SU1180951A1 - Device for reception and transmission of signals - Google Patents

Description

The invention relates to computing and can be used for the organization of mixed communication of information transfer between blocks and nodes of analog-digital control digital computers.

The purpose of the invention is to expand the scope of the device by; the ability to receive and transmit analog signals.

The drawing shows a functional diagram of the device.

The device contains on each transceiver side 1 a transmitter 2 and a receiver 3. In turn, the transducer 5, the sensor 2 contains a matching amplifier 4, - the first voltage converter is the current 5 ,. divider 6 voltage into two, the second converter 7 voltage - current and the amplifier-limiter 8. Receiver 3. contains the source 9 of the reference voltage, the first current switch 11, the subtractor 12 current 12, the current multiplier 13 into two and the converter 14 current - voltage. Receiver 3 and transmitter 2 have pins 15 and 16, the transmitter output is connected to communication line-17.

The device works as follows.

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When the signal _Rin and at terminal 15 is converted matching amplifier 4 to a new potential since agreed with the input ·. characteristics of transmitter units. Then the first converter 5 has a potential signal with an amplitude value and converts it into an equivalent current signal with an amplitude value of 7 and forms it on line 17, and converter 7 converts a potential signal at the output of divider 6 with an amplitude value of C / 2 into an equivalent current signal with an amplitude value 3/2.

The amplifier-limiter 8 must always be in one of two states. If there is an input signal at pin 15 at the output of the amplifier-limiter 8 is present

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logical unit, and in the absence of an input signal - a logical zero. The potential level of the logical unit should be chosen slightly higher than the potential level of the source 9 of the reference voltage to exclude the possibility of simultaneous operation of the keys 10 and 11, Under this condition, the keys 10 / and 11 of the transmitting side are closed, / and on the receiving side the key 10 is open and the key is 11 . In this case, the output current of the transmitting side enters through line 17 and the key 10; to the input of the transducer 14 of the receiving side and is converted to voltage. In the case of simultaneous operation of both transceiver sides, their transmitters 2 form, on the opposite ends of the communication line 17, simultaneously two current signals with levels 3 and 5 ₂ . Moreover, when transmitting pulsed signals, these levels should be equal, and when transmitting analog signals, these levels are generally not equal.

At the initial moment, when the sum of currents X reaches the line 17, and 3 ₂ keys 10 and 11 of both sides are closed and the potential level in line 17 begins to increase. When it reaches and exceeds the value equal to the value of the potential level of source 9, the keys 11 of both sides open, and the key 10 remains closed. As a result, the total current Σ7 = 3 | + X ₂ circulating in line 17, is split into two equal parts, each of which is supplied through the switches 11 to the inputs of a subtractor 12 on both sides, on the other subtracter 12 inputs present output currents of the converters 7 with values and 3 _2/2, respectively, for the first and second sides. As a result of the subtraction operation we obtain difference currents and 3 _2/2 Accordingly the first and second sides. After multiplying and subsequent conversion of the resulting current signal at the terminals 16, the original signal of the corresponding side is present.

1180951

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Claims (2)

DEVICE FOR RECEPTION AND TRANSFER OF SIGNALS? a transmitter on each transceiver side, a receiver containing a voltage source, the output of which is connected to the first input of a current switch, to the second input of which a communication line is connected, which is so as to expand the field of application of the device and transmission of analog signals, in it each transmitter contains a matching amplifier, a voltage divider by two, a limiting amplifier, the first and second converters are voltage to current, the output of the matching will amplify For connected to the inputs of a voltage divider for two, the first voltage-current converter and the amplifier of the limiter, the output of the voltage divider for two is connected to the input of the second converter voltage-current, a current subtractor, a current multiplier for two, a second current switch, the output of the first current switch is connected to the first input of the current subtractor, the output of which through the current multiplier is connected to the first input of the current-voltage converter, the output of which is connected to the second input current key, the output of the matching amplifier of the transmitter is the device input, the output of the first converter voltage is connected to the communication line and the first input of the second current switch key, the outputs of the amplifier-limiter and the second voltage converter are the transmitter current connected to the second inputs of the second current switch receiver, the converter output current is the voltage of the receiver is the output of the device, 13 one 1180951 2