CN203967401U - A kind of intelligent power socket based on wireless radio-frequency - Google Patents

Abstract

The utility model discloses an intelligent power socket based on wireless radio frequency technology, comprising: a power socket body; a control circuit connected to the power socket body for conducting or disconnecting several jacks in the power socket body; a wireless radio frequency remote control device , including a radio frequency receiving circuit and a radio frequency transmitting circuit, connected to the radio frequency receiving circuit control circuit, the radio frequency transmitting circuit is used to send the on or off signal to the radio frequency receiving circuit, and the control circuit responds after receiving the on or off signal Perform on-off or disconnection of the corresponding jack in the power socket body; the current detection circuit is connected to the control circuit to detect whether there is current in the jack of the power socket body. The circuit of the power socket is turned on, and when there is no current within a preset time, the control circuit disconnects the corresponding jack in the main body of the power socket.

Description

An intelligent power socket based on radio frequency technology

technical field

The utility model relates to the technical field of electrical components, in particular to an intelligent power socket based on wireless radio frequency technology.

Background technique

As the most basic power supply device in the family, the power socket is distributed in every corner of the room. Regardless of whether it is connected to useful electrical equipment, it is always in a power-on state. For families with infants and young children at home, power sockets are a big hidden danger. A little carelessness can cause life-threatening.

In the existing power sockets, take the extension board as an example, in order to prevent the risk of electric shock when not in use, an on-off switch is usually arranged on the extension board, and all the jacks on the extension board are checked. Unified on-off control, even each jack is set with an on-off switch for separate control. However, although this method can play a protective role to a certain extent, it completely relies on human control, and the on-off needs to be controlled by humans, and once it is forgotten, there are also hidden dangers.

Utility model content

Aiming at the above-mentioned deficiencies in the prior art, the utility model provides an intelligent power socket based on wireless radio frequency technology. The utility model is realized through the following technical solutions:

An intelligent power socket based on radio frequency technology, including:

Power socket body;

The control circuit is connected to the main body of the power socket, and is used to conduct or disconnect several jacks in the main body of the power socket;

The radio frequency remote control device includes a radio frequency receiving circuit and a radio frequency transmitting circuit, which is connected to the radio frequency receiving circuit control circuit, and the radio frequency transmitting circuit is used to send the on or off signal to the radio frequency receiving circuit, and the control circuit receives the on or off signal. After the signal is turned on, correspondingly conduct or disconnect the corresponding jack in the power socket body;

The current detection circuit is connected to the control circuit to detect whether there is current in the jack of the power socket body. In the state of current, the control circuit keeps the circuit in the power socket body turned on, and there is no current state within a preset time Next, the control circuit disconnects the corresponding jack in the main body of the power socket.

Preferably, the current detection circuit includes a current sensor and an operational amplifier, and the current sensor has a built-in linear Hall sensor circuit for outputting a voltage proportional to the detected current and outputting it to the operational amplifier for amplification.

Preferably, the radio frequency transmitting circuit includes an encoding chip for sending out the address code of the jack to be controlled, and the radio frequency receiving circuit decoding chip receives and decodes the address code and transmits it to the control circuit.

Preferably, the control circuit includes a single-chip microcomputer, the single-chip microcomputer is connected to the radio frequency receiving circuit and the current detection circuit, and the single-chip microcomputer is used to detect whether the jack of the power socket body is There is current, and the output on-off signal controls the conduction or disconnection of the corresponding jack.

Preferably, several on-off buttons are also included to manually control the on-off of the jack.

On the one hand, the utility model can judge whether the power socket needs to be automatically powered off according to the current detection circuit; High degree of intelligence, low cost, easy to use.

Description of drawings

What shown in Fig. 1 is the structural representation of the utility model;

What Figure 2 shows is the circuit diagram of the current detection circuit;

What Fig. 3 shows is the circuit diagram of radio frequency transmitting circuit;

What Fig. 4 shows is the circuit diagram of radio frequency receiving circuit;

Figure 5 shows the circuit diagram of the control circuit.

Detailed ways

The following will be combined with the accompanying drawings of the utility model to clearly and completely describe and discuss the technical solutions in the embodiments of the utility model. Obviously, what is described here is only a part of the utility model, not all examples, based on The embodiments of the present utility model and all other embodiments obtained by persons of ordinary skill in the art without making creative efforts all belong to the protection scope of the present utility model.

In order to facilitate the understanding of the embodiments of the present utility model, the following will further explain and illustrate by taking specific embodiments as examples in conjunction with the accompanying drawings, and each embodiment does not constitute a limitation to the embodiments of the present utility model.

As shown in FIG. 1 , the utility model provides a smart power socket based on radio frequency technology, including: a power socket body 1 , a control circuit 2 , a radio frequency remote control device 4 and a current detection circuit 3 . In the utility model, the power socket body 1 can be an existing power socket or a power strip, etc., and there can be one or a plurality of jacks on the power socket body 1, which is not limited in the utility model. The on-off of each jack on the power socket body can be displayed and distinguished by LEDs.

As shown in Figure 2, the current detection circuit 3 is used to detect whether there is current in the jack of the power socket body 1, that is, there will be current in the corresponding jack of the working electrical equipment, and there will be no current after the work stops. The current detection circuit 3 of this embodiment includes a current sensor ACS712 and its operational amplifier LM358. The ACS712 is a linear current sensor with a built-in accurate low-bias linear Hall sensor circuit, which can output a current proportional to the detected AC current. Voltage, using a single 5V power supply, detect the current inflow of the power socket under test through pins 1, 2, 3, and 4, output the current size of the power socket under test through pin 7, and pass through the LM358 single-stage op amp After being amplified, it is output to the control circuit 2.

As shown in Figure 3 and Figure 4, the radio frequency remote control device includes two parts: the radio frequency receiving circuit and the radio frequency transmitting circuit, mainly composed of a 315MHz frequency band crystal oscillator, an LM358 operational amplifier, and its radio frequency encoding chip PT2262 and decoding chip PT2272 . The encoding chip PT2262 sends the address code through the address pins 1, 3, 4, 5, and inputs the remote control button through the data pins 10 and 11. After the decoding chip PT2272 receives the signal, its address code is compared and checked twice, and the PT2272’s The VT pin only outputs high level, and 315IN1 and 315IN2 on the 10 and 11 data pins of PT2272 can output high level. The outputs 315IN1 and 315IN2 are input to the control circuit through serial communication.

In order to reduce the cost, the 315MHz radio frequency transmitting circuit of the utility model adopts a 315MHz crystal oscillator and a double operational amplifier circuit LM358. When working specifically, when the button of the remote control is pressed, PT2262 is energized to work, and its 17th pin outputs a modulated serial data signal for 315s. When the 315s output is high level, the 315MHz wireless radio frequency transmission circuit starts to vibrate and transmit, etc. When the 315s output is low level, the 315MHz radio frequency transmission circuit stops oscillating, so the radio frequency transmission circuit is completely controlled by the digital signal output by the 17/315s pin of PT2262, thus completing the amplitude of the radio frequency transmission circuit Keying, that is, ASK modulation is adopted, and the modulation degree is 100%. The antenna is a common coil antenna with a length of 10 cm, which can be erected during long-distance transmission, and the remote control distance can reach more than 5 meters in the case of obstacles.

As shown in Figure 5, the control circuit is connected to the main body of the power socket, including a STC11F02 single-chip microcomputer. As the core chip, STC11F02 supports ISP (programmable in the system). In this utility model, the USB interface (S6 in the figure) is used to connect with the computer, and the user can download directly through the serial port (RxD/P3.0, TxD/P3.1). The program can be completed in a few seconds, and the manually controlled on-off buttons S7 and S8 are connected to /INT0 and /INT1 of STC11F02 as external interrupts. The current detection circuit inputs the detected current signal A IN to the P1.2 port of the STC11F02 microcontroller, and the radio frequency inputs the output switching signals 315IN1 and 315IN2 to the P1.0 and P1.0 ports of the STC11F02 microcontroller, and the STC11F02 microcontroller passes through the P3.7 port Output the signal OUT1 to control the on-off of the power socket, and trigger the on-off of the control power socket through the relay.

The single-chip microcomputer STC11F02 is the control core of the whole system. According to the current detected by the current detection circuit, in the state of current, the control circuit keeps the circuit in the power socket body on, and in the state of no current within 30s, the control circuit is disconnected. Corresponding jack in the power socket body. And, receiving the conduction or disconnection signal sent by the wireless radio frequency transmitting circuit, and directly controlling the conduction or disconnection of the corresponding jack in the main body of the power socket.

The utility model can control its on-off from three aspects at the same time. The first aspect can control the on-off of the power socket through the wireless radio frequency remote control technology, and the on-off of the power socket can be controlled by sending signals through the wireless remote control button; the second aspect can be through real-time detection. Control the current usage in the socket, control the on-off of the power socket, when the current sensor detects that the socket of the power socket is in use, the power socket can be connected, when the current sensor detects that the socket of the power socket has no current, it will automatically Cut off the power socket; the third aspect can manually control the power on and off of a jack through the manual button of the power socket, which can be controlled for the jacks needed in the power socket.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, and any person familiar with the technical field can easily think of All changes or replacements should fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (4)

1. the intelligent power socket based on wireless radio-frequency, is characterized in that, comprising:

Supply socket body;

Control circuit, connects described supply socket body, in order to conducting or disconnect the intrinsic some jacks of described supply socket;

Wireless radio frequency remote control device, comprise less radio-frequency receiving circuit and less radio-frequency radiating circuit, control circuit described in described connection less radio-frequency receiving circuit, described less radio-frequency radiating circuit is in order to send conducting or cut-off signal to described less radio-frequency receiving circuit, and after described control circuit receives described conducting or cut-off signal, correspondence is carried out conducting or disconnects the intrinsic corresponding jack of described supply socket;

Current detection circuit, connect described control circuit, whether there is electric current in order to the jack that detects described supply socket body, under the state that has electric current, described control circuit keeps the intrinsic circuit turn-on of described supply socket, in a Preset Time, do not have under the state of electric current, described control circuit disconnects the intrinsic corresponding jack of described supply socket;

Described current detection circuit comprises current sensor and operational amplifier, and described current sensor built-in linear Hall element circuit in order to output voltage proportional to the electric current detecting, and exports described operational amplifier to and amplifies.

2. the intelligent power socket based on wireless radio-frequency according to claim 1, it is characterized in that, described less radio-frequency radiating circuit comprises coding chip, in order to send the address code of jack of required control, described less radio-frequency receiving circuit decoding chip, receives described address code and decodes and transfer to described control circuit.

3. the intelligent power socket based on wireless radio-frequency according to claim 1, it is characterized in that, described control circuit comprise a single-chip microcomputer with, described single-chip microcomputer connects described less radio-frequency receiving circuit and described current detection circuit, described conducting or the cut-off signal of described single-chip microcomputer in order to send according to described wireless radio frequency remote control device, or whether the jack that described current detection circuit detects described supply socket body has electric current, conducting or the disconnection of the corresponding jack of output make-and-break signal control.

4. the intelligent power socket based on wireless radio-frequency according to claim 1, is characterized in that, also comprises some break-make buttons, in order to the break-make of Artificial Control jack.