Vehicle anti-theft system with remote security module
United States(US) Patent
Brown Thomas R. (Plainfield IL) Logan Richard H. (West Burlington IA) Hahn Robert W. (Lemont IL) Rodeghiero Charles D. (Naperville IL) Brekkestran Kevin L. (Fargo ND)
출원인 / 주소
J. I. Case Company (Racine WI 02)
피인용 횟수 :
39인용 특허 :
An anti-theft security system for an off-road vehicle is disclosed. The system includes a master control module, which may be part of the vehicle\s instrument cluster, and a remotely located security module, which is directly adjacent to at least one electrically-operated actuator of the vehicle nor
An anti-theft security system for an off-road vehicle is disclosed. The system includes a master control module, which may be part of the vehicle\s instrument cluster, and a remotely located security module, which is directly adjacent to at least one electrically-operated actuator of the vehicle normally operated as part of transporting the vehicle to another location. The security module includes a tamper-resistant housing which obstructs physical access to at least part of the actuator. The master module, which may include a microprocessor and LED display, has an operator interface such as a keypad for entering a first access code known only to authorized operators of the vehicle. When the sequence of entered keystrokes matches the first access code stored within the master module, the module automatically generates and transmits to the security module a signal containing a second and different access code. When the security module determines that the received signal is coded with the same second access code stored within its memory, a power switch within the security module is energized, thereby providing electrical power to the actuator so that the vehicle may be moved. The second access code contained in the signal transmitted between modules may be an analog signal encoded by using a special voltage, frequency or waveform, or a serial digital signal encoded with a multi-bit code. To further improve security, the master module is arranged to allow the first access code stored therein to be reprogrammed when a special sequence of keystrokes is entered.
In an off-road vehicle anti-theft system which controls when at least one electrically-operated actuator on the vehicle may be operated, comprising: a master control module including operator input means for entering a sequence of first signals from an operator of the vehicle, means for determining
In an off-road vehicle anti-theft system which controls when at least one electrically-operated actuator on the vehicle may be operated, comprising: a master control module including operator input means for entering a sequence of first signals from an operator of the vehicle, means for determining whether the entered sequence of first signals matches a first template in the master control module, and means of automatically generating a second signal for transmission to a remote location when the entered sequence of first signals matches the first template; and security module means, at a location remote from the master control module and directly adjacent to the one electrically-operated actuator for protecting the actuator against unauthorized operation, the security module means including signal input means for receiving the second signal from the master control module, means for determining whether the received second signal includes the first predetermined identifying characteristic; the operator input means includes a keypad having a plurality of keys; the sequence of first signals is a sequence of at least three keystrokes on the keypad; the means for determining whether the entered sequence of first signals received form the operator includes memory means for storing a sequence of at least three characters corresponding to three predetermined keystrokes; and the means for automatically generating includes means for encoding at least eight bits of information in the second signal; wherein the electrically-operated actuator is a device selected from the group of electrical devices employed on the vehicle consisting of solenoids and electric motors, and the portion of the vehicle is part of a vehicle subsystem selected from the group of vehicle subsystems consisting of the fuel delivery subsystem, the transmission control subsystem, and the control subsystem for a vehicle-stabilizing system including at least one deployable stabilizer, and wherein: the means for providing an electrical signal to the actuator includes a solid-state power switching device; and, wherein the master control module also includes means for readily changing the first template without disassembly of the master control module and without replacement of components within the master control module, such that, after the first template is changed, a different sequence of first signals must be entered by the operator in order to match the first template.
이 특허에 인용된 특허 (7)
Adkins Joey B. (Willowick OH) Frantz Jack W. (Mayfield Heights OH), Anti-theft control system.