The digital pressure transmitter integrates digital information technology into the pressure transmitter. The pressure transmitter built in this way has the characteristics of strong anti-interference ability, long signal transmission distance, good stability, and high precision. The software technology of the pressure transmitter Level plays an important role here. Generally, the software technology of pressure transmitter includes the following five technologies: digital filtering technology, scale conversion technology, digital zeroing technology, temperature compensation technology and nonlinear compensation technology. Many pressure transmitters use these five technologies at the same time, and some choose one or two of them. These technologies are very helpful for improving the performance of pressure transmitters. Let’s talk about the software technology of these five pressure transmitters.
Digital filtering technology: When the analog output signal of the pressure transmitter enters the microprocessor after analog-to-digital conversion, it is often mixed into random noise interference such as sharp pulses, which must be weakened and filtered. Digital filtering technology solves this problem. Disadvantages.
Scale conversion technology: The analog signal is converted from analog to digital to obtain a series of digital data, which must be converted into data with dimensions before calculation and display. This requires the use of scale conversion technology.
Digital zero adjustment technology: Various procedures are used to achieve offset calibration such as zero drift and gain drift.
Temperature compensation technology: establish a mathematical model to express the temperature, and use mathematical processing methods such as difference to effectively achieve temperature compensation, which depends on the magnitude of the effect of temperature on the output of the pressure transmitter.
Non-linear compensation technology: According to the measured characteristic curve, carry out piecewise interpolation, as long as the number of interpolation points is reasonable and enough, excellent linearity can be obtained.
When designing a pressure transmitter, it is necessary to comprehensively use these five pressure transmitter software technologies. This is very useful for designing high-end pressure transmitters. The hardware is the basis of the pressure transmitter, and the software is the pressure transmitter. Soul, taking both into account.
