1. Field of the Invention
The present invention relates to a swing door opening/closing detection system capable of detecting the opening/closing position of a swing door.
2. Description of the Related Art
Conventionally, a so-called double-leaf automatic swing door system has been known. As shown in
Here, from a viewpoint of ensuring safety, object sensors 120, 122 are attached on approach-side surfaces and swinging-side surfaces of the door main bodies 102, 104. With this structure, the rotary driving of the door main bodies 102, 104 is stopped when the object sensors 120, 122 sense a person on a path of the door main body 102 or 104 while the door main bodies 102, 104 are rotary driven so as to close or open relative to the opening part 101, whereby the contact of the door main bodies 102, 104 with a person can be prevented.
Since the aforesaid object sensors are attached to the door main bodies, sensing areas thereof change when the door main bodies are rotary driven, and an object such as a guide rail, a wall, or the like, if any in the sensing areas, is also sensed by the object sensors. Therefore, controlling the rotary driving of the door main bodies based on information from the object sensors involves a possibility of causing a malfunction of the door main bodies.
Further, in the structure of attaching the object sensors to the rotary-driven door main bodies, electrical wirings for power supply and signal transmission/receipt have to be connected to the object sensors. In this case, wiring covers for protecting the electrical wirings need to be attached to the door main bodies.
Therefore, considering the above-described circumstances, it is an object of the present invention to provide a swing door opening/closing detection system that is capable of preventing a malfunction of door main bodies by accurately discriminating an opening/closing position of the door main bodies and controlling the rotary driving of the door main bodies based on the discrimination result.
An exemplary embodiment of the invention includes: a door main body which is rotatably provided and which rotates to open/close relative to an opening part; a driving part rotary driving the door main body; a control part controlling the rotary driving of the door main body by the driving part; a sensing part attached to the door main body to sense a person or an object in a sensing area on a path of the door main body; a deformation part deforming according to a rotational operation of the door main body; and a discriminating part which discriminates an opening/closing position of the door main body based on a deformation amount of the deformation part to control the control part based on a result of the discrimination.
According to another aspect of the invention, the control part controls the driving part to control the rotary driving of the door main body. The door main body is controlled by the driving part to open/close relative to the opening part. Note that the sensing part is attached to the door main body, and a person or an object, if any in the sensing area on the path of the door main body, is sensed by the sensing part.
Here, when the door main body is rotary driven, the deformation part deforms according to the rotational operation of the door main body. Then, the discriminating part discriminates the opening/closing position of the door main body based on the deformation amount of the deformation part, to thereby control the control part based on the discrimination result. This configuration enables accurate discrimination (recognition) of the opening/closing position of the door main body, and the control part can accurately control the driving part and the door main body based on the discrimination result. Therefore, the malfunction of the door main body can be prevented.
Note that “the opening/closing position” in this specification includes an opened/closed position (rotation angle) of the door main body, a rotation speed, and a rotation direction (a direction for opening or closing relative to the opening part).
According to another exemplary embodiment, in the swing door opening/closing detection system discussed above, the deformation part is a wiring cover protecting an electrical wiring connected to the sensing part.
In an embodiment, since the deformation part is the wiring cover protecting the electrical wiring connected to the sensing part, the wiring cover indispensable for the electrical wiring can be used for discriminating the opening/closing position of the door main body. This can reduce not only the number of parts but also manufacturing cost, compared with a case where a separate member is used for discriminating the opening/closing position of the door main body.
According to a further aspect of the invention, in the swing door opening/closing detection system discussed above, one end of the wiring cover is attached to the door main body to be rotatable about an axis and the other end of the wiring cover is fixed to a fixed wall, and the discriminating part discriminates the opening/closing position of the door main body based on a torsional deformation amount of the wiring cover that torsionally deforms in accordance with the rotational operation of the door main body.
According to another aspect of the invention, since one end of the wiring cover is attached to the door main body to be rotatable about the axis and the other end of the wiring cover is fixed to the fixed wall, the wiring cover torsionally deforms according to the rotational operation of the door main body when the door main body is rotary driven. Then, the discriminating part discriminates the opening/closing position of the door main body based on the torsional deformation amount of the wiring cover to control the control part based on the discrimination result. This enables accurate discrimination (recognition) of the opening/closing position of the door main body, and the control part can accurately control the driving part and the door main body based on the discrimination result. Therefore, the malfunction of the door main body can be prevented.
According to a further aspect of the invention, in the swing door opening/closing detection system discussed above, the deformation part is one of an electrical wiring connected to the sensing part and a bending deformation member included in the electrical wiring, and the discriminating part discriminates the opening/closing position of the door main body based on a bending deformation amount of one of the electrical wiring and the bending deformation member that bendingly deform in accordance with the rotational operation of the door main body.
According to a further aspect of the invention, the deformation part is one of the electrical wiring connected to the sensing part and the bending deformation member included in the electrical wiring, and the discriminating part discriminates the opening/closing position of the door main body based on the bending deformation amount of one of the electrical wiring and the bending deformation member that bendingly deform in accordance with the rotational operation of the door main body, and controls the control part based on the discrimination result. This enables accurate discrimination (recognition) of the opening/closing position of the door main body, and the control part can accurately control the driving part and the door main body based on the discrimination result. Therefore, the malfunction of the door main body can be prevented.
According to a further aspect of the invention, in the swing door opening/closing detection system discussed above, the sensing part also functions as the discriminating part.
According to an aspect of the invention where the sensing part also functions as the discriminating part, it is possible to reduce the number of parts and the trouble accompanying the installation. Further, less installation space is required compared with a case where a separate member serves as the sensing part and the both units are provided in a space near the swing door, so that space saving is achieved.
Next, a swing door opening/closing detection system according to one embodiment of the present invention will be described with reference to the drawings.
As shown in
Further, as shown in
Further, as shown in
Further, an electrical wiring 46 electrically connected to the object sensor 28 passes inside the wiring cover 42 and the rotary shaft 48. The electrical wiring 46 is connected to an external power source (not shown) and the control part 24.
Near the wiring cover 42, a detecting part 44 detecting a torsional deformation amount of the wiring cover 42 is provided. The detecting part 44 is composed of a rotation-side detecting part 44A (for example, a magnet) which is attached to the rotary shaft 48 to rotate together with the rotary shaft, 48 and a fixed-side detecting part 44B (for example, a magnetic sensor) which rotatably supports the wiring cover 42 and detects the rotation angle of the rotation-side detecting part 44A. The fixed-side detecting part 44B detects the rotation angle of the rotation-side detecting part 44A (for example, the magnetic sensor detects a magnetisms change amount of the magnet), and outputs data on the rotation angle as a torsional deformation amount of the wiring cover 42 to the arithmetic part 40 of the object sensor 28.
As shown in
Incidentally, in the above description, the object sensor 28 used in this embodiment includes the signal generating circuit part 32 generating the predetermined signals. However, this structure is not restrictive, but a possible alternative structure may be such that a signal transmitting device (not shown) including a signal generating circuit part generating the aforesaid signals is disposed separately from the object sensor, and this signal transmitting device transmits the predetermined signals to the object sensor. The signal transmitting part 34 may transmit the control signal to the control part 24 based on the signals transmitted to the object sensor.
Further, this embodiment has described the example where the object sensor 28 and the activate sensor 36 are separate bodies. However, this structure is not restrictive, but a sensor in which the both sensors are integrated may be used.
Further, this embodiment has described, as an example, the structure in which the sensor part 30 and the arithmetic part 40 are mounted in the object sensor 28. However, this structure is not restrictive, but the both may be separately provided as separate independent devices.
Next, operations of the swing door detection system 10 according to this embodiment will be described.
As shown in
Note that, after the processing at Step S260 is finished, the flow returns to Step S100 again, where, similarly to the above, the rotation angle of the door main bodies 12, 14 is calculated based on the torsional deformation amount of the wiring cover 42, and the door main bodies 12, 14 are controlled to be rotary-driven based on the calculation result.
Incidentally, if both of the door main bodies 12, 14 are simultaneously controlled by the control part 24 to be rotary driven, the wiring cover 42 needs to be attached only to one of the door main bodies 12, 14, for example, to the door main body 14, and with this structure, it is possible to calculate the rotation angle of both of the door main bodies 12, 14.
As described above, according to the swing door opening/closing detection system 10 of this embodiment, the rotation angle of the door main bodies 12, 14 is calculated based on the torsional deformation amount of the wiring cover 42, so that the opening/closing position of the door main bodies 12, 14 can be accurately discriminated (recognized). As a result, the control part 24 can accurately control the motors 20, 22 and the door main bodies 12, 14 based on the discrimination result. Therefore, the malfunction of the door main bodies 12, 14 can be prevented.
In particular, the deformation part is constituted of the wiring cover 42 protecting the electrical wiring 46 connected to the object sensor 28, so that the wiring cover 42 indispensable to the electrical wiring 46 can be utilized for discriminating the opening/closing position of the door main bodies 12, 14. This can reduce not only the number of parts but also manufacturing cost, compared with a case where a separate member is used to discriminate the opening/closing position of the door main bodies 12, 14.
Further, since the object sensor 28 also functions as the arithmetic part 40 calculating the torsional deformation amount of the wiring cover 42, it is possible to reduce the number of parts of the swing door opening/closing detection system 10 and reduce the trouble accompanying its installation. Moreover, only smaller installation space is required compared with a case where a separate member is used as the arithmetic part 40 and the both are provided in a space near the swing door, so that space saving can be realized.
Incidentally, this embodiment has described as an example the structure in which the opening/closing position is discriminated by calculating the rotation angle of the door main bodies 12, 14 based on the torsional deformation amount of the wiring cover 42. However, this structure is not restrictive, but a possible alternative method is, for example, detecting a bending deformation amount of the electrical wiring 46, a metal member (not shown, a bending deformation member) provided inside the electrical wiring 46, or an optical fiber (not shown, a bending deformation member) based on an incident angle of light passing through a distortion gauge or an optical fiber to calculate the rotation angle of the door main bodies 12, 14 based on the detection result.
Another possible method is detecting by a distortion gauge or the like the bending deformation amount of the wiring cover 42 when it bendingly deforms in accordance with the rotational operation of the rotary-driven door main body 14, to calculate the rotation angle of the door main bodies 12, 14 based on the detection result.
Further, the above embodiment has described the structure in which the rotation angle of the door main bodies 12, 14 is calculated and the control part 24 controls the door main bodies 12, 14 based on the rotation angle. However, the basis of the control is not limited to the rotation angle of the door main bodies 12, 14. For example, information on a detected rotation speed, rotation direction, or the like of the door main bodies 12, 14 may be used as a basis of discriminating the opening/closing position of the door main bodies 12, 14.
According to the present invention, it is possible to accurately discriminate the opening/closing position of the door main bodies, and the rotary driving of the door main bodies is controlled based on the discrimination result, so that the malfunction of the door main bodies can be prevented.
Number | Date | Country | Kind |
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2004-308918 | Oct 2004 | JP | national |