Intelligent water injection device and method

Abstract

The invention discloses an intelligent water injection device and a method. The device comprises a container placement area, an infrared sensor, an ultrasonic sensor and a controller, wherein the container placement area comprises a table surface used for bearing a container and a top surface opposite to the table surface; the infrared sensor is arranged on the top surface and used for carrying out infrared scanning on the table surface and the container so as to obtain the height h from the inner bottom of the container to the upper edge of the container; the ultrasonic sensor is arranged below the table surface and used for transmitting ultrasonic waves to the container placed on the table surface so as to obtain the liquid level height d in the container; and the controller detects thath-d D is less than or equal to a set threshold, a water inlet pipe is controlled to stop water injection. According to the intelligent water injection device and the method, by arranging the infraredsensor above the container, effective measurement of the height of the inner cavity of the container can be realized by using the infrared scanning technology; and by arranging the ultrasonic sensorbelow the container, the influence of the water injection flow on the liquid level detection in the water injection process can be avoided, so that the water injection amount can be accurately controlled, and the anti-overflow purpose is achieved.

Description

technical field [0001] The invention belongs to the technical field of water injection equipment, and in particular relates to a device and a water injection control method that can automatically control the water injection amount according to the height of a container. Background technique [0002] In daily life, when people use cups and other containers to receive water on water injection equipment (such as water dispensers, etc.), due to distraction or misjudgment, the water overflows the cup, pollutes the environment, and wastes water resources. question. [0003] In order to solve this common problem in life, a detection device for detecting the height of the container and the liquid level in the container is added to some of the current water injection equipment. For example, the Chinese patent application with application number 201610109448.6 discloses an intelligent automatic water injection system and method, such as figure 1 As shown, an infrared transmitter 10 ...

AI Technical Summary

Problems solved by technology

[0005]1. When measuring the height of the container, it is necessary to use multiple infrared receivers. The distance determines the measurement accuracy of the container height, the more the number of infrared receivers used, the higher the measurement accuracy of the container height, but correspondingly, the structure and assembly of the equipment are more complicated

Therefore, due to various considerations such as structural design and product cost, the number of infrared receivers used will not be too large, which leads to a low measurement accuracy of the container height

[0006]2. Limited by the layout of the infrared emitter and infrared receiver, the existing detection device can only measure the height from the outer bottom of the container to the upper edge of the container (that is, the outer height of the container), but cannot measure the height from the inner bottom of the container to the upper edge of the container (that is, the height of the inner cavity that the container can actually hold liquid)

Since the ultrasonic sensor is located above the container, the water flow will block the transmission path of the ultrasonic wave during the process of injecting water into the container, which will greatly affect the measurement accuracy of the liquid level. Therefore, the phenomenon of liquid overflow cannot be completely eliminated.

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