Transmitters, multi-stage filters and weighing systems

Abstract

The invention provides a transmitter, a multistage filter and a weighting system. The transmitter comprises the multistage filter, an analog to digital converter, a microprocessor and a digital signal transmission interface, wherein the multistage filter is used for filtering clutter signals in received analog signals, the analog to digital converter is used for converting signals with the clutter signals filtered by the multistage filter into digital signals, the microprocessor is used for format conversion of the digital signals converted by the analog to digital converter and converting into a protocol format that the transmitter communicates with a remote end, and the digital signal transmission interface is used for transmitting the digital signals converted by the microprocessor to the remote end. The analog signals after filtering are converted into the digital signals which are converted into the protocol format communicated with the remote end by the microprocessor, so that data transmission between the transmitter and the remote end is realized; and anti-interference performance of the digital signals is larger than that of the analog signals, so that the problem of poor anti-interference performance of the analog signals output by the transmitter is solved, signal quality is improved, and performance of the transmitter is enhanced.

Description

technical field [0001] The invention relates to a transmitter, a multistage filter and a weighing system. Background technique [0002] In long-distance transmission, the anti-interference ability of analog signals is generally weaker than that of digital signals. Among analog signals, frequency signals and current signals are relatively better than voltage signals. The anti-interference ability of strong signals is stronger than that of weak signals. In the field of concrete stations, most of the existing weighing sensors are weak voltage signals, and their anti-interference ability is poor, but their real-time performance is better. [0003] Such as figure 1 The structural schematic diagram of the weighing system is shown, in which, the weighing bucket 1 mainly loads the object to be weighed; the weighing sensor 2 mainly converts the pressure into an electrical signal output, and the output signal belongs to a weak (millivolt level) voltage quantity; the signal The line ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a transmitter, a multi-stage filter and a weighing system to at least solve the problem of poor anti-interference of the analog signal output by the above-mentioned transmitter

Images