Low Power Design Of Wearable Shockwave Test Wireless Communication System

In the complex battlefield environment,the shock wave will the soldiers health caused great influence,so the wireless communication system shock wave signal detection of soldiers health status,and application of wireless communication technology has important significance in the device,but currently on the market of wearable shock wave detection device most use WiFi network or use ZigBee network,The overall power consumption of the system is large,and the command must be issued by the PC,which is not convenient to use.Bluetooth Mesh network has the characteristics of low cost,low power consumption and easy networking,and has gradually become a mainstream wireless network in various environments.This paper mainly builds a wireless communication system that can be applied to battlefield communication on the basis of Bluetooth Mesh network.The system mainly relies on battery power supply,but the power of all batteries has a certain limit,so it needs to design the low power consumption of the system.This paper is mainly studied from the following three aspects:In terms of hardware,low-power components are selected to complete the hardware system design of mesh networking.The requirement of wireless communication system in battlefield is analyzed.The Bluetooth chip STM32WB55 with high communication rate and low power consumption is selected as the networking chip.The chip provides a 13-bit ADC inside,and uses the ADC inside to collect sensor data.The use of the chip can reduce the number of peripherals,not only making wearable devices smaller,but also reducing the power consumption;A power configuration scheme is designed for the system energy supply module,in which a powerful switching mode power supply(SMPS)is embedded.Two different power configurations can be configured: SMPS power supply and LDO power supply.Use SMPS configuration when supply voltage is higher than 2V,otherwise use LDO configuration.When using the LDO power configuration,the power consumption will be 10% of the original.To prevent data loss in the event of a VDD(external power supply for I/O and system analog modules)power failure,you can use the battery backup domain to retain data in the backup registers.In terms of software,the wireless mesh network is built by using the improved IAODV routing algorithm.In this network,the node model of AODV routing protocol is improved from single-path data transmission to multi-path data transmission,which makes it more suitable for mesh network.Compared with traditional AODV,the network overhead of the new routing protocol IAODV is reduced to a certain extent,and the purpose of reducing node energy consumption and improving network performance is realized.Finally,a laboratory environment full of obstacles is used instead of a battlefield full of obstacles to test the low-power Bluetooth Mesh network.The test results show that the power consumption of the system in Bluetooth communication mode is 179.04 MW.Compared with the power consumption of WiFi,ZigBee and other wireless communication modes,it is found that the power consumption in this paper is reduced by 28%.Compared with the improved IAODV routing protocol,the power consumption measured using the traditional AODV routing protocol is reduced by 11%.Meet the requirements of battlefield communication low power consumption.