Patent Publication Number: US-2003227377-A1

Title: Wireless security notification and control system

Description:
PRIOR APPLICATION  
     [0001] This is a continuation-in-part of provisional application Serial No. 60/388,149 filed Jun. 10, 2002. 
    
    
     
       FIELD OF THE INVENTION  
       [0002] This invention relates to alarm and security systems, and more particularly to automotive intrusion detectors and engine disabling equipment.  
       BACKGROUND OF THE INVENTION  
       [0003] Conventional car anti-theft devices which, upon detection of an intrusion or misuse of the vehicle, momentarily sound an alarm and flash the parking lights are grossly inadequate to prevent illegal entry and theft of the vehicle.  
       [0004] The instant invention results from an attempt at improving the efficiency of vehicular anti-theft equipment by transmitting an early warning of the intrusion to the owner of the vehicle and giving that person the ability to remotely disable the operation of the car engine.  
       SUMMARY OF THE INVENTION  
       [0005] The principal and secondary objects of this invention are to provide an effective anti-theft system for vehicles which, not only transmit via telephone, a warning signal to the owner upon breaking of the car security, but also allows the owner to call the car and disable the engine.  
       [0006] These and other valuable objects are achieved by using a portable cellular telephone handset combined with the components of a conventional car alarm system to automatically dial a preset phone number upon unauthorized intrusion into the vehicle or other emergency condition, and sensing a ringing signal on the cellular phone handset, to cut off the electrical supply to the vehicle engine. In a first instance, the handset or. other type of telephone terminal is activated by the emergency condition detector and automatically calls a pre-programmed remote telephone station. 
     
    
    
     BRIEF DESCRIPTION OF THE DRAWING  
     [0007]FIG. 1 is a block diagram of a wireless vehicular security system according to the invention;  
     [0008]FIG. 2 is a wiring diagram of the cellular phone calling circuits;  
     [0009]FIG. 3 is a wiring diagram of the remote engine disabling system; and  
     [0010]FIG. 4 is a block diagram of an alternate embodiment of the remote engine-disabling system. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT OF THE INVENTION  
     [0011] Referring now to the drawing, there is illustrated a relatively simply, easy to install, and efficient car security system  1  composed of a conventional cellular handset  2  and various components  3 - 9  of a conventional car alarm system.  
     [0012] The system is divided into two parts, namely, an intrusion detection and remote calling unit  10  and a remotely or locally activated engine disabling unit  11 . Both units share the same cellular phone handset  2  such as Model V2390 sold under the MOTOROLA brand name. Upon detection of an intrusion by some conventional detector circuits  4  such as a door switch, motion detector or sound detector, a pulse generator  5  momentarily activates a relay  6 . Normally, open contact terminals of the relays are wired in parallels to the terminal of a “CALL” button on the cellular telephone handset  2 . The handset has been preprogrammed to call the phone station of the owner or a security agency. The intrusion detector is controlled by a conventional vehicular alarm circuitry  3  that can be remotely disabled by the approaching legitimate owner of the vehicle using a conventional, keyring infrared remote control unit.  
     [0013] In the remotely controlled engine-disabling unit  11 , the audio sensor  7 , upon hearing the ringing of the cellular handset  2 , activates a relay whose closure activates another relay acting as an engine circuit breaker  9 .  
     [0014] As more specifically illustrated in FIG. 2, the terminal of the vehicle driver&#39;s door switch  12  is connected through a diode  13  to the positive supply terminal  14  of a conventional car alarm audio sensor  15  such as Model GS-100B sold under the PROTEC brand name. The door switch  12  is wired to apply a positive 12-volt to the audio sensor terminal  14  when the door is opened. The negative power supply terminal  16  of the audio sensor is connected to one of the output terminals  17  of a conventional vehicular alarm control unit  18  such as Model M3 sold under the MARKSMAN brand name. The terminal  17  is one that supplies a negative or grounding signal when the alarm control unit is enabled when the car door is locked by the authorized operator. The audio sensor  15  generates and delivers on its output terminal  19  a ground or negative pulse upon detection of the slightest noise while the door is opened. That output terminal  19  of the audio sensor is wired to one of the energizing coil terminals  20  of the relay  6 , the other coil terminal  21  is connected by another diode  22  to the positive terminal of the vehicle battery  23 . Accordingly, upon detection of an illegal entry manifested by the opening of the door and the detection of a slight noise, the relay is energized and a closure is provided between the normally open contact terminals  24 ,  25 , those two terminals are wired in parallel with the terminals  26 ,  27  of the “SEND” pushbutton on the cellular telephone handset  2 .  
     [0015] It should be understood that the above-described silent alarm apparatus may be complemented by a conventional siren alarm system operating from the same door switch and audio sensor.  
     [0016] As more specifically illustrated in FIG. 3, in the automotive remote engine disabling unit  11 , the same audio detector  7  used in the intrusion detector and calling unit  10  is positioned to sense the ringing of the telephone handset  2 . An audio focusing and amplifying unit  30  is preferably used between the handset  2  and the sensor  7  for more effective and reliable operation. The same negative pulse output  19  that was used in the intrusion detector and calling unit  10  to activate the relay  6  is also used in a similar manner to activate another relay  8 . The normally open contact terminals  24 ,  25  of the relay are used to activate another relay acting as a circuit breaker between the ignition switch  32  and the distribution coil  33 .  
     [0017] Accordingly, when the telephone handset rings, the audio detector energizes the relays which upon closure causes the circuit breaker  9  to trip and to cut the supply of power to the engine power distribution circuit.  
     [0018] The supply to the coil of the relay  9  is controlled by a receiver  31  of the type used in connection with car security systems. The receiver can be remotely addressed by the legitimate owner to cut the power for the relay and, thus, disarm the engine disabling unit. In other words, the power is allowed to flow from the ignition switch to the coil through the normally closed contact of the circuit breaker relay  9 .  
     [0019] Illustrated in FIG. 4 is an alternate embodiment of the engine disabling system. This system is built around an engine deactivating unit  34  of the type commercdially available under the generic name of anti-assault module such as Model AS-1000 sold under the PROTEC brand name. This unit connects to the electrical circuit of the car engine and has the-capability of disabling critical engine function upon receipt from the telephone handset  2  of a signal appearing on a terminal  36  when the phone rings. A current limiting resistor  35  is interposed between the handset and the engine deactivating unit.  
     [0020] It should be noted that the application of the above-described invention is not limited to vehicle security but can be extended to protect other mobile as well as immobile structures and to answering a variety of emergency conditions, or to remotely disable a variety of electro-mechanical devices in response to a telephone call.  
     [0021] While the preferred embodiments of the invention have been described, modifications can be made and other embodiments may be devised without departing from the spirit of the invention and the scope of the appended claims.