SU913605A1 - Optronic device for transmitting analogue signals - Google Patents

Description

The invention relates to electrical communication technology and can be used to transmit analog signals over long distances.

An optoelectronic device for transmitting analog signals, containing a series-connected sensor, an inverter and a switch, is known, the output of the signal sensor is connected to the second input of the switch and to the input of the negative polarity marker generation unit, the output of which is connected via a series-connected analog adder, radiation source, optical communication channel and photodetector connected to the input of the amplitude selector, as well as the block of generation of interval markers connected to the second input of the analog adder, stable reference voltage isolator connected to the control input of the negative polarity marker generation unit and the input of the first switch, the other input of which is connected to the switch output [1].

However, this device has insufficient reliability of the transmitted message.

The purpose of the invention is to increase the reliability of the transmitted message.

The goal is achieved

5 in that in an optoelectronic device for transmitting analog signals containing serially connected sensor signals, an inverter and a switch, the sensor output signal is connected to the second input of the switch and to the input of the negative polarity marker generating unit, the output of which is through a series-connected analog adder,

. a radiation source, an optical communication channel and a photodetector are connected to the input of the amplitude selector, as well as an interval marker generation unit connected to the second input of an analog adder, a stabilizer of the reference voltage connected to the control input of the negative marker generation unit and the other input connected with exit

25 of the switch, entered in series are the peak detector, the input of which is connected to the switch output, the second comparator and the OR element connected to the input of the unit

’Θ generation of marker spacings, to 913605

Consequently, the connected trigger, whose input is connected to the output of the first comparator and the generator of linearly varying voltage, the output of which is connected respectively to the second input of the second comparator 5 and the second input of the trigger, the input of the generator of linearly varying voltage is connected to the output of the stabilizer of the reference voltage, connected in series differential block the input of which is connected to the output of the switch and the third switch whose control input is connected to the output of the stabilizer reference voltage zheniya, output - to the second input of OR gate 15, flip-flop output being connected to the control input of the second comparator.

The drawing shows a structural electrical circuit of the device. ^ 0 The device contains a sensor 1 signal, an inverter 2, a switch 3, a unit 4 for generating a negative polarity marker, a peak detector 5, a comparator b, a differentiation unit 7 25, a comparator 8, a trigger 9, a stabilizer, 10 reference voltage, a generator 11 linearly variable voltage, comparator 12, element OR 13, block 14 of generation of interval markers, analog adder 15, radiation source 16, optical channel 17, photodetector 18 and amplitude selector 19.

The device works as follows. 55

The electrical signal from sensor 1 is fed to inverter 2 and switch 3. If the signal is of negative polarity, then it is inverted, and block 4 produces a signal - a marker 40 of negative polarity. The signal from sensor 1 and its inverse value from inverter 2 are fed to the input of switch 3, which passes the signal of only positive polarity. 45 This signal simultaneously arrives at the peak detector 5, comparator 6, where it is compared with a predetermined level, but higher than the noise level, and at block 7. From the output 59 of block 7, the signal arrives at the input of the comparator 8, where the signal is compared to predetermined level, but higher than the noise level.

At the output of the comparator 8 there is a 55 signal, the duration of which is equal to the duration of the front of the signal from sensor 1. At the output of the comparator b there is a signal whose duration is equal to the duration of the signal from sensor 1, this signal is fed to the input of trigger 9, which is thrown over the trailing edge of the input signal. The output signal from the output of the trigger 9 simultaneously at the comparator>, 12 and the generator 11.. 65

In the initial state, the comparator 12 is closed at the gate input, i.e. regardless of the state at its inputs. With the arrival at the strobe input of the comparator 12, the signal from the output of the trigger 9, it opens and the comparator starts working in the comparison mode. The signal from the output of the trigger 9 starts the generator 11,

(which produces a single signal from the zero level to the level of the reference source of the stabilizer 10. This signal is compared in the comparator 12 with the output signal of the peak detector 5. when the comparator 12 opens with a gate signal from the output of the trigger 9, the comparator produces the level of the logical unit, since the signal level is the output of the peak detector 5 is greater than the signal level from the output of the generator 11. At the moment when the signal level from the generator is 11, the signal level from detector 5 is exceeded, the comparator 12 generates a logic zero level i.e., at the output of comparator 12, a signal is generated, the duration of which is proportional to the maximum voltage of the signal from sensor 1. The output signal of comparator 12 and the output signal of comparator 8 arrive at the OR 13 element, from which output the signal goes to block 14 of the interval marker generation , at the output of which markers appear, which, in turn, arrive at the first input of the analog adder 15.

The second input of the analog adder 15 receives a signal from the output of the block 4 to generate a negative polarity marker. The adder 15 produces analog addition of signal sequences from the output of block 4 and block 14. At the output of adder 15, a current amplifier is installed that produces a current of a corresponding magnitude, which is the pump current for source 16. As a result, source 16 emits light pulses of different power that are transmitted through the channel 17. In the photodetector 18, light signals are converted into electric signals of various amplitudes, which are selected by an amplitude selector 19. At the output of the selector 19, they have information about polarity, durability spine, the front and the maximum amplitude of the analog signal from the output of the sensor 1.

Thus, the advantage of the proposed device is to improve the reliability of the transmitted information and simplify operation.

Claims (1)

Claim Optoelectronic device for Analog signal transmission, content 913605 Signal sensor connected in series, inverter and switch, signal sensor output is connected to the second switch input and to the input of the negative polarity marker generation unit, the output of which is 5 through a series-connected analog adder, radiation source, optical link and photoreceiver connected to the amplitude selector input, as well as an output unit of 10 xi interval markers, connected to the second input of an analog souleator, a voltage stabilizer connected to the control input of the block and generating a negative marker, 5 polarity and the input of the first comparator, the other input of which is connected to the switch output, which in order to increase the reliability of the transmitted message, the sequentially connected peak detector, the input connected to output switch, the second comparator and the OR element connected to the input-s the interval marker generation unit, sequentially connected trigger, whose input is connected to the output of the first comparator, and the generator of linearly varying voltage, the output of which is connected respectively to the second input of the second comparator and the second input of the trigger, connected to the output of the voltage regulator, sequentially connected differentiation unit, the input of which is connected to the switch output, and a third comparator, the control input of which is connected output reference voltage stabilizer, the output - to the second input of the OR gate, the flip-flop output being connected to the control input of the second comparator.