JPH076893U - Wireless meter reading device - Google Patents

Abstract

(57) [Abstract] [Purpose] In a wireless meter reading device, when remotely metering a water meter, for example, when the rainwater enters the meter box, the antenna is prevented from being submerged. [Structure] A water meter 15, a wireless transceiver 16 and an antenna 21 are provided in a meter box 10, and
The antenna 21 is attached to the lower surface of the upper lid 12 of the meter box 10 via a magnet 22.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wireless meter-reading device that operates a wireless meter-reader to remotely meter a water meter wirelessly.

[0002]

[Prior art]

 Conventionally, for example, in a gas meter, a wireless transmission / reception device is attached to it, and by operating a wireless meter reading device, transmission / reception is performed with the wireless transmission / reception device via an antenna.For example, remote meter reading of the gas meter is possible without entering the site. There is something to do.

[0003]

[Problems to be solved by the device]

 However, when such a wireless meter-reading device is applied to remote meter-reading of a water meter, it is customary to put it in the meter box and bury it in the ground in the case of a water meter. If it gets in, there is a problem that the antenna is submerged and the wireless transmission / reception distance becomes shorter, or the wireless transmission / reception becomes impossible. There is also a problem that the antenna collides with the meter box due to the shaking of the water accumulated in the meter box and the antenna is destroyed by the impact.

Therefore, an object of the present invention is to prevent the antenna from being submerged when water enters the meter box when wirelessly metering a water meter remotely in a wireless meter reading device.

[0005]

[Means for Solving the Problems]

 Therefore, the present invention provides a meter box that includes an antenna 21, a wireless transmission / reception device 16 that transmits / receives data to / from a wireless transmission device via the antenna 21, and a water meter 15 that sends measurement results to the wireless transmission / reception device 16. The antenna 21 is provided inside the meter box 10, and the antenna 21 is attached to the upper surface inside the meter box 10.

[0006]

[Action]

 In this invention, the antenna 21 is held so as not to be submerged unless the inside of the meter box 10 is filled with rainwater 23, for example.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of the inside of a meter box of a wireless meter reading apparatus according to an embodiment of the present invention.

Reference numeral 10 in the figure is a substantially rectangular meter box. The meter box 10 is composed of a box body 11 and an upper lid 12, each of which is made of a metal material, and the upper lid 12 is attached to the box body 11 by a hinge (not shown) so as to be openable and closable. Inside the meter box 10, one end of a water pipe 13 is inserted through the side plate 11a of the box body 11 and one side of the water meter 15 is connected to the meter box 10 while the side plate 11b of the box body 11 is penetrated. It is provided by inserting one end of the pipe 14 and connecting the other side of the water meter 15 thereto.

A wireless transmitter / receiver 16 is attached to the lower surface 11b of the box body 11. As shown in FIG. 2, the wireless transmission / reception device 16 includes a microcomputer 17, a transmission / reception circuit 18, a battery 19, and a power supply control circuit 20. The micro computer 17 is connected to a telemeter terminal (not shown) of the water meter 15.

On the other hand, an antenna 21 is provided which is connected to the transmission / reception circuit 18 with a signal line and extends to the outside of the wireless transmission / reception device 16. As shown in FIG. 1, the antenna 21 is rod-shaped and has a base end attached to a magnet 22 and is attached to the lower surface 12 a of the upper lid 12 via the magnet 22.

When the meter of the water meter 15 is read using the wireless meter reading device, a wireless meter reading device (not shown) is operated to wirelessly send a transmission request together with, for example, an ID code. Then, the wireless transmission / reception device 16 receives the ID code and the transmission request at the transmission / reception circuit 18 through the antenna 21 and inputs them to the microcomputer 17. The microcomputer 17 determines whether or not the received ID code matches its own ID code, and if they match, the measurement result of the water meter 15 is wirelessly transmitted from the antenna 21 by the transmission / reception circuit 18. As a result, the measurement result of the water meter 15 can be read by the wireless meter.

Then, as shown by the chain double-dashed line in FIG. 1, when rainwater 23 enters the meter box 10, for example, the antenna is prevented from being submerged unless the meter box 10 is filled with the rainwater 23. Hold 21.

In the illustrated embodiment described above, the water meter 15, the wireless transmission / reception device 16 and the antenna 21 are separately provided. However, in the case of the water meter 15 including the microcomputer, the water meter 15 may have the wireless transceiver 16 built therein as shown in FIG.

Further, as shown in FIG. 4, the wireless transmission / reception device 16 and the antenna 21 may be integrally provided, and the wireless transmission / reception device 16 may be attached to the upper lid 12 via the magnet 22. Then, the submersion of both the antenna 21 and the wireless transmission / reception device 16 is prevented.

In the illustrated embodiment described above, the antenna 21 is attached to the upper lid 12 via the magnet 22. However, although not shown, the antenna 21 may be attached to the upper lid 12 via, for example, a double-sided tape or an adhesive.

[0016]

[Effect of device]

 From the above, according to the present invention, in the wireless meter reading device, for example, when rainwater enters the meter box, the antenna is held so as not to be submerged unless the meterbox is filled with the rainwater. The submersion of water can be eliminated. Therefore, it is possible to prevent the wireless transmission / reception distance from becoming shorter or the wireless transmission / reception impossible due to the submersion of the antenna. In addition, it is possible to prevent the antenna from colliding with the meter box due to the shaking of water accumulated in the meter box and being destroyed by the impact.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of the inside of a meter box of a wireless detection device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of the wireless transmission / reception device and a connection state of the water meter and an antenna.

FIG. 3 is a schematic explanatory diagram showing another connection configuration of the water meter, the wireless transmission / reception device, and the antenna.

FIG. 4 is a schematic explanatory view showing still another connection configuration of the water meter, the wireless transmission / reception device, and the antenna.

[Explanation of symbols]

 10 meter box 15 water meter 16 wireless transmitter / receiver 21 antenna 23 rainwater (water)

Claims (1)

[Scope of utility model registration request] 1. A meter box is provided with an antenna, a radio transmitter / receiver for transmitting / receiving data to / from a radio transmitter via the antenna, and a water meter for sending a measurement result to the radio transmitter / receiver. A wireless meter reading device in which the antenna is attached to the upper surface in the box.