CN106025724B - Set top box smart jack - Google Patents

Abstract

The invention discloses an intelligent socket for a set-top box, which relates to the field of electrical appliances. It includes a main socket and a secondary socket, and an electric control switch is arranged in the power supply circuit of the secondary socket; The DC output circuit of the rectifier is connected in series with a bidirectional thyristor and a power-taking diode connected in series by multiple crystal diodes, and a trigger control switch is connected between the two anodes of the bidirectional thyristor; the sampling input circuit of the comparator is connected to the power-taking On the diode; an input terminal of a delayer is connected to the power-taking diode, and an output terminal of the delayer is connected to the sampling input circuit. The invention can solve the problem of turning off the switches of the TV and other electrical appliances one by one after watching the TV, so as to avoid the power part of the TV and other related circuits still in the live working state, resulting in power consumption in standby mode, and not being able to turn off other devices in order to keep WiFi. The problem of energy waste due to power supply.

Description

Set-top box smart socket

technical field

The invention relates to the technical field of electrical appliances, in particular to a socket for connecting a TV set-top box.

Background technique

At present, the power consumption of household appliances accounts for a relatively large proportion of the daily power consumption of residents. During the use of home appliances, in addition to the normal consumption of power, there are other unnecessary power Electrical appliances are not truly disconnected from the power supply, such as unplugged from the socket, as small as routers and modems for Internet access, and their power consumption when they are in standby is about 3-5W. The most common thing is that in real life, people often just turn off the TV by remote control after watching TV, but the TV still has standby power consumption, and they need to go to the front and turn it off one by one, otherwise it will just make the TV enter the standby state, and the power part And other related circuits are still in the live working state, resulting in power consumption when not watching TV, resulting in energy waste. On the other hand, many set-top boxes are now equipped with WiFi with low power consumption. People want to surf the Internet at any time. In order to save electricity, the power switches of each electrical appliance must be turned off one by one, which is very troublesome, and sometimes there is a problem that the power of other electrical appliances cannot be turned off in order to preserve WiFi, resulting in energy waste.

Contents of the invention

The technical problem to be solved by the present invention is to provide a set-top box intelligent socket, which can solve the problem that in real life, people need to go to the front and connect the switch of the TV to the Turn off the switches of other related electrical appliances one by one, so as to avoid the power supply part of the TV and other related circuits still being in a charged standby state, resulting in power consumption when not watching TV, and not turning off other power supplies in order to preserve WiFi And cause the problem of energy waste.

In order to solve the above problems, the technical solution of the present invention is: the set-top box intelligent socket includes a main socket, and is characterized in that: there is a secondary socket, and the power supply circuit of the secondary socket is provided with a switch controller that includes a comparator. controlled electronically controlled switch; a bridge rectifier is connected in series in the power supply circuit of the main socket, and a bidirectional thyristor and a power-taking diode composed of a plurality of crystal diodes connected in series are connected in series in the DC output circuit of the bridge rectifier , a trigger control switch is connected between the two anodes of the bidirectional thyristor; the sampling input circuit of the comparator is connected to the power-taking diode; a delayer input terminal is connected to the power-taking diode , the output terminal of the delayer is connected to the sampling input circuit, and the electronically controlled switch is controlled to be turned off by the sampling input circuit and the comparator within a set time after the power-fetching diode is powered, and After a set time after the power-taking diode is powered, the sampling input circuit controls the opening or closing of the electronically controlled switch through the comparator according to the potential of the power-taking diode.

Among the above technical solutions, a more specific solution is: the electric control switch is connected by bidirectional thyristors.

Further: self-recovery resistors are connected in series in the power supply circuits of the main socket and the secondary socket.

Further: a piezoresistor is connected to the input terminal of the total power supply.

Owing to adopting above-mentioned technical scheme, the present invention has following beneficial effect:

1. When the present invention is in use, the set-top box attached with WiFi is inserted on the dedicated main socket, and the TV set, stereo and other electrical appliances are inserted on the auxiliary socket; the main switch key K1 controls the opening and closing of the whole socket; when all the electric appliances are When you need to turn off the power, you only need to turn off the main switch key K1, and it is not necessary to turn off the switches of each electrical appliance one by one; 0" standby, which physically cuts off the 220V mains power, which solves the problem of energy waste caused by the power part of the TV and other related circuits still in a live working state after shutdown. And when you want to keep WiFi available, you don’t need to turn off the main switch key K1, you only need to press the remote control of the set-top box to turn it off. All electrical appliances are in a power-off state; at this time, if you need to turn on the TV again, you only need to press the remote control of the set-top box to turn it on, and the conversion of various needs is very convenient and quick.

2. The present invention has over-current (when the power is cut off due to over-current, the smart socket will automatically return to normal after 1 minute of troubleshooting), over-voltage, instantaneous loss of voltage, low-voltage power-off protection, lightning strike power-off protection and other functions, It protects the safety of electrical appliances such as TV sets and users to a greater extent, and greatly prolongs the service life of electrical appliances.

Description of drawings

Fig. 1 is a schematic diagram of the principle structure of the present invention.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the present invention is further described:

As shown in Figure 1, the set-top box smart socket includes a main socket CZ1 for supplying power to the set-top box and two auxiliary sockets CZ2 for supplying household appliances such as TV sets; a bridge rectifier is connected in series in the power supply circuit of the main socket CZ1 DZ and self-recovery resistor RX1, the DC output circuit of the bridge rectifier DZ is connected in series with a bidirectional thyristor BT1 and a power-taking diode composed of four crystal diodes D3-D6 connected in series, and the two anodes of the bidirectional thyristor BT1 A manual switch K2 and a button trigger control switch K3 are connected between them; the power-taking diode forms a low-voltage power supply, and a filter capacitor C1 is connected at both ends of the power-taking diode, and one end of the filter capacitor C1 is connected to the gate of the thyristor BT1 There is capacitor C4.

The power supply circuit of the auxiliary socket CZ2 is connected in series with an electric control switch and a self-recovery resistor RX2 connected by a bidirectional thyristor BT2, a resistor R9 and a photocoupler GE; the electric control switch is connected by a switch controller through a photocoupler GE Control, the switch controller is connected by resistance R1, R2, R4, R5, R7, R8, RT, capacitor C5, diode D2, transistor VT1 and the second comparator part IC2/2 in the integrated circuit, resistance R1 and RT It constitutes the sampling input circuit of the switch controller.

Both the switch controller and a delayer obtain power from the output terminal of the power-taking diode and the filter capacitor C1, and the delayer is composed of resistors R3, R6, capacitors C2, C3, light-emitting diode D7, and the first comparator in the integrated circuit Part of IC1/2 is connected; the reference voltage input terminal of the comparator of the delayer and the reference voltage input terminal of the comparator in the switch controller are obtained from the reference voltage setting circuit composed of resistor R4 and diode D2, resistor R1 and RT form the sampling input circuit of the comparator of the switch controller. The sampling input circuit is connected to the power-fetching diode and the output terminal of the filter capacitor C1. The output terminal of the delayer is the first comparator part IC1/ in the integrated circuit. The output terminal of 2 is connected between the resistance R1 and the resistance RT of the sampling input circuit, and adjusting the resistance RT can change the magnitude of the above-mentioned sampling voltage. The gate of the bidirectional thyristor BT1 is connected in series with the input end of the photocoupler GE.

When the main socket CZ1 is inserted into the set-top box and the switch of the set-top box is turned on, press the lock-free switch K3, the bidirectional thyristor BT1 will be unconditionally turned on, and the delayer will start timing when it obtains power from the power-feeding diode and the output terminal of the filter capacitor C1. Within a time period, the output terminal of the delayer outputs a high potential, and the voltage of the sampling input circuit composed of resistors R1 and RT is higher than the reference voltage, so that the switch comparator controls the conduction of the bidirectional thyristor BT2, and the conduction of BT1 is self-locking, and the main , auxiliary sockets are powered; when the set delay time arrives, the output terminal of the delayer is at a low potential, and the voltage of the sampling input circuit composed of resistors R1 and RT is compared with the reference voltage to determine the bidirectional thyristor on and off. When the set-top box is turned on, the voltage set by the variable resistor RT is higher than the reference voltage, the comparator controls the bidirectional thyristor BT2 to turn on, and the auxiliary socket CZ2 can provide power to the TV and other household appliances to achieve the purpose of "one-key power-on" . When the remote shutdown (standby) button of the set-top box is pressed, since the power of the set-top box becomes smaller, the voltage set by the variable resistor RT is lower than the reference voltage, and the comparator makes the switch controller control the thyristor BT1 through the gate of the thyristor BT1 Turn off, and also control the triac BT2 to turn off at the same time, the power of the main and auxiliary sockets cannot provide power to home appliances such as set-top boxes and TVs, and achieve the purpose of "one-key power-off".

When the self-locking switch (mode switching switch) K2 is pressed, the bidirectional thyristor BT1 is forced to conduct, and the main socket CZ1 is powered equally. In this mode, when you press the remote control start button of the set-top box, the set-top box is turned on and the auxiliary socket is powered on, and the TV and other electrical appliances connected to the auxiliary socket are powered on and enter the working state. When the remote control shutdown key of the set-top box is pressed, the secondary socket will be powered off. The television and other electrical appliances connected to the auxiliary socket stop working when the power is off, saving the standby power of the television and other electrical appliances connected to the auxiliary socket, and realizing the purpose of energy saving. At the same time, the WIFI function of the set-top box is retained.

According to the above electrical principle, the set-top box smart socket can control the power supply and power-off of TV and other electrical appliances through the remote control shutdown key of the set-top box, and realize "one-key communication and power-off". Combined with the overcurrent protection of the self-recovery resistors RX1 and RX2 and the overvoltage protection of the varistor VDR arranged in front of the main switch key K1 of the power supply, the safety of the home grid and the lightning protection function are realized.

Claims (4)

1. A set-top box intelligent socket, comprising a main socket, is characterized in that: a secondary socket is arranged, and the power supply circuit of the secondary socket is provided with an electric control switch that is connected and controlled by a switch controller that includes a comparator; A bridge rectifier is connected in series in the power supply circuit of the main socket, and the DC output circuit of the bridge rectifier is connected in series with a bidirectional thyristor and a power-fetching diode formed by connecting a plurality of crystal diodes in series. A trigger control switch is connected between the two silicon anodes; the sampling input circuit of the comparator is connected to the power-taking diode; a delayer input terminal is connected to the power-taking diode, and the delayer’s The output terminal is connected to the sampling input circuit. 2. The set-top box intelligent socket according to claim 1, characterized in that: the electric control switch is connected by a bidirectional thyristor. 3. The set-top box smart socket according to claim 1 or 2, characterized in that: self-recovery resistors are connected in series in the power supply circuits of the main socket and the secondary socket. 4. The set-top box intelligent socket according to claim 3, characterized in that: a varistor is connected to the input end of the main power supply.