| 摘要 |
The invention concerns an arrangement for determination and digital reproduction of the value of an analogue signal in the steady state, for example, in conjunction with measurement of the temperature of a steel melt. An analogue-digital converter 1 converts the analogue measurement signal into a digital number-pulse code and is connected via a synchronisation unit 3 to the inputs of at least two threshold counters 4, 5. A clock pulse generator, timing pulse generator, 2 is connected via the synchronisation unit to the inputs of the threshold counters and those of a time interval discriminator 8 and are connected via a half-frequency divider 21 to the inputs of a reversible counter 9. A digital number display unit 10 is connected to the digital output of the reversible counter. The arrangement according to the invention further includes decoders 6, 7 for decoding the zero state of the threshold counters, wherein the inputs of the decoders are connected each to their own threshold counter and the outputs of the decoders are connected to the subtraction count-blocking inputs of the respective counters, to the input of the reversible counter, and to a control input of the number display unit. The threshold counters 4, 5 have overflow outputs, which are connected to inputs 37, 43 for pre-setting of said discriminator 8, whose information output is connected via gates 11, 14 to an input of the discriminator and it is also connected to the inputs of the threshold counters and the reversible counter and to the control input of the number display unit. The arrangement also includes six AND-gates 14-20 and three NOT-gates 11-13 for logic control of the electrical communication between said component parts of the arrangement, wherein the gates mentioned further above are part of these ten gates. <IMAGE> |
