Water-logging safety warning device

Abstract

The invention relates to the technical field of electronics and discloses a water-logging safety warning device. The water-logging safety warning device comprises an insulation base, a circuit board mounted on the insulation base, a control system arranged on the circuit board, a warning system and at least two sets of conductor units which are connected with the control system, and a power supply for supplying electricity for the control system and the warning system. Each set of conductor units comprises two conductors, one end of the two conductors is provided with root nodes, the root nodes are welded on the control system, the other end of the two conductors in each set of conductor units is free ends, and each free end is provided with a contact. Based on the step voltage principle detection, the water-logging safety warning device can effectively detect whether an water-logging area can be passed through safely or not and helps people to discover the safety hidden trouble of an water area in time, has the advantages of being accurate in detecting results, high in precision, convenient to carry, use and recycle, simple in structure, low in cost, and suitable for mass production and usage.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a waterlogging safety warning device. Background technique [0002] During urban flooding, power supply equipment may be soaked in flooded areas or power supply lines may be disconnected and cause electricity leakage. Although the conductivity of pure water is extremely weak, generally waterlogged water contains a large amount of minerals and other impurity ions, which enhances the conductivity, and the current will diffuse into the water through these impurities, forming a distributed potential in the water. At this time, if people walk in water, a potential difference will be formed between the two legs, and there will be an electric shock danger when the step voltage is greater than 36V. Higher step voltage will cause numbness and cramps in both feet. If the body falls into the water, the electric shock voltage of the human body will increase, and the current may flow thr...

AI Technical Summary

Problems solved by technology

[0005] Chinese patent (publication date: April 29, 2015, publication number: CN 104574800A) discloses a culvert leakage warning device, which arranges leakage sensors at different heights of the culvert, and places them at the highest point of the culvert to indicate when leakage occurs The device can send out prompts immediately, but the leakage sensor and the prompting device of the device are fixed at a certain height or positions of the culvert and need to be installed, which is not conducive to maintenance and recycling, and the cost is relatively high, and it can only detect whether there is leakage at the installation place , the use is not flexible enough, because there are many and random areas that may be flooded, it is impossible to install such an installation for each area; in addition, the prompt device may be submerged and the prompt cannot be seen, and the system has higher requirements for waterproof and sealing conditions

[0006] To sum up, there is currently no relatively complete and convenient measure to reduce the risk of electric shock due to wading. Therefore, a device that can detect whether waterlogging is safe and issue a warning is urgently needed to help people discover hidden safety hazards in water areas in time and reduce the risk of electric shock due to water damage. Electric shock hazard caused by wading in water

Images