SU1042009A1 - Device for input analog values in digital computer - Google Patents

Description

The invention relates to information and measuring systems and is intended for input of analog type signals into digital computers. A device is known which contains an analog-to-digital converter, a digital register and a device for controlling recording equipment 1. The disadvantage of this device is the lack of information output directly on the digital computers and, as a result, the low system performance and the under-utilization of the capabilities of modern measuring devices. Closest to the invention is an input device containing a measured value converter into a digital code, a digital register, three AND elements, two signal conditioners, a switch, a gate pulse generator, a group of elements, a group of OR elements, and the outputs of the measured converter are ranks in a digital code connected to the first. shaper and digital register, the first output of which is connected to the first input of a group of elements and the second input of which receives signals from the first output of the switch, and its second output is connected to the first input of the AND element, the output of which is connected to the input of a group of elements OR, The reset signal is applied to the second input of the second signal conditioner, the output of which is connected to the second input of switch 2. The device’s disadvantage is low speed due to the fact that the new conversion cycle starts only after reading the last one bit of the information. The purpose of the invention is to increase speed. The goal is achieved in that the device for inputting analog values into a digital computer contains an analog-to-digital converter whose information input is the information input of the device, the register of the information input of which is combined with the information output of the analog-digital converter, the switch whose first output is connected to the first input elements AND groups, three impulse generators, three AND elements and a group of OR elements, and the indicative output of the analog-digital converter the caller is connected to the input of the first pulse generator, the second output of the switch connectors to the first input of the first element and whose output is connected to the first inputs of the OR group, the output of the second pulse shaper is connected to the installation input of the switch and the register output is connected to the second inputs of the And group elements, a pulse generator and a NOT element are entered, the control input of the device is connected to the trigger input of the generator, pulses, the output of which is connected to the gate input of the analog digital signal the driver, the outputs of the first and third pulse formers through the second element And are connected to the trigger input of the switch, the second output of which is connected to the first input of the third element AND, the output of elements AND group and the third element And connected respectively to the second and third inputs of the elements OR group, indicative output the register is connected to the second input of the third element And through the element NOT to the second input of the first element And, the output of the third element And is connected to the RCM of the second pulse generator, and the outputs The combo OR OR groups and the input of the third pulse generator are respectively the information output and the clocking input of the device. Figure 1 shows the structural scheme of the device, and phi1.2 shows the time diagram of its operation. The input device contains a pulse generator 1, analog-to-digital converter 2, register 3, element AND 4, switch 5, group of elements AND 6, element AND 7, element NOT 8, element And 9, group of elements OR 10, three pulse formers 11- 13. Position 14 marked digital computers. The device works as follows: In the initial state, the pulse generator 1, the converter 2, the commutator 5, the digital computer 14 is in the zero state. Elements And 4, 7, 9 and a group of elements And b closed. On command Start, the DVR 14 and the pulse shaper 12 produce the first TI pulse generator, and the first pulse generator 1, the TI pulse, which the converter 2 starts to operate on. The TI clock frequency from the generator 1 is determined by the speed of operation of the converter 2.. The following condition, in which the period of the following pulses of the TI must be no less than the time of one conversion cycle, is necessary. This condition does not include the value of the read time of the digital computer 14. information from register 3. Thus, the information is read while the measured value is being converted into a digital code in converter 2. After the conversion from converter 2 is completed, the first input of the AND element 4 through the pulse shaper 11, a code readiness signal (SGK) is received, and the first strobe jiM Pulse TI is received at the second input of the element and 4. If they match, the switch, 5 opens a group of AND elements to pass the first bit of information. Then the information passes through the group of elements OR 10 to the selector input of the digital computer, the response from the digital computer 14 through the pulse shaper 12 and through the open element I 4 to the switch receives the second strobe pulse TI, which allows the second bit to pass through the groups of elements And and OR 10 MA DVI 14. Thus, the information passes on the discharge in the DVR 14 N times. With the arrival (I-1) of the TI2 strobe pulse from the digital computer 14, the output of the switch 5 is connected to the first inputs of the elements 1.9, the second inputs of which receive the signal Q end of operation (CKP) from register 3. In the absence of this signal, the element I 9, since at the output of the element is NOT 8, a signal allowing the passage is passed. Then from the output of the element AND 9 to the input of the group of elements OR 10 passes the code Space. Element and 7 is closed at this point. By (N-g) a strobe pulse with a digital computer 14, register 3 reads the first bit from the second group of information (the second group of information is the result of the second cycle of converting the measured value to a digital code and entering it into register 3). This continues until the M information groups are read. When the strobe-pulse of the M-th group of information appears (N +1), the end of work signal will be sent to the input of the group of elements OR 10 through the element I 7 n. In this case, the device returns to its original state and is prepared for the next cycle of operation. due to the application of the invention, the reading of information from the register occurs at the time when the next group of information in the converter is converted, i.e. On the readout of information from the register, time is practically not wasted, thereby increasing the speed of the device.

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Claims (1)

(541 DEVICE FOR ENTERING ANALOGUE VALUES IN A DIGITAL COMPUTER MACHINE, containing an analog-to-digital converter, the information input of which is an infor- mation; - the device’s mating input, a register, the information input of which is connected to the information output of an analog-to-digital converter, a switch, the first output of which is> connected to the first input of the AND elements of the group, three pulse shapers, three I elements and a group of OR elements, and the characteristic output is an analog © - '' of the digital converter is connected to the input of the first pulse shaper, the second output of the switch is connected to the first input of the first AND element, the output of which is connected to the first inputs of the elements OR groups, the output is W The pulse shaper is connected to the installation input of the switch, and the output of the register is connected to the second inputs of the elements of the AND group, which is related to the fact that, in order to increase the speed, it contains a pulse generator and an element NOT, moreover, the control input of the device connected to the triggering input of the pulse generator, the output of which is connected to the gate input of the analog-to-digital converter, the outputs of the first and third pulse formers through? the second AND element is connected to the triggering input of the switch, the second output of which is connected to the first input of the third AND element, the outputs of the AND elements of the group and the output of the third AND element are connected respectively to the second and third inputs of the OR elements of the group, the sign output of the register is connected to the second input of the third element And and through the element NOT with the second input of the first element And, the output of the third element And is connected ": with the input of the second pulse shaper, and the outputs of the elements OR groups and the input of the third pulse shaper are according to the information output and the timing input of the device.