CN214666600U - Coil alignment detection circuit and electronic equipment - Google Patents
Coil alignment detection circuit and electronic equipment Download PDFInfo
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- CN214666600U CN214666600U CN202120616891.9U CN202120616891U CN214666600U CN 214666600 U CN214666600 U CN 214666600U CN 202120616891 U CN202120616891 U CN 202120616891U CN 214666600 U CN214666600 U CN 214666600U
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Abstract
The embodiment of the utility model provides a relate to wireless field of charging, in particular to coil counterpoint detection circuitry and electronic equipment. An embodiment of the utility model provides a coil counterpoint detection circuitry and electronic equipment, this circuit includes: the device comprises a receiving coil, a voltage detection circuit, a reference signal circuit, a comparison unit and a control unit; the first end of the voltage detection circuit is connected with the first end of the receiving coil, the second end of the voltage detection circuit is connected with the first end of the comparison unit, the third end of the voltage detection circuit is connected with the first end of the reference signal circuit, the second end of the comparison unit is connected with the second end of the reference signal circuit, and the third end of the comparison unit is connected with the first end of the control unit; the circuit outputs a comparison signal to the control unit through the comparison unit according to the voltage of the receiving coil acquired by the voltage detection circuit and the reference voltage provided by the reference signal circuit, and then the control unit detects whether the receiving coil is aligned successfully or not according to the comparison signal, so that the alignment detection of the transmitting coil and the receiving coil is realized.
Description
Technical Field
The embodiment of the utility model provides a relate to wireless field of charging, in particular to coil counterpoint detection circuitry and electronic equipment.
Background
Currently, wireless power supply technology has achieved productized and standardized non-contact charging. The coil induction is adopted to realize energy transmission, charging distance induction detection and load change self-regulation technology, so that the device is suitable for non-contact charging of various mobile robots or devices (such as an AGV (automatic guided vehicle), an electric bicycle, a golf cart, an inspection robot, a service robot and the like), can realize the full automation of the battery charging process, and is convenient to use and simple to maintain.
At present, the alignment detection technology of the coil is not generally realized for the wireless power supply system.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a main technical problem who solves provides a coil counterpoint detection circuitry and electronic equipment, can realize transmitting coil and receiving coil's counterpoint and detect.
In a first aspect, an embodiment of the present invention provides a method for processing a semiconductor device, comprising: provided is a coil alignment detection circuit including: the device comprises a receiving coil, a voltage detection circuit, a reference signal circuit, a comparison unit and a control unit; the receiving coil is used for receiving energy of the transmitting end during wireless charging; the first end of the voltage detection circuit is connected with the first end of the receiving coil, the second end of the voltage detection circuit is connected with the first end of the comparison unit, the third end of the voltage detection circuit is connected with the first end of the reference signal circuit, and the voltage detection circuit is used for collecting the voltage of the receiving coil and inputting the voltage to the comparison unit; the second end of the reference signal circuit is connected with the second end of the comparison unit, the reference signal circuit is used for providing a reference voltage to the second end of the comparison unit, and the comparison unit is used for outputting a comparison signal to the control unit according to the voltage and the reference voltage; and the third end of the comparison unit is connected with the first end of the control unit, and the control unit is used for detecting whether the receiving coil is successfully aligned according to the comparison signal.
In some embodiments, the coil alignment detection circuit further comprises a first diode connected in series between the receiving coil and the voltage detection circuit, an anode of the first diode is connected to the first end of the receiving coil, and a cathode of the first diode is connected to the first end of the voltage detection circuit.
In some embodiments, the voltage detection circuit includes a first voltage dividing resistor, a second voltage dividing resistor, and a third voltage dividing resistor; a first end of the first voltage-dividing resistor is connected with a cathode of the first diode, and a second end of the first voltage-dividing resistor is respectively connected with a first end of the second voltage-dividing resistor and a first end of the comparison unit; the second end of the second voltage-dividing resistor is respectively connected with the first end of the third voltage-dividing resistor and the first end of the reference signal circuit, and the second end of the third voltage-dividing resistor is grounded.
In some embodiments, the voltage detection circuit further includes a second diode connected in series between the second voltage-dividing resistor and the reference signal circuit, an anode of the second diode is connected to the second terminal of the second voltage-dividing resistor, and a cathode of the second diode is connected to the first terminal of the reference signal circuit.
In some embodiments, the voltage detection circuit further comprises a first capacitor; one end of the first capacitor is connected with one end of the first voltage dividing resistor, and the other end of the first capacitor is grounded.
In some embodiments, the reference signal circuit includes a first reference resistance, a second reference resistance; the first end of the first reference resistor is connected with a first power supply, and the second end of the first reference resistor is respectively connected with the third end of the voltage detection circuit and the second end of the comparison unit; the first end of the second reference resistor is connected with the second end of the first reference resistor, and the second end of the second reference resistor is grounded.
In some embodiments, the reference signal circuit further comprises a second capacitance; one end of the second capacitor is connected with the first end of the second reference resistor, and the other end of the second capacitor is grounded.
In some embodiments, the comparison unit is a comparator; the reverse input end of the comparator is connected with the second end of the voltage detection circuit, the same-direction input end of the comparator is connected with the first end of the reference signal circuit, and the output end of the comparator is connected with the first end of the control unit.
In some embodiments, the coil alignment detection circuit further comprises a switching unit; the input end of the switch unit is connected with the second end of the receiving coil, the output end of the switch unit is connected with the load, the control end of the switch unit is connected with the second end of the control unit, the control unit is further used for outputting a control signal to the switch unit according to the comparison signal, and the switch unit is used for switching on or switching off the connection between the input end and the output end according to the control signal.
In a second aspect, an embodiment of the present invention provides an electronic device, including the coil alignment detection circuit according to any one of the first aspect.
The utility model discloses embodiment's beneficial effect is: be different from prior art's condition, the embodiment of the utility model provides a coil counterpoint detection circuitry and electronic equipment is provided, this circuit includes: the device comprises a receiving coil, a voltage detection circuit, a reference signal circuit, a comparison unit and a control unit; the first end of the voltage detection circuit is connected with the first end of the receiving coil, the second end of the voltage detection circuit is connected with the first end of the comparison unit, the third end of the voltage detection circuit is connected with the first end of the reference signal circuit, the second end of the comparison unit is connected with the second end of the reference signal circuit, and the third end of the comparison unit is connected with the first end of the control unit; the circuit outputs a comparison signal to the control unit through the comparison unit according to the voltage of the receiving coil acquired by the voltage detection circuit and the reference voltage provided by the reference signal circuit, and then the control unit detects whether the receiving coil is aligned successfully or not according to the comparison signal, so that the alignment detection of the transmitting coil and the receiving coil is realized.
Drawings
One or more embodiments are illustrated by the accompanying figures in the drawings that correspond thereto and are not to be construed as limiting the embodiments, wherein elements/modules and steps having the same reference numerals are represented by like elements/modules and steps, unless otherwise specified, and the drawings are not to scale.
Fig. 1 is a schematic diagram of a structure block diagram of a coil alignment detection circuit according to an embodiment of the present invention;
fig. 2 is a schematic circuit structure diagram of a coil alignment detection circuit according to an embodiment of the present invention;
fig. 3 is a schematic diagram of another coil alignment detection circuit according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
In order to facilitate an understanding of the present application, the present application is described in more detail below with reference to the accompanying drawings and specific embodiments. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It should be noted that, if not conflicted, the various features of the embodiments of the invention can be combined with each other and are within the scope of protection of the present application. In addition, although the functional blocks are divided in the device diagram, in some cases, the blocks may be divided differently from those in the device. Further, the terms "first," "second," and the like, as used herein, do not limit the data and the execution order, but merely distinguish the same items or similar items having substantially the same functions and actions.
The utility model discloses a technical scheme that embodiment adopted is: referring to fig. 1, the coil alignment detection circuit 100 includes a receiving coil 10, a voltage detection circuit 20, a reference signal circuit 30, a comparison unit 40, and a control unit 50: the receiving coil 10 is used for receiving energy of a transmitting end during wireless charging; the first end of the voltage detection circuit 20 is connected with the first end of the receiving coil 10, the second end of the voltage detection circuit 20 is connected with the first end of the comparison unit 40, the third end of the voltage detection circuit 20 is connected with the first end of the reference signal circuit 30, and the voltage detection circuit 20 is used for collecting the voltage of the receiving coil 10 and inputting the voltage to the comparison unit 40; a second terminal of the reference signal circuit 30 is connected to a second terminal of the comparison unit 40, the reference signal circuit 30 is configured to provide a reference voltage to the second terminal of the comparison unit 40, and the comparison unit 40 is configured to output a comparison signal to the control unit 50 according to the voltage and the reference voltage; the third terminal of the comparing unit 40 is connected to the first terminal of the control unit 50, and the control unit 50 is configured to detect whether the receiving coil 10 is successfully aligned according to the comparison signal.
In the coil alignment detection circuit 100, a user can set the reference signal circuit 30 according to the critical offset of the transmitting coil and the receiving coil, so that the reference signal circuit 30 can output a reference signal corresponding to the critical offset; then, the voltage detection circuit 20 collects the voltage of the receiving coil 10, when the voltage of the receiving coil 10 collected by the voltage detection circuit 20 is lower than the reference voltage provided by the reference signal circuit 30, the comparison unit 40 outputs a first comparison signal to the control unit 50, and the control unit 50 detects that the alignment of the receiving coil 10 is unsuccessful according to the first comparison signal, that is, the offset of the receiving coil 10 and the transmitting coil exceeds the preset offset range at this time; when the voltage of the receiving coil 10 collected by the voltage detection circuit 20 is higher than the reference voltage provided by the reference signal circuit 30, the comparison unit 40 outputs a second comparison signal to the control unit 50, and the control unit 50 detects that the alignment of the receiving coil 10 is successful according to the second comparison signal. The coil alignment detection circuit determines whether the receiving coil 10 is successfully aligned by the comparison signal output from the comparison unit 40, thereby detecting whether the receiving coil 10 and the transmitting coil are successfully aligned.
In practical applications, the critical offset may be set according to actual needs, for example, the critical offset may be set according to an offset that the system can just perform wireless charging, or according to an offset at the time of the minimum charging efficiency required by the system, or any other suitable rule, which is not limited herein.
Specifically, the control unit 50 may adopt STM16, STM32 series or any other suitable micro-control processor for receiving, processing and outputting data, and in practical applications, the specific model of the control unit 50 may be set according to practical needs, and is not limited herein.
In some embodiments, referring to fig. 2, the coil alignment detection circuit further includes a first diode D1, wherein the first diode D1 is connected in series between the receiving coil 10 and the voltage detection circuit 20, an anode of the first diode D1 is connected to the first end of the receiving coil 10, and a cathode of the first diode D1 is connected to the first end of the voltage detection circuit 20. When wireless charging is performed, the receiving coil 10 generates magnetic field induction, the current direction of the receiving coil is changed, and the first diode D1 is arranged to prevent the coil alignment detection circuit from being reversely biased, so that the coil alignment detection circuit works normally.
In some embodiments, with continued reference to fig. 2, the voltage detection circuit 20 includes a first voltage dividing resistor R1, a second voltage dividing resistor R2, and a third voltage dividing resistor R3; a first end of the first voltage-dividing resistor R1 is connected to the cathode of the first diode D1, and a second end of the first voltage-dividing resistor R1 is connected to a first end of the second voltage-dividing resistor R2 and a first end of the comparing unit 40, respectively; a second terminal of the second voltage-dividing resistor R2 is connected to the first terminal of the third voltage-dividing resistor R3, the first terminal of the reference signal circuit 30, and the second terminal of the comparing unit 40, respectively, and a second terminal of the third voltage-dividing resistor R3 is grounded. At this time, the voltage value inputted to the first terminal of the comparing unit 40 is the voltage value V1 at the second terminal of the first voltage dividing resistor R1 after the voltage of the receiving coil 10 is divided by the voltage detecting circuit 20. In practical applications, the number and the value of the voltage dividing resistors of the voltage detecting circuit 20 can be set according to actual needs, and the limitation in the embodiment is not required.
In some embodiments, with reference to fig. 2, the voltage detecting circuit 20 further includes a second diode D2, the second diode D2 is connected between the second voltage-dividing resistor R2 and the reference signal circuit 30 in series, an anode of the second diode D2 is connected to the second terminal of the second voltage-dividing resistor R2, and a cathode of the second diode D2 is connected to the first terminal of the reference signal circuit 30. The second diode D2 prevents the voltage of the reference signal circuit 30 from affecting the voltage division of the voltage detection circuit 20, so that the voltage detection circuit 20 operates normally.
In some embodiments, referring again to fig. 2, the voltage detection circuit 20 further includes a first capacitor C1; one end of the first capacitor C1 is connected to one end of the first voltage dividing resistor R1, and the other end of the first capacitor C1 is grounded. The first capacitor C1 may filter the voltage input to the voltage detection circuit 20 by the receiving coil 10.
In some embodiments, referring to fig. 2, the reference signal circuit 30 includes a first reference resistor Rf1, a second reference resistor Rf 2; a first terminal of the first reference resistor Rf1 is connected to the first power source VDD, and a second terminal of the first reference resistor Rf1 is connected to the third terminal of the voltage detection circuit 20 and the second terminal of the comparison unit 40, respectively; a first terminal of the second reference resistor Rf2 is connected to the second terminal of the first reference resistor Rf1, and a second terminal of the second reference resistor Rf2 is grounded. At this time, the voltage value of the reference voltage input to the second terminal of the comparing unit 40 is the voltage value V2 of the second terminal of the first reference resistor Rf1 after the first power source VDD passes through the first reference resistor Rf1, and the equivalent resistor of the second reference resistor Rf2 and the second diode D2, and the third voltage dividing resistor R3 are divided in parallel. In practical applications, the first power supply VDD may be a +5V power supply or any other suitable power supply, and the number and value of the reference resistors of the reference signal circuit 30 may be set according to practical requirements, which is not limited herein.
In some embodiments, referring again to fig. 2, the reference signal circuit 30 further includes a second capacitor C2; one end of the second capacitor C2 is connected to the first end of the second reference resistor Rf2, and the other end of the second capacitor C2 is grounded. The second capacitor C2 may filter the reference voltage.
In some embodiments, referring to fig. 2, the comparing unit 40 includes a comparator U1; the inverting input terminal of the comparator U1 is connected to the second terminal of the voltage detection circuit 20, the non-inverting input terminal of the comparator U1 is connected to the first terminal of the reference signal circuit 30, and the output terminal of the comparator U1 is connected to the first terminal of the control unit 50. The comparator U1 can be used to compare the input voltages of two input terminals, specifically, when the voltage at the positive input terminal of the comparator U1 is higher than the voltage at the negative input terminal of the comparator U1, the output of the comparator U1 is at a high level; when the positive input of comparator U1 is lower than the negative input of comparator U1, the comparator output is low.
In some embodiments, with continued reference to fig. 2, the comparing unit 40 further includes a first current limiting resistor R5, and the first current limiting resistor R5 is connected in series between the output terminal of the comparator and the first terminal of the control unit 50. By providing the first current limiting resistor R5, the magnitude of the comparison signal output by the comparison unit 40 can be limited, and damage to the control unit 50 can be avoided.
In order to prevent the circuit from oscillating, in some embodiments, please continue to refer to fig. 2, the comparing unit 40 further includes a positive feedback resistor R4, wherein one end of the positive feedback resistor R4 is connected to the positive input terminal of the comparator, and the other end of the positive feedback resistor R4 is connected to the output terminal of the comparator, and the circuit can be prevented from oscillating by providing the positive feedback resistor R4.
In some embodiments, referring to fig. 3, the coil alignment detection circuit further includes a switch unit 60; wherein, the input end of the switch unit 60 is connected to the second end of the receiving coil 10, the output end of the switch unit 60 is connected to the load 200, the control end of the switch unit 60 is connected to the second end of the control unit 50, the control unit 50 is further configured to output a control signal to the switch unit 60 according to the comparison signal, and the switch unit 60 is configured to turn on or turn off the connection between the input end and the output end according to the control signal. Specifically, when the comparing unit 40 outputs the first comparison signal to the control unit 50, the control unit 50 outputs the first control signal to the switching unit 60, and the switching unit 60 disconnects the input terminal and the output terminal; when the comparing unit 40 outputs the second comparison signal to the control unit 50, the control unit 50 outputs the second control signal to the switching unit 60, and the switching unit 60 switches on the connection between the input terminal and the output terminal. Specifically, referring to fig. 2, the switching unit 60 employs a PMOS transistor Q1, a source of the PMOS transistor Q1 is connected to the second end of the receiving coil 10, a drain of the PMOS transistor Q1 is connected to the load 200, and a gate of the PMOS transistor Q1 is connected to the second end of the control unit 50.
The specific working process of the coil alignment detection circuit provided by the present invention is described in detail below with reference to the embodiment shown in fig. 2. Wherein, the first power supply VDD adopts a +5V power supply.
The coil alignment detection circuit obtains power from the receiving coil 10 through the first diode D1, and the voltage is filtered through the first capacitor C1, then, after the voltage is divided by the voltage detection circuit 20, the voltage value V1 of the second end of the first voltage dividing resistor R1 is input to the reverse input end of the comparator U1, meanwhile, after the +5V power is divided through the first reference resistor Rf1, the second reference resistor Rf2, the equivalent resistor of the second diode D2, and the third voltage dividing resistor R3, the voltage value V2 of the second end of the first reference resistor Rf1 is input to the same-direction input end of the comparator U1, and the voltage value V2 of the second end of the first reference resistor Rf1 is filtered through the second capacitor. When the voltage value V1 of the reverse input end of the comparator U1 is lower than the voltage value V2 of the equidirectional input end, the comparator U1 outputs a high level, the control unit 50 judges that the offset between the receiving coil 10 and the transmitting coil at this time exceeds a preset offset range, namely, the receiving coil 10 and the transmitting coil are not aligned successfully, the high level is output to the PMOS transistor Q1, the PMOS transistor Q1 is disconnected, and the receiving coil 10 does not supply power to the load 200; when the voltage value V1 of the inverting input terminal of the comparator U1 is higher than the voltage value of the non-inverting input terminal, the comparator U1 outputs a low level, and the control unit 50 determines that the offset between the receiving coil 10 and the transmitting coil is within the preset offset range at this time, that is, the receiving coil 10 and the transmitting coil are aligned successfully, at this time, the control unit 50 outputs a low level to the PMOS transistor, the PMOS transistor is turned on, and the receiving coil 10 supplies power to the load 200.
In conclusion, the coil alignment detection circuit can not only accurately detect whether the coil is successfully aligned, but also control the charging operation after the coil alignment is successfully detected, and has simple structure and easy design; meanwhile, the circuit is built by adopting conventional components, so that the production cost is low, mass production can be carried out, and the production of manufacturers is facilitated.
In a second aspect, an embodiment of the present invention provides an electronic device, including the coil alignment detection circuit according to any one of the first aspect. The coil alignment detection circuit judges whether the receiving coil is aligned successfully or not through a comparison signal output by the comparison unit, so that whether the receiving coil and the transmitting coil are aligned successfully or not is detected.
An embodiment of the utility model provides a coil counterpoint detection circuitry and electronic equipment, this circuit includes: the device comprises a receiving coil, a voltage detection circuit, a reference signal circuit, a comparison unit and a control unit; the first end of the voltage detection circuit is connected with the first end of the receiving coil, the second end of the voltage detection circuit is connected with the first end of the comparison unit, the third end of the voltage detection circuit is connected with the first end of the reference signal circuit, the second end of the comparison unit is connected with the second end of the reference signal circuit, and the third end of the comparison unit is connected with the first end of the control unit; the circuit outputs a comparison signal to the control unit through the comparison unit according to the voltage of the receiving coil acquired by the voltage detection circuit and the reference voltage provided by the reference signal circuit, and then the control unit detects whether the receiving coil is aligned successfully or not according to the comparison signal, so that the alignment detection of the transmitting coil and the receiving coil is realized.
It should be noted that the above-described device embodiments are merely illustrative, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; within the idea of the invention, also technical features in the above embodiments or in different embodiments can be combined, steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A coil alignment detection circuit, comprising: the device comprises a receiving coil, a voltage detection circuit, a reference signal circuit, a comparison unit and a control unit;
the receiving coil is used for receiving energy of the transmitting end during wireless charging;
the first end of the voltage detection circuit is connected with the first end of the receiving coil, the second end of the voltage detection circuit is connected with the first end of the comparison unit, the third end of the voltage detection circuit is connected with the first end of the reference signal circuit, and the voltage detection circuit is used for collecting the voltage of the receiving coil and inputting the voltage to the comparison unit;
the second end of the reference signal circuit is connected with the second end of the comparison unit, the reference signal circuit is used for providing a reference voltage to the second end of the comparison unit, and the comparison unit is used for outputting a comparison signal to the control unit according to the voltage and the reference voltage;
and the third end of the comparison unit is connected with the first end of the control unit, and the control unit is used for detecting whether the receiving coil is successfully aligned according to the comparison signal.
2. The coil alignment detection circuit of claim 1, further comprising a first diode connected in series between the receiving coil and the voltage detection circuit, wherein an anode of the first diode is connected to the first end of the receiving coil, and a cathode of the first diode is connected to the first end of the voltage detection circuit.
3. The coil alignment detection circuit according to claim 2, wherein the voltage detection circuit includes a first voltage dividing resistor, a second voltage dividing resistor, and a third voltage dividing resistor;
a first end of the first voltage-dividing resistor is connected with a cathode of the first diode, and a second end of the first voltage-dividing resistor is respectively connected with a first end of the second voltage-dividing resistor and a first end of the comparison unit;
the second end of the second voltage-dividing resistor is respectively connected with the first end of the third voltage-dividing resistor and the first end of the reference signal circuit, and the second end of the third voltage-dividing resistor is grounded.
4. The coil alignment detection circuit of claim 3, wherein the voltage detection circuit further comprises a second diode, the second diode is connected in series between the second voltage-dividing resistor and the reference signal circuit, an anode of the second diode is connected to the second terminal of the second voltage-dividing resistor, and a cathode of the second diode is connected to the first terminal of the reference signal circuit.
5. The coil alignment detection circuit of claim 4, wherein the voltage detection circuit further comprises a first capacitor; one end of the first capacitor is connected with one end of the first voltage dividing resistor, and the other end of the first capacitor is grounded.
6. The coil alignment detection circuit according to claim 1 or 2, wherein the reference signal circuit comprises a first reference resistance, a second reference resistance;
the first end of the first reference resistor is connected with a first power supply, and the second end of the first reference resistor is respectively connected with the third end of the voltage detection circuit and the second end of the comparison unit;
the first end of the second reference resistor is connected with the second end of the first reference resistor, and the second end of the second reference resistor is grounded.
7. The coil alignment detection circuit of claim 6, wherein the reference signal circuit further comprises a second capacitor; one end of the second capacitor is connected with the first end of the second reference resistor, and the other end of the second capacitor is grounded.
8. The coil alignment detection circuit according to claim 1 or 2, wherein the comparison unit is a comparator;
the reverse input end of the comparator is connected with the second end of the voltage detection circuit, the same-direction input end of the comparator is connected with the first end of the reference signal circuit, and the output end of the comparator is connected with the first end of the control unit.
9. The coil alignment detection circuit according to claim 1 or 2, further comprising a switching unit;
the input end of the switch unit is connected with the second end of the receiving coil, the output end of the switch unit is connected with the load, the control end of the switch unit is connected with the second end of the control unit, the control unit is further used for outputting a control signal to the switch unit according to the comparison signal, and the switch unit is used for switching on or switching off the connection between the input end and the output end according to the control signal.
10. An electronic device comprising the coil alignment detection circuit according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202120616891.9U CN214666600U (en) | 2021-03-25 | 2021-03-25 | Coil alignment detection circuit and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120616891.9U CN214666600U (en) | 2021-03-25 | 2021-03-25 | Coil alignment detection circuit and electronic equipment |
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| CN214666600U true CN214666600U (en) | 2021-11-09 |
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