KR101103749B1 - cabinet panel system - Google Patents

Abstract

The present invention is applied to the distribution panel and has a data storage function and a data transmission function to the host server for various events such as the ON / OFF state of the contacts of the breaker, the breaker, and the overcurrent, and at the same time, the harmful elements that threaten electrical safety. The present invention relates to a distribution panel system capable of detecting a sensor module as a sensor module and transmitting the same to a server through RF network communication.

The distribution panel system of the present invention includes a distribution panel controller for detecting the current and voltage of the power line and the ON / OFF state of the circuit breaker and controlling the circuit breaker; A sensor module composed of at least one sensor installed around the distribution panel; And a black box unit for storing detection data input from the distribution panel controller and sensing data input from the sensor module, a communication unit transmitting a message to a remote server using the data stored in the black box unit, and receiving a response message. And a gateway module including a processor for controlling the communication unit. Here, the processor may be configured to control to transmit a message including the black box unit ID field, the power data field, and the sensing data field to a remote server when a predetermined period and a specific event occur.

Therefore, the present invention prevents the electric fire by transmitting the detection data and the sensing data to the remote server to take a quick action on the electrical equipment with the signs of the electric fire, and also by storing the extracted data and the sensing data in the black box Even in the event of an electrical fire, objective and scientific data on arc, overcurrent, overvoltage, leakage current, etc. are secured and based on this, it is possible to analyze the cause of the electrical fire and take appropriate measures.

Black box, fire, electrical safety, switchboard, distribution board, gateway

Description

Distribution panel system with data storage and gateway function {cabinet panel system}

The present invention relates to a distribution panel system, and in particular, it is applied to a controller such as a digital distribution panel or a distribution panel, and a data storage function and a data transfer function to a host server for various events such as ON / OFF state of leakage current, breaker contact point, and overcurrent. At the same time, the present invention relates to a distribution panel system capable of detecting harmful environmental factors that threaten electrical safety as a sensor module and transmitting them to a server through RF network communication.

Typically, the main causes of electrical fires are short circuits, overcurrents, arcs and leakage currents. In an ongoing effort to reduce the occurrence of electrical fires, breakers are installed in switchboards and distribution boards to prevent fire accidents by cutting off the power supply in the event of a short circuit, overcurrent or short circuit. Here, as is well known, the distribution panel is a device that receives electric power from the distribution panel again, opens and closes the circuit of the electric system, and distributes it indoors. Therefore, hereinafter, the distribution panel and the distribution panel are collectively referred to as the distribution panel.

1 shows a three-phase wiring breaker equipped with a conventional micro switch.

As shown in Fig. 1, the breaker is equipped with a microswitch, which switches the power supply on / off and detects the power supply state and transmits it to the distribution board controller.

However, in the case of the circuit breaker equipped with the micro switch 10, it is not easy to mount the micro switch in a narrow space, and the cost is increased due to the increase in the number of installation of the circuit breaker. have.

In addition, the micro-switch 10 is virtually difficult to install in a small circuit breaker such as a single-phase earth leakage breaker, so that there is no distribution panel having a function of accurately detecting the state of the earth leakage breaker.

In addition, unlike the circuit breaker for wiring, micro switch is installed for each earth leakage breaker that is installed in a large number through the distribution panel, and thus, a distribution panel equipped with a line facility for transmitting a signal to the outside is also a problem in terms of price and difficulty in equipment. Is virtually impossible.

In addition, the distribution panel with a remote system to monitor the arc and leakage current, overcurrent, overvoltage, the breaker's on / off state through the manager at all times is still insufficient.

Conventional distribution panel controllers require the measurement of AC voltage for power monitoring or measurement. Here, the distribution panel controller is composed of a circuit insulated from the primary AC side for stability reasons.

However, if the AC voltage measuring circuit or the sensing circuit of the primary side is configured in the non-isolated form in the distribution panel controller, the controller of the insulated configuration for the stability of the AC power supply side is again in the non-isolated form.

Representative examples of the conventional method for detecting an isolated AC voltage is to insulate using a low frequency transformer and to obtain a voltage value by dropping the voltage, or to divide the magnitude of an expensive dedicated semiconductor integrated circuit or an AC voltage to a low voltage. It is a method of reading from each processor, but the disadvantage is that the circuit is large and the density is low and the weight is heavy.

In the prior art, the AC voltage sensing circuit has been used in various ways, but in general, the AC voltage terminal and the DC voltage terminal are not electrically insulated.

In other words, when the AC voltage sensing circuit uses a high-priced dedicated semiconductor integrated circuit or a method of dividing the magnitude of the AC voltage into low voltages and reading them from each processor, the output signal of the dedicated semiconductor integrated circuit and each processor The driving power source is commonly connected to the commercial power source side, which is the primary side, and the ground. In order to read these voltage signals and use them as alarms or control signals in secondary systems such as digital devices and controllers, the grounding of the secondary system must also be common, which prevents the primary and secondary sides from being insulated. There was this.

Therefore, in general, a digital device or a controller is electrically insulated from an AC voltage terminal, and a conventional non-isolated AC voltage sensing circuit has many difficulties in handling by a user. There was a problem that the operation is not easy.

Existing low voltage distribution panel was passive type, but in recent years, electronic controllers have been combined to develop the digital transmission by measuring the quality and amount of power.

However, the existing low voltage distribution panel lacks an important function of measuring and transmitting the hazards necessary for electrical safety. Therefore, there is a problem that it is difficult to analyze the cause of the fire when the distribution panel is damaged by the electric fire.

As a result, the existing distribution panel system is insufficient to be applied to the U-City system, which is a trend of pursuing convenience and safety of life by combining with IT technology.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and is applied to a controller of a digital distribution panel, and transmits data to a higher storage server and a data storage function for various events such as ON / OFF state of overcurrent and leakage current, breaker contacts, and overcurrent. The purpose is to provide a distribution system with functions.

In addition, an object of the present invention is to provide a distribution panel system capable of detecting harmful environmental factors threatening electrical safety as a sensor module and transmitting to a higher server through a network communication.

In addition, an object of the present invention is to provide a distribution panel system equipped with a SMPS configured to detect the magnitude of the AC voltage as an isolated DC voltage signal.

In order to achieve the above object, a distribution panel system of the present invention includes a distribution panel controller for detecting current and voltage of a power line and an ON / OFF state of a circuit breaker, and controlling a circuit breaker; A sensor module composed of at least one sensor installed around the distribution panel; And a black box unit for storing detection data input from the distribution panel controller and sensing data input from the sensor module, a communication unit transmitting a message to a remote server using the data stored in the black box unit, and receiving a response message. And a gateway module including a processor for controlling the communication unit. Here, the processor may be configured to control to transmit a message including the black box unit ID field, the power data field, and the sensing data field to a remote server when a predetermined period and a specific event occur.

In addition, the distribution panel system of the present invention may further include an SMPS module for supplying power to the distribution panel controller and the gateway module. Here, the SMPS module is to supply power by converting an AC voltage of a power line supplied to a distribution panel system into direct current.

In addition, the power data field is assigned a predetermined number of bits for each of the supply state of the main power supply, the supply state of the lamp, and the supply state data of the other power source power. In addition, the sensing data field is assigned a number of bits of a predetermined length for the sensing data of each of two or more different sensors.

In addition, the processor may determine whether to retransmit according to a specific field value included in the response message for the message sent to the remote server.

The sensor module is a temperature sensor for detecting the temperature in the air, a humidity sensor for detecting the humidity in the air, a vibration sensor for detecting the vibration caused by the earthquake or the collapse of the building, the immersion sensor and air to detect the inundation state of the place where the distribution board is installed At least two or more types of smoke sensors which detect the smoke in the air are included. Here, at least one of the different types of sensing data may indicate a class of the sensed value.

The processor may calculate a safety index using sensing data input from a sensor module, and store the safety index in the black box and include the message in a message transmitted to a remote server.

In addition, the distribution panel controller is characterized in that it comprises a voltage / current sensing module and a digital control module.

The voltage / current sensing module is connected to a sensing resistor for converting an AC current signal sensed by a current transformer or an image current transformer into an AC voltage signal, an amplifier for amplifying the AC voltage signal converted from the sensing resistor, and a power supply terminal line of a branch circuit breaker. Connected to the power supply side photocoupler for sensing the power supply state by receiving a signal output from a terminal of a transistor that is turned on when the diode emits light and a diode that emits light when the power is supplied to the power supply side; And a load side photocoupler for receiving a signal output from a terminal of a transistor that is turned on when the diode emits light, and a load side photocoupler for sensing a power state of the load side.

The digital control module includes a signal processing module for detecting a state of an AC voltage signal amplified by the amplifier, an effective value converter for converting an AC voltage signal processed through the signal processing module into an effective value of direct current, and the effective value converter. An AD converter for converting the effective value of the direct current converted from the digital signal into a digital signal, a power input / output terminal for receiving signals output from the power supply side photocoupler and a load side photocoupler, and a power side and load side of the signal received at the power input / output terminal. A control unit for sensing a power state and processing a digital signal, a digital input / output unit to which the AD converter and the digital signal converted by the control unit are input, and a microcontroller controlling the branch breaker while compensating and determining the digital signal received through the digital input / output unit. It includes a processor. Here, the digital input / output unit outputs a digital forced trip signal according to the current and voltage state determined by the microprocessor, and the forced trip signal is analog-converted through the control unit and output through the power input / output terminal to output the image. It can be configured to penetrate the current transformer.

In addition, the SMPS module detects the magnitude of the AC voltage and outputs it in the form of a DC voltage.The peak voltage detector generates a signal by converting the highest value from the AC voltage inputted by full-wave rectification and input into a DC value. ; A triangular wave oscillator for oscillating a triangular wave whose magnitude is compared with a DC value of the peak voltage detector; A comparator unit for generating a square wave while performing a switching operation by comparing the magnitude of the DC value of the peak voltage detector with the magnitude of the triangular wave; An insulation and signal transmission unit including a photocoupler which is turned on when the square wave is generated in the comparator unit and transmits the square wave to the secondary side; And a smoothing and adjusting unit converting the square wave signal transmitted through the insulation and signal transmitting unit into a DC value.

The triangular wave oscillator may include a zener diode for adjusting the magnitude of the waveform of the triangular wave.

The comparator maintains the output of TTL High when the DC value of the peak voltage detector is greater than the size of the triangular wave of the triangular wave oscillator. The output is TTL when the DC value of the peak voltage detector is smaller than the size of the triangle wave of the triangular wave oscillator. The square wave may be generated by a pulse width modulation method to maintain Low, and the magnitude of the signal transmitted to the secondary side may vary according to the magnitude of the primary AC voltage.

The insulation and signal transmission unit includes a diode that is turned on when a square wave is generated in the comparator unit and a transistor that is turned on when a base voltage is applied from the diode, so that the Vcc_S voltage of the secondary side is applied while the transistor is turned on. Can be.

The smoothing and adjusting unit may include a smoothing circuit for converting the DC value through a duty ratio of the pulse width of the square wave transmitted to the secondary side, and an adjusting circuit including a variable resistor for adjusting the magnitude of the converted DC value. .

According to the distribution panel system of the present invention has the following effects.

First, the present invention transmits the detection data and the sensing data to the remote server to take a quick action on the electrical equipment with the signs of the electrical fire to prevent the electrical fire, and also extract the extracted data and the sensing data to the black box By storing, it provides the objective scientific data on arc, overcurrent, overvoltage, leakage current, etc., even if an electric fire occurs, and analyzes the cause of the electric fire and takes appropriate action.

Secondly, by the SMPS of the present invention, the user can easily handle the digital controller of the digital distribution board which is electrically insulated from the AC voltage terminal, and can make various circuit configurations.

Third, the present invention provides an effect that can be centrally managed by transmitting the hazardous electrical safety environment element detected through the sensor module to the remote server and stored in the gateway module.

Hereinafter, a distribution panel system according to a preferred embodiment of the present invention with reference to the accompanying drawings will be described in detail.

Digital distribution panel means a distribution panel with user interface and communication function by applying digital technology to signals detected by existing analog relays or breakers.

2 is a block diagram of a distribution panel system according to an embodiment of the present invention.

As shown, the distribution panel system according to the present invention includes a voltage / current sensing module 200 and a voltage / current sensing module for sensing voltage and current in a power circuit in a main circuit breaker (not shown), a branch circuit breaker 100, and a branch circuit breaker. The switchboard controller including a digital control module 300 for outputting the detection data by detecting the voltage, current and the state of the main circuit breaker and branch breaker of the power line by digitally converting the signal output from the Sensor module 600 for outputting the sensing data through the wireless network, the gateway module 500 and the digital control module and gateway for storing the detection data output from the digital control module and the sensing data output from the sensor module and transmitting to the remote server It is configured to include a SMPS (400) for supplying power by converting an AC current into a DC current to the module.

The branch circuit breaker 100 is equipped with a current transformer CT 120 for detecting an overcurrent and an image current transformer ZCT 140 for detecting a leakage current and an arc. In other words, the current transformer 120 is mounted to the branch circuit breaker so as to pass through the power lines of the respective phases R, S, T, and N, and the image current transformer 140 through which the power lines of all the phases pass. However, in FIG. 2, only one power supply line, not all of the R, S, T, and N phases is illustrated.

The voltage / current sensing module 200 includes a sensing resistor 210 for converting an AC current signal sensed by the current transformer 120 and an AC current signal sensed by the image current transformer 140 into an AC voltage signal.

In general, since the AC voltage signal converted by the sensing resistor 210 is also small because the resistance value is very small, it is amplified by the amplifier 220. Preferably, the signal is amplified using a differential amplifier which needs to be sufficiently amplified for RMS conversion and has a very large input impedance.

In addition, the voltage / current sensing module 200 has a power supply port for sensing the power supply state of the power supply terminal line and the load terminal terminal of the branch circuit breaker, respectively, in order to determine the power supply state of the main circuit breaker and the branch circuit breaker 100. Couplers 230 and PC1 and load side photocouplers 240 and PC2 are mounted, respectively.

The power supply side photocoupler 230 includes a diode 230a connected to the power supply terminal line of the branch circuit breaker, and a transistor 230b that is electrically connected to the base voltage when the diode 230a emits light.

The digital control module 300 receives a signal output from the connector terminal or the emitter terminal of the transistor 230b to detect the power supply state of the power supply side.

In addition, the load-side photocoupler 240 is also composed of a diode (240a) connected to the load-side terminal line of the branch circuit breaker to receive power, and a transistor (240b) to which the base voltage is applied when the diode (240a) emits light. The digital control module 300 receives a signal output from the connector terminal or the emitter terminal of the transistor 240b to detect the power state of the load side.

The power supply-side photocoupler 230 includes a resistor 250 that acts as a pull-up resistor in series with the line between the power supply-side terminal line and the diode 230a.

The resistor 250, which acts as a pull-up resistor, maintains the voltage applied to the diode 230a at the power supply terminal line to prevent the malfunction of the photocoupler and the circuit breakdown that may occur when an abnormal voltage is applied.

Similarly, the load side photocoupler 240 includes a resistor 260 which acts as a pull-up resistor in series between the load-side terminal line to which power is supplied and the diode 240a. The resistor 260 also maintains the voltage applied to the diode 240a at the load-side terminal line to prevent the photocoupler from malfunctioning and circuit breakdown.

The signal is output through the emitter terminal or the collector terminal of each of the transistors 230b and 240b of the power supply side and the load side photocouplers 230 and 240 of the voltage / current sensing module 200 and configured in the digital control module 300. A plurality of pins are configured to be transmitted to the digital control module 300 through the power input and output terminal 310 formed.

3 is a diagram illustrating a data state of a power supply of a branch circuit breaker according to an exemplary embodiment of the present invention. In FIG. 3, a branch circuit breaker in which power is supplied from a power supply side is provided. Data relating to the case where the output terminals 230b and 240b are set as the connector terminals.

In other words, as illustrated, data detected through the digital control module 300 when a signal is output through the connector terminals of the transistors 230b and 240b of the power supply side and the load side photocouplers 230 and 240, respectively. Indicates.

First, when the power is normally supplied to the branch circuit breaker 100 of the distribution panel, that is, when the power state is high signal from the power supply terminal and the load terminal, both the photocouplers 230 and 240 operate and each transistor 230b. When the output signal is detected at the connector terminal of 240b), both low signals are detected.

For reference, when the output is detected at the connector stage due to the characteristics of the photocoupler, a low signal is output when the photocoupler is on, and a high signal is output when the photocoupler is off.

Accordingly, the digital control module 300 may recognize that normal power is supplied to both the load side and the power side through the detection data.

Next, when the branch circuit breaker trips and the contact of the branch circuit breaker is opened or the wiring state of the load side is bad, a low signal is output from the power supply side photocoupler 230, and the load side photocoupler 240 receives a high signal. Will come out.

Accordingly, the digital control module 300 may recognize that the contact point is opened or the wiring is defective at the load side as the branch breaker 100 trips through the detection data.

Next, when the power supply of the branch circuit breaker 100 is interrupted or when the entire wiring supply line is defective, such as when the main circuit breaker (not shown) of the distribution panel is operated, the power supply is supplied to both the power supply side and the load side of the branch circuit breaker 100. It is not fed.

In this case, a high signal is output from the power supply side photocoupler 230, and a high signal is also output from the load side photocoupler 240.

Accordingly, the digital control module 300 may recognize that the contact is open or the overall wiring state of the distribution panel is defective as the main circuit breaker of the distribution panel is tripped through the detection signal.

However, in view of the characteristics of the photocoupler, it is preferable that the output terminal of the transistors 230b and 240b of the photocouplers 230 and 240 on the power supply side and the load side is selected as an emitter terminal so that power is supplied to the power supply side and the load side. Outputting a signal and configuring to output a low signal when power is not supplied will be a way for the remote administrator to visually easily grasp the state of the distribution panel and the like.

The digital control module 300 includes a power input / output terminal 310 for receiving signals output from the power supply side photocoupler and a load side photocoupler, and a digital signal processing unit for detecting power states of the power supply side and the load side from signals received at the power input / output terminal. 320, a signal processing module 330 for detecting the quality of the AC voltage signal amplified by the amplifier, an effective value converter 340 for converting the AC voltage signal processed through the signal processing module into an effective value of direct current, the effective value Compensating the digital signal received through the AD converter 350 for converting the effective value of the DC converted by the converter into a digital signal, the digital I / O 360 to which the digital signal converted by the AD converter and the controller are input, A microprocessor 370 is included to control the branch breaker while determining.

The signal processing module 330 processes signals such as power factor (PF), total harmonic distortion (THD), harmonic analysis, power amount, and the like, and the microprocessor 370 leaks when the image current increases. If the magnitude of the current is larger than the rated value, it is judged as an overload.

At this time, the digital input / output unit 360 outputs the digital forced trip signal according to the current and voltage state determined by the microprocessor 370, and the forced trip signal is analog-converted through the control unit 320 to be input / output terminal 310. 2) is output through # 5 and penetrates the image current transformer 140 to forcibly turn off the branch circuit breaker 100.

Although it is shown that the forced trip signal penetrates through the image transformer 140, in addition to this method, a built-in MCB (Magnetic Circuit Breaker) function is provided in the branch circuit breaker, and the branch circuit breaker is switched on / off while receiving a signal to and from the branch circuit breaker. It may be configured to do so.

4 is a block diagram of an SMPS configured with an isolated AC voltage sensing circuit using a photocoupler in a distribution system according to the present invention.

Referring to FIG. 4, the SMPS 400 includes a peak voltage detector 410, a comparator 420, a triangular wave oscillator 430, an insulation and signal transmitter 440, and a smoothing and adjusting unit 450. .

The peak voltage detection unit 410 reads an effective value of the magnitude of the AC voltage or reads a peak voltage value. When the peak voltage value is set to Vpk and the rms value is expressed as Vrms, the following equation 1 is used. When the rms value is changed, the peak voltage value is proportionally changed. When the peak voltage value is read, the rms value is known.

Therefore, since the peak voltage changes linearly with the effective value of the AC voltage, the linearity of the oscillator generating the oscillation wave compared with the peak voltage should be considered.

Since the peak voltage value obtained from the primary AC power supply is a direct current (DC) value, a high frequency transformer or an optical element is used through switching, which is a general method for insulation. In order to transmit a signal from the primary side to the insulated secondary side through switching, A comparison signal is required in which the switching interval is constantly changed according to the magnitude of the DC value. For this reason, the triangular wave oscillator 430 is configured in the present invention.

In other words, since the output waveform of the standardized triangular wave signal has a linear slope during rising and falling, the width of the switching section is constantly changed in accordance with the change of the DC value acquired from the primary AC power supply. Therefore, a timer IC having an oscillation circuit excellent in linearity would be desirable.

The output of the triangular wave oscillator 430 is transmitted to the comparator 420 which performs a switching operation in comparison with the magnitude of the peak voltage in the peak voltage detector 410.

The comparator 420 compares the peak voltage detected from the AC power source, which is the primary commercial power, with the magnitude of the triangular wave generated by the triangular wave oscillator 430 through the peak voltage detector 410, and insulates and transmits the signal 440. It will generate a square wave for the operation of.

The insulation and signal transmission unit 440 may include an optical element such as a photocoupler, and transmits the signal of the primary side to the secondary side in an insulated state. At this time, since the width of the square wave increases as the magnitude of the commercial AC voltage increases, the size of the secondary side of the photocoupler increases accordingly.

The square wave signal transmitted to the secondary side through the photocoupler, which is an optical element, is converted into a DC value through an internal rectifying circuit of the smoothing and adjusting unit 450, and applies a DC voltage to the secondary system.

FIG. 5 is a circuit diagram of an insulating SMPS using a photocoupler according to the present invention, and the operation principle of the present invention will be described in more detail with reference to FIG. 5.

The peak voltage detection unit 410 is configured in the SMPS 400 that detects the magnitude of the AC voltage of the primary commercial power of the present invention and outputs the DC voltage to the secondary.

The peak voltage detector 410 includes two comparators IC1, IC2, a resistor, and a switching diode D1. When the primary commercial power supplies the AC voltage AC_IN, which is full-wave rectified, R3 is applied to + PIN of IC1. And the voltage divided by R5 is inputted, and this voltage is inputted to + PIN of the comparator 420, IC3, via IC2 serving as a buffer.

At this time, the signal generated by converting the highest value from the AC voltage inputted by the primary commercial power is full-wave rectified and input to the + PIN of the comparator 420 IC3.

IC4 of the triangular wave oscillator 430 oscillates a triangular wave by using a timer IC, and the frequencies of the triangular wave oscillated are determined by R9 and C3. The generated triangular wave is input to -PIN of the comparator IC3 of the comparator 420, and the magnitude is compared with the output voltage input to + PIN.

6 is an operation state diagram of the comparator configured in the SMPS according to the present invention, as shown in the comparator 420 is a case where the DC value of the peak voltage detector 410 is larger than the size of the triangular wave of the triangular wave oscillator 430 The output maintains the TTL high, and when the DC value of the peak voltage detector 410 is smaller than the size of the triangular wave of the triangular wave oscillator 430, the square wave is generated by the pulse width modulation method so that the output maintains the TTL low.

Therefore, the magnitude of the signal transmitted to the secondary side is changed according to the magnitude of the primary side AC voltage, and the triangular wave oscillator 430 includes a zener diode ZD1 for adjusting the magnitude of the waveform of the triangular wave. The magnitude of the waveform will also be determined.

Zener diode ZD1 is configured to conduct when the voltage above the threshold voltage is applied at Vcc_P to apply a base voltage to transistor Q1 so that power is input to IC4 while switching the transistor to generate an oscillation wave at IC4.

If the DC value of the peak voltage detector 410 is greater than the signal of the triangular wave of the triangular wave oscillator 430, a square wave is generated and the diode of the primary side of the photocoupler included in the insulation and signal transmission unit 440 is turned on so that the photocoupler is conducted. The isolated signal is transmitted to the secondary side of.

The voltage signal transmitted to the secondary side is controlled to switch the transistor Q2 to conduct, and smoothes the voltage applied to the smoothing and adjusting unit 450 by Vcc_S using a smoothing circuit composed of a diode D3 and a capacitor C4. DC voltage is obtained.

At this time, it is also possible to adjust the desired voltage by using the adjusting circuit composed of the voltage divider resistors R17, R18, and VR1 in the smoothing and adjusting unit 450.

When the Vcc voltage on the secondary side is Vcc_S and the duty ratio of the pulse width of the square wave is D, the DC value through the smoothing and adjusting unit 450 is expressed as follows.

Here, assuming the parallel and parallel resistance values of the R17, R18, and VR1 resistors, RL and R12 are represented by RH, and the charge and discharge loss of C4 is assumed to be '0', assuming that the diode D3 is ideal, the magnitude of the DC voltage signal Vdc is It may be represented as in Equation 2.

Assuming that the forward voltage drop of the diode D3 is Vf, the equation is modified as shown in Equation 3 below.

In addition, the value of this Vdc can easily output the desired voltage value by adjusting the variable resistor VR1.

As a result, the magnitude of the AC voltage is detected through the peak voltage detection unit 410 of the SMPS 400 of the present invention, and the square wave oscillator 430 compares and modulates the triangular wave oscillated to generate a square wave, and generates a square wave signal. By converting to a DC voltage value smoothly, it is possible to know the magnitude of the AC voltage with the magnitude of the DC voltage.

At this time, the DC voltage is changed at the same rate as the change of the AC voltage value, and when using a commercial AC power supply, the AC voltage value can be detected as an electrically insulated signal. There is an effect that can be usefully used in the controller.

The gateway module 500 may include a black box unit 520 for storing detection data input from the digital control module 300 and sensing data input from the sensor module 600, a communication unit 560 communicating with a remote server, The communication unit 560 is configured to transmit the black box data including the black box ID indicating the installation location of the black box unit 520 and the detection / sensing data stored in the black box unit 520 to the remote server at a predetermined time. It may include a processor 540 for controlling. In other words, the gateway module 500 stores the detection data of the digital control module 300 and transmits the data to the remote server, and also remotely monitors the environment by storing and transmitting the information from the sensor module 600 to the remote server. Do it. That is, the gateway module 500 may transmit the status information of the current distribution panel to the remote server, but the black box 520 records the past status information by time and date and stores the data by itself to analyze the cause of the accident. It can be configured to utilize as. The black box unit 520 may function as a kind of black box in the distribution panel, and may be configured to include an SD RAM. In addition, it provides a network connection method of RS485 and TCP / IP to flexibly cope with the installation location and environment, and is configured to wirelessly manage the sensing data of the sensor module 600 based on the Zigbee network protocol.

Table 1 below shows the types and ranges of data stored in the black box 520 and transmitted to the remote server.

division Symbol Real range Byte Value Remarks power MAIN CB 0/1 1BYTE 0: OFF, 1: ON Breaker Status Vrst 0-999.9 2BYTE x 10 Voltage Ir_T 0-999.9 2BYTE x 10 Current Is_T 0-999.9 2BYTE x 10 " It_T 0-999.9 2BYTE x 10 " IzT 0-9.999 2BYTE x 1000 Leakage current cos (F) 0 to 99.9 2BYTE x 10 Power factor THD 0 to 99.9 2BYTE x 10 Harmonic Distortion KVA 0-999.9 2BYTE x 10 Load power CB [1..16] 0/1 1BYTE 0: OFF, 1: ON Breaker Status Vrst_M 0-999.9 2BYTE x 10 Ir_M [1..16] 0-999.9 2BYTE x 10 Is_M [1..16] 0-999.9 2BYTE x 10 It_M [1..16] 0-999.9 2BYTE x 10 Iz_M [1..16] 0-999.9 2BYTE x 1000 cos (F) 0-9.9 2 BYTE x 10 Reserved THD 0 to 99.9 2 BYTE x 10 Reserved KVA 0-999.9 2 BYTE x 10 Reserved light CB [1..16] 0/1 1BYTE 0: OFF, 1: ON Breaker Status Vrst_L 0-999.9 2BYTE x 10 Ir_L [1..16] 0-999.9 2BYTE x 10 Is_L [1..16] 0-999.9 2BYTE x 10 It_L [1..16] 0-999.9 2BYTE x 10 Iz_L [1..16] 0-999.9 2BYTE x 1000 cos (F) 0-9.9 2 BYTE x 10 reserved THD 0 to 99.9 2 BYTE x 10 reserved KVA 0-999.9 2 BYTE x 10 reserved MPNP
sensor Safety index Safety Factor (SF) 0-100 1BYTE  0-100 Temperature Temperature -99.9 to 99.9 2BYTE x 10 Humidity Humidity 0 to 99.9 2BYTE x 10 vibration Vibration 0-10 1BYTE 0: none, 1: weak detection, 2: weak detection, 4: strong detection Flooding Water 0/1 1BYTE 0: none, 1: detection Acting Smoke 0/1 1BYTE 0: none, 1: detection

Referring to Table 1, there is an item called 'Safety Factor (SF)', which is calculated by the processor 540 as a numerical value of a state around a distribution panel. The safety index calculation is, for example, the following equation (4).

{(Temperature- 65)> 0? 1: 0} * 25 + Vibration / 4 * 25 + Water * 25 + Smoke * 25

In addition, the processor 540 stores the calculated safety index in the black box 520 and includes the black box data.

In addition, the processor 540 generates a black box data table as shown in Table 2 below.

division data Category 1 Category 2 Category 3 Category 4 Category 5 B / B
ID Item Degree city Driving Building / number Subdivision Byte One One One 2 2 Power data Item Main power light - - Byte 17 169 169 - - Sensor data Item Temperature Humidity vibration Flooding Acting Byte 2 2 One One One

Table 3 below shows the format of the black box data transmitted by the gateway module 500 to the remote server.

Item HEADER LENGTN1 LENGTH0 FRAME FOOTER BYTE (353) One One One 349 One

FRAME B / B ID Power data Sensor data CHECKSUM Degree city phrase key small Main power light Temperature Humidity vibration Flooding Acting BYTE (349) One One One 2 2  17 169 169 2 2 One One One One

Meanwhile, the processor 540 receives response data from a remote server that receives the black box data. When the response data is received, the processor 540 receives the black box data when the response message includes the resend request message. The communication unit 560 is controlled to retransmit to the remote server. Table 4 below shows the format of the response message.

Item HEADER LENGTN1 LENGTH0 FRAME FOOTER BYTE (353) One One One 349 One

FRAME B / B ID RESPONSE CHECKSUM Degree city phrase key small Ok / NG Rej BYTE (12) One One One 2 2 One One One

If the server does not receive a packet or there is an error, the server sets OK / NG and Rej items to '1' and transmits a response message to the gateway module 500 to request data retransmission. If Rej is reset to '0', the gateway module 500 completes data transmission.

The sensor module 600 includes a heat sensor 610, a smoke sensor 620, a immersion sensor 630, a vibration sensor 640, and an outlet (outlet) contact failure detection sensor 650. Is transmitted to the gateway module 500 in a Zigbee wireless communication method.

The heat sensor 610 detects a fire by sensing a temperature in the air, and a humidity sensor (not shown) detects a fire by sensing a humidity in the air, and the smoke sensor 620 detects a smoke in the air. Detects, the immersion sensor 630 is configured to detect the flooded state of the place where the distribution panel is installed to prevent accidents due to short circuit.

In addition, the vibration sensor 640 to detect the vibration caused by the earthquake or the collapse of the building to prevent a short circuit accident or fire.

7A and 7B are state diagrams of outlets connected to plugs, and FIG. 8 is an operational configuration diagram of an outlet contact failure detection sensor configured in a sensor module mounted on a digital distribution panel according to the present invention.

As shown in Figures 7a, 7b, the outlet of the present invention is configured with a connection for various power supply, the plug is connected to the connection.

In other words, the power input to the outlet is outputted to the plug, and in this structure, the contact resistance is caused due to the loosening between the connection portion A of the outlet and the connection portion B of the plug. Therefore, due to this, a voltage difference is generated and contact failure occurs.

The outlet contact failure detection sensor 650 detects such a degree of contact failure. When the contact failure occurs and the contact resistance component increases, the voltage of the outlet increases, and thus the increase of the voltage exceeds a predetermined value. Since the risk of fire is caused by the outlet melting due to the heat generated, the outlet contact failure detection sensor 650 continuously detects the difference in the input and output voltage of the outlet.

The outlet contact failure detection sensor includes a voltage detector 651 for detecting the voltage of the outlet, an amplifier 652 for amplifying the signal waveform output from the voltage detector, and a reference for generating a reference voltage for the voltage state of the contact failure of the voltage detector. The voltage generator 654 compares the output signal of the amplification unit with the output signal of the reference voltage generator to determine the increased voltage amount, and digitizes the increased voltage amount determined by the comparator. It comprises a communication unit 656 for transmitting to 500.

Preferably, the temperature detection unit for detecting the contact resistance due to the temperature change by sensing the temperature of the connection of the outlet may be further added. When the temperature detector is provided with a temperature sensor indicating a temperature higher than a predetermined reference value, the temperature detector may generate a signal to prevent a fire due to contact resistance.

First, when a minute voltage is generated due to poor contact or oxidation of the outlet, the voltage detector 651 recognizes a minute signal waveform on the secondary side of the transformer using a transformer. The detected signal is amplified to a predetermined size through the amplifier 652 and input to the comparator 653.

At this time, the comparator 653 receives the signal amplified by the amplifier 652 and the reference signal generated by the reference voltage generator 654 to output the increased voltage change amount.

The output voltage is digitized and transmitted to the gateway module 500 through the output terminal 655 and the communication unit 656.

If it is not easy to install each sensor of the sensor module 600 individually, it should be integrated and operated to have a single ID, and it is easy to install in the environment or for the purpose of installing at the optimum position for each sensor In case of selecting the location individually, it can be installed and operated to have individual ID.

ZigBee stands for "wireless short-range standard communication technology with low power, low cost, and ease of use, and standardizes higher protocols and applications based on the PHY layer and MAC layer of the IEEE802.15.4 standard. The network can be suitably applied to a distribution board system such as the present invention, which is rare.

The distribution panel system of the present invention is not limited to the above-described embodiments, and can be implemented in various modifications within the range allowed by the technical idea of the present invention.

1 is a block diagram of a three-phase wiring circuit breaker equipped with a micro switch for detecting a power supply state installed in a conventional distribution panel.

2 is a block diagram of a distribution panel system according to an embodiment of the present invention.

3 is a diagram in which the power state of the branch circuit breaker installed in the digital distribution panel according to the present invention is data.

4 is a block diagram of an insulated SMPS using a photocoupler in a remote switchboard system according to the present invention.

5 is a circuit diagram of an insulating SMPS using a photocoupler according to the present invention.

6 is an operational state diagram of the comparator unit configured in the SMPS according to the present invention.

7A and 7B are state diagrams of outlets connected to plugs.

8 is an operational configuration of the outlet contact failure detection sensor configured in the sensor module mounted on the digital distribution panel according to the present invention.

* Description of the symbols for the main parts of the drawings *

100: branch breaker 120: current transformer

140: current transformer 200: voltage / current sensing module

210: sensing resistance 220: amplifier

230: power supply side photocoupler (PC1) 240: load side photocoupler (PC2)

300: digital control module 310: power input and output terminal

320: control unit 330: signal processing module

340: RMS converter 350: AD converter

360: digital input / output 370: microprocessor

400: SMPS 410: peak voltage detection unit

420: comparator 430: triangular wave oscillator

440: insulation and signal transmission unit 450: smoothing and adjusting unit

500: gateway module 520: data storage

600: sensor module 610: thermal sensor

620: smoke sensor 630: immersion sensor

640: vibration sensor 650: outlet contact detection sensor

651: voltage detector 652: amplifier

653: communication unit 654: reference voltage generating unit

655: output terminal 656: communication unit

Claims (6)

A distribution panel controller detecting current and voltage of the power line and ON / OFF state of the circuit breaker and controlling the circuit breaker; A sensor module composed of at least one sensor installed around the distribution panel; And A black box unit for storing detection data input from the distribution panel controller and sensing data input from the sensor module, a communication unit transmitting a message to a remote server using the data stored in the black box unit, and receiving a response message; Including a gateway module including a processor for controlling the communication unit, And the processor controls to transmit a message including the black box unit ID field, the power data field, and the sensing data field to a remote server when a predetermined period and a specific event occur. The method of claim 1, Further comprising a SMPS module for supplying power to the switchboard controller and the gateway module, The SMPS module is a distribution panel system, characterized in that for supplying power by converting the AC voltage of the power line supplied to the distribution panel system to direct current. The method of claim 2, The power data field, The number of bits of a certain length is allocated to each of the supply status of the main power supply, the supply status of the lamp, and other supply status data of the power source power. The sensing data field, Distribution board system, characterized in that the number of bits of a predetermined length is assigned to the sensing data of each of two or more different sensors. The method of claim 3, wherein the processor, Distribution panel system, characterized in that for determining whether to re-send according to the value of a specific field included in the response message sent to the remote server. The method of claim 3, wherein The sensor module is a temperature sensor for detecting the temperature in the air, a humidity sensor for detecting the humidity in the air, a vibration sensor for detecting the vibration caused by the earthquake or the collapse of the building, the immersion sensor and air to detect the inundation state of the place where the distribution board is installed At least two or more kinds of smoke sensors for detecting smoke in the air, At least one of the different types of sensing data indicates a class of the sensed value. The method of claim 3, wherein the processor calculates a safety index using sensing data input from a sensor module, and stores the safety index in the black box unit and includes it in a message transmitted to a remote server. Distribution panel system.

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