Electroscaps of the power of automotive stop signals on LEDs. NM5403 Device control of car stop signals. Radio components and their possible analogues used in the flashing stop signal diagram with their own hands

In previous publications, the topic of a stop signal with dynamic backlight was already affected, or rather, a stop signal with running lights was mentioned. See the STOP signal running lights. Some people enjoy the usual flashing of stop signals. In the stream, it will attract the views of other participants in the movement. And there is even an advantage of this option - the complexity of the scheme will be sufficiently low. It is about the flashing signal and will be discussed in this article.

So, a simplified flashing stop signal is obviously inferior in the entertainment of using its elder brother, but also make this option is noticeably easier. No humus without good. Meanwhile, there is some point of adjustment in this case, namely the adjustment of the frequency of the flashing LEDs. You can control this using capacitors of different capacities. From words to business - turn to the electrical scheme

The flashing stop signal can be made on the basis of the scheme of the stop signal with running lights already known to us, which was described in previous issues. The scheme is based on the KA561L7 chip, a multivibrator is organized on 2 of its elements. For better quality digital signal At the outlet of the third element of the chip is used as an inverter that plays the role of the separator of analog circuit and multivibrator. As we mentioned above, the fiction frequency directly depends on the capacitance capacitance. Dependence inverse - the higher the capacitance of the capacitor, the slower the flashing occurs. On the other hand, the capacitor with a smaller capacity will provide a higher frequency of blinking. Along with this, the resistor located in the condenser circuit also has some effect on the frequency - through it there is a cycle of recharging a condenser.

Now we will tell you how the strength of the scheme works. The control signal enters the CT816B transistor database. During a positive half-period, the transistor turns into a conductor, passing through itself electricity. Due to this, at the output of the transistor we get much more power than we could get using only chips.

This means that food will be enough to connect the LED circuit. As a fuse, or voltage stabilizer, it is recommended that the chip of the KR142EN 5 B. As is known, in this case, the stabilization of the voltage will be carried out at the level of 5 V. More in the article "How to get 5 volts of 12 volts"

Thus, when power is applied to the circuit, the connected LEDs will blink with the frequency defined by the capacitor and the control chain resistor.

If your regular stop signal is powered from 12 V, then the diagram of the KR142EN 5 b will not be needed. Instead, to simplify, you can connect to the emitter of the transistor as a positive terminal, the negative terminal can classically perform the body. After connecting in this mode, you can leave regular stop signals, without connecting additional LEDs.

Microcircuit - Consider first its analogues. The easiest way to get to the American version of CD4011A "Texas Instruments". A chip made in the USA will be quite difficult, but Chinese options in the market in excess.

The C1 condenser has the following parameters: Current - variable, voltage above 16 V. Resistors should cope with a capacity of 0.25 W at a minimum. LEDs can be set any that satisfy the voltage requirement above 3.3 V. Also important indicator is the color - stop signals must be red.

The universal circuit board will perfectly cope with the role of the foundation of our scheme, you only need to organize the connection of the elements of flexible conductors, which in itself is the most simple way implementation. Also, no customization or adjustment will also be required, it is important only to assemble everything true and preferably tested before commissioning.

The only disadvantage can only be noted the absence of any control on the principle of blinking. Such a scheme ensures the stop of the stop signal from the moment of pressing the brake to its full release. It is logical to assume that it would have to blink 3-4 seconds after pressing, and then shine constantly. IN next scheme We will look at the implementation of this option.

Electrical diagram of blinking stop signal "Option 2".

Such a scheme implements the option of blinking during the first moments of the operation of stop signals, and then the LEDs should shine smoothly, without flicker. The scheme is based on 2 timers based on the NE 555 chip. First, the generated control signal discretely enters the transistor in the same way as the first diagram, and then on its base is formed. constant pressure. In the end, the relay ceases to work and turns into a conductor.

Note that if it is necessary to eliminate the influence of the scheme, you must translate the switch SW1 to position 1-2. However, the transistor and relays will be used after such a switch.

To increase the flashing stop circuit, it is enough to click on the picture, there is also a description and marking of parts.

The following manner may look like a locking stop signal with your own hands, while the scheme is implemented and on a universal circuit board.

Here is a variant of the finished board from the tracks.

From the top side - the side of the splitting of parts.

Options for creating such an intermittent stop signal several. And how the scheme will work, and how the result will differ. At the same time, any of the options are easily implemented independently, both simplicity of electrical schemes and low cost of components will play on the arm.

The asset also can also write down the absence of the use of programmable controllers.

Now it's about you - choose the most suitable option and organize refinement. We wish you that the information obtained will be useful for you, and the result - appropriate expectations!

Stop Scheme Signal KAMAZ is somewhat more complicated than other cars. This is due to the use of multiple sensors that ensure the inclusion of stop signals when the operation of several brake systems. Although the brake system is called KAMAZ, but it is now applied on other cars due to their reliability. Principal electrical circuit All such cars are identical and differs only constructively. The KAMAZ Scheme Scheme signal includes sensors, an intermediate relay, a buzzer and a parking brake test lamp, and of course signal lamps in the rear tractor and trailer lamps. Sensors are installed on brake system circuits in the brake crane area and are triggered when the pressure changes in the circuit. On the recent models As a stop signal sensor, a push-button switch installed under the pedal is used, as on most cars. When the pressure is changed in any of the contours, and in the presence of a push button, when you press the pedal, the sensor contacts are closed and the intermediate relay is combined with a mass of the car.

In this case, the current from the fuse passes through the relay winding, contacts one of the sensors on the car body. Relay contacts are closed and served power on signal lamps in the rear lights. When performing the parking brake, except for signal lamps, the parking brake test lamp begins. This is due to the fact that the interrupter of the parking brake and the control lama get a minus through the parking brake sensor. Since all the sensor is connected to the spool of the intermediate relay, then when you closed any sensor on all sensors, minus appears. In order that the control lamp does not turn on when other sensors are triggered, a diode is turned on to the circuit that prevents the minus to the parking brake sensor wire. During operation, some malfunctions are possible. The most common, for all cars, is when the signal lamps of braking signals are not lit. In this case, it is necessary to check the lamps burn when performing a parking brake or not. If the lamps burn, then the sensor is faulty or cut off the wire from it to the relay. To check, you need to turn off the wire from the sensor and connect it with a mass of the car. If the signal lamps are torn, the sensor is faulty. Otherwise there is a break in the wire. If the lamps are not lit, when setting to the parking brake, it is necessary to check the safety of the fuse, signal lamps and the relay. Faulty items must be replaced. The cause of the malfunction can also be a break of the wire connecting relay with warning lamps. If the signal lamps are lit when the brake pedal is pressed, but do not burn when performing a parking brake, then it is necessary to check the function of the sensor, connecting wire and diode. Start better with a diode check, which is on the board of the signal lamps of the instrument panels, near the parking brake panel. If, when setting to the parking brake on the diode, minus appears, the sensor and the connecting wire are good. Otherwise, it is necessary to turn off the wire from the sensor and connect it with a mass of the car. If the minus does not appear on the diode, then it is necessary to eliminate the cliff in the wire if the sensor appears. Another malfunction when the signal lamps burn constantly. Unlike the previously described, it is characteristic only for the stop of the KAMAZ signal. There may be several reasons. The first is the closure of the positive wire on the warning lamps, in practice it is found if the wiring was melted in the process of closing the plus wire on the mass of the car. The second reason is the imposition of contacts of the signal lamps relay. To check it is enough to remove and put back into the nest this relay. If the relay is configured, a characteristic click will be heard. Faulty relay must be replaced. The third reason may be in the absence of food on the parking brake control lamp and its interrupter relay. In this case, plus through the winding of the signal lamps, the parking brake control lamp that feeds the wire of the control lamp and through one of the consumers receiving power to the same wire falls on a minus. In this case, the circuit closes, and the signal lamps are triggered. To check it is enough to disconnect the feed wire from the control lamp interrupter. The relay should open up and the signal lamps are ground. Possible reasons There may be a fuse malfunction or a wrench. The last reason can be called the connection of any wire from the sensors with a mass of the car. As well as on all cars in the stop signal KAMAZ, it is also possible to burn the fuse of the signal lamps. The troubleshooting depends on the moment when the fuse braves. To search you need to remove the car from the parking brake and let go of the brake pedal. If the fuse is burned immediately when installed, then short circuit We must look under the instrument panel from the fuse to the signal lamps relay. If the fuse breaks down when pressed on the brake pedal, then a short circuit in the switch from the relay to the rear lights or in the trailer outlet.

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A flashing stop signal is used to increase traffic safety and reduce the likelihood of an accident. NM5403 controls the luminescence of car stop lights or motorcycle: When you click on the brake pedal, the lamps work in a pulse mode - several lamp flashes occurs within a few seconds, then the lamps are moving to normal continuous luminescence mode. Drop-bulling stop signals (to blink-blink, flickering) significantly more efficiently attract the attention of other cars drivers and contribute to the prevention of emergency occurrence.

Specifications

Principle of operation

Power on the device enters vd4 protective diode. Next occurs to filter the supply voltage of the RC filter on the elements R10, C6, C7. The device is collected on two timers 555 (DA1 and DA2). The DA1 timer is included according to the simultor scheme, and DA2 is according to the multivibrator scheme. When supplying the supply voltage, the DA2 multivibrator starts. The frequency of its impulses, and, consequently, the frequency of flashes of the stop signals lamps is determined by the elements C4, R6 and R7. R6 retarded resistor can be promptly adjusted to this frequency. Simultaneously with the DA2 multivibrator, the DA1 is turned on. It produces a single impulse with a duration of 0.5 to 3 seconds. The pulse duration depends on the elements C2, R3 and R2. It can be changed using a R2 trimmed resistor. A single pulse produced by DA1 is running for multivibrator DA2. After the end of the pulse at the output 3 of the DA1 timer, a low-level voltage appears, which vd vd2 and the R4 resistor arrives at the DA2 multivibrator C4 condenser, and forcibly sets the voltage to zero on it, thereby prohibiting the further issuance of pulses to output 3 DA2 timer . The pulses from the output 3 of the DA2 timer through the R8 and R9 resistors arrive at the VT1 transistor, the load of which is the relay K1. Switching the signal lamps is carried out by normally closed relay contacts. Elements R1, C1 and VD1 are required to quickly restart the DA1 timer. Thus, when powering with a braking signal switch, the device gives a series of pulses, the frequency of which is defined by the position of the engine R6, and the duration of the pulse work is determined by the position of the R2 engine. After the end of the pulses series, the device goes to normal continuous burning mode of lamps. Closing contacts 1-2 switch SW1 is turned off the pulse combustion mode of stop signals. Closing contacts of the 2-3 Switch switch SW1 is activated in the pulse combustion mode of stop signals. The device can be located, for example, in the car trunk in the immediate vicinity of stop signals.

Design device

The device is made on a printed circuit board from a foil glassstolite with dimensions of 60x40mm, height in the assembled form 25mm. The design provides for the installation of the board in the housing, for this there are assembly holes on the edges of the circuit boards 2.5 mm. For the convenience of connecting the voltage source (from the trace of the brake pedal and car mass) and the loads (lamps of stop signals) on the board are placed under the pin contacts or terminal screw clamps.

Additional Information

The vehicle stop control device is supplied as a set of components, pCB and assembly instructions. therefore make a flashing stop signal do it yourself very simple. NM5403 works equally well with both conventional incandescent lamps and LED.

"In the flashing stop signals, a huge potential for the reduction of accidents is hidden, the head of the analytical service of the German transport agency DEKRA YORG OLGRIM. According to him, the flashing stop signals can significantly reduce the number of collisions with ahead of the car, which accounts for about 20% of all Accident ". Now many models of modern cars are already equipped with flashing stop signals (main or optional).

What will be required for assembly

• Please, please bookmark Related Products: This will help you to fully use the capabilities of the device.

Order assembly

• Described in the instructions.
• Please pay special attention to the quality of soldering. The device has to work in the car and transfer heat and frosts. Use soldering fluxes and disappear each contact well. Tin should be evenly spread around the legs of the components.
• After soldering, we need to rinse with alcohol or other solution for cleaning from flux residues.
• To increase reliability when operating a fee after checking and settings, it is recommended to coat a layer of protective varnish that can be purchased in stores. electronic components. For example, Cramolin Plastik

Questions and answers

• Is it possible to purchase a collected and ready-to-work device NM5403
  • Good day! This device Sold in in the form of a set of components for self-assembly. Assembly is simple and does not cause difficulties.

Somehow, when I noticed in St. Petersburg that a flashing stop signal is ahead of the car. It became interesting, I also decided to make myself a similar stop signal. Prices for similar devices start with 400 rubles.

And just found several variants of the flashing stop signal. Its selection stopped made on the famous Timer NE555.

For the assembly we will need:

Microcircuit - NE555, Diode 1N4007, transistor-IRF540, C1-2 22MKF, C2-10MKF, R1-1K, R2-5K, R3-10K, R4-70K, Male Planck, Contacts.

Schematic diagram of a flashing stop signal

Collected scheme

Assembly

Scheme installed in the stop signal panel

I like to solder on the mounting bar. Yes, it is very tedious, but it does not need to be tired with the board.

When soldering, observe accuracy especially with field Transistor, The legs of the transistor are better to carry out tweezers for the heat sink. Strictly observe the polarity at the time burn the entire scheme. For the safety net, the diagram can be included in the incision of the positive bus.

This is how the signal operation is visible from the side.

Signal notation: 1 - Mounting unit, 2 - switch, 3 - lamps in the rear lights, and - to the "30" generator output

In order to eliminate the overheating of the headlights, you can set the time relay that will turn off the lights if they are burning over 40-60 seconds (time can be changed by the selection of capacitor and resistor). When they are released and the next press, the lanterns are turned on again, so it does not affect the safety of driving. Device concept is shown in the figure.

The scheme is very simple and does not contain expensive or rare components. Connecting three-wire, is one wire for a total minus, and the other two in the rupture of the wire of the brake pedal coming from the contact sensor to the rear lanterns. With the press of the brake pedal, the contacts of the sensor D1.1-D1.2 are closed to the zero state. And at the output parallel to increasing the power of the inverters D1.3 and D1.4 logical unit. The VT1 transistor opens and gives current to the winding of the relay K1, which gives the current to the lamps (they are indicated here H1 and H2).

Capacitor C2 is slowly charged via the R2 resistor. After about 40-60 seconds, the voltage on it reaches the magnitude of the switch trigger Schmitta D1.1-D1.2. At the output of D1.3 and D1.4, the level changes, and the VT1 transistor closes, and the relay turns off the stop lights. In the diagram there is a R1 resistor, the assignment of which may seem strange, because it is turned on parallel to the power source.

This resistor is needed in order for the C2 capacitor quickly discharged after removing the supply voltage (after the brake pedal is released). At the same time, the discharge of the capacitor follows the chain - VD1-R3-R1. The burning time of the lanterns can be changed by the selection of the elements of the C2-R2 chain. The relay K1 is a standard four-contact relay of front-wheelwater vases.

SS lights are a mandatory accessory for each car. However, during the daytime day, especially on a sunny day, their light becomes less bright and noticeable. You can do not cut upgrading and connect to the alarm on braking during the day and overall lights.

When braking in the afternoon in the upgraded scheme, in addition to the previous two light bulbs, dimensional EL1 and EL4 are turned on through the use semiconductor diode. VD2. The purpose of the VD1 diode does not flow from the circuit to the front overall lights.

This scheme will upgrade any brake signal in the car, allowing you to diagnose the main malfunctions with incandescent lamps and inform the driver using the LED on the instrument panel.

With the supply of power at the time of ignition, the right-handing of the C1 condenser and resistance R3 is connected to the plus of the auto network network, the current through the discharged C1 container and the connected parallel resistor R3 follows the resistance R2 to the VD1 diode - resistor R1 and through the LED resistor. The LED is on 5 seconds and smoothly goes out, since the R1-LED chain is a shunting chain R4 K1-helix of the stop signal lamps.

If there is a break of the lamp power circuit or overwrite their spiral LED will begin to burn all the time, since parallel to C1 containers there is a resistor R3, through which the circuit required for burning is not shunted, only the brightness of the LED will be slightly smaller. If at the same time the driver presses the foot on the pedal slower, with a good SA and the fuse, the voltage of the on-board network through the resistance R4 is applied to the R1 and the LED will begin to burn significantly brighter.

When you press the brake pedal with good spirals and the circuit, the relay K1 will work and its contacts are drawn by the R1 resistor - the LED and it will not burn. Also, through the relay, the relay and resistor R2 capacitor is additionally charged and the relay is eliminated by flashing in the glow during the release of contacts. For proper setting The relay during the brave of at least one lamp should not work and when the brake pedal is pressed to the brake pedal, the LED1 LED should be lit.

When you click on the brake pedal, the circuit input enters + 12V. From its output, short pulse sequences are formed to flash light bulbs. Adjusting the capacitor capacitor C1 or the resistance R1 can be changed the amount of flashes and a pause between them, and the parameters of the circuit C2 and R2 adjust the flashes.

Resistance R3 and R4 are necessary for a reliable discharge of capacitors when turned off.

When you press the brake pedal, the lamp stop signals start working in pulse mode (several bright lamp flashes occurs within 2-3 seconds), and then they go to normal operation of continuous luminescence. Those, when the lights are triggered, the stop signals are much stronger than other drivers.

C1, C7 - 0.1 μF; C2, C6 47 μF - 25 volts; C3, C5 - 0.01 μF; C4 4.7 μF / 25 V; DA1, DA2 NE555, timer; K1 relay BS-115C, 12 b / 12 A; R1 - 100 com; R2 47 com, trim resistance; R3, R7, R9 - 10 com; R4 - 200 Ohm; R5, R8 - 1 com; R6 22 com, trimming resistor; R10 10 ohms; VD1 ... VD3; 1N4148; VD4 1N4007; VT1 BD136 in Corps TO-126

The design is assembled on two microchrolers timers 555. DA1 is enabled according to the simultant scheme, and the DA2 multivibrator. When the power voltage is turned on, the DA2 multivibrator starts. The frequency of the pulses, and, consequently, the frequency of the flashes of the lamps is set by the components C4, R6 and R7. R6 rapid resistance can be changed this frequency. Simultaneously with the DA2 multivibrator, the DA1 is triggered. It generates a single impulse with a duration of 0.5 to 3 seconds. The pulse duration is determined by the components C2, R3 and R2. It can be adjusted using trimmed resistance R2. Single pulse generated by DA1 is the start for DA2. After the pulse at the end of the DA1 microsite output, a low-level voltage is set to the VD2 diode and the resistance R4 arrives at the C4 DA2 tank and forcibly sets the voltage, tend to zero, thereby blocking the further generation of pulses on the third output of the DA2 chip. Pulses from this output through R8 and R9 resistors follow bipolar transistor VT1, in the collector chain of which the relay K1 is connected. Switching signal lamps occurs normally closed contacts. Components R1, C1 and VD1 are required to quickly restart the 555 series timer.