Research And Development On A Oil-Pump Special Ampere Meter

Nowadays, in our country the oil-pump in using is beam-pump worked by AC electromotor. During one stroke the electromotor will receive the torsional quadrature of positive and negative. When it is worked under the negative quadrature the electromotor will change to dynamotor. This doesn't only increase the wasting of the circuitry, but also interfere the electrical system. So the quality of the system is influenced. In order to decrease the influence of the negative power, we outfit the electromotor with the balance weight. So it is very important to inspect the oil-pump working state. The abroad configure instruments of oil-pump have high precision, but they are expensive. And in our country we also have the ampere meter to test the oil-pump. But they can't test the actual electrical current of the oil-pump on real time. Depending on this, we can't outfit the rational balance weight to the oil-pump. Hereby we research a new oil-pump special ampere meter, it can realize the rational balance weight. In the same time, it also tests the voltage, ampere, single item power and power factor. In addition, it can draw the curve of the power and ampere. All of this can offer the directly scientific foundation to the oil field engineersThe core of the instrument is 89C51 single chip. The virtual value change is realized by AD536. The A/D change is finished by AD574. We also outfit the instrument with the LCD module and printer. The instrument devised by us can be used alone as well as be worked with personal computer together, which can compose a two-level watching-measuring system. The communication between them depends on RS-232 serial port. In the design of the software, C language is used in the lower computer to complete structural programming. OOP technology and Visual Basic 4.0 are used in the development of the superior computer. In this way, the time spent on the development of this instrument is shortened, with a better interface for users, which makes operation easier. The whole instrument is small, full function, safety and reliable. It is very adapt to our oil field manage engineers.