SU875451A1 - Device for registering measurement information - Google Patents

Description

(54) DEVICE FOR REGISTRATION OF MEASURING INFORMATION

This invention relates to a magnetic recording technique used in measuring and computing devices. Devices (systems) for collecting and recording data are known, containing a subsystem of sensitive elements, a subsystem of normalization and commutation, consisting of switches, amplifiers and filters, a control subsystem that includes an analog digital converter (ADC) and elements of control of the operation of switches, subsystem Registration ft. The drawback of the device is the low speed of registration of measurement information. It is also known a device for recording information containing a clock signal generator, the output of which is connected to the first inputs of the control unit and the information inputting unit, the second input of the latter is connected to the input signal bus, the charging generator connected to the second input of the control unit, to the first input of the code converter duration, and through a frequency divider with the first input of the switch, the second input of which is connected to the output of the information input unit, the third input of the switch is connected to one output of the control unit, connected Another output with the second input of the converter is the code length, with one output of the said converter connected to the third input of the control unit and the other input to the input of the recording unit 12. The device has a poor response time. The purpose of the invention is to increase the speed of the device. The goal is achieved by the fact that the device for recording measurement information. containing a clock generator, the output of which is connected to the first inputs of the control unit and the information input unit, the second input of the latter is connected to the input signal bus, the master oscillator associated with the second input of the control unit, the first input of the code-duration converter, and through a frequency divider with the first input of the switch, the second input of which is connected to the output of the information input unit, the third input of the switch is connected to one output of the control unit connected

another output with the second input of the code-duration converter, while one output of the said converter is connected to the third input of the control unit, and the other output to the input of the recording unit is equipped with a code converter and a control word driver, one input of which is connected to the first output of the switch connected by the second output to the input of the code converter, one output of the last is connected to another input of the control word generator, and the other output to the third input of the code-duration converter, with than the fourth input of the code-duration converter is associated with the first output of the control word generator, and the second output of the latter is connected to the fourth input of the switch

The drawing shows a diagram of the device.

The scheme contains a control unit 1, an information input unit 2, a switch 3 connected to the input unit 2 and a control unit 1, a clock signal generator 4, also connected to the input unit 2 and a control unit 1, a recording unit 5, a converter 6 of code length, connected with block 5 and block 1, master oscillator 7 connected to converter b and block 1, frequency divider 8 connected to master oscillator 7 and switch 3, as well as code converter 9 connected to block 3 and converter b, control word generator 10 soy connected to converters b and 9, and switch 3 and bus 11 of the input signal.

The device works as follows.

Channel codes from bus 11 and generator 4 signals through block 2 are connected in series by switch 3 to input of converter 9 of code. This block inverts all bits of each word, if in the high bit one, if the code word contains zero in the high bit, then it remains, and the content of all the other bits is inverted. The converted code words arrive at the pE) e-generator b, the code-duration. Simultaneously, from the second output of the transformer 9, the shaper 10 receives signals, which are used to form a control word containing N relay channels. Moreover, if in the information layer the most significant bit was inverted, then the corresponding one in the order of the bit of the control word is formed equal to zero. When inverting all bits except the most significant one, the corresponding word of the control word is set equal to one. After forming the control word from the second output of the Former 10 on

the fourth input of the switch 3 receives a signal from which the output of the switch 1 prevents the next code from being input to the input of the converter 9, and the output 2 of the switch sends a signal to issue the control word by the driver 10 to the converter b. The control word containing N bits goes to the converter b after the group of N information words corresponding to it.

Converter b directly converts the code information into durations of time intervals between successive voltage drops. The number of units in each word is compensated by pulses from the master oscillator 7, the frequency of which signals are higher than the frequency of generator 4. The compensation time determines the duration of the intervals into which the input codes are converted. Compensation signals are supplied to the Biv block, block 1, where, together with the signals of the generator 4 and the master oscillator 7, they are used to synchronize the operation of the compensator 3 and the converter b. The signals from oscillator 7 are divided by frequency d, frequency chopper 8 and, as reference signals, are fed through switch 3, block 9 and converter b to block 5 while there are no code words at the output of block 2 and are used to separate code words. The function of block 2 in the proposed device is to accumulate information and output it to the inputs of the switch in the sequence required for registration. In the proposed device, code information is converted in order to reduce the total time of its registration. .

A characteristic feature of measuring systems is the presence in the recorded range of signals of the section with the highest probability of occurrence of the meanings of recorded words in them.

To clarify this statement, let us consider the flow of information from the sensors having the same probability of the occurrence of any word meanings in the range of measured values. In order to increase the accuracy of measuring and recording low-level signals, they are pre-amplified, as in the case of the arrival of such signals; to the input of the ADC without prior amplification, the sampling error during the operation of the ADC will be commensurate with the value of the quantity itself, and therefore, the relative error of measurement and recording will be large.

With the gain gain linearity, the signals from its output have a uniform distribution in the range of the ADC operation, since

Claims (1)

Claim A device for recording measurement information, containing a clock signal generator, the output of which is connected to the first inputs of the control unit and the information input unit, the second input of the latter is connected to the input signal bus, the master oscillator is connected to the second input of the control unit, the code is connected to the first input of the converter - duration, and through a frequency divider with the first input of the switch, the second input of which is connected to the output of the information input unit, the third input of the switch is connected to one output of the control unit, associated with another output with a second input of the code-duration converter, while one output of the said converter is connected to the third input of the control unit, and the other output is connected to the input of the recording unit, characterized in that, in order to increase the speed of the device, it is equipped with a code converter and a shaper control word, one input of which is connected to the first output of the switch connected by the second output to the input of the code converter, one output of the latter is connected to the other input of the control a word, and another output to the third input of the code-duration converter, moreover, the fourth input of the code-duration converter is connected to the first output of the control word driver, and the second output of the latter is connected to the fourth input of the switch.