JPH076894U - Remote meter reading device - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent a difference between the meter reading value and the display value in remote meter reading. [Structure] A rotating body 1 that continuously rotates to perform measurement according to a flow rate of a measurement target, and a rotating body 1 provided on the rotating body 1.
Detection holes 2A and 2B for determining the position of the
Optical sensors 3a and 3b for detecting A and 2B, a control unit 4 that controls the optical sensors 3a and 3b, and a pulse output unit 5 that is connected to the control unit 4 and outputs for each unit usage amount.
And a power source unit 6 which is connected to the control unit 4 and supplies power, constitute a remote meter-reading device 8, and the detection hole 2 of the rotating body 1
The positions of A and 2B are arranged such that the detection holes 2A and 2B are shifted so that the detection timings of the optical sensors 3a and 3b are different, and the two optical sensors 3a and 3b are alternately monitored to perform meter reading. And

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a remote meter-reading device used for gas, water meters, etc., for meter-reading by converting what is mechanically measured into an electric signal.

[0002]

[Prior art]

 For example, as shown in Fig. 2, there is a remote meter-reading device that outputs a contact pulse for each unit dose and monitors the flow rate at a remote location in order to rationally perform meter-reading of gas, water, etc.

Conventionally, in this type of remote meter-reading device, a rotating shaft 7 that is a mechanical display mechanism that rotates according to the flow rate of a non-measurement target such as gas is moved to perform count display, and this mechanical reading is performed. A magnet 9 is provided on the mechanism, a reed switch 10 is provided on the track through which the magnet 9 passes, and the control unit 4 and its power supply unit 6 and the signal detected by the reed switch 10 connected to this control unit 4 are used as a unit. A remote meter reading device 8 is configured by providing a pulse output unit 5 that outputs for each usage amount, and at the same time when a gas or the like flows, the magnet 9 moves, passes over the reed switch 10, operates the reed switch 10, and operates the pulse signal. To send.

By receiving this pulse signal, it becomes possible to monitor the flow rate at a remote place. For example, taking an LP gas delivery company as an example, the usage amount can be known, which saves the labor of meter reading. In addition, it helps prevent the outgassing that is often found in LP gas.

(See, for example, Japanese Utility Model Laid-Open No. 55-157721)

[0006]

[Problems to be solved by the device]

 However, in the conventional remote meter reading device that uses the reed switch 10 and the magnet 9 having the above-described configuration to count contact pulses, there is a problem in that the integrated display of the remote meter reading device 8 itself and the pulse output count value do not match. .

Since this is a mechanical type in which the magnet 9 is moved by the flow rate of gas or the like to operate the reed switch 10, there is a problem that chattering may occur in the reed switch 10 itself depending on the usage state of gas or the like. It was

Further, depending on the stopped state, the rotating body 7 moves due to the expansion of gas such as gas in the remote meter-reading device 8, the magnet 9 rotates in the reverse direction, and the contact of the reed switch 10 causes chattering despite counting. There is a problem in that it may be erroneously counted, which may cause a difference between the integrated display of the mechanical remote meter reading device 8 itself and the remote meter reading value.

[0009]

[Means for Solving the Problems]

 The present invention solves the above-mentioned problems, and includes a rotating body that continuously rotates to perform metering according to the flow rate of a measurement target, and two positions that determine the position of the rotating body provided on the rotating body. Detection holes, two optical sensors for detecting these detection holes, a control unit that controls these optical sensors, a pulse output unit that is connected to this control unit and outputs each unit usage amount, In a remote meter reading device comprising a power supply unit connected to a control unit to supply power, the positions of the two detection holes provided in the rotating body are adjusted so that the detection timings of the two optical sensors are different from each other. The detection holes are arranged in a staggered manner, and two optical sensors are alternately monitored to perform meter reading.

[0010]

[Action]

 With the configuration described above, the two detection holes provided in the rotating body are alternately monitored using the two optical sensors, and the position of the rotating body is detected by the control unit. The second optical sensor is stopped until the first optical sensor detects the detection, and after the first optical sensor detects, the first optical sensor is stopped and at the same time the second optical sensor is driven. With this, after detecting the two detection holes, the control unit outputs a pulse signal for each unit usage amount to the pulse output unit.

In addition, regarding erroneous detection of the optical sensor due to expansion or chattering of the non-measuring body inside the remote meter-reading device, the first optical sensor stops after the signal input from the first optical sensor in the control unit, Since the second optical sensor is in a signal input standby state, erroneous meter reading due to chattering or the like is prevented. Moreover, since the two optical sensors are alternately monitored, the power consumption of the two optical sensors is halved.

[0012]

【Example】

 A remote meter reading device according to an embodiment of the present invention will be described below with reference to the configuration diagram of the remote meter reading device shown in FIG.

In FIG. 1, reference numeral 1 denotes a rotor that rotates according to the flow rate of a measurement target such as gas, and two detection holes 2A and 2B for determining the position of the rotor 1 are provided. Reference numeral 3a or 3b denotes an optical sensor, which is provided at two places, a light emitting element and a light receiving element for detecting the two detection holes 2A and 2B.

Reference numeral 4 is a control unit that controls the optical sensor 3a or 3b, and 5 is a pulse output unit that is connected to the control unit 4 and outputs a signal detected by the optical sensor 3a or 3b for each unit usage amount. , 6 is a power supply unit, 7 is a rotary shaft for rotating the rotary body 1, and these constitute the remote meter-reading device 8.

Here, the optical sensor 3a or 3b has a light emitting element and a light receiving element arranged on both sides of the rotating body 1, and has detection holes 2A and 2B in the rotating body 1 which rotates around a rotating shaft 7 as an optical sensor. They are provided on the tracks of 3a or 3b respectively, and by displacing the positions of the detection hole 2A and the detection hole 2B so that these two optical sensors 3a or 3b do not turn on at the same time, they are arranged at the positions where they are not detected at the same time. is there.

Next, the operation of the above configuration will be described.

When the gas user uses gas, the rotating body 1 inside the remote meter-reading device 8 rotates, and first the first optical sensor 3a is turned on to detect the first detection hole 2A, and after detection, the first detection hole 2A is detected. The optical sensor 3a turns off. Next, at the same time when the first optical sensor 3a is turned off, the second optical sensor 3b is turned on to detect the second detection hole 2B. After being detected by the optical sensor 3a or the optical sensor 3b, a pulse signal is output from the pulse output unit 3.

As described above, the detection by the optical sensor 3a and the optical sensor 3b is set as one set, and is set as a unit usage amount, so that the flow rate is counted at a remote place.

In addition, the detection holes 2A and 2B move in response to the expansion of the gas caused by the state where the gas is not used, that is, the state where the rotating body 1 is stopped. If chattering occurs, the optical sensor 3a and the optical sensor 3b will erroneously detect. However, after the first optical sensor 3a in the control unit 2 detects the detection hole 2A, it turns OFF and the second optical sensor By waiting for the detection of the second detection hole 2B by the optical sensor 3b, erroneous detection due to chattering is eliminated. Moreover, since the optical sensors 3a and 3b are alternately monitored one by one, the power consumption of the two optical sensors 3a and 3b is halved, and the capacity of the power supply unit 6 is reduced.

[0020]

[Effect of device]

 As described above, the present invention has the following effects. By providing two optical sensors and two detection holes in the rotating body and shifting the detection timing of the detection holes, the detection position is shifted and the optical sensors are monitored alternately one by one, so the power consumption of the two optical sensors is reduced. It is halved, and the capacity of the power supply can be reduced.

Further, it is possible to prevent chattering of the rotating body and prevent erroneous detection. As a result, the value of the pulse output for remote meter reading can be made accurate, and the detected value of the remote detection device and the integrated display can be made consistent, so that the amount of gas used and the meter reading value can be matched. A useful remote meter reading device could be provided.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a remote meter-reading apparatus showing an embodiment of the present invention.

FIG. 2 is a configuration diagram of a remote meter-reading device showing a conventional example.

[Explanation of symbols]

 1 Rotating Body 2A Detection Hole 2B Detection Hole 3a Optical Sensor 3b Optical Sensor 4 Control Section 5 Pulse Output Section 6 Power Supply Section

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor, Nao Shimada, 3-3 Shinjuyoji, Kashiwa-shi, Chiba Prefecture, Japan Home Tech Co., Ltd. (72) Inventor, Kuniaki Ito, 3-1, Shinjuyomi, Kashiwa-shi, Chiba, Ltd. In Home Tech

Claims (1)

[Scope of utility model registration request] 1. A rotating body (1) that continuously rotates to perform metering according to a flow rate of a measurement target, and two detections for determining the position of the rotating body (1) provided on the rotating body (1). The holes (2A) and (2B) and these detection holes (2A) and (2
B) two optical sensors (3a), (3) for detecting
b), a control unit (4) for controlling these optical sensors (3a) and (3b), and a signal detected by the optical sensors (3a) and (3b) connected to the control unit (4). A remote meter-reading device comprising a pulse output unit (5) for outputting a unit amount of use and a power supply unit (6) connected to the control unit (4) to supply power to the rotary body (1). The positions of the two detection holes (2A) and (2B) provided in (2) are set so that the detection timings of the two optical sensors (3a) and (3b) are different from each other. The two optical sensors (3a), (3
A remote meter-reading device, characterized in that b) is alternately monitored to perform meter-reading.