The receiving board is used to output the optical signal received by the receiving tube as a preset output signal.
[0015] In some embodiments, multiple receiving tubes are arranged in parallel, and the multiple receiving tubes are spaced apart along the circumferential direction of the rotating member.
[0016] In some implementations, it also includes:
[0017] A power supply component is disposed on the rotating component along the axial direction of the rotating component, and the power supply component is located on the side of the strain gauge opposite to the transmitting tube;
[0018] The power supply component is electrically connected to the control component, and the power supply component is used to provide power to the control component.
[0019] In some embodiments, the power supply component includes:
[0020] The first coil is arranged around the outer periphery of the rotating component and is electrically connected to the control component;
[0021] The second coil is arranged around the outer periphery of the first coil and connected to the inner wall of the housing; the first coil is electrically connected to the power source.
[0022] The first coil and the second coil are spaced apart along the radial direction of the rotating component.
[0023] In some implementations, it also includes:
[0024] A first base is sleeved on the outer periphery of the rotating member, and the first coil is sleeved on the first base, with the first coil located on the side of the first base away from the rotating member;
[0025] The second base is sleeved on the outer periphery of the first base and is connected to the housing and the second coil respectively. The second coil is located on the side of the second base away from the housing.
[0026] In some embodiments, the second base includes a first sub-base and a second sub-base connected together, with the first base sandwiched between the first sub-base and the second sub-base along the axial direction of the rotating member.
[0027] In some implementations, it also includes:
[0028] A rotational speed measuring component is disposed on the rotating component, and the rotational speed measuring component is used to measure the rotational speed of the rotating component.
[0029] In some embodiments, the rotational speed measuring component includes:
[0030] An encoder disk is fixedly connected to the rotating member. Along the axial direction of the rotating member, the encoder disk is located at the end of the strain gauge away from the transmitting tube. The encoder disk has multiple measuring parts and multiple blocking parts arranged alternately. Along the circumferential direction of the rotating member, the multiple measuring parts are arranged at intervals, and along the circumferential direction of the rotating member, the multiple blocking parts are arranged at intervals.
[0031] An optical coupler sensor is disposed in the receiving cavity;
[0032] Along the radial direction of the rotating component, the optocoupler sensor and the encoder disk are spaced apart;
[0033] Alternatively, along the axial direction of the rotating component, the optocoupler sensor and the encoder disk are spaced apart.
[0034] In some implementations, it includes:
[0035] A support member is fixedly connected to the housing and is spaced apart from the rotating member along the radial direction of the rotating member.
[0036] The receiving tube is mounted on the housing via the support member.
[0037] Secondly, this application provides a transmission device, including a speed and torque sensor.
[0038] This speed-torque sensor, with its rotating component and housing, allows the rotating component to rotate relative to the housing under external force. By incorporating strain gauges, control components, and a transmitting tube, the mechanical deformation of the rotating component is converted into an electrical signal by the control component, which in turn is converted into an optical signal by the transmitting tube. In this configuration, by placing the strain gauges, control components, and transmitting tube all within the rotating component, their rotation is synchronized with the rotation of the rotating component. By placing a receiving tube within the housing, the transmitting tube periodically emits optical signals to the receiving tube during rotation. A receiving plate outputs the received optical signals as a preset output signal, thereby measuring the torque of the rotating component. Increasing the number of transmitting tubes allows at least two tubes to simultaneously emit optical signals to the receiving tube during rotation, reducing signal loss. In some embodiments, increasing the number of transmitting tubes also ensures that if some tubes fail, others connected in parallel can continue operating normally, thus improving the accuracy of torque measurement.
[0039] Therefore, the speed and torque sensor provided in the embodiments of this application can solve the problem of inaccurate torque measurement when the rotational speed of the rotating equipment is too high. Attached Figure Description
[0040] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0041] Figure 1 A schematic diagram of the main structure of the speed and torque sensor provided in the embodiments of this application;
[0042] Figure 2 for Figure 1 Sectional view of section AA;
[0043] Figure 3 This is an exploded structural diagram of the speed and torque sensor provided in an embodiment of this application.
[0044] Explanation of reference numerals in the attached figures:
[0045] 100 - Shell; 101 - Receiving cavity;
[0046] 200 - Rotating component;
[0047] 300-Strain Gauge;
[0048] 400 - Control components; 401 - Transmitter tube;
[0049] 500-receiving tube;
[0050] 600 - Power supply component; 601 - First coil; 602 - Second coil;
[0051] 700 - First base; 701 - Second base; 7011 - First sub-base; 7012 - Second sub-base;
[0052] 800 - Rotational speed measurement component; 801 - Encoder disk; 8011 - Measurement unit; 8012 - Shielding unit; 802 - Optical coupler sensor;
[0053] 900 - Support component. Detailed Implementation
[0054] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0055] In existing technologies, torque sensors measure torque primarily by attaching strain gauges to the rotor. When the rotor undergoes minute torsional deformation under torque, the resistance of the strain gauges changes accordingly. By connecting the strain gauges to a Wheatstone bridge circuit, the resistance change can be converted into a voltage signal. By processing this voltage signal, the rotor torque can be calculated.
[0056] When the rotor's rotational speed is 20,000 rpm or higher, the rotor's inertia increases, which slows down the response speed of the torque measurement module. As a result, the torque measurement module may have inaccurate measurement problems when the rotor's load changes.
[0057] To overcome the shortcomings of existing technologies, a rotating component and a housing are incorporated, allowing the rotating component to rotate relative to the housing under external force. By incorporating strain gauges, control components, and a transmitting tube, the mechanical deformation of the rotating component is converted into an electrical signal from the control component, which in turn is converted into an optical signal from the transmitting tube. In this configuration, by placing the strain gauges, control components, and transmitting tube within the rotating component, the rotating component can synchronously rotate these components. By placing a receiving tube within the housing, the transmitting tube can periodically emit optical signals to the receiving tube during rotation. A receiving plate can output the received optical signals as a preset output signal, thereby enabling the measurement of the torque of the rotating component. Increasing the number of transmitting tubes allows at least two tubes to simultaneously emit optical signals to the receiving tube during rotation, reducing signal loss. In some embodiments, increasing the number of transmitting tubes also ensures that even if some tubes fail, others connected in parallel can continue operating normally, thus improving the accuracy of torque measurement.
[0058] Therefore, the speed and torque sensor provided in the embodiments of this application can solve the problem of inaccurate torque measurement when the rotational speed of the rotating equipment is too high.
[0059] The contents of this application will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can have a clearer and more detailed understanding of the contents of this application.
[0060] like Figure 1 , Figure 2 and Figure 3 As shown in the figure, this application provides a speed and torque sensor, including: a housing 100, a rotating component 200, a strain gauge 300, a control component 400, a transmitting tube 401, a receiving tube 500, and a receiving plate. The housing 100 has a receiving cavity 101. The rotating member 200 is rotatably disposed in the receiving cavity 101. The strain gauge 300 is attached to the outer peripheral wall of the rotating member 200. The control member 400 is disposed on the rotating member 200 and is electrically connected to the strain gauge 300. The transmitting tube 401 is disposed on the rotating member 200 and is electrically connected to the control member 400. At least two transmitting tubes 401 are arranged in parallel. The at least two transmitting tubes 401 are spaced apart along the circumferential direction of the rotating member 200. The receiving tube 500 is disposed on the housing 100 along the radial direction of the rotating member 200. The first receiving end of the receiving tube 500 and the first transmitting end of the transmitting tube 401 are spaced apart and face each other. The receiving plate is disposed on the housing 100 and is electrically connected to the receiving tube 500. The receiving plate is used to output the optical signal received by the receiving tube 500 as a preset output signal.
[0061] The following sections provide a detailed description of the specific structure of the speed and torque sensor and the transmission device, as well as various possible implementation methods.
[0062] It should be noted that, along the axial direction of the rotating component 200, one end of the rotating component 200 is used to connect the output shaft of the external drive device, and the other end of the rotating component 200 is used to connect the rotating shaft of the external rotating equipment. The speed and torque sensor can detect the speed and torque of the rotating component 200.
[0063] It should be noted that the torque or torque of the rotating shaft or the output shaft of the drive device during rotation will be transmitted to the rotating component 200.
[0064] It should be noted that the control component 400 contains a Wheatstone bridge circuit. When the rotating component 200 undergoes slight torsional deformation under torque, the resistance value of the strain gauge 300 changes accordingly. The Wheatstone bridge circuit converts the resistance change into a voltage signal, which is proportional to the applied torque.
[0065] It should be noted that the strain gauge 300 is attached to the outer peripheral wall of the rotating component 200. The mechanical deformation generated by the rotating component 200 will be transmitted to the surface of the strain gauge 300. When the strain gauge 300 undergoes mechanical deformation, the resistance value of the strain gauge 300 will change, thereby causing the internal current or voltage of the control component 400 to change.
[0066] Understandably, the cooperation between strain gauge 300 and control component 400 can convert the mechanical deformation generated by rotating component 200 into an electrical signal.
[0067] It should be noted that the control unit 400 is electrically connected to the transmitting tube 401, enabling the control unit 400 to control the emission intensity or output power of the transmitting tube 401, and enabling the transmitting tube 401 to output corresponding optical signals. The transmitting tube 401 cooperates with the receiving tube 500, enabling the receiving tube 500 to receive optical signals from the transmitting tube 401.
[0068] It should be noted that the preset output signal can be either a wave signal or an electrical signal, and there are no restrictions. It can be selected according to the actual usage requirements.
[0069] The embodiments of this application provide multiple receiving tubes 500 arranged in parallel, with the multiple receiving tubes 500 spaced apart along the circumferential direction of the rotating member 200.
[0070] It is understandable that increasing the number of receiving tubes 500 can increase the distribution density of the receiving tubes 500 on the housing 100, thereby shortening the signal reception time difference between two adjacent receiving tubes 500, which can increase the signal output frequency of the receiving board, thus making the speed and torque sensor more sensitive.
[0071] It should be noted that the number of receiver tubes 500 can be 1, 2, 3, 4 or other values greater than or equal to 1. There is no restriction here, and it can be selected according to actual usage needs.
[0072] It should be noted that the number of transmitter tubes 401 can be 1, 2, 3, 4 or other values greater than or equal to 1, and there is no restriction here. It can be selected according to the actual use needs.
[0073] In one embodiment, four transmitting tubes 401 are provided, spaced apart along the circumferential direction of the rotating member 200, and 52 receiving tubes 500 are provided, spaced apart along the circumferential direction of the rotating member 200.
[0074] Understandably, increasing the number of transmitting tubes 401 allows all four to simultaneously emit light signals to the receiving tube 500 when the rotating component 200 rotates, reducing signal loss. It also ensures that even if some transmitting tubes 401 fail, others can continue operating normally, thus enabling torque measurement of the rotating component 200. Increasing the number of receiving tubes 500 also improves their density on the housing 100, shortening the signal reception time difference between adjacent tubes and increasing the signal output frequency of the receiving board. This, in turn, makes the speed and torque sensor more sensitive.
[0075] The speed and torque sensor provided in the embodiments of this application further includes: a power supply component 600, which is disposed on the rotating component 200. Along the axial direction of the rotating component 200, the power supply component 600 is located on the side of the strain gauge 300 away from the transmitting tube 401. The power supply component 600 is electrically connected to the control component 400 and is used to provide power to the control component 400.
[0076] Understandably, the Wheatstone bridge circuit within the control unit 400 requires a power supply to provide an excitation voltage in order to detect minute changes in the resistance of the strain gauge 300. The Wheatstone bridge circuit then converts these resistance changes into a voltage signal. Along the axial direction of the rotating component 200, the power supply unit 600 is located on the side of the strain gauge 300 away from the transmitting tube 401. This reduces interference between the power supply unit 600, the strain gauge 300, and the transmitting tube 401, thus providing safety protection for the speed and torque sensor.
[0077] It should be noted that the power supply unit 600 has several different configuration methods, which will be illustrated with examples below.
[0078] In one embodiment, the power supply component 600 includes: a first coil 601 and a second coil 602. The first coil 601 is arranged around the outer periphery of the rotating component 200 and is electrically connected to the control component 400. The second coil 602 is arranged around the outer periphery of the first coil 601 and is connected to the inner wall of the housing 100. The first coil 601 is electrically connected to the power supply. The first coil 601 and the second coil 602 are spaced apart along the radial direction of the rotating component 200.
[0079] Understandably, when the rotating component 200 rotates, it drives the first coil 601 to rotate synchronously. The alternating current from the power supply passes through the second coil 602, generating a high-frequency alternating magnetic field. This magnetic field passes through the gap between the first and second coils 601 and couples to the first coil 601 on the rotating component 200. According to Faraday's law of electromagnetic induction, the changing magnetic field induces an alternating voltage in the rotating first coil 601. This alternating voltage can be used as the excitation voltage for a Wheatstone bridge circuit.
[0080] In one embodiment, the power supply unit 600 is a battery, and the battery is conductively connected to the control unit 400.
[0081] Understandably, the battery voltage can be used as the excitation voltage for the Wheatstone bridge circuit.
[0082] Understandably, there are no restrictions on the configuration of the power supply unit 600; it can be selected according to actual usage requirements.
[0083] The speed and torque sensor provided in the embodiments of this application further includes: a first base 700 and a second base 701. The first base 700 is sleeved on the outer periphery of the rotating member 200. A first coil 601 is sleeved on the first base 700 and is located on the side of the first base 700 away from the rotating member 200. The second base 701 is sleeved on the outer periphery of the first base 700 and is connected to the housing 100 and the second coil 602 respectively. The second coil 602 is located on the side of the second base 701 away from the housing 100.
[0084] It is understandable that by setting the first base 700, the first coil 601 can be connected to the rotating part 200, and by setting the second base 701, the second coil 602 can be connected to the housing 100.
[0085] Furthermore, the second base 701 includes a first sub-base 7011 and a second sub-base 7012 connected together. Along the axial direction of the rotating member 200, the first base 700 is sandwiched between the first sub-base 7011 and the second sub-base 7012.
[0086] It is understandable that by setting the first sub-base 7011 and the second sub-base 7012, the second base 701 can be easily disassembled and installed. In addition, along the axial direction of the rotating member 200, the first base 700 is clamped between the first sub-base 7011 and the second sub-base 7012, so that the first sub-base 7011 and the second sub-base 7012 can clamp the first base 700 to protect the first coil 601 and the second coil 602.
[0087] The speed and torque sensor provided in the embodiments of this application further includes: a speed measuring component 800, which is disposed on the rotating member 200 and is used to measure the rotation speed of the rotating member 200.
[0088] Understandably, by setting the rotation speed measuring component 800, the rotation speed of the rotating component 200 can be measured.
[0089] The speed and torque sensor provided in the embodiments of this application further includes: an encoder disk 801 and an optocoupler sensor 802. The encoder disk 801 is fixedly connected to the rotating member 200. Along the axial direction of the rotating member 200, the encoder disk 801 is located at the end of the strain gauge 300 away from the transmitting tube 401. A plurality of measuring parts 8011 and a plurality of blocking parts 8012 are alternately arranged on the encoder disk 801. Along the circumferential direction of the rotating member 200, the plurality of measuring parts 8011 are spaced apart, and along the circumferential direction of the rotating member 200, the plurality of blocking parts 8012 are spaced apart. The optocoupler sensor 802 is disposed in the receiving cavity 101. Along the radial direction of the rotating member 200, the optocoupler sensor 802 and the encoder disk 801 are spaced apart, or along the axial direction of the rotating member 200, the optocoupler sensor 802 and the encoder disk 801 are spaced apart.
[0090] It is understandable that when the rotating component 200 rotates, it drives the encoder disk 801 to rotate synchronously. This allows the measuring part 8011 and the blocking part 8012 on the encoder disk 801 to alternately appear within the measurement range of the optocoupler sensor 802. The second transmitting end and the second receiving end of the optocoupler sensor 802 can cooperate with the measuring part 8011 and the blocking part 8012, so that the second receiving end of the optocoupler sensor 802 can periodically receive the light signal emitted by the second transmitting end and output a pulse signal. The rotational speed is then obtained by calculating the pulse frequency. This is used to obtain the rotational speed of the rotating component 200.
[0091] It should be noted that the measuring unit 8011 and the blocking unit 8012 have a variety of different configurations. The configurations of the measuring unit 8011 and the blocking unit 8012 will be illustrated with examples below.
[0092] In one embodiment, the measuring part 8011 is a reflective strip, which is attached to the teeth of the encoder disk 801. The blocking part 8012 is a light-absorbing strip, which is attached to the groove of the encoder disk 801. The optical coupler sensor 802 has a second transmitting end and a second receiving end. The second transmitting end is used to emit light signals toward the reflective strip and / or the light-absorbing strip, and the second receiving end is used to receive the light signals reflected by the reflective strip.
[0093] In this case, the optocoupler sensor 802 and the encoder disk 801 are spaced apart along the radial direction of the rotating member 200.
[0094] It is understood that, through the above implementation method, the reflective strip, the light-absorbing strip, the second transmitting end and the second receiving end can cooperate to periodically block or reflect light signals, so that the optocoupler sensor 802 can output pulse signals, and the rotation speed can be obtained by calculating the pulse frequency.
[0095] In one embodiment, the measuring part 8011 is a through hole, and the encoder disk 801 is inserted through the through hole along the axial direction of the rotating member 200. The shielding part 8012 is provided on the outer wall of the encoder disk 801, and one shielding part 8012 connects the outer walls of two adjacent through holes. The optical coupler sensor 802 has a second transmitting end and a second receiving end, and the second transmitting end and the second receiving end are respectively provided on both sides of the encoder disk 801 along the axial direction of the rotating member 200.
[0096] In this case, the optocoupler sensor 802 and the encoder disk 801 are spaced apart along the axial direction of the rotating member 200.
[0097] It is understandable that when the rotating component 200 rotates, it drives the encoder disk 801 to rotate synchronously. This allows the measuring part 8011 and the blocking part 8012 on the encoder disk 801 to alternately appear within the measurement range of the optocoupler sensor 802. When the measuring part 8011 on the encoder disk 801 is within the measurement range of the optocoupler sensor 802, the light signal emitted by the second transmitter can reach the second receiver after passing through the through hole. When the blocking part 8012 on the encoder disk 801 is within the measurement range of the optocoupler sensor 802, the light signal emitted by the second transmitter is blocked by the blocking part 8012 and cannot be transmitted to the second receiver. This allows the second receiver of the optocoupler sensor 802 to periodically receive the light signal emitted by the second transmitter and output a pulse signal, thereby calculating the rotational speed by calculating the pulse frequency. This allows the rotational speed of the rotating component 200 to be obtained.
[0098] It is understood that the specific implementation of the measuring unit 8011 and the shielding unit 8012 is not limited and can be selected according to actual usage requirements.
[0099] The speed and torque sensor provided in the embodiments of this application further includes: a support member 900, which is fixedly connected to the housing 100 and is arranged at intervals along the radial direction of the rotating member 200. The receiving tube 500 is disposed in the housing 100 through the support member 900.
[0100] It is understandable that by setting the support member 900, the receiving tube 500 can be supported, and the receiving tube 500 can be conveniently placed in the housing 100.
[0101] Embodiments of this application provide a transmission device, including the speed and torque sensor provided in any of the above embodiments.
[0102] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.
[0103] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.
[0104] It should be readily understood that the terms “on,” “above,” and “on top of” in this application should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).
[0105] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90° or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.
[0106] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A speed and torque sensor, characterized in that, include: The housing (100) has a receiving cavity (101). A rotating component (200) is rotatably disposed within the receiving cavity (101); Strain gauges (300) are attached to the outer peripheral wall of the rotating component (200); A control element (400) is disposed on the rotating element (200), and the control element (400) is electrically connected to the strain gauge (300). A transmitting tube (401) is disposed on the rotating member (200) and electrically connected to the control member (400). At least two transmitting tubes (401) are arranged in parallel, and at least two transmitting tubes (401) are spaced apart along the circumferential direction of the rotating member (200). A receiving tube (500) is disposed in the housing (100) along the radial direction of the rotating member (200). The first receiving end of the receiving tube (500) is spaced apart from the first transmitting end of the transmitting tube (401) and they face each other. A receiving board is disposed in the housing (100) and electrically connected to the receiving tube (500). The receiving board is used to output the optical signal received by the receiving tube (500) as a preset output signal.
2. The speed and torque sensor according to claim 1, characterized in that, Multiple receiving tubes (500) are arranged in parallel, and the multiple receiving tubes (500) are spaced apart along the circumferential direction of the rotating member (200).
3. The speed and torque sensor according to claim 1, characterized in that, Also includes: A power supply component (600) is disposed on the rotating component (200) along the axial direction of the rotating component (200), and the power supply component (600) is located on the side of the strain gauge (300) away from the transmitting tube (401); The power supply unit (600) is electrically connected to the control unit (400), and the power supply unit (600) is used to provide power to the control unit (400).
4. The speed and torque sensor according to claim 3, characterized in that, The power supply component (600) includes: The first coil (601) is arranged around the outer periphery of the rotating member (200) and is electrically connected to the control member (400); The second coil (602) is arranged around the outer periphery of the first coil (601) and connected to the inner wall of the housing (100). The first coil (601) is electrically connected to the power source. Along the radial direction of the rotating member (200), the first coil (601) and the second coil (602) are spaced apart.
5. The speed and torque sensor according to claim 4, characterized in that, Also includes: A first base (700) is sleeved on the outer periphery of the rotating member (200), and a first coil (601) is sleeved on the first base (700), with the first coil (601) located on the side of the first base (700) away from the rotating member (200). The second base (701) is sleeved on the outer periphery of the first base (700) and is connected to the housing (100) and the second coil (602) respectively. The second coil (602) is located on the side of the second base (701) away from the housing (100).
6. The speed and torque sensor according to claim 5, characterized in that, The second base (701) includes a first sub-base (7011) and a second sub-base (7012) connected together. Along the axial direction of the rotating member (200), the first base (700) is sandwiched between the first sub-base (7011) and the second sub-base (7012).
7. The speed and torque sensor according to any one of claims 1-6, characterized in that, Also includes: A rotational speed measuring component (800) is disposed on the rotating component (200), and the rotational speed measuring component (800) is used to measure the rotational speed of the rotating component (200).
8. The speed and torque sensor according to claim 7, characterized in that, The rotational speed measuring component (800) includes: An encoder disk (801) is fixedly connected to the rotating member (200). Along the axial direction of the rotating member (200), the encoder disk (801) is located at the end of the strain gauge (300) away from the transmitting tube (401). The encoder disk (801) has a plurality of measuring parts (8011) and a plurality of blocking parts (8012) arranged alternately. Along the circumferential direction of the rotating member (200), the plurality of measuring parts (8011) are arranged at intervals, and along the circumferential direction of the rotating member (200), the plurality of blocking parts (8012) are arranged at intervals. An optical coupler sensor (802) is disposed in the receiving cavity (101); Along the radial direction of the rotating member (200), the optocoupler sensor (802) and the encoder disk (801) are spaced apart; Alternatively, along the axial direction of the rotating member (200), the optocoupler sensor (802) and the encoder disk (801) are spaced apart.
9. The speed and torque sensor according to any one of claims 1-6, characterized in that, include: A support member (900) is fixedly connected to the housing (100) and is arranged at intervals along the radial direction of the rotating member (200); The receiving tube (500) is disposed on the housing (100) via the support member (900).
10. A transmission device, characterized in that, The present invention includes a speed and torque sensor according to any one of claims 1-9.