JPH10104022A - Sensor device for tracking antenna driving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a low cost sensor device in a simple structure for a tracking antenna driving device capable of detecting a relative rotation angle velocity by being used in the tracking antenna driving device mounted on a moving body. SOLUTION: There is disclosed a sensor device for a tracking antenna driving device that is mounted on a moving body such as a vehicle and receives a communication electric wave from a satellite station. It comprises a circular body 2 having slit type apertures 21 which are formed with predetermined intervals along the circumference thereof, a support body 3 that rotatably supports the circular body 2 and a light projector 41 and a light receiver 42 that are fixed to the support body 3 and detect the displacement of the circular body 2 in the rotating direction by virtue of the apertures 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tracking antenna driving device used in a tracking antenna driving device which is mounted on a mobile body such as an automobile and adjusts the radio wave receiving direction of an antenna device to receive communication radio waves from an artificial satellite station. The present invention relates to a device sensor device.

[0002]

2. Description of the Related Art Conventionally, it is mounted on a moving body such as an automobile.
For example, a tracking antenna device that receives a communication radio wave from an artificial satellite station using a planar antenna device is used to transmit a communication radio wave using a tracking antenna driving device in order to receive a communication radio wave from an artificial satellite station with high efficiency using the antenna device. Attitude control is performed in an optimal direction for receiving. This tracking antenna driving device is used for detecting the horizontal rotation angular velocity of the moving object when the communication radio wave is interrupted by an obstacle or when the moving object rotates rapidly. A sensor device is used.

More specifically, as shown in FIG. 7, for example, a tracking antenna device is formed by a flat antenna A as an antenna device and a tracking antenna driving device for adjusting the horizontal angle of the flat antenna A, for example. You. The tracking antenna driving device drives a driving azimuth driving motor M by a control unit C in response to a detection signal from a gyro sensor S as a tracking antenna driving sensor device, and rotates the azimuth adjustment motor of the antenna device. The unit R is driven to control the horizontal attitude of the planar antenna A. Generally, as a sensor device for driving a tracking antenna,
A rotation angle at the time of rotation of the moving body is detected using a sensor device called a gyro sensor. As the gyro sensor, for example, a mechanical gyro sensor used for an inertial navigation device such as a ship or a shake prevention device of a video camera,
Various types such as a vibration type and an optical fiber type have been proposed. Further, in the above tracking antenna driving device, generally, attitude control is performed based on a detection signal of a gyro sensor for a horizontal rotation angle and a reception signal level of a communication radio wave of the antenna device for a vertical displacement. .

[0004]

By the way, the above gyro sensor is generally a high-precision component, but is an expensive component because it is formed by a precise mechanism. And
Similar to the vertical attitude control, the horizontal attitude is finely adjusted based on the reception signal level of the communication radio wave from the antenna device. The gyro sensor detects the horizontal rotational angular velocity to quickly adjust the attitude. It was used as a sensor device to control the height. Therefore, it has been desired to develop a low-cost sensor device for a tracking antenna driving device that detects the rotational angular velocity in the horizontal direction.

The present invention has been made in view of the above circumstances, and an object of the present invention is to detect a rotational angular velocity by using a tracking antenna driving device mounted on a moving body.
An object of the present invention is to provide an inexpensive sensor device for a tracking antenna driving device with a simple configuration.

[0006]

According to a first aspect of the present invention, there is provided a sensor device for a tracking antenna driving device which is mounted on a mobile body such as an automobile to receive a communication radio wave from an artificial satellite station. A tracking antenna driving device sensor device used for a tracking antenna driving device, comprising: a circular body having detection means formed at predetermined regular intervals along a circumference; and a rotatable circular body. It is provided with a supporting body to be supported, and detecting means fixed to the supporting body and detecting displacement of the circular body in the rotation direction by the detected means. Thus, the detection means detects displacement in the rotation direction of the detection means formed at predetermined regular intervals on the circumference of the circular body, and detects the rotation of the support.

According to a second aspect of the present invention, there is provided a tracking antenna driving device for a tracking antenna driving device which is mounted on a mobile object such as an automobile and receives communication radio waves from an artificial satellite station. Sensor device, comprising: a circular body having detection means formed at predetermined regular intervals along a circumference; a support body rotatably supporting the circular body; and a fixed body fixed to the support body. Detecting means for detecting the displacement of the circular body in the rotation direction by the detected means, and detecting the horizontal rotation angular velocity of the moving body equipped with the tracking antenna by a detection signal from the detecting means. I have. Thus, the displacement in the rotational direction of the detecting means formed at predetermined regular intervals on the circumference of the circular body by the detecting means is detected, and the rotational angular velocity of the support is detected.

According to a third aspect of the present invention, there is provided a sensor device for a tracking antenna driving device, wherein the detected means according to the first or second aspect is a slit-shaped opening, and the detecting means has a projector and a light receiver. Then, the transmitted light from the light projector is received by the light receiver and the displacement of the circular body is detected. Thus, the light transmitted through the opening of the light projector is received by the light receiver, and the displacement of the circular body is detected.

According to a fourth aspect of the present invention, there is provided a sensor device for a tracking antenna driving device, wherein the detected means is a light reflection adjusting means such as a stripe pattern in which dark and light colors are alternately arranged. Has a light emitter and a light receiver, and the light reflected from the light emitter by the light reflection adjusting means is received by the light receiver, and the displacement of the circular body is detected by a change in the amount of light. Thereby, the light emitter and the light receiver of the detecting means can be disposed facing one surface of the circular body.

According to a fifth aspect of the present invention, there is provided a sensor device for a tracking antenna driving device, wherein the detecting means according to the third or fourth aspect is configured such that the detecting means has a distance different from an interval formed by the detected means and different from an integer multiple. Two are arranged in the circumferential direction of the feature. As a result, a displacement signal of the circular body is output from two detecting means arranged in the circumferential direction of the circular body at a distance different from the interval formed by the detected means and different from an integer multiple.

In the sensor device for a tracking antenna driving device according to the sixth aspect, the circular body according to any one of the first to fifth aspects is formed by:
The magnetic body has different magnetic poles in a plane direction supported by the support. As a result, the circular body is attracted by the geomagnetism and is rotatably supported so as to be constantly directed in the same direction.

In the sensor device for a tracking antenna driving device according to a seventh aspect of the present invention, the circular body according to the first to sixth aspects is characterized in that:
It is to be supported in a floating state by a liquid fluid. Thus, the circular body is supported by the liquid fluid.

[0013]

1 to 3 show a first embodiment of a sensor device for a tracking antenna driving device according to the present invention.
The second embodiment is based on FIG.
An embodiment of the present invention will be described with reference to FIGS.

[First Embodiment] FIG. 1 is a side sectional view of a sensor device for a tracking antenna driving device according to a first embodiment. FIG. 2 is a perspective view of the sensor device for a tracking antenna driving device shown in FIG. FIG. 3 is a block diagram showing a control circuit of the sensor device for the tracking antenna driving device shown in FIG.

The sensor device 1 for a tracking antenna driving device is used for a tracking antenna driving device which is mounted on a moving body such as an automobile and receives communication radio waves from an artificial satellite station. A body 3 and a first sensor 41 which is fixed to the support 3 and corresponds to a detecting means for detecting displacement of the circular body 2 in a rotational direction by an opening 21 described later;
A control having a control circuit for detecting a horizontal rotation angular velocity of a moving object on which a tracking antenna is mounted based on detection signals from the second sensor and the first sensor 41 and the second sensor and controlling a tracking antenna driving device. Unit 5.

The circular body 2 is formed of a material having a large mass, such as an iron material, for example, and has a slit-shaped opening 2 corresponding to a detection means formed along the circumference of a cylindrical peripheral wall having a one-sided opening.
1 and a central concave portion 22 inside the upper bottom surface. The opening 21 has a predetermined length and a predetermined width,
A predetermined number is formed on the peripheral wall at predetermined regular intervals so that the outer peripheral dimension of the circular body 2 can be divided by an integer. The concave portion 22 is a support portion supported by the support 3 described later, and has a predetermined depth.

The support 3 supports the circular body 2 rotatably. The support 3 is in contact with the recess 22 to support the circular body.
1, a mounting base 32 in which a support portion 31 is formed and a mounting hole 33 for mounting the sensor device 1 for a tracking antenna driving device is formed, and a cross-shaped portion is formed around the support portion 31 of the mounting base 32. Each point has a guide projection 34. The guide projection 34 regulates the horizontal swing near the peripheral wall of the circular body 2 and guides the rotation. The guide protrusion 34 opposes the lower end of the peripheral wall to guide the vertical swing of the circular body 2. 34a are formed.

Each of the first sensor 41 and the second sensor 42 includes, for example, a light projecting unit using an infrared LED element that emits infrared light and a photodiode element that receives infrared light and outputs a light receiving signal. And a light receiving means, and is appropriately configured with a holding structure. Then, the opening 21 is projected from the outside of the peripheral wall of the circular body 2 on the mounting base 32 toward the direction of the support portion 31 from the light projecting means and received by the light receiving means inside the peripheral wall. Are provided in the circumferential direction of the circular body 2 at a distance different from the formed interval and different from an integer multiple. To the first sensor 41 and the second sensor 42, a drive signal for driving the light projecting means is output from a control circuit of the control unit 5, and a detection signal as a light receiving signal from the light receiving means is input to the control circuit. You.

The control section 5 has a control circuit shown in FIG.
The light transmitted from the light emitter through the opening 21 of the first sensor 41 and the second sensor 42 is received by the light receiver to detect the displacement of the circular body, and a detection signal based on the displacement detects the moving body on which the tracking antenna is mounted. Detects the horizontal rotation angular velocity of. For details, from ON to OFF and O
Displacement detection circuit 5 detects the time difference between switching from FF to ON
2 and 52, a posture control signal having a control speed corresponding to the rotation direction and the rotational angular speed of the circular body 2 is output to the drive control circuit 53, and is output to the pulse motor M of the tracking antenna driving device. Drive control. A driving control signal corresponding to the received signal level is input to the CPU 51 from a receiving circuit of a communication radio wave of an antenna device (not shown) toward the CPU 51, and the attitude control signal control amount stored in the memory 54 is controlled by the CPU 51. Will be corrected.

The sensor device 1 for a tracking antenna driving device described above is used for the tracking antenna driving device of the tracking antenna device shown in FIG. 7, and the rotational angular velocity in the horizontal direction of the tracking antenna device mounted on a moving body such as an automobile. Is detected. In the sensor device 1 for a tracking antenna driving device, the relative horizontal displacement between the circular body 2 and the support 3 that tends to stop due to inertia is caused by the rotation of the support 3 in accordance with the rotation of the moving body. The time difference between the switching of the first sensor 41 and the second sensor 42 from ON to OFF and the switching from OFF to ON is detected, and the rotation direction and the rotation angular velocity of the circular body 2 are calculated by the CPU 51 of the control unit 5. The direction of rotation of the circular body 2 is determined by the order of switching the first sensor 41 and the second sensor 42 from ON to OFF or from OFF to ON. From ON to OF of the sensor 41 and the second sensor 42
It is calculated from F or the number of times of switching from OFF to ON, that is, the number of openings 21 detected.

According to the sensor device 1 for a tracking antenna driving device described above, the first sensor 41 and the second sensor 42
As a result, the displacement in the rotational direction of the openings 21 formed at predetermined regular intervals on the circumference of the circular body 2 is detected, and the rotation of the support is detected. By detecting the relative horizontal displacement between the object and the moving body, the rotation angle and the rotation angular velocity can be detected with a simple configuration. Also, the opening 2 of the projector
1 is received by the light receiver and the displacement of the circular body is detected, so that the detecting means can be formed by inexpensive components. Further, a displacement signal of the circular body 2 is obtained from the first sensor 41 and the second sensor 42, which are arranged in the circumferential direction of the circular body 2 at a distance different from the interval at which the openings 21 are formed and different from an integer multiple. Is output, so that the rotational direction and the rotational angular velocity of the circular body 2 are obtained by calculation, whereby the drive control of the tracking antenna driving device can be easily performed.

[Second Embodiment] FIG. 4 is an explanatory view of a circular body of a sensor device for a tracking antenna driving device according to a second embodiment. This sensor device for a tracking antenna driving device differs from the first embodiment only in the configuration of the circular body 2, and the other components are the same as those in the first embodiment.

As shown in FIG. 4, the circular body 2 has an upper bottom surface 23 which is a plane supported by the support body 3.
Have different magnetic poles in the plane direction. Therefore, in this case, the support 3 is formed of a non-magnetic material such as a synthetic resin material, and the mounting base 32 is installed at a position where the magnetic pole of the circular body 2 does not have an influence of the attraction force.

According to the sensor device for the tracking antenna driving device described above, the circular body 2 is attracted by the terrestrial magnetism and is rotatably supported so as to be constantly directed in the same direction. The angle and the rotational angular velocity can be detected with high accuracy. In the tracking antenna driving device sensor device, for example, the openings 21 are set to be different from each other so that the relative relationship between the position of the magnetic pole and the size of the opening area depending on the rotation angle of the opening 21 is unique. By doing so, the bearing may also be detected.

[Third Embodiment] FIGS. 5A and 5B are explanatory views of a sensor device for a tracking antenna driving device according to a third embodiment, wherein FIG. 5A is a plan view and FIG. 5B is a side sectional view. . The sensor device 1 for a tracking antenna driving device differs from the first embodiment in the method of detecting the displacement of the circular body by the detecting means and the detected means, and the method of supporting the circular body. The first sensor 43 and the second sensor 43 correspond to detection means for detecting the displacement in the rotational direction by the circular body 2, the support body 3, and a striped pattern 24 of the circular body 2 which is fixed to the support body 3 and described later. 44.

The circular body 2 is a disk-shaped hollow cylindrical sealing body formed of a thin plate of, for example, a stainless steel material, and light and dark colors as detection means are alternately arranged on the surface of the upper bottom surface 23 of the cylinder. Striped pattern 24 and convex part 2 in the center
5 is provided. The stripe pattern 24 is a light reflection adjusting means,
A predetermined number of striped patterns in which light and light colors are alternately arranged are formed radially from the center of the upper bottom surface with a predetermined length and a predetermined width, and at predetermined equal intervals that can divide the circumference of the circular body 2 into integers. ing. The convex portion 25 is a support portion supported by the support 3 described later, and has a predetermined height.

The support 3 supports the circular body 2 in a rotatably floating state, and supports the circular body 2 in a floating state with a liquid fluid 36 such as water filled therein. Base 32 having a support container 35 for mounting and a mounting hole 33 for mounting the sensor device 1 for a tracking antenna driving device to which the support container 35 is fixed.
And The support container 35 is formed of a transparent material such as a synthetic resin, and has a support portion 35b that is a recess that supports the circular body 2 by being in contact with the protrusion 25 on the inner surface. It has a surface 35a.

The first sensor 43 and the second sensor 44 include, for example, a light emitter using an infrared LED element that emits infrared light and a light receiver using a photodiode element that receives infrared light and outputs a light reception signal. They are arranged facing one surface of the circular body 2 on which the stripe pattern 24 is formed. Then, two of the first sensor 43 and the second sensor 44 are arranged in the circumferential direction of the circular body 2 at a distance different from the interval at which the striped pattern 24 is formed and different from an integer multiple. This first sensor 43,
In the second sensor 44, the light from the projector is not directly detected by the light receiver, and a detection signal based on a change in the amount of reflected light due to the shading of the stripe pattern 24 is input to the control circuit of the control unit 5.

In the sensor device 1 for a tracking antenna driving device described above, the circular body 2 is supported by the support 3 in a floating state. The rotation of the moving body causes the support body 3 to move in conjunction with the rotation of the moving body, and the circular body 2 that tends to stop due to inertia.
The relative horizontal displacement between the first sensor 43 and the support 3 is defined as a time difference between switching from ON to OFF and OFF to ON based on a predetermined threshold value in a change in the amount of reflected light of the first sensor 43 and the second sensor 44. The rotation direction and the rotation angular velocity of the circular body 2 are detected and calculated by the CPU 51 of the control unit 5.

According to the sensor device 1 for a tracking antenna driving device described above, the light emitter and the light receiver of the detecting means can be disposed facing one surface of the circular body 2, so that the rotation angle can be reduced by a small installation space. And the rotational angular velocity can be detected, and can be formed in a smaller size. Also,
Since the circular body 2 is supported by a liquid fluid such as water, the frictional force between the moving object and the object to be stopped due to inertia is reduced. The rotational angular velocity can be detected, so that the device can be formed smaller and lighter.

The sensor device 1 for a tracking antenna driving device described above may be configured as shown in FIG. 6 as a different embodiment. That is, the circular body 2 has the concave portion 22 which is a support portion of the first embodiment formed in the center of the inside of the cylindrical bottom surface with the one-sided opening, and the support body 3 makes the circular body 2 rotatable. For supporting the circular body 2 in a floating state by a liquid fluid 36 such as water supported in a floating state,
A supporting container 37 having a circular opening 37a slightly larger than the outer dimension of the cylindrical portion of the circular body 2, a mounting hole 33 to which the supporting container 37 is fixed and for mounting the sensor device 1 for a tracking antenna driving device, and the concave portion 22; And a mounting base 32 on which a supporting portion 38 for supporting the circular body is formed. The circular body 2 has different magnetic poles in the plane direction of the bottom surface 23 which is a plane supported by the support body 3, so that the circular body 2 is rotatably supported so as to be attracted by the geomagnetism and continuously face the same direction. By reducing the frictional force of the supporting portion, the rotation angle and the rotation angular velocity can be detected with higher accuracy. Also, the orientation can be detected by setting the openings 21 to be different from each other so that the relative relationship between the position of the magnetic pole and the size of the opening area according to the rotation angle of the openings 21 is unique.

[0032]

According to the sensor device for a tracking antenna driving device of the present invention, the detecting means detects the displacement in the rotational direction of the detected means formed at predetermined regular intervals on the circumference of the circular body, Since the rotation of the support is detected, the relative horizontal displacement between the moving object and the object to be stopped due to inertia is detected, and the rotation angle is detected with a simple configuration to drive the tracking antenna. Can control the device.

According to a second aspect of the present invention, there is provided a sensor device for a tracking antenna driving device, wherein the detecting means detects a displacement in a rotating direction of the detecting means formed at predetermined regular intervals on the circumference of the circular body, and Is detected, the relative angular displacement between the moving object and the object to be stopped by inertia can be detected with a simple configuration.

According to a third aspect of the present invention, in addition to the effects of the first or second aspect, in addition to the effect of the first or second aspect, the light transmitted through the opening of the light emitter is received by the light receiver and the displacement of the circular body is reduced. Because it will be detected,
The detecting means can be formed by inexpensive parts.

According to a fourth aspect of the present invention, in addition to the effects of the first and second aspects, the light emitter and the light receiver of the detecting means are disposed so as to face one surface of the circular body. Therefore, the displacement of the circular body can be detected with a small installation space, and it can be formed in a smaller size.

According to a fifth aspect of the present invention, in addition to the effects of the third or fourth aspect, the distance of the light projector, which is different from the interval at which the detected means is formed and which is different from the integral multiple, is also provided. Thus, the displacement signal of the circular body is output from the two detecting means arranged in the circumferential direction of the circular body, so that the rotation direction and the rotational angular velocity of the circular body are obtained by calculation, The driving control of the tracking antenna driving device can be easily performed.

In addition to the effects of the first to fifth aspects, the sensor device for the tracking antenna driving device according to the sixth aspect is rotatable so that the circular body is attracted by the geomagnetism and continuously faces in the same direction. Since it is supported, the rotation angle and the rotation angular velocity can be detected with high accuracy even when the moving body is gently rotated.

Further, in the sensor device for a tracking antenna driving device according to the seventh aspect, in addition to the effects of the first to fifth aspects, since the circular body is supported by the liquid fluid, it tends to stop by inertia. Since the frictional force between the moving object and the moving object is reduced, the rotation angle and the rotation angular velocity can be detected even by the small and lightweight circular body 2, so that the circular body 2 can be formed smaller and lighter.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a sensor device for a tracking antenna driving device according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the sensor device for a tracking antenna driving device shown in FIG. 1;

FIG. 3 is a block diagram showing a control circuit of the sensor device for a tracking antenna driving device shown in FIG. 1;

FIG. 4 is an explanatory diagram of a circular body of a sensor device for a tracking antenna driving device according to a second embodiment.

5A and 5B are explanatory diagrams of a sensor device for a tracking antenna driving device according to a third embodiment, wherein FIG. 5A is a plan view and FIG. 5B is a side sectional view.

FIG. 6 is a side sectional view of a sensor device for a tracking antenna driving device according to a third embodiment.

FIG. 7 is an explanatory diagram of a tracking antenna device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sensor device for tracking antenna drive devices 2 Circular body 21 Opening 24 Striped pattern 3 Support 41, 42, 43, 44 Detection means

Claims (7)

[Claims] A sensor device for a tracking antenna driving device mounted on a mobile object such as an automobile and receiving a communication radio wave from an artificial satellite station, the sensor device being used for a tracking antenna driving device. A circular body having detection means formed at equal intervals, a support rotatably supporting the circular body, and a rotational displacement of the circular body fixed to the support by the detection means. A sensor device for a tracking antenna driving device comprising: 2. A sensor device for a tracking antenna driving device which is mounted on a mobile body such as an automobile and receives a communication radio wave from an artificial satellite station and is used for a tracking antenna driving device. A circular body having detection means formed at equal intervals, a support rotatably supporting the circular body, and a rotational displacement of the circular body fixed to the support by the detection means. And a detecting unit for detecting the horizontal rotation angular velocity of the moving object on which the tracking antenna is mounted, based on a detection signal from the detecting unit. 3. The detecting means has a slit-shaped opening, and the detecting means has a light emitter and a light receiver, and receives the transmitted light from the light emitter through the opening by a light receiver to detect the displacement of the circular body. The sensor device for a tracking antenna driving device according to claim 1 or 2, wherein: 4. The reflected light from the projector by the light reflection adjusting means, wherein the detected means is a light reflection adjusting means such as a stripe pattern in which light and dark colors are alternately arranged, and the detecting means has a light emitter and a light receiver. And detecting the displacement of the circular body by a change in the amount of light.
A sensor device for a tracking antenna driving device as described in the above. 5. The apparatus according to claim 3, wherein two of the detecting means are arranged in a circumferential direction of the circular body at a distance different from an interval at which the detected means is formed and different from an integer multiple. 5. The sensor device for a tracking antenna driving device according to 4. 6. The sensor device for a tracking antenna driving device according to claim 1, wherein the circular body is a magnetic body having different magnetic poles in a plane direction supported by the support. 7. The sensor device for a tracking antenna driving device according to claim 1, wherein the circular body is supported in a floating state by a liquid fluid.