CN215813004U - Alternating current sampling circuit based on Hall sensor - Google Patents
Alternating current sampling circuit based on Hall sensor Download PDFInfo
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- CN215813004U CN215813004U CN202121737136.2U CN202121737136U CN215813004U CN 215813004 U CN215813004 U CN 215813004U CN 202121737136 U CN202121737136 U CN 202121737136U CN 215813004 U CN215813004 U CN 215813004U
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- 238000005070 sampling Methods 0.000 title claims abstract description 32
- 239000003990 capacitor Substances 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses an alternating current sampling circuit based on a Hall sensor, which comprises: the Hall sensor circuit, the direct current power supply and the control unit; the Hall sensor circuit includes: a Hall sensor; the current input end of the Hall sensor is connected with an external alternating current power supply, the current output end of the Hall sensor is connected with external electric equipment, the sampling signal output end of the Hall sensor is connected with the current sampling control unit, the power supply end of the Hall sensor is connected with the direct current power supply, and the grounding end of the Hall sensor is grounded; and the control unit is used for calculating the real-time current value of the external alternating current power supply according to the sampling signal transmitted by the Hall sensor in real time. By implementing the embodiment of the utility model, the current of the alternating current power supply can be monitored in real time.
Description
Technical Field
The utility model relates to the technical field of electronic circuits, in particular to an alternating current sampling circuit of a Hall sensor.
Background
With the development of the times, the requirements of people on power supply of electronic equipment are continuously improved, various alternating current power supplies gradually appear, but the method for judging whether the output of the traditional alternating current power supply is normal is simple, usually, an indicator lamp is connected to a power supply output end in parallel, and relevant judgment is carried out through on-off of the indicator lamp.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides an alternating current sampling circuit based on a Hall sensor, which can monitor the magnitude of alternating current power supply current in real time.
An embodiment of the present invention provides an ac current sampling circuit based on a hall sensor, including: the Hall sensor circuit, the direct current power supply and the control unit;
the hall sensor circuit includes: a Hall sensor; the current input end of the Hall sensor is connected with an external alternating current power supply, the current output end of the Hall sensor is connected with external electric equipment, the sampling signal output end of the Hall sensor is connected with the current sampling control unit, the power supply end of the Hall sensor is connected with the direct current power supply, and the grounding end of the Hall sensor is grounded;
and the control unit is used for calculating the real-time current value of the external alternating current power supply according to the sampling signal transmitted by the Hall sensor in real time.
Further, the hall sensor circuit further includes: a first capacitor; the first end of the first capacitor is connected with a power supply end of the Hall sensor, and the second end of the first capacitor is connected with a grounding end of the Hall sensor.
Further, the alternating current sampling circuit based on the Hall sensor also comprises a filter circuit; the Hall sensor circuit is connected with the control unit through the filter circuit.
Further, the filter circuit includes: a first resistor, a second resistor and a second capacitor;
the first end of the first resistor is connected with the sampling signal output end of the Hall sensor, and the second end of the first resistor is connected with the signal input end of the control unit;
the first end of the second resistor is connected with the grounding end of the Hall sensor, and the second end of the second resistor is connected with the second end of the first resistor;
and the first end of the second capacitor is connected with the second end of the first resistor, and the second end of the second capacitor is connected with one end of the second resistor.
Further, the control unit is a single chip microcomputer.
The embodiment of the utility model has the following beneficial effects:
the embodiment of the utility model provides an alternating current sampling circuit based on a Hall sensor, which comprises a Hall sensor circuit, a direct current power supply and a control unit, wherein the Hall sensor circuit comprises a Hall sensor circuit, a direct current power supply and a control unit; the Hall sensor circuit is internally provided with a Hall sensor, collects the power supply current of an external alternating current power supply in real time through the Hall sensor, then generates a corresponding voltage signal, and transmits the real-time voltage signal into the control unit, and the control unit calculates the real-time current value after performing AD conversion on the collected voltage signal, thereby realizing the monitoring of the real-time current of the external alternating current power supply.
Drawings
Fig. 1 is a schematic structural diagram of an ac current sampling circuit based on a hall sensor according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a hall sensor circuit according to an embodiment of the present invention.
Fig. 3 is another schematic structural diagram of a schematic structural diagram of an ac current sampling circuit based on a hall sensor according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a filter circuit according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2: the embodiment of the utility model provides an alternating current sampling circuit based on a Hall sensor, which comprises a Hall sensor circuit, a direct current power supply and a control unit, wherein the Hall sensor circuit comprises a Hall sensor circuit, a direct current power supply and a control unit;
the hall sensor circuit includes: a Hall sensor; a current input end (I + end shown in fig. 2) of the hall sensor is connected with an external alternating current power supply (Lin shown in fig. 2 is a current output end of the external alternating current power supply), a current output end (I + end shown in fig. 2) of the hall sensor is connected with an external electric device (Lout shown in fig. 2 is a current output end of the external electric device), a sampling signal output end (VOUT end shown in fig. 2) of the hall sensor is connected with the current sampling control unit, a power supply end (VCC end shown in fig. 2) of the hall sensor is connected with the direct current power supply (VCC end outside the hall sensor shown in fig. 2), and a grounding end of the hall sensor is grounded;
and the control unit is used for calculating the real-time current value of the external alternating current power supply according to the sampling signal transmitted by the Hall sensor in real time.
In this embodiment, a hall sensor is disposed in the hall sensor circuit, the hall sensor circuit collects the magnitude of the supply current of the external ac power supply in real time through the hall sensor, then generates a corresponding voltage signal, and transmits the real-time voltage signal into the control unit, and then the control unit calculates the real-time current value after performing AD conversion on the collected voltage signal, thereby realizing the monitoring of the magnitude of the real-time current of the external ac power supply. Preferably, the control unit is a single chip microcomputer, the single chip microcomputer performs AD conversion after receiving the voltage signal transmitted by the hall sensor, and then calculates a current value corresponding to a voltage value in the voltage signal, thereby implementing monitoring of a current value of a real-time power supply current of an external ac power supply.
In a preferred embodiment, the hall sensor circuit further comprises: a first capacitance C1; the first end of the first capacitor C1 is connected with the power supply end of the hall sensor, and the second end of the first capacitor C1 is connected with the ground end of the hall sensor. The supply voltage of the dc power supply is filtered by the provision of the first capacitor C1.
In a preferred embodiment, as shown in fig. 3, the hall sensor based ac current sampling circuit further comprises a filter circuit; the Hall sensor circuit is connected with the control unit through the filter circuit. And a filter circuit is arranged to filter the voltage signal output by the Hall sensor.
In a preferred embodiment, as shown in fig. 4, the filter circuit comprises: a first resistor R1, a second resistor R2 and a second capacitor C2;
a first end of the first resistor R1 is connected to a sampling signal output end of the hall sensor, and a second end of the first resistor R1 is connected to a signal input end of the control unit (Vad shown in fig. 4 is a signal input end of the control unit);
a first end of the second resistor R2 is connected to the ground terminal of the hall sensor, and a second end of the second resistor R2 is connected to a second end of the first resistor R1;
the first end of the second capacitor C2 is connected to the second end of the first resistor R1, and the second end of the second capacitor C2 is connected to one end of the second resistor R2.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model.
Claims (5)
1. An alternating current sampling circuit based on a Hall sensor, comprising: the Hall sensor circuit, the direct current power supply and the control unit;
the hall sensor circuit includes: a Hall sensor; the current input end of the Hall sensor is connected with an external alternating current power supply, the current output end of the Hall sensor is connected with external electric equipment, the sampling signal output end of the Hall sensor is connected with the current sampling control unit, the power supply end of the Hall sensor is connected with the direct current power supply, and the grounding end of the Hall sensor is grounded;
and the control unit is used for calculating the real-time current value of the external alternating current power supply according to the sampling signal transmitted by the Hall sensor in real time.
2. The hall sensor based ac current sampling circuit of claim 1 wherein the hall sensor circuit further comprises: a first capacitor; the first end of the first capacitor is connected with a power supply end of the Hall sensor, and the second end of the first capacitor is connected with a grounding end of the Hall sensor.
3. The hall sensor based ac current sampling circuit of claim 2 further comprising a filter circuit; the Hall sensor circuit is connected with the control unit through the filter circuit.
4. The hall sensor based ac current sampling circuit of claim 3 wherein the filtering circuit comprises: a first resistor, a second resistor and a second capacitor;
the first end of the first resistor is connected with the sampling signal output end of the Hall sensor, and the second end of the first resistor is connected with the signal input end of the control unit;
the first end of the second resistor is connected with the grounding end of the Hall sensor, and the second end of the second resistor is connected with the second end of the first resistor;
and the first end of the second capacitor is connected with the second end of the first resistor, and the second end of the second capacitor is connected with one end of the second resistor.
5. The Hall sensor based AC current sampling circuit according to claim 4, wherein said control unit is a single chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121737136.2U CN215813004U (en) | 2021-07-28 | 2021-07-28 | Alternating current sampling circuit based on Hall sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121737136.2U CN215813004U (en) | 2021-07-28 | 2021-07-28 | Alternating current sampling circuit based on Hall sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215813004U true CN215813004U (en) | 2022-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121737136.2U Active CN215813004U (en) | 2021-07-28 | 2021-07-28 | Alternating current sampling circuit based on Hall sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215813004U (en) |
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2021
- 2021-07-28 CN CN202121737136.2U patent/CN215813004U/en active Active
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