The Design of Pressure Test System Based on MSP430 Microcontroller

Abstract

The design solution presented in this article is a pressure data acquisition system which is based on the piezoresistive pressure sensor and MSP430F249 microcontroller. It can be simulated on the Protues7. FlexiForce-A201 sensor can be seen as a variable resistance in the circuit. Using the signal conditioning circuit and on chip components ADC12 and DAC12 to realize the 8 channels of analog signals and transformation and the A/D conversion accuracy is 12-bit. The results of transformation can be both stored in the M45PE16 flash and real-time displayed on the LCD1602. This system used the on-chip peripherals and powered by button cell. This solution can realize the independence of system and data source by joining up various sensors. It is simple, low-power and universal.

The Design of a New Multi-Dimensional Parameter Acquisition Equipment with RFID Module in Sensitive Logistics Environment

“…The system hardware block diagram shown in Figure 2, the system consists of six main modules, power modules, processors, RFID modules [2], intelligent power-saving trigger module, multi-channel data acquisition module, configurable parameters acquisition module. The following describes each module hardware design.…”

“…At same times STM32 control AS3991 Circuit. The System Software System software design is related to the level of efficiency of the entire system running, the system uses the C language and assembly of hybrid programming [2]; Because the system uses a battery-powered, taking into account the demand to reduce system power consumption and practical application, enter the low-power mode immediately after the power system initialization, when the intelligent power-saving module to capture moving objects and label detection on to the readerwake-up signal, open multi-channel data acquisition module and activate the RFID tag; After the end of the data collection, RFID tags will send electronic code to the target reader. Running process of the system is shown in Figure 3.…”