CN201956656U - Intellectual earth leakage protection apparatus - Google Patents

Abstract

An intelligent leakage protection device. The utility model mainly solves the problem that the action of the existing household electric leakage protection device is not accurate enough and the user cannot be notified in time. It is characterized in that: it includes an environment detection module, an electric leakage detection module, a central processing module and a control module, and the environment detection module and the electric leakage detection module respectively output the detected humidity signal and current signal to the signal input end of the central processing module; the central processing module Under the control of the built-in program, the collected current digital signal value is compared with the corresponding preset value in the processor. When the detected value is greater than the preset current threshold, the central processing module sends a signal to the control module to cut the main The control signal of the loop power supply; when the humidity value detected by the central processing module is greater than the preset humidity threshold, the central processing module sends a control signal for adjusting the current threshold. This kind of intelligent electric leakage protector acts accurately, can notify the user in time, and realizes the intellectualization of electric leakage protection.

Description

Intelligent Leakage Protector

technical field

The utility model relates to a leakage protection device, in particular to an intelligent digital leakage protection device.

Background technique

With the entry of a wide variety of household appliances into people's daily life, various household leakage protectors will appear thereupon. However, after a long period of application, it is found that these existing household leakage protectors have the following technical problems: First, these household leakage protectors are mostly simple analog circuits with a large number of components, low reliability, and frequent errors. tripping phenomenon; secondly, the existing leakage protector can only be cut off on the spot, but cannot communicate the leakage phenomenon to the user in time, which delays the time for the user to deal with the leakage accident. In addition, the current operating value of these household leakage protectors is fixed and cannot be adjusted with changes in the environment, so that the leakage protectors often malfunction or fail to operate.

Contents of the invention

In order to solve the problems existing in the prior art proposed by the background technology, the utility model provides an intelligent leakage protection device, which operates accurately and can send leakage information to users in time, realizing the protection of leakage Intelligent, with strong practicality.

The technical solution of the utility model is: the intelligent leakage protection device includes a central processing module, a keyboard module, a display module and a power supply module; in addition, the intelligent leakage protection device also includes an environment detection module, a leakage detection module and a control module, The environment detection module and the leakage detection module output the detected humidity signal and the current signal to the signal input terminal of the central processing module respectively; The corresponding preset value in the processor is compared, and when the detected value is greater than the current threshold given in advance, the central processing module sends a control signal to the control module to cut off the main loop power supply; at the same time, the central processing module is Under the control of the built-in program, the collected humidity digital signal value is compared with the corresponding preset value in the processor. When the detected humidity value is greater than the preset humidity threshold, the central processing module sends out an adjustment Control signal for the current threshold.

In order to make the user understand the leakage situation in time, the intelligent leakage protection device also includes a GPRS module with a built-in SIM card, and the central processing module outputs a control signal for controlling the activation of the SIM card to the GPRS module.

The utility model has the following beneficial effects: after the device is connected to the monitored single-phase power grid through the current transformer, when the current value detected by the leakage detection module is greater than the preset threshold value, the central processing module sends a control signal to the control module Cut off the power supply, and send this situation to the preset mobile phone through the GPRS module to prompt the user to deal with the leakage situation in time, so as to achieve real-time monitoring of whether there is a leakage situation. At the same time, in order to ensure the accuracy of leakage detection, the device is also equipped with an environment detection module. The circuit senses the change of the environment through the temperature and humidity sensor, and sends the temperature and humidity value of the environment to the central processing module to display the value through the display module. At the same time, the central processing The module automatically adjusts the trigger current of the protector according to the change of indoor humidity. When the humidity is high, the trigger current value is reduced to avoid danger. When the humidity is low, the trigger current value is moderately increased to reduce misoperation. The device realizes the intellectualization of leakage protection, improves the reliability and safety of protection, and has strong practicability.

Description of drawings

Fig. 1 is a composition principle block diagram of the utility model.

Fig. 2 is an electrical schematic diagram of the leakage detection and environment detection module in the utility model.

Fig. 3 is the electrical schematic diagram of display and GPRS module in the utility model.

Fig. 4 is the electrical principle diagram of the control module in the utility model.

Fig. 5 is an electrical schematic diagram of the central processing module in the present invention.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figure 1, this kind of intelligent leakage protection device includes conventional components such as a central processing module, a keyboard module, a display module, and a power supply module. In addition, the intelligent leakage protection device also includes an environment detection module, a leakage detection module and a control module , the environment detection module and leakage detection module output the detected humidity signal and current signal to the signal input terminal of the central processing module respectively; Compared with the corresponding preset value in the processor, when the detected value is greater than the preset current threshold, the central processing module sends a control signal to the control module to cut off the main loop power supply; at the same time, the central processing module Under the control of the built-in program, the collected humidity digital signal value is compared with the corresponding preset value in the processor. When the detected humidity value is greater than the preset humidity threshold, the central processing module sends out an adjustment control signal for the current threshold.

In addition, in order to directly transmit the leakage situation to the user, the intelligent leakage protection device also includes a GPRS module with a built-in SIM card, and the central processing module outputs a control signal for controlling the activation of the SIM card to the GPRS module.

Below, a specific embodiment of the present utility model is given: as shown in Figure 2 to Figure 5, it is a scheme obtained by carrying out specific implementation according to the scheme listed above. In the monitored single-phase power grid, the transformer U1 is connected, and the output terminal of the transformer is rectified and amplified, and sent to the A/D converter of the central processing module U4, which is converted into a digital signal by the A/D converter; the central The processing module U4 compares the collected digital signal value with the preset value in the processor. When the detected value is greater than the preset current threshold, the central processing module sends a control signal to the control module U12 to cut off the power supply, and at the same time the This situation is sent to the preset mobile phone through the GPRS module U8 to prompt the user to deal with the leakage situation in time, thereby achieving real-time monitoring of whether there is a leakage situation. The temperature and humidity sensor U3 in the environment detection module can sense the change of the environment, and send the temperature and humidity value of the environment to the central processing module to display the value through the display module U11, and the central processing module automatically adjusts the trigger current of the protector according to the change of indoor humidity , When the humidity is high, reduce the trigger current value to avoid danger; when the humidity is low, increase the trigger current value appropriately to reduce misoperation.

To sum up, this kind of detector uses digital circuits to detect leakage at high speed, through high-precision leakage current detection, and accurate measurement of indoor air humidity, and quickly calculates the trigger current through the processor to maximize the leakage while ensuring safety. Reliability of the protector and timely transmission of leakage information to users. The present invention realizes intelligentization of leakage protection, improves reliability and safety of protection, and has strong practicability.

Claims (2)

1. An intelligent leakage protection device, comprising a central processing module, a keyboard module, a display module and a power module, is characterized in that: the intelligent leakage protection device also includes an environment detection module, a leakage detection module and a control module, and the environment detection Module and leakage detection module output the detected humidity signal and current signal to the signal input end of the central processing module respectively; The central processing module is under the control of the built-in program, and the current digital signal value collected is compared with the value in the processor Corresponding preset values are compared, and when the detected value is greater than the preset current threshold, the central processing module sends a control signal to the control module to cut off the main loop power supply; at the same time, the central processing module is controlled by the built-in program Next, compare the collected humidity digital signal value with the corresponding preset value in the processor, and when the detected humidity value is greater than the preset humidity threshold, the central processing module issues a control to adjust the current threshold Signal. 2. The intelligent leakage protection device according to claim 1, characterized in that: the intelligent leakage protection device also includes a GPRS module with a built-in SIM card, and the central processing module outputs the control signal to start the SIM card to the GPRS module. control signal.

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