JPH05298564A - Alarm unit for detecting door opening - Google Patents

Abstract

PURPOSE:To provide the subject alarm unit capable of facilitating the execution of attachment and simply changing a door whose opening have to detect. CONSTITUTION:This alarm unit is used by being attached at the wall face part in the vicinity of a door where a magnet 6 for door opening detection is attached. The alarm unit is provided with a lead switch 3 switching-operating on/off by contact/separation with/from the magnet 6 by the opening/closing of the door and an information means informing of that the door is opened when the lead switch 3 switching-operates by the opening/closing the door.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door opening detection alarm unit applied for detecting and notifying the opening of a door of a house or the like.

[0002]

2. Description of the Related Art As a conventional alarm unit, various sensors for detecting an abnormality such as a fire occurrence or a gas leak are externally attached, and when an abnormality detection signal is received from each of these sensors, a predetermined notification is given. Is proposed. Then, conventionally, for example, as a crime prevention means for detecting an unwarranted opening of a door during absence and issuing an alarm, similar to the detection of a fire or gas leak, a door opening is detected at a predetermined door position. Therefore, a predetermined notification is performed by mounting a sensor device for the purpose and receiving a detection signal indicating that the door is opened from the sensor device by the alarm unit. That is, conventionally, as shown in FIG. 5, a door opening detection magnet 6 is attached to a desired door Da whose door opening is desired to be detected, and a reed switch 3E is provided on a wall surface portion in the vicinity thereof. Three
By wiring E and alarm unit B,
The alarm unit B was used to notify the opening of the door Da.

[0003]

However, in the above-mentioned conventional device, it is necessary to mount not only the magnet 6 but also the reed switch 3E at the position of the door, so that the number of parts is large and the reed switch 3E is an alarm. Since it is necessary to connect the wiring to the unit B, the labor of the wiring work is troublesome, and the workability of the installation work is difficult.
Further, in the past, even when the door whose opening is desired to be detected is not constant and, for example, it is desired to detect the opening of the door at a different place instead of the door Da, the reed switch 3E or the like is still used. Due to the complexity of the installation work of the equipment, the restriction of the wiring work, and the like, the door for which the opening is to be detected cannot be easily changed, and the flexibility is poor, which is also inconvenient.

The present invention has been proposed in view of the above points, and it is an object of the present invention to provide a door opening detection alarm unit which can be easily installed and installed and which can easily change the door for detecting the opening. , Its purpose is.

[0005]

An alarm unit for door opening detection according to the present invention, which is proposed to achieve the above object, is provided in the vicinity of a door to which a magnet for door opening detection is attached. An alarm unit for door opening detection that is mounted on a wall surface and uses a reed switch that performs on / off switching operation by contact and separation with a magnet when the door is opened / closed, and this reed switch performs switching by door opening. And a notification means for notifying that the door is opened when the operation is performed.

According to a second aspect of the present invention, there is provided an alarm unit for door opening detection, comprising:
The configuration includes a warning mode setting switch for setting the alarm unit to the warning mode, and a canceling switch for canceling the warning mode by a switch operation of a predetermined secret code set in advance.

According to a third aspect of the present invention, there is provided the alarm unit for door opening detection according to the second aspect of the present invention.
When the above warning mode setting switch is operated,
After a lapse of a certain time from the operation, the mode is switched to the warning mode, and the time from the switching operation of the reed switch to the activation of the notification means is delayed by a predetermined fixed time, and the release When the warning mode is released by operating the switch, the notification means is not activated.

[0008]

In the door opening detection alarm unit according to the present invention having the above structure, the alarm unit according to the present invention is provided on the wall surface near the door on which the door opening detection magnet is attached. When the door is opened, the reed switch provided in the alarm unit performs a predetermined switching operation in response to the contact / separation action with the magnet, and the notification means performs a predetermined notification. Become. That is, the magnet can be attached to the door and the alarm unit according to the present invention can be attached in the vicinity of the door to detect the opening of the door to give a notification, and the reed switch can be attached separately corresponding to the magnet. It is not necessary to wire the reed switch and the alarm unit.

Further, in the door opening detection alarm unit according to the present invention as defined in claim 2, the alarm unit can be set to the alarm mode by operating the alarm mode setting switch, and the door in the alarm mode can be set. The notification of opening can be different from the notification at normal times. Moreover, since it is necessary to release the warning mode by operating the switch of a predetermined secret code, it is difficult for an outsider who does not know the secret code to cancel the caution mode and open the door. Become. Therefore, it is possible to exert a sufficient crime prevention function in this alert mode.

In the door open detection alarm unit according to the third aspect of the present invention, even if the door is opened and the user goes out after operating the switch for setting the warning mode, the door is opened for a predetermined constant time. If it is inside, the notification means does not operate. Also, even if you go home afterwards and open the door,
If the warning mode is canceled by a predetermined operation within a certain delay time from the time when the door is opened, the notification means also does not operate. Therefore,
Even when the alarm unit is installed inside the room,
The user can enter or leave the room without generating unnecessary alarms. On the other hand, in the alert mode, although the operation of the notification means is delayed for a fixed time,
Unless the security code is released within a certain period of time after the door has been unfairly opened in the security mode, the alarm function will operate, so the security function will not be impaired and sufficient security will be provided. Function is obtained.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a block diagram showing an example of a hardware configuration of an alarm unit A for door opening detection according to the present invention, FIG.
FIG. 3 is a front view showing an example of the appearance of the alarm unit A. The alarm unit A shown in FIGS. 1 and 2 has a small housing case 1 in which a reed switch 3 driven by a battery 2 such as a lithium battery, a signal processing unit 4, and other electric circuit components described later are incorporated. Further, the key operation section 5 and the light emitting LED 7 are provided on the front operation panel. Here, the reed switch 3 is
The switching operation of turning on and off is performed based on the rotating operation of the rotary magnet 3a that is rotated by the contact and separation with the door opening detection magnet 6 attached to the door. The state close to the magnet 6 (door closed state) When the magnet 6 separates from the door (door open state), the signal processing unit 4 detects this. The reed switch 3 is provided in a state of being biased to one side surface inside the housing case 1 so that the reed switch 3 can be arranged as close to the magnet 6 as possible.

The signal processing unit 4 is composed of a CPU or the like. The signal processing unit 4 includes a key operation unit 5 and a light emitting LE.
In addition to D7, a storage unit 8 as a system memory including a ROM and a RAM, a timer circuit 9, a sound signal generation circuit 10 and a speaker as an example of a notification means according to the present invention for sounding a chime and an alarm for alarm. SP, etc. are connected. Among them, the key operation unit 5 includes a warning mode setting switch 5a for setting a warning mode different from the normal notification mode, and four alphabets A to D for inputting a secret code, for example. A type of operation key 5b is provided. This operation key 5b
Corresponds to the release switch according to the present invention.

In the normal mode state in which the warning mode is not set, the signal processing unit 4 receives the predetermined signal from the reed switch 3 due to opening of the door, and then the speaker S.
Sound signal generating circuit 10 for outputting a chime sound from P
Is configured to control. On the other hand, when the warning mode is set by the key operation of the warning mode setting switch 5a, the signal processing unit 4 performs the following control. That is, even if the warning mode setting switch 5a is operated, the warning mode is not immediately switched to,
The blinking of the light-emitting LED 7 is started by such an operation, and at the same time, the timer circuit 9 is activated, and when the preset fixed time (for example, 30 seconds) has elapsed, the mode is switched to the warning mode. At the same time, the blinking of the light emitting LED 7 is terminated and the timer circuit 9 is reset. Before switching to the warning mode, the reed switch 3
The alarm does not sound when a predetermined signal is received from.

After the shift to the warning mode, when a predetermined signal is transmitted from the reed switch 3 due to opening of the door, the alarm is not activated immediately but the blinking of the light emitting LED 7 is started at the same time as the timer. When the circuit 9 is activated and a preset predetermined delay time (for example, 30 seconds) elapses, the sound signal generation circuit 1
By operating 0, an alarm sound different from the normal chime is controlled to be output from the speaker SP. However,
The signal processing unit 4 does not sound the alarm when a preset secret code is input by operating the operation key 5b within the predetermined delay time from the reception of the predetermined signal from the reed switch 3. Control not to be done.
The secret code is configured to be registered in the RAM of the storage unit 8 by mounting the battery 2 on the alarm unit A and then operating the operation keys 5b to input a desired combination code of A to D. There is. It should be noted that when the battery 2 is attached, the light emitting LED 7 starts to blink, but this blinking is configured to end when the input of the personal identification code is completed.

Next, a usage example of the alarm unit A,
And the operation will be described. First, when using the door D, as shown in FIG.
The door opening detection magnet 6 may be attached to the door using a screw member or the like, and the alarm unit A may be attached to the wall surface in the vicinity thereof so as to face the magnet 6. Since the alarm unit A has a small size and a light weight, it can be easily attached using, for example, a double-sided adhesive tape. Further, since the alarm unit A has the reed switch 3 built therein, no special wiring connection is required, and since the built-in battery 2 operates the signal processing unit 4 and other parts, it can be connected to an external power source. No wiring connection is required. Therefore, the mounting position of the alarm unit A is not restricted by the restrictions of various wirings.

Next, at the time of use, the battery 2 may be attached to the alarm unit A, and a desired personal identification code may be registered in the RAM in advance by operating the operation keys 5b.
When the warning mode is not set as it is, the normal mode is set. In such a normal mode state, when the door D is opened and the reed switch 3 performs a predetermined switching operation, a chime with a relatively low volume sounds, thereby confirming the open / closed state of the door D. Is.

On the other hand, the warning mode setting switch 5
Operate a and set the alarm mode to the door D
When is released, a loud alarm sounding different from the above chime sounds and the crime prevention function is exerted. Thus, the warning mode is not set immediately even if the warning mode setting switch 5a is operated, and the warning mode is switched to the warning mode after the preset time elapses by the timer circuit 9. Warning mode setting switch 5
If a is operated in the room in which the alarm unit A is installed and then the door D is opened to quickly go out, the alarm for alarm does not sound. Also, in the alert mode, door D
The alarm does not sound immediately even if the door D is opened, and the warning mode can be released by entering the secret code with the operation key 5b within a predetermined time after the door D is opened. If you enter the PIN code after opening the room and entering the room, the alarm for the alarm will not sound and no trouble will occur.

On the other hand, an outsider who does not know the personal identification code is the door D
When the room is opened and the room is entered, the warning mode cannot be released, and therefore an alarm for alarm sounds after a lapse of a predetermined time. Since such an alarm sound is loud, it gives a warning to an outsider who has entered illegally and informs a neighboring person of an abnormal situation, thereby exerting an appropriate crime prevention function. Steps 100 to 113 of the flowchart of FIG.
Shows an example of the above series of operation procedures.

The alarm unit A has been used for informing or alarming when a specific door D is opened. However, due to various circumstances, the alarm unit A is used for opening a door attached to a different place. You may want to change and use it for notification. In such a case, after attaching the magnet 6 to the new door, the alarm unit A may be attached in the vicinity thereof, whereby the same use as described above can be performed. Since no special wiring connection is required, the installation location is not unduly restricted for those reasons, and it is possible to change or add a door for alarming by the alarm unit A easily and flexibly. It is possible. Note that the door in the present invention is not limited to the entrance door of a house, but is a concept including other types of doors such as shutter doors and window doors that open and close.

[0020]

As can be understood from the above description, according to the door opening detection alarm unit of the present invention as defined in claims 1 to 3, the present invention can be applied to the wall surface portion near the door to which the magnet is attached. Just by mounting the alarm unit, the opening of the door can be detected and the desired notification can be performed. There is no need to install a reed switch separately and wire-connect it with the alarm unit as in the past. Therefore, it is possible to obtain an effect that the installation work is much easier. In particular, in the present invention, since the installation location of the alarm unit and the magnet is not restricted by the convenience of wiring work, etc., it is possible to arbitrarily and easily and promptly change the location where the door opening is detected, and it is possible to change the location. It is very convenient because it can be used to notify the opening of the door of the place.

Further, according to the present invention as set forth in claims 2 and 3, it is possible to issue a door opening notification in a warning mode different from a normal time notification, that is, an alarm for an illegal door opening, Further, the guard mode cannot be canceled by an outsider who does not know the personal identification code, so that there is an advantage that a sufficient crime prevention function can be exerted. Further, according to the present invention as set forth in claim 3, when the user sets the alarm mode or cancels the alarm mode, it is possible to prevent an unnecessary alarm from being generated even if the user opens the door. It is convenient.

[Brief description of drawings]

FIG. 1 is a block diagram showing an example of a hardware configuration of an alarm unit for door opening detection according to the present invention.

FIG. 2 is a front view showing an example of the outer appearance of the door opening detection alarm unit according to the present invention.

FIG. 3 is an explanatory view showing an example of a usage state of the door opening detection alarm unit according to the present invention.

FIG. 4 is a flowchart showing an example of an operation procedure of the door opening detection alarm unit according to the present invention.

FIG. 5 is an explanatory diagram showing an example of a conventional alarm unit.

[Explanation of symbols]

 2 Battery 3 Reed switch 4 Signal processing unit 5 Key operation unit 5a Warning mode setting switch 5b Operation key 6 Door open detection magnet 10 Sound signal generation circuit SP speaker

Claims (3)

[Claims] 1. An alarm unit for door opening detection which is used by being attached to a wall surface near a door to which a magnet for door opening detection is attached, which is turned on when the door is opened or closed to contact with or separate from the magnet.
An alarm for door opening detection, which is equipped with a reed switch for performing an off switching operation, and a notifying means for notifying that the door is opened when the reed switch performs a switching operation by opening the door. unit. 2. The door opening detection alarm unit according to claim 1, wherein a warning mode setting switch for setting the alarm unit to a warning mode and a predetermined personal identification code for setting the warning mode in advance. An alarm unit for door opening detection, which is provided with a release switch for releasing the switch operation. 3. The door opening detection alarm unit according to claim 2, wherein when the warning mode setting switch is operated, the warning mode is switched to after a lapse of a certain time from the operation, and the reed switch is turned on. The time from the switching operation to the activation of the notification means is delayed by a predetermined fixed time, and the notification means does not operate when the warning mode is canceled by the operation of the release switch within this delay time. An alarm unit for door opening detection that is characterized by being