CN202837884U - Intelligent electricity-saving protector for office equipment - Google Patents

Abstract

The utility model discloses an intelligent power-saving protection device for office equipment, which can reliably realize the power on when someone is in the room and automatically cut off the power when no one is in the room, and can shorten the power-on time of the office power equipment to the greatest extent. It includes an AC power supply, a central processing unit, a pair of wireless transceiver modules and a seat pressure sensor. The AC power supply is connected to the electrical equipment through a switch controlled by the executive circuit, and one of the wireless transceiver modules is connected to the output of the seat pressure sensor. , another wireless transceiver module is connected to the central processing unit to send input signals to the central processing unit, and the central processing unit is connected to the execution circuit to send control signals to the execution circuit.

Description

Intelligent power-saving protection device for office equipment

technical field

The utility model relates to a control device for office equipment, in particular to an intelligent power-saving protection device for office equipment.

Background technique

At present, there are many kinds of power-saving protectors for office automation equipment. From the principle point of view, the types include timer type, pyroelectric infrared type, light control type, filter type, etc., but most of them have the following disadvantages: unstable work, Poor reliability, susceptible to interference by ambient temperature and light; low judgment accuracy, poor power saving effect; complex circuit, high cost.

Utility model content

Aiming at the deficiencies of the existing technology, the technical problem to be solved by the utility model is to provide an intelligent power-saving protection device for office equipment, which can reliably realize power-on when someone is in the room and automatic power-off when no one is in the room, and shorten the power-on time of office power equipment to the greatest extent. usage time.

The basic concept of the technical solution adopted by the utility model is: an intelligent power-saving protection device for office equipment, including an AC power supply, a central processing unit, a pair of wireless transceiver modules and a seat pressure sensor. The AC power supply passes through a switch controlled by an executive circuit. After connecting to the electrical equipment, one of the wireless transceiver modules is connected to the output of the seat pressure sensor, the other wireless transceiver module is connected to the central processing unit to send input signals to the central processing unit, and the central processing unit is connected to the execution circuit to send input signals to the execution circuit. control signal.

The beneficial effect of the utility model is that the seat pressure sensor is used to detect whether there is someone sitting on the office seat to judge whether there is someone in the office, and the central processing unit is used for delay processing before the AC power is turned off, so its work is not affected by the ambient temperature and light. Interference, stable and reliable work, high judgment accuracy, power on when there are people in the room, automatic power off when no one is in the room, maximum energy saving, simple circuit, and low cost.

Description of drawings

Fig. 1 is a structural block diagram of the utility model; Fig. 2 is a structural block diagram of a seat pressure sensor unit.

In the figure: seat pressure sensor unit 1 wireless transceiver module I2 central processing unit 3 overvoltage detection circuit 4 overcurrent detection circuit 5 switch 6 executive circuit 7 switching power supply 8 timing unit 9 wireless transceiver module II10 seat pressure sensor 11 lithium Battery 12 Power input Ui Power output Uo

Detailed ways

As shown in the drawings, the utility model includes a power input Ui, a central processing unit 3, a wireless transceiver module I2, a seat pressure sensor unit 1, wherein the seat pressure sensor unit 1 includes a wireless transceiver module II10 and a seat pressure sensor 11, The power input Ui is connected to the electrical equipment through the switch 6 controlled by the executive circuit 7, wherein the wireless transceiver module II10 is connected to the output of the seat pressure sensor 11, and the wireless transceiver module I2 is connected to the central processing unit 3 as the central processing unit 3 Send the input signal, the wireless transceiver module II10 and the wireless transceiver module I2 realize the wireless transmission of the signal between the seat pressure sensor 11 and the central processing unit 3, transmit the seat pressure signal to the central processing unit 3, and the central processing unit 3 is connected to the execution circuit 7 sends control signal for this execution circuit 7, when there is seat pressure signal, sends power supply instruction to execution circuit 7 through central processing unit 3 judgment, and office equipment is electrified, when there is no seat pressure signal, central processing unit 3 is in setting After a certain delay (can be set to 30, 60, 90 minutes), an instruction of power-off is sent to the executive circuit 7, the switch 6 is automatically disconnected, and the office equipment is completely cut off from the AC power supply.

If a short circuit occurs in the office equipment or the output voltage is too high, the over-current detection circuit 5 or over-voltage detection circuit 4 sends a signal to the central processing unit 3, and the central processing unit 3 sends a power-off command to the execution circuit 7 to turn off the switch 6. The power supply of electrical appliances is cut off, so that the office equipment can achieve the dual functions of safety and energy saving.

The utility model is powered by a switch regulated power supply 8, which provides 5V DC power supply. The switch regulated power supply 8 is composed of an AC/DC power supply module and a filter circuit. The power supply is stable and does not interfere with the original signal. The seat pressure sensor 11 and the wireless transceiver module II10 are powered by a 12V lithium battery 12 . The central processing unit 3 selects C8051F340 for use, and the software is coded in C language, which is suitable for small systems.

The signal transmission mode between the seat pressure sensor 11 and the central processing unit 3 can be wired or wireless; the wired circuit is simple, and the signal transmission is stable and reliable, but the wiring has certain difficulties, and the movement range of the seat is limited , the wireless circuit is more complex than the wired, and may be interfered by other wireless signals, but the movement of the seat is not restricted without wiring. The utility model adopts a wireless transmission mode, and both the wireless transceiver module I2 and the wireless transceiver module II10 use the Xbee S2 module.

The seat pressure sensor 11 is a film type contact sensor, the contacts of the sensor are evenly distributed on the force-bearing surface of the seat, and a trigger signal is generated when the seat is subjected to external pressure. If there are multiple people working in the office, seat pressure sensors should be installed separately. At this time, each sensor is in an OR logic relationship. As long as there is a seat pressure signal, the power supply will be turned on immediately. Only when there is no seat pressure signal, it will be delayed. Cut off the power after a while.

The utility model has the following characteristics: stable and reliable work, free from the interference of ambient temperature and light; accurate judgment, when someone in the room is powered on, and no one in the room is automatically powered off, the power-on time of the electrical appliance is shortened to the greatest extent, and the service life of the electrical appliance is prolonged; Or when a short circuit occurs in the line, it will automatically and quickly cut off the power to prevent accidents; when personnel leave, it will automatically and completely disconnect the electrical connection, effectively avoiding lightning damage such as high and low voltage lines.

Claims (1)

1. office equipment intelligent power-saving protector; comprise AC power; access consumer behind the switch of this AC power process by executive circuit control; it is characterized in that; it also comprises central processing unit, a pair of radio receiving transmitting module and seating pressure sensor; wherein a radio receiving transmitting module links to each other with the output of seating pressure sensor; another piece radio receiving transmitting module connects central processing unit and send input signal for this central processing unit, and central processing unit connects executive circuit and send control signal for this executive circuit.

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