JPS5841557B2 - Operation confirmation method for power generation telemeter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a power generating telemeter comprising a transmitting section that generates a pulse signal every time a certain amount of water, gas, electricity, etc. is used, and a measuring section that counts this pulse signal. The present invention relates to an operation confirmation method for inspecting whether the transmitting section reliably operates when equipment is installed.

The present invention can be applied to power-generating telemeters that remotely measure the amount of water used, as well as gas, electricity, or other fluids. explain.

In general, power-generating telemeters store the energy of flowing water little by little in a spring, etc., and when a certain amount of water flows, the energy stored in the spring is instantly released, and the power is used to create a magnet, such as a permanent magnet. The pulse voltage is instantaneously driven to generate a pulse voltage in the induction winding, and this pulse voltage is guided to a receiving section located at a remote location Jc, and the metering mechanism of the receiving section is driven step by step.

This telemeter system has the excellent feature of not using any external power sources such as batteries, so it has recently begun to be adopted by water stations around the country in place of conventional meters with built-in batteries.

In the power generation type telemeter mentioned above, the power generation unit is obtained from the energy obtained from water, but since the power generation unit is usually installed 0.5 to 1.5 meters underground together with the water meter, the transmission unit is reliable. It was virtually impossible to test whether or not it worked.

Also, in order for the transmitter to generate a single pulse signal, normally
1d of water must flow, and in order to actually run 1m of water and test it, the commonly used 13mm φ~20
mφ water meters took several hours and were extremely inefficient.

The present invention has been made to solve the above-mentioned drawbacks in the prior art.In particular, it is possible to detect whether or not the transmitter is operating reliably in a short period of time by flowing a small amount of water. This is an attempt to provide a method for confirming operation.

FIG. 1 is a diagram for explaining an example of a power generation telemeter to which the present invention is applied. In the figure, 1 indicates a meter section, ■ indicates a power generation section, and ■ indicates a reception section. is rotated in accordance with the amount to be measured, for example, the amount of water used, and is transmitted to the driving permanent magnet 3 via the gear train 2 to rotate the permanent magnet 3.

The meter section I and the power generation section (2) are isolated by a glass window 4, a water shield tube 5, etc., and the permanent magnet 6 of the power generation section H rotates following the permanent magnet 3 of the meter section I via the water shield tube 5. It is arranged like this.

The rotation of the driven permanent magnet 6 is transmitted to the generator 9 via the reduction gear group 7, instantaneous feed mechanism 8, etc., and for example, the rotation of the permanent magnet 20 of the generator 9 is transmitted every time 1 d of water is used (see Fig. 2).
is activated instantaneously to generate a pulse voltage in the induction winding 21 (see FIG. 2).

This pulse voltage is transmitted through two transmission lines 10 and 10' to the pulse motor 11 of the receiving section (2), and a pulse current is passed through the armature winding 22 (see Fig. 2) of the pulse motor to drive the rotor 23. Rotate by a predetermined angle.

The rotation of the rotor 23 is controlled by the counter 13 via the gear group 12.
and drives the counter 13 step by step.

In a power-generating telemeter like the one above, the meter section and power generation section are usually located 0.5 to 1.5 meters underground, as mentioned above.
At the time of installation, construction work is handed over in the presence of waterworks officials, but since the meter section and power generation section are buried underground, it is difficult to confirm whether or not they will work reliably. It is difficult to check the amount of water required for the counter to advance one step, for example, 1 m3 of water is poured into the meter and the operation of the meter at that time is checked. As mentioned above, it takes several hours to check. There were some drawbacks.

The present invention was made to solve the drawbacks of the prior art as described above, and one embodiment thereof is shown in FIG.

In FIG. 2, a permanent magnet 24°, a magnetic sensing element 25 such as a magnetoresistive element or a reed switch, and a test lead wire 26 are shown.
is particularly added according to the present invention, and the permanent magnet 24 is attached to any gear shaft of the reduction gear group 7 shown in FIG. The resistance value or contact state of the permanent magnet 24 changes as the permanent magnet 24 rotates.

Therefore, during inspection, the inspection lead wire 26 and the transmission line 10.1
Connect the inspection device 27 between either one of the lines 0',
When the rotating shaft 1 is actually rotated by flowing water, the reduction gear group 7 is also rotated accordingly, and the resistance value or contact state of the magnetic sensing element 25 is changed by the rotation of the permanent magnet 24.
The change is detected by current detection means 2 such as an ammeter or counter.
8, it can be confirmed whether or not the meter section in the transmission section and the gear shaft to which the permanent magnet 24 of the power generation section are mounted are reliably operating.

In addition, since the operation after the instantaneous feed mechanism is relatively reliable, there is almost no problem in practice as long as the operation up to the reduction gear group can be confirmed at the on-site inspection.

As is clear from the above description, according to the present invention, the operation of the transmitter can be confirmed at low cost with a relatively simple configuration, and has the advantage of being able to be confirmed quickly and efficiently.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an example of a power generation telemeter system to which the present invention is applied, and FIG. 2 is a diagram for explaining an operation confirmation system according to the present invention. ■・・・Meter section, ■・・・Power generation section, ■・
. . . Receiving unit, 1 . . . Rotating shaft that rotates according to the measured flow rate, 7 . . . Reduction gear group, 8 . . .
...instantaneous feed mechanism, 9...generator, io, i
o'...Transmission line, 11...Pulse motor, 20...Permanent magnet of generator 9, 21...
... Induction winding of generator 9, 22 ... Armature winding of pulse motor 11, 23 ... Rotor of pulse motor 11, 24 ... Permanent magnet , 25...
...Magnetic sensing element, 26...Inspection lead wire, 2
7... Inspection device, 28... Current detection means.

Claims (1)

[Claims] 1. A rotating shaft that rotates according to the flow rate to be measured, a group of reduction gears for decelerating the rotation of the rotating shaft, an instantaneous feed mechanism that is operated in response to rotation from the group of reduction gears, and the instantaneous feed mechanism. a generator that generates a pulse signal in response to the operation of the
It has two transmission lines, one end of which is connected to the generator, for transmitting the output pulse signals thereof, and a pulse motor, which is connected to the other end of the transmission line and is driven in steps by the pulse signals from the transmission lines. In the power-generating telemeter, a permanent magnet is attached to one of the gear shafts of the reduction gear group, a magnetically sensitive element is provided near the permanent magnet, and the magnetically sensitive element is attached to one of the two transmission lines. The book is connected to one end of a test lead provided separately, and a DC power source and current detection means are connected to the other end of the wire to detect changes in the magnetic sensing element. Operation confirmation method for power-generating telemeters.