TW202310673A - Method of controlling warning lamps to enter low power mode characterized by using a control circuit to limit the current of flowing into the warning lamps, thereby, the warning lamps moving in a low power mode to reduce the brightness and prolong service life - Google Patents

Abstract

The present invention relates to a method of controlling warning lamps to enter a low power mode, which includes the following steps: setting a predetermined ID number of the warning lamps as an initiator and setting the remained ID numbers as receivers; allowing the warning lamp set as the initiator to receive an initial command signal from the control bus via its signal cable, transmit a data signal, a clock signal and an ID datum from the data bus and select a low power mode from the lamp signal modes to perform lighting flashes; and allowing the warning lamps set as the receivers to obtain the data signals, the clock signals and the ID data from the data bus via their signal cables, and the lamp signal modes of the receivers and the initiator using the low power mode to perform lighting flashes, wherein, a control circuit of executing the low power mode includes an active switch receiving the low power mode command transmitted from the initiator to form a conductive state, allows a current drop resistor electrically connected to the active switch to reduce the passing current to a predetermined ratio and transmits the reduced current to the receivers which follow the initiator to execute the low power mode and reduce the brightness of the warning lamps.

Description

The method of controlling the warning light to enter the low power mode

The present invention provides a method for controlling the warning lights to enter the low power mode, especially a method for limiting the current flowing into multiple warning lights through a control circuit, so that the multiple warning lights enter the low power mode and lower their lumens to Vehicles equipped with multiple warning lights are moderately bright and not dazzling when performing duties at night, and can prolong the service life of the warning lights and their power supply modules.

Press, warning lights are used in many environments and places, such as: road construction warning, public place safety warning, high-rise building safety warning, fire trucks, ambulances and police vehicles, etc., and warning lights can be divided into single warning lights or A warning light group is composed of multiple warning lights, and most of the warning light groups are installed on the roof of the vehicle that needs to be warned, and the conventional warning light group must pass through an electronic control device when performing multiple warning lights to flash. To control multiple warning lights, but the use environment of the warning lights includes: daytime, night, rainy, snowy, foggy conditions, and the brightness of the warning lights required by different situations is not the same, for example: in At night, the brightness of the warning light only needs 70% of the brightness during the day, so that passers-by can clearly identify the flashing state of the warning light and achieve the warning effect, while other conditions such as daytime, rainy, snowy, and foggy conditions are low. One hundred percent brightness is required. However, the conventional warning light does not have any mechanism for reducing the brightness, so it cannot save the power of the vehicle's power supply module, and providing 100% power to light the warning light at all times may cause serious problems. The service life of warning lights and power supply modules is shortened, and the above-mentioned shortcomings of commercially available warning lights need to be improved by those engaged in this industry.

Therefore, in view of the above-mentioned problems and deficiencies, the inventor collected relevant information, and after various evaluations and considerations, the invention of this method of controlling the warning light to enter the low power mode was designed.

The main purpose of the present invention is to provide a method for controlling the warning light to enter the low power mode, which includes the following steps: setting the predetermined identity number of the plurality of warning lights as an initiator, and setting the remaining identity numbers as a receiver; The initial warning light receives an initial command signal from the control bus through its signal line, and transmits a data signal, a clock signal and an identity data from the data bus, and selects a low from the light mode Light flashing in power mode; the data signal, the clock signal and the identity data are obtained from the data bus through the signal lines of the warning lights set as receivers, and the receivers and the initial The light mode of the light source flashes in the low power mode, and the control circuit for implementing the low power mode includes an active switch, which forms a conduction state after receiving the low power mode command transmitted from the initiator. , and make a drop resistor electrically connected with the active switch to reduce the passing current to a predetermined ratio, and after the reduction, the current is sent to multiple receivers to follow the initiator to execute the low power mode and make the warning lights The brightness is reduced. Through the control circuit, the current flowing into the multiple warning lights is limited, so that the multiple warning lights enter the low power mode and their lumens are lowered, so as to match the brightness of vehicles equipped with multiple warning lights when performing duties at night. Dazzling, and at the same time prolong the service life of the warning light and its power supply module.

A secondary object of the present invention is that the control circuit is provided with a two-voltage divider on its input side Resistors, and a zener diode that can stabilize voltage is connected in parallel to one of the voltage dividing resistors, and the zener diode is further connected in parallel with the active switch, the active switch is connected in series with the current-reducing resistor, and the current-reducing The resistor is further electrically connected to a pin of an LED control integrated circuit with the function of adjusting current, and the two pins of the LED control integrated circuit are electrically connected to an inductor with a low conduction voltage Schottky II Pole body, a resistor and an input voltage, and the two pins of the LED control integrated circuit are connected to the ground side with complex bypass capacitors that can reduce noise, and the sensing of the LED control integrated circuit The pins are electrically connected to the warning light group, and the warning light group includes the warning lights to form a control circuit capable of executing the low power mode.

Another object of the present invention is that the predetermined proportion range in which the current passing through the current-dropping resistor is reduced is 50%-80% of the maximum current value.

Another object of the present invention is that the light pattern includes a synchronous flashing, an interlaced flashing, a polling flashing, a recursive flashing and the low power mode.

Another object of the present invention is to initialize the data of an electronically erasable read-only memory before selecting one of the warning lights from the light pattern to flash the warning light that is set as the initial one.

Another object of the present invention is that the warning lights set as receivers are set as receivers before receiving any signal from the control bus and the data bus through their signal lines, respectively. The light pattern of an electronically erasable ROM flashes.

Another object of the present invention is that before the initiator and the receivers change their identities, the receivers first suspend the current light pattern and then execute a self-flashing pattern.

1: warning light group

11a: warning light 1

11n: warning light N

12: Electronic erasable read-only memory

121: Light mode

1211: synchronous flashing

1212: Staggered flashing

1213: polling flashing

1214: recursive flashing

1215: Low power mode

122: ID number

13: Self-flashing mode

2: Control bus

21: Initial command signal

22: Change identity command signal

3: Data bus

31: Data signal

32: clock signal

33: Identity information

4: Initiator

5: Receiver

61: Receive a start command to set multiple warning lights to set a light pattern, start from 1 and carry out the numbering of each warning light in sequence, and use the light pattern number to set the identity number of each warning light synchronously

62: Set the predetermined ID numbers of these warning lights as an initiator, and set the remaining ID numbers as a receiver

63: The warning lamp which is set as the initiator receives an initial command signal from the control bus through its signal line, and transmits a data signal, a clock signal and an identity data from the data bus, and is controlled by the Light mode select a low power mode for light flashing

64: Obtain the data signal, the clock signal and the identity data from the data bus through the signal lines of the warning lights set as receivers, and the lights of the receivers and the initiator The light flashes in this low power mode, and the control circuit for executing one of the low power modes includes An active switch, the active switch forms a conduction state after receiving the low-power mode instruction transmitted from the initiator, and after a current drop resistor electrically connected to the active switch reduces the passing current to a predetermined ratio, After the reduction, the current is sent to multiple receivers to follow the initiator to perform low power mode and reduce the brightness of these warning lights

65: Whether the common control bus of the initiator and the receivers receives a change identity command signal

7: Control circuit

C1, C2, C3, C4: Bypass capacitors

DLQ1: active switch

L1: inductance

R1: resistance

R2: drop resistor

R3, R4: Voltage divider resistors

SD1: Schottky diode

U1: LED control integrated circuit

LX, VIN, ADJ, SENSE, GND: Pins

ZD1: Zener diode

[Fig. 1] is a functional block diagram of the warning lamp group and its control framework of the present invention.

[Fig. 2] is a functional block diagram of the data stored inside the electronic erasable ROM of the present invention.

[Fig. 3] is another functional block diagram of the warning lamp group and its control structure of the present invention.

[Fig. 4] is a control flow diagram of the warning light group of the present invention.

[Fig. 5] is a pulse wave signal diagram in which the warning lamps of the initiator and receiver of the present invention are in the start mode.

[Fig. 6] is a pulse wave signal diagram in which the warning lamps of the initiator and receiver of the present invention are in the end mode.

[Fig. 7] is a functional block diagram of implementing the low power mode of the present invention.

[Fig. 8] is a control circuit diagram for implementing the low power mode of the present invention.

In order to achieve the above-mentioned purpose and effect, the technical means and the structure adopted by the present invention are hereby illustrated in detail with respect to the preferred embodiments of the present invention. Its features and functions are as follows, so that it can be fully understood.

Please refer to Figures 1-3, 5-6, each of which is a functional block diagram of the warning light set and its control structure of the present invention, a functional block diagram of the data stored in the electronic erasable read-only memory, the warning light set and its Another functional block diagram of the control structure, the pulse signal diagram of the warning lights of the initiator and receiver in the start mode, and the pulse signal diagram of the warning lights of the initiator and receiver in the end mode, which can be clearly seen from the figure It can be seen that the warning light group and its control framework of the present invention include: a warning light group 1, a control bus bar 2 and a data bus bar 3, and its main components and characteristics are described in detail as follows :

Please refer to Figure 1, wherein the warning light group (Light Device) 1 includes a plurality of warning lights (11a~11n), and each of the warning lights (11a~11n) is electrically connected to a control bus through a signal line (Control Bus) 2 and a data bus (Data Bus) 3, and these warning lights (11a~11n) further include an electronically erasable read-only memory (EEPROM) 12 inside. These warning lights (11a~11n) include a circuit board (PCB) (not shown in the figure), and a plurality of light-emitting diodes (LED) (not shown in the figure), at least one electronic The erasable ROM 12, and a plurality of metal contacts (Pad) for electrical connection of a plurality of signal lines (Cable) (not shown in the figure).

Please refer to Figures 2, 7, and 8, wherein the electronically erasable read-only memory 12 of the plurality of warning lights (11a~11n) each stores a light pattern (Flash Mode) 121 and an identity number (ID Number) 122, and the light pattern 121 includes a synchronous flashing (Synchronous) 1211, an interlaced flashing (Interlace) 1212, a polling flashing (Polling) 1213, a recursive flashing (Recursive) 1214 and a low power (Low Power) mode 1215. In addition to the above-mentioned light pattern 121, the initiator 4 can also control multiple receivers 5 to flash in different patterns through the data bus 3 (for example: the first receiver flashes synchronously, and the second receiver flashes in turn). Inquiry flashing, the third recipient does interleaved flashing), the aforementioned flashing of multiple receivers 5 controlled by initiator 4 is also within the scope of protection of the present invention. And the identity number 122 is determined according to the start command signal 21 and the change identity command signal 22 of the control bus 2, so the identity numbers 122 of these warning lights (11a~11n) are in a floating state, but only by accepting the aforementioned Make a change during two kinds of signals (21,22). The control circuit 7 for executing the low power mode 1215 includes an active switch DLQ1, which forms a switch after receiving the low power mode 1215 instruction transmitted from the initiator 4. In the on state, and make the current drop resistor R2 (predetermined resistance value obtained through calculation) electrically connected to the active switch DLQ1 reduce the passing current to a predetermined ratio (the predetermined ratio range is 50%~80% of the maximum current value %), and the reduced current is sent to the multiple receivers 5 to follow the initiator 4 to execute the low power mode 1215 and reduce the brightness of the warning lights (11a˜11n). Those skilled in this art can also use the software control method of Pulse-Width Modulation (PWM) to execute the low power mode 1215, and the method of using software to perform PWM is a known technology , so it will not be repeated here, but such execution of the low power mode 1215 should be covered by the present invention.

Please refer to Figure 8, the control circuit 7 is provided with two voltage divider resistors (R3, R4) on its input side (Input), and a zener diode that can stabilize the voltage is connected in parallel with one of the voltage divider resistors R4 body ZD1, and the Zener diode ZD1 is further connected in parallel with the active switch DLQ1, the active switch DLQ1 is connected in series with the current-dropping resistor R2, and the current-dropping resistor R2 is further electrically connected to an LED control integrated circuit (LED One pin (ADJ) of Control IC) U1 with the function of adjusting the current, the LED control integrated circuit U1 is electrically connected between the two pins (LX, VIN) of an inductor L1, which has a Schott with low conduction voltage The base diode SD1, a resistor R1 and an input voltage VIN, and the two pins (ADJ, SENSE) of the LED control integrated circuit U1 are connected to the ground side with complex bypasses that can reduce noise ( Bypass) capacitors (C1, C2, C3, C4), and the sensing pin (SENSE) of the LED control integrated circuit U1 is electrically connected to the warning light group 1, and the warning light group 1 includes these warning lights (11a~11n), to constitute the control circuit 7 capable of executing the low power mode 1215.

Please refer to Fig. 3, where the control bus 2 sends a start command signal 21 to notify the multiple warning lights (11a~11n), set the light pattern 121 and proceed sequentially from 1 Each warning light (11a~11n) is numbered, and the identity number 122 of each warning light (11a~11n) is set synchronously by using the number of the light pattern 121, and the predetermined identity number of these warning lights (11a~11n) Set as a starter (Starter) 4, and set the rest of the identity number as a receiver (Receiver) 5, the warning light set as the starter 4 receives a start command signal from the control bus 2 through its signal line (Start Command) 21, and send a data signal (Data) 31, a clock signal (Clock Pulse) 32 and an identity data (ID Information) 33 from the data bus 3, and select one of them by the light pattern 121 One (synchronous flashing 1211, interlaced flashing 1212, polling flashing 1213, recursive flashing 1214 or low power mode 1215) flashes the lights, and the warning lights set as receiver 5 pass through their signal lines, Obtain the data signal 31, the clock signal 32 and the identity data 33 from the data bus 3, and the light patterns 121 of the receivers 5 and the initiator 4 are in synchronous, asynchronous or low power mode 1215 performs light flashing, and the receivers 5 perform a self flash mode (Self Flash Mode) 13 (as shown in FIG. 5 ) before executing the light flashing.

The plurality of warning lamps (11a~11n) mentioned above set the identity number 122 of each warning lamp (11a~11n) synchronously through the number of the light pattern 121. In general, the identity number can be set to 1. The initiator 4, but the present invention is not self-limiting, each identity number can be set as the initiator 4 through the setting of the control bus 2, for example: the identity numbers 2, 5, 8, etc. are not number 1. It may be used as the initiator 4, and the mode of setting any warning light (11a~11n) with any ID number as the initiator 4 by controlling the bus bar 2 is also protected by the present invention.

In the process of the above-mentioned initiator 4 and the receivers 5 performing synchronous or asynchronous flashing of lights, if the identity change command signal 22 sent by the common control bus 2 is received, the initiator 4 will be executed. change of identity with multiple recipients 5, and specifically for the initiating Before the person 4 and the receivers 5 change their identities, the receivers first suspend the current light pattern 121 and then execute a self-flash mode (Self Flash Mode) 13 (as shown in Figure 6) to control the bus 2. Re-send an initial command signal 21 to inform multiple warning lights (11a~11n), set the light pattern 121 and start from 1 to sequentially number each warning light (11a~11n), and use the light pattern 121 number to set the identity number 122 of each warning light (11a~11n) synchronously.

Please refer to Figure 4, which is the method for controlling the warning light to enter the low power mode of the present invention, which includes the following steps:

Step 61: Receive an initial command to set a signal mode for multiple warning lights, and number each warning light sequentially starting from 1, and use the light pattern number to synchronously set the identity number of each warning light.

Step 62: Set the predetermined ID numbers of these warning lights as an initiator, and set the remaining ID numbers as a receiver.

Step 63: Receive an initial command signal from the control bus through the signal line of the warning light set as the initiator, and transmit a data signal, a clock signal and an identity data from the data bus, and by The light signal mode selects a low power mode for light flashing. For the warning light set as the initiator, before the low power mode is selected from the light signal mode to flash the light, the data initialization of an electronic erasable read-only memory is carried out first.

Step 64: Obtain the data signal, the clock signal and the identity data from the data bus through the signal lines of the warning lights set as receivers, and the lights of the receivers and the initiator In the signal mode, the light flashes in the low power mode, and one of the control circuits for implementing the low power mode includes an active switch, which receives the low power signal transmitted from the initiator. After the power mode command, a conduction state is formed, and a drop resistor electrically connected to the active switch reduces the passing current to a predetermined ratio, and the reduced current is sent to multiple receivers to follow the initiator to perform low power mode and reduce the brightness of these warning lights.

Step 65: Whether the common control bus of the initiator and the receivers receives a change identity command signal, if yes, execute step 61; otherwise, continue to execute the low power mode. Before the initiator and the receivers change their identities, the receivers first suspend the current light pattern and then execute a self-flashing pattern.

From the above-mentioned disclosure in Figures 1 to 8, it can be understood that the present invention is a method of controlling the warning lights to enter the low power mode, including the following steps: setting the predetermined identity number of a plurality of warning lights as the first one, and the remaining identity numbers Set as a receiver; the warning light set as the initiator receives an initial command signal from the control bus through its signal line, and transmits a data signal, a clock signal and an identity data from the data bus , and select a low power mode from the light mode to flash the light; the warning lights set as receivers get the data signal, the clock signal and the identity data from the data bus through their signal lines , and the light pattern of the receivers and the initiator is flashing in the low power mode, and a control circuit for implementing the low power mode includes an active switch, the active switch receives the signal from the initiator After transmitting the low power mode command, a conduction state is formed, and a drop resistor electrically connected to the active switch reduces the passing current to a predetermined ratio, and the reduced current is sent to multiple receivers to follow the initiator Execute low power mode and reduce the brightness of these warning lights. Through the control circuit, the current flowing into the multiple warning lights is limited, so that the multiple warning lights enter the low power mode and their lumens are lowered, so as to match the brightness of vehicles equipped with multiple warning lights when performing duties at night. Dazzling, and at the same time prolong the service life of the warning light and its power supply module. this invention It has excellent practicability when applied to vehicles equipped with warning lights (such as: fire trucks, ambulances and police vehicles), so a patent application is filed to seek patent protection.

The above is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Therefore, all simple modifications and equivalent structural changes made by using the description and drawings of the present invention should be included in the present invention in the same way. Within the scope of the patent, I will cooperate with Chen Ming.

To sum up, the above method of controlling the warning light to enter the low power mode of the present invention can really achieve its effect and purpose when used, so the present invention is an invention with excellent practicability, and meets the requirements of the invention patent application. I filed an application in accordance with the law, and hope that the trial committee will approve this case as soon as possible to protect the inventor's hard work. If the Junju trial committee has any doubts, please feel free to send a letter to instruct. The inventor will do his best to cooperate, and I really appreciate it.

61: Receive a start command to set multiple warning lights to set a light pattern, start from 1 and carry out the numbering of each warning light in sequence, and use the light pattern number to set the identity number of each warning light synchronously

62: Set the predetermined ID numbers of these warning lights as an initiator, and set the remaining ID numbers as a receiver

63: The warning lamp which is set as the initiator receives an initial command signal from the control bus through its signal line, and transmits a data signal, a clock signal and an identity data from the data bus, and is controlled by the Light mode select a low power mode for light flashing

64: Obtain the data signal, the clock signal and the identity data from the data bus through the signal lines of the warning lights set as receivers, and the lights of the receivers and the initiator The light flashes in the low-power mode, and one of the control circuits for implementing the low-power mode includes an active switch. A drop resistor electrically connected to the active switch reduces the passing current to a predetermined ratio, and after the reduction, the current is sent to multiple receivers to follow the initiator to perform low power mode and reduce the brightness of these warning lights

65: Whether the common control bus of the initiator and the receivers receives a change identity command signal

Claims (9)

A method for controlling a warning light to enter a low-power mode, which includes a warning light group with a plurality of warning lights, and each of the warning lights is electrically connected to a control bus bar and a data bus bar through a signal line, the warning light group After startup, the following control steps are included: A. Receive an initial command to set a signal mode for these warning lights, and number each warning light sequentially starting from 1, and use the light pattern number to set the identity number of each warning light synchronously; B. Set the predetermined identity numbers of these warning lights as an initiator, and set the remaining identity numbers as a receiver; C. The warning light set as the initiator receives an initial command signal from the control bus through its signal line, and transmits a data signal, a clock signal and an identity data from the data bus, and is controlled by the Select a low power mode for the light signal mode to flash the light; D. The data signal, the clock signal and the identity data are obtained from the data bus through the signal lines of the warning lights set as receivers, and the lights of the receivers and the initiator The light flashes in the low-power mode, and one of the control circuits for implementing the low-power mode includes an active switch. A drop resistor electrically connected to the active switch reduces the passing current to a predetermined ratio, and the reduced current is sent to multiple receivers to follow the initiator to perform a low power mode and reduce the brightness of these warning lights; and E. Whether the common control bus of the initiator and the receivers receives a change If yes, execute step A; otherwise, continue to execute the low power mode. The method for controlling a warning light to enter a low-power mode as described in claim 1, wherein the light pattern includes a synchronous flashing, an interlaced flashing, a polling flashing, a recursive flashing and the low-power mode. The method for controlling the warning lights to enter the low power mode as described in claim 1, wherein the warning lights include a circuit board, and a plurality of light-emitting diodes and at least one electronically erasable read-only memory are arranged on the circuit board body, and a plurality of metal contacts for electrical connection of a plurality of signal lines. The method for controlling the warning light to enter the low power mode as described in claim 1, wherein in the step C, the warning light that is set as the initiator, before selecting one of the light signal modes to flash the light, first perform Data initialization of electronically erasable read-only memory. The method for controlling a warning light to enter a low-power mode as described in Claim 1, wherein the receivers execute a self-flash mode before executing the light flashing. The method for controlling the warning light to enter the low power mode as described in claim 1, wherein in the step D, the warning lights set as receivers do not receive any signal from the control bus and the data bus through their signal lines Previously, the warning lights set as receivers flashed according to the light pattern stored in an electronically erasable read-only memory. The method for controlling the warning light to enter the low power mode as described in claim 1, wherein in the step D, the control circuit is provided with two voltage divider resistors on its input side, and a voltage-stabilizing resistor is connected in parallel with one of the voltage divider resistors. A zener diode, and the zener diode is further connected in parallel with the active switch, the active switch is connected in series with the current-dropping resistor, and the current-dropping resistor is further electrically connected to A pin of an LED control integrated circuit with the function of adjusting current, the two pins of the LED controlled integrated circuit are electrically connected with an inductor, a Schottky diode with low conduction voltage, a resistor and An input voltage, and the two pins of the LED control integrated circuit are connected to the ground side with complex bypass capacitors that can reduce noise, and the sensing pins of the LED control integrated circuit are electrically connected The warning light group includes the warning lights to form a control circuit capable of executing the low power mode. The method for controlling a warning light to enter a low-power mode as described in Claim 1, wherein in the step D, the predetermined ratio range of the reduction of the current passing through the current-dropping resistor is 50%-80% of the maximum current value. The method for controlling the warning light to enter the low power mode as described in claim item 1, wherein in step E, before the initiator and the receivers change their identities, the receivers first suspend the current light mode and then execute a Self flash mode.

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