CN209820659U - Composite torque sensor of electric booster vehicle - Google Patents
Composite torque sensor of electric booster vehicle Download PDFInfo
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- CN209820659U CN209820659U CN201920981034.1U CN201920981034U CN209820659U CN 209820659 U CN209820659 U CN 209820659U CN 201920981034 U CN201920981034 U CN 201920981034U CN 209820659 U CN209820659 U CN 209820659U
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Abstract
The utility model relates to a composite torque sensor of an electric bicycle, which comprises a rotating torque acquisition component and a fixed control component; the fixed control component is provided with a fixed control circuit, a voltage input switching power supply and a first transmission line ring; the fixed control circuit is provided with a first power supply input end and a frequency data input end; the input end of the first power supply is connected with the voltage input switching power supply, and the input end of the frequency data and the output end of the voltage input switching power supply are respectively connected with the first transmission coil; the rotating torque acquisition component is provided with a torque acquisition circuit, a power management IC and a second transmission coil; the torque acquisition circuit is provided with a second power supply input end and a frequency data output end; the input end of the power management IC is connected with the second transmission coil, the output end of the power management IC is connected with the second power input end, and the frequency data output end is connected with the second transmission coil. The torque acquisition device can solve the problem that circuit power supply and data transmission cannot be realized when torque acquisition is directly carried out on a rotating chain disc.
Description
Technical Field
The utility model relates to electric bicycle sensor technology especially involves a compound torque sensor of electric bicycle.
Background
The torque sensor of the electric moped has the following functions: the method comprises the steps of collecting a signal of a chain plate of the manpower-rotation electric moped, outputting the signal to a motor of the electric moped, and finally changing output power of the motor according to the signal.
However, because the chain plate needs to rotate continuously, the conventional torque sensor of the electric bicycle is generally arranged beside the chain plate, so that the problems of low response speed and inaccurate acquired torque data exist when the torque sensor of the conventional electric bicycle measures torque.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a compound torque sensor of electric bicycle can solve and directly carry out moment when gathering on the pivoted chain dish, can't realize circuit power supply and data transmission's problem.
The utility model provides a compound torque sensor of electric bicycle, include: a rotation torque acquisition component and a fixed control component;
the fixed control component is provided with a fixed control circuit, a voltage input switching power supply and a first transmission line ring; the fixed control circuit is provided with a first power supply input end and a frequency data input end; the first power supply input end is connected with the output end of the voltage input switching power supply, and the frequency data input end and the voltage input switching power supply are respectively connected with the first transmission coil; the first transmission line coil is located on one side of the stationary control member;
the rotating torque acquisition component is provided with a torque acquisition circuit, a power management IC and a second transmission coil; the torque acquisition circuit is provided with a second power supply input end and a frequency data output end; the input end of the power management IC is connected with the second transmission coil, the output end of the power management IC is connected with the second power input end, and the frequency data output end is connected with the second transmission coil; the second transmission coil is located on one side surface of the rotational torque acquisition member;
the first transmission coil and the second transmission coil are inductively connected with each other.
Furthermore, a speed acquisition circuit is also arranged on the fixed control component; the fixed control circuit is also provided with a speed data input end; and the output end of the speed acquisition circuit is connected with the speed data input end.
Furthermore, the speed acquisition circuit is a Hall element speed acquisition circuit.
Furthermore, the fixed control component is also provided with a communication output circuit; the fixed control circuit is also provided with a communication output end; the communication output circuit is connected with the communication output end.
Furthermore, the communication output circuit is an analog/digital dual-output circuit.
Furthermore, the fixed control component is also provided with a carrier oscillation circuit; the input end of the carrier oscillation circuit is connected with the voltage input switch power supply, and the output end of the carrier oscillation circuit is connected with the first transmission line coil.
Further, the moment acquisition circuit includes: the device comprises a strain bridge circuit, a preposed signal amplifier, a rotating moment V/F conversion controller and a wireless modulation circuit; the rotating moment V/F conversion controller is provided with a collecting voltage input end, a collecting frequency output end and a V/F conversion voltage input end;
the second power input end is respectively connected with the V/F conversion voltage input end and the input end of the strain bridge circuit, the output end of the strain bridge circuit is connected with the input end of the preposed signal amplifier, the output end of the preposed signal amplifier is connected with the acquisition voltage input end, the acquisition frequency output end is connected with the input end of the wireless modulation circuit, and the output end of the wireless modulation circuit is connected with the frequency data output end.
Furthermore, the strain bridge circuit is a full bridge circuit, and the preposed signal amplifier is a differential amplifier;
the full-bridge circuit is provided with an input end, a grounding end and two output ends;
the differential amplifier is provided with an output end and two input ends;
the input end of the full-bridge circuit is connected with the second power input end, the grounding end of the full-bridge circuit is grounded, the two output ends of the full-bridge circuit are respectively connected with the two input ends of the differential amplifier, and the output end of the differential amplifier is connected with the acquisition voltage input end.
Further, the fixed control circuit includes: the detection amplification shaping circuit and the F/V conversion controller; the F/V conversion controller is provided with an F/V conversion voltage input end, a control frequency input end and a control voltage output end;
the input end of the F/V conversion voltage is connected with the input end of the first power supply, and the output end of the detection amplification shaping circuit is connected with the input end of the frequency data; the fixed control circuit is also provided with a communication output end, and the control voltage output end is connected with the communication output end.
Further, the carrier oscillation circuit is a carrier chip.
The utility model discloses a compound torque sensor of electric bicycle's beneficial effect does: through first transmission coil and second transmission coil mutual induction type connection, can realize the power supply of fixed control component to the rotating torque acquisition component to and the data transmission of rotating torque acquisition component to fixed control component, thereby can solve when directly carrying out the moment acquisition on the pivoted chain dish, unable realization circuit power supply and data transmission's problem, have response speed fast, the accurate characteristics of the moment data of collection.
Drawings
Fig. 1 is a schematic structural view of a fixed control member in an embodiment of the present invention;
fig. 2 is a schematic structural view of a rotational torque acquisition member in an embodiment of the present invention;
fig. 3 is a schematic structural view of a composite torque sensor of an electric bicycle according to an embodiment of the present invention;
fig. 4 is a circuit frame diagram of a composite torque sensor of an electric bicycle according to an embodiment of the present invention.
Fig. 5 is a circuit diagram of a detection amplification shaping circuit according to an embodiment of the present invention.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As used herein, the singular forms "a", "an", "the" and "the" include plural referents unless the content clearly dictates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, units, modules, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Referring to fig. 1 to 4, the utility model discloses a compound torque sensor of electric bicycle, include: a rotation torque acquisition component 2 and a fixed control component 1;
the fixed control component 1 is provided with a fixed control circuit 11, a voltage input switch power supply 12 and a first transmission line ring 10; the fixed control circuit 11 is provided with a first power input end and a frequency data input end; the first power input end is connected with the voltage input switching power supply 12, and the frequency data input end and the output end of the voltage input switching power supply 12 are respectively connected with the first transmission coil 10;
the rotating torque acquisition component 2 is provided with a torque acquisition circuit 21, a power management IC22 and a second transmission coil 20; the torque acquisition circuit 21 is provided with a second power input end and a frequency data output end; an input terminal of the power management IC22 is connected to the second transmission coil 20, an output terminal of the power management IC22 is connected to the second power input terminal, and the frequency data output terminal is connected to the second transmission coil 20;
the first transmission coil 10 and the second transmission coil 20 are inductively connected to each other.
In this embodiment, the fixing control member 1 is plate-shaped, the first transmission coil 10 is disposed on one side surface of the fixing control member 1, and the mounting part 3 is disposed on the other side surface of the fixing control member 1, and the mounting part 3 is used for fixedly mounting the fixing control member 1. The rotational torque collection member 2 has a plate shape, and the second transmission coil 20 is provided on one of the side surfaces of the rotational torque collection member 2.
The utility model discloses a compound torque sensor of electric bicycle can gather component 2 with rotatory moment and set up on electric bicycle's carousel when specifically using, and fixed control component 1 sets up one side of carousel makes first transmission line circle 10 and second transmission line circle 20's position be close to. In the process that the rotating torque acquisition component 2 rotates along with the turntable, the first transmission coil 10 and the second transmission coil 20 are mutually connected in an induction mode, so that power supply of the fixed control component 1 to the rotating torque acquisition component 2 can be realized, data transmission of the rotating torque acquisition component 2 to the fixed control component 1 can be realized, the problem that circuit power supply and data transmission cannot be realized when torque acquisition is directly carried out on a rotating chain disc can be solved, and the rotating torque acquisition component has the characteristics of high response speed and accurate acquired torque data.
The fixed control component 1 is also provided with a speed acquisition circuit 13; the fixed control circuit 11 is also provided with a speed data input end; the output end of the speed acquisition circuit 13 is connected with the speed data input end. Can gather the rotational speed of electric bicycle's carousel or running-board through speed acquisition circuit 13, make the utility model discloses a compound torque sensor of electric bicycle has the function of testing the speed.
Preferably, the speed acquisition circuit 13 is a hall element speed acquisition circuit, and at this time, a magnetic member needs to be arranged on a turntable or a pedal of the electric bicycle so that the hall element speed acquisition circuit generates a pulse signal as acquired speed data. In this embodiment, the Hall element is a Hall sensor of type MH188KSO SOT-23.
The fixed control component 1 is also provided with a communication output circuit 14; the fixed control circuit 11 is also provided with a communication output end; the communication output circuit 14 is connected to the communication output terminal. The fixed control circuit 11 outputs the collected torque data or the collected rotating speed data through the communication output circuit 14.
Preferably, the communication output circuit 14 is an analog/digital dual output circuit. Therefore, the utility model discloses a compound torque sensor of electric bicycle exports the analog quantity and the digital quantity of moment data or rotational speed data.
The fixed control component 1 is also provided with a carrier oscillation circuit 15; the input end of the carrier oscillation circuit 15 is connected with the voltage input switching power supply 12, and the output end of the carrier oscillation circuit 15 is connected with the first transmission coil 10. The current output by the voltage input switching power supply 12 can be converted into a high-frequency alternating current by the carrier oscillation circuit 15, thereby improving the efficiency of the energy transmission of the first transmission coil 10 to the second transmission coil 20.
Preferably, the carrier oscillation circuit 15 is a carrier chip with a model number XKT-510.
The torque acquisition circuit 21 includes: a strain bridge circuit 210, a preposed signal amplifier 211, a rotating moment V/F conversion controller 212 and a wireless modulation circuit 213; the rotating torque V/F conversion controller 212 is provided with a collection voltage input end, a collection frequency output end and a V/F conversion voltage input end;
the second power input end is respectively connected with the V/F conversion voltage input end and the input end of the strain bridge circuit 210, the output end of the strain bridge circuit 210 is connected with the input end of the preposed signal amplifier 211, the output end of the preposed signal amplifier 211 is connected with the acquisition voltage input end, the acquisition frequency output end is connected with the input end of the wireless modulation circuit 213, and the output end of the wireless modulation circuit 213 is connected with the frequency data output end.
The strain bridge circuit 210 is used for generating an initial acquisition voltage signal according to the moment of the turntable; the preposed signal amplifier 211 is used for amplifying the initial collected voltage signal into a collected voltage signal which can be identified by the rotating torque V/F conversion controller 212; the rotation torque V/F conversion controller 212 is configured to convert the collected voltage signal into a collected frequency signal; the wireless modulation circuit 213 is configured to receive the collected frequency signal, perform amplitude modulation processing on the collected frequency signal, and output the amplitude-modulated signal to the second transmission coil 20, so as to improve the accuracy of data transmission of the first transmission coil 10 by the second transmission coil 20.
Preferably, the wireless modulation circuit 213 is an enhancement type MOS transistor, a source of the enhancement type MOS transistor is grounded, a gate of the enhancement type MOS transistor receives the acquisition frequency signal, and a drain of the enhancement type MOS transistor outputs the acquisition frequency signal after amplitude modulation processing.
Preferably, the strain bridge circuit 210 is a full bridge circuit, and the front signal amplifier 211 is a differential amplifier;
the full-bridge circuit is provided with an input end, a grounding end and two output ends;
the differential amplifier is provided with an output end and two input ends;
the input end of the full-bridge circuit is connected with the second power input end, the grounding end of the full-bridge circuit is grounded, the two output ends of the full-bridge circuit are respectively connected with the two input ends of the differential amplifier, and the output end of the differential amplifier is connected with the acquisition voltage input end.
The preamplifier 211 uses a differential amplifier, which has the characteristics of small offset voltage and strong anti-interference capability.
Preferably, the pre-signal amplifier 211 is a high precision differential amplifier having the model number INA128UA SOIC-8.
The stationary control circuit 11 includes: a detection amplification shaping circuit 110 and an F/V conversion controller 111; the F/V conversion controller 111 is provided with an F/V conversion voltage input terminal, a control frequency input terminal, and a control voltage output terminal;
the F/V conversion voltage input end is connected to the first power input end, and the output end of the detection amplification shaping circuit 110 is connected to the frequency data input end; the fixed control circuit 111 is further provided with a communication output end, and the control voltage output end is connected with the communication output end.
In this embodiment, the F/V conversion controller 111 is further provided with a speed frequency input end, and the speed frequency input end is connected to the speed data input end.
In this embodiment, the differential amplifier is further provided with a positive terminal and a negative terminal, the positive terminal is connected to the second power input terminal, and the negative terminal is connected to the negative power supply, so that the differential amplifier is powered by the positive and negative power supplies. The voltage of the negative power supply may be a negative voltage controlled by the F/V conversion controller 111.
The detection amplification shaping circuit 110 is configured to receive the amplitude-modulated acquisition frequency signal obtained by the first transmission coil 10, and perform high-frequency-removal detection processing, amplification processing, and modulation frequency processing on the acquisition frequency signal to obtain a control frequency signal having the same frequency as the acquisition frequency signal; the F/V conversion controller 111 is configured to receive the control frequency signal and convert the control frequency signal into a control voltage signal, in this embodiment, the control voltage signal is output to an input terminal of the communication output circuit 14.
Referring to fig. 5, in the present embodiment, detection amplification shaping circuit 110 includes a detection circuit 1101, an amplification circuit 1102, and a shaping circuit 1103, an input of detection circuit 1101 is an input of detection amplification shaping circuit 110, an output of detection circuit 1101 is connected to an input of amplification circuit 1102, an output of amplification circuit 1102 is connected to an input of shaping circuit 1103, and an output of shaping circuit 1103 is an output of detection amplification shaping circuit 110.
The detection circuit 1101 is configured to receive an amplitude-modulated acquisition frequency signal obtained by the first transmission coil 10 and perform high frequency removal on the amplitude-modulated acquisition frequency signal; the amplifying circuit 1102 amplifies the detected acquisition frequency signal; the shaping circuit 1103 is configured to perform frequency modulation on the amplified acquisition frequency signal, and output a control frequency signal having the same frequency as the acquisition frequency signal output by the rotation torque V/F conversion controller 212.
The detector circuit 1101 comprises a first resistor R1, a first diode D1, a tenth capacitor C10, an eleventh resistor R11 and a ninth capacitor C9; one end of the first resistor R1 is an input end of the detector circuit 1101, the other end of the first resistor R1 is connected to an input end of the first diode D1, an output end of the first diode D1, one end of the tenth capacitor C10, one end of the eleventh resistor R11 and one end of the ninth capacitor C9 are connected to each other, the other end of the tenth capacitor C10 and the other end of the eleventh resistor R11 are grounded, and the other end of the ninth capacitor C9 is an output end of the detector circuit 1101. The amplifying circuit 1102 comprises a first voltage comparator U3A, a twelfth resistor R12, a thirteenth resistor R13, a fifth resistor R5 and a thirteenth capacitor C13; the positive electrode amplification input end of the first voltage comparator U3A is connected with one end of a twelfth resistor R12 to serve as the input end of the amplification circuit 1102, the other end of the twelfth resistor R12 is grounded, the negative electrode amplification input end of the first voltage comparator U3A, one end of a thirteenth capacitor C13 and one end of a fifth resistor R5 are connected with each other, the other end of the thirteenth capacitor C13 and the other end of the fifth resistor R5 are connected with the output end of the first voltage comparator U3A to serve as the output end of the amplification circuit 1102, the positive electrode power supply input end of the first voltage comparator U3A is connected with an input power supply, and the negative electrode power supply input end of the first voltage comparator U3A is grounded. The shaping circuit 1103 includes a second voltage comparator U3B, a ninth resistor R9, a fourteenth resistor R14, and a fourteenth capacitor C14; an anode amplification input end of the second voltage comparator U3B is an input end of the shaping circuit 1103, a cathode amplification input end of the second voltage comparator U3B, one end of a ninth resistor R9, one end of a fourteenth resistor R14 and one end of a fourteenth capacitor C14 are connected, the other end of the fourteenth resistor R14 and the other end of the fourteenth capacitor C14 are grounded, the other end of the ninth resistor R9 is connected with an input power supply, and an output end of the second voltage comparator U3B is an output end of the shaping circuit 1103. In addition, one current limiting resistor is connected to each of the output terminals of the detector circuit 1101, the amplifier circuit 1102, and the shaping circuit 1103.
Preferably, the rotating torque V/F conversion controller 212 and the F/V conversion controller 111 are both single-chip microcomputers, and the model thereof is PIC16L 1768. The PIC16L1768 singlechip can realize the interconversion between frequency signal and voltage signal.
Preferably, the power management IC22 is a MIC5253-3.3BC5 low-consumption power management IC. The power management IC22 may provide a variety of different magnitudes of regulated voltage for the torque acquisition circuit.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the same way in the protection scope of the present invention.
Claims (10)
1. The utility model provides a compound torque sensor of electric bicycle which characterized in that includes: a rotation torque acquisition component and a fixed control component;
the fixed control component is provided with a fixed control circuit, a voltage input switching power supply and a first transmission line ring; the fixed control circuit is provided with a first power supply input end and a frequency data input end; the first power supply input end is connected with the voltage input switching power supply, and the frequency data input end and the output end of the voltage input switching power supply are respectively connected with the first transmission coil; the first transmission line coil is located on one side of the stationary control member;
the rotating torque acquisition component is provided with a torque acquisition circuit, a power management IC and a second transmission coil; the torque acquisition circuit is provided with a second power supply input end and a frequency data output end; the input end of the power management IC is connected with the second transmission coil, the output end of the power management IC is connected with the second power input end, and the frequency data output end is connected with the second transmission coil; the second transmission coil is located on one side surface of the rotational torque acquisition member;
the first transmission coil and the second transmission coil are inductively connected with each other.
2. The compound torque sensor of claim 1, wherein the fixed control member is further provided with a speed acquisition circuit; the fixed control circuit is also provided with a speed data input end; and the output end of the speed acquisition circuit is connected with the speed data input end.
3. The compound torque sensor of claim 2, wherein the speed acquisition circuit is a hall element speed acquisition circuit.
4. A composite torque sensor for an electric bicycle according to any one of claims 1-3, wherein the fixed control member is further provided with a communication output circuit; the fixed control circuit is also provided with a communication output end; the communication output circuit is connected with the communication output end.
5. The hybrid torque sensor of claim 4, wherein the communication output circuit is an analog/digital dual output circuit.
6. A composite torque sensor for an electric bicycle according to any one of claims 1-3, wherein the stationary control member is further provided with a carrier oscillation circuit; the input end of the carrier oscillation circuit is connected with the voltage input switch power supply, and the output end of the carrier oscillation circuit is connected with the first transmission line coil.
7. A compound torque sensor for an electric bicycle according to any one of claims 1-3, wherein the torque acquisition circuit comprises: the device comprises a strain bridge circuit, a preposed signal amplifier, a rotating moment V/F conversion controller and a wireless modulation circuit; the rotating moment V/F conversion controller is provided with a collecting voltage input end, a collecting frequency output end and a V/F conversion voltage input end;
the second power input end is respectively connected with the V/F conversion voltage input end and the input end of the strain bridge circuit, the output end of the strain bridge circuit is connected with the input end of the preposed signal amplifier, the output end of the preposed signal amplifier is connected with the acquisition voltage input end, the acquisition frequency output end is connected with the input end of the wireless modulation circuit, and the output end of the wireless modulation circuit is connected with the frequency data output end.
8. The compound torque sensor of claim 7, wherein the strain bridge circuit is a full bridge circuit, and the preamplifier is a differential amplifier;
the full-bridge circuit is provided with an input end, a grounding end and two output ends;
the differential amplifier is provided with an output end and two input ends;
the input end of the full-bridge circuit is connected with the second power input end, the grounding end of the full-bridge circuit is grounded, the two output ends of the full-bridge circuit are respectively connected with the two input ends of the differential amplifier, and the output end of the differential amplifier is connected with the acquisition voltage input end.
9. A composite torque sensor for an electric power assisted vehicle according to any one of claims 1 to 3, wherein the stationary control circuit comprises: the detection amplification shaping circuit and the F/V conversion controller; the F/V conversion controller is provided with an F/V conversion voltage input end, a control frequency input end and a control voltage output end;
the input end of the F/V conversion voltage is connected with the input end of the first power supply, and the output end of the detection amplification shaping circuit is connected with the input end of the frequency data; the fixed control circuit is also provided with a communication output end, and the control voltage output end is connected with the communication output end.
10. The compound torque sensor of claim 6, wherein the carrier oscillation circuit is a carrier chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920981034.1U CN209820659U (en) | 2019-06-27 | 2019-06-27 | Composite torque sensor of electric booster vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920981034.1U CN209820659U (en) | 2019-06-27 | 2019-06-27 | Composite torque sensor of electric booster vehicle |
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| CN209820659U true CN209820659U (en) | 2019-12-20 |
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| CN201920981034.1U Active CN209820659U (en) | 2019-06-27 | 2019-06-27 | Composite torque sensor of electric booster vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114636491A (en) * | 2022-02-28 | 2022-06-17 | 中航电测仪器股份有限公司 | Moment measuring sensor circuit for airplane |
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2019
- 2019-06-27 CN CN201920981034.1U patent/CN209820659U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114636491A (en) * | 2022-02-28 | 2022-06-17 | 中航电测仪器股份有限公司 | Moment measuring sensor circuit for airplane |
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