JPH11237414A - Electric power monitor information terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric power monitor information terminal which can attract the attention of general consumers to the saving of energy by displaying information regarding power consumption that general consumers hard to grasp in an easy-to-see style. SOLUTION: This terminal has a current measuring means 1, a timer means 2, an information input means 6, a 1st storage means 4, a 2nd storage means 5, an information processing means 3, and a display means 1, and the information means 3 has a 1st information processing function for processing parameters and/or arbitrary arithmetic result information into 1st arithmetic result information, a 2nd information processing function for obtaining a predicted value estimated from the arithmetic result information and/or arbitrary arithmetic result information as 2nd arithmetic result information, and a 3rd information processing function for reading the arithmetic result information and/or arbitrary arithmetic result information out, performing a comparing process, and regarding the result as 3rd arithmetic result information.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power monitoring information terminal used, for example, in ordinary households. More specifically, the present invention relates to a power monitoring information terminal used in ordinary households. The present invention relates to a power monitoring information terminal that can be displayed on a monitor screen of a television or the like in an easy-to-understand form such as an amount of power and an electricity rate.

[0002]

BACKGROUND OF THE INVENTION Today,
Interest in the energy problem is increasing, and the relationship between the amount of power consumed and the amount of power supplied is also an important concern as one of the problems. Considering this problem from the power supply side, that is, from the power company's point of view, the power supply facilities need to have enough facilities to handle the peak of the maximum consumption. It is necessary to prepare much larger equipment. Power consumption due to cooling and other factors in summer in recent years has been rising, and planning for future power production with this trend may lead to failure.

[0003] In addition, when constructing a new hydroelectric power plant, most of the areas where construction is possible in Japan have already been developed, and the construction of a new nuclear power plant is in a situation that cannot be entrusted.

[0004] Therefore, it has become a major problem how to manage well and keep the increase in power consumption within the range of the current power production equipment capacity, and a publicity enlightenment on energy saving has already been made in television commercials and the like. Activities are actually taking place.

[0005] However, the power consumption in a general household can be checked by a meter installed in each home by a power company. However, the power consumption is hardly noticeable and only the total power consumption is shown. On the other hand, when energy saving is considered, it is a fact that a means that constantly evokes the spirit of energy saving and discloses accurate information can be a more continuous energy saving measure than a temporary advertisement.

[0006] Considering the psychology of consumers in practice, it is possible to elevate a higher awareness of energy saving by measuring the state of continuous power consumption and accurately grasping the current state of power consumption at any time. In some cases, it can be believed that information that can grasp the difference between the actual power rate and the target value is a great motivation for energy saving.

[0007] That is, in the past, in general households, as a means of knowing the amount of power consumption, a bill of electricity bill and a result of meter reading arrived one month later was the only information. Power consumption is always monitored in real time, and current power consumption and monthly power consumption can be predicted, and information on whether or not the effect of the measures taken has been immediately reflected as a numerical value is displayed. If you can know whenever you want to know it, it can be expected that it will be useful to implement more concrete energy saving measures and to raise the necessity.

On the other hand, as a device for measuring electric power, in addition to a meter attached to each home by an electric power company, a current value is measured by using an electromagnetic force generated by a current flowing in an electric wire, and the information is also collected. There is also a so-called clip-type power meter that measures power consumption. However, such a meter is merely a function for power inspection, and has a function of displaying information that calls attention to energy saving, such as measuring a power consumption and the like by attaching to a general consumer at home. Not something. Specifically, the information of the current flowing in the electric wire is substituted into the formula defined in the program, and the power, the integrated power consumption during the measurement, and the like are displayed only as specific numerical values. The figures are not such that the average consumer without knowledge of electricity can understand power consumption and call attention to energy conservation.

The present invention provides a power consumption monitoring terminal equipped with various functions from the above viewpoint and capable of freely converting measured power consumption into a form easily understood by ordinary consumers and transmitting the power consumption in real time. The purpose is to do so. At the same time, it is not limited to the current power consumption monitoring function, and as a more effective means of transmitting information transmitted by electric power companies etc. than the method using current media such as TV, using a TV receiver for home use as a medium It is also an object to provide a means of communicating easily to consumers.

[0010]

Means for Solving the Problems As a result of intensive studies to solve such a problem, the present inventor has measured an AC current value, made a processing calculation, and continually transferred the measurement result to a monitor such as a home television screen. The knowledge that can solve the above problem was obtained by a power monitoring information terminal that can be displayed, and the present invention has been completed.

According to the present invention, a current measuring means for measuring a current flowing between a commercial power supply and a load utilizing the commercial power supply to generate current value information as a first parameter, and a time measuring information as a second parameter And information input means for inputting an arbitrary third parameter necessary for determining an arbitrary function and / or performing arithmetic processing;
First storage means for storing operation data including an initial value of the parameter and an operation processing program, at least an area functioning as an operation processing memory, first to third parameters, and an operation result calculated by the information processing means Second storage means comprising an area functioning as an operation result storage memory for storing information and three operation result information to be described later based on an operation processing program using the parameters 1 to 3 and operation data as operation parameters. Information processing means having an information processing function for deriving the calculation information, and display means for visually displaying at least a part of the calculation result information and the calculation parameter. The first information processing function has at least the first parameter and / or Alternatively, a function is provided in which arbitrary operation result information stored in the second storage means is processed and used as first operation result information. The second information processing function, the first
And / or an expected value estimated from arbitrary operation result information stored in the second storage means as the second operation result information. A function of reading out first or second operation result information and / or arbitrary operation result information stored in the second storage means, performing a comparison process, and using the result as third operation result information. The gist is a power monitoring information terminal characterized by the following.

A feature of the present invention is to measure the current flowing between a commercial power supply and a load such as an electric appliance used in the home, and process the information by linking it with other parameters to provide general consumers with the information. Convert it into a meaningful form, anticipate future results, compare this information,
The point is that information about power consumption can be provided by displaying visually.

That is, the conventional clip-type power meter only has a function of calculating a certain value based only on the obtained current information based on a formula defined in a program. The present invention is characterized in that the obtained current information and other parameters can be processed in association with each other.For example, by using an AC current value sensor, the amount of AC current flowing through a household power line is extracted as current information, and the current is extracted. The information is calculated together with other parameters such as timekeeping information, and is converted into an easily understandable value, such as the execution power, the accumulated power in a given period, and the expected future power consumption. Also,
By storing these as needed, they can be displayed with visual elements such as comparison of these calculation results and graphing. This is a function provided by the present invention to check, for example, the power consumed or expected in home life, and has a different purpose of use from a conventional clip-type power meter.

Therefore, even a person who has no knowledge of electricity can accurately grasp the amount of power based on the display result, and can easily know data such as the amount of power consumed in the home and the electricity rate. . Therefore, it is expected that attention to energy saving will be raised by confirming such information.

In the present invention, it is preferable to use a monitor screen such as a television apparatus which is often noticeable in a normal household life as a medium for displaying the calculation result.

[0016]

FIG. 1 is a schematic diagram showing a basic configuration of a power monitoring information terminal according to the present invention. The present power monitoring information terminal includes a current measuring unit 1, a timing unit 2, an information processing unit 3, a first
Storage means 4, a second storage means 5, an information input means 6, and a display means 7.

The current measuring means 1 has a function of measuring a current value flowing through the household power line and transmitting current value information as a first parameter to the information processing means 3. The current measuring means is not particularly limited, but it is preferable to use an AC current sensor having a structure as shown in FIG. 2 as an example.

FIG. 2 is a schematic diagram showing the configuration of the current measuring means. Reference numeral 11 denotes a magnetic field detection core, and 12 denotes a detection coil. The magnetic field detection core 11 detects a magnetic field generated when a current flows at an arbitrary moment in the power supply line, and the detection coil 12 transmits the strength of the magnetic field to the information processing means as a detection signal of a voltage level of power consumption. It has the role of doing. The magnetic field detection core 11 has an openable and closable structure. When used, the magnetic field detection core 11 is attached so as to sandwich the power supply line between the magnetic field detection core 11 and used. Although the current value information obtained by this sensor has a sine wave shape, it may be converted into a direct current and then sent to the information processing means, or may be transmitted as a sine wave and the The program may be converted into an effective value and processed by a program controlled by the means.

The timekeeping means 2 has a function of measuring timekeeping information such as time and date and transmitting it to the information processing means as a second parameter. The clocking means 2 may be one that sends absolute time information independently like a clock circuit. For example, a system clock that is relative time information is cumulatively calculated and converted to absolute time. May be used.

The information processing means 3 controls the entire system,
The calculation is performed in a comprehensive manner. Specifically, the control is performed on the basis of a calculation program using control of the entire system and calculation parameters including first to third parameters and calculation data, and calculation result information is calculated. The main role is to perform image processing to display. Information processing means 3
May be composed of a plurality of semiconductor elements, or may be integrated in one semiconductor element. Further, it may have an amplifier or an analog-to-digital converter for inputting the first to third parameters.

It is necessary that the information processing means 3 has first to third information processing functions.
Hereinafter, these functions will be described.

The first information processing function requires a first parameter, which is current value information, as required.
The information of the parameters and the operation data is calculated to change to operation result information such as effective current, power consumption, and integrated power consumption. Further, by storing the calculation result information itself, these can be used as further calculation result information. Specifically, as the calculation result information, for example, based on the calculation result information of the power consumption that has been calculated and stored beforehand, it is converted into an electricity bill derived therefrom, or the emission amount of carbon dioxide is obtained. This information can also be displayed on the screen as calculation result information. The actual measurement value obtained from the actual parameter and the operation result information converted from the actual measurement value are referred to as first operation result information in this specification.

The second information processing function corresponds to the first information processing function already obtained.
Is used to calculate the second calculation result information which is a future expected value obtained from the above. Specifically, for example, when there is first calculation result information regarding the power consumption amount before a certain period elapses,
Assuming that the power consumption after the period elapses is proportional to the power consumption information up to the middle and the time, and predicting the power consumption after the period, which is future information, This is a function for calculating the calculation result information of the power consumption. In this specification, the information on the expected future value of the first calculation result information calculated based on the actually measured values obtained from the actual parameters is referred to as second calculation result information in this specification.

The third information processing function corresponds to the first information processing function already obtained.
And the second calculation result information and / or the stored information are compared as needed, and the calculation is performed so that the result can be shown visually. For example, compare the first calculation result information, which is the actually measured value of the power consumption in a certain month of this year, or the second calculation result information, which is the expected value of the power consumption at the end of the month, with the power consumption of the same month last year. , To derive the difference in electricity rates calculated from these,
This is a function that uses this as calculation result information.

The third information processing function can also compare the second amounts of power consumption. For example, second calculation result information that predicts annual power consumption from first calculation result information regarding power consumption up to April of a certain year,
The information includes a comparison between the first calculation result information on the power consumption amount up to June of the same year and the second calculation result information that predicts the annual power consumption amount. As described above, a plurality of pieces of the first calculation result information and the second calculation result information are compared, and information obtained therefrom is referred to as third calculation result information in this specification.

The third operation result information may be not only a comparison of arbitrary operation result information but also a comparison between a parameter and operation result information. For example, it is also possible to set the electricity rate at the end of a certain period as a third parameter, compare this with the power consumption and its expected value, and set a message corresponding to the third parameter as the calculation result information. it can.

[0027] The power monitoring information terminal of the present invention is characterized in that:
It is preferable that a plurality of pieces of calculation result information be displayed on the screen, such as not only displaying the third calculation result information alone but also displaying a transition of power consumption in a graph. .

The first storage means 4 mainly stores an arithmetic processing program and operation data including an initial value of a third parameter. The first storage means 4 is preferably constituted by a nonvolatile ROM or the like. In particular, since the purpose of the present power monitoring information terminal is to provoke energy saving, it is not preferable that the terminal itself requires a large amount of power consumption. Therefore, it is possible to use a magnetic memory such as a hard disk or a flash memory, but in consideration of not only a large amount of power consumption but also a slow reading and a function of the present storage means that rewriting is not particularly required. It is not preferable to use this storage means.

The second storage means 5 not only functions as an operation processing memory required for operations and processing, but also stores first to third parameters and operation result information. When message information is input, this message is also stored. The second storage means has an area functioning as an operation processing memory and an area serving as an operation result storage memory as described above. Note that these need not be constituted by a single resource, but may be a plurality of resources for each area, and the operation result storage memory may be detachable to store information. Also,
It may be a memory configured by a RAM or the like, or a register file configured by a flip-flop or a latch. When the operation result storage memory is a detachable memory, a magnetic memory can be used without any problem.

The information input means 6 serves as an interface for inputting switch information for determining an arbitrary function and a third parameter. For example, a mouse or a controller is used to determine an arbitrary function, and is used as an interface for determining displayed calculation result information or inputting a set value of an electricity bill. Further, it has a function as an interface for measuring temperature information by connecting a temperature sensor, for example, and inputting it as a third parameter to the information processing means. In this specification, information input from the information input means is referred to as a third parameter. There is no particular problem even if there are a plurality of third parameters. The various sensors and controllers connected to the information input means do not need to be attached to the power monitoring information terminal. For example, the input may be performed by a power company through remote processing via a telephone line. Good.

The display means 7 has a function of creating a signal for displaying the operation result information obtained by the information processing means 3. Specifically, when connected to a home television device, the signal is converted into a video signal or an RF signal. For example, when the signal is displayed on a liquid crystal panel, a signal corresponding to a liquid crystal display is generated. The medium on which the signal generated by the present means is displayed is not particularly limited. For example, it may be displayed on a home television as described above, or may be displayed on a liquid crystal screen attached to the main body. Further, the operation result information may be displayed by an electric light display attached to the main body, such as a light emitting diode, but it is difficult to achieve the above-described function of the present power monitoring information terminal. Is optimally used as a display medium.

The power monitoring information terminal may have a voice generating means (not shown). The type of the sound generating means is not particularly limited, but is most preferably a processor that generates a sound by pulse code modulation, for example. It is preferable that the voice generating means generates a voice in accordance with the calculation result information under the control of the information processing means. For example, when the power is excessively used, a warning sound may be generated. For example, when the power amount exceeding a set value is used, a warning to that effect may be issued.

Although not shown in the present embodiment, it is preferable to provide a sub power supply device in consideration of, for example, a power failure. It is preferable to use a rechargeable battery or the like as the sub power supply device.

Next, the system arrangement of the present invention will be described.

FIG. 3 is a schematic diagram showing an example of a system arrangement using the power monitoring information terminal of the present invention.

In the power monitoring information terminal of the present invention, for example, the current measuring means 1 is attached near the power meter, and the current value information as the first parameter transmitted from the current measuring means 1 is calculated by the information processing means. , And displays the calculation result information on the screen of the home television 22.

In this example of the system arrangement, the current information transmitting means 1 uses the AC current value sensor shown in FIG. Further, the information processing means, the first and second storage means, the information processing means, the timing means, and the display means are integrally integrated with the main body 2.
3. As described above, a controller, a mouse, and / or a temperature measuring means are connected to the information processing means, but are not shown in the system layout diagram.

Signal communication between the current information transmitting means 1 and the main body 23 is not particularly limited. For example, in addition to the direct connection using a cable, various known methods other than this method, such as data communication using infrared rays, data communication using weak radio waves, and data communication using home power lines, can be exemplified. In particular, in the case of data communication using a domestic power line, there is no need for wiring, and use can be facilitated. In addition, depending on the connection method,
It is necessary to provide necessary components such as a transformer. The above communication methods are known in the art, and the communication methods can be suitably used.

In this embodiment, since the home television set 22 is used as a display medium, the video signal generating means as the display means and the video terminal of the television are connected to the AV terminal.
Connected by cable 24.

[0040]

FIG. 4 is a schematic diagram showing an electrical configuration of a power monitoring information terminal according to the present invention. The power monitoring information terminal according to the present embodiment is a central processing unit (hereinafter abbreviated as CPU) 3 provided on one semiconductor chip 100.
1, graphic processor 32, sound processor 33, DMA controller 34, internal memory 35, first
It has a bus arbitration circuit 36, a second bus arbitration circuit 37, an input / output control circuit 38, a timer circuit 39, an analog / digital converter 40, a PLL circuit 41, a clock driver 42, a low voltage detection circuit 43, and an external bus interface circuit 44. In addition, a DRAM refresh control circuit 45 is provided as needed. Such a single semiconductor chip configuration is used in order to reduce the manufacturing cost because the terminal itself can be reduced in size and can be realized with a simple circuit.

The semiconductor chip 100 includes a first bus including a 16-bit first address bus and a read / write signal, an 8-bit first data bus, and a 24-bit second bus.
A second bus including an address bus, a read / write signal, and an 8-bit second data bus is further provided. In the present specification, a device that issues an address to the first and second buses is referred to as a bus master, and a device that receives an address is referred to as a bus slave.

The present power monitoring information terminal includes a semiconductor chip 10
0, one or more external ROMs (read only memory, the same applies hereinafter) 46 and, if necessary, one or more external ROMs.
M (random access memory, hereinafter the same) 47, clock circuit 48, AC current sensor (not shown), crystal oscillator 4
9 and a battery 50 for holding data in a static RAM (hereinafter abbreviated as SRAM) as required.

The clock circuit 48 is connected to the CPU via the second bus.
The clock information is transmitted as a second parameter to 31, and in this embodiment, information on the absolute time is transmitted. The clock circuit 48 plays a role as a clock unit shown in FIG.

An AC current sensor (not shown) converts magnetism generated by a current flowing through the commercial power line into a voltage level signal, and transmits current value information as a first parameter to the CPU 31 through the first bus. The AC current sensor is
The clip type shown in FIG. 2 is used. The AC current value sensor functions as a current measuring unit in FIG.

The external ROM 46 is constituted by a semiconductor memory and mainly stores programs and operation data. External R
The OM 46 serves as a first storage unit.

The external RAM 47 stores first to third parameters and arbitrary operation result information. The external RAM 47 plays a role as a second storage means together with an internal memory 35 to be described later, and particularly plays a role as a calculation result storage memory.

The CPU 31 performs various calculations and controls the entire system according to a program stored in the memory. C
The PU 31 is a bus master of the first bus and the second bus, and can access resources connected to each bus. Specifically, it has a role of deriving calculation result information from calculation parameters and a role of controlling the entire system. The CPU 31 constitutes the information processing means in FIG. 1 together with other resources described later.

The graphic processor 32 has a function as a bus master, and synthesizes graphic data and generates a video signal suitable for a color television receiver. The graphic data is composed of a graphic element consisting of a two-dimensional array of a set of rectangular pixels having a size that covers the entire screen of the television receiver, and a set of rectangular pixels that can be arranged at any position on the screen. Synthesized from graphic elements. Here, the former is called a text screen, the latter is called a sprite, and each set of rectangular pixels is called a character. The one used in this embodiment can display a maximum of two text screens and a maximum of 256 sprites. From the synthesized graphic data, NTSC standard and PAL
A video signal that can be displayed on a receiver conforming to the standard is generated. Note that the graphic processor 32 functions as a display unit in FIG.

The sound processor 33 reproduces sound by the pulse code modulation method, is a bus master of the first bus and the second bus, reads data stored in the internal memory 35, the external ROM 46 and the external RAM 47, and outputs a stereo sound. A signal L / R is generated and output. The sound processor 33 is controlled by the CPU 31 through the first bus. It should be noted that the sound processor functions as the above-described sound generating means.

The DMA controller 34 has an external ROM 4
6 or transfers data from the external RAM 47 to the internal memory 35. Further, it has a function of generating an interrupt request signal to the CPU 31 to notify the completion of the data transfer. The DMA controller 34 is a bus master of the first bus and the second bus. DMA controller 34
Are controlled by the CPU 31 through the first bus. D
The MA controller 34 constitutes an information processing means in FIG. 1 together with the CPU 31 and the like.

The internal memory 35 includes a mask ROM, an SRA
M, and dynamic RAM (hereinafter abbreviated as DRAM). When the SRAM needs to hold data by a battery, a battery 50 is required outside the chip 100. When a DRAM is mounted, an operation called “refresh” for holding stored contents is required periodically. The internal memory 35, together with the external RAM 47, serves as a second storage means, mainly as an arithmetic processing memory.

The first bus arbitration circuit 36 receives a first bus use request signal from each bus master of the first bus, performs arbitration, and issues a first bus use permission signal to each bus master. Each bus master is permitted access to the first bus by receiving the first bus use permission signal. Here, the first bus use request signal and the first bus use permission signal are shown as a first bus arbitration signal in FIG.

The second bus arbitration circuit 37 receives a second bus use request signal from each bus master of the second bus, performs arbitration, and issues a second bus use permission signal to each bus master. Each bus master is permitted access to the second bus by receiving the second bus use permission signal. Here, the second bus use request signal and the second bus use permission signal are shown as a second bus arbitration signal in FIG.

The input / output control circuit 38 communicates with external input / output devices such as a mouse and a controller and external semiconductor elements via input / output signals. Input / output data is read / written from the CPU 31 via the first bus. The input / output control circuit 38 functions as information input means together with other resources described later.

The timer circuit 39 has a function of generating an interrupt request signal to the CPU 31 based on the set time interval. The setting of the time interval and the like is performed by the CPU 31 via the first bus. Timer circuit 39 is CP
It plays a role as an information processing means together with other resources such as U31.

The analog-to-digital converter 40 converts an analog-level input voltage signal into a digital value.
Further, it has a function of generating an interrupt request signal to the CPU 31 to notify the completion of the conversion. In this embodiment, the output from the AC current value sensor is connected to the input of this analog-to-digital converter. The converted data is read by the CPU 31 via the first bus. The analog / digital converter 40 has a function as a current measuring unit together with the AC current value sensor.

The PLL circuit 41 is constituted by a phase locked loop (PLL), and generates a high frequency clock signal obtained by multiplying a sine wave signal obtained from a crystal oscillator 49 outside the processor. The PLL circuit 41 has a function as an information processing means together with other resources such as the CPU 31.

The clock driver 42 includes a PLL circuit 41
The received high frequency clock signal is amplified to a signal strength sufficient to supply the clock signal to each functional block. The clock driver 42 has a function as an information processing unit together with other resources such as the CPU 31.

The low voltage detection circuit 43 monitors the power supply voltage, and when the power supply voltage is lower than a predetermined fixed voltage, the PLL
A reset signal for the circuit 41 and other reset signals for the entire system are issued. Further, the internal memory 35 or the external RAM 47 is constituted by an SRAM,
When the data retention by the AM battery is required, a function is provided for issuing a battery backup control signal when the power supply voltage is equal to or lower than a predetermined fixed voltage. The low voltage detection circuit 43 has a role as an information processing means together with other resources such as the CPU 31.

The external bus interface circuit 44 has a function for connecting the second bus to the external bus and a function for controlling the bus cycle length of the second bus by issuing a second bus cycle end signal. The external bus interface circuit 44 has a role as a clock unit and an information input unit in this embodiment.

The DRAM refresh control circuit 45 unconditionally acquires the right to use the first bus at regular intervals, and
The M refresh operation is performed.

Next, a description will be given of a calculation method mainly performed in the present power monitoring information terminal.

FIG. 5 shows an example of data of current value information and effective power information. (A) shows current value information of a voltage level. (B) shows a state converted into an effective value current. Note that the signals in both figures do not coincide in the time direction, but the time axis is enlarged at an arbitrary ratio for understanding. Since the current value information obtained by the AC current value sensor is an actually measured value of the AC current, the current value information is in a sine wave state as shown in FIG. In this embodiment, in order to make the sine wave signal an effective value for calculating the power, the signal is directly taken in and converted by a program controlled by the CPU. The information obtained by converting the current value information into the effective current is information as shown in FIG. 5B, and the respective values are converted into the power consumption for each basic time. The basic unit at this time is not particularly limited, and can be set to any time. The calculation result information of the power consumption for each basic time obtained in this way, for example, accumulated every 5 minutes, and the power consumption is stored in the storage means.

Since the clock circuit 48 has transmitted the absolute time information as the second parameter, the absolute time information is associated with the above-described calculation result information on the power consumption every five minutes. Here, when the temperature information is further transmitted by the temperature measuring means, these three pieces of information are stored in association with each other. As shown in FIG. 6, each information at this time stores three parameters corresponding thereto.

The reason why the temperature information is selected as the third parameter to be input is that the amount of power consumed in ordinary households is not due to household electric appliances used on a daily basis. In addition, since it is expected that the heating is largely performed, the relationship between the temperature and the power consumption can be confirmed.

Note that these data are initially stored in a somewhat short cycle, such as every five minutes. For example, data six months ago is accumulated for one day, and stored as one-day data. Thus, it is preferable to devise to reduce the data capacity.

Based on these data, it is possible to easily calculate, for example, power consumption in an arbitrary period. For example, when integrating the amount of power consumption used in a given day, it is possible to easily calculate by extracting only the data of the day from the stored data and accumulating the data.

Further, for example, it is also possible to easily estimate the accumulated power consumption in a given month before the end of a certain period, for example, from information actually obtained. For example, if today's date is the 20th and the power consumption for the month is multiplied by 1.5 to obtain the expected value of the power consumption for the month, the power consumption for the month is calculated by multiplying the power consumption for the month by 1.5. Can be expected. The formula for obtaining the expected value, that is, the second calculation result information, is not particularly limited. For example, if you have last year's data, 1 to 20 days will be the information of this year's power consumption, 21 to 30 days
You can also use this year's data to calculate the forecast for the current year.

According to this function, if an arbitrary period is set as the payment period of the electricity bill, each consumer can easily confirm the power consumption for each due date of the electricity bill. Further, since the current value information associated with the timekeeping information is information having the concept of time, if these are held as data, they can be statistically processed to graph the relationship between time and power consumption. Also, it is easy to compare the amount of power consumption for each sectioned time, so that the user of the apparatus can further understand the amount of power consumption.

Since the electricity rate can be easily derived from the power consumption, it can be easily calculated based on such information. Since the power consumption can be calculated as both the first calculation result information that is the actually measured value and the second calculation result information that is the expected value, the information regarding the electricity rate is also calculated based on both the actually measured value and the expected value. can do.

In addition, for example, when there is information for deriving the amount of carbon dioxide emission from the power consumption, information such as the amount of carbon dioxide emission can be calculated, and these can be used as calculation result information. it can.

It is possible to compare a plurality of pieces of the operation result information, and the information can be displayed in a graph.

As a third parameter used in the present invention, the power consumption after a certain period of time is input and set, and it is possible to compare the information with the information on the power consumption during an arbitrary certain period. It is possible. In this case, the set value is stored in the second storage means, and the information processing means compares the calculation result information with the set value, and calculates the calculation result information according to the result. Therefore, it is also possible to calculate the difference between the two and display a warning message or the like according to the difference. According to the present invention, it is possible to easily grasp the difference between the actual power consumption and the target value, and it is expected that the spirit of energy saving will be evoked. For example,
By entering and storing the monthly power consumption and electricity rate as target values, the actual measured integrated power consumption is compared with the set value, and if the target value is exceeded, a warning is issued. A report can be made.

The third parameter may be, for example, message information in addition to the above. The input message information is stored in the external RAM 47, and a message displayed according to the calculation result information is selected by the CPU 31 and displayed on the screen. For example, when the amount of power consumption suddenly flows, a message indicating that there is a possibility of leakage can be selected and displayed.

The message information input as the third parameter may be input, for example, by remote control over a telephone line. In this case, a communication interface is required as information input means, and various known communication methods can be used.

[0076]

According to the power monitoring information terminal of the present invention, it is possible to display information on the amount of power consumption, which is hard to be grasped by general consumers, in an easy-to-read form. Can be. Also,
By using a television receiver that is easily noticeable in normal life as a display medium, the information can be continuously expressed over time, and it is easy to confirm the transition of the power consumption.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a structure of a power monitoring information terminal of the present invention.

FIG. 2 is a schematic diagram showing a structure of a current measuring unit.

FIG. 3 is a schematic diagram showing a position of the power monitoring information terminal system of the present invention.

FIG. 4 is a schematic diagram showing an electrical structure of the power monitoring information terminal of the present invention.

FIG. 5 is a schematic diagram showing an example of data of current value information and effective power information.

FIG. 6 is an example of data stored in a second storage unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Current value measuring means 2 Time measuring means 3 Information processing means 4 First storage means 5 Second storage means 6 Information input means 7 Display means

Claims (7)

[Claims] 1. A current measuring means for measuring a current flowing between a commercial power supply and a load using the commercial power supply, and generating current value information as a first parameter, and generating timing information as a second parameter. Time input means, information input means for inputting an arbitrary third parameter necessary for determination of an arbitrary function and / or operation processing, operation data including at least an initial value of the third parameter, and an operation processing program A first storage unit for storing, and an operation result storage memory for storing at least an area functioning as an operation processing memory, the first to third parameters, and operation result information to be described later calculated by the information processing unit to be described later A second storage unit configured with an area functioning as a computer, and the first to third parameters and operation data as operation parameters, the operation processing program. An information processing unit having an information processing function of deriving three operation result information described later based on the gram, and a display unit for visually displaying at least a part of information of the operation result information and the operation parameter, The first information processing function is a function of performing processing on at least the first parameter and / or arbitrary calculation result information stored in the second storage unit to obtain first calculation result information. The information processing function of the first processing result information and / /
Or, a function of using an expected value estimated from arbitrary operation result information stored in the second storage means as second operation result information. The third information processing function is a function of the first or second operation. The operation result information and / or any operation result information stored in the second storage means is read, a comparison process is performed, and the result is stored in a third storage unit.
A power monitoring information terminal having a function of calculating operation result information. 2. The power monitoring information terminal according to claim 1, wherein the calculation result information is information relating to power consumption and power consumption and / or electricity rate during an arbitrary fixed period. 3. The apparatus according to claim 1, further comprising a temperature measuring unit that generates temperature information as the third parameter, wherein the temperature information is input from an information input unit. Power monitoring information terminal. 4. The information input means further has a function of inputting set value information of a power consumption amount or an electricity rate in a certain period as a third parameter, and the second storage means stores the set value information. 4. The information processing apparatus according to claim 1, wherein the information processing unit has a function of comparing the set value information with the calculation result information, and using related information corresponding to the result as third calculation result information. Power monitoring information terminal. 5. The information input means has a function of inputting message information, the second storage means stores the message information, and the information processing means stores a message related to operation data and operation result information. The power monitoring information terminal according to any one of claims 1 to 4, further comprising a function of selecting and using the result as operation result information. 6. The power monitoring information terminal according to claim 1, further comprising an audio signal generating means, capable of generating an audio signal corresponding to the operation result information. 7. The display means is a video signal generation means connected to a video terminal of a home television apparatus to generate a video signal, and the audio signal generation means is connected to an audio terminal of the home television apparatus to convert an audio signal. 7. The power monitoring information terminal according to claim 6, which is an audio signal generating means for generating.