KR960009092Y1 - Ring generator for an electronic switching exchanger - Google Patents

Abstract

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Description

Redundant switching circuit of ring generator for electronic exchange

1 is a configuration diagram of a redundant switching circuit of a ring generator for an electronic exchange according to the present invention.

* Explanation of symbols for main parts of the drawings

1,11: F / F detector 2,12,22,32: delay and comparison unit

3,13: main ring drive unit 4,14: auxiliary ring drive unit

5,15: Questionnaire 6,16: Inverter

Ry ₁ to Ry ₄ : Relay 10: Board A

20: Board B

The present invention relates to a redundant switching circuit of a ring generator for an electronic exchange, and in particular, to repair an error after being redundantly duplicated due to an error on the internal system side to prevent an instant ring signal output short circuit during normal operation. It relates to a redundant switching circuit of a ring generator for an electron exchanger.

In the conventional active / standby redundant redundant ring board, the board A and the board B cannot supply the ring to different loads and are composed of the main board operated in the active state and the subload operated in the redundant switching standby state. Due to the board bloating the system and the different schemes for dual active switching, it is not applicable to the redundant circuit of il load balancing system.

The present invention was devised in view of the above-mentioned problems. If an error occurs in the system while each board is operating a separate load, the system transfers the load through adjacent boards to promote the normal operation of the system and maintain the system in which the error occurs. Its purpose is to improve the reliability of the product by preventing collision between the load output from the adjacent board and the load output from the main board when it is normally operated after repair.

In order to achieve the above object, the present invention, in the redundant switching circuit of the ring generator, the first and second F / F detector (1) for detecting the F / F alarm supplied from the stem and outputs a corresponding signal ( 11) and: the first delay and comparison unit (2) for comparing the signal supplied from the first F / F detector (1) by a predetermined time and comparing it with the reference voltage (2) and from the first delay and comparison unit (2) A first main ring driver 3 for supplying a control signal to the first relay Ry1 in order to send a ring output to an A load according to the supplied signal; and a signal supplied from the second F / F detector 1 The first inverter (6) and the second delay and the comparison unit 12 for comparing the reference voltage after delaying the signal supplied from the first inverter (6) by a predetermined time, and: The second delay and comparison A first end gate 5 for logically computing the signal supplied from the unit 12 and the self-diagnosis signal: A first auxiliary ring driver 4 for supplying a control signal to the second relay Ry2 side to send a ring output to the B load in a redundant transfer according to the signal supplied from the gate 5: the second F / F A third delay and comparison unit 22 for delaying a signal supplied from the detection unit 11 by a predetermined time and comparing it with a reference voltage; A second main ring driver 13 for supplying a control signal to the third relay Ry3 to send a ring output to the B load according to the signal supplied from the third delay and comparator 22; The second inverter 16 for inverting the signal supplied from the F / F detector 1 and the fourth delay and comparison unit for delaying the signal supplied from the second inverter 16 for a predetermined time and comparing it with the reference voltage. (32) and: the second and gate 15 for arithmetic operation of the signal supplied from the fourth delay and comparison unit 32 and the self-diagnosis signal; and: according to the signal supplied from the second and gate 15 The redundant switching circuit of the ring generator for an electron exchanger is provided with a second auxiliary ring driver (14) for supplying a control signal to the fourth relay (Ry4) side to send the ring output to the A load during the redundant switching. do.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

1 is a configuration diagram of a redundant switching circuit of a ring generator for an electronic exchange according to the present invention. As can be seen in the drawings, the present invention is made with a board A 10 and a board B 20. Board A 10 includes an F / F detector 1, a delay and comparator 2, 12, a main ring driver 3, an auxiliary ring driver 4, an end gate 5, an inverter 6 and a relay. (R ₁ , R ₂ ), the board B 20 is the F / F detection unit 11, delay and comparison unit 22, 32, main ring driver 13, auxiliary ring driver 14, The AND gate 15, the inverter 16, and the relays Ry ₃ and Ry ₄ are provided.

The F / F detectors 1 and 11 detect the F / F alarm on the system side. Delay and comparison section ( ₂ , ₁₂ , ₂₂ , 32) is composed of a resistor (R ₁ , R ₁ ', R ₅ , R ₅ ') and a capacitor (C ₁ , C ₁ ', C ₂ , C ₂ ') It is equipped with delay element and comparator (U ₁ , U ₁ ', U ₂ , U ₂ ') and board A is repaired and transferred due to error occurrence detection in board A. After the operation, when the ring output of board A is supplied to load A, there is a delay time to eliminate the collision with the ring output of board B, which has been distributed from board B. The main ring driving units ₃ and 13 supply the driving signals to the relays R ₁ and R ₃ when the signal for the ring generation is provided from the F / F detection units ₁ and 11. The inverters 6 and 16 invert the signals supplied when the F / F detectors 1 and 11 detect the F / F alarm on the system side of the board and supply the corresponding signal. The AND gates 5 and 15 perform a logical operation on the self-diagnosis signal of the board and the signals supplied from the delay and comparators 12 and 32 and supply them to the auxiliary ring driver 4 and 14. The auxiliary ring driving units 4 and 14 are driven in accordance with signals supplied from the AND gates 5 and 15.

Referring to the redundant transfer operation of the present invention configured as described above are as follows.

In the normal case in which there is no detection of a F / F alarm from the board internal system, the F / F detector 1 of the board A 10 passes through the resistor R ₁ of the delay and comparator 2. The reference voltage is set by the supply voltage (V) and the distribution resistors (R ₂ , R ₃ ) to supply a high signal to the non-inverting terminal (+) of the comparator (U ₁ ) connected to the inverting terminal (-) and at the same time the board B ( 20 is supplied to the inverter 116, and the F / F detector 11 of the board B 20 supplies the supply voltage V and the distribution resistor through the resistor R ₁ ′ of the delay and comparator 22. The reference voltage is set to (R ₂ ', R ₃ ') to supply the high signal to the non-inverting terminal (+) of the comparator (U ₁ ') connected to the inverting terminal (-) and at the same time, the inverter on the board A (10) side. It supplies to (6). At this time, the comparison ratios U ₁ and U ₁ ′ of the delay and comparator 2 and 22 compare the supplied signal with the reference voltage and output a high signal to supply to the main ring driver 3 and 13. The main ring driving units ₃ and 13 turn on the relays Ry ₁ and Ry ₃ according to the supplied signal, and output the rings to the A load and B load sides.

In this state, the high signal supplied from the F / F detectors 1 and 11 to the inverters 16 and 6 is inverted to a low state so that the resistances R ₅ 'and R _{5 of the} delay and comparator 32 and 12 are reversed. Non-inverting of the comparator (U ₂ ', U ₂ ) connected to the inverting terminal (-) by setting the reference voltage as the supply voltage (V) and (R ₆ ', R ₇ ') (R ₆ , R ₇ ) It is supplied to the terminal (+). The comparators U ₂ ′ and U ₂ of the delay and comparator 32 and 12 compare the supplied signal with the quasi-voltage and output a low signal to output a high state through the resistors R ₈ ′ and R ₈ . Is supplied to the other side of the AND gates 15 and 5 supplied to one side. Accordingly, when the AND gates 15 and 5 logically multiply the high signal of the self-diagnosis by the low signal supplied from the delay and comparison units 32 and 12, and supply the low signal to the auxiliary ring driver 14 and 4, ringgu ET (14,4) keeps the relay ₍₄ Ry, Ry ₂₎ by not supplying a driving signal to the side of the relay ₍₄ Ry, Ry ₂₎ to the oFF state. Therefore, in the normal case in which no F / F alarm is detected from the system side, only the relays Ry ₁ and Ry ₃ for the main ring are driven to normally provide the main ring to the A load and the B load side without collision.

If the F / F alarm signal is detected by the F / F detector 1 of the board A 10 and the normal signal is detected by the F / F detector 11 of the board B 20 from the board internal system, the board A The F / F detector 1 of (10) outputs a signal in a low state and is referenced to the supply power V and the resistors R ₂ and R ₃ through the resistor R ₁ of the delay and comparator ₂ . The voltage is set and supplied to the non-inverting terminal (+) of the comparator U ₁ connected to the inverting terminal (−) and to the inverter 16 of the board B 20 side. Since the voltage applied to the non-inverting terminal (+) of the delay and comparator 2 is immediately discharged by the resistor R ₁ and the diode D ₁ , the comparator U ₁ is a low signal as soon as a signal is applied. Is outputted to the main ring driver 3, and the main ring driver 3 maintains the relay Ry ₁ in an off state by an applied low signal.

At this time, the inverter 16 inverts the low signal supplied from the F / F detector 1 of the board A 10 to a high state, and then through the resistance R ₅ ′ of the delay and comparator 32. The reference voltage is set by the supply voltage (V) and the resistors (R ₆ ', R ₇ ') and is supplied to the inverting terminal (+) of the comparator (U ₂ ') connected to the inverting terminal (-). It is delayed by R ₅ ′) and capacitor C ₂ ′ and supplied to the inverting terminal (+) of comparator U ₂ ′. Accordingly, the comparator U ₂ ′ compares the signal supplied with the reference voltage and outputs the high state niho, and the AND gate 15 through which the high self-diagnosis signal is supplied to one side through the resistor R ₈ ′. The AND gate 15 is supplied to the other side of the AND gate 15 and logically multiplies the signal supplied through the self-diagnosis signal and the resistor R ₈ ′ and supplies the signal to the auxiliary ring driver 14 as a high state signal. The auxiliary ring driver 14 provides the auxiliary ring of the board B 20 to the A load side by supplying a driving signal to the relay Ry ₄ in accordance with the supplied signal.

That is, when the F / F detection unit 1 detects an F / F alarm, the delay and comparison unit 2 receives a signal from the main ring driver 3 immediately after the signal from the F / F detection unit 1 is input. The relay Ry ₁ is turned off and the delay and comparator 32 delays the signal applied from the F / F detector 1 through the inverter 16 by a predetermined time to the AND gate 15. Since the relay Ry ₄ is turned on by the auxiliary ring driver 14 by outputting a signal, the ring provided to the A load can be switched without collision between the main ring and the auxiliary ring.

On the other hand, if the user operates the system in a normal manner after repairing the system in which the F / F alarm has occurred, since a normal signal is detected by the F / F detection unit 1, a high signal is applied to the unbutter 16 on the board B 20 side. Since the supply is reversed to the low state, generation of the auxiliary ring is stopped, and the main ring on the board A 10 side is operated to perform a normal function. At this time, the time constant circuit composed of the resistor R ₁ and the capacitor C ₁ delays the supplied signal by a predetermined time, and the ring output is supplied to the A load side after being redundantly switched from the board B 20 side, and the board after the A recovery. Prevents collision with the ring output from A.

In addition, when the board A 10 is removed or the power is turned off, the supply of all power is stopped. Therefore, the inverter of the board B 20 side is a high impedance state in which no signal is output in the F / F detector 1. 16 is supplied. At this time, the inverter 16 is sensed as a low state signal by the pull-down resistor (R ₄ ') to invert the low signal to form a high state through the comparison and delay unit 32 and the resistor (R ₈ ') The self-diagnosis signal in a high state is supplied to the other side of the indicator 15 supplied to one side. Accordingly, the AND gate 15 multiplies the supplied signal and outputs a high signal to the auxiliary ring driver 14 to drive the relay Ry ₄ by the auxiliary ring driver 14 to perform the redundancy switching for the A load. do.

The operation for the B load operation is also performed as described above with the A load operation.

As described above, the present invention promotes normal load operation by redundantly switching adjacent boards when a non-calculated signal for ring signal generation is detected from the board internal system side, and the F / F alarm, the board hernia, and the power supply are The system's reliability is improved by preventing the collision of time signal due to time constant when performing normal function after repairing the blocked system.

Claims (7)

In a redundant switching circuit of a ring generator for an electron exchanger, the first and second F / F detectors (1) and (11) for detecting an F / F alarm supplied from a system and outputting a corresponding signal: the first F / The first delay and the comparison unit 2 for delaying the signal supplied from the F detector 1 by a predetermined time and comparing it with the reference voltage: to the A load according to the signal supplied from the first delay and the comparison unit 2. A first main ring driver 3 for supplying a control signal to the first relay Ry ₁ to send a ring output; and a first inverter 6 for inverting a signal supplied from the second F / F detector 11. And a second delay and comparison unit 12 for comparing the signal supplied from the first inverter 6 by a predetermined time and comparing it with a reference voltage, and: a signal supplied from the second delay and comparison unit 12. And a first end gate 5 for arithmetic operation of the magnetic delay signal, and a signal supplied from the first end gate 5. And a first auxiliary ring driver 4 for supplying a control signal to the second relay Ry ₂ to send a ring output to the B load in a redundant transfer according to the call. A third delay and comparison unit 22 for comparing the signal with a reference voltage after delaying the signal for a predetermined time; and a third relay for sending a ring output to the B load according to the signal supplied from the third delay and comparison unit 22. A second main ring driver 13 for supplying a control signal to the (Ry ₃ ) side; a second inverter 16 for inverting a signal supplied from the first F / F detector 1; and a second inverter ( And a fourth delay and comparison unit 32 for delaying the signal supplied from the circuit 16 by a predetermined time and comparing it with the reference voltage. The second and gate 15 and part A when redundancy is switched according to the signal supplied from the second and gate 15. A fourth relay (Ry ₄₎ of the redundant electronic exchange appointed ring generator comprising the second auxiliary drive ring 14 for supplying a control signal to the switching circuit side in order to send the ring output. 2. The first delay and comparison unit (2) according to claim 1, wherein the first delay and comparison unit (2) is provided with a first time constant (R ₁ , C ₁ ) for delaying a signal supplied from the first F / F detector (1) for a predetermined time. The reference voltage set by dividing the voltage through the resistors R ₂ and R ₃ is input to the inverting terminal (-) and the signal supplied from the first time constant parts R ₁ and C ₁ is supplied to the non-inverting terminal (+). a first comparator (U ₁₎ and, in the case of the first 1F / F detecting unit 1 detects an F / F alarm potential applied to the non-inverting terminal (+) of the first comparator (U ₁₎ for comparing receiving And a first diode (D ₁ ) for discharging the dual-circuit switching circuit of the ring generator for an electron exchanger. The second time constant unit of claim 1, wherein the second delay and comparison unit 12 delays the inverted signal supplied from the second F / F detector 11 through the first inverter 6 for a predetermined time. (R ₅ , C ₂ ) and the reference voltage set by dividing the supply power supply through the resistors (R ₆ , R ₇ ) are input to the inverting terminal (−) and received from the second time constant (R ₅ , C ₂ ). the second comparator the detection of the second comparator (U _2), and the second F / F detection unit 11 are F / F alarm comparing receives the signal supplied to the non-inverting terminal (+), (U ₂ And a second diode (D ₂ ) for discharging a potential applied to the non-inverting terminal (+) of the circuit. The third delay and comparison unit 22 is configured to control the signal supplied from the second F / F detector 11 from a third time constant unit R ₁ ′, C ₁ ′. The third comparator U ₁ ′ for receiving and comparing the supplied signal to the non-inverting terminal + and the third comparator U when the second F / F detector 11 detects an F / F alarm. _And a third diode (D ₁ ') for discharging a potential applied to the non-inverting terminal (+) of ₁ '). The fourth delay and comparator 32 according to claim 1, wherein the fourth delay and comparator 32 delays the inverted signal supplied through the second inverter 16 supplied from the first F / F detector 1 for a predetermined time. The time constant part R ₅ ′, C ₂ ′ and the air voltage set by dividing the supply power through the resistors R ₆ ′, R ₇ ′ are input to the inverting terminal (−), and the fourth time constant part R The fourth comparator U ₂ ′, which receives a signal supplied from ₅ ′, C ₂ ′, and compares it to the non-inverting terminal (+), and the first F / F detector 1 detects an F / F alarm. And a fourth diode (D ₂ ′) for discharging the potential applied to the non-inverting terminal (+) of the fourth comparator (U ₂ ′). The method of claim 1, wherein when the first F / F detector 1 detects an F / F alarm, the first delay and comparator 2 immediately transmits the received signal to the first main ring driver. 3) the first relay Ry1 is turned off, and the fourth delay and comparator 32 delays the applied signal by a predetermined time and outputs the signal to the second question 15 to the second subsidiary. A ring switching unit (14) turns on the fourth relay (Ry4), thereby preventing a collision phenomenon of the ring output provided to the A load. The method of claim 1, wherein when the second F / F detector 11 detects an F / F alarm, the third delay and comparator 22 immediately transmits the applied signal to the second main ring driver. 13) the third relay Ry3 is turned off, and the second delay and comparator 12 delays the applied signal by a predetermined time and outputs the signal to the first and gate 5 for the first auxiliary. A ring switching unit (4) turns on the second relay (Ry2), thereby preventing a collision phenomenon of the ring output provided to the B load.