SU137139A1 - Method of receiving inductive signals - Google Patents

Description

Methods are known for receiving inductive signals consisting of two pulses, based on the use of two-position relays. Due to the small number of pulses, the reliability of transmission at long ranges decreases. The need to comply with rigid time regimes complicates the design of receiving devices:

In the proposed method, in order to increase the range of signal transmission, eliminate the need to observe rigid time modes and increase the reliability of transmission, the reception of inductive signals, characterized by the number of consecutive pulses of opposite polarity and polarity of the first pulse, is performed using a three-position relay .

To clarify the described method, the figure shows an inductive signal receiver with a three-position relay.

The polarized relay winding / is connected to the communication line through the JJ line transformer 2. When a negative pulse arrives, the relay / flushes the pin 5 to pin 4, causing the capacitor 5 to charge and the relay 6 to be activated which contacts 7 to close the relay circuit 8; thus, it is noted that the first negative impulse came from the line. After de-energizing the relay 6, the relay 5 is slowly released. If during the release time of the relay 8 a second impulse of opposite polarity arrived from the line, the relay / kicks 3 to contact 9. At the same time, the capacitor 10 is charged and the relay 11 is activated. Contact 12 of the same relay The relay circuit 13 closes, which, through its contacts 14 and 15, provides additional power to the relay 8 and the latter keeps its measles in an attenuated state. After de-energizing the relay, // slowly releases the relay. 13. During the release time of the relay 13, a second negative pulse comes in and the relay 6 is again triggered. At the same time, contact 13 of relay 6 and end 137139-2 time 17 of relay 13 energizes relay 13 keeps your measles; working contacts 18, 19 and 20 will be closed. At the same time, relay 21 is triggered, marking the reception of a negative pulse. After switching off the relay 6, the relay 8 receives power. If the next pulse does not arrive during the release of the core 8 relay, this will mean that the first signal has been received from the line. After releasing the relay 13 through the contacts 22-24 and 25, the fixed signal will be transmitted to P, the executive device. If during the release time of the relay 13 a second positive signal is received, then via working contacts 2 and 27 it will be transmitted to the executive device. After the relay is turned off, the switch releases the switch 13 and the power is turned off from the relay 8. The relay 8 releases and the relay 21 turns off, after which the receiver returns to its original position. If a positive pulse arrives from the line, then relay 11 will first operate, and then relay 13. When a negative pulse arrives, relay 6 is activated, and relay 8 remains on. Thus, the inclusion of the relay 13 in the off position of the relay 8 indicates that a positive impulse was received first from the line. Through contacts 28, 19, 29 30 ъ the executive device receives the third signal. After releasing, relay 6 slowly releases relay 13, and the receiver returns to its original position. By appropriate switching of the main five relays of the receiver, various combinations of signals can be obtained.

Subject invention

A method with inductive signals, characterized in that. that, in order to increase the range of signal transmission, eliminate the need to observe rigid time modes and increase the reliability of transmission, the reception of inductive signals, characterized by the number of consecutive pulses of opposite polarity and polarity of the first pulse, is performed using a three-position relay.