SU824180A1 - Information registering device - Google Patents

Description

(54) DEVICE FOR REGISTRATION OF INFORMATION

one

The invention relates to automation and computing and is intended to record information.

A device for recording information is known, which contains an analog-digital converter, a switch, a control unit, a recorder 1.

The closest technical solution to the present invention is a device for recording information containing a series-connected switchboard, an analog-to-digital converter and recorder, a pulse distributor, a driver of the polling periods of the channels 2.

The disadvantage of both devices is low speed.

The purpose of the invention is to increase the speed of the device.

Supposedly, this goal is achieved by the fact that the device contains a channel connection control unit and a channel selection permission unit, some inputs of which are connected to the device inputs and the first inputs of the channel connection control unit, and other inputs to the output of the channel sampling period generator.

the second inputs of the channel connection control unit and the first input of the pulse distributor, the output with the third input of the channel connection control unit, the fourth inputs of which are connected to the outputs of the pulse distributor J, the first output to the second input of the pulse distributor, the second outputs to the inputs of the switch, and the fact that the channel connection control block contains, by the number of channels, the first element AND, the first trigger and the second element AND, and the element AND, the outputs of the third element AND are connected in series with the inputs of the first OR element, and finally the fact that the channel selection permission block contains the second OR element, the second trigger, the fourth AND element and the comparison block, the other input of which is connected to the output of the fifth AND element, the first input of which is connected to another input fourth element and

0 and the first input of the third element OR, the second input - with the first output of the register, the second output of which is connected to the second input of the third element OR, the output of which is connected to the first input of the register.

The second input of which is connected to the output of the second trigger.

FIG. 1 shows a block diagram of the device; in fig. 2 - functional diagram of the channel connection control unit; in fig. 3 - functional diagram of the channel selection block; in fig. 4 is an example of a timing diagram of the operation of the device.

The device contains switch 1, analog-digital converter 2, recorder 3, channel connection control unit 4, pulse distributor 5, channel selection resolution unit 6, driver 7, channel polling period pulses, second element AND 8, first element OR 9, first element And 10, the first trigger 11, the third element AND 12, the second element OR 13, the second trigger 14, the fourth element AND 15, the comparison block 16, the third element OR 17, the register 18, the fifth element AND 19.

The device works as follows.

In the pulse shaper of the polling periods of the channels 7, the operator sets the polling periods of the analog signals to the switch 1.

The pulses corresponding to the dialed channel polling periods are sent to the channel selection permission unit 6 and to the channel connection control unit 4.

The channel selection permission unit 6 analyzes the specified polling periods of the channels and selects the shortest period of them. In addition, according to the request for service, it calculates the time resource of the registrar required at the moment.

In the absence of a registrar overload, the block of selection resolution 6, channels generates a resolution signal, which is fed to the channel connection control unit 4. In this case, all input channels that set the signal are served by the recorder.

If the appearance of a service request signal from a new source of information leads to a registrar overload, then the output of block 6 of the resolution of channel selection does not allow the signal. As a result, the channel is not served by the recorder.

When the registrar refuses to service a new source of information, there is no loss of information, since the analysis of the condition for the absence of overload is carried out even before the start of the experiment.

The clock pulses arriving at p; the distributor of 5 pulses from the driver 7 pulses of polling channels alternately generate signals at the outputs of the distributor of 5 pulses, which correspond to the input channels of the recorder. In this case, the block 4 of the control of connecting channels for each clock pulse analyzes the coincidence of two conditions - the expiration of the polling period specified for this channel and the presence of a service request that received permission from

block 6 permit channel selection. If both conditions are present, the channel connection control unit 4 generates the corresponding channel connection signal to the switch 1. At the same time, the analog input signal of this channel is converted by the analog-digital converter 2 into a digital code and fed to the recorder 3.

If the first of the analyzed ones is missing, the channel connection control unit 4 does not issue a signal to switch 1 and this channel is not polled during this cycle.

If the second of the analyzed ones is missing, the channel connection control block 4 generates a signal arriving at the distributor 5 pulses, which performs an extraordinary switching of the channel connection control unit 4 to check the connection conditions of the next channel.

The channel selection permission unit 6 operates as follows.

The pulses corresponding to the polling periods of the channels making requests are sent to the second element OR 13, at the output of which the series of pulses has a period of TMHH (Fig. 4). These pulses are fed to the counting input of the second trigger controlling the fourth element and 15, to the second input of which the clock pulses arrive. In this case, the output of the latter during the resolution intervals

time will be the number of pulses corresponding to the number of recording information that is performed in time. These pulses are received at comparison unit 16, the second input of which is received

impulses that determine the required registrar resource for a given number of service requests.

To calculate the required resource of the register, service request signals from the request buses at the moment the second trigger 14 transitions from the zero state to the unit one are entered into the register 18, to the control input of which through the third element OR 17 clock pulses are received. When the code entered in register 18 is shifted to the right, at each clock cycle, at its direct output, single and zero levels are generated that control the operation of the And 19 element of the element. If at the register 18 output in this cycle the unit level, the fifth And 19 element opens and the pulse passes to block 16 of the comparison. If at the output of register 18 in this clock cycle there is a zero level, then the fifth element of And 19 does not allow the clock pulse to pass. With

This is due to feedback from the inverse output of the register 18 in the latter an extraordinary shift of the code.

The output pulses of the AND element 19 for the example shown in FIG. 4, correspond to three cases; the number m of service requests is equal to “4,” 5 and “8, respectively. In the first two cases, the recorder does not overload, therefore, at the output of block 16, resolution pulses are generated, in the third case (m 8), resolution pulses are not generated.

The channel connection control unit 4 operates as follows.

The service request signals arrive at the first inputs of the first And 10 elements. When the resolution pulse channel selection arrives from block 6, the first And 10 elements open and the request signals are recorded into the first triggers 11.

From the outputs of the latter, the service request signals are sent to the elements of AND 12. The second inputs of the last receive pulses of specified channel survey periods, and the third inputs receive pulses from the distributor of 5 pulses.

When a corresponding pulse arrives from the distributor 5 pulses per element I 12 corresponding to the first channel of the device, the presence of the service request signal of this channel (from the output of the corresponding trigger 11) and the end signal of the specified polling period of the first channel are checked. In the presence of permissive signals at the inputs of the third element I 12, at its output a turn-on signal of the first channel is produced, which is fed to the switch 1.

The third elements AND 12 other channels work in the same way. From the outputs of the elements, the signal also enters the first element OR 9. At the same time, the specified signal from the output of the latter arrives at the distributor 5 pulses and performs an extraordinary switching of the distributor of pulses to the next channel.

Thus, the speed of the device is improved and the registration of redundant information is eliminated.

Claims (3)

1. A device for recording information containing a series-connected switch, an analog-to-digital converter and a recorder, a pulse distributor, a driver for polling channel polling periods, characterized in that, in order to improve the speed of the device, it contains a channel connection control unit and a channel selection resolution unit , one of the inputs of which are connected to the inputs of the device and the first inputs of the control unit connecting the channels, the other inputs - with the outputs of the pulse shaper periodo 5 polling channels, the second inputs of the channel connection control unit and the first input of the pulse distributor, the output with the third input of the channel connection control unit, the fourth inputs of which are connected to the outputs of the pulse distributor, the first output to the second input of the pulse distributor, the second outputs to the inputs of the switch. 2. The device according to claim 1, characterized in that the connection management of the channels comprises, by the number of channels, in series 5 connected the first element And, the first trigger and the second element And, and the third element And, the outputs of the third element And connected to the inputs of the first element OR. 3. The device according to claim 2, characterized in that 0 the channel selection permission block comprises a second OR element, a second trigger, a fourth AND element and a comparison block, the other input of which is connected to the output of the fifth AND element, the first input of which is connected to 5 with another input of the fourth element AND and the first input of the third element OR, the second input with the first output of the register, the second output of which is connected to the second input of the third OR element, the output of which is connected to the first input of the register, the second input of which is connected to the output of the second trigger. Sources of information taken into account in the examination 1. Author's certificate of the USSR 5 No. 444185, cl. G 06 F 11/00, 1972. 2. USSR author's certificate number 402865, cl. G 06 F 3/00, 1971. Analog signals To switch / (