Low-power-consumption circuit of WIA-PA wireless vibration transmitter and control method

Abstract

The invention relates to a low-power-consumption circuit of a WIA-PA wireless vibration transmitter and a control method. The low-power-consumption circuit comprises a clock circuit, a power supply control circuit and a communication circuit among a power supply control and processor, a wireless transceiver and the clock circuit, and the power supply circuit automatically judges the working process of the wireless vibration transmitter through signal interaction among the power supply control and processor, the wireless transceiver and the clock circuit; according to the judgment result, the on-off of the working power supplies of the sensor, the signal processing unit, the analog-to-digital conversion unit, the processor and the peripheral FLASH and SRAM is controlled, so that the power consumption of the transmitter is reduced to the minimum in the non-working period, and the service life of the battery is prolonged. The low-power-consumption control method comprises the following steps: automatically judging and identifying a plurality of working states such as power-on parameter initialization of the vibration transmitter, periodic automatic start acquisition and wireless transmission, remote wireless instant acquisition and the like, and controlling the on-off of each circuit module power supply according to each working state operation process, thereby realizing ultra-low-power-consumption design.

Description

technical field [0001] The invention relates to a low-power consumption circuit and a control method thereof, and is especially suitable for wireless instruments that require fast and large data acquisition, processing and calculation, such as wireless vibration transmitters for fault diagnosis, predictive maintenance and the like. Background technique [0002] In the petrochemical and other industrial fields, the condition monitoring and fault diagnosis of pump machinery and equipment are particularly important. The vibration state monitoring and fault diagnosis technology of the pump is of great significance to ensure the stable, safe and efficient operation of the equipment, reduce unplanned shutdowns in the production process and prevent the occurrence of safety accidents. The vibration transmitter installed on the surface of the mechanical equipment senses the vibration signal of the equipment through the acceleration sensor directly installed on the surface of the mach...

AI Technical Summary

Problems solved by technology

[0003] With the development of industrial wireless technology, the combination of industrial wireless technology and battery-powered vibration transmitter can solve the application problems such as complex installation and wiring of wired instruments, poor scalability of new measuring points, etc.

However, in the diagnosis process, large data collection and time domain and frequency domain calculation processing must be realized by using high-speed processors, such as DSP. The deep sleep current of the processor still reaches several mA levels, so that most of the battery is consumed in static current. directly affects battery life

[0004] In order to solve the problem of power consumption, most wireless vibration transmitters choose to use low-power embedded processors to implement, resulting in a significant reduction in calculation speed, main frequency, and storage space, and the execution time of signal data processing operations is long, and the cache is insufficient. As a result, multiple cycles of data collection and calculation cannot be performed, resulting in insufficient data obtained by the diagnostic system to support fine diagnostic algorithms, reducing the application of fault diagnosis to status trend monitoring, and greatly reducing the application effect of the system

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