CN102109583B - Dummy load system for integrated LED (Light Emitting Diode) steering lamp - Google Patents

Abstract

An intelligent dummy load system integrating LED turn signals, including a turn switch, a pair of smart dummy load control circuits and a set of turn lights; the output ends of the turn switch are respectively connected to the input ends of a pair of smart dummy load control circuits, The output terminals of the intelligent dummy load control circuit are respectively connected with a group of turning lights, and the steering switch, a pair of intelligent dummy load control circuits and a group of turning lights are respectively connected with the automobile power supply. In the present invention, one dummy load manages two left and right turn signals, that is, the whole vehicle only needs two dummy loads, which saves half of the space, saves components such as high-power resistors and large heat dissipation structural parts, and reduces weight; the structure of the present invention The invention is simple, low in cost, small in volume, convenient in manufacture and easy in popularization and application.

Description

A dummy load system integrating LED turn signals

technical field

The invention relates to a dummy load, in particular to a dummy load system integrating LED turn signals.

Background technique

In recent years, more and more LED signal lamps have been used in the automotive field. LED lamps have a series of advantages such as energy saving and longevity, but not many are used in automotive turn signals. Because automotive LED steering lamps must be equipped with a dummy load to meet the detection system of the bulb.

Each vehicle needs four dummy loads, namely front left, rear left, front right and rear right. Each turn signal requires a dummy load. When turning left, the two dummy loads on the left work, and the two dummy loads on the right are empty, which greatly wastes components, costs too much, occupies a large volume, and increases the weight accordingly.

At present, a dummy load circuit system of the prior art, the dummy load circuit system includes: a vehicle voltage source, a light-emitting unit (which is composed of a plurality of light-emitting diodes electrically connected) and is electrically connected to the vehicle voltage source, and detects The circuit is electrically connected to the voltage source and the light-emitting unit, and is used to detect and judge whether the light-emitting unit has an abnormal state. The dummy load circuit includes at least one tungsten wire component and a matching circuit connected in series with the tungsten wire component. The dummy load circuit is connected in parallel with the light emitting unit and electrically connected with the voltage source. The structure of the dummy load circuit system in the prior art is relatively complicated, the cost is high, and the volume is large, so it is not suitable for the turning lights of vehicles.

In view of the above problems, the present invention discloses a dummy load system integrating LED turn signals. It has the technical features as described below to solve the existing problems.

Contents of the invention

The object of the present invention is to provide a dummy load system integrating LED turn signal, which can make the LED lamp and dummy load simulate the performance of the light bulb, so as to match with the current detector of the turn signal of the car and make the metronome work normally.

The purpose of a dummy load system integrating LED turn signals in the present invention is achieved by the following technical solutions: a dummy load system integrating LED turn signals, comprising:

A steering switch, the steering switch is externally connected to the automobile power supply; the steering switch is an integrated circuit including a manual steering switch, a steering bulb metronome and a steering bulb current detector.

A pair of dummy load control circuits, the pair of dummy load control circuits include a headlight dummy load control circuit and a rear light dummy load control circuit.

The headlight dummy load control circuit includes a first current detection control module, a second current detection control module and a headlight dummy load circuit. The rear light dummy load control circuit includes a third current detection control module, a fourth current detection control module and a rear light dummy load circuit.

And a set of turning lights, the set of turning lights include a first turning light, a second turning light, a third turning light and a fourth turning light.

The output terminals of the steering switch are respectively connected in parallel with the input terminals of the first current detection control module, the second current detection control module, the third current detection control module and the fourth current detection control module, and the output terminals of the steering switch are respectively It is connected to the headlight dummy load circuit and the rear light dummy load circuit, the first output port of the first current detection control module is connected to the positive pole of the first turn signal lamp, the negative pole of the first turn signal lamp is connected to the car power supply externally, and the second current detection control module The first output port of the first output port is connected to the positive pole of the second turn signal lamp, the negative pole of the second turn signal lamp is externally connected to the negative pole of the vehicle power supply, the second output port of the first current detection control module and the second output port of the second current detection control module are connected to the second output port of the second current detection control module. The input ends of the headlight dummy load circuit are connected in parallel, and the output end of the headlight dummy load circuit is connected externally to the negative pole of the automobile power supply.

The first output port of the third current detection control module is connected to the anode of the third turn signal lamp, the negative electrode of the third turn signal lamp is connected to the automobile power supply, and the first output port of the fourth current detection control module is connected to the anode of the fourth turn signal lamp. The positive pole is connected, the negative pole of the fourth steering lamp is externally connected to the negative pole of the automobile power supply, the second output port of the third current detection control module and the second output port of the fourth current detection control module are connected in parallel with the input end of the rear light dummy load circuit, The output end of the rear light dummy load circuit is externally connected to the negative pole of the car power supply.

The above-mentioned dummy load system integrating LED turn signal, wherein, the headlight dummy load circuit includes a headlight switch and a headlight dummy load; the switch output terminals of the first current detection control module and the second current detection control module respectively connected to the input end of the front light switch, the first current detection control module and the second current detection control module transmit the switch control signal to the front light switch, and the first current detection control module and the second current detection control module are used for Control the opening and closing of the headlight switch, the output end of the headlight switch is connected to one end of the headlight dummy load, and the other end of the headlight dummy load is grounded.

The above-mentioned dummy load system of integrated LED turn signal, wherein, the rear light dummy load control circuit includes a rear light switch and a rear light dummy load; the switch output of the third current detection control module and the fourth current detection control module terminals are respectively connected to the input ends of the rear light switch, the third current detection control module and the fourth current detection control module transmit switch control signals to the rear light switch, and the third current detection control module and the fourth current detection control module are used for To control the opening and closing of the rear light switch, the output terminal of the rear light switch is connected to one end of the rear light dummy load, and the other end of the rear light dummy load is connected to the negative pole of the car power supply.

In the above-mentioned dummy load system integrating LED turning lights, the headlight dummy load is a resistive load, and the resistive load is used to increase the current detected by the turning bulb current detector.

In the above dummy load system integrating LED turn lights, wherein the dummy load of the rear lights is a resistive load, and the resistive load is used to increase the current detected by the turn bulb current detector. In the above dummy load system integrating LED turn signals, the first turn signal, the second turn signal, the third turn signal and the fourth turn signal are all LED lamps.

A method for operating a dummy load system with integrated LED turn signals, wherein: the dummy load system with integrated LED turn lights includes the aforementioned dummy load system with integrated LED turn lights, and the method at least includes the following steps:

Step 1, the operator manually operates the steering switch, and the steering switch sends a control signal to the current detection control module to control the first current detection control module or the second current detection control module or the third current detection control module or the fourth current detection control module start up.

Step 2, the current detection control module activated in step 1 transmits an electrical signal to the correspondingly connected first turn signal lamp or the second turn signal lamp or the third turn signal lamp or the fourth turn signal lamp to make the turn signal lamp emit light.

Step 3. Determine whether the turn signal is working normally. If the turn signal is working normally, the turn light bulb galvanometer in the turn switch detects that the current flowing through the turn signal is normal, and the turn light bulb metronome works normally. If the turn signal does not work, the turn switch The steering bulb current detector in the steering lamp detects that the current flowing through the steering lamp is abnormal, so that the frequency of the steering bulb metronome is accelerated and an alarm is given.

Step 3.1, if the turn signals work normally, the current detection control module started in step 1 sends a switch control signal to the corresponding headlight switch or rear light switch, so that the front light switch or rear light switch is turned on, and the corresponding headlight dummy load Or the rear light dummy load works.

Step 3.2, if the turn signal does not work, the current detection control module started in step 1 sends a switch control signal to the corresponding headlight switch or rear light switch, so that the headlight switch or rear light switch is disconnected, and the corresponding headlight dummy load Or the rear light dummy load does not work.

Compared with the prior art, a dummy load system integrating LED turn signals has the following advantages and positive effects due to the adoption of the above scheme:

1. A dummy load system with integrated LED turn signals of the present invention, because one dummy load manages two left and right turn lights, that is, the whole vehicle only needs two dummy loads, which saves half of the space.

2. A dummy load system integrating LED turn signals of the present invention saves components such as high-power resistors and large heat-dissipating structural parts, and reduces weight.

3. The dummy load system with integrated LED turn signals of the present invention has the advantages of simple structure, low cost, small volume, convenient manufacture, and easy popularization and application.

Hereinafter, specific examples will be used for further description, but the examples are only examples of optional implementations of the present invention, and the disclosed features are only used to illustrate and illustrate the technical solutions of the present invention, and are not intended to limit the present invention scope of protection.

Description of drawings

For a better understanding of the present invention, reference may be made to the accompanying drawings cited in this specification for reference. In the accompanying drawings:

Fig. 1 is a block diagram of a dummy load system integrating LED turn signals according to the present invention.

Fig. 2 is a schematic circuit diagram of a dummy load system integrating LED turn signals according to the present invention.

FIG. 3 is a method flow chart of an operation method of a dummy load system integrating LED turn signals according to the present invention.

Detailed ways

According to the claims of the present invention and the contents disclosed in the summary of the invention, the technical solution of the present invention is specifically described as follows.

Please refer to accompanying drawing 1, a kind of dummy load system of integrated LED turn signal of the present invention comprises a turn switch 1, a pair of dummy load control circuit 2 and a group of turn signal 3, and turn switch 1 is externally connected to automobile power supply (not shown in the figure shown), is used to provide electrical connection for the dummy load system of the LED turn signal; the turn switch 1 includes a manual turn switch (not shown in the figure), a turn bulb metronome (not shown in the figure) and a turn bulb detection An integrated circuit of a converter (not shown in the figure), a pair of dummy load control circuits 2 include a headlight dummy load control circuit 21 and a rear light dummy load control circuit 22, and the headlight dummy load control circuit 21 includes a first current detection control circuit Module 211, the second current detection control module 212 and the front lamp dummy load circuit 213, the rear lamp dummy load control circuit 22 includes the third current detection control module 221, the fourth current detection control module 222 and the rear lamp dummy load circuit 223, a The group turn signal lamp 3 includes a first turn signal lamp 31 , a second turn signal lamp 32 , a third turn signal lamp 33 and a fourth turn signal lamp 34 . The first turning light 31 , the second turning light 32 , the third turning light 33 and the fourth turning light 34 are all LED lamps.

The output end of the steering switch 1 is connected in parallel with the input ends of the first current detection control module 211, the second current detection control module 212, the third current detection control module 221 and the fourth current detection control module 222, and the output of the steering switch 1 The ends are also respectively connected to the input ends of a pair of dummy load control circuits 2, and the steering switch 1 sends electrical signals to a pair of dummy load control circuits 2 respectively, so as to provide electric energy for a pair of dummy load control circuits 2 to ensure their normal operation. The first output port of the current detection control module 211 is connected to the anode of the first turn signal lamp 31, and the first current detection control module 211 sends an electrical signal to the first turn signal lamp 31 to control the first turn signal lamp 31 to emit light and detect the current flow. Through the current of the first turning light 31, the negative pole of the first turning light 31 is externally connected to the automobile power supply (not shown in the figure), and the first output port of the second current detection control module 212 is connected to the positive pole of the second turning light 32. The second current detection control module 212 sends an electric signal to the second turn signal lamp 32 for controlling the light emission of the second turn signal lamp 32 and detecting the current flowing through the second turn signal lamp 32. not shown), the second output port of the first current detection control module 211 and the second output port of the second current detection control module 212 are connected in parallel with the input end of the headlight dummy load circuit 213, and the headlight dummy load The output end of the circuit 213 is externally connected to the negative pole of the automobile power supply (not shown in the figure).

The first output port of the third current detection control module 221 is connected to the anode of the third turn signal lamp 33, and the third current detection control module 221 sends an electric signal to the third turn signal lamp 33 for controlling the third turn signal lamp 33 to emit light, and Detect the current flowing through the third turn signal lamp 33, the negative electrode of the third turn signal lamp 33 is connected to the vehicle power supply (not shown in the figure), and the first output port of the fourth current detection control module 222 is connected to the positive electrode of the fourth turn signal lamp 34 , the fourth current detection control module 222 sends an electrical signal to the fourth turn signal lamp 34 for controlling the light emission of the fourth turn signal lamp 34 and detecting the current flowing through the fourth turn signal lamp 34. The negative electrode of the fourth turn signal lamp 34 is externally connected to the vehicle power supply (not shown in the figure), the second output port of the third current detection control module 221 and the second output port of the fourth current detection control module 222 are connected in parallel with the input end of the rear light dummy load circuit 223, and the rear light The output end of the dummy load circuit 223 is externally connected to the negative pole of the automobile power supply (not shown in the figure).

Please refer to the accompanying drawing 2, the headlight dummy load circuit 213 includes a headlight switch 2131 and a headlight dummy load 2132; the switch output terminals of the first current detection control module 211 and the second current detection control module 212 are respectively connected The input terminal of the light switch 2131 is connected, and the first current detection control module 211 and the second current detection control module 212 transmit switch control signals to the front light switch 2131 for controlling the opening and closing of the front light switch 2131, and the front light switch 2131 The output end of the headlight dummy load 2132 is connected to one end, and the other end of the front light dummy load 2132 is grounded.

The rear light dummy load control circuit 223 includes a rear light switch 2231 and a rear light dummy load 2232; the switch output ends of the third current detection control module 221 and the fourth current detection control module 222 are respectively connected to the input ends of the rear light switch 2231 , the third current detection control module 221 and the fourth current detection control module 222 transmit switch control signals to the rear light switch 2231 for controlling the opening and closing of the rear light switch 2231, the output end of the rear light switch 2231 is connected to the rear light switch One end of the load 2232 is connected, and the other end of the backlight dummy load 2232 is grounded. The front lamp dummy load 2132 and the rear lamp dummy load 2232 can use high-power resistive loads to increase the current detected by the steering bulb current detector (not shown in the figure).

Please refer to accompanying drawing 3, a kind of operation method of the dummy load system of integrated LED turn signal, wherein the dummy load system of integrated LED turn signal includes the above-mentioned dummy load system of integrated LED turn signal, the method at least includes the following steps :

Step 1, the operator manually operates the steering switch 1, and the steering switch 1 sends a control signal to the first current detection control module 211 or the second detection control module 212 or the third detection control module 221 or the fourth detection control module 222 to control the first A current detection control module 211 or a second current detection control module 212 or a third current detection control module 221 or a fourth current detection control module 222 is started.

Step 2, the first current detection control module 211 or the second detection control module 212 or the third detection control module 221 or the fourth detection control module 222 started in step 1 sends a signal to the correspondingly connected first turn lamp 31 or the second turn signal The light 32 or the third turning light 33 or the fourth turning light 34 transmits an electric signal to make the turning light 3 emit light.

Step 3, judge whether the turn signal lamp 3 is working normally, if the turn signal lamp 3 is working normally, the turn light bulb current detector (not shown in the figure) in the turn switch 1 detects that the current flowing through the turn signal light 3 is normal, and the turn light bulb metronome Normal operation, if the turn signal lamp 3 does not work, the turn bulb current detector (not shown in the figure) in the turn switch 1 detects that the current flowing through the turn signal lamp 3 decreases, and the turn bulb metronome (not shown in the figure) ) frequency increases and alarms.

Step 3.1, if the turn signal lamp 3 is working normally, the first current detection control module 211 or the second detection control module 212 or the third detection control module 221 or the fourth detection control module 222 started in step 1 sends a corresponding headlight switch 2131 Or the rear light switch 2231 sends a switch control signal, so that the front light switch 2131 or the rear light switch 2231 is turned on, and the corresponding front light dummy load 2132 or rear light dummy load 2232 works.

Step 3.2, if the turn signal lamp 3 does not work, the first current detection control module 211 or the second detection control module 212 or the third detection control module 221 or the fourth detection control module 222 started in step 1 sends a signal to the corresponding headlight switch 2131 Or the rear light switch 2231 sends a switch control signal to disconnect the front light switch 2131 or the rear light switch 2231, and the corresponding front light dummy load 2132 or rear light dummy load 2232 does not work.

The operating principle of a dummy load system integrating LED turning lights of the present invention is that a pair of dummy load control circuits 2 and two turning lights 3 work together, and because the turning switch 1 is an integrated circuit of the prior art, the turning switch 1 is The standard development of light bulb, in the present invention, what turn signal lamp 3 adopts is LED light fixture, and the electric current of LED light fixture is less, so add a large power resistive load to increase current, when the turn bulb current detector in turn switch 1 (not shown in the figure) When the detected current of the headlight load 213 or rear light dummy load 223 + the current of the corresponding turn signal lamp 3 = the current of the bulb, the turn bulb metronome in the turn switch 1 (not shown in the figure) out) work normally.

Taking the first turn light 31 as an example, if the first turn light 31 works normally: the turn switch 1 outputs an electric signal to the positive pole of the first turn light 31 through the first current detection control module 211 , and the first turn light 31 works normally. The first current detection control module 211 detects that the current of the first turn signal lamp 31 is normal, and sends a signal to the headlight switch 2131 to turn on the headlight switch 2132 to make the high-power headlight dummy load 2132 work. In this way, the current of the headlight dummy load 2132+the current of the steering lamp 31=the current of the bulb, so that the steering bulb metronome (not shown in the figure) works normally.

After the first turn indicator 31 is damaged: the turn switch 1 outputs an electrical signal to the positive pole of the first turn indicator 31 through the first current detection control module 211, the first turn indicator 31 does not work, and the current decreases, the first current detection control module 211 Detecting that the current failure of the first turn signal lamp 31 does not send a signal to the headlight switch 2131, the headlight switch 2131 is not conducted, and the high-power headlight dummy load 2132 does not work. In this way, the current of the headlight dummy load 2132+the current of the first turn signal lamp 31<0.3A, the frequency of the turn bulb metronome (not shown in the figure) is accelerated, and an alarm is given immediately. The working principles of the other turning lights 3 are the same as those of the first turning lights 31 .

To sum up, a dummy load system integrating LED turn signals in the present invention can manage two left and right turn lights with one dummy load, that is, the whole vehicle only needs two dummy loads, which saves half of the space; the invention saves large power Components such as resistors and large heat dissipation structural parts reduce the weight; the invention has the advantages of simple structure, low cost, small volume, convenient manufacture and easy popularization and application.

The above content is an example of a specific embodiment of a dummy load system integrating LED turn signals in the present invention. For the equipment and structures that are not described in detail, it should be understood that the existing general equipment and general methods in the field are implemented. .

Claims (8)

1. the fictitious load system of an integrated LED steering indicating light is characterized in that, comprising:

One pole changer, described pole changer external automobile power supply; Described pole changer is to have comprised the manual steering switch, turn to the bulb metronome and turned to the integrated circuit of bulb current detector;

A pair of fictitious load control circuit, described a pair of fictitious load control circuit comprises headlight fictitious load control circuit and back light fictitious load control circuit;

Described headlight fictitious load control circuit comprises the first inspection flow control module, the second inspection flow control module and headlight dummy load circuit; Described back light fictitious load control circuit comprises the 3rd inspection flow control module, the 4th inspection flow control module and back light dummy load circuit; And

One group of steering indicating light, described one group of steering indicating light comprises the first steering indicating light, the second steering indicating light, the 3rd steering indicating light and the 4th steering indicating light;

The output terminal of described pole changer is examined flow control module with first respectively, the second inspection flow control module, the input end of the 3rd inspection flow control module and the 4th inspection flow control module also connects, the output terminal of pole changer also is connected with the back light dummy load circuit with the headlight dummy load circuit respectively, the first output port of the first inspection flow control module is connected with the positive pole of the first steering indicating light, the negative pole external automobile power supply of the first steering indicating light, the first output port of the second inspection flow control module is connected with the positive pole of the second steering indicating light, the negative pole of the negative pole external automobile power supply of the second steering indicating light, the second output port of the second output port of the first inspection flow control module and the second inspection flow control module and the input end of headlight dummy load circuit also connect the negative pole of the output terminal external automobile power supply of headlight dummy load circuit;

The first output port of described the 3rd inspection flow control module is connected with the positive pole of the 3rd steering indicating light, the negative pole external automobile power supply of the 3rd steering indicating light, the first output port of the 4th inspection flow control module is connected with the positive pole of the 4th steering indicating light, the negative pole of the negative pole external automobile power supply of the 4th steering indicating light, the second output port of the second output port of the 3rd inspection flow control module and the 4th inspection flow control module and the input end of back light dummy load circuit also connect the negative pole of the output terminal external automobile power supply of back light dummy load circuit.

2. the fictitious load system of integrated LED steering indicating light according to claim 1, it is characterized in that: described headlight dummy load circuit comprises a front lamp switch and a headlight fictitious load; The output switching terminal of the first inspection flow control module and the second inspection flow control module is connected with the input end of front lamp switch respectively, the first inspection flow control module and the second inspection flow control module be lamp switch transmitting switch control signal forward, described the first inspection flow control module and the second inspection flow control module are used for disconnection and the closure of the front lamp switch of control, the output terminal of front lamp switch is connected with an end of headlight fictitious load, the other end ground connection of headlight fictitious load.

3. the fictitious load system of integrated LED steering indicating light according to claim 1, it is characterized in that: described back light fictitious load control circuit comprises a rear lamp switch and a back light fictitious load; The output switching terminal of the 3rd inspection flow control module and the 4th inspection flow control module is connected with the input end of rear lamp switch respectively, the 3rd inspection flow control module and the 4th inspection flow control module be lamp switch transmitting switch control signal backward, described the 3rd inspection flow control module and the 4th inspection flow control module are used for disconnection and the closure of the rear lamp switch of control, the output terminal of rear lamp switch is connected with an end of back light fictitious load, the negative pole of the other end external automobile power supply of back light fictitious load.

4. the fictitious load system of integrated LED steering indicating light according to claim 2, it is characterized in that: described headlight fictitious load is ohmic load, described ohmic load is used for increasing the electric current that turns to the bulb current detector to detect.

5. the fictitious load system of integrated LED steering indicating light according to claim 3, it is characterized in that: described back light fictitious load is ohmic load, described ohmic load is used for increasing the electric current that turns to the bulb current detector to detect.

6. the fictitious load system of integrated LED steering indicating light according to claim 1, it is characterized in that: described the first steering indicating light, the second steering indicating light, the 3rd steering indicating light and the 4th steering indicating light all are LED light fixtures.

7. the method for operating of the fictitious load system of an integrated LED steering indicating light, it is characterized in that: the fictitious load system of described integrated LED steering indicating light comprises that the method may further comprise the steps at least such as the fictitious load system of each described integrated LED steering indicating light of claim 1-6:

Step 1, operator's manual operation pole changer, pole changer sends a control signal to the inspection flow control module, and control the first inspection flow control module or the second inspection flow control module or the 3rd inspection flow control module or the 4th inspection flow control module start;

The inspection flow control module that starts in the step 2, step 1 is transmitted an electric signal to the first steering indicating light of connection corresponding to it or the second steering indicating light or the 3rd steering indicating light or the 4th steering indicating light, makes steering indicating light luminous;

Step 3, judge whether steering indicating light works, if steering indicating light normal operation, in the pole changer to turn to the bulb current detector to detect the electric current that flows through steering indicating light normal, turn to the normal operation of bulb metronome, if steering indicating light is not worked, in the pole changer to turn to the bulb current detector to detect the electric current that flows through steering indicating light undesired, make to turn to bulb metronome frequency to accelerate and report to the police.

8. the method for operating of the fictitious load system of integrated LED steering indicating light according to claim 7 is characterized in that: also comprise in the described step 3:

Step 3.1, if the steering indicating light normal operation, the inspection flow control module that starts in the step 1 is sent switch controlling signal to corresponding front lamp switch or rear lamp switch, makes front lamp switch or back light switch conduction, corresponding headlight fictitious load or back light fictitious load work;

Step 3.2, if steering indicating light is not worked, the inspection flow control module that starts in the step 1 is sent switch controlling signal to corresponding front lamp switch or rear lamp switch, and front lamp switch or rear lamp switch are disconnected, corresponding headlight fictitious load or back light fictitious load are not worked.

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