Vehicle tire pressure monitoring system based on LoRa and eMTC and using method

Abstract

The invention provides a vehicle tire pressure monitoring system based on LoRa and eMTC and a using method. The vehicle tire pressure monitoring system comprises a tire pressure monitoring intelligent sensor and an intelligent receiving display screen. The two low-power-consumption communication technologies of LoRa and eMTC are combined, a low-power-consumption microprocessor is adopted, accordingly, long-time power supply can be achieved by using a button battery or a small solar module, positioning can be achieved to obtain the vehicle position without adding a GPS module, and vehicle using safety is further improved. A tire temperature and pressure monitoring device is independent from a vehicle, and installation, use and maintenance are quite convenient; and monitoring data can be remotely transmitted to a remote cloud platform and stored, and historical data can be conveniently traced in the follow-up process. The hardware cost is low, and the external structure can be designed to be quite small.

Description

technical field [0001] The invention relates to the technical field of automotive electronic products, in particular to a vehicle tire pressure monitoring system based on LoRa and eMTC and a usage method. Background technique [0002] During the driving process of the vehicle, an important indicator to ensure its safety performance is the tire pressure. Whether the tire pressure is too low or too high, it not only affects the driving comfort, but also has potential safety hazards. For example, if the tire pressure is too low, fuel consumption will increase, tire wear will be accelerated, and the tire will burst easily, or if the tire pressure is too high, the friction between the tire and the ground will be small, which will bring unsafe factors to driving safety due to the weakening of its braking performance. [0003] One way of traditional tire pressure monitoring is to install and integrate smart sensors into tires. This smart sensor also integrates a wireless transmitte...

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Problems solved by technology

[0007] The Chinese patent with the patent number CN200920001299.7 provides a tire pressure monitoring system, which includes a radio frequency transmission module working in ASK (amplitude shift keying modulation) mode, and controls multiple radio frequency transmission modules by processing sub-modules Alternate work. In addition to high power consumption, this mode of work requires parallel connection of multiple RF transmission modules and unified processing on one control device. Obviously, it is not as flexible as an independent device, and installation and maintenance are also troublesome.

[0008] The Chinese patent with the patent number CN201210192559.X provides a tire pressure monitoring method and system based on wireless sensors, which improves the operation of the TPMS system by changing the ID in the data frame sent by the TPMS sensor from static to dynamic rolling code changes. reliability, but it only provides an improvement for the existing tire pressure monitoring system TPMS. If there is no TPMS on the car, tire pressure monitoring cannot be realized

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