Portable elevator safety performance monitoring system based on CAN bus

Abstract

The invention discloses a portable elevator safety performance monitoring system based on a CAN bus. The system comprises an acceleration detection module, a noise detection module, a power detection module, a man-machine interaction module, an MCU master control module, a gateway module, a power supply module and other parts, wherein all the functional modules are provided with CAN bus interfaces; through CAN bus configuration, the functional modules can be configured according to the requirement of a field test and realize plug and play, and the structure of the detection system is more reliable and flexible; a CAN communication protocol is set up, and detection results are encrypted with MD5, so that the authenticity and traceability of information are ensured; and a remote server can supervise schedules of maintenance personnel and allocate tasks in real time, and thus is conductive to quickening the elevator detection process and improving the efficiency.

Description

technical field [0001] The invention belongs to the field of elevator safety detection, in particular to a portable elevator safety performance monitoring system based on CAN bus. Background technique [0002] According to statistics, as of the end of 2015, the number of elevators in use in my country has reached 4 million units, and it has grown at a rate of about 20% per year. The number of elevators, annual output, and annual growth have ranked first in the world. The largest elevator market. [0003] In recent years, the number of elevators with a service life of more than 10 years has been increasing year by year, becoming an "old elevator" with high safety hazards and high security pressure. In developed cities such as Beijing, Shanghai, and Hangzhou, the proportion of old elevators has reached the level of elevators in use. 10% or more. In 2014, the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China conducted sp...

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Problems solved by technology

In 2014, the General Administration of Quality Supervision, Inspection and Quarantine conducted spot checks on 2,523 old elevators that had been used for 15 years or more in some provinces and cities, and found that 7% of them had major safety hazards

At present, the commercial protocols based on the CAN bus mainly include DeviceNet and CANopen. However, since these two buses are developed for general purposes, the structure is relatively complicated. CANopen needs to define the Object Dictionary, and DeviceNet must first Only when a connection is established can communication be established, which is not suitable for special occasions such as elevator detection systems with relatively simple communication processes

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