JP2001297389A - Sensor, sensor signal output method and motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform the output of a sensor signal from a sensor to the outside, power supply from the outside and power supply to a motor by wireless. SOLUTION: Concerning, these sensor, sensor signal output method and motor, power required for a sensor (2) and a motor (40) is supplied from a power supply means (12) to a power supply receiving part (11) provided in the sensor (2) and the motor (40) by radio, a sensor signal (3) is outputted by radio and a control signal (41) to the motor (40) is supplied by radio.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sensor device, a sensor signal output method, and a motor device. To obtain a wireless sensor device and to drive the motor wirelessly.

[0002]

2. Description of the Related Art Conventionally, a sensor device and a motor device of this kind which have been used are disclosed in, for example, Japanese Patent Application Laid-Open No. 62-27.
No. 8408 and an encoder disclosed in
The resolver disclosed in JP-A-318725 and a servomotor can be cited, although not cited.

[0003]

Since the conventional sensor device and motor device are configured as described above, the following problems exist. That is, in any of the above-described sensor devices, as shown in FIG. 3, the sensor signal 3 output from the sensor 2 connected to the detected member 1
Is output to the outside via the wire 4, and the power required by the sensor 2 is supplied from the external power supply 5 to the sensor 2 via the power supply line 6, and provided to the sensor 2 when the external power supply 5 fails. Power was obtained from the battery 7. Therefore, when incorporating into complicated machine tools, robots, and various types of manufacturing apparatuses, the number of wires and power supply lines increases, and maintenance after assembly requires a great deal of labor and cost.
Also, the backup battery provided in the sensor,
It is necessary to replace the battery after managing its life. When a large number of sensors are used, the cost required for replacing the battery is also a problem. Further, although not shown, the number of control signal lines and power supply lines also increased in the motor device, and the wiring was complicated for mounting a large number of devices, and the maintenance work was not easy.

The present invention has been made to solve the above problems, and in particular, wirelessly outputs a sensor signal output from a sensor to the outside and wirelessly supplies a power supply required by the sensor from the outside. An object of the present invention is to provide a motor device that supplies a wireless sensor device while supplying the motor device wirelessly.

[0005]

A sensor device according to the present invention detects a rotational or linear movement position of the detected member by a sensor connected to the detected member and outputs the detected position as a sensor signal to the outside. In the device, power required by the sensor is wirelessly supplied from a power supply unit to a power receiving unit provided in the sensor, and the sensor signal is wirelessly output. , An encoder, a resolver, a synchro, and a sensor signal output method according to the present invention, wherein the sensor connected to the detected member detects the rotation or linear movement position of the detected member, and the sensor In a sensor signal output method in which a signal is output to the outside as a signal, a power supply required by the sensor is wirelessly provided from a power supply unit to the sensor. A method of supplying the power to a power receiving unit and outputting the sensor signal wirelessly. Further, in a motor device configured to rotate a driven body by a motor connected to the driven body, a power supply required by the motor is provided. Is supplied wirelessly from a power supply unit to a power receiving unit provided in the motor, and a control signal to the motor is supplied wirelessly.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a sensor device, a sensor signal output method and a motor device according to the present invention will be described below with reference to the drawings. The same or equivalent parts as those in the conventional example will be described using the same reference numerals. In FIG. 1, reference numeral 1 denotes a detected member made of a rotary or linear motion type member such as a robot or a machine tool, and the detected member 1 includes a resolver, an encoder, a synchro, etc. , A sensor 2 for detecting a linear movement position and the like.

[0007] The sensor 2 is provided with a detection signal transmitting unit 10 and a power receiving unit 11.
Is wirelessly configured so that the sensor signal 3 obtained by the sensor 2 is output to the outside by a wireless carrier 4A such as radio waves or infrared rays.

The power receiving section 11 is configured to be supplied from an external power supply means 12 to the power receiving section 11 via a wireless power carrier wave 6A. The power supply unit 12 is, for example, a radio wave that emits high-frequency waves and the like, and receives the high-frequency waves and the like by a power receiving unit 11 having a receiving coil and the like. The power supply is supplied to each circuit of the sensor 2 as a power supply through a power supply stabilizing circuit, or the wirelessly-fed power is stored in a means such as an electromagnetic coupling or a battery or a capacitor (not shown) for secondary use. Is adopted. The power supply unit 12 and the power receiving unit 11 are not limited to the above-described configurations, and other configurations can be used. In the configuration shown in FIG. 2, a control signal 41 for controlling the motor 40 for driving the driven body 30 is wirelessly supplied by the carrier 4Aa, and the power from the power supply means 12 is supplied by the power carrier 6A in the same manner as described above. The configuration is such that the power is supplied to the power receiving unit 11 of the motor 40.

[0009]

The sensor device, the sensor signal output method, and the motor device according to the present invention are configured as described above, so that the following effects can be obtained. That is, the output of the sensor signal from the sensor to the outside and the supply of power to the sensor can be performed wirelessly, and a completely wireless sensor and motor device can be obtained.
Therefore, even when many sensors and motor devices are used for a robot or the like, installation and maintenance become much easier than before.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a sensor device according to the present invention.

FIG. 2 is a block diagram showing another embodiment of FIG. 1;

FIG. 3 is a block diagram showing a conventional sensor device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Detected member 2 Sensor 3 Sensor signal 11 Power receiving part 12 Power supply means 30 Driven body 40 Motor 41 Control signal

Claims (4)

[Claims] A sensor (2) connected to a detected member (1) detects a rotational or linear movement position of the detected member (1) and outputs the detected position as a sensor signal (3) to the outside. In the sensor device, the power required by the sensor (2) is wirelessly supplied from a power supply means (12) to a power receiving unit (11) provided in the sensor (2), and the sensor signal (3) is transmitted wirelessly. A sensor device characterized in that the sensor device is configured to output the signal. 2. The sensor according to claim 1, wherein the sensor is one of an encoder, a resolver, and a synchro.
The sensor device according to claim 1. The rotation or linear movement position of the detected member (1) is detected by a sensor (2) connected to the detected member (1), and is output to the outside as a sensor signal (3). In the sensor signal output method, the power required by the sensor (2) is wirelessly supplied from a power supply means (12) to a power receiving unit (11) provided in the sensor (2), and the sensor signal (3) Is a sensor signal output method characterized by wirelessly outputting. 4. A motor device in which the driven body (30) is rotated by a motor (40) connected to the driven body, wherein power required by the motor (40) is supplied by a power supply means.
(12) from the power receiving unit (11) wirelessly provided to the motor (40)
And a control signal (41) to the motor (40) is supplied wirelessly.