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This paper studies the design of a new monitoring and control system equipment , the device is a modular formation tester accessory products in the petroleum logging industry . According to the functional requirements of the formation tester , and the characteristics of the mechanical unit module , the purpose of the study design of the instrument is as modular formation tester hydraulic power module , a single detector module , taking into account the pump module is a generic detection equipment , for the stability of equipment performance testing, troubleshooting , equipment assembly , commissioning , etc. . In the analysis of the practical problems encountered in studies Modular Formation Tester R \u0026 D process , and in accordance with the requirements of the technical design , the design of this study include: First, the analysis of the hydraulic power modules , modular formation tester single detector module function , mechanical structural unit strain pressure , temperature , motor speed and current characteristics of the signal , and the solenoid valve and the logic of the brushless DC motor control characteristics , combined with the actual situation of the design program of monitoring and control equipment ; Secondly, from hardware and software the two combined to optimize the system design , the structural design of the main function of the instrument and the actual content . And described in detail the signal processing circuit of the strain of pressure, temperature , current, etc. in the hardware system , the electromagnetic valve drive , with the overcurrent protection circuit design, and software system based on chip AVR ATMEGA128 and LCD display module a signal acquisition , control , display other functions of the design ; Finally, the analysis of experimental data according to the electrical connection wiring diagrams , assembly , commissioning , troubleshooting , circuit optimization program features design , and in accordance with the actual use of engineering and equipment stability requirements , complete the design type . Based on actual use , it can be seen that the good performance of the device to meet the requirements of the technical indicators , further R \u0026 D design and engineering of modular formation tester system used to provide a good service , a very important significance.
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