CN220795443U - Non-contact alternating voltage detection device - Google Patents
Non-contact alternating voltage detection device Download PDFInfo
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- CN220795443U CN220795443U CN202322241364.6U CN202322241364U CN220795443U CN 220795443 U CN220795443 U CN 220795443U CN 202322241364 U CN202322241364 U CN 202322241364U CN 220795443 U CN220795443 U CN 220795443U
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Abstract
The utility model belongs to the technical field of voltage detection, and particularly relates to a non-contact alternating-current voltage detection device, which comprises: the micro control unit is provided with a first acquisition end, a second acquisition end and a third acquisition end; the LED detection module is coupled with the first acquisition end; the buzzer detection module is coupled with the second acquisition end; the antenna detection module is coupled with the first acquisition end; and the power supply module is coupled with the micro control unit. The non-contact alternating current voltage detection device can detect whether the LED detection module, the buzzer detection module and the antenna detection module can work normally, if the self-detection is not passed, the module has abnormal functions, a user is reminded to repair in time, and the use safety of the user can be ensured.
Description
Technical Field
The application relates to the technical field of non-contact alternating-current voltage detection equipment, in particular to a non-contact alternating-current voltage detection device.
Background
In the related art, after the non-contact ac voltage detection device detects an ac voltage, a user is generally alerted by an audible and visual alarm, if the detection device is used for a period of time, the device is still continuously used by the user due to aging and damage to detect the ac voltage, and the state may not be normally judged, for example, a buzzer that emits an alarm sound cannot sound due to falling, a light emitting diode that emits a flash indication cannot emit light, an induced antenna becomes weak due to oxidation and rust, and the like. When the electric shock detection device is used, the detection device can not effectively detect whether an object is electrified, and then the electric shock risk is increased.
It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art.
Disclosure of utility model
In view of at least one of the above technical problems, the present application provides a non-contact ac voltage detection device, which solves the problem that the detection device cannot effectively detect whether an object is charged or not, thereby increasing the risk of electric shock.
The embodiment of the application provides a non-contact alternating-current voltage detection device, which comprises:
the micro control unit is provided with a first acquisition end, a second acquisition end and a third acquisition end;
The LED detection module comprises a first detection branch, a second detection branch, a third detection branch, a first acquisition element and a first node, wherein one ends of the first detection branch, the second detection branch and the third detection branch are respectively coupled with the micro control unit, the other ends of the first detection branch, the second detection branch and the third detection branch are mutually coupled and are coupled with a third acquisition end, one end of the first acquisition element is respectively coupled with the first detection branch, the second detection branch and the third detection branch, and the other end of the first acquisition element is grounded;
the buzzer detection module is coupled with the second acquisition end;
the antenna detection module is coupled with the first acquisition end;
And the power supply module is coupled with the micro control unit.
The embodiment of the application has the following technical effects: the non-contact alternating current voltage detection device can detect whether the LED detection module, the buzzer detection module and the antenna detection module can work normally, if the self-detection is not passed, the module has abnormal functions, a user is reminded to repair in time, and the use safety of the user can be ensured.
In some possible implementations, the first detection branch includes a resistor R1 and a diode LED1 connected in series, the resistor R1 being coupled to the micro-control unit, the diode LED1 being coupled to the first collecting element.
In some possible implementations, the second detection branch includes a resistor R2 and a diode LED2 connected in series, the resistor R2 being coupled to the micro-control unit, the diode LED2 being coupled to the first acquisition element.
In some possible implementations, the third detection branch includes a resistor R3 and a diode LED3 connected in series, the resistor R3 being coupled to the micro-control unit, the diode LED3 being coupled to the first acquisition element.
In some possible implementations, the buzzer detection module includes a signal amplifying element, a buzzer, a second collecting element and a first node, wherein a first end of the signal amplifying element is coupled to the micro-control unit, a second end of the signal amplifying element is coupled to the buzzer, a third end of the signal amplifying element is coupled to the first node, the first node is coupled to the micro-control unit, and the second collecting element is coupled to the first node.
In some possible implementations, the first end of the signal amplifying element is coupled to the micro-control unit through a resistor R4.
In some possible implementations, the antenna detection module includes an antenna element, a first voltage dividing element, a second voltage dividing element, a first current limiting element, a second node, and a third node, where the first end and the second end of the antenna element are respectively coupled to the second node and the third node, the first end of the first voltage dividing element is coupled to the micro control unit, the second end of the first voltage dividing element is coupled to the second node, the first end of the second voltage dividing element is coupled to the third node, the second end of the second voltage dividing element is coupled to the micro control unit, the first end of the first current limiting element is coupled to the second node, the second end of the first current limiting element is connected to the first acquisition end, the first end of the second current limiting element is coupled to the third node, and the second end of the second current limiting element is coupled to the micro control unit.
The utility model will be further described with reference to the drawings and examples.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following description will briefly explain the embodiments or the drawings needed in the prior art, and it is obvious that the drawings in the following description are only some embodiments of the present application and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a circuit diagram of a non-contact ac voltage detection device according to an embodiment of the present application;
Detailed Description
In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.
In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the description of the present application, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.
In the related art, after the non-contact ac voltage detection device detects an ac voltage, a user is generally alerted by an audible and visual alarm, if the detection device is used for a period of time, the device is still continuously used by the user due to aging and damage to detect the ac voltage, and the state may not be normally judged, for example, a buzzer that emits an alarm sound cannot sound due to falling, a light emitting diode that emits a flash indication cannot emit light, an induced antenna becomes weak due to oxidation and rust, and the like. When the electric shock detection device is used, the detection device can not effectively detect whether an object is electrified, and then the electric shock risk is increased. The non-contact alternating current voltage detection device can detect whether the LED detection module, the buzzer detection module and the antenna detection module can work normally, if the self-detection is not passed, the module has abnormal functions, a user is reminded to repair in time, and the use safety of the user can be ensured.
Referring to fig. 1, fig. 1 is a circuit diagram of a non-contact ac voltage detection device according to an embodiment of the present application; the embodiment of the application provides a non-contact alternating voltage detection device, which comprises a micro control unit U1, an LED detection module 100, a buzzer detection module 200, an antenna detection module 300 and a power supply module.
The circuit configuration of the non-contact ac voltage detection device will be described in detail below.
The micro control unit U1 is provided with a first acquisition end ADC1, a second acquisition end ADC2 and a third acquisition end ADC3; the LED detection module 100 includes a first detection branch, a second detection branch, a third detection branch, and a first collection element, where one ends of the first detection branch, the second detection branch, and the third detection branch are respectively coupled to the micro control unit U1, the other ends of the first detection branch, the second detection branch, and the third detection branch are mutually coupled and coupled to the third collection end ADC3, and one ends of the first collection element are respectively coupled to the first detection branch, the second detection branch, and the third detection branch, and the other ends of the first collection element are grounded; the buzzer detection module 200 is coupled with the second acquisition end ADC 2; the antenna detection module 300 is coupled with the first acquisition end ADC 1; and the power supply module is coupled with the micro control unit U1.
Before the non-contact ac voltage detection device operates, the LED detection module 100, the buzzer detection module 200, and the antenna detection module 300 are sequentially self-inspected, and if one of the modules is not self-inspected, the non-contact ac voltage detection device needs to be reworked, so that the use safety is ensured. The self-checking process of each module is described below.
When the self-checking of the LED detection module 100 is performed, the micro control unit U1 supplies power to the LED detection module 100, and if the third acquisition end ADC3 of the micro control unit U1 does not acquire the first detection voltage, the LED detection module 100 is opened, and the self-checking fails. If the third acquisition end ADC3 of the micro control unit U1 acquires the first detection voltage, it is determined whether the first detection voltage is consistent with the first reference voltage, and if the first detection voltage is consistent with the first reference voltage, the self-inspection of the LED detection module 100 is completed. In the above process, the first reference voltage is about 0.5V.
More specifically, the LED detection module 100 needs to detect the first detection branch, the second detection branch, and the third detection branch sequentially. For example, after the micro control unit U1 supplies power to the first detection branch, the micro control unit obtains a first detection voltage of the first detection branch, and then determines whether the first detection voltage is consistent with the first reference voltage, so as to complete self-detection of the first detection branch. And then the micro control unit U1 performs self-checking on the second detection branch, and finally performs self-checking on the third detection branch after the self-checking on the second detection branch is completed.
When the buzzer detection module 200 performs self-detection, the micro control unit U1 outputs a PWM signal to the buzzer detection module 200 to drive the buzzer, and obtains a capacitance detection voltage through the second acquisition end ADC 2. If the second detection voltage is close to 0V, the buzzer detection module 200 opens, the self-test fails, and repair processing is required. If the second acquisition end ADC2 of the micro control unit U1 acquires the second detection voltage, it is determined whether the second detection voltage is consistent with the second reference voltage, and if the second detection voltage is consistent with the second reference voltage, the self-checking of the buzzer detection module 200 is completed. In the above process, the second reference voltage is one fifth of the supply voltage. The supply voltage is provided by the supply module.
When the self-checking of the antenna detection module 300 is performed, the micro control unit U1 has a first output terminal OUT1 and a second output terminal OUT2, the micro control unit U1 outputs an output voltage through the first output terminal, outputs a low level through the second output terminal, and simultaneously obtains a third detection voltage through the first acquisition terminal ADC 1. Judging whether the third detection voltage is consistent with the third reference voltage, and completing connection integrity self-check of the antenna detection module 300 under the condition that the third detection voltage is consistent with the third reference voltage; in the above process, the third reference voltage is one half of the output voltage.
In addition, the micro control unit U1 outputs a test voltage through the first output end, simulates the detection of an external induction signal, and completes the signal integrity self-test of the antenna detection module 300 under the condition that the first acquisition end ADC1 reacquires the test voltage.
Referring to fig. 1, in the LED detection module 100, the first collecting element is a resistor R6 for current feedback and collecting voltage.
In some examples, the first detection branch includes a resistor R1 and a diode LED1 connected in series, the resistor R1 being coupled to the micro-control unit U1, the diode LED1 being coupled to the first collecting element.
In this embodiment, the resistor R1 is a current limiting resistor for protecting the diode LED1.
In some examples, the second detection branch includes a resistor R2 and a diode LED2 connected in series, the resistor R2 being coupled to the micro-control unit U1, the diode LED2 being coupled to the first collection element.
In this embodiment, the resistor R2 is a current limiting resistor for protecting the diode LED2.
In some examples, the third detection branch includes a resistor R3 and a diode LED3 connected in series, the resistor R3 being coupled to the micro-control unit U1, the diode LED3 being coupled to the first collection element.
In this embodiment, the resistor R3 is a current limiting resistor for protecting the diode LED3.
In some examples, the buzzer detection module 200 includes a signal amplification element, a buzzer, a second acquisition element, and a first node a, wherein a first end of the signal amplification element is coupled to the micro-control unit U1, a second end of the signal amplification element is coupled to the buzzer, a third end of the signal amplification element is coupled to the first node a, the first node a is coupled to the micro-control unit U1, and the second acquisition element is coupled to the first node a.
Referring to fig. 1, the signal amplifying element is a transistor Q2 for directly driving a load greater than 10 mA. The second acquisition element is a resistor R5 and is used for current feedback and voltage acquisition.
In some examples, the first end of the signal amplifying element is coupled to the micro-control unit U1 through a resistor R4.
In some examples, the antenna detection module 300 includes an antenna element, a first voltage dividing element, a second voltage dividing element, a first current limiting element, a second node b, and a third node c, where the first end and the second end of the antenna element are respectively coupled to the second node b and the third node c, the first end of the first voltage dividing element is coupled to the micro control unit U1, the second end of the first voltage dividing element is coupled to the second node b, the first end of the second voltage dividing element is coupled to the third node c, the second end of the second voltage dividing element is coupled to the micro control unit U1, the first end of the first current limiting element is coupled to the second node b, the second end of the first current limiting element is connected to the first acquisition end ADC1, the first end of the second current limiting element is coupled to the third node c, and the second end of the second current limiting element is coupled to the micro control unit U1.
Referring to fig. 1, the first voltage dividing element is a resistor R11, the second voltage dividing element is a resistor R9, the first current limiting element is a resistor R8, and the second current limiting element is a resistor R7. The first voltage dividing element and the second voltage dividing element are matched to raise the induction signal to one half of the output voltage, so that the full-wave signal of the alternating current signal can be conveniently collected.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above is merely a preferred embodiment of the present application, and is not intended to limit the present application in any way. Any person skilled in the art can make many possible variations and modifications to the technical solution of the present application or modifications to equivalent embodiments using the methods and technical contents disclosed above, without departing from the scope of the technical solution of the present application. Therefore, all equivalent changes according to the shape, structure and principle of the present application are covered in the protection scope of the present application.
Claims (7)
1. A non-contact ac voltage detection device, comprising:
the micro control unit is provided with a first acquisition end, a second acquisition end and a third acquisition end;
The LED detection module comprises a first detection branch, a second detection branch, a third detection branch and a first acquisition element, wherein one ends of the first detection branch, the second detection branch and the third detection branch are respectively coupled with the micro control unit, the other ends of the first detection branch, the second detection branch and the third detection branch are mutually coupled and are coupled with the third acquisition end, one end of the first acquisition element is respectively coupled with the first detection branch, the second detection branch and the third detection branch, and the other end of the first acquisition element is grounded;
the buzzer detection module is coupled with the second acquisition end;
The antenna detection module is coupled with the first acquisition end;
and the power supply module is coupled with the micro control unit.
2. The device according to claim 1, wherein the first detection branch comprises a resistor R1 and a diode LED1 connected in series, the resistor R1 being coupled to the micro-control unit, the diode LED1 being coupled to the first collecting element.
3. The device according to claim 1, wherein the second detection branch comprises a resistor R2 and a diode LED2 connected in series, the resistor R2 being coupled to the micro-control unit, the diode LED2 being coupled to the first collecting element.
4. The device according to claim 1, wherein the third detection branch comprises a resistor R3 and a diode LED3 connected in series, the resistor R3 being coupled to the micro-control unit, the diode LED3 being coupled to the first collecting element.
5. The non-contact ac voltage detection device according to claim 1, wherein the buzzer detection module comprises a signal amplification element, a buzzer, a second acquisition element, and a first node, the first end of the signal amplification element is coupled to the micro-control unit, the second end of the signal amplification element is coupled to the buzzer, the third end of the signal amplification element is coupled to the first node, the first node is coupled to the micro-control unit, and the second acquisition element is coupled to the first node.
6. The device of claim 5, wherein the first end of the signal amplifying element is coupled to the micro-control unit via a resistor R4.
7. The non-contact ac voltage detection device according to claim 1, wherein the antenna detection module comprises an antenna element, a first voltage dividing element, a second voltage dividing element, a first current limiting element, a second node, and a third node, wherein the first end and the second end of the antenna element are respectively coupled to the second node and the third node, the first end of the first voltage dividing element is coupled to the micro control unit, the second end of the first voltage dividing element is coupled to the second node, the first end of the second voltage dividing element is coupled to the third node, the second end of the second voltage dividing element is coupled to the micro control unit, the first end of the first current limiting element is coupled to the second node, the second end of the first current limiting element is connected to the first collecting end, the first end of the second current limiting element is coupled to the third node, and the second end of the second current limiting element is coupled to the micro control unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202322241364.6U CN220795443U (en) | 2023-08-18 | 2023-08-18 | Non-contact alternating voltage detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202322241364.6U CN220795443U (en) | 2023-08-18 | 2023-08-18 | Non-contact alternating voltage detection device |
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| CN220795443U true CN220795443U (en) | 2024-04-16 |
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| CN202322241364.6U Active CN220795443U (en) | 2023-08-18 | 2023-08-18 | Non-contact alternating voltage detection device |
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