KR100731456B1 - Valve control system with functions of power line communication and self - diagnosis functions of power status and phase - Google Patents

Abstract

A remote valve control system having power state and phase inspection functions is provided to perform a self-diagnosis operation by inspecting power states and phases of power. A master power signal conversion module(101) and a slave power signal conversion module(102) convert AC(Alternating Current) power to pulse signals. The number of pulse signals corresponds to the number of frequencies of the AC power. A power state inspection module(115) inspects the soundness of the AC power by counting the pulse signals through the master power signal conversion module and the slave power signal conversion module. A power line phase inspection module(116) inspects the phase of the power. A power module(117) determines connection/disconnection of the power by using the power state inspection module and the power line phase inspection module. A power line communication CPU(Central Processing Unit) module(105) and a control CPU module(106) are driven by using the power provided through the power module.

Description

Valve control system with functions of power line communication and self-diagnosis functions of power status and phase}

1 is a schematic configuration diagram of a power line control module having a dual communication line to which the present invention is applied.

2 is a detailed block diagram of the present invention system.

3 is an input / output waveform diagram of each module when checking a power supply state using the system of the present invention.

4 is an input / output waveform diagram when the power line phase is inspected using the system of the present invention.

5 is a waveform diagram when inspecting a noise reduction state generated when power is changed using the system of the present invention.

Explanation of symbols on the main parts of the drawings

12, 25: sub control module 13: AC input power 1

14 AC input power 2 15 AC input power 1 connection line

16: AC input power 2 connection line 17: Cross power line

18: valve 23, 24: critical valve

101, 102: primary and secondary power signal conversion module 105: power line communication CPU module

106: control CPU module 108, 109: power supply device

114: valve operation command device 115: power state inspection module

116: power line phase inspection module 117: power supply module

118: main control module 122: valve mechanism

205: power status check isorate module 207: pulse counter module

208: power state determination module 408: relay

The present invention relates to a power line remote valve control system having a power supply status and phase inspection function, and more particularly, a technology capable of controlling a hydraulic valve incorporating a hydraulic pressure and a valve driving device using a power line and a signal line. It prevents electrical shorts that can occur in power line communication, and enables the multiple power supply function through this, and automatically recognizes when power is unstable or when power is not applied to the main power line, and provides additional power that can operate during multiple powers. The invention has been invented to greatly increase the reliability of the system by applying it to a control system.

Currently, power line communication technology is a technology that is widely commercialized as a general technology, and is a type of technology that is commonly used for home automation in homes and lighting control systems in buildings.

However, in the case of a control system using a power line developed so far, when two or more powers are applied to the control system and one of them does not operate, the other one may be replaced with a main power source to operate the system without interruption. No technology has been announced.

In addition, in order to improve the reliability of individual power line communication systems, when two or more power sources are simultaneously applied to the control system, a system for automatically checking the phases between the power sources and controlling the connection between the two power sources when the phases are different from each other has not been developed. .

Finally, there is no function of whether to apply the power to the power line valve control system by checking whether the power applied is normal, not, or unstable.

In the case of a system without such a function, in particular, there is a disadvantage in that the operation of the system stops completely when a problem occurs in one supplied power when driving various valves and additional systems using a power line.

Meanwhile, the conventionally developed hydraulic valve forms a hydraulic pressure using a motor, moves the hydraulic actuator thus formed through a solenoid valve, and has a structure in which a valve connected thereto is rotated through the hydraulic actuator. The valve is equipped with all the above functions inside the valve, the valve control is commercialized in Europe, Japan, etc., and is referred to collectively as a hydraulic valve with a built-in hydraulic actuator. However, the valves invented to date have a problem in that a power line must be applied to drive a motor, and a separate signal line must be installed to receive a driving signal of the valve from an external controller or to transmit a valve position and speed to an external controller. . Recently, a device for transmitting a motor control and a signal using only a power line without a signal line described above has been applied. However, when a power supply is not applied to a supplied power line, a valve operation is impossible and a circular communication loop is formed between the valves. There is a problem that the valve control system may be damaged by an electric short circuit when the phase of the power applied to the valve connected to the start point of the loop and the valve connected to the last point is different.

SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional problem, and when two or more power lines are applied when driving a system using power line communication, phase recognition between multiple power lines applied and multiple power supplies applied are normal power supplies. Automatic recognition function, the ability to detect the state of the applied power to prevent power shortage between the two power supply, and if the state of the power supplied to the main power is unstable or not applied to the healthy of multiple power The purpose of this invention is to provide a power line remote valve control system with a power status and phase inspection function that can be applied to a real ship by enabling the function of automatically switching the main power for system driving and power line communication. have.

The control system of the present invention for achieving the above object, the main control module having a power supply status and phase inspection function between the power supply device and the valve control unit having a secondary control module having a valve operation command device An installed power line remote valve control system;

The main control module,

Create a pulse signal through zero crossing or TTL level isolator of AC power, and make up 60 pulses for 1 second when AC input power is 60Hz (except negative signal among AC signals) A primary and a secondary power signal conversion module for generating); A power state inspection module that calculates the number of pulses for one second using a signal converted from a power signal into a pulse signal through a main and a sub power signal conversion module, and checks the health state of an applied AC power; A power line phase checking module capable of checking a phase of an applied power source; A power supply module for determining power switching / connection using the results of the power state inspection module and the power line phase inspection module; And a power line communication CPU module and a control CPU module driven by the power supplied through the power applying module.

At this time, the power state inspection module, the power state inspection isorate module for converting the applied AC power in the form of a pulse signal; A pulse counter module for counting the pulse signals converted by the power state check isorate module; Characterized in that the power state determination module for checking the applied state and the operating state of the AC power using the pulse number counted in the pulse counter module.

The power line phase checking module may detect a phase difference of an applied AC signal by performing an AND operation on a square wave pulse signal of two AC signals which are converted and output through the power state checking module.

And, when only one of the two AC input power is applied, the power supply module is connected to the alternating power line of the AC input power 1, AC input power 2 and AC input power 1 and AC input power 2 by using a relay (Relay). It features.

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

Figure 1 shows a schematic configuration diagram of a power line control module having a dual communication line to which the present invention is applied, Figure 2 shows a detailed configuration diagram of the system of the present invention, Figure 3 is to check the power supply state using the system of the present invention Figure 4 shows the input and output waveform diagram of each module at the time, Figure 4 shows the input and output waveform diagram when the power line phase is inspected using the system of the present invention, Figure 5 is the noise generated when the power change using the system of the present invention The waveform diagram when examining the reduced state is shown.

According to the present invention, the power supply state and phase inspection is performed between the sub-control module 12 having the power supply 108 and the valve operation command device 114 and the power supply 109 and the valve mechanism 122. A power line remote valve control system having a main control module 118 equipped with a function;

The main control module 118,

A pulse signal is generated through zero crossing of an AC power source or an isorate of a TTL level, and the generated pulse signal is the main and secondary power signal conversion module 101 (102) that generates 60 signals per second when the AC input power is 60 Hz. )and;

Through the primary and secondary power signal conversion module 101, 102 to calculate the number of pulses for 1 second using a signal converted from a power signal to a pulse signal, through which the health of the applied AC power can be inspected A power state inspection module 115;

A power line phase checking module 116 capable of checking the phase of an applied power source;

A power supply module 117 that determines switching / connection of power by using the results of the power state checking module 115 and the power line phase checking module 116;

And a power line communication CPU module 105 and a control CPU module 106 for supplying the power supplied through the power supply module 117 to the sub control module 12 and the valve mechanism 122, respectively. .

In this case, the power state inspection module 116 may include: a power state inspection isorate module 205 for converting an applied AC power into a pulse signal form; A pulse counter module (207) for counting the pulse signal converted by the power state check isolation module (205); Characterized in that the power state determination module 208 for checking the applied state and the operating state of the AC power using the pulse number counted by the pulse counter module 207.

In addition, the power line phase inspection module 116 multiplies (AND) a square wave pulse signal of two AC signals converted and output through the power state inspection module 115 to detect a phase difference of an applied AC signal. It is characterized by.

In addition, when only one of two AC input powers is applied, the power supply module 117 may include an AC input power source 1 (13), an AC input power source 2 (14), and an AC input power source 1 (13) and an AC input power source 2 ( It is characterized in that the crossover power line 17 of 14) is connected using a relay.

The operational effects of the control system of the present invention configured as described above are as follows.

First, FIG. 1 shows a configuration diagram of a power line remote valve control system having a dual power line communication / control function that can be implemented when using a power line remote valve control system having a power state and phase inspection function proposed in the present invention. have.

According to the present invention, a structure that can be implemented through the present invention includes a sub-control module (12) and (25) which can receive operation commands and current state signals of a valve, and valves incorporating hydraulic and power line communication / control functions. The valve 18 and the valve 18 can be constituted by a critical valve 23 or 24 which is a major problem when a failure occurs.

In this case, the power line remote valve control system having a power supply status and phase checking function transmits or receives information using multiple power lines, a function of supplying additional power by itself in the event of a power line abnormality, and two power lines. When it is applied, since there is a function that can detect the state of the phase and the applied power by itself and apply the power so that a short does not occur between the two power supplies, communication between the valves 18 as shown in FIG. When connected via the two connecting lines (15) and (16), there is an advantage that the AC input power 1 (13) and the AC input power 2 (14) can be applied simultaneously.

In addition, the valve 18 having the power line remote valve control system function having the power status and phase check function is connected to the AC input power 1 (13) and the AC input power 2 (14) output from the sub-control module 12. Receives an operation command from the sub control module 12, or the state of operation of the valve 18 and the state of normal operation of the valve through the sub input module 1 through the AC input power 1 (13) or the AC input power 2 (14). Will be sent information.

In addition, the sub-control module 12 has a function of applying power only to AC input power 1 (13), power only to AC input power 2 (14), or simultaneously applying two AC input power.

At this time, the AC input power 1 (13) and the AC input power 2 (14) can be configured as a single cable, if the power is applied to the valve 18 only through the AC input power 1 (13) valve ( 2) examines the normal state and phase of the power applied by the valve control system having the dual-line power line communication and control function shown in FIG. 2 to check the relay built in the individual valve 18 when there is one applied power. This connects the power line to another valve.

That is, the AC input power supply 1 (13), the AC input power supply 2 (14), and the alternating power supply line 17 of the AC input power supply 1 (13) and the AC input power supply 2 (14) are all connected to the AC input power supply 2 (14). Even if power is not applied to the power, automatic power supply and communication loop between the valves 18 is formed.

In addition, even when power is applied only to the AC input power supply 2 14 and no power is applied to the AC input power supply 1 13, the automatic power supply and communication loop between the valves 18 are formed in the same manner as described above. .

If power is simultaneously applied to the AC input power 1 (13) and the AC input power 2 (14), the cable actually laid is composed of one cable instead of two cable installations, as shown in FIG. When the AC input power source 1 (13) and the AC input power source 2 (14) are in phase with the power line phase checking module 116, the AC input power source 1 (13) and the AC input source through a relay built in the valve 18. The power line 2 is connected to the cross power line 17 of the power supply 14, and if the phase is different, it does not connect the relay inside the valve 18 has a function to prevent an electrical short when the phase difference between the power supply occurs.

2 is a detailed block diagram of a power line remote valve control system having a power supply status and phase checking function proposed in the present invention. The AC power supply 110 and 112 may have a zero crossing or TTL level. The pulse signals 111 and 113 are made through an isolator, and the pulse signals generated in this way generate 60 pulses (except negative signals among AC signals) for 1 second when the AC input power is 60 Hz. Calculate and apply the number of pulses for 1 second using the signal converted from the power signal to the pulse signal through the sub power signal conversion module 101 and 102 and the main and sub power signal conversion module 101 and 102 Multiply (AND) the pulse signals 111 and 113 from the power state inspection module 115 and the primary and secondary power signal conversion modules 101 and 102, which can determine the good or the bad AC power. 60 in 1 second phase If pulses can be obtained (302, 303, 306 of the symbols shown in Fig. 4), and the phases of the AC input power supply 1 (13) and the AC input power supply 2 (14) are different, 0 pulses are input (304 in Fig. 4). , 305, 307, through which the power line phase check module 116, power supply module 117, power line communication CPU having the function of knowing the phase of AC input power 1 (13) and AC input power 2 (14) The main control module 118, which is composed of the module 105 and the control CPU module 106, performs power switching / connection and power line communication module functions, includes a power supply 108 and a valve operation command device 114. The sub control module 12 and the power supply device 109 and the valve mechanism part 122 are provided.

In this case, the reason for checking the phase in the power line phase inspection module 116 is, when power is simultaneously applied to the AC input power source 1 13 and AC input power source 2 14 in FIG. This is to prevent.

On the other hand, the power phase detection module 116 outputs the master and slave setting signals 107 to the power supply module 117 to select the master and slave of the power applied to the valve as follows.

In FIG. 2, the AC input power supply 1 13 and the AC input power supply 2 14 respectively apply power for controlling the valve 18 to the main control module 118.

 In this case, when power is applied only to the AC input power source 1 13, the power state checking module 115 may supply power from the AC input power source 1 13, but not AC input power source 2 121. You can judge.

In addition, the power applying module 117 is configured to select AC input power 1 (AC1) and AC input power 2 (AC2) as shown in FIG. 5 through the results obtained from the power state inspection module 115 and the power line phase inspection module 116. The relay 408 has a function of connecting or not connecting.

Even if only the AC input power 1 13 is applied through the power applying module 117, a communication loop between the valves 18 is formed as shown in FIG. 1, thereby improving reliability of the system.

If a problem is found in the AC input power source 1 (13) as a result of the test through the power state inspection module 115, since the AC input power source 2 (14) is automatically applied through the sub control module 12 (25), This newly establishes a communication loop between the valves shown in FIG. 2.

Even when the AC input power source 1 (13) and the AC input power source 2 (14) are simultaneously applied through the sub control module 12 (25), the phase difference is detected through the power line phase inspection module 116 of FIG. As a result, when the phases are the same, the power supply module 117 does not connect the two AC power sources to prevent electrical shorts when the phases are different. Thus, a dual power line communication and control structure as shown in FIG. The reliability of is to be improved.

3 is a detailed configuration diagram of the power state inspection module 115 of FIG. 2 invented to implement a power line remote valve control system having a power state and phase inspection function proposed in the present invention.

In the valve control system of FIG. 2, two or more AC powers can be input, and the AC power inputs 13 and 14 inputted through the power state check isolator module 205 respectively have a square wave pulse type signal ( 202, 204.

The signals 202 and 204 converted into the square wave pulse waveform form can be easily counted through the pulse counter module 207 having a general microprocessor type, and 60 pulses per second in a commercial AC power supply of 60 Hz. Is counted.

If the pulse number measured by the power state determination module 208 that receives the output signal of the pulse counter module 207 is determined to be in the range of 50 to 65, normal AC power is applied. If it is less than or more than 65, it can be seen that there is a problem in the applied commercial power, through which it is a criterion for selecting the AC power to be applied to the system when applying multiple power.

On the other hand, Figure 4 shows a detailed configuration of the power line phase inspection module 116 of Figure 2 invented to implement a power line remote valve control system having a power state and phase inspection function proposed in the present invention.

Here, the square wave pulse signals 301 and 302 are signals converted from AC power signals having the same phase and represent the pulse waveform of the same phase. When the logical "AND" operation is performed, the signals of the same pulse waveform ( 305).

Square wave pulse signals 303 and 304 converted from AC power signals having different phases to pulse signals show pulse waveforms of different phases, and when the logical "AND" operation is performed, the same pulse waveform cannot be obtained. (306).

If the result obtained by the power line phase inspection module 116 is shown as a pulse waveform 305, it can be determined that the phase of the applied two AC power source is the same, as shown by reference numeral 306 shown in FIG. If the waveform does not appear, it may be determined that the phases of the two applied AC power supplies are different.

In addition, Figure 5 shows a detailed configuration of the power supply module 117 of Figure 4 invented to implement a power line remote valve control system having a power state and phase inspection function proposed in the present invention.

If the result obtained through the power line phase check module 116 is the same phase, two power supplies are connected, or when the AC power applied as the main power through the power state check module 115 has a problem, relays the remaining AC power. Will be connected via

In the case of using a commercial AC high voltage, when the amplitude of the AC high voltage is high as shown by reference numeral 401 of FIG. 5, when the power is switched or connected using the relay 408, the power of the switched or connected part is changed by the mechanical contact characteristic of the relay. Noise is generated as indicated by 402 in FIG. 5, and the generated noise is also displayed as shown in 403 even when the generated noise is converted into a DC control power source for driving the control system.

In this way, when noise is added to the control power source for driving the control system, the control system malfunctions.

Therefore, in order to prevent this, in the present invention, an interrupter is generated in the microprocessor using a signal converted into a pulse waveform at a time 404 when the amplitude of the AC high voltage becomes zero (405) and a relay is generated at the generated interrupter time. By switching or connecting the power supply, the amplitude of the AC high voltage becomes zero at this point so that noise is not generated (406).

When the present invention is applied as described above, since there is no noise in the power source of the switched or connected part, the power for driving the control system using the same also has no noise (407), which can contribute greatly to the improvement of the performance of the control system.

Although the above-described embodiments have been described with respect to the most preferred embodiments of the present invention, it is not limited to the above embodiments, and it will be apparent to those skilled in the art that various modifications can be made without departing from the technical spirit of the present invention.

As described above, according to the control system of the present invention, the power line switching / connection and communication of the dual structure are enabled, and the valve control system for driving the valve has a function of detecting an applied state and phase of power by itself. It is a very useful invention that it is possible to implement the self-diagnosis system so that the system can be installed without the need for the installation of the double cable when the real ship is required to install the system having the double structure, and the failure of each valve can be automatically recognized. .

Claims (4)

A power line remote valve control system provided with a sub control module having a power supply device and a valve operation command device, and a main control module having a power status and phase checking function between the power supply device and the valve mechanism part; The main control module, A main signal and a sub power signal conversion module for generating a pulse signal through an AC power through zero crossing or a TTL level, wherein the generated pulse signals generate 60 pulses for 1 second when the AC input power is 60 Hz; A power state inspection module that calculates the number of pulses for one second using a signal converted from a power signal into a pulse signal through a main and a sub power signal conversion module, and checks the health state of an applied AC power; A power line phase checking module capable of checking a phase of an applied power source; A power supply module for determining power switching / connection using the results of the power state inspection module and the power line phase inspection module; And a power line communication CPU module and a control CPU module driven by the power supplied through the power applying module. The method according to claim 1, The power state inspection module, A power state check isorate module for converting an applied AC power into a pulse signal form; A pulse counter module for counting the pulse signals converted by the power state check isorate module; The power line remote valve control system having a power state and phase check function, characterized in that the power state determination module configured to check the applied state and the operating state of the AC power using the number of pulses counted by the pulse counter module. The method according to claim 1, The power line phase inspection module, Power line remote valve having a power state and phase check function, characterized in that for detecting the phase difference of the applied AC signal by multiplying (AND) the square wave pulse signals for the two AC signals converted and output through the power state check module. Control system. The method according to claim 1, The power supply module, When only one of the AC input power is applied, the power status and phase checking function is characterized by connecting the AC power supply 1, the AC input power 2, and the cross power lines of the AC input power 1 and the AC input power 2 by using a relay. One power line remote valve control system.

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