JP2005117124A - Door unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door unit the operating unit of which is installed to a door utilizing a wireless tag. <P>SOLUTION: The door unit mainly comprises: the operating unit S fitted to the door D of a building C; a detection antenna 11 provided to the part of building body E; and a detector 10, and the operating unit S is provided with: the wireless tag T including an IC chip 1, a tag antenna 2, and a switch 3 integrated in series with the tag antenna 2; and an operating button 4. The detector 10 always transmits an interrogation signal through the detection antenna 11. No response signal comes from the wireless tag T in an initial state. When the operating button 4 is depressed, the switch 3 is activated to close the circuit of the tag antenna 2. Thus, the wireless tag T utilizes a radio wave signal transmitted from the detector 10 to return the response signal. As a result, the detector 10 detects the response signal to output a detection signal and drives a call ring 30 on the basis of the detection signal to inform a resident in a house about the arrival of a visitor. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a door device in which an operation unit such as a doorbell can be attached very easily by using a wireless tag.

Patent Document 1 describes an interphone device including a door phone and an interphone master. When installing this type of interphone device, it is common to place the doorphone at the entrance, place the interphone main unit at a suitable place in the room, and wire-connect them.
JP 2001-45157 A

  In the conventional interphone apparatus, the doorphone is usually installed around the door provided at the doorway, and the doorphone is rarely arranged on the door itself. This is because the doorphone and the interphone master unit need to be directly connected by wiring, and if the doorphone is attached to a door that is frequently opened and closed, wiring work becomes extremely complicated and difficult. Even when a door phone is attached near the door, wiring work is still necessary.

  An object of the present invention is to provide a door device in which an operation unit such as a doorbell can be attached to the door itself, and wiring work for the operation unit can be eliminated even when a door phone is attached in the vicinity of the door. A feature of the door device adopted by the present invention is that an operation unit configured using a wireless tag having a function of returning a response signal based on a radio wave signal transmitted from a detection device having a radio wave transmission / reception function is a door. Alternatively, a predetermined device is provided based on a detection signal provided near the door, provided with a switch for enabling or disabling the signal transmission function of the wireless tag, and detecting the presence or absence of a response signal from the wireless tag. Is set to operate.

  Here, the wireless tag generates power using radio waves transmitted from, for example, a detection device, modulates received radio waves based on information stored in the storage unit, and generates and transmits response radio signals. . The switch operates to enable or disable the signal transmission function of the wireless tag by pressing an operation button or the like installed in the door itself or in the vicinity of the door, for example, a limit switch, a reed switch, a micro switch, etc. A switch, a piezoelectric switch, a membrane switch, a pressurized conductive rubber switch, and the like can be cited. A configuration in which these are incorporated in series with the antenna of the wireless tag is conceivable. A so-called wireless tag reader can be used as the detection device, which transmits a question signal to the wireless tag and outputs a detection signal when receiving a response signal from the wireless tag. Note that examples of the predetermined device that operates based on the detection signal output from the detection device include a lighting device such as a doorbell, an entrance light and a room light, and a television camera for monitoring a visitor.

  The door device according to the present invention operates as follows, for example. A detection antenna connected to the detection device is disposed in the door frame or in the vicinity of the door, and a radio wave is constantly transmitted from the detection device so that a radio signal can be transmitted to and received from the wireless tag at any time. In addition, the switch activates the signal transmission function of the wireless tag during operation. When a switch is operated by pressing an operation button or the like provided in the door or in the vicinity of the door and the signal transmission function of the wireless tag is validated, a response signal is transmitted from the wireless tag. When the detection device detects this, a detection signal is output, and a device such as a doorbell is operated. As described above, the door device according to the present invention can use the wireless tag to connect the operation unit and a predetermined device arranged in a desired place such as a room without using wiring. It can be provided not only in the vicinity but also in the door itself. Moreover, the operation unit is not only required to be connected to the wiring, but also can be installed at an arbitrary position on the door within a range where communication with the detection antenna is possible. Also, when the operation unit is installed on the wall surface near the door, the wiring work is not required, so that the installation work becomes very simple.

  In the door device, when the switch is operated, the wireless tag signal transmission function can be set to be invalidated. In this case, a response signal is transmitted from the wireless tag in normal times, and the response signal is interrupted by invalidating the signal transmission function of the wireless tag during the switch operation. The detection device may be set to output a detection signal by detecting this signal interruption and to operate a predetermined device.

  By the way, it is also conceivable that the switch of the wireless tag constituting the operation unit has a structure for opening and closing the contact point by an operation with a key. Such a configuration can be used, for example, as an opening / closing means for an electronic lock of a door.

  In the door device according to the present invention, since the operation unit is configured using a wireless tag including a switch that enables or disables the signal transmission function, wiring connection of the operation unit becomes unnecessary. Therefore, it is possible to arrange the operation unit at a desired position of the door, which has been difficult in the past, and the installation work becomes extremely simple. Even when the operation unit is provided in the vicinity of the door, the ease of installation is greatly improved by eliminating the need for wiring connection. Since the wireless tag does not require a built-in battery, maintenance such as battery remaining amount management and battery replacement in the operation unit can be omitted. Therefore, it is easy to embed the operation unit in a door or wall.

  When the switch of the wireless tag that constitutes the operation unit is configured to open and close the contact by operation with a key, a lock structure that is advantageous in terms of crime prevention can be provided.

[First Embodiment]
An embodiment in which a door device according to the present invention is applied to a doorbell will be described. As shown in FIG. 1 (A), the door device of this example includes an operation unit S attached to a door D provided in a building C, and a detection antenna 11 disposed in a housing E part around the door D such as a door frame. The detection device 10 to which the detection antenna 11 is connected is a main component. In addition, as shown in FIG. 1B, the operation unit S includes an IC chip 1, a tag antenna 2, and a wireless tag T including a switch 3 incorporated in series in the tag antenna 2 and an operation for operating the switch 3. It consists of buttons 4. Note that the tag antenna 2 and the detection antenna 11 can adopt a surface loop shape wound in a coil shape on a substrate in order to increase the reception efficiency of radio waves. In addition, the form of the antenna does not prevent the antenna from being changed based on the frequency or intensity of the radio wave used for communication. For example, a bar, patch (element), composite patch, surface, slot, or spiral -It can be adopted as appropriate according to the situation, such as a pattern.

  The switch 3 incorporated in series with the tag antenna 2 maintains the antenna 2 OFF (circuit opened) in the initial state, and turns on the antenna 2 in conjunction with the operation of the operation button 4 (circuit closed). To work. Examples of such switches include limit switches, reed switches, micro switches, piezoelectric switches, membrane switches, and pressurized conductive rubber switches.

  As shown in FIG. 2, the detection device 10 communicates with the wireless tag T at any time, operates the operation button 4 to operate the switch 3, and is transmitted from the wireless tag T when the antenna 2 is turned on. When a response signal is detected, a detection signal is output. The detection signal output from the detection device 10 may be configured to be directly input to the mechanism portion of the doorbell 30, but the control device 20 may be disposed therebetween. Further, transmission of a detection signal from the detection device 10 to the control device 20 and / or transmission of a control signal from the control device 20 to the doorbell 30 is performed by a wired method using electric wiring, or by a wireless method using radio waves and light. Embodiments are possible.

  Although various forms of the structure of the wireless tag T are possible, in this example, an IC chip as shown in FIG. 3 is adopted. As shown in the drawing, the internal structure of the IC chip includes a receiving unit and a transmitting unit that are connected to an antenna via a wireless communication interface, a power generation unit that generates power by the received radio wave, an MPU that controls demodulation / modulation of the radio wave, etc. And a storage unit including a non-volatile memory for holding identification information of the wireless tag and other information. However, the wireless communication interface / reception unit / transmission unit may be configured integrally. In addition, the storage unit may be constituted by a read-only memory. However, if rewriting is possible if desired, it is desirable to provide an external communication interface (not shown) in the IC chip for updating or changing the stored information. .

  The operation of the door device S will be described as follows. Note that the switch 3 maintains the antenna OFF in the initial state, and turns on the antenna when operated by operating the operation button 4. A question signal is always transmitted from the detection antenna 11 disposed around the door D toward the tag antenna 2 of the wireless tag T. In the initial state, the antenna is OFF and there is no response signal from the wireless tag T. When a visitor or the like presses the operation button 4 provided on the door D, the switch 3 operates in conjunction with the operation button 4 to turn on the antenna of the tag antenna 2. As a result, the radio tag T receives the radio wave signal transmitted from the detection device 10 by the tag antenna 2 and generates power for operation at the power generation unit using the energy of the received radio wave. A response signal obtained by modulating the received radio wave based on the stored information is returned to the detection device 10. As a result, the detection device 10 detects the response signal and outputs a detection signal, and the doorbell 30 can be driven based on the detection signal to inform the indoor occupants of the arrival of the visitor.

  By the way, the door device S is set to turn on the antenna by the switch operation. On the other hand, in the initial state, the antenna is kept on, and the antenna is turned off by the switch operation. It is also possible to configure the response signal to be interrupted. In this case, the detection apparatus 10 detects the interruption of the response signal and outputs a detection signal. Further, the detection antenna 11 is not hindered from being arranged behind the ceiling or under the floor as necessary.

[Second Embodiment]
As shown in FIG. 4, it is also conceivable that a plurality of sets of the IC chip 1 and the switch 3 are arranged in one operation unit S so that a plurality of devices can be operated by one operation unit S. In this embodiment, by connecting a plurality of sets of the IC chip 1 and the switch 3 to one tag antenna 2 in parallel, in addition to the doorbell 30, the lighting device 31 such as an entrance light and an interior light, and a visitor are confirmed. The television camera 32 for performing the operation can be operated by the operation unit S provided on the door D.

  In the case of this example, a multi-access mode in which different identification information is held in each of a plurality of IC chips 1 and an anti-collision function is used so that one detection device 10 can communicate with a plurality of IC chips 1 simultaneously. adopt. Thereby, even if several response signals are transmitted simultaneously, they can be distinguished.

[Third Embodiment]
FIG. 5 shows a configuration in which the switch 3 provided in the operation unit S has a structure like a cylinder lock, and the ON / OFF of the antenna 2 is controlled by an unlocking / locking operation using a key or the like. In this example, the switch 3 is provided with fixed contacts 3a and 3a and a rotating conducting portion 3b, and the antenna is turned on when the conducting portion 3b is rotated to a position where it contacts the contacts 3a and 3a by a key. I did it. Further, a rod 40 that is driven forward and backward by a solenoid and a keyhole 41 are provided between the door D and the housing E, and the forward and backward movement of the rod 40 is controlled based on a detection signal output from the detection device 10. did.

  This example is provided between the door D and the housing E by turning the antenna 2 on or off by operating the switch 3 of the operation unit S arranged at a desired position of the door D using a key. Since the solenoid rod 40 is controlled to advance and retreat, the lock device in which the key operation unit (switch 3) and the main body units 40 and 41 are separated can be provided. Such a configuration is considered extremely advantageous in terms of security measures.

  The present invention can be applied not only to detached houses but also to various buildings such as apartment houses such as apartments and condominiums, hotels, offices, factories, department stores, supermarkets, public facilities such as government offices, libraries, and museums. When these doors have a large number of doors D, each door D is provided with a door device of the present invention, and a detection antenna 11 consisting of a single antenna wire is arranged on the housing wall, so that one detection device is provided. By using the management computer 10 and the management computer, it becomes possible to manage the equipment of the entire building.

  A tag antenna can be embedded in a door to which the door device of the present invention is applied. Thereby, the freedom degree of arrangement | positioning of the wireless tag T increases markedly. On the other hand, if a member with the detection antenna 11 embedded therein is prepared in advance for the door frame on the housing side to which the door is attached, the construction work is simplified.

  Furthermore, depending on the situation, the operation unit of the door device of the present invention can be installed in the vicinity of the door. Even in such a case, wiring to the operation unit is unnecessary, so the arrangement of the operation unit can be freely set Has the advantage.

FIG. 1A is a perspective view illustrating a building to which a door device is applied, and FIG. 1B is a front view illustrating a schematic configuration of an operation unit according to the first embodiment of the present invention. It is drawing which shows schematic structure of the door apparatus which concerns on this invention. It is a block diagram which shows roughly the internal structure of the radio | wireless tag (IC chip) used for the door apparatus which concerns on this invention. It is a block diagram which concerns on the 2nd Embodiment of this invention and shows schematic structure of an operation part. FIG. 9 is a diagram illustrating a schematic configuration of an operation unit according to a third embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS S ... Operation part C ... Building D ... Door E ... Housing T ... Wireless tag 1 ... IC chip 2 ... Tag antenna 3 ... Switch 4 ... Operation button 10 ... Detection apparatus 11 ... Detection antenna

Claims (2)

An operation unit configured using a wireless tag having a function of returning a response signal based on a radio wave signal transmitted from a detection device having a radio wave transmission / reception function is provided in or near the door, and the wireless tag has a signal transmission function A switch for enabling or disabling is provided, and the detection device is set to operate a predetermined device based on a detection signal output by detecting the presence or absence of a response signal from the wireless tag. Door device. The door device according to claim 1, wherein the switch provided in the wireless tag configuring the operation unit is configured to open and close the contact by an operation with a key.