RU2037440C1 - Device for double alarm signalling of unauthorized use of automobile - Google Patents

Abstract

FIELD: automotive industry. SUBSTANCE: device has logic unit, passenger doors, trunk and hood limit switches with make and break contacts. Make contacts of switches are connected directly to logic unit. Device has also drivers door limit switch with make contact connected to logic unit through time delay element. It has also trunk and hood lock electromagnets, radio transmitter, antenna, independent alarm and radio receiver. Installed in key hole of ignition switch is shutter coupled with additional limit switch which has made and break contacts, make contact being connected to logic unit through its time delay element. EFFECT: enhanced reliability of protection. 5 dwg

Description

 The invention relates to the automotive industry, in particular relates to the protection of a vehicle from the penetration of unauthorized persons and theft from a parking place.

 There are various alarm systems designed to protect the vehicle from unauthorized persons and containing primary alarm units.

 There is also known a prototype device for double signaling about unauthorized use of a car, which contains alarm and radio alarm triggering units located on a vehicle equipped with an ignition lock with a slot for the ignition key, and alarm generation logic unit and a radio transmitter, the inputs of which are connected to the corresponding starting blocks, a local annunciator connected to the logic output one node formation of disturbing signals and located outside the car radio.

 The prototype does not provide sufficient protection for the car from unauthorized use, since, having penetrated in some way into the car’s interior (through broken glass), the hijacker can take up a long time to select the key to the ignition switch or search for a “secret” switch. In addition, in the case of using the prototype, a variant is also possible in which the minus wire connecting the battery to the mass is cut off, as a result of which it becomes possible to perform any manipulations with the machine without fear of an alarm.

 The aim of the invention is to increase the reliability of the device for dual alarm about unauthorized use of the car and simplify its operation.

 The positive effect expected from the use of the invention is to increase the reliability of the device due to the fact that the alarm has two circuits, one of which gives an audible signal for unauthorized use directly in the car, and the other allows you to turn on the alarm in a portable radio located at the owner what happens in each case of interruption of the power supply circuit of the radio transmitter, the starting block of which is made in the form of a set of opening contacts of the ends ry switches of the opened elements of the car and ignition valve latches. In this case, the second circuit is triggered even when the car battery is turned off.

 The essence of the invention lies in the fact that in a device for double signaling about unauthorized use of a car, comprising on-board alarm blocks and radio transmissions located on a trailer equipped with an ignition switch with a slot for the ignition key, made on the limit switches of the vehicle’s openable elements, a logical unit generating alarm signals and a radio transmitter whose inputs are connected to the corresponding starting blocks, a local signaling device connected to the logic output one node formation of disturbing signals and located outside the car radio installed in the ignition slot valve associated with an additional limit switch, one terminal of which is introduced to the starting radio unit and the other element is connected in series with a time delay in the start of alarm unit. In this case, the radio start-up unit is made in the form of a set of opening contacts of the limit switches of the vehicle’s open elements and the ignition switch latches, connected in series to the power supply of the radio transmitter, which is torn apart at the time of unauthorized use of the car with the subsequent supply of alarm signals by the radio receiver.

 In FIG. 1 shows a car on which (one of the options) the location of the security alarm is indicated; figure 2, the ignition switch with a valve in the slot and the position of the ignition switch; figure 3 radio; in FIG. 4 schematic diagram of the operation of the device; in FIG. 5 hood (trunk) lock.

 An example of a specific implementation can be the following scheme of a device for double signaling about unauthorized use of a car, containing logic block 1, limit switches 2, 3, 4, 5, 6 of passenger doors, trunk and hood, respectively, with normally closed and normally open contacts, moreover, normally open the contacts of these switches are connected directly to the logic unit 1, the limit switch 7 of the driver’s door, also having normally open and normally closed contacts, and normally open The live contact of the limit switch 7 is connected to the logic block 1 through the time delay element 8 located in block 1. The device also contains electromagnets 9 and 10 of the trunk and hood locks, respectively, a radio transmitter 11, an antenna 12, an independent audio signal 13, and a radio receiver 14. In the slot Ignition switch 15 has a valve 16 connected to an additional limit switch 17 containing normally open and normally closed contacts, while its normally open contact is connected to logic block 1 through its element t time delay 18 is similar to a normally open contact of the limit switch 7 of the driver's door.

 The hood (trunk) lock includes a handle 19 and contacts 20 of the lock solenoid switch.

 Ignition lock 15 has various positions: everything is turned off (parking in the garage, the anti-theft system is not turned on, the key can be removed), side lights can be turned on; b ignition is turned on and all other circuits, except for the power supply of the logical unit 1 and the radio transmitter 11; included starter (not shown); d everything is included, with the exception of the power supply of the logical unit 1, the radio transmitter 11 and the parking light, which is switched on mechanically by the corresponding switch, the steering is locked.

 At the time when the key is removed from the ignition switch 15 in position g (anti-theft), the valve 16 is connected, connected to the additional limit switch 17, the electrical circuit is opened, connecting it through the time delay element 18 with the logic unit 1 of the device and the ground.

 Opening the driver's door causes a similar action of the logical unit 1 of the device, only with the limit switch 7.

 Pulling the key out of the ignition switch 15, opening and closing the driver's door turns on the power of the radio transmitter 11 and the entire alarm device.

 In the case of an unauthorized person opening any passenger door, the logic protection unit 1 (similar to the prototype) is triggered as a standard, reporting this with an audio signal 13. In addition, the power supply circuit of the radio transmitter 11 is broken, which ceases to emit periodic signals, and the radio 14 turns on the signal anxiety. The hood and trunk lid locks cannot be opened, as their electromagnets 10 and 9 are de-energized.

 When the driver’s door is opened, an alarm signal is transmitted through the time delay element 8 (an audible signal sounds) if the owner of the car does not turn off the alarm with the ignition key in a predetermined few seconds by placing the key in the ignition switch 15 in any position except position g (anti-theft). The same thing will happen if the hijacker, having somehow penetrated the cabin or sticking his hand through the broken window, tries to pick up the key to the ignition switch 15. When the shutter 16 is opened, immediately through the delay element 18, the sound signal 13 is turned on, if for these several seconds, the ignition switch 15 will not be open and the car will not be removed from the alarm.

 In all cases (opening the driver’s door or the valve 16 in the slot of the ignition switch 15), the power supply circuit of the radio transmitter 11 is interrupted, which ceases to emit periodic signals, and the radio 14 turns on the alarm.

 If the battery is disconnected from the mass in any way, the radio transmitter 11 ceases to generate, and the antenna 12 emits periodic signals and the receiving radio receiver 14 turns on an alarm.

 When the bonnet (trunk) cover is opened at any position of the ignition switch, except for position g (anti-theft), the electromagnet 10 (9) is energized and when the handle 19 is turned, the contacts 20 of the electromagnet switch are closed, which also triggers the bonnet (trunk) cover opens.

Claims (1)

 DEVICE FOR DOUBLE SIGNALING ABOUT UNAUTHORIZED USE OF A CAR, containing located on a car equipped with an ignition lock with a slot for an ignition key, alarm and radio alarm starting blocks, made on the limit switches of the opened car elements, the logical unit of which is used for generating alarm signals and appropriate trigger blocks, a local detector connected to the output of the logical node for generating alarm signals, and a radio receiver located outside the vehicle, characterized in that a valve is connected in the slot of the ignition switch connected to an additional limit switch, one of the contacts of which is inserted into the radio start-up unit, and the other is connected in series with the time delay element in the alarm start-up block, while the start block The radio transmission is made in the form of a set of disconnecting contacts of the limit switches of the unlocked vehicle elements and the ignition switch latches, connected in series in the chain power radio transmitter rupturable when unauthorized use of the vehicle and then supplying the alarm receiver.

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