TW201503518A - Electric appliance load monitoring and controlling method - Google Patents

Abstract

An electric appliance load monitoring and controlling method is applicable to monitoring and controlling an electric appliance load that accesses the commercial power via a socket. A detection module is electrically connected with the socket for detecting parameters of the electric appliance load, and the resulting detection parameters are uploaded by the monitoring and controlling unit to the database of the server for identifying the electric appliance load and analyzing electric properties for safe use of the electric appliance load. Samples within a period of time are analyzed to acquire a real load current (Ir) and an imaginary load current (Ij) in normal use condition of the electric appliance load. When the real load current (Ir) and imaginary load current (Ij) used by the electric appliance load exceed a preset load boundary, it indicates that the electric appliance is likely abnormally used or enters the aging and failure stage, in this way, the monitoring and controlling unit is used to control the switch unit disposed between the socket and the commercial power to cut the power of the electric appliance load so as to prevent possible risks.

Description

Electrical load monitoring and control method

The invention relates to an electrical load monitoring and control method, in particular to a power management according to the characteristics of each electrical appliance, determining whether the electrical appliance has a load overload or aging failure, making a power failure judgment and preventing danger, and notifying the user by a message that the Improve power efficiency and safety.

Modern technology is developing rapidly, the application of electronic devices is becoming more and more diversified, and more and more electronic devices are used in home life. However, the power sockets in the home are limited, so the application of power extension lines becomes more and more important.

In order to improve the power security of the power extension cable, how to remotely monitor the power extension cable has become a trend. Some products try to install each extension cable with a network connection device to remotely monitor the power supply extension through the network connection. Line, this really brings great practicality to the application of the power extension cable.

In addition, in order to save energy, it is becoming more and more common to set up Smart Meters and structure Advanced Metering Infrastructure (AMI). Advanced meter systems can be used to replace traditional manual meter reading and improve the efficiency of energy use. According to the research, if the user can know the total power consumption situation in the home, the user will spontaneously save energy. If you can further know the power usage of each appliance in the home, the user can know more. How to save electricity.

Moreover, at present, research and development on the reduction of standby power by electronic products, Although it is known that there are quite a lot of standby related patents at home and abroad, for the electrical load monitoring and control technology that does not have the power consumption characteristics of household appliances, combined with the electrical behavior mode of electrical appliances and the prediction mode of electrical environment parameters, it can be predicted according to each The trend of different power consumption of electrical appliances is to judge whether the electrical appliance has a load increase or aging failure, and is used to judge the power failure and prevent danger.

Therefore, in order to solve the above disadvantages, the object of the present invention is to provide an electrical load monitoring and control method, and design a set of sockets having electrical identification and monitoring control functions by using each household appliance in the environmental space to be connected to a power source. Determine whether the appliance has a load overload or aging failure, make a power failure judgment and prevent danger, and notify the user by message.

In order to achieve the above object, the present invention discloses an electrical load monitoring and control method for monitoring and controlling an electrical load of a commercial power through a socket, the method comprising: electrically connecting the socket through a detecting module to detect an electrical load parameter, Measuring power factor (mPF, measured power factor), measuring effective voltage value (mVrms, measured Vrms) and measuring power (mWatt, measured Power), and outputting the test parameter result to a monitoring control unit; the monitoring control unit The parameter is uploaded to a database of a server through a communication unit, and is used as an electrical load identification and analyzes the electrical energy characteristics when the electrical load is safely used, and analyzes sampling for a period of time to obtain an electrical load under normal use conditions. Real load current (Ir) and imaginary load current (Ij), and set the load boundary of real load current (Ir) and imaginary load current (Ij) when the electrical load is in normal use; and the real load current when the electrical load is used ( When the Ir) and the imaginary load current (Ij) exceed a set load boundary, the control unit is controlled by the monitoring control unit. A switch unit between the socket and the mains to prevent the danger of powering off the electrical load.

Wherein, the relationship between the real load current (Ir) and the imaginary load current (Ij) and the measured power factor (mPF), the measured effective voltage value (mVrms), and the measured power (mWatt) is: Ir=(mWatt× 5) / mVrms; Ij = Ir × ((1000000 - mPF ² ) ^0.5 ) / mPF.

Wherein, the electrical appliance identification is uploaded to the database of the server according to the electrical load parameter measured by the detecting module, and the real load current (Ir) of the electrical load obtained by the database of the server is calculated and processed. The imaginary load current (Ij) is the area where the real load current (Ir) is the ordinate and the imaginary load current (Ij) is the coordinate system of the abscissa to obtain the electrical load characteristics, and the data type is estimated by comparing the data base. Then ask the user to get confirmation.

The sampling of the monitoring control unit is sampled once every 3 to 5 seconds, and the judgment is based on at least one day of use, or the daily, weekly, monthly, and annual sampling ranges are used to analyze the electrical energy characteristics of the electrical appliance during safe use.

The further user connects to the database of the server, and the server calculates the load boundary of the electrical load obtained by the server, and the boundary condition indicates that the monitoring control unit monitors, and disconnects when the load boundary is exceeded. The power supply of the electrical load is used to judge whether the electrical load is overloaded or aged, and the user is alerted.

The invention has the advantages that the detection module reads the electrical load characteristics and uploads the data to the remote server, and detects the characteristic measurement power factor (mPF), the measured effective voltage value (mVrms) and the measured power of the electrical appliance. (mWatt), the electrical characteristics are collected by the server, and the daily, weekly, monthly and annual sampling ranges are used to analyze the electrical energy characteristics of the safe use of the electrical appliance, and the user is informed of the safe use range of the electrical energy, and the user is informed Protection probability level; after the analysis of the electrical characteristics is completed, and the user's consent is obtained, when the electrical appliance is used again in the electrical energy measuring socket, the condition of the electrical appliance is immediately monitored, and when the electrical energy measuring socket detects that the electrical appliance is safer than the electrical appliance When using the energy range interval, the energy metering outlet will immediately block the outlet Power and alert the user.

110‧‧‧ plug

210‧‧‧Test module

220‧‧‧Switch unit

230‧‧‧Monitoring Control Unit

240‧‧‧Communication unit

300‧‧‧Server

310‧‧‧Database

410‧‧‧Electrical load characteristics

420‧‧‧ load boundary

1 is a schematic diagram of a system in accordance with an implementation of the present invention.

Figure 2 is a schematic illustration of the coordinates of the implementation of the present invention.

3 is a schematic view showing the coordinates of an embodiment of the dehumidifier of the present invention.

The detailed description of the present invention and the technical description of the present invention are further illustrated by the embodiments, but it should be understood that these embodiments are for illustrative purposes only and are not to be construed as limiting.

Please refer to FIG. 1 , which is a schematic diagram of a system according to an embodiment of the present invention. The invention discloses an electrical load monitoring and control method, which is applied to monitor and control an electrical load (not shown) for obtaining a commercial power through the socket 100. Generally, the power socket of the home is limited, so when the power extension cable is used as an implementation, the plug 110 is transmitted through the plug. Use the power outlet plugged into your home to get the mains.

The method of the present invention includes: electrically connecting the socket 100 through a detecting module 210 to detect a parameter of an electrical load, and the so-called parameter is a measured power factor measured by a real measurement - followed by a shorthand mPF Representation, measurement of effective voltage value (measured) - followed by mVrms as a shorthand for representative, and measured power (measured power) - followed by mWatt as a shorthand for the representative. Among them, 1000mVrms=1Vrms, Vrms is the effective voltage value; 1000mPF=1PF, PF system power factor; 200mWatt=1Watt, Watt power (Power) unit “Watt”.

The detection module 210 outputs the detection parameter result to a monitoring control unit 230. The monitoring control unit 230 uploads the parameter to the database 310 of the server 300 through a communication unit 240, and performs the identification and analysis of the electrical load. The electrical characteristics of the electrical load when used safely, and analyze the sampling for a period of time, The actual load current (Ir) and imaginary load current (Ij) of the electrical load under normal use conditions.

The sampling of the monitoring control unit is sampled once every 3 to 5 seconds, and the use condition of at least one day is used as a basis for judging, or the sampling range of the day, week, month and year is used to analyze the electric energy characteristics of the electric appliance during safe use. .

Moreover, the relationship between the real load current (Ir) and the imaginary load current (Ij) and the measured power factor (mPF), the measured effective voltage value (mVrms), and the measured power (mWatt) is: Ir=mWatt×5 /mVrms; Ij=Ir×((1000000-mPF ² ) ^0.5 )/mPF.

Referring to FIG. 2, the electrical identification is uploaded to the database 310 of the server 300 according to the electrical load parameters (mVrms, mPF, mWatt) detected by the detection module 210, and the database of the server 300 is used. The real load current (Ir) and the imaginary load current (Ij) of the electrical load obtained by the calculation process of 310 are used in the area where the real load current (Ir) is an ordinate and the imaginary load current (Ij) is a coordinate system of the abscissa. The electrical load characteristic 410 is obtained, and the data warehouse 310 is compared to obtain an estimate of the electrical type, and the user is asked to confirm.

The load boundary 420 is further set by the specification in the server 300. For example, one of Ir and Ij deviates from the normal value by more than ±20%, and the range of ±20% is set by the comparison data type of the identification library, or is set by the user. The load boundary 420 of the real load current (Ir) and the imaginary load current (Ij) when the electrical load is normally used.

In addition, when the real load current (Ir) and the imaginary load current (Ij) when the electrical load is used exceed the set load boundary 420, the control unit 230 controls the switch unit 220 between the socket 100 and the commercial power. The power failure of the electrical load is prevented by the switch unit 220; that is, when the detection module 210 on the socket 100 detects that there is a safe use power range exceeding the electrical load, the socket 100 will immediately Block the power of the outlet and alert User.

Further, in the implementation of the present invention, the user can access the database 310 of the server 300 through the mature network technology, and the server 300 calculates the processed load boundary 420 of the electrical load, and The boundary condition indicates that the monitoring control unit 230 performs monitoring, and when the load boundary is exceeded, the power of the electrical load is disconnected to determine whether the electrical load is overloaded or aged, and the user is alerted, such as a short message or a mobile Internet device; The above warnings can be removed through Internet devices such as mobile phones, lithographs, and personal computers.

Taking the electrical load as a common dehumidifier in the home, for example, when the dehumidifier is used for a long time, the compressor wears or the starting capacitor fails due to the old failure, the capacity of the starting capacitor will be reduced to failure, and the starting capacitor will decay to a certain level. To the extent that the compressor will not start, the power consumption will increase significantly at this time. At this time, it is too late to judge the electrical load and it is impossible to prevent the danger.

However, the method of the present invention can find and notify the user to prevent the process during the failure of the electrical appliance. For example, the dehumidifier model is 150/165 W, and the starting capacitor is 25 uF. The simulation is carried out for a long time, and the capacitance value thereof is The time decreases, which is 25uF to 20uF, 20uF to 15uF, 15uF to 10uF, 10uF to 5uF, and 5uF to 0uF. When the capacitance is less than 5uF, the compressor obviously cannot start, and the power consumption rises significantly. 600W, the detailed test values are as follows.

According to the invention, our method is to detect the real load current (Ir) and the value of the imaginary load current (Ij), the real load current (Ir) and the imaginary load current (Ij) of the different starting capacitor (uF) capacitance values are shown in the coordinate map position. When the starting capacitor (uF) fluctuates, the load boundary 420 is differently set for each electrical product category. For example, the wet machine model is 150/165W. When the starting capacitor is 25uF, Ir+Ij=1.309-0.387 j=1.365, the load boundary 420 is set to deviate from 20% to exceed the safe use range, that is to say, if Ir or Ij changes beyond 0.27, an abnormal alarm is issued, that is, when the starting capacitor (uF) is 15uF, there will be warning use. By.

Taking the electrical load as an example of a common electric fan in a general household, Vrms=110V, power (Power) is 50.43Watt, PF=-0.94, Ir=0.458, Ij=-0.166. Ir+Ij=0.458-0.166j=0.487, the load boundary 420 is set to deviate from 20% to exceed the safe use range, that is to say, if Ir or Ij changes more than 0.0975, an abnormal alarm is issued.

When the fan is unable to rotate due to dust or shaft wear, the power consumption becomes 60.9Watt, Vrms=110V, PF=-0.94, Ir=0.553, Ij=-0.2. After analysis, the actual load current ( The Ir) and imaginary load current (Ij) characteristic changes exceed 20% (Ir or Ij changes more than 0.0975), and the monitoring device will first power off and send a message to the user after the device is alerted.

The invention has the advantages that the detection module reads the electrical load characteristics and uploads the data to the remote server, and detects the characteristic measurement power factor (mPF), the measured effective voltage value (mVrms) and the measured power of the electrical appliance. (mWatt), the server collects the characteristics of the electrical appliance, and analyzes the electrical energy characteristics of the safe use of the electrical appliance by using the daily, weekly, monthly and annual sampling ranges, and informs the user of the safe use range of the electrical energy, and informs The protection probability level is set. When the energy metering socket detects that there is more than the safe use power range of the appliance, the power metering socket will immediately block the power of the socket and alert the user. In this way, it is possible to achieve safety protection during the abnormal use of the appliance or abnormal aging, and increase the safety of the appliance. all.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.

110‧‧‧ plug

210‧‧‧Test module

220‧‧‧Switch unit

230‧‧‧Monitoring Control Unit

240‧‧‧Communication unit

300‧‧‧Server

310‧‧‧Database

Claims (6)

An electrical load monitoring and control method is applied to monitoring and controlling an electrical load of a commercial power through a socket, and the method comprises: electrically connecting the socket to a parameter for detecting an electrical load through a detecting module, and measuring a power factor (mPF) and a quantity Measuring the effective voltage value (mVrms) and measuring power (mWatt), and outputting the detection parameter result to a monitoring control unit; the monitoring control unit uploads the parameter to a server database through a communication unit, and performs Identify and analyze the electrical characteristics of the electrical load during safe use, and analyze the sampling for a period of time to obtain the real load current (Ir) and imaginary load current (Ij) of the electrical load under normal use conditions, and set the electrical load. The load boundary of the real load current (Ir) and the imaginary load current (Ij) during normal use; and the real load current (Ir) and imaginary load current (Ij) when the electrical load is used exceeds the set load boundary. The control unit controls a switch unit between the socket and the mains to prevent the electrical load from being powered off. The electrical load monitoring and control method according to claim 1, wherein the real load current (Ir) and the imaginary load current (Ij) and the measured power factor (mPF), the measured effective voltage value (mVrms), and The relationship of the measured power (mWatt) is: Ir = mWatt × 5 / mVrms; Ij = Ir × ((1000000 - mPF ² ) ^0.5 ) / mPF. The electrical load monitoring and control method according to claim 1, wherein the electrical identification is uploaded to the database of the server according to the electrical load parameter measured by the detecting module, and the data of the server is used. The real load current (Ir) and imaginary load current (Ij) of the electrical load obtained by the library calculation process are in the area of the real load current (Ir) and the imaginary load current (Ij) coordinate system, to obtain the electrical load characteristics, and the ratio The database is estimated by the type of appliance, and the user is asked to confirm. For example, the electrical load monitoring and control method described in claim 3, wherein The real load current (Ir) and imaginary load current (Ij) coordinate system is the real load current (Ir) is the ordinate, and the imaginary load current (Ij) is the abscissa. The electrical load monitoring and control method according to claim 1, wherein the further user connects to the database of the server, and the server calculates the load boundary of the electrical load obtained by the server, and the boundary is The condition indicates that the monitoring control unit performs monitoring, disconnects the power of the electrical load when the load boundary is exceeded, and alerts the user. The electrical load monitoring and control method according to claim 1, wherein the sampling of the monitoring control unit is sampled once every 3 to 5 seconds, and the judgment is based on at least one day of use.