SU631913A1 - Time interval-to-binary code converter - Google Patents

Description

connected to the reference frequency generator and to the input of the stop-pulse converter.

FIG. 1 shows a functional diagram of the time interval to binary code converter; in fig. 2 - time “a diagram of the converter.

Soder converter nt trigger 1. control, generator 2 reference frequencies, element IZ, trigger 4 determine the rounding interval, trigger 5 junior and trigger 6 older information bits of the pulse counter, driver 7 pulses and element 2I-2ILI 8 of the rounding unit measurement result. The Converter operates as follows.

In the initial state on the direct outputs of the triggers 1,4,5,6 zero potential, on the inverse outputs of the triggers 1,4,5,6 unit potential, at the output of the element I 3 and the former 7 pulses the zero potential, at the output of the element 2И- 2IL 8 unit potential.

At the moment of arrival of the start-pulse synchronized with the negative front of the meander generated by the generator 2 of the reference frequency, the control trigger 1 is set to one state and opens the element 3. The reference frequency pulses produced by the generator 2, through the element 3, arrive at the counting input of the trigger 4 determine the rounding interval. Each positive front of the power inverter triggers trigger 4, and from its direct and inverse outputs the information is fed to the inputs of element 2I-2ILI 8. In the absence of a rounding pulse, information from the inverse runner trigger 4 through element 2I-2IL 8 enters the counting input of trigger 5 the low-order bit, from the output of which is passed to the counting input of the trigger 6 of the high-order bit.

If a single potential is set at the moment of arrival of a stop pulse at the inverse trigger output .4, then the output of element 2I-2ILI 8 will also have a single potential that will not change when a rounding pulse arrives from the output of the form patcher 7, which, in its the queue will not change the state of the 5 in 6 triggers.

If, at the moment of arrival of the stop pulse, a zero potential is set at the inverse output of trigger 4 and a single potential is set at the direct output of trigger 4, then zero potential will be set at the output of element 8, however, the unit potential G supplied from the direct output of trigger 4 to one of the inputs element 2I2 AND LI 8, permits the passage of a rounding pulse from the output of the former 7 through the element 2I-2ILI 8 to the counting input of the trigger.5 a younger digit, and from its output the information is transferred to the next discharge. Thus, if the moment of arrival of the stop pulse on the forward trigger of trigger 4 was set to zero potential, then a binary code will be recorded in the counter, corresponding to a time interval shorter than the measured time interval by no more than half the size of the smallest unit weight; if, at the moment of arrival of the stop pulse, a single potential was set at the direct output of trigger 4, then a binary code will be recorded in the counter corresponding to a time interval longer than the measured time interval by no more than half the size of the smallest unit weight.

Such an embodiment of the device allows, for a given number of information bits of the counter, to increase the conversion accuracy to a value not exceeding half a weight of the unit of the younger information bit of the counter.

Claims (2)

1. Author smshetelstvo USSR №434370, cl. Q 04P 11/08, 1972. . 2. USSR Two-Union Ceremony No. 434368,} lui.Q 04 F 11/08, 1972. ri