KR0139571B1 - Operation state observation and adjuster of active device - Google Patents

Abstract

The present invention provides an alarm signal when an upper and lower limit reference value generating means (R1 to R4, Rv1, Rv2) for generating a predetermined upper and lower limit reference value and a voltage or current amount of power supplied to a predetermined active circuit are out of the upper and lower limit reference value ranges. Alarm signal generating means (CP1, CP2, D1, D2, ZD1, LED) for generating a, characterized in that the normal operating range of the active element can be adjusted to the upper and lower threshold of the bias current, the type of signal transmitted The operating range can be adjusted according to the level of noise and noise tolerance, and the active state of the active circuit can be monitored at all times without interference of the main signal, and the degree of deterioration can be detected. The present invention relates to an operating state monitor / regulator of an active element having an effect of operational maintenance.

Description

Active state monitor / regulator

1 is a block diagram of an exemplary circuit in which an active element to which an operating state monitor / regulator of an active element is applied according to the present invention is doubled;

2 is a circuit diagram of an embodiment of an operating state monitor / regulator of an active element according to the present invention.

* Explanation of symbols for main parts of the drawings

11: power divider 12A, 12B: voltage stabilizer

13A, 13B: Active Circuit

14A, 14B: Bias Supply and Active Device Monitoring / Regulators

15: switch

The present invention relates to an operating state monitor / regulator of an active element.

In general, an operating state monitor / regulator of an active element performs an on-line performance monitoring of a circuit using an active element, and applies to a device that needs to flexibly set a performance degradation threshold according to characteristics of a system and transmitted signals. Are utilized.

There are two methods for monitoring the active state of the conventional active element.

First, there is a method of inputting another signal that does not interfere with the original signal into a circuit including an active element, and extracting and verifying the result.

However, such a method requires a circuit for generating a separate monitoring signal and a circuit for extracting it separately, and has a limitation in that the generation and extraction circuit diagrams of these reference signals must have high reliability. Therefore, the configuration and fabrication of the circuit by this method is complicated and the manufacturing cost increases.

The second method is to directly measure the output signal level of the circuit including the active element, mainly in the off-line state.

However, this method has a problem in that the overall availability of the system may be reduced by monitoring the operating state in an out of service state.

In addition, there is a method to monitor the operating state of the circuit even in the on-line state, but it detects a signal abnormality at the next circuit input terminal using the output signal as an input, and causes a failure in the preceding stage. As a method of confirming the possibility, there is a problem in that a separate software for handling the segregation of faults is required.

That is, the monitoring of the operation state of the active element according to the prior art uses an indirect method using an arbitrary signal that does not interfere with the main signal, or detects a failure in the stage where the output signal is connected to the input of another circuit, Monitoring is inaccurate, the process involved is complex, and there is a time delay for processing, resulting in a time delay in selecting a spare circuit due to a failure.

Therefore, new active device behaviors that enable accurate and rapid failure monitoring and control in devices that require high availability or need to flexibly set device performance degradation thresholds depending on the characteristics of the system and the operating range of the signal being processed. A surveillance method is needed.

Therefore, the present invention devised to solve the above problems, and determines the warning of the performance degradation of the active element itself in all circuits using the active element, and warns, the performance of the device according to the system characteristics and the operating range of the signal to be processed It is an object of the present invention to provide an operating state monitor / regulator of an active element that can flexibly set the degradation threshold.

In order to achieve the above object, the operation state monitor / regulator of the active element of the present invention comprises: input signal distribution means for distributing an input signal input from the outside; Voltage stabilization means for stabilizing a voltage input from the outside to output the first and second bias currents, respectively; A first active circuit which inputs the input signal from the input signal distribution means and outputs a first output signal from the first voltage stabilization means using the first bias current; A second active circuit which inputs the input signal from the input signal distribution means and outputs a second output signal from the second voltage stabilization means using the second bias current; First operating state monitoring / adjustment means for detecting said first bias current and comparing it with a preset threshold current and outputting a first control signal in accordance with a comparison result; Second operating state monitoring / adjustment means for detecting the second bias current and comparing it with a preset threshold current and outputting a second control signal according to a comparison result; And

Selectively outputting the first output signal to the outside or outputting the second output signal to the outside by the first control signal and the second control signal respectively output from the first and second operating state monitoring / adjusting means It comprises a switch means for.

Further, the first and second operating state monitoring / adjustment means according to the present invention includes: bias current monitoring means for converting the bias current input from the voltage stabilization means to output a detected voltage; First reference voltage generating means for receiving the bias current to generate a first reference voltage (where the first reference voltage is an upper limit reference voltage); Second reference voltage generating means for receiving the bias current to generate a second reference voltage, wherein the second reference voltage is an upper limit reference voltage; Comparison means for outputting the control signal by comparing the first and second reference voltages with voltages output from the bias current monitoring means, respectively; Constant voltage means for stabilizing the voltage at the output stage; And an alarm means driven by the control signal to warn that the driving bias current of the active circuit is degraded.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, FIGS. 1 and 2.

1 is a block diagram of an exemplary circuit in which an active element to which an operating state monitor / regulator of the active element is applied is duplicated.

As shown in FIG. 1, the power divider 11 provides the same input signal to the redundant active elements, and the voltage stabilizers 12A and 12B are supplied with an externally applied voltage to provide a stable voltage source. Provide bias current.

The active circuits 13A and 13B consist of active elements that amplify or attenuate the input signal and change phases, while the bias supply and operating state monitor / regulators 14A and 14B monitor the bias current and determine the operating range of the active element. It consists of a circuit that can adjust the upper and lower threshold currents.

The switch 15 is configured to be able to select a good path among the paths duplexed by the active circuit, and the selection of the switch is driven using the operation state monitoring result signal by the bias supply and the operation state monitoring / regulator as the switch drive signal.

2 is a detailed circuit diagram of an operating state monitor / regulator of an active circuit applied to FIG.

The method of determining the normal operating state of the active circuits 13A and 13B is to set the normal current consumption variation value and determine that the normal operation is not performed when it is within the range and when it is out of the range.

The voltage supplied to the active circuits of FIGS. 1 and 2 provides stable DC current to the voltage stabilizers 12A and 12B. Assuming that the normal consumption voltage and the amount of current are Vad and Iad, respectively, the normal operation of the active circuit. When the current consumption as a range is set from + ad to + P% and -Q% (typically, the absolute values of P and Q are set equal), the upper limit current thresholds (+ P%) are fixed resistors (R1, R3) and It is determined by the variable resistor Rv1. In addition, the lower limit current threshold (-Q%) is determined by the fixed resistors R2 and R4 and the variable resistor Rv2.

When the current is consumed by the active circuit above the upper limit current threshold, the node voltages of N2 and N4 are compared by the comparator CP2 and N4 is relatively high. It is fixed and the light emitting diode (LED) is driven to adjust the variable resistor (Rv2) to inform the alarm.

Similarly, when the current is consumed by the active circuit below the lower limit current threshold, the voltage of the node N2 is relatively high by comparing the voltage of the node N1 with the voltage of the node N3 by the comparator CP1. The variable resistor Rv1 is adjusted so that the output voltage is fixed to + Vz at the node N5 by the output constant voltage diode ZD1 and the light emitting diode LED is driven to inform an alarm.

In this case, the resistor R _LED prevents overcurrent from flowing through the light emitting diode LED. Load value corresponding to the upper and lower current fluctuations required after attaching a variable load (R _VL ) of appropriate rating to the output terminal instead of the active circuit to determine the variable resistors Rv1 and Rv2 according to the upper and lower threshold current amounts of the active circuit. Calculate and adjust it to that value.

The resistor Rp mounted between the node N1 and the node N2 is used to provide the comparison voltage of the comparator CP1 or the comparator CP2 and is rated so that the power consumption by the resistor Rp is as small as possible. Use a small value for. In addition, general-purpose diodes (D1, D2) separate the output of the comparators to operate independently. The output voltage of the comparator becomes -Vp and the output is cut off by the general-purpose diodes D1 and D2 within the upper and lower limit current fluctuations caused by the active circuit, so that the LED is turned off and the active circuit operates normally. Indicates that it is.

The present invention made as described above has the following effects.

First, the present invention may utilize a circuit configuration including an active element as a redundant configuration, but in an environment where N identical signals are required as inputs to other circuits, the same signals may be divided into N + M and N (operation path): M The switching matrix of the preliminary circuit has the effect of selecting and using a good signal according to the operation state monitoring result.

Second, the present invention has an effect that the operating range of the active device can be adjusted to the upper and lower thresholds of the bias current so that the operating range can be adjusted according to the type of the transmitted signal and the degree of noise tolerance.

Third, the present invention can always monitor the operating state of the active circuit without interference of the main signal, can detect the degree of deterioration, and its configuration is simple, so that the operation maintenance of the device can be efficiently performed. .

Claims (10)

Input signal distributing means for distributing an input signal input from the outside; voltage stabilizing means for stabilizing a voltage input from the outside to output first and second bias currents, respectively; A first active circuit which inputs the input signal from the input signal distribution means and outputs a first output signal from the first voltage stabilization means using the first bias current; A second active circuit which inputs the input signal from the input signal distribution means and outputs a second output signal from the second voltage stabilization means using the second bias current; First operating state monitoring / adjustment means for detecting said first bias current and comparing it with a preset threshold current and outputting a first control signal in accordance with a comparison result; Second operating state monitoring / adjustment means for detecting the second bias current and comparing it with a preset threshold current and outputting a second control signal according to a comparison result; And selectively outputting the first output signal to the outside or outputting the second output signal to the outside by the first control signal and the second control signal respectively output from the first and second operating state monitoring / adjusting means. And a switch means for outputting an operating state monitoring / regulator of the active element. 2. The apparatus of claim 1, wherein the first and second operating state monitoring / adjusting means comprises: bias current monitoring means for converting the bias current input from the voltage stabilization means to output a detected voltage; First reference voltage generating means for receiving the bias current to generate a first reference voltage (where the first reference voltage is an upper limit reference voltage); Second reference voltage generating means for receiving the bias current to generate a second reference voltage, wherein the second reference voltage is an upper limit reference voltage; And comparing means for outputting the control signal by comparing the first and second reference voltages with voltages output from the bias current monitoring means, respectively. 3. An operating state monitoring / regulator according to claim 2, wherein said bias current monitoring means includes a resistor connected between said voltage stabilizing means and said comparing means. 3. The operating state monitoring / regulator of the active element according to claim 2, wherein the first reference voltage generating means includes voltage adjusting means for manually varying the first reference voltage. 3. The operating state monitoring / regulator of the active element according to claim 2, wherein the second reference voltage generating means includes voltage adjusting means for manually varying the first reference voltage. 3. The apparatus of claim 2, wherein the comparing means comprises: a first comparing unit for comparing the current output from the first reference voltage and the bias current monitoring means; A second comparator for comparing the second reference voltage with the current output from the bias current monitoring means; And a control signal generator for generating a control signal using the comparison values output from the first and second comparators. The display device of claim 4, wherein the control signal generator comprises: a first diode connected to an output terminal of the first comparator to prevent the voltage of the output terminal from flowing backward; And a second diode having an anode connected to the output terminal of the second comparing means, a cathode connected to the first diode in common, and a second diode for preventing the output voltage from flowing backward. . 3. The apparatus of claim 2, further comprising: constant voltage means for stabilizing a voltage at the output stage; And an alarm means driven by the control signal to warn that the driving bias current of the active circuit is deteriorated. 9. An operating state monitoring / regulator according to claim 8, wherein said constant voltage means comprises a zener diode connected between said output terminal and ground. The operating state monitor / regulator of claim 8, wherein the alarm means comprises a light emitting diode connected between the comparison means and a ground.