Safety energy-saving method for stand-by state of electric appliances and controller thereof

Abstract

This invention relates to a stand-by safety energy saving method and its device for electrical appliances including CPU, a memory, infrared send/receive system and a power source. It also includes zero-cross and an on/off detection circuit in series in AC input line and the output is linked with an end of CPU relay providing AC power to controlled appliances, its zero-cross trigger driver and a manual switch/study keys. Method: the original machine infrared remote controller sends on/off signals to an infrared send/receive system, the received data signal by CPU is compared with the data preset in the memory, if the result is the same, then it's regarded as a correct signal, the zero-cross trigger driver is triggered or closed to pick-up or break the relay, CPU decides if the appliance continues working or stands-by.

Description

technical field [0001] The invention relates to a safety and energy-saving technology for electrical appliances, in particular to a method and a control device for the safety and energy-saving of electrical appliances, which is applicable to all electrical appliances with infrared remote control switches. Background technique [0002] At present, there are mainly three schemes for electrical standby technology: 1. Transformer standby, 2. Switching power supply intermittent oscillation standby, 3. Special standby device. [0003] The first two standby modes are commonly used in China, and their power consumption is relatively large, usually 5W to 25W. [0004] The standby power consumption of the third standby mode is generally 1W~5W, which is gradually adopted in foreign countries, and this standby mode not only has a certain power consumption, but also some control problems, such as: some need to change the controlled Circuits to cooperate with the work, and some AC power-...

AI Technical Summary

Problems solved by technology

[0003] The first two standby modes are commonly used in China, and their power consumption is relatively large, usually 5W to 25W.

[0004] The standby power consumption of the third standby mode is generally 1W~5W, which is gradually adopted in foreign countries, and this standby mode not only has a certain power consumption, but also some control problems, such as: some need to change the controlled Circuits to cooperate with the work, some AC power-on will change the power-on properties of the original machine (for example: some electrical appliances are in the start-up state when the AC power-on is turned on, some are in the standby state, and some are in the state when the AC was turned off last time)

When the standby circuit in the third standby mode is intermittent work mode, the time to press POWER is longer than one cycle of the intermittent work of the standby circuit when starting the electrical appliance again. Can not respond to the remote control signal at the same time, so the operation is also inconvenient. The representative of this kind of scheme is the "electrical appliance energy-saving standby method and circuit" with the patent number of 00136997.0, etc.

[0005] For the third standby mode, which only supplies power to the remote control receiving head, although the standby power consumption of this mode can be reduced, the operation is inconvenient and the power consumption is also uncertain. The reason is: it starts the process by pressing any key on the remote control or Keyboard POWER to wake up the CPU to work, and press the power button again within the specified time, that is, to start, you must press the keyboard POWER twice within the specified time, or press any key on the remote control + POWER on the remote control, so the operation is inconvenient, and When using other infrared remote controllers, the CPU will also be awakened to work (at this time, it is equal to the power consumption of the normal standby mode), so the host CPU will often start, and such standby power consumption is uncertain (such as the "home appliance" patent No. 99238505.9 No-load depletion device")

The design scheme of "remote control system and its standby circuit" similar to the patent No. 93120032.6 is purely a simple electronic switch. For some electrical appliances that are in the standby state when the AC is turned on, it cannot be restarted if the original operation method is used.

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