Security systems that are equipped modern carsare divided into two main categories - active and passive. And everything began with installations, which are now one of the main security tools. Belong belts to. The second most passive means are airbags.
They are part of the SRS system (Supplemental Restraint System - additional system Holding), which includes still a number of devices and mechanisms.
Initially, the pillows were positioned as an alternative to belts that were not very particularly convenient to use. But practice has shown that only the integrated use of these two means provides maximum trauma.
Belts are now much more convenient in use, they provide good fixation of the body, but they did not refuse the pillows. And if they were previously installed only for premium cars, now they are on cars of the budget segment. Yes, and the number of pillows is only increasing.
Basic components
The airbag system includes three main components:
- Sensors hit
- Control block
- Gas generators
More modern systems include additional sensors and mechanisms that make certain adjustments to the operation of the security device.
Sensors hit
Shock sensors - elements on which the operation of the entire system depends. It is they define that a collision occurred, so that the pillows are triggered. At first, only front sensors were used. The number of pillows early was not large and in their task was to increase injuries in front of the front clashes. Now many cars are equipped with side devices, therefore, the number of sensors has increased.
Example Location SRS System Sensors
The work of the entire system is built in such a way that only the necessary pillows are triggered during accidents, and not all at once. And for this it is necessary to determine the stream force, its direction, character. This ensures sensors installed in different parts of the body - in front of, doors, racks.
Traditional is the electromechanical type sensors. They are quite simple in design, but it is quite effective. The main elements of such a sensor are the ball and spring of a certain rigidity. It works like this: when he hit, the inertia makes shifted the ball, overcoming the spring force, the contacts and the impulse from the sensor goes to the control unit.
Electromechanical view of the sensor with a ribbon spring
It is worth noting that the rigidity of the spring is significant. This eliminates false responses of the system, for example, when emergency braking, rustling with an obstacle. So, when a collision while driving at a low speed (up to 20 km / h), the pillow will not work, since the strength of the inertia will be simply not enough to overcome the force of the spring.
In addition to electromechanical sensors, cars are used and electronic speciesThe main element of which is the acceleration sensor (condenser, inertial, pressure). Also in the design of the electronic elements includes a signal processing unit from the acceleration sensor.
Device inertial sensor
The principle of operation of the capacitor acceleration sensor is reduced to a change in capacity by offsetting the plates. And this is achieved by separating the plates of the condenser and consolidate them on different bases, one of which is fixed, the second - movable. When you hit, the same inertia strength shifts the movable base with plates relatively fixed. As a result, the capacitance of the condenser sensor changes. This fixes the processing unit, the data obtained with the tables and on the basis of this generates a signal to the control unit.
Condenser acceleration sensor
For this principle, other types of sensors work, the only difference is reduced to their device. All of them by inertia change any parameters, which is the basis for generating a signal to the processing unit.
Note that the configuration of the shock sensors is carried out on the basis of their installation location. So, the side elements are usually more sensitive than the frontal.
To detect the impact to the door area, sensors can be installed, which fix the change in the atmospheric pressure in the doors of the car. They are piezoelectric or capacitive. The first species is based on a piezoelectric effect, and the second on the principle of the condenser sensor.
Shock Sensors Fixing Pressure Change
Also taken into account the speed of operation of each type of sensor, therefore several types of them can be installed in the car. For example, pressure sensors are distinguished by high speed, so they are often installed on the sides (in the doors, racks).
The main advantage of electronic sensors is to determine the character of the strike - forces, directions. This is achieved by the laid output tab data into the processing unit.
Control block
The control unit receives information from the shock sensors and already based on their signals to the required pillows. In fact, it is a distributor guides a signal from the sensor to a specific pillow. But since modern system It often includes additional funds, this unit processes information and from them, and also gives commands to respond to certain mechanisms.
The control unit participates in the diagnosis of the system. After starting the engine, it sends control signals to actuators, determining the integrity of the electrical circuit and the state of the working elements. For example, if there was a circuit break, or the pillows were previously worked, the block will determine it, and on dashboard A warning lamp will light up, indicating that there has been a problem in the security system.
Note that "bypassing" the diagnostic mode is easy than motorists often use, in the machines of which pillows are faulty or worked.
Gas generator
The main component of this system is actuating mechanism - gas generator. Its task includes the generation of large amounts of gas in a short time, which is then filled by the pillow itself.
The gas generator includes several component elements - Pyriculture, the charge of a substance that eats gas and directly the pillow itself.
Gas generator in the steering wheel
The pyropatron is designed to ignite the charge. It can do it in two ways - the melting of the wire placed in the combustion chamber, or at the expense of the capsule, creating the front of the flame in the chamber with the charge. Everything is simple - the electrical signal from the control unit is supplied to the sinkatron, which leads to the melting of the wiring or ignition of the capsule.
The gas generator combustion chamber is filled with a substance, which is capable of completely burning in the shortest possible time, having allocated a large amount of gas, safe for humans. As such a substance, sodium azide is usually used (which, by the way, is poisonous). But in the process of combustion, it disintegrates on non-hazardous substances - nitrogen (45% of the total), water, carbon dioxide, solid particles.
It is worth noting that the sodium azide is completely combined very quickly (30-50 milliseconds depending on the amount of substance), while the combustion is controlled, and not explosive.
The resulting gas on special channels comes out of the gas generator and falls into the tissue bag. Before that, it passes the filtering through a special metallic filter, which removes solid particles, and also cools the gas.
Hybrid gas generator with charging and gas
Another type is a hybrid gas generator with a basic substance in which gas under pressure (argon - 98%, helium - 2%). It also has a sinkatron and a small amount of pushing charge. When it triggered it, the gas supply channel in the pillow occurs. Hybrid gas generators differ in the design of the channel opening, due to the shift of the piston at the time of operation or destruction of the washer (membrane). There are other more rare structures.
Hybrid gas gas generator under pressure
The bag is usually made from nylon. For ease of deployment when pumping, the surface of the tissue is covered with a talc, starch. In the pillow necessarily there is perforation. The holes made in the bag are designed to be blown after the triggering, and also fast (1-2 seconds). This eliminates the suffocation and the closure of passengers in the car.
Airbag triggering
Often on modern cars The airbag device includes a two-chamber gas generator, in which two pyropatrons and two combustion chambers. The peculiarity of such a generator consists in the consistent involvement of pyropathrons.
When you hit, first the charge is ignited in the main chamber. In this case, the filling of the pillow occurs by 80%. That is, the bag turns out softer than with full fill, which reduces injury when contacting a person with a pillow. After a certain period of time, the pyropatron of the auxiliary chamber is triggered, and the pillow is doubled with gas, but after it accepted the body blow.
Additional means
The SRS system device additionally may include a passenger presence sensor, a mechanism for emergency door glass. The control unit can also be charged with the work of belts pretensioners (with sopatrons).
The passenger presence sensor is needed that the control unit does not use the front passenger pillow if there is no one on the side seat. Previously, the shutdown of this pillow was performed manually, which was not entirely convenient. The sensor setting solved the problem with the forgotten included or disconnected passenger pillow.
Passenger armchair device
The mechanism of emergency lowering windows is designed to eliminate the pneumatic man. With closed windows, the deployment of the pillows leads to a rapid decrease in the volume of the cabin (bags are filled). As a result, the air pressure in the cabin increases sharply and is formed by pneumatic progress, and quite powerful and passengers can easily get damage to the ears. The mechanism of emergency lowering of the side glasses eliminates the increase in the pressure and the appearance of the pneumatic man.
Many auto seat belts are now completed by pretensioners, which provide short-term belt tension at an accident, providing body fixation and eliminating its inertial movement. Moreover, pretensioners are completed with sopatrons, the operation of which is carried out from the pulse supplied from the airbag control unit.
Principle of operation
Knowing the design and functioning of all components, it is easy to understand the principle of operation of the airbag: when a collision is collided, the sensors capture the blow, and the signal is sent to the control unit. That in turn redirects the pulse to the desired gas generator. At the same time, the block determines the presence of a passenger and makes a decision, whether the passenger pillow uses, and also uses the Pyrinatrons of the pretensioners (if any) and includes the mechanism of lowering the glasses (if any).
The signal received from the block on the gas generator leads to the triggering of a pyropatron and charge chemical agent Lights up. The gas released enters the bag, he unfolds and follows immediately descends due to perforation.
SRS AUDI A3 System System
Note that their disposal is the main disadvantage of the pillows. That is, they work only once, after which they need to be changed. And the replacement is very expensive, so the car car owners on which they worked, and use the "deceiving" so that the system is normally diagnosed when the engine is started and does not bother the constantly burning lighting lamp.
Views
On modern cars, various types of airbags are used. The main ones are:
- Frontal driver and passenger (installed in the steering wheel and front panel);
- Side (mounted in the backrest of the front seats);
- Head, they are curtains (placed in side racks or roofs).
These types of airbags are installed on a variety of models, including budget options. Frontal are designed to reduce injury during frontal blows, two other types - with lateral. And the side protect the torso, and the curtains are head. It is noteworthy that the front and side pillows are usually intended only to ensure the drill safety of the driver and the front passenger. But the curtains can be installed in the back of the cabin to reduce the injury of passengers in the backseat.
There are other types of airbags, but they meet much less often. These include knee and central. The first are located under the front panel and ensure the protection of the legs. The central pillow pops up between the front seats and is aimed at excluding injuries when the driver and the passenger collides.
Airbags turned out to be really effective, so systems are now actively developed, which are aimed at reducing injuries of pedestrians when colliding with a car. To do this, in the front of the car (in the bumper and in front of the windshield), pillows are installed, mitigating a pedestrian impact force about the structural elements of the car.
AUTOLEEK.In many modern cars there is a SRS system, but what it is and which means this abbreviation is known not to many, so in this article we will try to figure out what SRS is in the car and what to do if the SRS indicator on the dashboard lights up.
Decoding what SRS system is in the car
SRS (Reduction from Supplementary Restraint System) - This is a security system for the driver and passengers in a car that works in emergency Situation (with a frontal or lateral collision, a car with a moving or static object).
The SRS system includes such components to ensure the safety of the driver and passengers:
- SRS system module;
- Special sensors and sensors tracking vehicle speed, fixing the moment of impact when a collision, position of people in the cabin of cars, etc.;
- Front and side airbags;
- Special safety belt attributes.
To the note: SRS security system in the car helps to keep health, and sometimes the life of the driver and passengers with accidents, while the system works at the speed of the vehicle more than 50 km / h about the windows and side shocks.
It is also worth not to forget that SRS will not work when a collision with soft objects (for example, when entering a snowy snowdrift), as well as when you hit the back (for example, if another car has crashed in your back).
What if the SRS light is on on the dashboard?
Making conclusions from the above immediately becomes clear the fact that it is necessary to monitor the state of the SRS system (SRS) in the machine, since your safety depends on it.
If an error starts appears (the signal is triggered on the dashboard with the SRS icon), then it is better to quickly turn to specialists in the car service so that they diagnose and eliminate this problem.
SRS security system is good because it does not need to be serviced often, just once every 9-10 years spend its full diagnostics to make sure it good jobBut it is important not to forget that airbags and sopatrons to them are disposable and case of their response in an emergency, their complete replacement is necessary.
In conclusion, it can be noted that knowing what SRS means in a car and how important this system is important, in the future you will be attentive to monitor its condition. Your feedback I. useful advice On the topic, there is SRS in the car, we leave in the comments to the article and share it in social networks if it was useful to you.
Airbag in literal translation from English - air bag, but in Russian for the system passive security SRS consisting of a plurality of components fixed the name airbag.
Sress SRS - Supplemental Restraint System in the literal translation with of English language Additional retention system consists of a set various devices, mechanisms, electronic sensors and sensors. Any airbag system consists of anterior and side impact sensors, SRS control unit, piecopathroys and gas generators. The operation of all sensors and devices is interconnected with each other. It is important that not all devices work at the same time at the same time, but only the necessary pillows and belts. Sensors located in different parts of the car body fix the blow, the direction of impact, its force, the contacts of the sensors are closed and the electronic pulses from the sensor are coming to the control unit.
The SRS control unit receives information from the shock sensors and sends electrical signals to the trigger of various actuators: pneumatic feeders, sicoparatrons of binding seat belts. For example, a airbag works along with a seat belt. Reducing the likelihood of injuries to the driver and front passenger on any part of the car body. In many models of cars, the pillow will not work if the passenger or driver cannot be fastened. But recently, some drivers are extremely popular with various security locks. Most often they are bought when it is too lazy to fasten, and the permanent buzzer of the alarm not fastened safety belts is bored with its own peak. Operating a car equipped with Airbag pillows with a non-fastened driver or a passenger is prohibited. If an accident occurs during frontal impact, the driver or the passenger can get a blow to the safety pillow much more than about the dashboard. The speed of the drop-down airbag can reach 300km / hour. The maximum safety and efficacy of occasional safety airbags is possible only provided that the driver and front passenger are fastened by seat belts.
The speed of the drop-down airbag can reach 300km / hour
The SRS control unit besides ensuring safety during the movement, the function of self-diagnosis of the security system also performs. When the car engine is started, the SRS block diagnoses the integrity of the actuators, the serviceability of airbags, the integrity of electrical circuits and elements. If there is no contact in the safety belt connector, there was an electrical inspection, the airbag previously worked or simply removed on the dashboard lights the indicator light bulb, a warning driver about the AIRBAG.
The main reasons why the Airbag indicator can catch fire on the dashboard:
- violation of the integrity of one of the elements of the system (sensor, device, mechanism)
- lack of signal in electrociping system
- Disabled or bad contact in one of the connectors
- damage to wiring as a result of short circuit
- damage to the shock sensors in the door or in the car body
- blunt fuse
- zeroing the memory of the SRS block when trying to reflash after an accident
Security systems that are equipped with modern cars are divided into two main categories - active and passive. And everything began with the installation of seat belts, which are now one of the main security tools. Belongs to passive security systems. The second most passive means are airbags.
They are part of the SRS system (Supplemental Restraint System - an additional retention system), which includes a number of devices and mechanisms.
Initially, the pillows were positioned as an alternative to belts that were not very particularly convenient to use. But practice has shown that only the integrated use of these two means provides maximum trauma.
Belts are now much more convenient in use, they provide good fixation of the body, but they did not refuse the pillows. And if they were previously installed only for premium cars, now they are on cars of the budget segment. Yes, and the number of pillows is only increasing.
Basic components
The airbag system includes three main components:
- Sensors hit
- Control block
- Gas generators
More modern systems include additional sensors and mechanisms that make certain adjustments to the operation of the security device.
Sensors hit
Shock sensors - elements on which the operation of the entire system depends. It is they define that a collision occurred, so that the pillows are triggered. At first, only front sensors were used. The number of pillows early was not large and in their task was to increase injuries in front of the front clashes. Now many cars are equipped with side devices, therefore, the number of sensors has increased.
The work of the entire system is built in such a way that only the necessary pillows are triggered during accidents, and not all at once. And for this it is necessary to determine the stream force, its direction, character. This ensures sensors installed in different parts of the body - in front of, doors, racks.
Traditional is the electromechanical type sensors. They are quite simple in design, but it is quite effective. The main elements of such a sensor are the ball and spring of a certain rigidity. It works like this: when he hit, the inertia makes shifted the ball, overcoming the spring force, the contacts and the impulse from the sensor goes to the control unit.
It is worth noting that the rigidity of the spring is significant. This eliminates false responses of the system, for example, with emergency braking, a non-stroke with an obstacle. So, when a collision while driving at a low speed (up to 20 km / h), the pillow will not work, since the strength of the inertia will be simply not enough to overcome the force of the spring.
In addition to electromechanical sensors, electronic species are used on auto, the main element of which is the acceleration sensor (condenser, inertial pressure). Also in the design of the electronic elements includes a signal processing unit from the acceleration sensor.
The principle of operation of the capacitor acceleration sensor is reduced to a change in capacity by offsetting the plates. And this is achieved by separating the plates of the condenser and consolidate them on different bases, one of which is fixed, the second - movable. When you hit, the same inertia strength shifts the movable base with plates relatively fixed. As a result, the capacitance of the condenser sensor changes. This fixes the processing unit, the data obtained with the tables and on the basis of this generates a signal to the control unit.
For this principle, other types of sensors work, the only difference is reduced to their device. All of them by inertia change any parameters, which is the basis for generating a signal to the processing unit.
Note that the configuration of the shock sensors is carried out on the basis of their installation location. So, the side elements are usually more sensitive than the frontal.
To detect the impact to the door area, sensors can be installed, which fix the change in the atmospheric pressure in the doors of the car. They are piezoelectric or capacitive. The first species is based on a piezoelectric effect, and the second on the principle of the condenser sensor.
Also taken into account the speed of operation of each type of sensor, therefore several types of them can be installed in the car. For example, pressure sensors are distinguished by high speed, so they are often installed on the sides (in the doors, racks).
The main advantage of electronic sensors is to determine the character of the strike - forces, directions. This is achieved by the laid output tab data into the processing unit.
Control block
The control unit receives information from the shock sensors and already based on their signals to the required pillows. In fact, it is a distributor guides a signal from the sensor to a specific pillow. But since the modern system often includes additional funds, then this unit processes information and from them, and also gives commands to respond to certain mechanisms.
The control unit participates in the diagnosis of the system. After starting the engine, it sends control signals to actuators, determining the integrity of the electrical circuit and the state of the working elements. For example, if there was a circuit break, or the pillows were previously already worked, the block will determine this, and the test lamp will light up on the dashboard, indicating that there is a problem in the security system.
Note that "bypassing" the diagnostic mode is easy than motorists often use, in the machines of which pillows are faulty or worked.
Gas generator
The main component of this system is the actuator - the gas generator. Its task includes the generation of large amounts of gas in a short time, which is then filled by the pillow itself.
The gas generator includes several component elements - a pyropathron, a charge of a substance that eats gas and directly the pillow itself.
The pyropatron is designed to ignite the charge. It can do it in two ways - the melting of the wire placed in the combustion chamber, or at the expense of the capsule, creating the front of the flame in the chamber with the charge. Everything is simple - the electrical signal from the control unit is supplied to the sinkatron, which leads to the melting of the wiring or ignition of the capsule.
The gas generator combustion chamber is filled with a substance, which is capable of completely burning in the shortest possible time, having allocated a large amount of gas, safe for humans. As such a substance, sodium azide is usually used (which, by the way, is poisonous). But in the process of combustion, it disintegrates on non-hazardous substances - nitrogen (45% of the total), water, carbon dioxide, solid particles.
It is worth noting that the sodium azide is completely combined very quickly (30-50 milliseconds depending on the amount of substance), while the combustion is controlled, and not explosive.
The resulting gas on special channels comes out of the gas generator and falls into the tissue bag. Before that, it passes the filtering through a special metallic filter, which removes solid particles, and also cools the gas.
Another type is a hybrid gas generator with a basic substance in which gas under pressure (argon - 98%, helium - 2%). It also has a sinkatron and a small amount of pushing charge. When it triggered it, the gas supply channel in the pillow occurs. Hybrid gas generators differ in the design of the channel opening, due to the shift of the piston at the time of operation or destruction of the washer (membrane). There are other more rare structures.
The bag is usually made from nylon. For ease of deployment when pumping, the surface of the tissue is covered with a talc, starch. In the pillow necessarily there is perforation. The holes made in the bag are designed to be blown after the triggering, and also fast (1-2 seconds). This eliminates the suffocation and the closure of passengers in the car.
Often on modern auto airbag, the airbag device includes a two-chamber gas generator, in which two sopatrons and two combustion chambers. The peculiarity of such a generator consists in the consistent involvement of pyropathrons.
When you hit, first the charge is ignited in the main chamber. In this case, the filling of the pillow occurs by 80%. That is, the bag turns out softer than with full fill, which reduces injury when contacting a person with a pillow. After a certain period of time, the pyropatron of the auxiliary chamber is triggered, and the pillow is doubled with gas, but after it accepted the body blow.
Additional means
The SRS system device additionally may include a passenger presence sensor, a mechanism for emergency door glass. The control unit can also be charged with the work of belts pretensioners (with sopatrons).
The passenger presence sensor is needed that the control unit does not use the front passenger pillow if there is no one on the side seat. Previously, the shutdown of this pillow was performed manually, which was not entirely convenient. The sensor setting solved the problem with the forgotten included or disconnected passenger pillow.
The mechanism of emergency lowering windows is designed to eliminate the pneumatic man. With closed windows, the deployment of the pillows leads to a rapid decrease in the volume of the cabin (bags are filled). As a result, the air pressure in the cabin increases sharply and is formed by pneumatic progress, and quite powerful and passengers can easily get damage to the ears. The mechanism of emergency lowering of the side glasses eliminates the increase in the pressure and the appearance of the pneumatic man.
Many auto seat belts are now completed by pretensioners, which provide short-term belt tension at an accident, providing body fixation and eliminating its inertial movement. Moreover, pretensioners are completed with sopatrons, the operation of which is carried out from the pulse supplied from the airbag control unit.
Principle of operation
Knowing the design and functioning of all components, it is easy to understand the principle of operation of the airbag: when a collision is collided, the sensors capture the blow, and the signal is sent to the control unit. That in turn redirects the pulse to the desired gas generator. At the same time, the block determines the presence of a passenger and makes a decision, whether the passenger pillow uses, and also uses the Pyrinatrons of the pretensioners (if any) and includes the mechanism of lowering the glasses (if any).
The signal received from the block on the gas generator leads to the triggering of the pyropatron and the chemical charge lights up. The gas released enters the bag, he unfolds and follows immediately descends due to perforation.
Note that their disposal is the main disadvantage of the pillows. That is, they work only once, after which they need to be changed. And the replacement is very expensive, so the car car owners on which they worked, and use the "deceiving" so that the system is normally diagnosed when the engine is started and does not bother the constantly burning lighting lamp.
Views
On modern cars, various types of airbags are used. The main ones are:
- Frontal driver and passenger (installed in the steering wheel and front panel);
- Side (mounted in the backrest of the front seats);
- Head, they are curtains (placed in side racks or roofs).
These types of airbags are installed on a variety of models, including budget options. Frontal are designed to reduce injury during frontal blows, two other types - with lateral. And the side protect the torso, and the curtains are head. It is noteworthy that the front and side pillows are usually intended only to ensure the drill safety of the driver and the front passenger. But the curtains can be installed in the back of the cabin to reduce the injury of passengers in the backseat.
There are other types of airbags, but they meet much less often. These include knee and central. The first are located under the front panel and ensure the protection of the legs. The central pillow pops up between the front seats and is aimed at excluding injuries when the driver and the passenger collides.
Airbags turned out to be really effective, so systems are now actively developed, which are aimed at reducing injuries of pedestrians when colliding with a car. To do this, in the front of the car (in the bumper and in front of the windshield), pillows are installed, mitigating a pedestrian impact force about the structural elements of the car.
Decoding what SRS system is in the car
SRS (Reduction from Supplementary Restraint System) - This is a security system for the driver and passengers in a car that works in an emergency situation (with a frontal or lateral collision, a car with a moving or static object).
The SRS system includes such components to ensure the safety of the driver and passengers:
- SRS system module;
- Special sensors and sensors tracking vehicle speed, fixing the moment of impact when a collision, position of people in the cabin of cars, etc.;
- Front and side airbags;
- Special safety belt attributes.
To the note: SRS security system in the car helps to keep health, and sometimes the life of the driver and passengers with accidents, while the system works at the speed of the vehicle more than 50 km / h about the windows and side shocks.
It is also worth not to forget that SRS will not work when a collision with soft objects (for example, when entering a snowy snowdrift), as well as when you hit the back (for example, if another car has crashed in your back).
What if the SRS light is on on the dashboard?
Making conclusions from the above immediately becomes clear the fact that it is necessary to monitor the state of the SRS system (SRS) in the machine, since your safety depends on it.
If an error starts appears (the signal is triggered on the dashboard with the SRS icon), then it is better to quickly turn to specialists in the car service so that they diagnose and eliminate this problem.
SRS safety system is good because it does not need to be serviced often, just once every 9-10 years spend its complete diagnostics to make sure in its serviceable work, but it is important not to forget that airbags and sickness to them - disposable and case of their triggering In an emergency, their complete replacement is needed.
In conclusion, it can be noted that knowing what SRS means in a car and how important this system is important, in the future you will be attentive to monitor its condition. Your feedback and useful tips on the topic, what SRS is in the car, we leave in the comments to the article and share it in social networks if it was useful to you.
Getting acquainted with the characteristics of the car, often in the list of options you can find the abbreviation SRS. Only a few drivers can boast that they know what this system is this. After reading this article to the end, you can also give a detailed answer to the question: "What is SRS in the car."
SRS (from English Supplementary Restraint System - Additional Holding System) - provides protection of the driver and passengers with a frontal collision with a static or moving subject.
The main task of SRS is minimizing the driver's injuries and passengers at a traffic accident. Airbags and seat belt pretensioners are triggered simultaneously in order to prevent the drivers and passenger to strike, windshield Or others who are in the cabin of the car, solid items. To implement this, the system analyzes incoming collision pulse signals, evaluates the force of impact and decides whether airbags and / or seat belt pretensioners. In this case, seat belt pretensioners can be activated both with inflatable airbags and without them.
Inflatable airbags are designed in such a way that they are activated only in the case of a frontal or lateral impact, if the blow fell back, then no tensioning device belts or inflatable airbags will work. SRS will not be activated and in the case of frontal collision At low speed or when hit with soft objects (bushes, for example).
The operation of the SRS system is always controlled by a microprocessor in the sensor module. If an error is detected in operation, the character and location of the malfunction is fixed in the memory, and the SRS warning light lights up on the dashboard. In this case, we advise you to immediately go to a hundred, where the wizards will help eliminate breakdown.
SRS system is one of those that may be able to save your life in case of an accident. Therefore, in no case ignore the signals about its malfunction. Follow the elementary recommendations for the operation of the system. In particular, do not overheat the system (SRS does not tolerate temperatures above 90 degrees), And after 10 years of the car service, we will not extend the SRS system, including electronics, pillows, and a seatbelt mechanism, in a certified workshop.
Keep the SRS system in good condition, but let you never need to bring it into activity!
