WO2009116032A2

WO2009116032A2 - Smart brake-lights warning system

Info

Publication number: WO2009116032A2
Application number: PCT/IL2009/000296
Authority: WO
Inventors: Rami Pery
Original assignee: 4P Inter Pro Ltd
Priority date: 2008-03-19
Filing date: 2009-03-16
Publication date: 2009-09-24
Also published as: WO2009116032A3

Abstract

A stop-light auto lamp mountable in a standard rear lamp cluster of a vehicle is disclosed. The lamp comprises a standard lamp base electrically connectable to an electrical circuit of said vehicle, a light-emitting member, a deceleration sensor, and a controller. The deceleration sensor is adapted to transmit to the controller an electrical signal corresponding to a value of a deceleration applied to the vehicle. The controller is adapted to receive the electrical signal and control a light emission of the light-emitting member according a predetermined protocol in response to said electrical signals.

Description

SMART BRAKE-LIGHTS WARNING SYSTEM

FIELD OF THE INVENTION

The present invention relates to taillights, and, more specifically, to adaptive stop-light_, lamps.

BACKGROUND OF THE INVENTION

According to US National Highway Traffic Safety Association, in 2003 alone rear-end collisions accounted for 29.6% of all crashes (1.9 million) and caused 5.4% of total fatal crashes (2076), 29.6% of all injury crashes (0.57 million), and 29.8% of all property-damage-only crashes (1.3 million). The major causal factor of rear-end collisions occurs when a following driver (FD) does not react correctly to the behavior of a leading driver (LV), due to either inadequate or late detection of LV deceleration. This has been attributed variously to factors such as inattention, inadequate perceptual discrimination, incorrect interpretation about traffic movements, or inadequate headway to allow the FD to react appropriately to emergency braking. Although current standard 'binary' brake light systems indicate whenever the driver of a LV has a foot on the brake that immeasurably assists in detection of LV deceleration. However, this information is frequently insufficient for helping the FD to properly judge the rate of deceleration. For such judgments as when to brake, how hard to brake, or whether it is necessary to brake at all, drivers have to rely on direct visual information about how rapidly FV is closing in on the LV. Whereas under most circumstances such directly perceived visual information may be adequate, in extreme situations such as emergency LV braking it is clearly not adequate, because there is always a danger that the FD might be dangerously too close to the LV before he is able to pick up adequate closing information. The braking response, namely, moving the foot to the brake pedal, is only the first stage. The braking adjustment stage is just as critical. Normally, a FD does not initiate full power braking as soon as he/she ascertains that a LV is braking since, among other things, this would risk a skid and/or being run into from behind. Rather, drivers normally adjust their braking on the basis of the perceived urgency of a situation. In an emergency, for example, it is important, and often critical, to adjust braking to an appropriate level early enough to avoid rear-end collisions, because the sooner deceleration is initiated, the more effective it is. Therefore, whenever the LV brakes very hard, and/or when lead distances are very short, any supplemental information that will allow the FD to control his/her braking profile appropriately should be of obvious benefit.

In the prior stop signaling technology, no matter with how much pressure the driver steps on the brake pedal and no matter how urgent is the stop, the brightness and color of stoplight is the same. There is no specific signal to tell whether the stop is a normal stop or a panic stop. If the drivers of rear vehicles cannot make a judgment quickly, it may cause a collision accident. Normally, when driving speed is 60 miles per hour, the driver of rear vehicle will take 2-4 seconds to observe that the front vehicle is reducing speed. Therefore, to provide a specific emergency stop signal can improve drivers' judgment, so that they make take an early action to avoid an accident.

An emergency-stop warning unit and a method for the control thereof, serving to reduce the severity and chance of a rear-end collision, is disclosed in US Patent 6225896 ('896). The unit utilizes a deceleration or collision impact sensor and vehicle electric power-source to turn on the white reverse-light upon high deceleration of the vehicle. The deceleration sensor consists of conductive liquid and two conductive contacts. As taught in '896, when emergency stops, the liquid level moves, due to inertia and touches the conductive contacts in the sensor to turn on the reverse lights. As a mechanical mechanism, it may not reflect only speed change but also may be triggered by road conditions. Many factors can trigger the sensor, such as vibration, and thus may trigger false alerts.

US Patent 5798691 ('69I) discloses a system including an elongated housing that has a receiving cavity therein and a front transparent shield covering the receiving cavity, and a lighting apparatus having a plurality of brake lighting LEDs mounted within the receiving cavity of the elongated housing. It is mounted at a central position of the front bumper. It provides specific warning signals when a vehicle is braking to slow down or fully stopped. This device uses LEDs as lighting components. In accordance with '691, the signal is a simple "lights on" mechanism with no variation in intensity corresponding to the intensity of deceleration. Because it is mounted within a front transparent shield, it only warns pedestrians that are positioned in front of the vehicle. Essentially, it is an accessory brake light. There is no component to sense the deceleration. Installation also requires remodeling of the existing vehicle. A further automatic emergency signal device for vehicles is disclosed in US Patent 5831521 ('52I). The device includes a casing mounted in a vehicle, a movable weight movable in a groove longitudinally formed in the casing, a sensor actuated by the movable weight due to inertia of the movable weight upon a sudden or emergency braking of the vehicle for sensing a trigger signal. A warning light is mounted at rear portion of a vehicle. When emergency stops, the warning light will be automatically lit. In accordance with '521, the mechanical sensor senses the deceleration and triggers control circuit to turns on the brake lights automatically. The sensor consists of a movable weight movable in groove. There are preset starting position and target position. When the movable weight reaches the target position, it triggers the device on. The sensor is a mechanical mechanism using inertia when a vehicle sudden stops. Its precision is low. Some road conditions may move movable weight in groove, such as when the vehicle moves downhill or uphill, and thus may provide false alerts. The device apparently provides a single level of activity and only for panic level deceleration.

US Patent Application 2006/0273891 ('89I) discloses an emergency stop signaling device for vehicles including a deceleration sensor which produces deceleration values, an integrated control circuit which receives the deceleration values and produces LED activation control signals. An LED array lights in response to the LED activation control signals from the integrated control circuit to produce a light pattern which is distinguishable from an ordinary braking signal. The deceleration sensor is preferably a digital deceleration sensor. The LED array is a flexible LED array, a portable LED array, a linear LED array or a circular LED or a combination of these. According to '891, the integrated control circuit produces signals which activate the LED array to a plurality of modes of activity including a tail light mode, a stop light mode, and a panic stop mode.

The cited patent documents teach the technical solutions characterized by furnishing the mass production, vehicles with additional devices adapted to measure a value of deceleration applied to the vehicle and to energize signaling means. As known, Mercedes-Benz equips luxury cars with blinking stop-lights. It should be emphasized that the disclosed systems are adaptable for new vehicles. The aforesaid systems can be mounted on the new vehicles in factory environment. Equipping all types of vehicles, namely, both new vehicles and vehicles in use, with active car safety systems against rear-end collisions is a long-felt unmet need. SUMMARY OF THE INVENTION

It is one object of the present invention to provide a stop-light bulb mountable in a standard rear bulb cluster of a vehicle; said bulb comprising:

(a) at least one bulb base placeable into an standard bulb holder, electrically connected to the electrical circuit of said vehicle; said circuit is energized in a response to activation of the brake system of said vehicle by a driver;

(b) at least one light-emitting member electrically connected to said bulb base and adapted to emit light in response to energizing said light-emitting member;

(c) at least one electrical deceleration sensor in electrical communication with said electrical circuit of said vehicle, and adapted to transmit an electrical signal corresponding to the deceleration value applied to said vehicle;

(d) at least one gravitation normalizing sensor adapted to sense the current tilting angle of said vehicle; and,

(e) at least one controller in electrical communication with said electrical deceleration sensor and said gravitation normalizing sensor, adapted to (i) receive said electrical signal from said electrical deceleration sensor; (H) to calculate said corresponding deceleration value; to (in) constantly decouple said deceleration value from said gravitation component according to said angle sensed by said gravitation normalizing sensor; and, to (iv) control the light emission of said light-emitting member according to a predetermined protocol if said deceleration value is above a predetermined threshold; wherein said deceleration value is constantly independent and decoupled of said '. gravitation component by means of said controller and said gravitation normalizing sensor.

It is another object of the present invention to provide the bulb as defined above, additionally comprising a road condition sensor adapted to sense road conditions selected from a group consisting of road's bumpiness, road's moisture, road's curvature or any combination thereof. It is another object of the present invention to provide the bulb as defined above, additionally comprising sensor adapted to sense different parameters selected from a group consisting of amount of outside light, humidity, weather or any combination thereof. It is another object of the present invention to provide the bulb as defined above, wherein said light emission is performed according to parameters selected from a group consisting of intensity, color, graphical patterns or any combination thereof.

It is another object of the present invention to provide the bulb as defined above, wherein said gravitation normalizing sensor or said electrical deceleration is selected from a group consisting of a micromachined acceleration sensor, a thermal acceleration sensor, a strain gauge acceleration sensor, a resonance acceleration sensor, magnetic induction acceleration sensor, a laser acceleration sensor, surface acoustic wave acceleration sensor, MEMS sensor, tilt sensor, inclinometer or any combination thereof.

It is another object of the present invention to provide the bulb as defined above, wherein said controller is adapted to provide

(a) a constant energization of said light-emitting member, if said electrical signal is below said predetermined threshold; and,

(b) a time modulated voltage applied to said light-emitting member if said electrical signal is above said predetermined threshold.

It is another object of the present invention to provide the bulb as defined above, wherein said light-emitting member, is selected from a group consisting of a bulb filament, LEDs or any combination thereof.

It is another object of the present invention to provide the bulb as defined above, wherein said light-emitting member is assembled from a plurality of light emitting diodes; said diodes are controlled by said. controller individually.

It is another object of the present invention to provide the bulb as defined above, wherein said controller is adapted to create predetermined graphical patterns by means of individually activating predetermined diodes in response to said deceleration value.

It is another object of the present invention to provide the bulb as defined above, additionally comprising a database adapted to data log the behavioral driving of said driver.

It is another object of the present invention to provide the bulb as defined above, wherein said database is adapted to wirelessly transmit said behavioral driving to a predetermined PC.

It is another object of the present invention to provide a stop-light device comprising: (a) at least one electrical connector electrically connectable to the electrical circuit of a vehicle, adapted to be energized in a response to activation of the brake system of said vehicle by a driver; and,

(b) at least one light-emitting member electrically connected to said electrical connector and adapted to emit light in response to energizing said light-emitting member;

(e) at least one controller in electrical communication with said electrical deceleration sensor and said gravitation normalizing sensor, adapted to (i) receive said electrical signal from said electrical deceleration sensor; (H) to calculate said corresponding deceleration value; to (Hi) constantly decouple said deceleration value from said gravitation component according to said angle sensed by said gravitation normalizing sensor; and, to (iv) control the light emission of said light-emitting member according to a predetermined protocol if said deceleration value is above a predetermined threshold; wherein said deceleration value is constantly independent and decoupled of said ; gravitation component by means of said controller and said gravitation normalizing sensor.

It is another object of the present invention to provide the device as defined above, wherein said deceleration sensor is a micromachined accelerometer.

It is another object of the present invention to provide the device as defined above, wherein said controller is adapted to provide

(b) a time modulated voltage applied to said light-emitting member if said electrical signal is above said predetermined threshold. It is another object of the present invention to provide the device as defined above, wherein said light-emitting member is assembled from a plurality of light emitting diodes; said diodes are controlled by said controller individually.

It is another object of the present invention to provide the device as defined above, wherein said controller is adapted to create predetermined graphical patterns, or different colors and intensities by means of individually activating predetermined diodes in response to said deceleration value.

It is another object of the present invention to provide the device as defined above, wherein said controller is adapted to create predetermined graphic patterns by means of individually activating predetermined diodes in response to said deceleration value.

It is another object of the present invention to provide the device as defined above, wherein said controller is adapted to provide information corresponding to decelerating status of said vehicle.

It is another object of the present invention to provide the device as defined above, wherein said information comprises letters, symbols, color schemes and any combination thereof.

It is another object of the present invention to provide the device as defined above, wherein said device is mountable in an in-car position visually available to the back and/or forward driver.

It is another object of the present invention to provide the device as defined above, wherein said device is mountable in an out-car position visually available to the back and/or forward driver.

It is another object of the present invention to provide the device as defined above, additionally comprising a road condition sensor adapted to sense road conditions selected from a group consisting of road's bumpiness, road's moisture, road's curvature or any combination thereof.

It is another object of the present invention to provide the device as defined above, additionally comprising sensor adapted to sense different parameters selected from a group consisting of amount of outside light, humidity, weather or any combination thereof.

It is another object of the present invention to provide the device as defined above, additionally comprising a database adapted to data log the behavioral driving of said driver.

It is another object of the present invention to provide the device as defined above, wherein said database is adapted to wirelessly transmit said behavioral driving to a predetermined PC.

It is another object of the present invention to provide the device as defined above, wherein said gravitation normalizing. sensor or said electrical deceleration is selected from a group consisting of a micromachined acceleration sensor, a thermal acceleration sensor, a strain gauge acceleration sensor, a resonance acceleration sensor, magnetic induction acceleration sensor, a laser acceleration sensor, surface acoustic wave acceleration sensor, MEMS sensor, tilt sensor, inclinometer or any combination thereof.

It is another object of the present invention to provide a method of improving vehicle safety. The method comprises steps selected inter alia from:

(a) providing an intelligent stop-light bulb comprising: i. a bulb base placeable into an standard bulb holder, electrically connected to the electrical circuit of said vehicle; said circuit is energized in a response to activation of the brake system of said vehicle by a driver; ii. a light-emitting member electrically connected to said bulb base and adapted to emit light in response to energizing said light-emitting member; iii. at least one electrical deceleration sensor in electrical communication with said electrical circuit of said vehicle, and adapted to transmit an electrical signal corresponding to the deceleration value applied to said vehicle; iv. at least one gravitation normalizing sensor adapted to sense the current tilting angle of said vehicle; and, v. at least one controller in electrical communication with said electrical deceleration sensor and said gravitation normalizing;

(b) mounting said intelligent stop-light bulb into a standard rear bulb cluster of said vehicle;

(c) activating said brake system of said vehicle thereby energizing said electrical circuit of said vehicle;

(d) transmitting an electrical signal corresponding to the deceleration value applied to said vehicle by means of said electrical, deceleration sensor; and,

(e) receiving said electrical signal by means of said controller;

(f) calculating said gravitation component by means of said controller by calculating said angle sensed by said, gravitation normalizing sensor;

. (g) . decoupling said deceleration value from said gravitation component according to said angle sensed by said gravitation normalizing sensor;

(h) calculating said deceleration value whilst eliminating said gravitation component and, (i) energizing said light-emitting member if said deceleration value is above a predetermined threshold thereby emitting light from said light-emitting member according to a predetermined protocol.

It is another object of the present invention to provide the method as defined above, additionally comprising step of selecting said gravitation normalizing sensor or said electrical deceleration from a group consisting bf a micromachined acceleration sensor, a thermal acceleration sensor, a strain . gauge acceleration sensor, a resonance acceleration sensor, magnetic induction acceleration sensor, a laser acceleration sensor, surface acoustic wave acceleration sensor, MEMS sensor or any combination thereof.

It is another object of the present invention to provide the method as defined above, additionally comprising step of providing:

(a) a constant energization of said light-emitting , if said electrical signal is below said predetermined threshold; and,

It is another object of the present invention to provide the method as defined above, wherein said step of providing said time modulated voltage is performed such that the modulation frequency depends on a value of deceleration applied to said vehicle.

It is another object of the present invention to provide the method as defined above, additionally comprising step of providing said time modulated voltage characterized by increasing in modulation frequency in response to increasing in said value of detected deceleration.

It is another object of the present invention to provide the method as defined above, wherein said increasing in modulation frequency is performed on a staggered basis in response to elevating predetermined thresholds by said value of detected deceleration.

It is another object of the present invention to provide the method as defined above, additionally comprising step of real time varying said predetermined threshold according to parameters selected from a group consisting of road's condition, weather, humidity, wetness, amount of day light or any combination thereof.

It is another object of the present invention to provide the method as defined above, additionally comprising step of verifying said stop-light bulb is activated in response to said electrical signal if said electrical signal is above a predetermined threshold It is another object of the present invention to provide the method as defined above, additionally comprising step of selecting said road condition sensors from a group consisting of: acceleration sensor, attitude sensor, level sensor.

It is another object of the present invention to provide system for improving vehicle safety, comprising:

(a) at least two stop-light bulb, each of which is mountable in a standard rear bulb cluster of a vehicle; each of said stop-light bulb comprises: i. at least one bulb base placeable into an standard bulb holder, electrically connected to the electrical circuit of said vehicle; said circuit is energized in a response to activation of the brake system of said vehicle by a driver; and ii. at least one light-emitting member electrically connected to said bulb base and adapted to emit light in response to energizing said light-emitting member; iii. at least one electrical deceleration sensor in electrical communication with said electrical circuit of said vehicle, and adapted to transmit an electrical signal corresponding to the deceleration value applied to said vehicle; iv. at least one gravitation normalizing sensor adapted to sense the current tilting angle of said vehicle; and, v. at least one controller in electrical communication with said electrical deceleration sensor and said gravitation normalizing sensor, adapted to (i) receive said electrical signal from said electrical deceleration sensor; (H) to calculate said corresponding deceleration value; to (Hi) constantly decouple said deceleration value from said gravitation component according to said angle sensed by said gravitation normalizing sensor; and, to (iv) control the light emission of said light-emitting member according to a predetermined protocol if said deceleration value is above a predetermined threshold;

(b) synchronization system in communication with each of said stop-light bulb; wherein said synchronization system ensures all said stop-light bulb activate when at least one of said stop-light bulb activates.

It is another object of the present invention to provide the system as defined above, additionally comprising a road condition sensor adapted to sense road conditions selected from a group consisting of road's bumpiness, road's moisture, road's curvature or any combination thereof. It is another object of the present invention to provide the system as defined above, additionally comprising sensor adapted to sense different parameters selected from a group consisting of amount of outside light, humidity, weather or any combination thereof.

It is another object of the present invention to provide the system as defined above, wherein said light emission is performed according to parameters selected from a group consisting of intensity, color, graphical patterns or any combination thereof.

It is another object of the present invention to provide the system as defined above, wherein said gravitation normalizing sensor or said electrical deceleration is selected from a group consisting of a micromachined acceleration sensor, a thermal acceleration sensor, a strain gauge acceleration sensor, a resonance acceleration sensor, magnetic induction acceleration sensor, a laser acceleration sensor, surface acoustic wave acceleration sensor, MEMS sensor or any combination thereof.

It is another object of the present invention to provide the system as defined above, wherein said controller is adapted to provide

It is another object of the present invention to provide the system as defined above, wherein said light-emitting member is selected from a group consisting of a bulb filament, LEDs or any combination thereof.

It is another object of the present invention to provide the system as defined above, wherein said light-emitting member is assembled from a plurality of light emitting diodes; said diodes are controlled by said controller individually.

It is another object of the.present invention to provide the system as defined above, wherein said controller is adapted to create predetermined graphical patterns by means of individually activating predetermined diodes in response to electrical signals of said sensor.

It is another object of the present invention to provide the system as defined above, additionally comprising a database adapted to data log the behavioral driving of said driver.

It is still an object of the present invention to provide the system as defined above, wherein said database is adapted to wirelessly transmit said behavioral driving to a predetermined PC. It is lastly an object of the present invention to provide the system as defined above, additionally comprising means adapted to verify that both said at least two stop-light bulbs are activated in response to said electrical signal if said electrical signal is above a predetermined threshold.

It is still an object of the present invention to provide the system as defined above, wherein said at least one electrical deceleration sensor, said at least one gravitation normalizing sensor and said at least one controller are designed as a chip.

It is still an object of the present invention to provide the device as defined above, wherein said at least one electrical deceleration sensor, said at least one gravitation normalizing sensor and said at least one controller are designed as a chip.

It is still an object of the present invention to provide the bulb as defined above, wherein said at least one electrical deceleration sensor, said at least one gravitation normalizing sensor and said at least one controller are designed as a chip.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to understand the invention and to see how it may be implemented in practice, a plurality of embodiments is adapted to now be described, by way of non-limiting example only, with reference to the accompanying drawings, in which

FIG. 1 is a block diagram the emergency stop signal device (PRIOR ART);

FIG. 2 is a schematic view of the intelligent stoplight lamp;

FIG. 3 is an electrical circuit diagram of the lamp connection to the vehicle circuitry.

FIG. 4 is a graph of the dependence of the voltage applied to the light-emitting member on the deceleration value for the one-threshold protocol; FIG. 5 is a graph of the dependence of the voltage applied to the light-emitting member on the deceleration value for the two-threshold protocol; FIG. 6 is_. a flowchart of the method of improving vehicle safety for the one-threshold protocol; and

FIG. 7 is a flowchart of the method of improving vehicle safety for the two-threshold protocol. FIGS. 8-12 illustrate the synchronization backup feature. FIG. 13 illustrates the signaling timing issues. FIGS. 14-17 illustrate the road's conditions deceleration threshold correction method. DETAILED DESCRIPTION OF THE INVENTION

The following description is provided, alongside all chapters of the present invention, so as to enable any person skilled in the art to make use of said invention and sets forth the best modes contemplated by the inventor of carrying out this invention. Various modifications, however, are adapted to remain apparent to those skilled in the art, since the generic principles of the present invention have been defined specifically to provide an intelligent stop-light auto lamp and a method of improving vehicle safety.

The term 'rear-end collision' (often called rear-end) hereinafter refers to a traffic accident where a vehicle, usually an automobile or a truck, impacts the vehicle in front of it. Typical scenarios for rear-ends are a sudden deceleration by the leading car. The driver of the following car has no time to brake and his/her car impacts the leading car.

The term 'light-emitting member' hereinafter unlimitedly refers to a portion of car lamp (bulb) adapted to emit the radiation of visible range (for example, a filament of the incandescent lamp or a LED main body of the LED automotive lamp).

The term 'flashing stop-light' hereinafter refers to a special stop-light mode characterized by applying voltage pulses at a predetermined repetition rate to the light emitting member resulting in the blinking car stop-light. c 'deceleration' hereinafter refers to the rate of change of the body velocity. The deceleration is mathematically defined as second time derivative of the body position.

The term 'about' refers hereinafter to a range of 25% below or above the referred value.

The term "behavioral driving" refers hereinafter to a curve representing the number of times the deceleration value applied to said vehicle is above a predetermined threshold vs. Time. In that way,. the driver (or anyone he/she wishes) will be able to learn how said driver is driving

(e.g., whether he is a calm, nervous, jumpy, dangerous, careful, or edgy driver.

Reference is now made to Fig. 1, showing a block diagram of a known emergency stop signal device. The aforesaid device consists of two main portions. A portion 100 belongs to a standard vehicle and comprises a switch 110 of a brake pedal (not shown) and rear stop-lights 120. A vehicle driver suppresses the brake pedal and activates the stop-lights 120 by closing the switch

110. A portion 200 is mountable on the standard vehicle. The portion 200 comprises a deceleration sensor 220, a controller 210, and a LED array 230. Closing the switch 110 energizes a circuitry of the portion 200, as well. The controller 210 applies a power voltage to the LED array 230 according to a predetermined protocol. The aforesaid protocol comprises two modes, namely, a standby mode characterized by the constant voltage on the LED array 230, and flushing mode characterized by voltage pulsing at a predetermined repetition rate. Reference is now made to Fig. 2, presenting an intelligent stop-light lamp 300. The stop-light lamp 300 is mountable in a standard vehicle rear lamp cluster and applicable to new vehicles and vehicles in use. The lamp 300 comprises a lamp base 305 adapted for mounting in a standard lamp holder (not shown) and a light-emitting member 310 constituting a LED array. In accordance with another embodiment of the current invention, the light-emitting member310 is a lamp filament. The lamp base 305 is furnished with a central electrical contact 330 and retention pins 320. An electrical voltage applied to the light-emitting member 310 is controlled by a controller 350 adapted to provide the electrical voltage according to a predetermined protocol. The aforesaid protocol comprises a standby mode and at least one mode of the flushing stoplight. Similar to the protocol known from the prior art, the standby mode corresponds to small values of the deceleration. In this case, the constant voltage applied to the light-emitting member 310. A deceleration sensor 340 provides to the controller 350 an electrical signal corresponding to deceleration applied to the vehicle. The controller 350 is preprogrammed to apply to the light- emitting member 310 the voltage pulses at a predetermined repetition rate in response to a sensor signal corresponding to the deceleration higher than a predetermined value. A number of sensors can be use as the sensor 340. For example, a thermal acceleration sensor based on a displacement of a heated body, a strain gauge acceleration sensor with damping a detecting element by silicon oil, a resonance acceleration sensor exploiting a load-induced frequency shift, a magnetic induction acceleration sensor detecting a displacement of a magnetic body, a laser acceleration sensor with measuring distances to reference pegs, and a surface acoustic wave acceleration sensor based on load influence on acoustic waves in a piezoelectric substrate can be used.

In accordance with the preferable embodiment of the current invention, a micromachined sensor is used as the deceleration sensor 340. The principle of operation of the micromachined accelerometer is based on a micromachined oscillator, which is deflected in its position due to the acceleration detectable by means of capacitive or piezoresitive methods. Reference is now made to Fig. 3, showing an electrical connection diagram of the stop-light lamp 300 to a standard vehicle. As seen in Fig. 3, the lamp 300 is energized by the brake pedal switch 110. A vehicle driver (not shown) suppresses the brake pedal and closes the switch 110. Referring to Fig 2, with increase of the deceleration value detected by the deceleration sensor 340, the controller 350 is switched from the standby mode to the flashing mode. Reference is now made to Fig. 4, illustrating a stop-light protocol used for signaling an emergency (panic) brakeage.

Fig. 4 depicts the stop-light protocol comprising the one deceleration-threshold (namely al) protocol. A braking process starts at the deceleration value which equals 0. After that, the deceleration value is increased. In the first period of the braking process marked by a green color (see region marked as 4a), the controller 350 is in the standby mode 370 (repetition rate/= 0). During that period, the voltage applied to the light-emitting member 310 is constant, and, therefore, the lamp 300 emits light continuously.

When the deceleration exceeding the predetermined value a_\ (thus, passing the threshold), the controller is switched on and now the flashing mode 380 marked by a red color (repetition rate/ =/i, see numerical reference 4b) begins.

As seen in Fig 4, the flashing mode is characterized by the voltage pulses applied to the light- emitting member 310. Consequently, the lamp 300 starts to flash at predetermined repetition rate (i.e., the voltage increases and decreases according to predetermined protocol). It should be emphasized that a waveform of the applied voltage pulses is not limited to the disclosed in the current invention. The voltage pulses of an arbitrary form are in the scope of the current invention. . .

Reference is now made to Fig. 5, depicting the two-acceleration (al and a2) threshold stop-light protocol. Similarly to Fig. 4, with increase of the deceleration value standby and two flashing modes are subsequently activated. When the deceleration value reaches values a_\ and #₂ of deceleration applied to the vehicle, the controller is switched from standby mode 370 to the first flashing mode 380 (repetition

fi,h <fύ, respectively. . . . .

Reference. is now made to Fig. 6, presenting a flowchart of a method .of improving vehicle safety. The method -400 comprises steps of providing the intelligent stop-light lamp 410. and mounting the lamp into the standard rear lamp cluster of the standard vehicle 420. Further, when suppressing the braking pedal and closing the corresponding switch, the vehicle driver energizes the lamp at step 430. During the breakage, the deceleration sensor transmits to the controller the electrical signals corresponding to detected deceleration values (step 440) analyzed by the controller (step 450). The controller fetches the stop-light mode according to the preprogrammed protocol. The deceleration values a < a_\ and a > a_\ correspond to a standby mode and flashing modes 470 and 460, respectively.

Reference is now made to Fig. 7, presenting a flowchart of another method of improving vehicle safety. The method 400a depicts the two-threshold stop-light protocol. Additionally to the method 400, the step 465 of the emergent brakeage mode II is appended. Thus, with increase of the deceleration value from 0 to a_\, from a_\ to α₂, and higher than a₂, the controller fetches modes 370, 360, and 365, respectively. The emergent brakeage modes I and II (steps 360 and 365) differs from each other in the voltage pulse repetition rate Z₁ and fχ. The method comprising a plurality of the emergent brakeage modes is in the scope of the current invention, as well. In accordance with the current invention, the stop-light lamp is mounted into the standard rear cluster of the standard vehicle. In other words, the intelligent stop-light lamp provided by the present application fits all different kinds of car. No special adjustment is needed. Therefore, according to a preferred embodiment of the present invention, the present invention provides an intelligent stop-light lamp which fits all different types of vehicles.

The aforesaid lamp is energized by means of the brake pedal switch. Being energized, the deceleration sensor transmits to the controller the electrical signals corresponding to the detected deceleration values. The controller analyzes the aforesaid deceleration values and fetches the lamp operational modes according to the preprogrammed stop-light protocol. The controller is switched between the standby, mode and the emergent brakeage modes according to the detected values of the deceleration applied to the vehicle. It corresponds to switching between permanent emitting and flushing of different repetition rates.

In accordance with another embodiment of the current invention, the light-emitting member is assembled from a plurality of light emitting, diodes. The aforesaid diodes are individually controlled by the controller such that the controller is adapted to create predetermined graphic patterns by means of individually activating predetermined diodes in response to electrical signals of said sensor. .

In accordance with a further embodiment of the current invention, the stop-light device connectable to an electrical circuit of the vehicle that is energized in a response to activating a vehicle, brake system by a driver. The aforesaid device further comprises a deceleration sensor and a controller. The controller is adapted to provide information corresponding to decelerating status of said vehicle. The aforesaid information comprises letters, symbols, color schemes and any combination thereof. The stop light device is mountable in in-car and out-car positions visually available for a following driver.

The disclosed invention provides the stop-light lamp adapted for mounting in the standard rear lamp cluster. The intelligent stop-light lamp includes the deceleration sensor and the controller has the lamp base placeable into a standard lamp holder. The disclosed lamp is applicable to all types of the vehicles. Thus, the suggested technical solution fills a long-felt unmet need, namely, equipping all types of vehicles with active car safety systems against rear-end collisions, more specifically, with the intelligent stop-light lamps.

Another provision of the current invention relates to a robust operation of the brake light signals.

There are many possible failure modes for a brake light signal ranging from lack of electrical connection, burnout of an incandescent bulb, overvoltage on an LED, blockage of the light from the device due, lack of brake signal due to faulty electrical signals, and the like.

Furthermore, since each bulb has its own deceleration sensor. It will react independently to a predefined deceleration level. However, when the actual deceleration level is close to the predetermined level, it is possible that only one bulb will react and flash, while the other bulbs will be lighted constantly.

As described above, this might happened due to the following reasons:

• Insufficient manufacturing accuracy;

• Angular differences in the bulb mounted inside the vehicle;

• Performing a braking operation whilst turning the vehicle.

Thus, a synchronization backup feature between the left blub, the right bulb and any 3^rd bulb that is able to verify, that all the bulbs are activated during an emergency brake is a must.

This synchronization feature ensures that when one bulb reacts to the deceleration, it will also

"tell" the other bulbs to do the same.

Reference is now made to figures 8-12 illustrating the above mentioned process. Once the driver presses the brake pedal strongly while driving (see figure 8), a relatively strong deceleration force is generated. Once, a deceleration level is above a predetermined level, the bulb light starts flashing; For example, the deceleration level is sufficient for activating the right bulb sensor, but for some reason it is not enough to active the other bulbs. For this reason, the other bulbs will start light constantly and not according to the predetermined flashing protocol (or alternatively, not according to any predetermined intensity, colors, patterns et cetera).

Since one of the bulbs has detected the deceleration as positive for flashing, it will start flashing its own light (see figure 9). At the same time, it will transmit a signal to the bulbs' supply voltage wire that will signal the other bulbs to flash too (see figure 10).

The signaling from the bulb (which is flashing) reaches the rest of the bulbs, as they are already connected to the same wiring system in the vehicle. This wiring system is an essential part of the original, vehicle wiring. No extra wiring is needed.

In other words, the current invention provides a brake light system with high degree of fault protection.

The first level of fault protection works by comparing the light level between the two (or three) brakelights.

According to one embodiment, a sensor such as a photovoltaic cell is used to detect light level from the brakelight. If one light or more lights is lit while another is not, the unlit light or lights are lit. This provision will serve to defeat any problems arising from wiring differences between the brakelights.

A second layer of fault protection is provided by adding secondary sealed light producing elements with their own secondary sealed power supplies. These may consist of separate LEDs not connected to the main power system, and therefore immune to power spikes, and due to the provision of a rechargeable battery, are also immune to power supply failure. The battery may be preferably connect to the car power supply through a diode and voltage clamp or other nonlinear elements allowing the battery to be charged by the car but preventing it from being discharged or overcharged.

A third layer of fault protection is provided by allowing the braking signal of the current invention to be activated solely by threshold accelerations, without regard to the brake signal provided by the car electric signal. In this way the system is immune to signal problems of the car; whenever the car decelerates beyond the predetermined threshold the brakelight system is activated, regardless of whether the driver hit the brakes and regardless of whether the car succeeds in delivering a braking signal to the brakelights. We refer now to Fig.11 where a practical circuit is shown for a particular implementation of the current invention. Each bulb contains a signaling detection circuit and a software algorithm. The bulb supply voltage 801 is fed into a "signaling detector" 802 which carries an 'on' voltage (e.g.,

12V) if an emergency brake signal is detected.

The circuit performs a logical OR operation 803 of the signaling detector 802 (if its positive) and the decelerometer 805 (i.e., if deceleration sensor is positive), thus activating the flash control

806 which periodically turns the solid state switch 804 off/on. This will cause the bulb 808 to flash.

In this manner, the signaling detection serves as a backup for the bulbs own sensor. IF the flash control (806) is triggered it will switch the bulb on and off via the solid state switch (808) which will cause the bulb to flash.

It should be pointed that, the above mentioned signaling mechanism uses the given +12V lighting power of the bulb, and does not require any additional wiring. This ripple over the +12V lighting wire is low, (5OmV, f<100KHz), and does not affect the rest of the vehicle systems

In Fig. 12 a variation of this circuit is shown wherein a battery is included to ensure power even during interruptions or even total loss of the automobile electronics. The diode 809 ensures charge can flow into the local rechargeable battery 810 but cannot flow out into the car electronics system (for instance in the case of a short across the car battery). The rechargeable battery 810 powers the system in the case of power loss from the car. Another addition in this circuit is an additional LED 811 which operates in parallel to the extant bulb 808 for redundancy.

In one embodiment of the invention the entire casing 812 is made to mate with existing sockets and bulbs, acting as a spacer between an existing socket and an existing bulb. The casing fits into the existing socket, and a regular bulb fits into the spacer.

It is within provision of the invention to provide the synchronization and signaling algorithm as defined above, regardless of bulb type (filament, LED et cetera).

According to one embodiment of the present invention, the signaling between the bulbs is implemented ih the following manner: Once the first bulb detects an emergency deceleration, it will load the +12V lighting wire in different timing patterns. These loading variations create a low ripple over the +12V lighting wire. All the bulbs are provided with a ripple detection circuit that detects this unique ripple. If detected, the bulb will perform an emergency light operation, thus all non-activated bulbs during a detected deceleration event will be activated by sensing said unique ripple.

As described, this signaling mechanism uses the given +12V lighting power of the bulb, and does not require any additional wiring. This ripple over the +12V lighting wire is low, (5OmV, f<100KHz), and does not affect the rest of the vehicle systems.

Signaling timing issue

Reference is now made to figure 13, which address the signaling timing issues. The entire signaling procedure takes a total of few milliseconds. Furthermore, these few milliseconds will not increasing the bulb respond time, since the bulb is turned on immediately when braking, regardless of the deceleration level (i.e., for the first 71ms). The flashing, if activated, will take place only after this period.

An example of the frequency used by the smart lamp could be 7Hz.

It is within provision of the current invention that the threshold acceleration for differentiated braking indication (such as flashing lights, increased brightness, color, patterns, or the like) could be continuously variable, and software controllable.

According to another embodiment, the threshold acceleration for differentiated braking indication (such as flashing lights, increased brightness, color, patterns, or the like) is predetermined.

The road's conditions deceleration threshold correction method

It is within provision of the invention that a software algorithm be employed to set the deceleration threshold, as follows. A software algorithm sets the deceleration threshold automatically according to the road condition, i.e. driving up-hill or down-hill. This, feature is essential since any slop of the vehicle generates a certain level of g force, as seen in Fig. 14. The slop angle (a ) can range from -90° to +90°. .

The software algorithm is based on the fact that the bulb is powered up a short time before the deceleration actually begins, as seen on Fig. 15. .

As soon as the bulb is powered up, a base (reference) sampling of the deceleration sensor output is performed, within about 0.01 sec. This value becomes the reference for the following deceleration measurements (see Fig. 16). From this point, if the delta between the reference value and the sensor real-time output is larger than a predefined value (threshold), the emergency lighting will be activated (see Fig 17).

It is within provision of the invention to use MEMS (Micro-Electro Mechanical System) sensors to reduce the size of the system, allowing it to be used in existing filament-type bulbs as well as

LED technology.

It is within provision of the invention to use a multi-axis decelerometer, and a software algorithm. The software algorithm detects the natural orientation of the bulb by processing the 2

(or 3) axis sensor outputs. Each axis output that present a steady Ig force is counted out of the vehicle acceleration processing, as Ig force is the natural vertical force of the earth. In this manner, by elimination of the none-relevant axis data, only the relevant axes are processed.

It is within provision of the invention that the entire control system be implemented in a single chip, at the size of about 4mm x about 4mm x about 2mm or even smaller.

It is within provision of the invention, to provide a light bulb comprising the above mentioned mechanism, such that the bulb provided by the present invention fits all different vehicle types.

Therefore, no special adjustments of the bulb is required.

It is within provision of the invention that a Uni-contact or Dual-contact version be provided. In a preferred embodiment the device support direct replacement of standard 21 W bulb (single

Filament) or 5/2 IW bulb (dual filament).

It is within provision of the invention to provide programmable parameters, such that all the operation parameters are software-programmable including light intensity, de-acceleration threshold, flash frequency, flash duration et cetera.

According to another embodiment of the present invention a complete 3 Dimensional sensor adapted to eliminate different factors that potentially could interrupt the real and accurate calculation of the deceleration value of the vehicle:

The first one is used to calculate the deceleration in the vehicle's direction of movement.

The second one is used to normalize the, vertical gravitation forces (in case the vehicle is not traveling in a planar road). ^'

The third one is used to eliminate, any interruption that might occur during traveling in a 'bumpy road' (e.g., unbuild roads). The second sensor - gravitation normalizing sensor

When the vehicle is driven in a non planar road (e.g., incline or decline), there will be a component of gravitation in the direction of the decelerometer. This will change the reading of the decelerometer from the true vehicle deceleration. The angle at which the vehicle is position can be calculated via conventional devices know in the art (e.g., tilt sensor, inclinometer). By using such a device the angle (and thus the error in light of the angle) can be continuously monitored and thus normalized and removed to obtain the true value of the threshold.

The third sensor

The third sensor is provided in order to eliminate any miscalculation of the acceleration due to the state of the premises.. If the road in which the vehicle is driven is an unbuild road and hence

'bumpy' the system of the present invention provides a mechanism for eliminating such bumpiness.

According to another embodiment of the present invention, the device comprises sensors adapted to sense different parameters that might affect the deceleration calculation. Said parameters can be selected from a group consisting of the road conditions, amount of light (e.g., day/night) , humidity, wetness, the weather or the amount of the road's moisture or any combination thereof.

According to another embodiment of the present invention, the device comprises sensors adapted to sense pressure applied directly or indirect on them. An example of pressure applied on the sensors can be slamming or shutting the rear door. Alternatively, the mechanism can adjust the intensity of light accordingly.

According to another embodiment of the present invention, the device is a feedbacked device.

According to that embodiment, the device comprises a data base to data log the number of times the device had been activated (i.e., the deceleration value was above a certain threshold) vs. time.

In such a way the driver can be feedbacked as to his/her driving behavior.

Alternatively the device can be either wirelessly connected to the PC of said driver (or any other desired professional person, any relative et cetera) so as to data log the behavioral driving of the driver.

According to another embodiment of the present invention, the 'smart' electronic device as provided by the present invention can be designed as a chip. In other words at least a part of the system will be provided on a chip. The chip can be installed inside the bulb, on it, outside it's or coupled to it electrical connections. Alternatively, the chip can be installed in/on/inside an off the shelf LED flashlights.

In the foregoing description, embodiments of the invention, including preferred embodiments, have been presented for the purpose of illustration and description. They are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obvious modifications or variations are possible in light of the above teachings. The embodiments were chosen and described to provide the best illustration of the principals of the invention and its practical application, and to enable one of ordinary skill in the art to utilize the invention in various embodiments and with various modifications as are suited to the particular use contemplated. All such modifications and variations are within the scope of the invention as determined by the appended claims when interpreted in accordance with the breadth they are fairly, legally, and equitably entitled.

Claims

1. A stop-light bulb mountable in a standard rear bulb cluster of a vehicle; said bulb comprising:

(e) at least one controller in electrical communication with said electrical deceleration sensor and said gravitation normalizing sensor, adapted to (i) receive said electrical signal from said electrical deceleration sensor; (H) to calculate said corresponding deceleration value; (Ui) constantly decouple said deceleration value from said gravitation component according to said angle sensed by said gravitation normalizing sensor; and, (iv) to control the light emission of said light-emitting member according to a predetermined protocol if said deceleration value is above a predetermined threshold; wherein said deceleration value is constantly independent and decoupled of said gravitation component by means of said controller and said gravitation normalizing sensor.

2. The bulb according to claim 1, additionally comprising a road condition sensor adapted to sense road conditions selected from a group consisting of road's bumpiness, road's moisture, road's curvature or any combination thereof.

3. The bulb according to claim 1, additionally comprising sensor adapted to sense different . parameters selected from a group consisting of amount of outside light, humidity, weather or any combination thereof.

4. The bulb according to claim 1, wherein said light emission is performed according to parameters selected from a group consisting of intensity, color, graphical patterns or any combination thereof.

5. The bulb according to claim 1, wherein said gravitation normalizing sensor or said electrical deceleration is selected from a group consisting of a micromachined acceleration sensor, a thermal acceleration sensor, a strain gauge acceleration sensor, a resonance acceleration sensor, magnetic induction acceleration sensor, a laser acceleration sensor, surface acoustic wave acceleration sensor, MEMS sensor, tilt sensor, inclinometer or any combination thereof.

6. The bulb according to claim 1, wherein said controller is adapted to provide

7. The bulb according to claim 1, wherein said light-emitting member is selected from a group consisting of a bulb filament, LEDs or any combination thereof.

8. The bulb according to claim 1, wherein said light-emitting member is assembled from a plurality of light emitting diodes; said diodes are controlled by said controller individually.

9. The bulb according to claim 10, wherein said controller is adapted to create predetermined graphical patterns by means of individually activating predetermined diodes in response to said deceleration value.

10. The bulb according to claim 1, additionally comprising a database adapted to data log the behavioral driving of said driver.

11. The bulb according to claim 10, wherein said database is adapted to wirelessly transmit said behavioral driving to a predetermined PC.

12. A stop-light device comprising:

(a) at least one electrical connector electrically connectable to the electrical circuit of a vehicle, adapted to be energized in a response to activation of the brake system of said vehicle by a driver; and, (b) at least one light-emitting member electrically connected to said electrical connector and adapted to emit light in response to energizing said light-emitting member;

(e) at least one controller in electrical communication with said electrical deceleration sensor and said gravitation normalizing sensor, adapted to (i) receive said electrical signal from said electrical deceleration sensor; (H) to calculate said corresponding deceleration value; to (Hi) constantly decouple said deceleration value from said gravitation component according' to said angle sensed by said gravitation normalizing sensor; and, to (iv) control the light emission of said light-emitting member according to a predetermined protocol if said deceleration value is above a predetermined threshold; wherein said deceleration value is constantly independent and decoupled of said gravitation component by means of said controller and said gravitation normalizing sensor.

13. The device according to claim 12, wherein said deceleration sensor is a micromachined accelerometer. . .

14. The device according to claim 12, wherein said controller is adapted to provide

(a) a constant energization of said light-emitting member, if said electrical signal is , below said predetermined threshold; and, _;

15. The device according to claim 12, wherein said light-emitting member is assembled from a plurality of light emitting diodes; said diodes are controlled by said controller individually. . .

16. The device according to claim 15, wherein said controller is adapted to create predetermined graphical patterns, or different colors and intensities by means of individually activating predetermined diodes in response to said deceleration value.

17. The device according to claim 12, wherein said controller is adapted to create predetermined graphic patterns by means of individually activating predetermined diodes in response to said deceleration value.

18. The device according to claim 17, wherein said controller is adapted to provide information corresponding to decelerating status of said vehicle.

19. The device according to claim 17, wherein said information comprises letters, symbols, color schemes and any combination thereof.

20. The device according to claim 17, wherein said device is mountable in an in-car position visually available to the back and/or forward driver.

21. The device according to claim 17, wherein said device is mountable in an out-car position visually available to the back and/or forward driver.

22. The device according to claim 17, additionally comprising a road condition sensor adapted to sense road conditions selected from a group consisting of road's bumpiness, road's moisture, road's curvature or any combination thereof.

23. The device according to claim 17, additionally comprising sensor adapted to sense different parameters selected from a group consisting of amount of outside light, humidity, weather or any combination thereof.

24. The device according to claim 17, additionally comprising a database adapted to data log the behavioral driving of said driver.

25. The device according to claim 24, wherein said database is adapted to wirelessly transmit said behavioral driving to a predetermined PC.

26. The device according to claim 17, wherein said gravitation normalizing sensor or said electrical deceleration is selected from a group consisting of a micromachined acceleration sensor, a thermal acceleration sensor, a strain gauge acceleration sensor, a resonance acceleration sensor, magnetic induction acceleration sensor, a laser acceleration sensor, surface acoustic wave acceleration sensor, MFiMS sensor, tilt sensor, inclinometer or any combination^" thereof.

27. A method of improving vehicle safety, said method comprising the steps of: (a) providing an intelligent stop-light bulb comprising: i. a bulb base placeable into an standard bulb holder, electrically connected to the electrical circuit of said vehicle; said circuit is energized in a response to activation of the brake system of said vehicle by a driver; ii. a light-emitting member electrically . connected to said bulb base and adapted to emit light in response to energizing said light-emitting member; iii. at least one electrical deceleration sensor in electrical communication with said electrical circuit of said vehicle, and adapted to transmit an electrical signal corresponding tb the deceleration value applied to said vehicle; iv. at least one gravitation normalizing sensor adapted to sense the current tilting angle of said vehicle; and, v. at least one controller in electrical communication with said electrical deceleration sensor arid said gravitation normalizing;

(d) transmitting an electrical signal corresponding to the deceleration value applied to said vehicle by means of said electrical deceleration sensor; and,

(e) receiving said electrical signal by means of said controller;

(f) calculating said gravitation component by means of said controller by calculating said angle sensed by said gravitation normalizing sensor;

(g) decoupling said deceleration value from said gravitation component according to said angle sensed by said gravitation normalizing sensor;

28. The method according to claim 27, additionally comprising step of selecting said gravitation normalizing sensor or said electrical deceleration from a group consisting of a micromachined acceleration sensor, a thermal acceleration sensor, a strain gauge acceleration sensor, a resonance acceleration sensor, magnetic induction acceleration sensor, a laser acceleration sensor, surface acoustic wave acceleration sensor, MEMS sensor or any combination thereof.

29. The method according to claim 27, additionally comprising step of providing:

30. The method according to claim 29, wherein said step of providing said time modulated voltage is performed such that the modulation frequency depends on a value of deceleration applied to said vehicle.

31. The method according to claim 29, additionally comprising step of providing said time modulated voltage characterized by increasing in modulation frequency in response to increasing in said value of detected deceleration.

32. The method according to claim 31, wherein said increasing in modulation frequency is performed on a staggered basis in response to elevating predetermined thresholds by said value of detected deceleration.

33. The method according to claim 27, additionally comprising step of real time varying said predetermined threshold according to parameters selected from a group consisting of road's condition, weather, humidity, wetness, amount of day light or any combination thereof.

34. The method according to claim 27, additionally comprising step of verifying said stoplight bulb is activated in response to said electrical signal if said electrical signal is above a predetermined threshold

35. The method of claim 33, additionally comprising step of selecting said road condition sensors from a group consisting of: acceleration sensor, attitude sensor, level sensor.

36. A system for improving vehicle safety, comprising

(a) at least two stop-light bulb, each of which is mountable in a standard rear bulb cluster of a vehicle; each of said stop-light bulb comprises: i. at least one bulb base placeable into an standard bulb holder, electrically connected to the electrical circuit of said vehicle; said circuit is energized in a response to activation of the brake system of said vehicle by a driver; and ii. at least one light-emitting member electrically connected to said bulb base and adapted to emit light in response to energizing said light-emitting member; iii. at least one electrical deceleration sensor in electrical communication with said electrical circuit of said vehicle, and adapted to transmit an electrical signal corresponding to the deceleration value applied to said vehicle; iv. at least one gravitation normalizing sensor adapted to sense the current tilting angle of said vehicle; and, v. at least one controller in electrical communication with said electrical deceleration sensor and said gravitation normalizing sensor, adapted to (i) receive said electrical signal from said electrical deceleration sensor; (H) to calculate said corresponding deceleration value; to (in) constantly decouple said deceleration value from said gravitation component according to said angle sensed by said gravitation normalizing sensor; and, to (iv) control the light emission of said light-emitting member according to a predetermined protocol if said deceleration value is above a predetermined threshold; (b) synchronization system in communication with each of said stop-light bulb; wherein said synchronization system ensures all said stop-light bulb activate when at least one of said stop-light bulb activates.

37. The system according to claim 36, additionally comprising a road condition sensor adapted to sense road conditions selected from a group consisting of road's bumpiness, road's moisture, road's curvature or any combination thereof.

38. The system according to claim 36, additionally comprising sensor adapted to sense different parameters selected from a group consisting of amount of outside light, humidity, weather or any combination thereof.

39. The system according to claim 36, wherein said light emission is performed according to parameters selected from a group consisting of intensity, color, graphical patterns or any combination thereof.

40. The system according to claim 36, wherein said gravitation normalizing sensor or said electrical deceleration is selected from a group consisting of a micromachined acceleration sensor, a thermal acceleration sensor, a strain gauge acceleration sensor, a resonance acceleration sensor, magnetic induction acceleration ^' sensor, a laser acceleration sensor, surface acoustic wave acceleration sensor, MEMS sensor or any combination thereof.

41. The system according to claim 36, wherein said controller is adapted to provide

42. The system according to claim 36, wherein said light-emitting member is selected from a group consisting of a bulb filament, LEDs or any combination thereof.

43. The system according to claim 36, wherein said light-emitting member is assembled from a plurality of light emitting diodes; said diodes are controlled by said controller individually.

44. The system according to claim 36, wherein said controller is adapted to create predetermined graphical patterns by means of individually activating predetermined diodes in response to electrical signals of said sensor.

45. The system according to claim 36, additionally comprising a database adapted to data log the behavioral driving of said driver.

46. The system according to claim 45, wherein said database is adapted to wirelessly transmit said behavioral driving to a predetermined PC.

47. The system according to claim 36, additionally comprising means adapted to verify that both said at least two stop-light bulbs are activated in response to said electrical signal if said electrical signal is above a predetermined threshold.

48. The system according to claim 36, wherein said at least one electrical deceleration sensor, said at least one gravitation normalizing sensor and said at least one controller are designed as a chip.

49. The device according to claim 17, wherein said at least one electrical deceleration sensor, said at least one gravitation normalizing sensor and said at least one controller are designed as a chip.

50. The bulb according to claim 1, wherein said at least one electrical deceleration sensor, said at least one gravitation normalizing sensor and said at least one controller are designed as a chip.