A wireless in-band dimming control method

Abstract

The application discloses a wireless same-frequency dimming control method, belongs to the technical field of rescue indicator light control, and comprises a wireless master controller, rescue indicator lights, a driven slave and a wireless same-frequency dimming method. The wireless master controller and the driven slave transmit information through a wireless channel. The wireless master controller is internally provided with a wireless same-frequency dimming control module. The wireless same-frequency dimming method comprises the following steps: field arrangement, channel establishment, light control and same-frequency processing. When the rescue indicator lights need to be arranged at a rescue site, the rescue indicator lights are fixed to specified positions, the wireless master controller sends a same-frequency flickering instruction to the driven slave, the effect of controlling the rescue indicator lights in a same-frequency wireless mode is achieved, the flickering condition is monitored in the driven slave in real time, the flickering condition is fed back to the wireless master controller, the flickering condition is compared by using a master control discrimination module, and a correction flickering instruction is sent to the rescue indicator light with flickering errors, so that the light flickering is kept synchronous.

Description

Technical Field

[0001] This invention relates to the field of rescue indicator light control technology, and in particular to a wireless synchronous dimming control method. Background Technology

[0002] Rescue indicator lights typically consist of red and blue indicator lights and white lighting. At the rescue site, they are controlled by control wires. However, when working in dangerous areas such as fires, landslides, and mudslides, multiple lights are used simultaneously, and the red and blue flashing is not synchronized, which makes the visual effect of rescuers confusing and can easily cause visual fatigue. In addition, multiple light groups need to be switched on and off and dimmed one by one, and the connection of control wires on site is messy and cumbersome to manage.

[0003] Therefore, we propose a wireless same-frequency dimming control method. Summary of the Invention

[0004] The purpose of this invention is to solve the problems of visual fatigue of rescue personnel and cumbersome control and management caused by asynchronous flashing of on-site rescue indicator lights in the prior art, and to propose a wireless synchronous dimming control method.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A wireless synchronous dimming control method includes a wireless master controller, a rescue indicator light, a slave driver, and a wireless synchronous dimming method. The wireless master controller and the slave driver transmit information via a wireless channel. The wireless master controller has a built-in wireless synchronous dimming control module. The wireless synchronous dimming method includes the following steps:

[0007] S1: On-site setup: Fix multiple rescue indicator lights with internal drive slave units to designated locations and mark their fixed coordinates;

[0008] S2: Channel establishment. A communication channel is established between the wireless master controller and the slave controller that drives the marked coordinate point, and a light flashing test command is sent to establish the channel communication connection.

[0009] S3: Lighting control, which sends commands for light flashing and brightness adjustment via a wireless master controller, and receives control signals from multiple slave drives to respond accordingly;

[0010] S4: Same frequency processing. Flashing instructions are set inside multiple drive slaves and the specific flashing situation is transmitted to the wireless master controller through a signal transmitter. The wireless master controller distinguishes the signals sent by multiple drive slaves. When the light delay error of multiple drive slaves is large, a light control correction signal is sent.

[0011] Preferably, the channel between the wireless master controller and the slave controller is a low-frequency fixed channel, and the low-frequency fixed channel is a 2.4G fixed channel.

[0012] Preferably, the wireless synchronous dimming control module consists of a master control identification module, a master control correction module, and a slave feedback module. The master control identification module and the master control correction module are located inside the wireless master controller, and the slave feedback module is located inside the drive slave.

[0013] Preferably, the slave feedback module performs binary encoding on the red, blue, and white lights of the rescue indicator light. When the rescue indicator light is off or no channel is established, it sends a communication failure command to the wireless master controller. When the rescue indicator light is working normally, the wireless master controller sets a sampling period and feeds back the flashing of the lights during the sampling period to the wireless master controller through the slave feedback module.

[0014] Preferably, the binary digital signal is converted into an analog waveform signal by the main control discrimination module inside the wireless master controller, and the waveform is displayed on the display. When the analog waveform signals fed back by multiple rescue indicator lights are inconsistent, the main control correction module sends a shutdown signal to multiple drive slaves and waits for the flashing program to be corrected.

[0015] Preferably, in step S2, the wireless master controller sends the light flashing test command to the driver slave, and the driver slave feeds back the flashing status to the wireless master controller. The wireless master controller determines whether the signal communication has been successfully established through the feedback signal.

[0016] Preferably, in step S3, the flashing of the light is determined by the flashing command stored in the drive slave, and the brightness adjustment of the light is controlled by the PWM pulse width adjustment program stored in the drive slave.

[0017] Preferably, in step S4, the main control identification module in the wireless main control unit identifies the flashing status of multiple sets of rescue indicator lights. When multiple sets of rescue indicator lights are found to be flashing incorrectly, the wireless main control unit sets a flashing correction command to control the rescue indicator light that is flashing incorrectly to execute the flashing correction command and flash.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. By setting up a wireless master controller, rescue indicator lights, and drive slaves to work together, when rescue indicator lights need to be set up at the rescue site, the rescue indicator lights are fixed in a designated position, and the wireless master controller sends a synchronous flashing command to the drive slave, thereby achieving the effect of synchronous wireless control of the rescue indicator lights. This solves the problem mentioned in the background art that the on-site rescue indicator lights are controlled by wired cables, which causes cumbersome control and management.

[0020] 2. By sending control commands at the same frequency, the flashing situation is monitored in real time inside the drive slave unit and fed back to the wireless master unit. The master control identification module compares the flashing situation and sends correction flashing commands to the rescue indicator lights with flashing errors, so that the flashing of the lights is kept synchronized. This solves the problem mentioned in the background technology that the asynchronous flashing of the on-site rescue indicator lights causes visual fatigue of rescue personnel and complicated control and management. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the signal transmission of a wireless same-frequency dimming control method proposed in this invention;

[0022] Figure 2 This is a flowchart of a wireless co-frequency dimming control method proposed in this invention;

[0023] Figure 3 This is a block diagram of the wireless frequency dimming control module in the wireless frequency dimming control method proposed in this invention. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0025] Reference Figure 1-3 A wireless synchronous dimming control method includes a wireless master controller, a rescue indicator light, a drive slave, and a wireless synchronous dimming method. The wireless master controller and the drive slave transmit information through a wireless channel. The wireless master controller has a built-in wireless synchronous dimming control module. The wireless synchronous dimming method includes the following steps:

[0026] S1: On-site setup: Fix multiple rescue indicator lights with internal drive slave units to designated locations and mark their fixed coordinates;

[0027] S2: Channel establishment. A communication channel is established between the wireless master controller and the slave controller that drives the marked coordinate point, and a light flashing test command is sent to establish the channel communication connection.

[0028] S3: Lighting control, which sends commands for light flashing and brightness adjustment via a wireless master controller, and receives control signals from multiple slave drives to respond accordingly;

[0029] S4: Same frequency processing. Flashing instructions are set inside multiple drive slaves and the specific flashing situation is transmitted to the wireless master controller through a signal transmitter. The wireless master controller distinguishes the signals sent by multiple drive slaves. When the light delay error of multiple drive slaves is large, a light control correction signal is sent.

[0030] Through the above technical solution, in step S2, the wireless master controller sends the light flashing test command to the driver slave, and the driver slave feeds back the flashing situation to the wireless master controller. The wireless master controller determines whether the signal communication is successfully established through the feedback signal.

[0031] Based on the above, in step S3, the light flashing is determined by the flashing command stored in the driver slave, and the light brightness adjustment is controlled by the PWM pulse width adjustment program stored in the driver slave;

[0032] Based on the above, in step S4, the main control identification module in the wireless main control unit identifies the flashing status of multiple sets of rescue indicator lights. When multiple sets of rescue indicator lights are found to be flashing incorrectly, the wireless main control unit sets a flashing correction command to control the rescue indicator light that is flashing incorrectly to execute the flashing correction command and flash.

[0033] Specifically, the channel between the wireless master controller and the slave drive uses a low-frequency fixed channel, which is a 2.4G fixed channel.

[0034] By using the above technical solution, the use of a low-frequency fixed channel can reduce the flickering error caused by time delay and ensure that the signals sent by the wireless master to multiple drive slaves are received at the same frequency.

[0035] Specifically, the wireless synchronous dimming control module consists of a master control identification module, a master control correction module, and a slave feedback module. The master control identification module and the master control correction module are located inside the wireless master controller, while the slave feedback module is located inside the drive slave.

[0036] The above technical solution monitors the flashing of the rescue indicator light through the slave feedback module, and sends the flashing during the sampling period to the wireless master controller when the wireless master controller sends the signal to be identified, thus completing the slave feedback signal sampling operation.

[0037] Specifically, the slave feedback module encodes the red, blue, and white lights of the rescue indicator light into binary form. When the rescue indicator light is off or no channel is established, it sends a communication failure command to the wireless master controller. When the rescue indicator light is working normally, the wireless master controller sets a sampling period and feeds back the flashing of the lights during the sampling period to the wireless master controller through the slave feedback module.

[0038] Using the above technical solution, the red, blue, and white lights of the rescue indicator light can be encoded in binary as follows: when the rescue indicator light is off or no communication channel is established, it is encoded as "000"; when the blue light of the rescue indicator light is flashing, it is encoded as "010"; when the red light is flashing, it becomes "101"; and when the white light is flashing, it is encoded as "111". This makes it easy to convert the binary code into an analog signal and determine whether the flashing of the rescue indicator light is normal by observing the characteristics of the waveform.

[0039] Specifically, inside the wireless master controller, the master control discrimination module converts the binary digital signal into an analog waveform signal and displays the waveform on the display. When the analog waveform signals fed back by multiple rescue indicator lights are inconsistent, the master control correction module sends a shutdown signal to multiple drive slaves and waits for the flashing program to be corrected.

[0040] Through the above technical solution, a light flashing preset program is set inside each group of drive slaves. After receiving the flashing command sent by the wireless master controller, the corresponding light flashing command is executed. When the flashing program executed inside the drive slave is incorrect, the master control correction module can send a new correction command to the erroneous rescue indicator light through feedback waveform, so that it keeps flashing the same as the other drive slaves, thus avoiding interference to rescue personnel.

[0041] Furthermore, when the rescue indicator light flashes incorrectly, its ID number is identified, and a dedicated correction flashing command is sent to the slave device via the wireless master controller for this ID number. This avoids affecting the simultaneous execution of correction commands by other slave devices, preventing asynchronous flashing due to time delays caused by multiple channel transmissions.

[0042] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A wireless synchronous dimming control method, comprising a wireless master controller, a rescue indicator light, a drive slave, and a wireless synchronous dimming method, characterized in that, The wireless master controller and the drive slave transmit information through a wireless channel. The wireless master controller is equipped with a wireless synchronous dimming control module. The wireless synchronous dimming control module consists of a master control discrimination module, a master control correction module, and a slave feedback module. The master control discrimination module and the master control correction module are located inside the wireless master controller, and the slave feedback module is located inside the drive slave. The slave feedback module encodes the red, blue, and white lights of the rescue indicator light into binary form. When the rescue indicator light is off or no channel is established, it sends a communication failure command to the wireless master controller. When the rescue indicator light is working normally, the wireless master controller sets a sampling period and feeds back the flashing of the lights during the sampling period to the wireless master controller through the slave feedback module. Inside the wireless master controller, the master control discrimination module converts the binary digital signal into an analog waveform signal and displays the waveform on the display. When the analog waveform signals fed back by multiple rescue indicator lights are inconsistent, the master control correction module sends a shutdown signal to multiple drive slaves and waits for the flashing program to be corrected. The wireless synchronous dimming method includes the following steps: S1: On-site setup: Fix multiple rescue indicator lights with internal drive slave units to designated locations and mark their fixed coordinates; S2: Channel establishment. A communication channel is established between the wireless master controller and the slave controller that drives the marked coordinate point, and a light flashing test command is sent to establish the channel communication connection. S3: Lighting control, which sends commands for light flashing and brightness adjustment via a wireless master controller, and receives control signals from multiple slave drives to respond accordingly; S4: Same frequency processing, setting flashing instructions in multiple drive slaves and transmitting the specific flashing situation to the wireless master controller through a signal transmitter. The wireless master controller distinguishes the signals sent by multiple drive slaves. When the light delay error of multiple drive slaves is large, a light control correction signal is sent. In step S4, the main control identification module in the wireless main control unit identifies the flashing status of multiple sets of rescue indicator lights. When multiple sets of rescue indicator lights are found to be flashing incorrectly, the wireless main control unit sets a flashing correction command to control the rescue indicator light that is flashing incorrectly to execute the flashing correction command and flash.

2. The wireless synchronous dimming control method according to claim 1, characterized in that, The channel between the wireless master controller and the slave controller is a low-frequency fixed channel, and the low-frequency fixed channel is a 2.4G fixed channel.

3. The wireless synchronous dimming control method according to claim 1, characterized in that, In step S2, the wireless master controller sends the light flashing test command to the driver slave, and the driver slave feeds back the flashing status to the wireless master controller. The wireless master controller determines whether the signal communication is successfully established through the feedback signal.

4. The wireless synchronous dimming control method according to claim 1, characterized in that, In step S3, the flashing of the light is determined by the flashing command stored in the driver slave, and the brightness of the light is controlled by the PWM pulse width adjustment program stored in the driver slave.

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