A vacuum toilet fault detection device and method

Abstract

This application discloses a vacuum toilet failure detection device and method. After the vacuum toilet is flushed, the discharge valve is closed, and the pressure sensor detects the pressure signal of the discharge pipeline between the discharge valve and the bedpan; When the negative pressure gradually returns to normal pressure, it is judged that there is no fault in the first stage; when the pressure signal obtained by the pressure sensor is still negative for a certain period of time, it is judged that there is a fault in the first stage, and the controller controls each component to troubleshoot, and then The second stage is judged, and multiple positions of the vacuum toilet are detected, and the fault judgment and troubleshooting are carried out sequentially through the data fed back from each detection position, and part of the faults are eliminated during the fault judgment, which can realize multiple vacuum toilets. Differentiate multiple faults under such circumstances to improve fault detection efficiency and troubleshooting speed.

Description

technical field [0001] This application relates to the field of sanitation systems, in particular to a vacuum toilet fault detection device and method. Background technique [0002] The faults of traditional vacuum toilets are found through human observation. When the cleaning staff or toilet personnel find that the toilet does not flush or does not drain after flushing, they will report the fault to the maintenance personnel and rely on manual fault diagnosis and treatment; Untimely detection and handling of faults will not only affect the use needs of toilet users, but also affect the service life and energy consumption of the vacuum system. [0003] For the solution to this problem in the prior art, such as the "vacuum toilet with automatic fault detection function" disclosed in Chinese patent document ZL201020254995.1, it includes a vacuum toilet, a flush valve, a discharge valve, a pressure detection device, and a control module , to achieve fault detection; the invent...

AI Technical Summary

Problems solved by technology

[0002] The faults of traditional vacuum toilets are found through human observation. When the cleaning staff or toilet personnel find that the toilet does not flush or does not drain after flushing, they will report the fault to the maintenance personnel and rely on manual fault diagnosis and treatment; Untimely detection and handling of faults will not only affect the use needs of toilet users, but also affect the service life and energy consumption of the vacuum system

[0003] For the solution to this problem in the prior art, such as the "vacuum toilet with automatic fault detection function" disclosed in Chinese patent document ZL201020254995.1, it includes a vacuum toilet, a flush valve, a discharge valve, a pressure detection device, and a control module , to achieve fault detection; the inventor found that it only uses a pressure sensor to detect the gas pressure at the inlet of the discharge valve, and only uses this as a criterion to judge the fault and give an alarm. However, although this detection device has realized fault detection, but It only realizes the detection of some faults, such as the leakage of the drain valve and the blockage of the drain valve, but the incomplete blockage of the bedpan inlet and the inlet pipeline cannot be detected and judged, and it is difficult to deal with faults in various complicated situations

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