SU781826A1 - Device for processing metrological information - Google Patents

Description

the keys to the first ECU of the elements AND, the second inputs of which are connected to the second output of the time sensor, the outputs of the elements AND are connected to the information input of the processor / control and whose information outputs are connected respectively to the control input of the switch and to the input of the print unit with the second inputs of the time sensor and converters the number of pulses, the second output of the time sensor is connected to the third inputs of the converters the number of pulses-code,

Due to this, it is not necessary to bring the output frequency signals of different dynamic range of the flow meters to one dynamic range of the converter, thereby reducing the error in converting the flow rate value into a digital code by the error value of converting analog values to the same dynamic range of the converter.

All converters are connected to each other and to the processor. Due to this, a measurement interval is simultaneously provided that is equal for all values, thereby reducing the error. measurement of the variable values of the associated functionally in time.

The drawing shows a diagram of the device.

The device contains flow meters 1, converters 2 number of pulses code, time sensor 3, switch 4, encoder 5, element 1l b, processor If block 8 printing, input 9 devices

The device works as follows.

From the beginning of the measurement cycle from the processor 7, the Start command comes. On the converters 2 is the number of pulses and, on the sensor .3 time. The signal / ш from each flow meter 1 is fed to the converters 2 by the number of pulses. At the end of the measurement time from the output of the sensor 3, time to the input of the processor, to the inputs of the converter 2 the number of pulses-code and the inputs of the elements And 6 receives a Stop signal.

From the output of processor 7, the program receives signals to the control input of switch 4. Information is transmitted sequentially from each converter 2, the number of pulses through a switch 4 to an encoder 5, where

converted to a standard processor form and stored in the memory cells of the processor. The signal of the end of the measurement is supplied to the sensor 3 times, which controls the operation

Pulse-code converters

2

The required number of flowmeters polled and the polling sequence is set by the program. Data from the processor 7 is received at block 8 of the print.

The use of the device will improve the accuracy in measuring the parameters of processes that are functionally related in time.

Claims (2)

1. Author's testimony of the USSR W 442481, cl. G 08 F 15/46, 1972. 2.Hetch R. Expansion of the functionality of the digital multimeter using a microprocessor. - Electronics, 1976, 19, p. 35 (prototype).