JPH0510973A - Load survey meter - Google Patents

Abstract

PURPOSE:To surely make possible the measurement of an electrical consumption quantity by equipping a setting part for setting a discrimination signal of a meter to be measured, an estimation part and a misconnection detection part for comparing measurement data with data to be measured and estimating the kind of the meter to be measured. CONSTITUTION:The measurement data 1 of an electric power measurement means 22 are compared with a load pattern 2 based on electric power consumption conditions to output device proposed data by the use of an analysis processing part 3 of a load discrimination means 24 of a load survey meter 20. The device proposed data are compared with set data of each setting means 21 of a measuring instrument by the use of each discrimination part 4 of a measuring instrument to detect the misconnection of electric devices in the case where these data are inharmonious. The data of the means 21 are stored to a memory 23 and the general control of a survey meter 20 such as the measurement data stored in the memory 23 and electric device name data are sent out to a center is performed by the use of CPU 25. Accordingly detection can be performed on whether a meter to be measured for determining an electric power consumption quantity is connected and the electric power consumption quantity can be measured surely.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a load survey meter.

[0002]

2. Description of the Related Art When measuring the electric power consumption of an electric power consumer, a load survey meter is used which measures the electric power consumption over time and holds the measured data. In addition, a load survey system may be applied in which the weighing data measured by the load survey meter using a subscriber telephone line is transmitted to the center. For example, in a conventional load survey system, a load survey meter is connected to an electric device to be measured, and the amount of electric power measured for each electric device is held for a predetermined time period. Then, according to the request of the center, the weighing data held by the load survey meter is sent to the center via the subscriber telephone line.

[0003]

Since such a conventional load survey meter integrates only the electric energy data and transmits it to the center, it was not possible to grasp what electric equipment data it was. Further, even if wrong electric devices are connected to the individual load survey meters, they are not verified, so that the data of the electric devices incorrectly connected is transmitted to the center as it is. An object of the present invention is to provide a load survey meter capable of clarifying a voltage device whose electric energy is measured and detecting an erroneous connection of an electric device.

[0004]

In order to achieve the above object, the present invention is a load survey meter for measuring the amount of power used by a device under test and storing the measured data at a predetermined time interval. And an estimation unit for comparing the measured data of the device under test and the device under test based on the preset power usage status to estimate the type of the device under test, and the estimation data and setting unit of the estimation unit. It is configured by an erroneous connection detection unit that compares the setting data of 1 and detects erroneous connection of the device under test if the data do not match.

[0005]

In such a configuration, the estimating unit estimates the type of the device under test connected from the weighing data and the device under test data, and the misconnection detecting unit estimates the setting data from the setting unit and the estimation from the estimating unit. Since the data are compared and the incorrect connection of the device under test is detected when these data do not match, the incorrect connection of the connected device can be grasped and correct measurement data can be obtained.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A load survey meter of the present invention will be described below with reference to the drawings.

1 and 2 are a block diagram of a load survey meter and a block diagram of load determining means of the load survey meter. 1 and 2, the load survey meter 2
0 is configured as follows. That is, 21 is a measuring device name setting means for setting the name of each electric device, and the power consumption of the connected electric device is measured by the power amount measuring means 22. Reference numeral 23 is a memory that stores the weighing data measured by the power amount measuring means 22. Reference numeral 24 is a load discriminating means, which detects whether or not an electric device to be measured by the load survey meter 20 is connected. A CPU 25 stores the data of the measuring device name setting means 21 obtained via an interface (not shown) in the memory 23 or sends the weighing data and the electric device name data stored in the memory 3 to the center. The overall load survey meter 20 is controlled.

The load determination means 24 is constructed as follows. The analysis processing part 3 compares the measurement data 1 from the power amount measurement means 22 with the load pattern 2 to estimate the connected electric equipment. The load pattern 2 is, for example, as shown in FIG. 3, and an electric device candidate group is formed for each situation from the power usage situation. The device name determination unit 4 compares the device candidate data of the analysis processing unit 3 with the setting data of the measuring device name setting means 21 to determine the device name.
Next, the operation of the load survey system will be described with reference to the flowchart of FIG. First, the electric machine setting data from the measuring device name setting means 21 of the load survey meter is read in through the interface (101).

Next, the device candidate estimated by the load discriminating means 24 is compared with the set electric device name (102), and if there is a match with the device name, the setting data is transmitted to the center (103). Then, the power amount measuring means 22 transmits the measured power usage amount to the center (10
4). In step (102), if there is no matching device name, a message notifying the abnormality is sent to the center (105).

As described above, according to the load survey system of the present embodiment, each electric equipment name can be registered, the kind of electric equipment to be measured can be entered in the data sent to the host device, and erroneous connection can be made. If there is, not only the center can be notified of the abnormality, but also the data of the electrical device name of the measurement object can be transmitted to the center, and the data communication can be reliably performed.

[0011]

As described above, according to the present invention, in the load survey meter which measures the power consumption of the device under test and stores the measured data at a predetermined time, the setting unit for setting the identification symbol of the device under test, This data is obtained by comparing the estimation data of the estimation unit and the setting data of the setting unit with the estimation unit that compares the measurement data of the measuring unit and the measurement target data based on the preset power usage status to estimate the type of the measurement unit. Since it is composed of an incorrect connection detection unit that detects the incorrect connection of the DUT when there is a mismatch, it can detect whether or not the DUT whose power consumption should be measured is connected, and reliably confirm the power consumption. Can be measured.

[Brief description of drawings]

FIG. 1 is a configuration diagram of load determining means of a load survey meter according to the present invention.

FIG. 2 is a configuration diagram of a load survey meter of the present invention.

FIG. 3 is a diagram showing a load pattern of [FIG. 1].

FIG. 4 is a flowchart showing the operation of the load survey system according to the embodiment of the present invention.

[Explanation of symbols]

 3 ... Analysis processing unit 4 ... Device name determination unit 21 ... Measuring device name setting unit 24 ... Load determination unit 25 ... CPU

Claims (1)

Claim: What is claimed is: 1. A load survey meter for measuring the amount of electric power used by a device under test and storing the measured data at a predetermined time, and a setting section for setting an identification symbol of the device under test. An estimation unit that compares the measurement data of the measuring device and the measured device data based on the preset power usage status to estimate the type of the measured device, and the estimated data of this estimating unit and the setting data of the setting unit are compared. A load survey meter having an erroneous connection detection unit that detects an erroneous connection of the device under test when the data do not match.