JPH09305887A - Rotator telemeter and transmitter for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotator telemeter which improves durability to high-speed rotations and does not cause any axial vibration of a rotator by fitting a solar battery into the central bored section of a loop-shaped transmission antenna body and connecting the solar battery with a telemeter transmitter. SOLUTION: A solar battery 20 is fitted into a central bored part 6 of a loop-shaped transmission antenna body 5. A reception antenna body 9 provided while facing the transmission antenna body 5 is connected to an FM receiver by a reception antenna line 10. A light source 21 is fitted into a central bored part 9a of the reception antenna body 9. Since the solar battery 20 is always constantly and uniformly irradiated with light from the light source 21, the high-quality DC current of a little ripple can be supplied. The DC current provided from the solar battery 20 is rectified by a constant voltage circuit and sent to a telemeter transmitter 4 of a rotator telemeter 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotating body telemeter capable of measuring stress, temperature, vibration, etc. of a rotating body and observing the stress from the outside.

[0002]

2. Description of the Related Art Conventionally, as this type of rotary telemeter, there is Japanese Utility Model Laid-Open No. 6-59997, "Transmitter for rotary telemeter", filed by the present applicant. 3 is a partially cutaway sectional view of the rotary telemeter disclosed in the above application, and FIG. 4 is a view taken along the line AA of FIG.

In these figures, 1 is a rotary body shaft end, and 2 is
Is a telemeter case screwed to the rotary body shaft end 1, 3 is a power source (battery) housed in the telemeter case 2,
4 is also a telemeter transmitter, 5 is a transmitting antenna ring fitted in the telemeter case 2 with an adhesive,
6 is a central hole of the transmitting antenna ring 5, 7 is a sensor (gauge) set at a portion (not shown) such as temperature, vibration or pressure of the rotating body to be measured, and 8 is the telemeter transmitter 4 To the lead wire, 9 is the receiving antenna ring,
Reference numeral 10 is a receiving antenna wire connected to an FM receiver (not shown), 11 is a telemeter terminal, 12 is an antenna connecting wire, 13 is a fitting portion of the transmitting antenna ring 5 to the telemeter case 2, and 14 is the above-mentioned. It is a male screw portion of the rotary body shaft end 1 that is screwed into a female screw portion of the telemeter case 2.

[0004]

In the conventional rotary body telemeter described above, a lithium battery is used as a power source. A rotating transformer may be used instead of the battery. However, both the battery and the rotary transformer require a large space for the equipment because they are provided. Further, the battery and the transformer are heavy, but if the additional weight attached to the shaft end of the rotating body is large, it causes vibration. In addition, batteries and transformers lack durability against large centrifugal forces. In addition, batteries have a limited usage time and need to be replaced.

The present invention has been devised in view of the above-mentioned problems of the prior art, and it is durable against high speed rotation by attaching a small and lightweight power source which does not need to be replaced semipermanently to the rotary telemeter. An object of the present invention is to provide a rotating body telemeter and a transmitting device for the rotating body telemeter, which have high properties and do not cause shaft vibration of the rotating body.

[0006]

In order to achieve the above object, a transmitter for a rotary telemeter according to the first invention of the present application has a telemeter case fixed to a shaft end of a rotary body, and a telemeter transmitter housed inside the telemeter case. And a transmitting antenna body of a ring-shaped telemeter that is fitted to the end of the telemeter case opposite to the shaft end of the rotating body, in the transmitting device of the rotary telemeter, a central hole portion of the ring-shaped transmitting antenna body. The solar cell is inserted into the and the solar cell is connected to the upper telemeter transmitter.

According to a preferred embodiment of the transmitting device of the rotary telemeter of the present invention, the solar cell and the telemeter transmitter are preferably connected via a constant voltage circuit.

A rotary telemeter according to a second aspect of the present invention is a transmitter for the rotary telemeter, and an annular stationary-side receiving antenna provided to face the annular transmitting antenna of the transmitting apparatus. It has a light source fitted in a holed portion in the center of the receiving antenna body, and the light source illuminates the solar cell.

Next, the operation of the present invention will be described. Attach a ring-shaped transmitting antenna body to the end of the telemeter case attached to the end of the rotor axis opposite to the end of the rotor axis, and insert a solar cell into the hole with a center hole. Is supplying electricity to. Solar cells are small and lightweight, have excellent durability against centrifugal force, and have little deterioration due to use, so they do not need to be replaced and can be used semipermanently. The voltage obtained by the solar cell is a DC voltage with ripples depending on the change of the irradiation amount of light, so it may be rectified by using a constant voltage circuit and used as the power source of the rotary telemeter.

The light source for irradiating the solar cell with light is fitted in the central perforated portion of the annular receiving antenna body provided facing the annular transmitting antenna body provided in the transmitting device of the rotary telemeter. Therefore, the irradiation of light to the solar cell is always constant and uniform, and the solar cell can supply high-quality electricity with less ripple.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a partially cutaway sectional view of a rotary telemeter according to the present invention. FIG. 2 is a circuit diagram of the constant voltage circuit. In these figures, the same parts as those of the rotary telemeter shown in FIGS. 3 and 4 described as the prior art are designated by the same reference numerals.

In FIG. 1, reference numeral 1 is a shaft end of the rotating body. Two
Is a telemeter case fixed to the rotary shaft end 1 by a screw portion 14. Reference numeral 4 is a telemeter transmitter housed inside the telemeter case 2, and a sensor 7 is provided with a lead wire 8
Connected through. Reference numeral 5 denotes a ring-shaped transmitting antenna body fitted in a fitting portion 13 at an end portion of the telemeter case 2 opposite to the rotary body shaft end and having a hole portion 6 in the center. The transmitting antenna body 5 is a printed circuit board such as bakelite plated with metal, and is glued to the fitting portion 13. Reference numeral 9 is a receiving antenna body provided facing the transmitting antenna body 5, and is connected to an FM receiver (not shown) by a receiving antenna wire 10. Reference numeral 11 is a telemeter terminal, a part of which is connected to the transmitting antenna body 5 by an antenna connection line 12. Reference numeral 15 is a transmitter of the rotary telemeter. Reference numeral 16 is a space for the constant voltage circuit, in which the constant voltage circuit 23 hardened with resin or the like is disposed.

Reference numeral 20 denotes a solar cell, which is a transmitting antenna body 5.
It is fitted into the central perforated portion 6 of the. Reference numeral 21 denotes a light source (lamp), which is fitted in the central perforated portion 9 a of the receiving antenna body 9.

Next, the constant voltage circuit 23 will be described. As shown in FIG. 2, the constant voltage circuit 23 is a solar cell (Solar
Cell) 20 and the telemeter transmitter 4 are connected to rectify the rippled DC current generated in the solar cell 20 and send it to the telemeter transmitter 4. The constant voltage circuit 23 includes a constant voltage circuit IC22 and capacitors C1 and C2 connected in parallel with the constant voltage circuit IC22. Constant voltage circuit IC2
Reference numeral 2 is a so-called three-terminal positive voltage regulator, which removes ripples in the solar cell 20 in cooperation with capacitors C1 and C2 connected in parallel and having a capacity of about 1 μF.

Next, the operation of this embodiment will be described. Since the solar cell is fitted in the center of the transmitting antenna body 5 and the light source (lamp) 21 is fitted in the central perforated portion 9a of the receiving antenna body 9 provided facing the transmitting antenna body 5, Since the light from 21 is constantly and uniformly applied to the solar cell 20, it is possible to supply a high-quality direct current with little ripple. Since the voltage of the DC current obtained from the solar cell contains some ripple, it is rectified by the constant voltage circuit 23 and then sent to the telemeter transmitter 4 of the rotary telemeter 15.

The solar cell is small and lightweight, has excellent durability against centrifugal force, and has little deterioration due to use.
It does not need to be replaced like a lithium battery. Therefore, it does not cause vibration of the rotating body and is excellent in durability as a telemeter.

The present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the invention.

[0018]

As described above, the rotary telemeter of the present invention uses the solar cell as a power source and supplies the energy for transmission by the telemeter as light. Therefore, the telemeter transmitter is small and lightweight, and durable. It has excellent properties such as not causing vibration in the rotating body.

[Brief description of drawings]

FIG. 1 is a partially cutaway sectional view of a rotary telemeter of the present invention.

FIG. 2 is a circuit diagram of a constant voltage circuit.

FIG. 3 is a partially cutaway sectional view of a conventional rotary telemeter.

FIG. 4 is a view on arrow AA of FIG.

[Explanation of symbols]

 1 Rotating Body Shaft End 2 Telemeter Case 4 Telemeter Transmitter 5 Transmission Antenna Body 6 Central Perforated Area 9 Reception Antenna Body 20 Solar Cell 21 Light Source (Lamp) 23 Constant Voltage Circuit

Claims (3)

[Claims] 1. A telemeter case fixed to a shaft end of a rotary body, a telemeter transmitter housed inside the telemeter case, and a telemeter case fitted to an end of the telemeter case opposite to the shaft end of the rotary body. A rotary telemeter transmission device comprising an annular transmission antenna body, characterized in that a solar cell is fitted in a central hole of the annular transmission antenna body and the solar cell and an upper telemeter transmitter are connected. And a transmitter for a rotary telemeter. 2. The transmitting device for a rotary telemeter according to claim 1, wherein the solar cell and the telemeter transmitter are connected via a constant voltage circuit. 3. A transmitter for a rotary telemeter according to claim 1 or 2, and an annular stationary side receiving antenna provided to face the annular transmitting antenna of the transmitter, and a receiver. A rotating body telemeter, comprising: a light source fitted in a central hole of the antenna body, wherein the solar cell is illuminated by the light source.