Passive liquid-level measuring device

Abstract

The invention discloses a passive liquid-level measuring device. The device comprises at least one inductive sensor and a decoding circuit module, wherein the inductive sensor is a pressure sensor or a gravity sensor and is disposed at a liquid container and used for acquiring gravity or pressure change parameters in the liquid container in real time. The pressure or gravity change parameters are transferred to the decoding circuit module, and the decoding circuit module acquires liquid-level change parameters in the liquid container according to the prestored cross section and liquid density of the liquid container, and is connected with an external host computer through a data interface. The passive liquid-level measuring device can be installed in a household electrical appliance, and acquire the liquid-level change parameters in a container dynamically in real time.

Description

technical field [0001] The invention relates to the technical field of liquid level detection, in particular to a passive liquid level measuring device. Background technique [0002] The amount of liquid in the liquid pipeline can be obtained by flow measuring equipment, and the amount of water in the container is generally obtained by a water level sensor, such as some automated smart water heaters, the water level sensor in the container transmits the detected water level signal to the control The processor unit in the controller compares the measured water level signal with the set signal to obtain the deviation, and then according to the nature of the deviation, sends an "open" and "close" command to the water supply electric valve to ensure that the container reaches the set value. water level. After the water intake is completed, the temperature control unit sends an "open" command to the electric valve supplying the heat medium, and starts to heat the water in the co...

AI Technical Summary

Problems solved by technology

[0003] With the rapid development of electronic technology, commercial or household consumer electronic products are becoming more and more diversified and more and more high-precision, and household appliances such as water dispensers, coffee machines, and cooking machines that are indispensable in daily life More and more emphasis is placed on high precision. The existing water level sensors can no longer meet the requirements of high precision, and the existing water level sensors need to be in contact with liquids or soaked in liquids. They cannot be fully cleaned during production and installation, and the existing water level sensors Most of the sensor principles use magnetic devices to float in water, or the principle of infrared penetration or reflection, or the principle of capacitive discharge for detection. The accuracy of the existing water level sensors mentioned above can no longer meet the requirements, and there are tolerance differences between individuals.

In use, it will be limited by conditions or life issues

Images