JPH08223092A - Load survey system - Google Patents

Abstract

PURPOSE: To contribute miniaturization of a slave machine and to secure accurate setting of a house code. CONSTITUTION: A master machine 100 is provided with house code setting means 45 and 47; and when a house code is set to a slave machine 300, power is supplied through a blocking filter 41, and the interference to the other demanding houses is prevented to perform the communication between the master machine 100 and the slave machine. The house code is transmitted and set from the master machine 100 to the slave machine in this state to eliminate a need of providing switches for house code setting in the slave machine. The house code is prevented from being erroneously set by mis- operation of setting of conventional switches of each slave machine.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a load survey system for collecting data from a plurality of devices, and more specifically, measuring the amount of use in each device such as electricity, gas, water, etc. About the load survey system that collects.

[0002]

2. Description of the Related Art FIG. 6 is a block diagram of a general load survey system applied for collecting power consumption data. In the same figure, A indicates the outdoors and B indicates the inside. In the outdoors A, the main unit 1 of the load survey system is connected to the low-voltage distribution line 2 and arranged. Further, a plurality of electric devices 9 such as a television, a cooler, and a refrigerator are provided in the room B, and these electric devices 9 are connected to the low-voltage distribution line 2 ′ via the slaves 3, respectively. The low-voltage distribution line 2 ′ is connected to the low-voltage distribution line 2 via a distribution board 7. Further, the low-voltage distribution line 2 to which the master unit 1 is connected is connected to the external distribution line via the blocking filter 6, thereby preventing signal leakage to the next house and intrusion of signals from the outside. Furthermore, the base unit 1 is
It is connected to the recorder 5 via the connector 1a on the master side and the connection connector 5a.

Each slave unit 3 generates a pulse signal having a cycle corresponding to the amount data used in each electric device 9, that is, the amount of electric power used, and integrates the pulse signals to obtain electric power amount data for each time period. It has a function of storing the time data together with the time data, and also has a function of returning the power consumption amount data and time data for each time period to the master device 1 when the data request signal from the master device 1 is received.

On the other hand, the master unit 1 has a function of transmitting a data request signal to each slave unit 3 at regular intervals to collect the power consumption data of each electric device 9 in a predetermined time period and the time period data. are doing. In addition, the master device 1 uses the connector 1a to record the data for the recorder 5 at regular intervals.
Is connected to transfer the used amount data for each time period to the recorder 5.

FIG. 7 is a block diagram showing the configuration of a conventional base unit 1 used in the load survey system shown in FIG. In the figure, the master unit 1 is a carrier wave transformer unit 1 for carrier wave injection and extraction, which includes a capacitor and a transformer.
1 and is connected to the low-voltage distribution line 2 via the carrier wave transformer unit 11. A carrier wave transmitter 12 and a carrier wave receiver 13 are connected to the carrier wave transformer 11, and the carrier wave transmitter 12 and the carrier wave receiver 13 are connected to a main controller 14. Therefore, for example, a data request signal issued from the main control unit 14 is coded by the carrier wave transmission unit 12 and is transmitted to the carrier wave transformer unit 11.
From the carrier wave receiving unit 13 and the used power amount data etc.
It is designed to be demodulated by. In addition, the main controller 1
A memory 16 for storing the received power consumption data and the time limit data, and a timer 17 for keeping the data request time for the handset 3 and the reference time for the time limit of the request data are connected to 4. Further, a connector 18 to which the connection connector 5a of the recorder 5 is connected is provided, and the power consumption data is transferred to the recorder 5 via the data output control section 19 and the data transmission interface 20.
The stabilized power supply circuit 21 is for supplying electric power to each unit in the parent device 1.

By the way, in the above-mentioned load survey system, it is necessary to connect the blocking filter 6 in order to prevent the signal leakage to the next house and the invasion of the signal from the outside. It became a large and heavy blocking filter corresponding to the amount of current used, which was a practical obstacle because of the installation location and the difficulty of construction.

Therefore, as a measure for eliminating the need for the blocking filter 6, a method is considered in which the communication format / telegram on the power line transport is shared so as not to cause a communication failure even if there is interference with a neighboring house. There is. In this method, in order to prevent interference, it is necessary to insert a house code that is unified within one customer into the telegram as a key code for distinguishing it from the next-door device. Add a switch,
This sets the house code locally.

[0008]

However, in this method, it is necessary to provide a switch for setting the house code in each slave unit, and it is not possible to reduce the size.
It must be set for each child device, and there is a risk of incorrect setting of the house code due to operation mistake. In particular, in one consumer, since a plurality of child devices are installed in the home living space, there is a strong demand for downsizing.

The present invention has been made in view of the above,
It is an object of the present invention to provide a load survey system that contributes to downsizing of a slave unit and ensures proper setting of a house code.

[0010]

In order to achieve the above object, the present invention according to claim 1 is such that the amount of electric power used by household electric appliances in the home is connected to the respective household electric appliances and a common house code is set. In a load survey system that measures with a slave unit and superimposes the measured data including the house code on the low voltage distribution line in the house and transmits it to the master unit,
At the time of setting the house code, setting power feeding means for feeding power to the master unit and the home low voltage distribution line through a blocking filter, and the house code for the slave unit provided in the master unit and connected to the home low voltage distribution line. The gist is to have a house code setting means for setting.

The present invention according to claim 2 is the same as claim 1
In the invention described above, the gist is that the setting power supply means is configured to be attachable to and detachable from the parent device.

Further, the invention according to claim 3 is the invention according to claim 2, characterized in that the setting power feeding means comprises a receptacle for connecting a slave unit for which a house code is to be set. To do.

[0013]

According to the present invention, the house code setting means is provided in the master unit, and when setting the house code in the slave unit, power is supplied through the blocking filter to interfere with other consumers. While enabling the communication between the base unit and the handset while preventing the above, by transmitting and setting the house code from the base unit to the handset, the handset is equipped with switches for setting the house code. This eliminates the need and also prevents the wrong setting of the house code due to an error in the conventional setting operation of the switches of each child device.

According to the present invention of claim 2,
By making the setting power feeding means attachable to and detachable from the parent device, it is possible to reduce the size of the parent device as compared with the case where each parent device is provided with the setting power feeding means, It is efficient because it can be used when setting the house code in.

Further, in the present invention according to claim 3, the setting power feeding means is provided with a receptacle for connecting a cordless handset for which a house code is to be set,
It makes the house code setting work easier.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 and FIG. 2 are main units 1 used in a load survey system according to an embodiment of the present invention.
00 is a block diagram showing the configurations of slave unit 300.
These parent device 100 and child device 300 are applied to the same load survey system as shown in FIG. 6 described above.

In the base unit 100, a blocking filter 41 and a power plug 43, a house code setting switch 45 and a house code setting message sending switch 47 connected to the main control unit 14 'are provided in contrast to FIG. This is a newly provided configuration. Here, the blocking filter 41 may be any filter as long as it can handle the total current consumption of the master unit and the slave unit when setting the house code.

The blocking filter 41 and the power plug 43 compose the power feeding means at the time of setting, and the house code setting switch 45 and the house code setting message sending switch 47 compose the house code setting means.

The slave unit 300 shown in FIG. 2 has a plug blade 34 connected to the low-voltage distribution line 2 ', and the plug blade 34
One end of a power supply line 24 is connected to. An outlet blade 23 is connected to the other end of the power supply line 24, a power plug 22 of the electric device 9 (FIG. 6) is connected to the outlet blade 23, and electric power is supplied to the electric device 9 via this. It has become so.

Further, the power supply line 24 is provided with a current transformer (C.T.) 26 for detecting current consumption by electric equipment flowing through the power supply line 24, and a power amount detector 25 is connected thereto. The current consumption value of the electric device detected by the current transformer 26 is supplied to the electric energy detector 25. The power amount detector 25 uses the amount of electric power used by the electric device, that is, the consumption amount, based on the current consumption value of the electric device supplied from the current transformer 26 and the voltage value between the power supply lines 24 supplied from the power supply lines 24. The electric power is calculated, and a pulse signal proportional to the used electric energy is output.

Further, the power supply line 24 is connected to a carrier wave transformer section 27 for injecting and extracting a carrier wave, which is composed of a capacitor and a transformer. The carrier wave transformer unit 27 is connected to a main control unit 30 via a carrier wave transmission unit 28 and a carrier wave reception unit 29. For example, used power amount data and time data output from the main control unit 30 are coded by the carrier wave transmission unit 28. Carrier wave transformer 2
7 is superimposed on the power waveform of the power supply line 24, and the data request signal and the like extracted by the carrier transformer 27 are demodulated by the carrier receiver 29 and supplied to the main controller 30.

A timer 31 is connected to the power supply line 24. The timer 31 divides the power supply power cycle supplied from the power supply line 24 to keep time, and at predetermined time intervals, for example, every 15 minutes. Generating an interval signal.

The main control unit 30 receives the pulse from the power amount detecting unit 25 and calculates the used power amount data for each predetermined time period, stores the calculated used power amount data in the memory 33, and also the master unit. When a data request signal is received from 100, the power consumption data stored in the memory 33 is returned to the parent device 100 together with the time limit data.

A stabilizing power supply circuit 35 is connected to the power supply line 24. The stabilizing power supply circuit 35 is connected to the stabilizing power supply circuit 35.
Rectifies and smoothes the voltage from the power supply line 24, stabilizes it, and supplies it to each part of the slave unit.

Next, the operation of setting the house code in the slave unit will be described as the operation of this embodiment.

After operating the house code setting switch 45 in the base unit 100 to set the house code, the power source is plugged into the power plug 43 through the blocking filter 41.
Supplied from As a result, power is also supplied to the low voltage distribution line 2. Here, since the power is supplied through the blocking filter 41, interference with the outside does not occur, and it is possible to set an arbitrary house code for the slave unit installed in one consumer. Become.

When the cordless handset 300 is connected to the low-voltage distribution line 2 as shown in FIG. 3 and the house code setting message sending switch 47 in the parent device 100 is operated, the cord is set by the house code setting switch 45. A telegram containing a house code is transmitted via the main control unit 14 ', the carrier wave transmission unit 12, the carrier wave transformer unit 11 and the low voltage distribution line 2 to the slave unit 3
00 is transmitted.

The main control unit 30 in the slave unit 300 receives a message from the master unit 100 via the carrier wave transformer unit 27 and the carrier wave receiver unit 29, and sets the transmitted house code. It should be noted that the main control unit 30 transmits a predetermined electronic message indicating that the setting is completed to the parent device 100 after the setting.

After that, other slave units arranged in the same customer are sequentially connected to the low-voltage distribution line 2 and the same setting process is performed. Then, after the house codes have been set for all the slaves, the connection as shown in FIG. 6 is performed to perform a predetermined power amount collection operation in one consumer.

Therefore, according to the present embodiment, the house code setting switch need not be provided in the slave unit, but can be provided only in the master unit, so that the slave unit can be made smaller than the conventional one. At the same time, since the house code only needs to be set in the master unit, erroneous setting of the house code is eliminated as compared with the conventional setting of the house code in each slave unit.

In the above embodiment, the blocking filter 41 is built in the base unit 100, but as shown in FIG.
It may be detachable from 00. According to this, by carrying this unit, it becomes possible to set the house code to the slave unit in other consumers, which is efficient and also makes the master unit compact. In addition, a cordless handset 3 that attempts to set a house code in this unit as shown in FIG.
By providing the receptacle 49 for connecting 00, the house code setting operation can be further facilitated.

[0033]

As described above, according to the present invention of claim 1, the house code setting means is provided in the master unit,
When setting the house code to the cordless handset, power is supplied through the blocking filter to prevent interference to other consumers while enabling communication between the cordless handset and the cordless handset. By transmitting and setting the house code to the cordless handsets, it is not necessary to provide switches for setting the cords to the cordless handsets, and the wrong setting of the house code due to an error in the conventional setting operation of the switches of each cordless handset. Since it is possible to reduce the size of the cordless handset, it is possible to accurately set the house code.

Further, according to the present invention as set forth in claim 2, since the setting power feeding means can be attached to and detached from the parent device, compared with the case where each setting device is provided with the setting power feeding means. Can be miniaturized, and can also be used at the time of setting the house code in other customers, and the efficiency of the setting work can be improved.

Further, according to the invention of claim 3,
Since the setting power feeding means is provided with the receptacle for connecting the cordless handset for which the house code is to be set, the house code setting operation can be facilitated.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of a base unit of a load survey system according to an embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of a child device of the load survey system according to the embodiment of the present invention.

FIG. 3 is a diagram for explaining the operation of the embodiment.

FIG. 4 is a diagram showing a configuration of another embodiment of the one embodiment.

FIG. 5 is a diagram showing a configuration of still another embodiment of the one embodiment.

FIG. 6 is a diagram showing a general connection configuration of a load survey system.

FIG. 7 is a diagram showing a configuration of a base unit of a conventional load survey system.

[Explanation of symbols]

 1,100 Base unit 2,2 'Low voltage distribution line 3,300 Slave unit 5 Recorder 6,41 Blocking filter 9 Electric equipment 11,27 Carrier wave transformer unit 12,28 Carrier wave transmitter unit 13,29 Carrier wave receiver unit 14,14', 30 main control unit 16,33 memory 17,31 timer 18 connector 19 data output control unit 20 data transmission interface 21 stabilized power supply 22,43 power plug 23 outlet blade 24 power supply line 25 power detector 26 current transformer 34 plug Blade 35 Stabilized power supply circuit 45 House code setting switch 47 House code setting message sending switch 49 Receptacle

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification number Office reference number FI Technical display location G08C 15/00 G08C 15/00 B H04Q 9/00 311 H04Q 9/00 311S

Claims (3)

[Claims] 1. The amount of power consumption of home electric appliances in the home is measured by a handset connected to each of the electric appliances and a common house code is set, and the measured data including the house code is distributed to the home low voltage. In a load survey system that superimposes a carrier wave on an electric wire and transmits it to the master unit, at the time of setting a house code, a setting power supply means for supplying power to the master unit and a low-voltage distribution line in the house through a blocking filter, A load survey system, comprising: house code setting means for setting a house code in a slave unit provided and connected to a low-voltage distribution line in the house. 2. The load survey system according to claim 1, wherein the setting power feeding means is configured to be attachable to and detachable from the parent device. 3. The load survey system according to claim 2, wherein the setting power feeding means includes a receptacle for connecting a slave unit whose house code is to be set.