This paper provides the mechanical structure graph and the counting circuit structure graph of this system, and verifies that the pills counting precision has reached one millionth of the qualified bottles in the automatic packaging line.
Various automatic control circuits such as eyespot detection circuit,pulse formation and count circuit,paper feed motor control circuit, bias correction circuit and setting circuit frequently used in trademark production are described.
According to subject study, control circuit with MCU AT89C51 as a core, pulse sending circuit, pulse receiving circuit, counter circuit, temperature measurement circuit, data displaying circuit are designed;
In the system, the sigle chip EPF10K10 (FPGA)is used to complete the design of grating scale signal processing unit. The unit consists of some function units such as four folds subdivision direction judegment circuit of X and Y directions, 18 bits counter circuit, latch interface circuit, address decode circuit and bus interface.
The output step change characteristics of various flipflops are studied,a united step change equation of flipflops is established, and the principles and methods for the design of parallel and serial counting circuits are simplified and identified.
The results of this study indicate that in terms of efficiency, the Packard 2250Ca liquid scintillation spectrometer is sensitive to the scintillation cocktail employed for241Pu analysis, particularly when the burst counting circuit is enabled.
By the use of a photoelectric pickup and an electronic counting circuit, the instrument which has been described allows one to measure infrasonic damped oscillations with great accuracy.
A counting circuit, pulse/delay generator and waveform generator are used to synchronize the PIV system and the drop ejection process.
Changes were also made in the electronic counting circuit to enable a determination of ion intensities at high count rates.
Unlike encoders that require a counting circuit to track position, absolute encoders provide the correct data after a power-down event.