KR20210020574A - Outlet module capable of pre-fire prevention and production equipment applying the same - Google Patents

Abstract

The present invention relates to a power outlet module capable of blocking a fire in advance, and a production facility using the same and, more specifically, to a power outlet module capable of blocking a fire in advance by measuring a load supplied to an external device, and a production facility using the same. To this end, the power outlet module capable of blocking a fire in advance of the present invention comprises: a plug inserted into another power outlet; a plug insertion terminal into which another plug is inserted; and a control unit which measures a voltage or a current provided through the plug insertion terminal, and performs instruction to transmit a warning signal to the outside when a waveform of the measured voltage or current is different from a waveform of a voltage or a current in a standby state and a normally operating state of a set program, wherein the control unit recognizes a low power current value and a maximum current value in the standby state or an operating state out of the standby state, calculates pattern data which is a current pattern from the recognized current value, and determines an abnormal symptom by comparing the calculated pattern data with stored pattern data in the normally operating state.

Description

Outlet module capable of pre-fire prevention and production equipment applying the same}

The present invention relates to an outlet module capable of blocking a fire in advance and a production facility to which the same, and more particularly, to an outlet module that blocks fire in advance by measuring a load supplied to an external device, and a production facility to which the same.

In general, an outlet is a device that supplies power to each device by receiving a power plug of an electronic device or an electrical device, and is used in various forms in homes, offices, or industrial sites.

Outlets can be single-headed, two-pronged, or multi-type, depending on the number of plug openings, and there are buried type and movable type depending on the installation type.

In some cases, outlets are installed to receive power directly from the distribution panel, which is the power source, but in most cases, a separate power cut-off device is installed between the distribution panel and the outlet to cut off the power supplied from the distribution panel depending on the emergency situation at the outlet. do.

However, in the structure where the power cut-off device and the outlet are separated, it takes some time until the power is cut off in the event of an emergency situation occurring at the outlet, i.e., contact with the human body, contact with conductors, excessive overload or overcurrent conditions. Therefore, there is a problem that cannot be dealt with immediately.

In addition, it is extremely rare that a simple spark or a short is actually connected to a fire. Currently, off-the-shelf products have a problem that power is cut off even in such a situation.

Accordingly, in recent years, in order to prevent electric shock accidents, various protection means for covering the outlet or outlets capable of shutting off the power have been developed, but there is still a limit to preventing excessive overload or overcurrent occurring in electric devices in advance. There is a situation.

In other words, it is common to lead to a fire when an excessively continuous overload or overcurrent occurs, not when an overload or overcurrent occurs temporarily in an outlet connected to an electric device. Therefore, there is a need for a method of preventing fire by detecting an excessively continuous overcurrent or abnormal operation state occurring in an outlet in advance.

Korean Patent Publication No. 2012-0126656 Korean Patent Publication No. 2011-0061047

The problem to be solved by the present invention is to propose an outlet module capable of blocking a fire in advance.

Another problem to be solved by the present invention is to propose an outlet module capable of measuring current or load.

Another problem to be solved by the present invention is to propose an outlet module that transmits a warning signal to the outside in case of an excessively continuous overcurrent or abnormal operation state.

Another problem to be solved by the present invention is to propose a method of blocking the current supplied to an external electric device in case of excessively continuous overcurrent or abnormal operation state.

Another problem to be solved by the present invention is to propose a method of blocking the current supplied to the production facility by detecting an abnormal load occurring in a production facility to which an outlet module is applied.

To this end, the fire pre-blocking outlet module of the present invention includes a plug inserted into another outlet; A plug-in terminal into which another plug is inserted; And the voltage or current provided through the plug-in terminal and measure the voltage or current in the standby state of the program in which the measured voltage or current waveform is set and Includes; a control unit for instructing to transmit a warning signal to the outside when different from the waveform shape,

The control unit recognizes the low-power current value and the maximum current value in the standby state or the operation state out of the standby state, calculates pattern data, which is a current pattern, from the recognized current value, and calculates the pattern data and the stored pattern of the normal operation state. The data is compared with voltage fluctuations to determine abnormalities.

To this end, the system for determining an overload of a production facility of the present invention comprises: a load measurement module for measuring a load supplied to the production facility; And calculating a load pattern from the load provided from the load measurement module, comparing the calculated load pattern with the stored normal load pattern to determine whether the provided load pattern is an abnormal load pattern, and providing from the load measurement module Measurement data that analyzes the load in the first analysis cycle when the fluctuation range of the received load is greater than the first fluctuation range, and analyzes the load in the second analysis cycle, which is relatively longer than the first analysis cycle when the fluctuation range of the load is less than the first fluctuation range. Conversion analysis module; includes.

The fire pre-blocking outlet module according to the present invention adds a configuration capable of measuring current (or voltage) or power to an existing outlet, or by combining an existing outlet function and a function capable of measuring current (or voltage) or power. , When the magnitude of the external current (or voltage) is measured in real time, and the waveform (or magnitude) of the measured current exceeds the safety factor range that is actively automatically applied according to the voltage and current in standby and normal operation conditions It has the effect of preventing the occurrence of fire due to excessively continuous overcurrent or abnormal operation state by blocking the external current.

In addition, the fire pre-blocking outlet module according to the present invention measures the temperature of the power communication part around the outlet module or inside the outlet module using a temperature sensor, if necessary, and cuts off the current when the measured temperature approaches the fire occurrence temperature. To prevent fire. In addition, by forming a separate manual switch, the user can directly cut off the current or automatically cut off the current.

In addition, the present invention can increase the analysis efficiency according to the variation of the load by varying the analysis period of the load according to the variation of the load in a system composed of a preceding device and a plurality of following devices. It is possible to accurately determine whether there is an abnormality.

1 illustrates a fire pre-blocking outlet module according to an embodiment of the present invention.
2 is a diagram illustrating another state of use of the fire pre-blocking outlet module according to an embodiment of the present invention.
3 is a graph analyzing the state of power use in an electric product.
4 shows an example of determining whether or not it is a normal operation state proposed by the present invention.
5 is a diagram illustrating an overload determination system for determining whether a production facility is overloaded according to an embodiment of the present invention.

The above and additional aspects of the present invention will become more apparent through preferred embodiments described with reference to the accompanying drawings. Hereinafter, it will be described in detail so that those skilled in the art can easily understand and reproduce through these embodiments of the present invention.

When an overcurrent or overload condition is confirmed, the outlet module proposed by the present invention determines whether a fire is in an emergency situation compared to the usual power use mode, and in case of an emergency, the power of the outlet module is cut off. do. In addition, in the present invention, the identified overcurrent pattern or overload pattern is subdivided and compared with an ordinary power usage pattern. Of course, in the case of a general short circuit or short circuit, in addition to the outlet module proposed in the present invention, it is also possible in an existing earth leakage circuit breaker.

To further explain, the power state in the standby state and the power state in the normal operation state are classified by operation type according to the type of power used, and stored as power data. This is used to subdivide the data by comparing the power type of standby power and operating power in a stable state at the time of initial operation and the power type of current standby power and operating power in real time, and to manage the safety factor applied to each power usage environment. It predicts and monitors the occurrence of a dangerous situation, and automatically cuts off the power when the dangerous situation continues and approaches the actual fire situation.

1 illustrates a fire pre-blocking outlet module according to an embodiment of the present invention. Hereinafter, a fire pre-blocking outlet module according to an embodiment of the present invention will be described in detail with reference to FIG. 1.

According to FIG. 1, the fire pre-blocking outlet module 100 includes a status display unit 105, a manual switch 110, an alarm speaker 120, an alarm LED 115, a plug 130, and a plug-in terminal 125. Include. Of course, other configurations other than the above-described configuration may be included in the fire pre-cut outlet module 100 proposed in the present invention.

The fire pre-blocking outlet module 100 according to the present invention is configured as a plug type that replaces the existing embedded type outlet module or is fastened to a pre-installed outlet module. Therefore, the plug formed on the pre-fire blocking outlet module may be fastened to the pre-installed outlet module. In addition, as will be described later, the buried type can be variously applied, such as a method of fastening to an existing outlet module or a method of employing the outlet module proposed in the present invention.

The status display unit 105 displays the state of the fire pre-blocking outlet module 100. The status display unit 105 displays the current voltage, current and power consumption in addition to displaying the event situation. In addition, the status display unit 105 may display various other information according to the user's setting.

The manual switch 110 is operated by the user to turn off (block) the power in the same way as the general outlet switch. In addition, the manual switch 110 is a switch that manually cuts off power supplied to the fire pre-cut outlet module when the current measured by the fire pre-cut outlet module is in an overcurrent state or an abnormal operation state. When a warning signal is generated to the outside by the alarm speaker 120 or the alarm LED 115, the user manipulates the manual switch 110 to be supplied to the fire pre-cut outlet module or from the fire pre-cut outlet module to external devices. Cut off the power.

The alarm speaker 120 transmits a warning sound to the outside according to a control command of the control unit 135 when it is determined that the current measured by the fire pre-blocking outlet module is excessively sustained or is in an abnormal operation state. The warning LED 115 also transmits an externally set optical signal according to a control command of the controller 135 when it is determined that the current measured by the fire pre-blocking outlet module is excessively sustained or is in an abnormal operation state.

The plug 130 is fastened to a pre-installed outlet as described above. In connection with the present invention, the fire pre-blocking outlet module measures a voltage at a portion connected to the plug.

In addition, a plug connected to an external device is inserted into the plug input terminal 125 in order to supply a garden to the external device. In connection with the present invention, the fire pre-blocking outlet module measures voltage or current at each plug-in terminal. Of course, fire pre-blocking receptacle modules can measure voltage or current at the plug.

In addition, the present invention includes a control unit 135, and the control unit 135 controls the overall operation of the fire pre-blocking outlet module proposed in the present invention. In particular, in relation to the present invention, the control unit 135 measures the size of the current (load) supplied to the outside, and, if necessary, measures the temperature of the pre-fire blocking outlet module or a specific location within the module using a temperature sensor.

The controller 135 controls to transmit a warning signal to the outside by using the alarm speaker 120 or the alarm LED 115 when it is determined that the measured current is excessively sustained in an overcurrent state or an abnormal operation state. When the measured temperature is higher than the set temperature (or close to the risk of fire), the controller 135 controls to transmit a warning signal to the outside using the alarm speaker 120 or the alarm LED 115.

Hereinafter, a process of measuring power in the controller will be described.

The control unit always detects the power usage pattern while power is being used by the external device. When power is used by a specific external device (electrical product), the external device rarely uses the power regularly, so the minimum and maximum power consumption data is always monitored. The control unit analyzes changes in power usage data, changes in power data due to speed control, or changes in power data due to temperature control while power is being used by the operation of external devices, so that the power use pattern is in a normal state. It is determined whether there is a power use pattern in a cognitive abnormal state. The control unit provides a primary alarm with an alarm speaker or an alarm LED when an event characteristic occurs due to an overcurrent or abnormal operation in which the power use state is excessive. Even after the first alarm, the control unit automatically cuts off the power if the power cutoff or stabilization measures due to overcurrent are not taken.

In the case of a rapid rise in voltage such as an instantaneous short or surge, a rapid rise in power (overload), or continuous use above or above the maximum value of the current, It is determined that it is a different power usage pattern (pattern of abnormal operation state). If the control unit deviates from the normal usage pattern, it determines that it is in an abnormal operation state, and recognizes that there is a risk of fire. If there is a risk of a fire, the control unit activates a detailed situation awareness program according to safety factor management to further subdivided and check the type of power use.If the fire concern continues even in this state, it will alert again and shut off the power if necessary. do.

When a plug of an external device or a lead wire for extending a wire is connected to the fire pre-cut outlet module proposed in the present invention, the fire pre-cut outlet module monitors the power supply state until the plug is disconnected. In addition, the fire pre-blocking outlet module recognizes and analyzes the power value of a normal standby state in which the external device is not operating while the external device is connected, and cuts off the power when an abnormality occurs in the standby power state. In addition, when the external device is operated, the change in power consumption due to the operation of the external device is recognized, and the pattern in the normal operation state is recognized and analyzed to continuously compare and monitor whether a pattern different from that of the normal operation state occurs. The monitoring method will be described later.

As described above, the fire blocking outlet module proposed by the present invention measures the current or load supplied through the inlet terminal, and if the measured current or load pattern is different from the pattern in the normal operation state or the pattern in the standby state, a warning signal to the outside Is sent out.

The fire pre-blocking outlet module proposed by the present invention can be used by fastening it to an existing wall-mounted wall outlet or as a single unit without the existing wall-mounted outlet.

Although the present invention is described as determining whether an overload is performed using current, the present invention is not limited thereto. Overload can be determined using voltage other than current.

FIG. 2 shows a fire pre-blocking outlet module coupled to an existing wall-mounted outlet according to an embodiment of the present invention. As shown in Figure 2, the fire pre-blocking outlet module is coupled to an existing wall-mounted outlet, and includes a status display unit 105, an alarm speaker 120, an alarm LED 115, and a control unit 135 including a storage function. .

3 is a graph analyzing the state of power use in an external device. According to FIG. 3, even in a normal operation state, an abnormal power use pattern may appear temporarily, but the phenomenon rarely persists for a long time. Also, in general, external devices operate within a predictable range.

For example, if an external device is connected to an outlet and the corresponding external device is connected to the outlet in order to use another external device while using it, more power is used as if the power consumption changes rapidly than when using an existing external device. Of course, even in this case, it is judged that the power environment where the event occurred, but the power consumption temporarily increases rapidly due to the connection of one more external device, but the power consumption of the two external devices is then combined and a stable power use pattern is maintained.

For this reason, the receptacle module proposed in the present invention can be applied to the extension lead wire type, and in particular, it is only necessary to check whether the plug is inserted and whether it is operated at each plug-in position, so no matter how many outlets (or plug terminals) there are It can also be checked and controlled.

As described above, the fire pre-blocking outlet module monitors the power usage pattern, and the monitoring method recognizes the pattern of the standby power state and the current value of the low power state and the current value of the maximum power state in the operation state out of the standby power state, The measured state value is saved as general power data and pattern data. Thereafter, if the stored general power data or data having a pattern different from the pattern data is input, it is determined that it is in an abnormal operation state. When the plug is removed, the saved data is automatically classified and saved by operation type, and the plug is placed in an initial setting state until it is plugged in again.

In addition, in the present invention, in addition to the method of using pattern data (graph), current values can be simply compared with general data, and it is preferable to complement the two methods. To explain further, when an abnormal symptom occurs in one monitoring method, it is determined whether an abnormal symptom occurs according to the other monitoring method, and the other monitoring method also generates an alarm sound when an abnormal symptom occurs. And cut off the power.

4 shows an example of determining that it is not in a normal operation state according to an embodiment of the present invention.

Referring to FIG. 4, when a peak signal is generated, an angle (a) of the generated peak signal is used as a criterion for determining that the operation is not in a normal operation state. The angle of the peak signal is compared to the set angle to determine whether or not it is in an abnormal operation state. To further explain, determining whether or not the abnormal operation state is performed simply by using the magnitude of the peak signal is to determine whether or not the abnormal operation state is performed using the angle of the peak signal, that is, a pattern. That is, when the abnormal operation state is determined using the size, it is determined that the abnormal operation state is temporarily exceeded, but when the pattern proposed in the present invention is used, the abnormal operation is performed only by temporarily exceeding the set value. It will not be judged as a state.

In addition, it is determined whether or not it is in an abnormal operation state by comparing the magnitude of the current at the time of normal operation and the magnitude of the current at peak (b). However, it is not determined whether or not the operation is abnormal by using only the magnitude of the current, but determines whether or not the operation is abnormal by considering the above-described pattern.

In addition, the abnormal operation state is determined by using the time (c) during which the non-normal operation state continues due to the peak. As described above, in the present invention, when any one of the above three factors is not satisfied, it is not determined that it is an abnormal operation state, but rather, it is determined whether or not the abnormal operation state by combining the three conditions.

In addition, since the fire arrival times of 20A and 200A are different, various judgment criteria are required to respond to fire risks autonomously depending on the external device being operated.

Hereinafter, a case where an abnormal symptom occurs before a fire occurs will be described.

1.In the event that a sudden change in current or load occurs more than once in a short time interval because the earth leakage breaker does not operate normally even though a short circuit occurs, the control unit has a built-in real-time power measurement device, so it is compared with the normal state pattern. Distinguish whether the current rises due to the use of the device or the current rises due to a short circuit.

To further explain, the current rise due to the use of an external device enters the stabilization stage after the current rises temporarily due to operation, whereas a short circuit causes the current to rise rapidly so that it cannot be compared with the power in the normal operation state. The fluctuation range of is so irregular that it cannot be compared with an external device in normal operation. Therefore, the control unit monitors an abnormal operation state due to a short circuit, and shuts off an alarm and power when it is determined that it is an abnormal operation state.

2. In the case of supplying power to operate an external device while the electric wire is folded or the wire is weakly attached, the motor does not operate normally due to looseness of the connection part or a defect in parts, oil shortage, or other drive device defects. A pattern of power usage different from the pattern in normal operation is indicated, and heat is generated as the resistance increases.

Since external devices have different characteristics for each device, it cannot be concluded that it takes some time before a fire occurs, but a current rise due to resistance appears, and the state persists for a predetermined period of time and then ignites. Accordingly, a current usage pattern in which a current temporarily increases in a normal operation state and then restored to a normal state is distinguished from a current usage pattern in which a fire occurs.

Due to the above analysis method, even if a plurality of external devices are connected at the same time or a plurality of external devices are connected using lead wires, it is possible to safely distinguish them. According to the experiment, when one external device is connected to one power source and when a plurality of external devices are connected, the power usage pattern increases as much as the power used by the connected external device, but a unique phenomenon such as when a fire occurs. Does not appear.

In addition, the present invention determines whether or not the plug is inserted in the portion where the plug is inserted into the outlet. After the plug is inserted into the outlet, the power consumption of external devices is monitored in real time. In addition, the present invention enables real-time transmission of the power state supplied through the outlet module to the control room in combination with the monitoring system, and checks the current state using the user's mobile phone, terminal device, or wired/wireless device using an application or provides alarm information. I can receive it.

Hereinafter, a method of determining whether the control unit of the outlet module is overloaded will be described.

The control unit monitors the current (power, load) supplied from the outlet module to the external device in real time. The control unit monitors the current supplied from the outlet module in real time and requests to store the pattern of the supplied current at the same time.

Hereinafter, a method of determining whether a load is abnormal using a pattern in the control unit will be described. When the load pattern of the current section is the same as the previously analyzed (stored) normal load pattern, the control unit determines that the load pattern of the current section is the normal load pattern. To this end, the control unit generates a load pattern for each section and controls to separately store a normal load pattern among the generated load patterns. Of course, the control unit can control to store the abnormal load pattern together, but can control to separately store the normal load pattern for quick comparison analysis.

To further explain, the control unit determines whether the load pattern in the current section is a normal load pattern using the stored normal load pattern. Whether or not the normal load pattern is the same as the stored normal load pattern, but also includes a case that is determined to be a normal load pattern from the stored normal load pattern even if not identical.

As described above, in the present invention, the abnormality of the load is not determined using a specific set value, but is determined using a pattern. That is, when it is determined whether a load is abnormal using a specific value, when the load temporarily increases, various operating environments such as the number of external devices that are operated cannot be reflected. Accordingly, the present invention does not determine whether a load is abnormal using a set value so as to reflect various operating environments of an external device, but determines whether a load is abnormal using a pattern.

That is, when determining whether the load is abnormal using a specific value, the load value at the previous point or the load value at a later point is not considered at all for whether the load is abnormal at the present time. To further explain, when determining whether a load is abnormal using a specific value, it is determined whether the load is abnormal with only the load at that point at each time point.

In contrast, the present invention determines whether there is an abnormality in the load using the pattern of the load, so that not only the load at the present time, but also the load at the previous point in time, and the load at the later point in time to determine whether the load is abnormal, It is a method of determining whether the load is abnormal from the method of determining whether the load is abnormal using.

5 is a diagram illustrating an overload determination system for determining whether a production facility is overloaded according to an embodiment of the present invention. Hereinafter, an overload determination system for determining whether a production facility is overloaded according to an embodiment of the present invention will be described in detail with reference to FIG. 5.

Referring to FIG. 5, the overload determination system includes a load measurement module, a measurement data conversion analysis module, and a fire pre-blocking module. Of course, other configurations other than the above-described configuration may be included in the overload determination system proposed by the present invention.

The load measurement module 502 measures the load of a device connected to the system. One device may be connected to the device connected to the system, but it is preferable that at least two devices are connected. When at least two devices are connected to the system, one device is the preceding device and the other is the following device. The preceding device may be one device, while the following device may be more than one device.

The preceding device is a device that is driven prior to driving of the following device, and the following device is a device that is driven after the preceding device is driven. That is, the device proposed in the present invention is composed of a preceding device that is a device that is driven before other devices, and a following device that is driven only after the preceding device is driven.

The load measurement module 502 measures the load required by the device connected to the system. In particular, the load measuring module 502 of the present invention includes a preceding device load measuring module that measures a preceding load, which is a load of a preceding device, and a total load measuring module that measures a total load that is a load of the entire preceding device and the following device. That is, the load measurement module 502 of the present invention measures the preceding load and the total load regardless of the number of following devices.

The measurement data conversion analysis module 504 receives information on the preceding load and the total load from the load measurement module 502. The measurement data conversion analysis module 504 calculates a subsequent load using the provided preceding load and the total load. Of course, the measurement data conversion and analysis module 504 can calculate the load of the entire following device, but it is impossible to calculate the load for each subsequent device.

The measurement data conversion analysis module 504 receives operation signals of the preceding device and the following device. To further explain, the measurement data conversion and analysis module 504 receives operation signals of the preceding device and each of the following devices, so that it is possible to know whether the preceding device and the following device are operated.

The measurement data conversion and analysis module 504 varies the analysis period according to the load pattern converted from the load measurement module 502. The measurement data conversion analysis module 504 shortens the analysis period when the converted load pattern is not the normal load pattern, and lengthens the analysis period when the converted load pattern is the normal load pattern. To this end, the measurement data conversion analysis module compares the stored normal load pattern with the converted load pattern, and when it is determined that the converted load pattern is not the normal load pattern, the analysis period is relatively long.

If the converted load pattern is an abnormal load pattern, the measurement data conversion analysis module 504 enlarges and subdivides the load pattern and compares it with the normal load pattern. That is, when it is determined that the converted load pattern is an abnormal load pattern, the measurement data conversion analysis module 504 expands and subdivides the load pattern instead of assuming that the load pattern is an abnormal load pattern, and performs a secondary comparison analysis with the normal load pattern. And, if it is determined that it is an abnormal load pattern by secondary comparison analysis, necessary operations such as power off or external warning are performed.

Since the measurement data conversion analysis module 504 receives information on whether the preceding device or the following device is operating, it determines whether the load pattern is normal based on the received information on whether the preceding device or the following device is operating. That is, the measurement data conversion and analysis module 504 cannot determine the load used in each of the following devices, but can know whether or not each of the following devices is operated. Accordingly, when an abnormality occurs in the converted load pattern, the measurement data conversion analysis module 504 may indirectly determine whether the abnormal load pattern has occurred due to which of the following devices. That is, if an abnormal load pattern appears after a specific following device is operated in a state in which the following device is operated under the existing normal load pattern, it can be estimated that the abnormal load pattern has occurred due to the corresponding following device.

As described above, the measurement data conversion and analysis module 504 proposed by the present invention may determine whether the load pattern of the following device is abnormal using the load pattern of the following device converted from the received load.

Further, as described above, the measurement data conversion analysis module 504 receives the load of the preceding device from the load measurement module, and generates a load pattern using the received load. The measurement data conversion analysis module 504 determines whether or not an abnormal load pattern of the preceding device is performed using the generated load pattern. To this end, the measurement data conversion analysis module 504 requests to separate and store the normal load pattern for the preceding device and the normal load pattern for the entire following device, and by using the stored normal load pattern for the preceding device, Judge whether or not.

The measurement data conversion analysis module 504 determines whether the load pattern of the subsequent device is abnormal when it is determined that the load pattern of the preceding device is a normal load pattern, and when the load pattern of the preceding device is an abnormal load pattern, the It does not judge whether there is an abnormality in the load pattern. To explain further, if the load pattern of the preceding device is an abnormal load pattern, the power supplied to the preceding device is cut off without determining the load pattern of the following device. When the operation of the preceding device is stopped, the following device is automatically operated. Stopped.

The fire pre-blocking module 506 cuts off the power supplied to the preceding device or the following device according to the control command of the measurement data conversion analysis module 504. That is, the pre-fire blocking module 506 cuts off the power supplied to the preceding device or the following device before the fire occurs according to the control command of the measurement data conversion analysis module 504.

Further, the measurement data conversion analysis module compares and analyzes the load pattern of the preceding device or the following device when it is provided that the preceding device or the following device is operating.

The normal pattern proposed in the present invention is stored for simple comparison with the load pattern, but it is not judged as an abnormal pattern because the load pattern is different from the normal pattern. For example, when an external device is connected to a power source and operated, starting power is instantaneously increased, and then it starts to stabilize at normal power. However, when the abnormal operation power is repeated after being stabilized or if it is difficult to see the normal pattern, it is determined as an abnormal pattern and the power is cut off.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is only exemplary, and those of ordinary skill in the art will understand that various modifications and other equivalent embodiments are possible therefrom. .

100: fire pre-cut outlet module 105: status display
110: manual switch 115: alarm LED
120: alarm speaker 125: outlet terminal
130: outlet 135: control unit
500: overload determination system 502: load measurement module
504: measurement data conversion analysis module 506: fire pre-blocking module

Claims (7)

A plug that goes into another outlet;
A plug-in terminal into which another plug is inserted; And
The voltage or current provided through the plug-in terminal is measured, and the measured voltage or current waveform is set in the standby state and the voltage or current in the normal operation state Includes; a control unit for instructing to transmit a warning signal to the outside when different from the waveform shape,
The control unit recognizes the low-power current value and the maximum current value in the standby state or the operation state out of the standby state, calculates pattern data, which is a current pattern, from the recognized current value, and calculates the pattern data and the stored pattern of the normal operation state. Fire pre-blocking outlet module characterized by comparing data to determine abnormalities.
The method of claim 1,
And at least one of at least one of an alarm speaker that transmits a warning sound to the outside or an alarm LED that transmits light to the outside according to a control command of the controller.
The method of claim 2, wherein the control unit,
Confirm the occurrence of the peak signal from the calculated pattern data,
Comparing the determined angle of the peak signal with a set angle, checking the current magnitude of the peak signal, or determining an abnormality using the duration of a state other than the normal operation state by the peak signal,
The angle of the peak signal for determining the abnormality is independent of the current magnitude in the peak signal,
It is determined that the power usage pattern is an abnormal operation condition pattern, which is a sign of abnormality, and if the abnormal operation condition pattern is determined, if the abnormal operation condition pattern persists even in the state determined by subdividing the electric power use pattern compared to the previous one, a warning sound or light is transmitted to the outside, and Fire pre-blocking outlet module, characterized in that it blocks.
The method of claim 3, wherein the control unit,
A fire pre-blocking outlet module, characterized in that, when it is determined that the pattern of the current measured after instructing to transmit a warning sound or light to the outside is an abnormal operation pattern, the power supplied to the plug-in terminal is cut off.
A load measurement module for measuring the load supplied to the production facility; And
Calculate a load pattern from the load provided from the load measurement module, compare the calculated load pattern with the stored normal load pattern to determine whether the received load pattern is an abnormal load pattern,
If the fluctuation range of the load provided from the load measurement module is greater than the first fluctuation range, the load is analyzed with the first analysis cycle, and if the fluctuation range of the load is less than the first fluctuation range, the second analysis cycle is relatively longer than the first analysis cycle. Measurement data conversion analysis module for analyzing the load; Overload determination system of the production facility comprising a.
The method of claim 5, wherein the production facility,
Predecessor;
And a following device that is operated after the preceding device is operated, and stops its operation when the operation of the preceding device is stopped,
The load measurement module,
A preceding device load measurement module for measuring the load of the preceding device; And
And a total load measurement module for measuring the total load of the preceding device and at least one following device.
The method of claim 6, wherein the measurement data conversion analysis module,
Receive information on whether the preceding device or the following device is operating,
When the preceding device is activated, it is determined whether the load pattern of the preceding device calculated from the load provided from the preceding device load measurement module is an abnormal load pattern,
When the following device is activated, a load pattern of at least one subsequent device is calculated from the load provided from the preceding device load measurement module and the entire load measurement module, and whether the calculated load pattern of the following device is an abnormal load pattern. Overload judgment system of production facilities, characterized in that judgment.

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