JPS59229949A - Automatic gauge examination system - Google Patents

Abstract

PURPOSE:To check electric power information on each home automatically and perform totalization efficiently by converting the current value of a watt-hour meter into digital information when a terminal station receives a transmission instruction, and transmitting the digital information to a center station through a repeater station. CONSTITUTION:When the transmission instruction is sent out of the center station 9 to the radio equipment 5 of the terminal station, the radio equipment 5 reads the current contents of the watt-hour meter 4 and transmits them to the repeater station 7. At the same time, they are outputted to a display part 6 as well. The repeater station stores all the contents sent from the radio equipment 5 in a memory 8 and then resends them to the center station 6. Only one wave is allotted for a radio section and 1,600 homes are handled in about 10min.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a meter reading system that automatically tallies the usage status of electricity used in each household.

Traditionally, the meter reading of electricity used in each household involves manually reading the values from the integrated wattmeter and tabulating them, which requires a large number of people, and is affected by the mode of transportation, resulting in aggregation errors and other problems, resulting in inefficiency. It has become bad.

An object of the present invention is to solve the above-mentioned problems, and to provide an automatic meter reading system that can automatically read electricity meters for each household and efficiently send the totals to a center.

In order to achieve the above object, the automated meter reading system according to the present invention includes a terminal station group consisting of a transmission unit that converts the readings of an integrating wattmeter installed in each home into digital information, and a display unit that displays the digital information. , a relay station, and a central station that receives information sent from the relay station using a wireless transmission method, and when the corresponding terminal station receives a transmission command issued by the central station to a certain terminal station. , the corresponding terminal station converts the value of the integrated power meter at the time of receiving the transmission command into digital information, and transmits it to the central station via the relay station.

Hereinafter, the present invention will be explained in more detail with reference to the drawings and the like. FIG. 1 is a diagram showing an embodiment of an automated meter reading system according to the present invention. In the figure, 1.4 is an integrated power meter, 2.
5 is a radio device which is a transmission section, and 3.6 is a display section. The terminal station consists of a radio and a display. Radio 2, 5
has a circuit section that digitally reads the value of the integrated wattmeter 1.4, and the display sections 3 and 6 display the read power information in digital form. 7 relay station, radio 2
Alternatively, the power information of No. 5 is stored once in the memory 8 and then retransmitted. Reference numeral 9 denotes a radio device at the cutting center of the central office, and the received results are aggregated and processed by the computer 10.
Prices may be converted.

The operation will be explained step by step below.

The central station 9 is currently issuing a transmission command from its radio. The transmission instructions consist of a code that identifies each household unit. Now, if a transmission command is sent to the radio device 5 of the terminal station, the radio device 5 digitally reads the contents of the integrated wattmeter 4 at the time the transmission command is sent, and transmits it to the relay station 7.

At the same time, the read digital information is also output to the display section 6. After the relay station 7 stores all the contents sent from the radio device 5 in the memory 8, it retransmits them to the central station 9. Since the radio waves on the uplink and downlink are not used at the same time until the central station issues a transmission command to the radio 5 and the next time the central station receives the signal from the radio 5, the radio frequency is 1.
It is sufficient to allocate only waves.

Let us now consider the transmission capacity of this system. The data rate is 8 kbps and the downlink is xoobit.
, the uplink from the terminal station side radio to the relay station and from the relay station to the central station radio are all 100 bits. Usually 10
Approximately 0 bits can sufficiently represent each household's identification code, power information, low control information, etc.

The processing time for one household is 10 downlinks (terminal station to medium-dark station) and 10 upstream stations (relay station to central station) = (100-zoo+
xoo)/s(msec)=37. It becomes sm sec. Therefore, for example, if it is about 10 minutes, 10
60 x 1000/37,5 = 16000 (
This means that it will be possible to perform aggregation processing for households.

As explained above in detail, according to the automated meter reading system according to the present invention, electricity information of each household etc. is automatically read,
It can be quickly sent to the aggregation center. Also, it is sufficient to allocate only one radio section for this purpose.
As mentioned above, it is possible to process 16,000 households in about 10 minutes. Moreover, since there is no human part, there are no problems with aggregation errors, and there are advantages such as being unaffected by troubles with transportation facilities. Furthermore, if this system is directly connected to a computer at a collection center, it will be possible to completely automate the process up to the creation of billing charges.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an embodiment of an automated meter reading system according to the present invention. 1.4... Integrated power meter 2.5... Transmission unit (radio device) 3.6... Display unit 7... Relay station 8... Memory 9... Central station 10... Computer Patent Applicant NEC Corporation Representative Patent Attorney Hisashi Inoro

Claims (3)

[Claims] (1) A terminal station group consisting of a transmission unit that converts the reading of an integrated wattmeter installed in each home into digital information and a display unit that displays the digital information, a relay station, and a wireless communication unit from the relay station. and a central station that receives information sent by a transmission method, and when the relevant terminal station receives a transmission command issued by the central station to a certain terminal station.The time when the relevant terminal station receives the transmission command. An automated meter reading system characterized in that it is configured to convert the value of an integrated wattmeter into digital information and transmit it to the central station via the relay station. (2) The transmission unit uses a radio, the relay station has a memory for storing received information, and the transmission path from the terminal station to the relay station and further to the central station uses the same radio frequency band. The automated meter reading system according to item 1, characterized in that it is configured using a packet communication method. (3) The automated meter reading system according to item 1, wherein the display unit displays the value of the integrated wattmeter at the time of receiving the transmission command from the central station.