CN110855019A - Wireless power supply device for torque measurement equipment - Google Patents

Wireless power supply device for torque measurement equipment Download PDF

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Publication number
CN110855019A
CN110855019A CN201911338148.5A CN201911338148A CN110855019A CN 110855019 A CN110855019 A CN 110855019A CN 201911338148 A CN201911338148 A CN 201911338148A CN 110855019 A CN110855019 A CN 110855019A
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CN
China
Prior art keywords
capacitor
voltage
pin
resistor
grounded
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CN201911338148.5A
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Chinese (zh)
Inventor
龙小波
桂凌云
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Beijing Bailian Changtong Technology Co Ltd
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Beijing Bailian Changtong Technology Co Ltd
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Priority to CN201911338148.5A priority Critical patent/CN110855019A/en
Publication of CN110855019A publication Critical patent/CN110855019A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • 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
    • 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
    • G01L3/108—Rotary-transmission dynamometers wherein the torque-transmitting element comprises a torsionally-flexible shaft involving electric or magnetic means for indicating involving resistance strain gauges

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

The embodiment of the invention discloses a wireless power supply device for torque measurement equipment. The device includes: the power transmission module is used for generating a first alternating voltage; a transmitting coil for receiving a first alternating voltage; a receiving coil arranged in parallel with the transmitting coil for generating a second alternating voltage; the input interface is connected with the receiving coil, is connected with a first pin of the rectifier bridge through a first voltage input pin, and is connected with a second pin of the rectifier bridge through a second voltage input pin; for sending the second alternating voltage to the rectifier bridge; the third pin of the rectifier bridge is connected with the anode of the first diode; the fourth pin of the rectifier bridge is connected with the negative electrode of the first diode; and the cathode of the first diode is also connected with one end of the first capacitor, one end of the second capacitor, one end of the third capacitor, one end of the fourth capacitor, one end of the fifth capacitor, one end of the sixth capacitor, one end of the seventh capacitor and one end of the eighth capacitor. By applying the scheme provided by the embodiment of the invention, the accuracy of torque measurement can be improved.

Description

Wireless power supply device for torque measurement equipment
Technical Field
The invention relates to the technical field of torque measurement, in particular to a wireless power supply device for torque measurement equipment.
Background
With the development of the domestic automobile industry, new models come to the fore, and automobile bench and road tests become more and more important. Modern engines need to increase the rotating speed to improve the mechanical performance and efficiency, and the torque is an important index of the performance of the motor and the engine, so that high-precision and high-reliability torque measurement is needed.
The existing torque measuring method mainly comprises a resistance strain gauge type transmission measuring method. The torque can cause a product to be detected to generate certain strain, and the strain and the torque have a proportional relation, so that the corresponding torque can be detected through the resistance strain gauge which can be subjected to torsional deformation. When a product to be tested is subjected to torque action, the maximum strain is generated in the direction forming an angle of 45 degrees with the axis, and therefore the resistance strain gauge is pasted in the direction, so that the torque applied to the transmission shaft can be detected.
In the known method, the torque measuring device is supplied with power primarily via an electrically conductive slip ring. However, since the conductive slip ring is in frictional contact, the unreliable contact may cause signal fluctuation, thereby causing inaccurate torque measurement results.
Disclosure of Invention
The invention provides a wireless power supply device for torque measurement equipment, which is used for improving the accuracy of torque measurement. The specific technical scheme is as follows.
A wirelessly powered device for a torque measuring apparatus, comprising:
the power transmission module is used for generating a first alternating voltage;
the transmitting coil is connected with the power transmission transmitting module and used for receiving the first alternating voltage;
a receiving coil arranged in parallel with the transmitting coil for generating a second alternating voltage;
the input interface is connected with the receiving coil, is connected with a first pin of the rectifier bridge through a first voltage input pin, and is connected with a second pin of the rectifier bridge through a second voltage input pin; for sending the second alternating voltage to the rectifier bridge;
the third pin of the rectifier bridge is connected with the anode of the first diode; the fourth pin of the rectifier bridge is connected with the negative electrode of the first diode;
the cathode of the first diode is also connected with one end of a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor and an eighth capacitor;
the anode of the first diode is grounded and is connected with the other ends of the first capacitor, the second capacitor, the third capacitor, the fourth capacitor, the fifth capacitor, the sixth capacitor, the seventh capacitor and the eighth capacitor.
Optionally, the first capacitor, the second capacitor, the third capacitor, the fourth capacitor, the fifth capacitor, the sixth capacitor, the seventh capacitor, and the eighth capacitor are all 10 microfarads.
Optionally, the voltage of the cathode of the first diode is 35V.
Optionally, the method further includes: a first voltage conversion device;
a first voltage input end of the first voltage conversion device is connected with a negative electrode of the first diode;
the voltage of the first voltage output end of the first voltage conversion device is 5.1V.
Optionally, the first voltage conversion device includes:
the first voltage input end is connected with the ninth capacitor, the tenth capacitor, one end of the first resistor and a voltage input pin of the converter;
the other ends of the ninth capacitor and the tenth capacitor are grounded;
the other end of the first resistor is connected with one end of a second resistor and an enabling pin of the converter; the other end of the second resistor is grounded; the mode/sync pin of the converter is grounded;
the first voltage output end is connected with one end of a voltage output pin, a third resistor, an eleventh capacitor and a twelfth capacitor of the converter;
the other ends of the eleventh capacitor and the twelfth capacitor are grounded;
the other end of the third resistor is connected with a feedback pin of the converter and one end of a fourth resistor; the other end of the fourth resistor is grounded;
the ground pins and the heat conducting pad pins of the converter are grounded.
Optionally, the ninth capacitor is 10 microfarads; the tenth capacitance is 100 nanofarads; the eleventh capacitance is 22 microfarads; the twelfth capacitor is 100 nanofarads.
Optionally, the first resistance is 220 kilo-ohms; the second resistance is 143 kilo-ohms; the third resistance is 33 kilo-ohms; the fourth resistance is 8.06 kilo-ohms.
Optionally, the method further includes: the second voltage conversion device is connected with the first voltage conversion device, and/or the third voltage conversion device is used for supplying power to the torque measuring equipment;
a second voltage input end of the second voltage conversion device is connected with a first voltage output end of the first voltage conversion device;
and a third voltage input end of the third voltage conversion device is connected with a first voltage output end of the first voltage conversion device.
Optionally, a voltage of a second voltage output end of the second voltage conversion device is 3.3V;
and the voltage of a third voltage output end of the third voltage conversion device is 5V.
Optionally, the power transmission module includes:
the direct current input end is connected with the thirteenth capacitor, the fourteenth capacitor, one end of the first inductor, and a voltage input pin and an enabling pin of the voltage stabilizer; the other ends of the thirteenth capacitor and the fourteenth capacitor are grounded; the ground pin of the voltage stabilizer is grounded;
the other end of the first inductor is connected with a fifteenth capacitor, one end of a sixteenth capacitor, a first switch node pin and a second switch node pin of the voltage stabilizer;
the other end of each of the fifteenth capacitor and the sixteenth capacitor is connected with one end of the second inductor and the anode of the second diode; the other end of the second inductor is grounded; the cathode of the second diode is connected with one end of a fifth resistor, one end of a seventeenth capacitor, one end of an eighteenth capacitor, one end of a nineteenth capacitor and a second pin of the direct current-to-alternating current module;
the other ends of the seventeenth capacitor, the eighteenth capacitor and the nineteenth capacitor are all grounded; the other end of the fifth resistor is connected with the sixth resistor, one end of the seventh resistor and a feedback pin of the voltage stabilizer; the other end of the sixth resistor is grounded; the other end of the seventh resistor is connected with a third pin of the transistor; the second pin of the transistor is grounded;
a first pin of the direct current-to-alternating current module is grounded; the third pin and the fourth pin of the direct current-to-alternating current module are both connected with the sending coil;
the thirteenth capacitor is 220 microfarads; the fourteenth capacitance is 1 microfarad; the fifteenth capacitance is 10 microfarads; the sixteenth capacitor is 22 microfarads; the seventeenth capacitor is 100 microfarads; the eighteenth capacitor is 100 microfarads; the nineteenth capacitor is 1 microfarad; the fifth resistance is 7.15 kilo-ohms; the sixth resistance is 1 kilo-ohm; the seventh resistance is 4.99 kilo-ohms.
As can be seen from the foregoing, the wireless power supply apparatus for a torque measuring device according to an embodiment of the present invention may include: the power transmission module is used for generating a first alternating voltage; the transmitting coil is connected with the power transmission transmitting module and used for receiving the first alternating voltage; a receiving coil arranged in parallel with the transmitting coil for generating a second alternating voltage; the input interface is connected with the receiving coil, is connected with a first pin of the rectifier bridge through a first voltage input pin, and is connected with a second pin of the rectifier bridge through a second voltage input pin; for sending the second alternating voltage to the rectifier bridge; the third pin of the rectifier bridge is connected with the anode of the diode; the fourth pin of the rectifier bridge is connected with the cathode of the diode; the cathode of the diode is also connected with one end of a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor and an eighth capacitor; the positive pole of the diode is grounded and is connected with the other ends of the first capacitor, the second capacitor, the third capacitor, the fourth capacitor, the fifth capacitor, the sixth capacitor, the seventh capacitor and the eighth capacitor, so that direct current can be converted into alternating current to supply power to the transmitting coil through the power transmission transmitting module, according to the electromagnetic theory, the receiving coil can generate alternating current, and then the alternating current is converted into direct current voltage to supply power to the torque measuring equipment through the rectifier bridge, the diode and the capacitors. Of course, not all of the advantages described above need to be achieved at the same time in the practice of any one product or method of the invention.
The innovation points of the embodiment of the invention comprise:
1. direct current is converted into alternating current to supply power to the transmitting coil through the power transmission transmitting module, according to the electromagnetic theory, the receiving coil can generate alternating current, and then the alternating current is changed into direct current voltage through the rectifier bridge, the diode and each capacitor to supply power for the torque measuring equipment.
2. The voltage value suitable for the working of each device in the torque measuring equipment can be obtained through conversion by the voltage conversion device, and the normal working of the torque measuring equipment is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is to be understood that the drawings in the following description are merely exemplary of some embodiments of the invention. For a person skilled in the art, without inventive effort, further figures can be obtained from these figures.
Fig. 1 is a schematic structural diagram of a wireless power supply apparatus according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a first voltage conversion device according to an embodiment of the invention;
fig. 3 is a schematic structural diagram of a power transmission module according to an embodiment of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
It is to be noted that the terms "comprises" and "comprising" and any variations thereof in the embodiments and drawings of the present invention are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
The embodiment of the invention discloses a wireless power supply device for torque measurement equipment, which can improve the accuracy of a torque measurement result.
In the embodiment of the invention, in order to reduce signal fluctuation caused by supplying power to the torque measuring equipment through the conductive slip ring, the torque measuring equipment can be supplied with power in a wireless power supply mode. Specifically, according to the electromagnetic theory, when an alternating current flows through one coil, an alternating voltage is generated in the other coil which is arranged in parallel with the coil. Therefore, the wireless power supply device can be provided for supplying power to the torque measuring equipment. The following provides a detailed description of embodiments of the invention.
Fig. 1 is a schematic structural diagram of a wireless power supply device for a torque measurement apparatus according to an embodiment of the present invention. The wireless power supply device for the torque measuring equipment can comprise:
the power transmission module is used for generating a first alternating voltage;
the transmitting coil is connected with the power transmission transmitting module and used for receiving the first alternating voltage;
a receiving coil arranged in parallel with the transmitting coil for generating a second alternating voltage;
the input interface P3 connected with the receiving coil is connected with a first pin of the rectifier bridge D2 through a first voltage input pin and is connected with a second pin of the rectifier bridge D2 through a second voltage input pin; for sending the second alternating voltage to rectifier bridge D2;
a third pin of the rectifier bridge D2 is connected to the anode of the first diode D4; a fourth pin of the rectifier bridge D2 is connected with the negative electrode of the first diode D4;
the cathode of the first diode D4 is further connected with one end of a first capacitor C8, a second capacitor C9, a third capacitor C10, a fourth capacitor C11, a fifth capacitor C12, a sixth capacitor C13, a seventh capacitor C14 and an eighth capacitor C15;
the positive electrode of the first diode D4 is grounded, and is connected to the other ends of the first capacitor C8, the second capacitor C9, the third capacitor C10, the fourth capacitor C11, the fifth capacitor C12, the sixth capacitor C13, the seventh capacitor C14, and the eighth capacitor C15.
The power transmission transmitting module converts direct current into alternating current to supply power to the transmitting coil, and the receiving coil can generate alternating current according to an electromagnetic theory. The alternating voltage generated by the receiving coil is changed into 35V direct voltage through the rectifier bridge, the diode and each capacitor, and then the power supply can be provided for the torque measuring equipment. The power supply device belongs to a wireless power supply device because the transmitting coil and the receiving coil are in wireless connection.
The first capacitor C8, the second capacitor C9, the third capacitor C10, the fourth capacitor C11, the fifth capacitor C12, the sixth capacitor C13, the seventh capacitor C14 and the eighth capacitor C15 are all 10 microfarads.
The first diode D4, i.e., the tvs SMAJ33A, has an operating peak reverse voltage of 33V, a breakdown voltage of 36.7V or less, and a breakdown voltage of 40.6V or less. The capacitors are used for filtering and also can play a role in storing energy. D2 functions as a rectifier bridge and converts alternating current to direct current. D4 is a transient suppressor diode that clamps the voltage at 33V and also enables the protection device.
As can be seen from the above, the wireless power supply device provided in the embodiment of the present invention can convert a direct current into an alternating current through the power transmission module to supply power to the transmitting coil, and according to the electromagnetic theory, the receiving coil can generate an alternating current, and further, the alternating current is converted into a direct current voltage through the rectifier bridge, the diode and the capacitors to supply power to the torque measurement device.
As an implementation manner of the embodiment of the present invention, the voltage of the negative electrode of the first diode D4 is 35V. That is, the output voltage of the wireless power supply device is 35V.
It will be appreciated that the torque measuring device may include a plurality of devices, for example, analog-to-digital conversion devices, wireless data transmission devices, and the like. Also, the required input voltage for each device is not exactly the same.
Therefore, the wireless power supply device of the embodiment of the present invention may further include a first voltage conversion device. A first voltage input end of the first voltage conversion device is connected with the cathode of a first diode D4; the voltage at the first voltage output end of the first voltage conversion device is 5.1V.
In one implementation, as shown in fig. 2, the first voltage conversion device may include:
a first Voltage Input terminal, which is connected to the ninth capacitor C39, the tenth capacitor C40, one end of the first resistor R29, and pin 3 of the converter, i.e., VIN (Voltage Input) pin;
the other ends of the ninth capacitor C39 and the tenth capacitor C40 are grounded;
a first resistor R29, the other end of which is connected to one end of the second resistor R2 and pin 4 of the converter, i.e., EN (enable) pin; the other end of the second resistor R2 is grounded; pin 2 of the converter, i.e., the MODE/SYNC pin, is grounded;
the first Voltage Output end is connected with one end of a pin 6 of the converter, namely a VOUT (Voltage Output) pin, a third resistor R30, an eleventh capacitor C41 and a twelfth capacitor C42;
the other ends of the eleventh capacitor C41 and the twelfth capacitor C42 are grounded;
the other end of the third resistor R30 is connected to pin 7, i.e., a Feedback (FB) pin, of the converter and one end of the fourth resistor R31; the other end of the fourth resistor R31 is grounded;
pin 1, i.e., the GND (Ground) pin, and pin 11, i.e., the PAD (Thermal PAD) pin, of the converter are grounded.
The transducer may be an LMZM23601 SILR. The 35V voltage is converted to a voltage of 5.1V by a non-isolated DC/DC converter LMZM23601 SILR. The chip LMZM23601SILR has a wide working input voltage of 1.4V to 36V, and an adjustable output voltage of 2.5V to 15V.
Wherein, the ninth capacitor C39 is 10 microfarads; the tenth capacitor C40 is 100 nanofarads; the eleventh capacitor C41 is 22 microfarads; the twelfth capacitor C42 is 100 nanofarads.
The ninth capacitor C39, the tenth capacitor C40, the eleventh capacitor C41 and the twelfth capacitor C42 all have filtering functions, and more accurate and stable voltage is obtained. The smaller the capacitance, the stronger the high-frequency filtering capability, and the larger the capacitance, the stronger the low-frequency filtering capability. The ninth capacitor C39 and the eleventh capacitor C41 also have the function of energy storage.
The first resistor R29 is 220 kilo-ohms; the second resistor R2 is 143 kilo-ohms; the third resistor R30 is 33 kilo-ohms; the fourth resistor R31 is 8.06 kilo-ohms.
The FB pin voltage is 1V, so that the voltage of 5.1V can be proportionally output by using the third resistor R30 and the fourth resistor R31. The enabling voltage of the LMZM23601SILR chip is 1.8V, and the external voltage divider is added to set the input voltage of the voltage stabilizer for starting voltage conversion.
In one implementation manner, the wireless power supply apparatus provided in the embodiment of the present invention may further include: a second voltage conversion device connected to the first voltage conversion device and/or a third voltage conversion device for supplying power to the torque measuring device.
The second voltage input end of the second voltage conversion device is connected with the first voltage output end of the first voltage conversion device; a third voltage input terminal of the third voltage conversion device is connected with the first voltage output terminal of the first voltage conversion device. The voltage at the second voltage output end of the second voltage conversion device is 3.3V. The voltage at the third voltage output terminal of the third voltage conversion device is 5V.
The voltage values suitable for the working of all devices in the torque measuring equipment can be obtained through conversion of all the voltage conversion devices, and the normal working of the torque measuring equipment is ensured.
In one implementation, as shown in fig. 3, a power transmission module according to an embodiment of the present invention may include:
a direct current Input end connected to the thirteenth capacitor C29, the fourteenth capacitor C30, one end of the first inductor L5, a pin 4 of the Voltage regulator, i.e., a VIN (Voltage Input) pin, and a pin 2, i.e., an EN (enable) pin; a thirteenth capacitor C29 and a fourteenth capacitor C30, the other end of which is grounded; pin 1 of the voltage regulator, namely, a GND (Ground) pin is grounded;
a first inductor L5, the other end of which is connected to one end of a fifteenth capacitor C40, one end of a sixteenth capacitor C1, and pins 3 and 6 of the regulator, i.e., SW (switch node) pins;
the other ends of the fifteenth capacitor C40 and the sixteenth capacitor C1 are connected to one end of the second inductor L4 and the anode of the second diode D2; a second inductor L4, the other end of which is grounded; the cathode of the second diode D2 is connected to one end of the fifth resistor R6, the seventeenth capacitor C31, the eighteenth capacitor C91, one end of the nineteenth capacitor C92 and the second pin of the dc-to-ac module;
a seventeenth capacitor C31, an eighteenth capacitor C91 and a nineteenth capacitor C92, the other ends of which are all grounded; a fifth resistor R6, the other end of which is connected to the sixth resistor R60, one end of the seventh resistor R10, and a pin 5 of the regulator, i.e., a FB (FeedBack) pin; a sixth resistor R60, the other end of which is grounded; a seventh resistor R10, the other end of which is connected with the third pin of the transistor Q2; a transistor Q2, the second pin being connected to ground;
a first pin of the direct current-to-alternating current module is grounded; and the third pin and the fourth pin of the direct current-to-alternating current module are both connected with the sending coil.
The voltage regulator may be XL6009E 1. The input direct current voltage passes through an XL6009E1 voltage regulator, which is a voltage regulator with wide input range and capable of generating positive and negative voltages, and the voltage required by the coil is output.
The thirteenth capacitor C29 is 220 microfarads; the fourteenth capacitance C30 is 1 microfarad; the fifteenth capacitor C40 is 10 microfarads; a sixteenth capacitor C1 of 22 microfarads; a seventeenth capacitor C31 of 100 microfarads; the eighteenth capacitor C91 is 100 microfarads; the nineteenth capacitor C92 is 1 microfarad; the fifth resistor R6 is 7.15 kilo-ohms; the sixth resistor R60 is 1 kilo-ohm; the seventh resistor R10 is 4.99 kohms.
The second inductor L4, the first inductor L5, and the sixteenth capacitor C1 function as energy storage. The fifth resistor R6, the sixth resistor R60, the seventh resistor R10, and the transistor Q2 function to regulate the magnitude of the voltage output.
Those of ordinary skill in the art will understand that: the figures are merely schematic representations of one embodiment, and the blocks or flow diagrams in the figures are not necessarily required to practice the present invention.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A wirelessly powered device for a torque measuring apparatus, comprising:
the power transmission module is used for generating a first alternating voltage;
the transmitting coil is connected with the power transmission transmitting module and used for receiving the first alternating voltage;
a receiving coil arranged in parallel with the transmitting coil for generating a second alternating voltage;
an input interface (P3) connected with the receiving coil, connected with a first pin of a rectifier bridge (D2) through a first voltage input pin, and connected with a second pin of the rectifier bridge (D2) through a second voltage input pin; for sending the second alternating voltage to the rectifier bridge (D2);
the third pin of the rectifier bridge (D2) is connected with the anode of a first diode (D4); a fourth pin of the rectifier bridge (D2) is connected with the negative electrode of the first diode (D4);
the negative electrode of the first diode (D4) is also connected with one end of a first capacitor (C8), a second capacitor (C9), a third capacitor (C10), a fourth capacitor (C11), a fifth capacitor (C12), a sixth capacitor (C13), a seventh capacitor (C14) and an eighth capacitor (C15);
the anode of the first diode (D4) is grounded and is connected with the other ends of the first capacitor (C8), the second capacitor (C9), the third capacitor (C10), the fourth capacitor (C11), the fifth capacitor (C12), the sixth capacitor (C13), the seventh capacitor (C14) and the eighth capacitor (C15).
2. The wireless power supply apparatus according to claim 1,
the first capacitor (C8), the second capacitor (C9), the third capacitor (C10), the fourth capacitor (C11), the fifth capacitor (C12), the sixth capacitor (C13), the seventh capacitor (C14) and the eighth capacitor (C15) are all 10 microfarads.
3. The wireless power supply apparatus according to claim 1,
and the voltage of the cathode of the first diode (D4) is 35V.
4. The wireless power supply apparatus according to claim 1 or 2, further comprising: a first voltage conversion device;
a first voltage input end of the first voltage conversion device is connected with a negative electrode of the first diode (D4);
the voltage of the first voltage output end of the first voltage conversion device is 5.1V.
5. The wireless power supply apparatus according to claim 4, wherein the first voltage conversion apparatus comprises:
the first voltage input end is connected with the ninth capacitor (C39), the tenth capacitor (C40), one end of the first resistor (R29) and a voltage input pin of the converter;
the other ends of the ninth capacitor (C39) and the tenth capacitor (C40) are grounded;
the other end of the first resistor (R29) is connected with one end of a second resistor (R2) and an enable pin of the converter; the other end of the second resistor (R2) is grounded; the mode/sync pin of the converter is grounded;
the first voltage output end is connected with one end of a voltage output pin of the converter, one end of a third resistor (R30), one end of an eleventh capacitor (C41) and one end of a twelfth capacitor (C42);
the other ends of the eleventh capacitor (C41) and the twelfth capacitor (C42) are grounded;
the other end of the third resistor (R30) is connected with a feedback pin of the converter and one end of a fourth resistor (R31); the other end of the fourth resistor (R31) is grounded;
the ground pins and the heat conducting pad pins of the converter are grounded.
6. The wireless power supply apparatus according to claim 5,
the ninth capacitance (C39) is 10 microfarads; the tenth capacitance (C40) is 100 nanofarads; the eleventh capacitance (C41) is 22 microfarads; the twelfth capacitor (C42) is 100 nanofarads.
7. The wireless power supply apparatus according to claim 5,
the first resistance (R29) is 220 kilo-ohms; the second resistance (R2) is 143 kilo-ohms; the third resistance (R30) is 33 kilo-ohms; the fourth resistance (R31) is 8.06 kilo-ohms.
8. The wireless power supply apparatus according to claim 4, further comprising: the second voltage conversion device is connected with the first voltage conversion device, and/or the third voltage conversion device is used for supplying power to the torque measuring equipment;
a second voltage input end of the second voltage conversion device is connected with a first voltage output end of the first voltage conversion device;
and a third voltage input end of the third voltage conversion device is connected with a first voltage output end of the first voltage conversion device.
9. The wireless power supply apparatus according to claim 8,
the voltage of a second voltage output end of the second voltage conversion device is 3.3V;
and the voltage of a third voltage output end of the third voltage conversion device is 5V.
10. The wireless power supply device according to any one of claims 1 to 9, wherein the power transmission module includes:
the direct current input end is connected with the thirteenth capacitor (C29), the fourteenth capacitor (C30), one end of the first inductor (L5), and a voltage input pin and an enabling pin of the voltage stabilizer; the thirteenth capacitor (C29) and the fourteenth capacitor (C30) are connected with the other end of the ground; the ground pin of the voltage stabilizer is grounded;
the other end of the first inductor (L5) is connected with one end of a fifteenth capacitor (C40), one end of a sixteenth capacitor (C1), and a first switching node pin and a second switching node pin of the voltage stabilizer;
the other end of each of the fifteenth capacitor (C40) and the sixteenth capacitor (C1) is connected with one end of a second inductor (L4) and the anode of a second diode (D2); the second inductor (L4), the other end is grounded; the cathode of the second diode (D2) is connected with one end of a fifth resistor (R6), a seventeenth capacitor (C31), an eighteenth capacitor (C91), one end of a nineteenth capacitor (C92) and a second pin of the direct current-to-alternating current module;
the seventeenth capacitor (C31), the eighteenth capacitor (C91) and the nineteenth capacitor (C92) are all grounded at the other ends; the other end of the fifth resistor (R6) is connected with a sixth resistor (R60), one end of a seventh resistor (R10) and a feedback pin of the voltage stabilizer; the other end of the sixth resistor (R60) is grounded; the other end of the seventh resistor (R10) is connected with a third pin of a transistor (Q2); the transistor (Q2), the second pin is grounded;
a first pin of the direct current-to-alternating current module is grounded; the third pin and the fourth pin of the direct current-to-alternating current module are both connected with the sending coil;
the thirteenth capacitance (C29) is 220 microfarads; the fourteenth capacitance (C30) is 1 microfarad; the fifteenth capacitance (C40) is 10 microfarads; the sixteenth capacitance (C1) is 22 microfarads; the seventeenth capacitor (C31) is 100 microfarads; said eighteenth capacitor (C91) is 100 microfarads; the nineteenth capacitor (C92) is 1 microfarad; the fifth resistance (R6) is 7.15 kilo-ohms; the sixth resistance (R60) is 1 kilo-ohm; the seventh resistance (R10) is 4.99 kohms.
CN201911338148.5A 2019-12-23 2019-12-23 Wireless power supply device for torque measurement equipment Pending CN110855019A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911338148.5A CN110855019A (en) 2019-12-23 2019-12-23 Wireless power supply device for torque measurement equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911338148.5A CN110855019A (en) 2019-12-23 2019-12-23 Wireless power supply device for torque measurement equipment

Publications (1)

Publication Number Publication Date
CN110855019A true CN110855019A (en) 2020-02-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201911338148.5A Pending CN110855019A (en) 2019-12-23 2019-12-23 Wireless power supply device for torque measurement equipment

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Country Link
CN (1) CN110855019A (en)

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