Method for controlling switch

Abstract

The invention discloses a method for controlling a switch. The method comprises the steps of providing an optical sensing unit to detect an environment variable, and switching on the switch when the environment variable is not less than a first threshold; switching off the switch when the environment variable is still less than the first threshold in a first unit time after the switch is switched on; and switching off the switch when the environment variable is still less than a second threshold in a second unit time after the switch is switched on. The first threshold is more than the second threshold, but the first unit time is more than the second unit time.

Description

technical field [0001] The present invention relates to a method of controlling a switch, and in particular to a method of controlling a switch based on environmental changes. Background technique [0002] The control system of electrical equipment can be divided into traditional manual control system and modern automatic control system according to the control mode. For traditional manual control switches, users have to manually turn on, turn off or adjust the state of electrical appliances according to their current needs. As for automated electrical devices, such as automatic lighting fixtures, they can be automatically adjusted according to user needs (for example, ambient light brightness or whether the human body is within the use range), and manual methods are omitted. In addition, the automatic control system can also prevent the user from forgetting to turn off the switch, resulting in unnecessary power consumption. [0003] The main operating principle of the aut...

AI Technical Summary

Problems solved by technology

[0007] 1. The directivity is too high: the directivity of the infrared light source is too high, and it can only detect objects directly in front, so when the target is not directly in front, it cannot be detected

[0008] 2. The environment is easy to interfere: because the principle of the blocking infrared sensing device is that the object reflects the infrared light source

If in the erection environment, there happens to be objects in front that reflect the infrared light source, it will cause sensing malfunction

[0009] 3. Substances have different reflectivity: Since the blocking infrared sensing device emits infrared light sources and detects through object reflection, but the reflection characteristics of the object surface are different (such as different clothing materials and colors), resulting in inconsistent sensitivity. Objects with different surface reflective properties may be touched correctly at different distances

[0010] Due to the above problems, blocking infrared sensing products can only be installed in places with simple environments and simple usage methods, such as urinals or sinks in the bathroom.

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