Safe, self-recovering and durable car daytime running light control system

Abstract

A safe, self-recovering, and durable car daytime running light control system includes a power supply chip U1, a first switching circuit Q1, a second switching circuit Q2, an overcurrent protection circuit F, a double-arranged toggle switch SW1, a third anti-reverse polarity component D3, a fourth anti-reverse polarity component D4, and a four-channel inductor U2. The double-arranged toggle switch SW1 is connected to a normally-open power supply V1 through the third anti-reverse polarity component D3 and the fourth anti-reverse polarity component D4. The double-arranged toggle switch SW1 is connected to the third pin of the power supply chip U1 through the overcurrent protection circuit F. The power supply chip U1 is connected in parallel to the left daytime running light L1 and the right daytime running light L2 of the car through the first filter capacitor C1 and the third filter capacitor C3. The starting power supply V2 is connected to the first switching circuit Q1 through the first anti-reverse polarity component D1 and the second anti-reverse polarity component D2. The first switching circuit Q1 is connected to the four-channel inductor U2. The four-channel inductor U2 is connected to the second pin of the power supply chip U1. The brake line S1 is connected to the third pin of the power supply chip U1 through the second switching circuit Q2.

Description

Technical Field

[0001] The present invention relates to a daytime running light control system, and in particular to a daytime running light control system capable of high current safety protection and self-recovery, and a control system that turns off the daytime running light when braking. Background Art

[0002] At present, most domestic cars use mechanical control switches for their daytime running lights. This design has the following defects: 1. The daytime running lights are not controlled by a control system, and the problem of short circuit in the daytime running light circuit load cannot be eliminated, which may cause fire and pose a safety hazard; 2. Mechanical failure is prone to occur, causing damage and troublesome maintenance; 3. The mechanical structure has a short service life and high replacement cost. Summary of the Invention

[0003] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a safe, self-recovering, durable car daytime running light control system that can automatically restore work when a high-current fault lamp returns to normal, thereby solving fire hazards, ensuring life safety, and having a long service life and low cost.

[0004] The technical solution of the safe, self-resetting, and durable car daytime running light control system of the present invention is characterized by comprising a power supply chip U1, a first switch circuit Q1, a second switch circuit Q2, an overcurrent protection circuit F, a double-arranged toggle switch SW1, a third anti-reverse polarity component D3, a fourth anti-reverse polarity component D4, and a four-channel inductor U2. The double-arranged toggle switch SW1 is connected to a normally open power supply V1 via the third anti-reverse polarity component D3 and the fourth anti-reverse polarity component D4. The double-arranged toggle switch SW1 is connected to the third pin of the power supply chip U1 via the overcurrent protection circuit F. The power supply chip U1 is connected in parallel to the left daytime running light L1 and the right daytime running light L2 of the car via the first filter capacitor C1 and the third filter capacitor C3. The starting power supply V2 is connected to the first switch circuit Q1 via the first anti-reverse polarity component D1 and the second anti-reverse polarity component D2. The first switch circuit Q1 is connected to the four-channel inductor U2. The four-channel inductor U2 is connected to the second pin of the power supply chip U1. The brake line S1 is connected to the third pin of the power supply chip U1 via the second switch circuit Q2.

[0005] During operation, the normally-on power supply V1 supplies power to the power chip U1. When the car's starting power supply V2 is turned on, the first switch circuit Q1 is turned on. The first switch circuit Q1 is connected to the power chip U1 through the four-channel inductor U2, and the left and right daytime running lights L1 and L2 of the car light up.

[0006] When the car presses the brake line S1, the brake line S1 connects to the second switch circuit Q2, and the second switch circuit Q2 connects to the power chip U1, and the left daytime running light L1 and the right daytime running light L2 of the car are turned off;

[0007] When a high current fault occurs in the load of the left daytime running light L1 or / and the right daytime running light L2 of the car, the overcurrent protection circuit F disconnects from the normally open power supply V1. When the load current of the left daytime running light L1 and the right daytime running light L2 of the car returns to normal, the overcurrent protection circuit F automatically restores the connection with the normally open power supply V1.

[0008] The present invention discloses a safe, self-resetting, and durable daytime running light (DRL) control system for passenger cars. The system includes an independent dual-switch switch SW1, connected via an overcurrent protection circuit F, and cooperating with a power supply chip U1 to control the left and right DRLs L1 and L2. The entire circuit module is housed in a sealed cast aluminum housing. The left and right DRLs L1 and L2 are illuminated only when both the normally-open power supply V1 and the starting power supply V2 are simultaneously energized. Upon activation of the dual-switch switch SW1, the control turns off the left and right DRLs L1 and L2. A key feature of the system is that if a high current fault (e.g., a short circuit or internal damage to the positive and negative terminals of the DRLs) occurs in the loads of the left and right DRLs L1 and L2, the overcurrent protection circuit F automatically disconnects, minimizing the risk of spontaneous combustion. Once the fault is resolved, the overcurrent protection circuit F automatically resumes normal operation without requiring replacement, thus ensuring the safety of passengers. This integrated controller can be widely used in 12V cars with daytime running lights. Its advantages are as follows: a. The control system automatically restores operation after a high-current fault light returns to normal; b. It eliminates the potential fire hazard associated with high-current daytime running lights; c. It provides safety for car owners; and d. It also extends the life of the daytime running lights.

[0009] The present invention's safe, self-resetting, and durable daytime running light control system for sedans features an overcurrent protection circuit F comprising two parallel-connected FSMD110 fuses F1 and F2. When the current flowing through the left daytime running light L1 or / and the right daytime running light L2 exceeds the rated current of the FSMD110 fuses F1 and F2, the FSMD110 fuses F1 and F2 automatically disconnect (disconnect). Once the fault is resolved, the fuses automatically restore contact. The first switching circuit Q1 can be a switching transistor, and the second switching circuit Q2 can be a switching MOSFET. The first, second, third, and fourth reverse polarity protection components D1, D2, D3, and D4 can be reverse polarity protection diodes, providing stable connections. A second filter capacitor C2 and a twelfth voltage-divider resistor R12 are positioned between the starting power supply V2 and the first reverse polarity protection component D1 to filter and divide the current. A sixth filter capacitor C6 and an eighth voltage-dividing resistor R8 are provided between the brake line S1 and the second anti-reverse connection component D2 to filter and divide the current to ensure a more stable current. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The diagram is a circuit diagram of a safe, self-recovering, and durable car daytime running light control system according to the present invention. DETAILED DESCRIPTION

[0011] The present invention relates to a safe, self-recovering and durable car daytime running light control system. Figure 1As shown, it includes a power chip U1, a first switch circuit Q1, a second switch circuit Q2, an overcurrent protection circuit F, a double-arranged toggle switch SW1, a third anti-reverse polarity component D3, a fourth anti-reverse polarity component D4, and a four-channel inductor bank U2. The double-arranged toggle switch SW1 is connected to the normally-open power supply V1 through the third anti-reverse polarity component D3 and the fourth anti-reverse polarity component D4. The double-arranged toggle switch SW1 is connected to the third pin of the power chip U1 through the overcurrent protection circuit F. The power chip U1 is connected in parallel to the left daytime running light L1 and the right daytime running light L2 of the car through the first filter capacitor C1 and the third filter capacitor C3. The starting power supply V2 is connected to the first switch circuit Q1 through the first anti-reverse polarity component D1 and the second anti-reverse polarity component D2. The first switch circuit Q1 is connected to the four-channel inductor bank U2, and the four-channel inductor bank U2 is connected to the second pin of the power chip U1. The brake line S1 is connected to the third pin of the power chip U1 through the second switch circuit Q2. During operation, the normally-open power supply V1 supplies power to the power chip U1. When the car's starting power supply V2 is turned on, the first switch circuit Q1 is connected. The first switch circuit Q1 is connected to the power chip U1 through the four-channel inductor U2, and the left and right daytime running lights L1 and L2 of the car are illuminated. When the brake line S1 of the car is pressed, the brake line S1 is connected to the second switch circuit Q2, and the second switch circuit Q2 is connected to the power chip U1, and the left and right daytime running lights L1 and L2 of the car are extinguished. When a high current fault occurs in the load of the left and / or right daytime running lights L1 and L2 of the car, the overcurrent protection circuit F disconnects from the normally-open power supply V1. When the load current of the left and right daytime running lights L1 and L2 of the car returns to normal, the overcurrent protection circuit F automatically restores the connection with the normally-open power supply V1. This solution includes an independent dual-switches SW1, connected via an overcurrent protection circuit F, and working with a power supply chip U1 to control the left and right daytime running lights (DRLs) L1 and L2. The entire circuit module is housed in a sealed cast aluminum housing. The left and right DRLs L1 and L2 can only be illuminated when both the normally-open power supply V1 and the starting power supply V2 are simultaneously energized. When the dual-switches SW1 are activated, the left and right DRLs L1 and L2 are turned off when braking (i.e., when the brake line S1 is energized). A key feature of this solution is that if a high current fault (e.g., a short circuit or internal damage) occurs in the loads of the left and right DRLs L1 and L2, the overcurrent protection circuit F automatically disconnects, minimizing the risk of spontaneous combustion. Once the fault is resolved, the overcurrent protection circuit F automatically resumes normal operation without requiring replacement, thus ensuring the safety of passengers. This integrated controller is widely applicable to 12V cars with DRLs. Its advantages are specifically reflected in the following aspects: a. The control system can automatically resume operation after the high-current fault lamp returns to normal; b. It solves the hidden danger of fire caused by high current of daytime running lamps; c. It provides protection for the life safety of car consumers; d. It can also extend the service life of daytime running lamps.The overcurrent protection circuit F comprises two parallel-connected FSMD110 fuses F1 and F2. When the current flowing through the left daytime running light L1 or / and the right daytime running light L2 exceeds the rated current of the FSMD110 fuses F1 and F2, the FSMD110 fuses F1 and F2 automatically disconnect (disconnect). Once the fault is resolved, the fuses automatically restore contact. The first switching circuit Q1 can be a switching transistor, and the second switching circuit Q2 can be a switching MOSFET. The first, second, third, and fourth reverse polarity protection components D1, D2, D3, and D4 can be reverse polarity protection diodes, providing stable connections. A second filter capacitor C2 and a twelfth voltage-divider resistor R12 are provided between the starting power supply V2 and the first reverse polarity protection component D1 to filter and divide the current. A sixth filter capacitor C6 and an eighth voltage-divider resistor R8 are provided between the brake line S1 and the second reverse polarity protection component D2 to filter and divide the current, ensuring more stable current flow.

Claims

1. Safe and self-recovering durable car daytime running light control system, characterized by The device comprises a power supply chip U1, a first switch circuit Q1, a second switch circuit Q2, an overcurrent protection circuit F, a double-arranged toggle switch SW1, a third anti-reverse polarity component D3, a fourth anti-reverse polarity component D4, and a four-channel inductor U2. The double-arranged toggle switch SW1 is connected to a normally-open power supply V1 via the third anti-reverse polarity component D3 and the fourth anti-reverse polarity component D4. The double-arranged toggle switch SW1 is connected to the third pin of the power supply chip U1 via the overcurrent protection circuit F. The power supply chip U1 is connected in parallel to the left daytime running light L1 and the right daytime running light L2 of the car via the first filter capacitor C1 and the third filter capacitor C3. The starting power supply V2 is connected to the first switch circuit Q1 via the first anti-reverse polarity component D1 and the second anti-reverse polarity component D2. The first switch circuit Q1 is connected to the four-channel inductor U2. The four-channel inductor U2 is connected to the second pin of the power supply chip U1. The brake line S1 is connected to the third pin of the power supply chip U1 via the second switch circuit Q2. During operation, the normally-on power supply V1 supplies power to the power chip U1. When the car's starting power supply V2 is turned on, the first switch circuit Q1 is turned on. The first switch circuit Q1 is connected to the power chip U1 through the four-channel inductor U2, and the left and right daytime running lights L1 and L2 of the car light up. When the car presses the brake line S1, the brake line S1 connects to the second switch circuit Q2, and the second switch circuit Q2 connects to the power chip U1, and the left daytime running light L1 and the right daytime running light L2 of the car are turned off; When a high current fault occurs in the load of the left daytime running lamp L1 or / and the right daytime running lamp L2 of the car, the overcurrent protection circuit F is disconnected from the normally open power supply V1. When the load current of the left daytime running lamp L1 and the right daytime running lamp L2 of the car returns to normal, the overcurrent protection circuit F automatically restores the connection with the normally open power supply V1. The overcurrent protection circuit F includes two parallel FSMD110 fuses F1 and F2. The first switch circuit Q1 is a switch transistor, the second switch circuit Q2 is a switch MOS tube, and the first anti-reverse polarity component D1, the second anti-reverse polarity component D2, the third anti-reverse polarity component D3 and the fourth anti-reverse polarity component D4 are anti-reverse polarity diodes.

2. The safe, self-recovering, and durable car daytime running light control system according to claim 1, characterized in that A second filter capacitor C2 and a twelfth voltage-dividing resistor R12 are provided between the starting power supply V2 and the first anti-reverse connection component D1.

3. The safe, self-recovering, and durable car daytime running light control system according to claim 1 is characterized in that A sixth filter capacitor C6 and an eighth voltage-dividing resistor R8 are provided between the brake line S1 and the second anti-reverse connection component D2.

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