CN212134802U

CN212134802U - Safe power output zero, live wire to ground alarm circuit

Info

Publication number: CN212134802U
Application number: CN202020606649.9U
Authority: CN
Inventors: 邓德均; 熊洪清; 郑晓辉; 阮正潮
Original assignee: Zhengdong Xiamen Electric Power Safety Technology Co ltd
Current assignee: Zhengdong Xiamen Electric Power Safety Technology Co ltd
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2020-12-11
Anticipated expiration: 2030-04-21

Abstract

The utility model provides a safe power output zero, live wire ground alarm circuit, including live wire end, zero line end, be used for reducing the first transformer of live wire end voltage, be used for gathering the first voltage acquisition module of live wire terminal voltage, be used for reducing the second transformer of zero line terminal voltage, be used for gathering the second voltage acquisition module of live wire terminal voltage, microprocessor and the alarm module who is used for reporting to the police; the fire wire end, the first transformer, the first voltage acquisition module, the microprocessor and the alarm module are sequentially connected; the zero line end, the second transformer, the second voltage acquisition module, the microprocessor and the alarm module are connected in sequence. The utility model provides a zero, live wire of safety power supply output alarm circuit to ground reduces the voltage of zero, live wire end through first transformer and second transformer to gather the voltage value after stepping down through first voltage acquisition module and second voltage acquisition module, when the generating circuit is unusual, realize alarming function through microprocessor and alarm module.

Description

Safe power output zero, live wire to ground alarm circuit

Technical Field

The utility model relates to a power supply circuit technical field, in particular to zero, live wire of safety power supply output alarm circuit to ground.

Background

With the continuous development of electric power industry, electric power becomes the most important energy source in people's production and life, and non-renewable resources such as petroleum are likely to be replaced in the future, so that electric power equipment becomes an essential part in life and production.

The power supply circuit in the power equipment is used for providing required energy for the power equipment, and plays an important role in a power utilization system. Most power supply circuits on the market generally do not have power supply safety solutions, and people cannot be reminded of the abnormity of the power supply circuits in time, so that various safety accidents are caused. Still few power supplies have power supply safety solution, for example, patent application No. CN201811291257.1 discloses a power supply to ground ESD protection unit and a dual-power supply broadband linear voltage regulator protection structure, and a power supply to ground electrostatic protection unit is constructed by using the characteristics of a bipolar transistor BE junction, RC delay, and darlington NPN transistor, and a dual-power supply broadband bipolar linear voltage regulator full-chip electrostatic protection network is constructed by using the characteristics of the electrostatic protection unit and the bipolar transistor BE, but such power supply circuits are complex and have poor effects.

In summary, the existing power circuit has the problems of complex circuit and no power safety solution.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems that the existing power circuit is complex and does not have a power safety solution, the utility model provides a safety power output zero and live wire ground alarm circuit, which comprises a live wire end, a zero line end, a first transformer for reducing the voltage of the live wire end, a first voltage acquisition module for acquiring the voltage of the live wire end, a second transformer for reducing the voltage of the zero line end, a second voltage acquisition module for acquiring the voltage of the live wire end, a microprocessor and an alarm module for alarming;

the fire wire end, the first transformer, the first voltage acquisition module, the microprocessor and the alarm module are sequentially connected; the zero line end, the second transformer, the second voltage acquisition module, the microprocessor and the alarm module are connected in sequence.

Further, the first transformer adopts a voltage transformer.

Further, the first voltage acquisition module comprises a half-wave rectification module, an operational amplifier and an acquisition module; the half-wave rectification module, the operational amplifier and the acquisition module are electrically connected.

Further, the second transformer adopts a voltage transformer.

Further, the second voltage acquisition module comprises a half-wave rectification module, an operational amplifier and an acquisition module; the half-wave rectification module, the operational amplifier and the acquisition module are electrically connected.

Further, the half-wave rectification module comprises a diode D1 and a diode D2; the diode D1 is connected with the voltage transformer; the diode D2 is connected to ground.

Further, the model of the microprocessor is MM32F030c8t 6.

Furthermore, the alarm module adopts an alarm lamp.

Furthermore, the alarm module adopts a loudspeaker.

Further, the alarm module adopts a buzzer.

The utility model provides a zero, live wire of safety power supply output alarm circuit to ground reduces the voltage of zero, live wire end through first transformer and second transformer to gather the magnitude of voltage after the step-down through first voltage acquisition module and second voltage acquisition module, when the generating circuit is unusual, realize alarming function through microprocessor and alarm module, thereby in time remind people, prevent to cause bigger accident because of the power is unusual.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a circuit block diagram of a safety power supply output zero and live wire ground alarm circuit provided by the present invention;

fig. 2 is a circuit diagram of a safety power supply output zero and live wire ground alarm circuit.

Reference numerals:

10 live wire end 20 first transformer 30 first voltage acquisition module

40 zero line end 50 second transformer 60 second voltage acquisition module

70 microprocessor 80 alarm module

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The utility model provides a safe power supply outputs zero, live wire to ground warning circuit now, including live wire end 10, zero line end 40, be used for reducing the first transformer 20 of live wire end 10 voltage, be used for gathering the first voltage acquisition module 30 of live wire end 10 voltage, be used for reducing the second transformer 50 of zero line end 40 voltage, be used for gathering the second voltage acquisition module 60 of live wire end 10 voltage, microprocessor 70 and be used for the alarm module 80 who reports to the police;

the live wire end 10, the first transformer 20, the first voltage acquisition module 30, the microprocessor 70 and the alarm module 80 are connected in sequence; the zero line end 40, the second transformer 50, the second voltage acquisition module 60, the microprocessor 70 and the alarm module 80 are connected in sequence.

In specific implementation, as shown in fig. 1 and fig. 2, the full power output zero and live wire ground alarm circuit provided in the embodiment of the present invention includes a live wire end 10, a zero wire end 40, a first transformer 20, a first voltage acquisition module 30, a second transformer 50, a second voltage acquisition module 60, a microprocessor 70, and an alarm module 80; the live wire end 10, the first transformer 20, the first voltage acquisition module 30, the microprocessor 70 and the alarm module 80 are electrically connected in sequence; the first transformer 20 is used for reducing the voltage of the live wire end 10; the first voltage acquisition module 30 is used for acquiring a voltage value reduced by the first transformer 20, transmitting an acquired voltage value signal to the microprocessor 70, judging by the microprocessor 70, and driving the alarm module 80 to alarm if the voltage value is abnormal; the zero line end 40, the second transformer 50, the second voltage acquisition module 60, the microprocessor 70 and the alarm module 80 are electrically connected in sequence; the second transformer 50 is used for reducing the voltage of the zero line end 40; the second voltage collecting module 60 is configured to collect a voltage value reduced by the second transformer 50, transmit a collected voltage value signal to the microprocessor 70, and determine, by the microprocessor 70, if the voltage value is abnormal, drive the alarm module 80 to alarm. Preferably, the first transformer 20 and the second transformer in this embodiment use voltage transformers.

In actual use, as shown in fig. 1 and 2, the voltage between the live wire end 10 and the neutral wire end 40 is divided by the resistor R1 and the resistor R2 and is 110 volts, and after the voltage is reduced by the first transformer 20 and the second transformer 50, the voltage values detected by the first voltage acquisition module 30 and the second voltage acquisition module 60 are both 2.5 volts, and at this time, the microprocessor 70 does not process the voltage values; when the zero line is grounded, the voltage value detected by the first voltage acquisition module 30 is 5 volts, the voltage value detected by the second voltage acquisition module 60 is 0 volts, and at this time, the microprocessor 70 drives the alarm module 80 to alarm; when the fire wire is grounded, the voltage value detected by the first voltage acquisition module 30 is 0 v, the voltage value detected by the second voltage acquisition module 60 is 5 v, and the microprocessor 70 drives the alarm module 80 to alarm.

Preferably, the first voltage acquisition module 30 includes a half-wave rectification module, an operational amplifier and an acquisition module; the half-wave rectification module, the operational amplifier and the acquisition module are electrically connected.

Preferably, the second voltage collecting module 60 includes a half-wave rectification module, an operational amplifier and a collecting module; the half-wave rectification module, the operational amplifier and the acquisition module are electrically connected.

Preferably, the half-wave rectification module comprises a diode D1 and a diode D2; the diode D1 is connected with the voltage transformer; the diode D2 is connected to ground.

In specific implementation, as shown in fig. 2, the first voltage collecting module 30 includes a half-wave rectification module, an operational amplifier and a collecting module; the half-wave rectification module, the operational amplifier and the acquisition module are electrically connected; the half-wave rectification module specifically comprises a diode D1 and a diode D2, and the diode D2 is connected to the ground line; rectification is performed through the unidirectional conduction characteristics of the diode D1 and the diode D2; the operational amplifier is used for amplifying the signal value of the circuit; the acquisition module is used for acquiring the tiny current in the circuit. The second voltage acquisition module 60 also includes a half-wave rectification module, an operational amplifier, and an acquisition module; the half-wave rectification module, the operational amplifier and the acquisition module are electrically connected; the half-wave rectification module specifically comprises a diode D1 and a diode D2, and the diode D2 is connected to the ground line; rectification is performed through the unidirectional conduction characteristics of the diode D1 and the diode D2; the operational amplifier is used for amplifying the signal value of the circuit; the acquisition module is used for acquiring the tiny current in the circuit.

Preferably, the microprocessor 70 is of the model MM32F030c8t 6.

In specific implementation, the microprocessor 70 in the embodiment of the present invention is a chip with a model number of MM32F030c8t 6.

Preferably, the alarm module 80 adopts an alarm lamp.

Preferably, the alarm module 80 employs a horn.

Preferably, the alarm module 80 employs a buzzer.

When the concrete implementation, according to the in-service use requirement, the embodiment of the utility model provides an alarm module 80 can adopt any kind or multiple combination in alarm lamp, loudspeaker or the buzzer to constitute.

Although terms such as line end, neutral end, first transformer, first voltage acquisition module, second transformer, second voltage acquisition module, microprocessor, alarm module, half-wave rectification module, operational amplifier and acquisition module are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

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 the same; 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 or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A kind of safe power exports zero, live wire to the ground alarm circuit, characterized by that: the intelligent fire wire alarm system comprises a fire wire end (10), a zero line end (40), a first transformer (20) for reducing the voltage of the fire wire end (10), a first voltage acquisition module (30) for acquiring the voltage of the fire wire end (10), a second transformer (50) for reducing the voltage of the zero line end (40), a second voltage acquisition module (60) for acquiring the voltage of the fire wire end (10), a microprocessor (70) and an alarm module (80) for alarming;

the fire wire end (10), the first transformer (20), the first voltage acquisition module (30), the microprocessor (70) and the alarm module (80) are sequentially connected; the zero line end (40), the second transformer (50), the second voltage acquisition module (60), the microprocessor (70) and the alarm module (80) are connected in sequence.

2. The safety power supply output zero, live wire to ground alarm circuit of claim 1, wherein: the first transformer (20) adopts a voltage transformer.

3. The safety power supply output zero, live wire to ground alarm circuit of claim 2, wherein: the first voltage acquisition module (30) comprises a half-wave rectification module, an operational amplifier and an acquisition module; the half-wave rectification module, the operational amplifier and the acquisition module are electrically connected.

4. The safety power supply output zero, live wire to ground alarm circuit of claim 1, wherein: the second transformer (50) adopts a voltage transformer.

5. The safety power supply output zero, live wire to ground alarm circuit of claim 4, wherein: the second voltage acquisition module (60) comprises a half-wave rectification module, an operational amplifier and an acquisition module; the half-wave rectification module, the operational amplifier and the acquisition module are electrically connected.

6. The safety power supply output zero, live wire to ground alarm circuit of claim 5, wherein: the half-wave rectification module comprises a diode D1 and a diode D2; the diode D1 is connected with the voltage transformer; the diode D2 is connected to ground.

7. The safety power supply output zero, live wire to ground alarm circuit of any one of claims 1-6, wherein: the microprocessor (70) is of the type MM32F030c8t 6.

8. The safety power supply output zero, live wire to ground alarm circuit of claim 7, wherein: the alarm module (80) adopts an alarm lamp.

9. The safety power supply output zero, live wire to ground alarm circuit of claim 7, wherein: the alarm module (80) adopts a loudspeaker.

10. The safety power supply output zero, live wire to ground alarm circuit of claim 7, wherein: the alarm module (80) adopts a buzzer.