JPH0898273A - Radio gage examination device - Google Patents

Abstract

PURPOSE: To reduce the memory capacity of a master station side and to miniaturize master station equipment by storing last gage examination data in each meter side and transmitting the gage examination data this time and last time to the master station side in the next, gage examination. CONSTITUTION: The information control part 3 of this device, when a gage examination request signal from the master station side being received via a radio transmitter/receiver 2, reads the present gage examination data from a holding part 5, and reads out the last gage examination data from a memory part 4. Thence, the present data read from the holding part 5 is stored in the memory part 4 as the last gage examination data. Following that, the transmitter/receiver 2 is switched to a transmission mode, and the gage examination data this time and last time are transmitted to the master station side. By employing such constitution, it is possible to dispense with the storage of the last gage examination data in the master station side, which enables the memory capacity to effectively be used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless transmission / reception metering system for remotely wirelessly metering a measuring instrument such as a water meter, a gas meter, a power meter, a calorimeter, etc., and particularly, a control from a master station side. The present invention relates to a wireless meter reading device that receives a signal and transmits meter reading data to a master station side.

[0002]

2. Description of the Related Art Conventionally, when a wireless meter reading is performed remotely from a measuring instrument such as a water meter, a gas meter, a power meter, or a calorimeter, a ledger is prepared in advance in order to calculate the usage amount from the last meter reading. It was necessary to examine it, and the meter reading data had to be stored in the master station side last time. Therefore, it takes a lot of time to check the ledger, and an increase in the amount of data memory on the master station side leads to an increase in the size of the master station device. In addition, as the number of meter-reading locations increases and the number of meter-reading areas increases, the number of master stations increases (for example, one master station for area A and one master station for area B) and memory media such as memory cards. The number of storage media increases (for example, one storage medium for area A, one storage medium for area B, etc.), and because there is no sharability for each area, the master station side for area B or the memory for area B at the time of meter reading in area A Often, the media was misused and the meter reading failed. Further, even though the master station side device and the storage medium are used as a pair, the host computer mistakenly stores the previous meter-reading data of the area B in an attempt to store the previous meter-reading data of the area A. In some cases, it was not possible to read the meter after the fact. In addition, there is a risk that all the stored meter reading data will be lost when the master station side breaks down or is destroyed.

[0003]

However, the previous meter reading data when the previous meter reading was performed is stored in each meter side, and the current meter reading data and the previous meter reading data are stored in the meter side at the next meter reading. By sending from the master station to the master station, it is possible to save the trouble of checking the ledger in advance, and the master station does not need to store the previous meter reading data. It is possible to downsize the station equipment. In addition, there is no need to properly use the master station side device and storage medium, and even if the master station side fails or is destroyed, the previous meter reading data is saved on each meter side, so there is a risk that the previous meter reading data will be lost. There is no sex. An object of the present invention is to provide a wireless meter-reading device capable of realizing such a thing.

In the meter reading business, in addition to the collection of the usage fee, the meter inspection is often performed on days other than the meter reading day.
At that time, the meter may be read and the memory on the meter side may be updated. The object of the second aspect is to prevent the occurrence of such a situation.

[0005]

[Means for Solving the Problems] In order to achieve the above object,
The wireless meter reading device of the present invention uses a wireless transmission / reception unit that receives a control signal from the master station side and transmits meter reading data to the master station side, a storage unit, and a control signal received by the wireless transmission / reception unit. Of the current meter reading data, and the wireless transmission / reception unit transmits the current meter reading data as the current meter reading data, and the storage unit newly stores the previous meter reading data, and also reads the previous meter reading data already stored in the memory unit. And information control means for causing the wireless transmission / reception means to transmit.

According to a second aspect of the present invention, in addition to the above-mentioned means, a judging means for judging whether or not to store the current meter reading data of the meter as the previous meter reading data in the storing means in accordance with a control signal from the master station side. Be prepared.

[0007]

In the above-described structure, when the master station side transmits a control signal for meter reading to the meter side and this is received by the wireless receiving means of the meter side, the meter side displays the current meter reading data of the meter. Is read and transmitted to the master station side as the current meter reading data, at the same time, the previous meter reading data already stored in the storage means is read and also transmitted to the master station side, and the storage means is updated and read. The current meter reading data is stored as the previous meter reading data.

[0008]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 shows the construction of the meter side of the wireless meter reading device of the present invention. This wireless meter-reading device includes an antenna 1 for both transmission and reception, a wireless transceiver 2, an information control unit 3, a memory unit 4, an integrated value holding unit 5, and a weighing unit 6.

The radio transmitter / receiver 2 demodulates the radio wave signal from the antenna 1 and inputs it to the information control section 3, and conversely modulates the electric signal from this information control section 3 and transmits it from the antenna 1 as a radio wave.

The information control unit 3 performs the following four controls and other controls according to the control signal transmitted from the master station side and received by the wireless transceiver 2. The current meter reading data is read from the integrated value holding unit 5. The read current meter reading data is newly stored in the memory unit 4 as the previous meter reading data. The previous meter-reading data already stored in the memory unit 4 is read out and replaced with the new meter-reading data previously stored. The wireless transceiver 2 is controlled so as to transmit the current meter reading data read from the integrated value holding unit 5 by and the previous meter reading data read by.

Under the control of the information control unit 3, the memory unit 4 updates and stores the previous meter reading data as described above. The integrated value holding unit 5 integrates the electric signals generated from the measuring unit 6, holds the integrated value as the current meter reading data, and sends the meter reading data to the information control unit 3 under the control of the information control unit 3. Output. The measuring unit 6 generates an electric signal according to the usage amount of the used object.

FIG. 2 shows the configuration of the master station side, which includes an antenna 7 for both transmission and reception, a radio transceiver 8, an information control section 9, and a display section 1.
0 and a transmission data input unit 11.

The radio transmitter / receiver 8 demodulates the radio wave signal from the antenna 7 and inputs it to the information control section 9, and conversely modulates the electric signal from this information control section 9 and transmits it as a radio wave from the antenna 7. The information control unit 9 controls the wireless transceiver 8 so that the meter reading data received by the wireless transceiver 8 is displayed on the display unit 10 or the transmission data from the transmission data input unit 11 is read and transmitted to the meter side. To do. Display 1
0 displays according to the signal from the information control unit 9. The transmission data input unit 11 is used to key in transmission data to be transmitted to the meter side.

FIG. 3 shows the flow of processing performed by the information control unit 3 on the meter side shown in FIG. First, in step S1, the wireless transmitter / receiver 2 is set to a reception mode in which a control signal on the master station side can be received. In the next step S2, it is determined whether or not the meter-reading data request signal from the master station side has been input via the wireless transceiver 2, that is, whether or not the meter-reading data request signal has been received by the wireless transceiver 2. If not received, steps S1 and S2 are repeated. When the meter reading data request signal is received, the current meter reading data is read from the integrated value holding unit 5 in step S3. Then, in step S4, the previously read previous meter reading data is read from the memory unit 4. Next, in step S5, the current meter reading data read from the integrated value holding unit 5 is stored in the memory unit 4 as the previous meter reading data. Step S
After the wireless transceiver 2 is switched to the transmission mode in 6, the current meter reading data and the previous meter reading data read from the memory 4 are transmitted to the master station side by the wireless transceiver 2 in step S7. Thereafter, the same operation is repeated from step S1.

Next, FIG. 4 shows another example of the configuration on the meter side. In addition to the configuration of FIG.
It is equipped with 2. The determination unit 12 determines whether or not to store the current meter reading data of the meter as the previous meter reading data in the memory unit 4 according to a control signal from the master station side. Although the determination unit 12 is shown as a separate block in FIG. 4, it can be provided in the information control unit 3.
That is, the information control unit 3 itself may have the function of the determination unit 12 as described above.

FIG. 5 shows a flowchart in the case where the judgment section 12 is provided. In this case, the step S4 between the step S4 and the step S5 in the flowchart of FIG.
8 is added. Then, in step S8, it is determined whether or not the control signal from the master station side is a control signal for storing the current meter-reading data as the previous meter-reading data. If it is a control signal to be stored, the process proceeds to step S5 and is stored in the memory unit 4 as described above. If not, the process proceeds to step S6 without passing through step S5.

[0018]

According to the present invention, the previous meter reading data when the previous meter reading was performed is stored in each meter side, and the current meter reading data and the previous meter reading data are stored in the meter side at the next meter reading. Since the data is sent from the master station to the master station, it is possible to save the trouble of checking the ledger in advance, and the master station does not need to store the previous meter reading data. Can be downsized. In addition, there is no need to properly use the master station side device and storage medium, and even if the master station side fails or is destroyed, the previous meter reading data is saved on each meter side, so there is a risk that the previous meter reading data will be lost. There is no sex.

According to the second aspect, whether or not the current meter reading data of the meter is stored in the storage means as the previous meter reading data is determined according to the control signal from the master station side. In addition, there is no mistake whether the current meter reading is for meter inspection or for making a meter reading table, and it is possible to prevent the memory on the meter side from being updated by mistake during meter inspection. .

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration on a meter side according to a wireless meter-reading device of the present invention.

FIG. 2 is a block diagram showing a configuration on a master station side.

FIG. 3 is a flowchart of a process performed by an information control unit on the meter side shown in FIG.

FIG. 4 is a block diagram showing a configuration of a meter side provided with a determination unit for determining necessity of storage in addition to the configuration of FIG.

5 is a flowchart of a process performed by an information control unit on the meter side shown in FIG.

[Explanation of Codes] 1 antenna 2 wireless transceiver 3 information control unit 4 memory unit 5 integrated value holding unit 6 weighing unit 7 antenna 8 wireless transceiver 9 information control unit 10 display unit 11 transmission data input unit 12 determination unit

Claims (2)

[Claims] 1. A wireless meter-reading device for receiving meter control data from a master station and transmitting meter reading data to the master station,
Wireless meter transmission / reception means for receiving control signals from the master station side and transmission of meter reading data to the master station side, storage means, and control signals received by the wireless transmitter / receiver means to display the current meter reading data of the meter. The wireless transmission / reception means is read by causing the wireless transmission / reception means to transmit the same as the current meter reading data, and the storage means is newly stored as the previous meter reading data, and the previous meter reading data already stored in the storage means is read. A wireless meter-reading device, comprising: 2. The determination means for determining whether to store the current meter reading data of the meter as the previous meter reading data in the storage means according to a control signal from the master station side. Wireless meter reading device.