JPH0665122U - Burglar alarm - Google Patents

Abstract

(57) [Abstract] [Purpose] To connect an intrusion detection device afterwards to the alarm control device of a theft alarm device in a short time without increasing the number of parts. In this theft alarm device, electric power is supplied to the intrusion detection device 2 via a constant voltage circuit 18 connected to a power source, and the output circuit 9 of the alarm control device 1 and the alarm drive device 3 are connected to each other. An armed signal is transmitted to the intrusion detection device 2 via the input circuit 19. The intrusion detection device 2 is connected to an existing signal line that outputs an output signal in the armed state of the alarm control device 1.
Is connected to the output circuit 9 of the alarm control device 1 via the input circuit 19 and the signal output to this output line is used as a trigger to set the operating state, thereby limiting the increase in the number of parts and performing alarm control. It becomes possible to easily connect the intrusion detection device 2 to the device 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

[0002]

[Prior art]

 For example, as disclosed in Japanese Patent Laid-Open No. 3-61149, there is a known anti-theft device in which an alarm device is activated when an opening / closing part in an armed state is illegally released. In this anti-theft device, a switch for detecting the opening and closing of the door, an alarm device, and an armed state in which an alarm signal for activating the alarm device when receiving the output of the switch is generated or a disarmed state in which the alarm signal is not generated, It has an alarm control circuit that can be switched to an alarm state that activates the alarm device, and an indicator that blinks due to the output of the alarm control circuit in the armed state.

On the other hand, an alarm control circuit for an automobile is known as disclosed in, for example, US Pat. No. 3,781,854. The alarm control circuit for a vehicle switches from the disarmed state to the armed state when the door is locked by closing all the open / closed parts of the vehicle and operating the cylinder lock. If the opening / closing part of the door, trunk, or hood is illegally opened in the armed state, an alarm is automatically generated to prevent the vehicle from being stolen.

Further, for example, as disclosed in Japanese Patent Laid-Open No. 62-98280, a device for detecting a moving object using ultrasonic waves is known. A moving object detection device using ultrasonic waves includes an ultrasonic wave transmission circuit, a reception circuit that receives the sound waves that are transmitted from the ultrasonic wave transmission circuit and reflected on the surface of the moving object, and a detection circuit that detects changes in the output of the reception circuit. Is equipped with.

A new anti-theft device has been proposed in which the moving object detection device is provided as one of the detection sensors of the anti-theft device. This anti-theft device requires an ultrasonic sensor device that uses ultrasonic waves in order to prevent unauthorized entry into the automobile by breaking the window glass of the automobile. This kind of ultrasonic sensor device is composed of an ultrasonic wave transmitting device for transmitting an ultrasonic wave to the outside, a transmitting drive circuit for transmitting a drive signal to the ultrasonic wave transmitting device, an ultrasonic wave transmitting device and a surface of an object. An ultrasonic receiving device that receives the ultrasonic waves reflected by and converts the received ultrasonic waves into an electric signal, and a determination circuit that determines the output of the ultrasonic receiving device.

In any case, when the conventional burglar alarm controller enters the armed state, the burglar alarm controller starts supplying power to the intrusion detection controller, and the intrusion detection controller is set to the operating state. For example, as shown in FIG. 2, a conventional theft alarm device includes an alarm control device 1, an intrusion detection device 2 connected to the alarm control device 1, and an alarm drive device driven by a drive signal from the alarm control device 1. 3 and a sensor circuit 4 including various switches which are provided in the opening and closing parts of the door, the trunk, etc. and detect the opening of these opening and closing parts to generate a detection signal to the alarm control device 1. There is.

The alarm control device 1 removes noise such as chattering or bouncing from the detection signals of the alarm control circuit 6 and the sensor circuit 4 which are supplied with power via a constant voltage circuit 5 connected to a power source, and outputs an output. The alarm control circuit 6 is provided with an input circuit 7, a memory circuit 8 for storing an operation program of the alarm control circuit 6, and an output circuit 9 for controlling the output of the alarm control circuit 6. The input circuit 7 is supplied with power when the switch 10 provided between the input circuit 7 and the power supply is turned on.

The intrusion detection device 2 includes an input circuit 11 that receives the output of the output circuit 9 in the armed state, a sound wave control circuit 12 that is activated when the output of the input circuit 11 is received, and a sound wave control circuit 12. An ultrasonic wave transmission circuit 13 that generates a sound wave from the transmitter 14 by an output, and an ultrasonic wave reception circuit 16 that receives the output of a receiver 15 that receives the sound wave emitted from the transmitter 14 after it is reflected by an object, the transmitter 14 and the receiver A detection circuit 17 that receives the output of the sound wave control circuit 12 that detects the detection signal from the output of the ultrasonic wave reception circuit 16 when an object enters the room in which 15 is provided. The detection signal of the detection circuit 17 is sent to the input circuit 7 in the same manner as the detection device composed of various switches.

The output circuit 9 is connected to a warning sound generating circuit 20 such as a horn, a warning light 21 such as a main lamp, and an engine control circuit 23. The engine control circuit 23 includes one of various circuits that control the operation of the engine, such as a starter motor control circuit, a fuel supply control circuit, and a rotation speed control circuit.

In the above configuration, when the alarm control circuit 6 is switched from the disarmed state to the armed state, an output is sent from the output circuit 9 to the input circuit 11 and the sound wave control circuit 12 is energized. As a result, the ultrasonic wave transmission circuit 13 is activated, and ultrasonic waves are transmitted from the transmitter 14. When an intruder exists in the room, the receiver 15 receives an ultrasonic wave with a changed time from transmission to reception. As a result, the presence of an intruder is detected, the detection circuit 17 sends a detection signal to the input circuit 7, and the output of the input circuit 7 causes the alarm control circuit 6 to output an alarm sound generation circuit 20 and an alarm for a fixed time through the output circuit. The lamp 21 and the engine control circuit 23 are activated to stop the operation of the engine.

[0011]

[Problems to be solved by the device]

 By the way, in the conventional theft alarm device shown in FIG. 2, when the alarm control circuit 6 is in the armed state, a voltage of 12 V is supplied from the output circuit 9 to the input circuit 11, and in the intrusion detection device 2, the input circuit 11 is supplied. After the voltage is reduced to 5 V and supplied to the sound wave control circuit 12, the sound wave control circuit 12 is set to the operating state.

Therefore, when the intrusion detection device 2 is connected (retrofitted) to the alarm control device 1, a dedicated output terminal is secured in the output circuit 9 of the alarm control device 1 and a dedicated power supply component is provided in the output circuit 9. It is necessary to make a large change to the operation program as well as to provide it, and there is a disadvantage that the change work takes time.

Further, the input circuit 11 of the intrusion detection device 2 needs to be provided with a regulator or the like for stepping down 12 volts to a voltage of 5 volts, which is costly.

Therefore, an object of the present invention is to provide a theft alarm device that can be connected in a short time without increasing the number of parts when the intrusion detection device 2 is post-connected to the alarm control device 1.

[0015]

[Means for achieving the object]

 A theft alarm device according to the present invention comprises an alarm control device that is switched between an operable armed state and an inoperable disarmed state and that generates a drive signal when a detection signal is received in the armed state, The alarm control device is equipped with sensor circuits including various switches that are provided in the opening and closing parts of doors, trunks, etc., and that detect the opening of these opening and closing parts by tampering and generate a detection signal to the alarm control device. An engine control circuit that disables the engine when in the armed state, and an additional detection signal to the alarm control unit that is connected to the alarm control unit and detects the intrusion of an object when the alarm control unit is in the armed state And an intrusion detection device for transmitting the. In this theft alarm device, power is supplied to the intrusion detection device via a constant voltage circuit connected to the power supply, and the connection between the output circuit of the engine control circuit and the alarm drive device is input via the input circuit of the intrusion detection device. And sends an armed signal to the intrusion detection device.

[0016]

[Action]

 The existing signal line that outputs an output signal in the armed state of the alarm control device is connected to the output circuit of the alarm control device via the input circuit of the intrusion detection device, and the signal output to this output line is used as a trigger pulse. By setting the operation state, it is possible to limit the increase in the number of parts and easily connect the intrusion detection device to the alarm control device.

[0017]

【Example】

 An embodiment of the theft alarm device according to the present invention will be described below with reference to FIG. In FIG. 1, the same parts as those shown in FIG. 2 are designated by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 2, in the theft alarm device, power is supplied to the sound wave control circuit 12 of the intrusion detection device 2 and other necessary circuits via the constant voltage circuit 18 connected to the power supply V. At the same time, an armed signal is transmitted from the connection between the output circuit 9 of the alarm control device 1 and the engine control circuit 23 of the alarm drive device 3 to the intrusion detection device 2 via the input circuit 19.

In the above configuration, since the intrusion detection device 2 is set to the operating state based on the armed signal transmitted from the output circuit 9 of the alarm control device 1 to the input circuit 19 of the intrusion detection device 2, the input circuit 19 A 5 volt armed signal is transmitted to. Therefore, it is not necessary to step down the input to the input circuit 19 in the input circuit 19. Further, the constant voltage circuit 18 can use the same circuit as the constant voltage circuit 5. It is possible to connect the output circuit 9 and the input circuit 19 by using the terminal for connecting the output circuit 9 and the engine control circuit 23. Therefore, in the theft alarm device of the present embodiment, it is possible to limit the increase in the number of parts and easily connect the intrusion detection device 2 to the alarm control device 1.

The embodiment of the present invention is not limited to the above-mentioned embodiment, but can be modified. For example, instead of using a sensor that uses ultrasonic waves as the intrusion detection device, another sensor such as an infrared sensor, a vibration sensor, or a destruction detection sensor may be used.

[0021]

[Effect of device]

 As described above, according to this invention, the intrusion detection device is set to the operating state by the signal output to the output line to the engine control circuit, and therefore it is necessary to install the parts dedicated to the power supply and change the operation program. Since the number of parts is limited and the connection work can be performed easily, the device can be manufactured at low cost.

[Brief description of drawings]

FIG. 1 is a circuit diagram of a theft alarm device according to the present invention.

FIG. 2 is a circuit diagram of a conventional theft alarm device.

[Explanation of symbols]

1 ... Alarm control device, 2 ... Intrusion detection device, 3 ... Alarm drive device, 4 ... Sensor circuit, 6 ... Alarm control circuit, 7
..Input circuits, 9 ... Output circuits, 11 ... Input circuits, 1
2 ... Sonic wave control circuit, 13 ... Ultrasonic wave sending circuit, 14 ...
・ Transmitter, 15 ・ ・ Receiver, 16 ・ ・ Ultrasonic wave receiving circuit, 18 ・ ・ Constant voltage circuit, 19 ・ ・ Input circuit, 23
..Engine control circuits,

Claims (1)

[Scope of utility model registration request] 1. An alarm control device for switching between an operable armed state and an inoperable disarmed state and generating a drive signal when a detection signal is received in the armed state, a door and a trunk. Sensor circuits including various switches that are provided in the opening and closing parts such as, and that detect opening of these opening and closing parts by tampering and generate detection signals to the alarm control device, and the alarm control device in the armed state. An engine control circuit that sometimes disables the engine and an intrusion detection that is connected to the alarm control device and detects an intrusion of an object and sends an additional detection signal to the alarm control device when the alarm control device is in the armed state And a power supply to the intrusion detection device via a constant voltage circuit connected to a power supply, and an output circuit of the alarm control device. A burglar alarm device, characterized in that an armed signal is transmitted to the intrusion detection device from a connection portion between the engine control circuit and the engine control circuit via an input circuit of the intrusion detection device.