CN2369912Y

CN2369912Y - Anti-theft safety device for automobile power cut-out

Info

Publication number: CN2369912Y
Application number: CN99225343U
Authority: CN
Inventors: 王茂森; 徐瑞宏
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-01-08
Filing date: 1999-01-08
Publication date: 2000-03-22
Anticipated expiration: 2009-01-08

Abstract

The utility model relates to an anti-theft safety device for automobile service interruption, which is composed of a touch sensing element, a frequency tracking and phase locking unit, an amplifying loop, a central processing and controlling unit, a relay switch unit, an alarm and sound producing device and a power supply. The utility model is characterized in that the touch sensing element is installed in an automobile body, and the central processing and controlling unit is used for controlling starting devices, such as a starting power supply, an oil line system, etc., in the automobile. When the automobile needs to be started to run, the power supply in the automobile needs to be switched on and the touch sensing element is touched for many times within a few defined seconds. Signals are processed by a built-in loop and can be transmitted to the central processing and controlling unit, so the power supply and the oil line system are judged and controlled to be switched on or off. Therefore, the utility model can effectively prevent the automobile from being stolen.

Description

A kind of automobile power-down anti-theft safety device

The utility model is a kind of automobile power-down anti-theft safety device, refer in particular to a kind of anti-theft safety device that is arranged at the appropriate location in vehicle body or the car, it can be to the thief when will starting vehicle, if not seeing through the sensing element of above-mentioned safety device decodes, then the oil piping system of vehicle and source switch can be seen through the relay switch unit of establishing in and remain in closed condition, and predeterminable alarming device sends caution sound and reminds car owner or contiguous personnel.

Along with the order benefit of auto-industry progresses greatly, automobile-used siren horn all is buried line and an alarm device in the compartment, respond to the phenomenon of rocking of vehicle body or voltage unusual fluctuation with it, and then generation alarm tweeting sound is reminded this car owner, yet, this alarm device has extremely sensitive security role, but because the crime action is generally all very rapid, the car owner that is everlasting hears the news when rushing to, car is left by force from the scene, with regard to above-mentioned warning system, all only possesses the function of giving the alarm, sail the aspect for the robber, there is no performance supression effect, and its induction mode needs to have in car body by the time and significantly rocks or when starting electric switch in the car without reason, just trigger alarm sound to some extent, even so in practicality, can not reach more complete antitheft target, in addition, industry is on the practice that prevents the vehicle loss, but be provide a kind of locking in car foot-driven machine spare (as throttle, the brake power-transfer clutch) or the pinning structure of locking on gear, and then reach restriction and drive necessary executive component, now can reach antitheft purpose of sailing, yet these anti-theft appliances, as long as it is ripe in the cooresponding time of human of opening these locksets (several approximately seconds were to tens of seconds), can have no to dismantle this locking arrangement under the situation that the people knows, can reach equally and drive a purpose of picking up the car; In addition then, with present vehicular intrusion alarm, its installing and all comparatively loaded down with trivial details difficulty of means of keeping in repair need be dependent on the professional technician and can reach, and be not easy in the practicality; Thereby design a kind of mode of utilizing the induction oscillator intensity to change and do control, wherein, it is the interior or interior appropriate location of glass of vehicle body that the touch inductor of this product is installed in automobile, when utilizing its touch inductor energy perception foreign object to touch this place, change oscillator intensity change-detection differentiate, though this design can improve the shortcoming of above-mentioned all grades, but because of its reason is to utilize the variation of oscillator intensity to trigger with the technology of perception, yet oscillator intensity changes because of the kenel of installing easily, length such as distribution, the influence of distribution ambient environment and decaying, and it is then too blunt too by force, then irritated too, particularity is difficult to be grasped, and causes the inconvenience of user on using.

In view of common automobile still has above-mentioned shortcoming with Car Burglar Alarm, so the inventor improves design cost utility model automobile power-down anti-theft safety device at its shortcoming.

To detailed construction of the present utility model, application principle, be further described as follows below with reference to following accompanying drawing:

Fig. 1 is a circuit diagram of circuit of the present utility model.

Fig. 2 is a circuit diagram of the present utility model.

Fig. 3 is an action flow chart of the present utility model.

See also Fig. 1, shown in Figure 2, automobile power-down anti-theft safety device of the present utility model is by touching sense Answer element 10, frequency tracking phase locking unit 20, amplifying return circuit 30, central processing control unit 40, relay Opening/closing unit 50, caution pronunciation device 60, LED light 70 and power management group 80 consist of, and touch Touch sensing element 10 and be connected with frequency tracking phase locking unit 20, an output of this frequency tracking phase locking unit 20 End is connected with amplifying return circuit 30, and the other end is connected with central processing control unit 40, and central processing controls is single Unit 40 is serially connected with power management group 80 in order to control the action of each element circuit, central processing control unit 40 One output is connected with relay switch unit 50, and relay switch unit 50 other ends and power management group 80 connect Connect, and relay switch 50 is to connect with automotive oil system, Circuits System, in addition central processing control unit 40 1 outputs, an input memory cell 41 in parallel. So can make its frequency when foreign object approaches or touch produces Changing and be subjected to the sensing of this touch sensible element 10, so its touch position sensor can be arrested and is limited to this The direct touch of sensing element 10, and indirectly mode should sense in default feasible induction range internal trigger Answer element 10; This touch sensible element 10 namely can be with this signal transmission behind the signal of sensing the start touch Carry out relatively working of frequency shift (FS) to frequency tracking phase locking unit 20, namely the frequency tracking phase locking unit 20 Can constantly be shaken by the oscillation circuit 21 of inside and send a frequency values, hereby provide comparator 22 to compare frequently The work of rate skew, and constantly provide a reference frequency to give comparator 22 by central processing control unit 40 Do further circulating comparison, even have a touch signal to import frequency into by touch sensible element sensing 10 After following the trail of phase locking unit 20, namely can affect the frequency values that its internal oscillator loop 21 vibrates, then produce it The skew of frequency of oscillation, again and the reference frequency that comparator 22 will provide according to central processing control unit 40 Be the foundation of original frequency of oscillation value, and then compare the frequency difference after unusual fluctuation changes, and amplify through one again Amplification is processed with this unusual fluctuation frequency signal in loop 30, again these frequency offset signals input central authorities is processed control Unit 40 processed is analyzed, and default starting drive is controlled to some extent, therefore, utilizes the frequency tracking lock The sensing of 20 pairs of frequency shift (FS)s of facies unit is for the induction of frequency variation, can improve above-mentioned oscillator intensity sense All shortcomings that affected by the intensity size reach and trigger stable effect, so when the electricity of user with this car After opened in the source, this anti-theft security loop was subjected to electricity and starts at once, again book setting after opening sometime in Need this triggering sensing element 10 of touching some lower, as the password value of removing safety, and this setting code value Setting with change is can set input switch 11 by one to carry out operating and setting, and this password value that sets is through central authorities The arrangement of processing and control element (PCE) 40-is delivered in the memory cell 41 again and is stored, so if touch information Be the number of times of decoding in the non-time that in memory cell 41, prestores, then will be by central processing control unit 40 control relay opening/closing units 50 keep turn-offing the oil piping system of automobile or starting power supply, make vehicle open Moving, and can install separately caution pronunciation device 60 and a LED light 70, so that sounding the alarm, Reminding car owner or near personage's vigilance, and be subjected to central processing control unit 40 through a LED light 70 Control under, and can be in the automobile suspended state tool continue glitteringly to want in the effractor anti-theft device is arranged with warning, And be to be provided with a delay circuit 61 before this caution pronunciation device 60, if be closed in order to the power supply in the car After still sustainable toot be the prolongation warning function of a period of time, and all clear of this device decoding action is same Also need earlier the power supply in the car to be reopened, and under the preestablishing of central processing control unit 40, and energy To touch this touch sensible element 10 mode under some, make touch sensible element 10 receive induction after, again Be conveyed in the central processing control unit 40 through home loop, and do the releasing of alarm, in addition the utility model then Electric energy be the voltage-stabilized power supply that provides via power management group 80.

Shown in please refer to the drawing 3, the possible action flow process of the utility model anti-theft safety device is as follows, and this device is In the electric lock of automobile in outage from car state (" passs " key) 90 o'clock, be that the mode that stops to open is left unused, And this above-mentioned central processing control unit 40 is with the devices such as the oil piping system in the automobile and startup power supply, control System remains in off state, and non-its control conducting then can't be started car, and when this idle state, can Send monitored state (the LED lamp is glittering) 91 by central processing control unit 40 starts one LED light 70, There is the alarm of loading to recess to force it to change regard in this automobile and warn to want to invade, and if car will be sent out When moving, then need the key of car is inserted in the electric lock hole seat, and electric lock is opened into " opening " key position 92 with vapour The power supply opening of car, the anti-theft safety device this moment can because of the unlatching of power supply, begin counting institute in advance and start If time in above-mentioned touch sensible element whether accept decoding trigger action 93 to pre-determined number, if do not comply with Finish decode operation in the time of setting, then will and be somebody's turn to do by central processing control unit 40 startup alarm songs It is glittering 94 that LED light 70 still can continue, and when the alarm sound time-out, if will not be that electric lock switches back to " pass " The state of key, alarm sound then keep toot cry and do not stop, otherwise switch back to " pass " bonded state, then alarm if give To continue to turn-off 96 behind the scheduled delay, and this anti-theft safety device will be replied to idle state 90, if Want to restart vehicle, the operation that then need decode again according to above-mentioned program, and when the user default at this Finish the operation 93 of decoding in time, then central processing control unit 40 can close unit 50 with continuous establishing by cable at once Conducting oil piping system and start power supply, and make LED lamp 70 extinguish 97, and then vehicle can be started travel 98, When should the user not using this car, then this loop also can cooperate it to turn-off the feelings of automobile power source " pass " key Under the condition, and the state that fails 90 that can again recover to leave unused, and enter monitored state and restart LED and refer to Show that lamp 91 is warned and want the effractor that according to the above, the utility model can be further with the perceived frequency shift phenomenon Mode of operation replace common operational mode with perception amplitude (AM) Strength Changes, and must make when using Cause alarm generation misoperation because of external electrical Interference no longer easily, it is strong more further to improve amplitude The regulation and control puzzlement of degree sensing type reaches and more stablizes feasible purpose.

Comprehensive the above as can be known, automobile power-down safety device of the present utility model changes shortcoming in the common prior art, has reached contriver's goal of the invention.

Claims

1, a kind of automobile power-down anti-theft safety device, it is by centring control processing unit (40), amplifying return circuit (30), caution pronunciation device (60), power management groups (80) etc. are formed, it is characterized in that: touch sensible element (10) is connected with frequency tracking phase locking unit (20), one mouth of this frequency tracking phase locking unit (20) is connected with amplifier circuit (30), the other end is connected with central processing control unit (40), central processing control unit (40) is serially connected with power management group (80) in order to control the action of each element circuit, central processing control unit (40) one mouths are connected with relay switch unit (50), relay switch unit (50) other end is connected with power management group (80), and relay switch (50) is and automotive oil system, Circuits System connects, centring control processing unit (40) one outputs in addition, an input end memory cell (41) in parallel.

2, a kind of according to claim 1 automobile power-down anti-theft safety device is characterized in that; Caution pronunciation device (60) preposition delay circuits (61).