CN215581785U - LED lamp and cascade LED lamp - Google Patents

Abstract

In the LED lamp and the cascade LED lamp, the lamp power supply module comprises a low-voltage power supply module and a lamp power supply module; the low-voltage power supply module is electrically connected with the lamp Internet of things module and converts external input voltage into a low-voltage power supply to supply power to the lamp Internet of things module; the lamp power supply module is electrically connected with the lamp illumination module, external input voltage is converted into electricity utilization voltage of the lamp illumination module in the LED lamp, and power is supplied to the lamp illumination module; the LED lamp is electrically connected with another external LED lamp or a control device through the lamp Internet of things module. Through lamps and lanterns thing networking module, can transmit the luminance control signal of this level to next level LED lamps and lanterns in proper order, can conveniently carry out the luminance control of batch unitized LED lamps and lanterns, especially the cascade LED lamps and lanterns in the plant factory, avoided the loaded down with trivial details of every independent LED lamps and lanterns operation, can high-efficiently adjust luminance in batches.

Description

LED lamp and cascade LED lamp

Technical Field

The utility model belongs to the technical field of Internet of things and lighting devices, and particularly relates to a lamp Internet of things interface, a lamp Internet of things module, a cascade dimming lamp and a lamp Internet of things system.

Background

In the prior art, group LED lamp control generally provides an independent wireless network access capability for individual LED lamps, and the server is connected to each LED lamp to implement dimming control of each lamp.

In practical applications, such as the control of groups of luminaires in agricultural plants, the prior art solutions, while enabling individual control of the brightness and chromaticity of each luminaire, are very time-consuming and labor-intensive to override each individual LED luminaire individually; and configuring an independent wireless network access capability for each lamp also increases the control cost of the LED lamp.

Therefore, a simple control device and method that can meet the above application scenarios and solve batch grouping of lamps at low cost are needed.

The noun explains:

the LED is an abbreviation of light emitting diode, and the chinese meaning is LED.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of avoiding the defects of troublesome regulation and control and high cost of grouped lamps in the prior art, and provides a lamp Internet of things module, a lamp Internet of things system, a lamp Internet of things connection method and a cascade LED lamp.

The utility model solves the technical scheme that the LED lamp comprises a lamp power supply module, a lamp lighting module and a lamp Internet of things module; the lamp power supply module comprises a low-voltage power supply module and a lamp power supply module; the low-voltage power supply module is electrically connected with the lamp Internet of things module and converts external input voltage into a low-voltage power supply to supply power to the lamp Internet of things module; the lamp power supply module is electrically connected with the lamp illumination module, external input voltage is converted into electricity utilization voltage of the lamp illumination module in the LED lamp, and power is supplied to the lamp illumination module; the LED lamp is electrically connected with another external LED lamp or a control device through the lamp Internet of things module; the lamp Internet of things module comprises a PWM signal receiving and amplifying module, a PWM signal grouping module and a lamp control module; the PWM signal receiving and amplifying module and the PWM signal grouping module are electrically connected with a low-voltage power supply module in the lamp power supply module to obtain electric energy; the PWM signal grouping module is electrically connected with the lamp control module; the lamp control module is electrically connected with the lamp lighting module; the PWM signal receiving and amplifying module comprises a signal input interface, and the signal input interface is electrically connected with an external signal source and used for receiving a group of externally input PWM signals; the group of PWM signals at least comprises a path of PWM signal; the output end of the PWM signal receiving and amplifying module is electrically connected with the PWM signal grouping module, and each externally input PWM signal is amplified and then input to the PWM signal grouping module; the PWM signal grouping module divides each input PWM signal into two paths of PWM signals; one path of PWM signal output by the PWM signal grouping module is output outwards through the signal output interface; and the other path of PWM signal output from the PWM signal grouping module is transmitted to the lamp control module, and the lamp control module outputs a lamp control signal.

The lamp lighting module comprises a plurality of LED lamp bars; two ends of each LED lamp strip are respectively fixedly connected with the two slotted frames; the lamp Internet of things module is fixed in the slotted frame on one side; still be provided with the frame lid on the tape slot frame, the frame lid covers lamps and lanterns thing networking module main part in the tape slot frame, makes the external interface on the lamps and lanterns thing networking module outwards.

The external interface on the lamp Internet of things module comprises a signal output interface and a signal input interface; the lamp Internet of things module is also provided with an internal interface, and the internal interface comprises a power supply interface and a lamp control interface; the power interface comprises a low-voltage power supply positive terminal and a ground terminal, and the lamp control interface comprises a DIM brightness control terminal for transmitting a PWM pulse width modulation current signal; the lamp internet of things module is electrically connected with the lamp power supply module through the power supply interface.

The technical scheme for solving the problems is that the cascade LED lamp comprises at least two LED lamps; the upper-level LED lamp and the lower-level LED lamp are cascaded through a lamp Internet of things module in the LED lamp; and the signal output interface of the lamp Internet of things module in the upper LED lamp is electrically connected with the signal input interface of the lamp Internet of things module in the lower LED lamp.

A signal output interface of a lamp internet-of-things module in the upper-level LED lamp is electrically connected with a signal input interface of a lamp internet-of-things module in the lower-level LED lamp through a direct connection signal wire; each group of PWM signals comprises N PWM signals, and N is a natural number which is more than or equal to 1 and less than or equal to 8; the receiving signal interface and the output signal interface comprise N paths of direct connection signal lines which are respectively corresponding to each path of PWM signal transmission.

The receiving signal interface and the output signal interface are both RJ45 interfaces; the signal output interface of the lamp Internet of things module in the upper LED lamp is connected with the signal input interface of the lamp Internet of things module in the lower LED lamp through a direct network cable; any N terminals in eight signal terminals in the RJ45 interface are used for transmitting N PWM signals respectively.

The lamp Internet of things module comprises an Internet of things main control module; the Internet of things main control module is electrically connected with the PWM signal receiving and amplifying module; the Internet of things main control module monitors whether the PWM signal receiving and amplifying module receives an externally input PWM signal or not, and preferentially selects the externally input PWM signal to be used as a control signal of the Internet of things module.

The lamp Internet of things module comprises an external knob position detection module and a PWM signal amplification module; the Internet of things master control module also comprises a PWM signal generation submodule; the Internet of things main control module is respectively and electrically connected with the external knob position detection module and the PWM signal amplification module; when the Internet of things main control module monitors that the PWM signal receiving and amplifying module does not receive an externally input PWM signal, the external knob position detection module obtains an externally input knob control signal through position detection of an external brightness control knob and inputs the externally input knob control signal to the Internet of things main control module; the Internet of things main control module starts an internal PWM signal generation sub-module to generate a PWM control signal corresponding to the knob control signal; the PWM control signal is input to the PWM signal grouping module after passing through the PWM signal amplifying module.

In the lamp Internet of things module, the lamp control module is a lamp brightness control module; the PWM signal receiving and amplifying module receives a path of externally input PWM signals; and one path of PWM signal output by the PWM signal receiving and amplifying module is output to the lower-level Internet of things module through the signal output interface and is used for controlling the lamp brightness of the lower-level Internet of things module.

In the lamp Internet of things module, the lamp control module is a lamp color temperature control module; the PWM signal receiving and amplifying module receives a group of PWM signals input from the outside; a group of PWM signals output by the PWM signal receiving and amplifying module are transmitted to the lamp color temperature control module, and a group of lamp color temperature control signals are output by the lamp color temperature control module; and the other group of PWM signals output by the PWM signal receiving and amplifying module are output to the lower-level Internet of things module through the signal output interface and are used for controlling the color temperature of the lower-level Internet of things module.

In the lamp Internet of things module of the first-stage LED lamp, only a signal output interface is arranged, and a signal input interface is not arranged; the lamp Internet of things module of the first-stage LED lamp comprises an external knob position detection module and a PWM signal amplification module; the Internet of things master control module also comprises a PWM signal generation submodule; the networking main control module is respectively and electrically connected with the external knob position detection module and the PWM signal amplification module; the external knob position detection module acquires an externally input knob control signal through position detection of an external brightness control knob and inputs the externally input knob control signal to the Internet of things main control module; the Internet of things main control module starts an internal PWM signal generation sub-module to generate a PWM control signal corresponding to the knob control signal; the PWM control signal is input to the PWM signal grouping module after passing through the PWM signal amplifying module.

The cascade LED lamp also comprises a main control box, the main control box is electrically connected with the lamp Internet of things module in the first-stage LED lamp, and the main control box obtains power supply through the first-stage lamp Internet of things module in the first-stage LED lamp; meanwhile, the main control box outputs PWM signals to a lamp internet of things module in the first-stage LED lamp to control all LED lamps behind the first-stage LED lamp.

An uplink control interface is arranged on the Internet of things module of the first-stage LED lamp; the main control box is provided with a main control interface; the uplink control interface and the main control interface are both RJ45 interfaces; the uplink control interface is connected with the main control interface through a direct connection network cable; any two signal terminals in the RJ45 interface are respectively used as a power supply and a ground; any one of the signal terminals in the RJ45 interface is used for PWM signal transmission.

The main control box comprises a wireless network module, and the wireless network module is in wireless connection communication with external wireless equipment to obtain an external control instruction.

Compared with the prior art, the utility model has the beneficial effects that: 1. the LED lamps at each stage are provided with the lamp Internet of things module, and the lamp Internet of things module is also provided with the PWM signal receiving module and the lower-stage PWM signal output module, so that the brightness control signals of the LED lamps at the current stage can be sequentially transmitted to the LED lamps at the next stage, the brightness control of the LED lamps grouped in batches can be conveniently carried out, and particularly, the cascaded LED lamps in a plant factory avoid the complexity of operating each single LED lamp and can efficiently adjust the brightness in batches; the PWM signal receiving and amplifying module and the independent PWM signal can ensure the driving capability of the output signal of the current stage and the driving capability when the PWM signal is transmitted to the next stage, so that the reliability of the signal transmission process is high; 3. the arrangement of the external knob position detection module and the PWM signal generation module enables the adjustment mode of the lamp to be diversified, and the brightness of the lamp can be adjusted through the knob on the lamp and also can be adjusted through the mode of inputting the PWM signal; the current-stage brightness regulation and control signal is used for regulating the brightness of the current LED lamp and is also used for regulating the brightness of the subsequent LED lamps at all stages; 4. when a PWM control signal is input from the outside, the signal is preferentially selected for control, so that the consistency of brightness control of batch-grouped LED lamps is ensured; 5. the cascade connection of the upper-level LED lamp to the lower-level LED lamp is realized only by transmitting one path of PWM signals, the signal transmission mode is simplified, and the cascade networking of the lamps can be completed by using a universal low-cost network interface and a direct connection line through the transmission, so that the low-cost and high-efficiency cascade lamp is formed; 6. the main control box can obtain power supply from a lamp Internet of things module in the lamp, complex charging management of the main control box is avoided, and the main control box can be plugged into any one node in a plug-and-play mode on site to manage subsequent lamps; 7. only one path of PWM signal is set during brightness control; when the color temperature is controlled, a plurality of paths of PWM signals can be set, and the group of PWM control signals are transmitted downwards by using the same interface; 8. the lamp internet of things module is integrated in the lamp by each lamp, and an external control module and a power supply are not required to be independently arranged.

Drawings

FIG. 1 is a schematic block diagram of one embodiment of an LED light fixture;

FIG. 2 is an exploded view of an embodiment of an LED lamp;

fig. 3 is one of schematic diagrams of a luminaire internet of things module;

fig. 4 is a second schematic diagram of the luminaire internet of things module;

FIG. 5 is a second exploded view of an embodiment of an LED lamp;

fig. 6 is a partial enlarged view of a portion G in fig. 5;

FIG. 7 is a schematic diagram of a cascaded LED luminaire incorporating a luminaire Internet of things system;

fig. 8 is a partially enlarged view of portion F of fig. 7;

fig. 9 is one of schematic block diagrams of a luminaire internet of things module;

fig. 10 is a schematic connection diagram of the lamp internet of things module and the main control box.

Detailed Description

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In the embodiment of the LED lamp shown in fig. 1 to 3 and 5, the LED lamp includes a lamp power module, a lamp lighting module and a lamp internet of things module; the lamp power supply module comprises a low-voltage power supply module and a lamp power supply module; the low-voltage power supply module is electrically connected with the lamp Internet of things module and converts external input voltage into a low-voltage power supply to supply power to the lamp Internet of things module; the lamp power supply module is electrically connected with the lamp illumination module, external input voltage is converted into electricity utilization voltage of the lamp illumination module in the LED lamp, and power is supplied to the lamp illumination module; the LED lamp is electrically connected with another external LED lamp or a control device through the lamp Internet of things module. The low-voltage power supply module is electrically connected with the lamp Internet of things module through a first connecting wire 11; the lamp power supply module and the lamp lighting module are electrically connected through a second connection line 12. The lamp internet of things module can obtain power supply from a power supply of the lamp, independent external power supply is not needed, and the lamp internet of things module is convenient to use.

As shown in fig. 2, 3 and 5, the luminaire lighting module comprises a plurality of LED light bars 50; two ends of each LED light bar 50 are respectively fixedly connected with the two slotted frames 60; the lamp internet of things module 30 is fixed in the slotted frame 60 on one side; the slotted frame is further provided with a frame cover 65, the frame cover 65 covers the main body of the lamp internet of things module in the slotted frame 60, and a frame cover hole 652 is formed in the frame cover 65, so that the external interface 32 on the lamp internet of things module penetrates through the frame cover hole 652 and faces outwards.

As shown in fig. 2, 3 and 5, the external interface 32 on the lamp internet of things module includes a signal output interface 321 and a signal input interface 322; the lamp internet of things module is also provided with an internal interface 333, and the internal interface comprises a power supply interface and a lamp control interface; the power interface comprises a low-voltage power positive terminal 331 and a ground terminal 332, and the lamp control interface comprises a DIM brightness control terminal 333 for transmitting PWM pulse width modulation current signals; the lamp internet of things module is electrically connected with the lamp power supply module through the power supply interface.

As shown in fig. 9, the lamp internet of things module includes a PWM signal receiving and amplifying module, a PWM signal grouping module, and a lamp control module; the PWM signal receiving and amplifying module and the PWM signal grouping module are electrically connected with a low-voltage power supply module in the lamp power supply module to obtain electric energy; the PWM signal grouping module is electrically connected with the lamp control module; the lamp control module is electrically connected with the lamp lighting module; the PWM signal receiving and amplifying module comprises a signal input interface, and the signal input interface is electrically connected with an external signal source and used for receiving a group of externally input PWM signals; the group of PWM signals at least comprises a path of PWM signal; the output end of the PWM signal receiving and amplifying module is electrically connected with the PWM signal grouping module, and each externally input PWM signal is amplified and then input to the PWM signal grouping module; the PWM signal grouping module divides each input PWM signal into two paths of PWM signals; one path of PWM signal output by the PWM signal grouping module is output outwards through the signal output interface; and the other path of PWM signal output from the PWM signal grouping module is transmitted to the lamp control module, and the lamp control module outputs a lamp control signal. The PWM signal amplification can ensure the driving capability of the current-stage output signal and increase the signal transmission distance; the driving capability of the PWM signal when being transmitted to the next stage is also ensured, and the reliability of the signal transmission process is high.

As shown in fig. 9, the lamp internet of things module includes an internet of things main control module; the Internet of things main control module is electrically connected with the PWM signal receiving and amplifying module; the Internet of things main control module monitors whether the PWM signal receiving and amplifying module receives an externally input PWM signal or not, and preferentially selects the externally input PWM signal to be used as a control signal of the Internet of things module.

As shown in fig. 7 to 9, the lamp internet of things module includes an external knob position detection module and a PWM signal amplification module; the Internet of things master control module also comprises a PWM signal generation submodule; the Internet of things main control module is respectively and electrically connected with the external knob position detection module and the PWM signal amplification module; when the Internet of things main control module monitors that the PWM signal receiving and amplifying module does not receive an externally input PWM signal, the external knob position detection module obtains an externally input knob control signal through position detection of an external brightness control knob and inputs the externally input knob control signal to the Internet of things main control module; the Internet of things main control module starts an internal PWM signal generation sub-module to generate a PWM control signal corresponding to the knob control signal; the PWM control signal is input to the PWM signal grouping module after passing through the PWM signal amplifying module.

The arrangement of the external knob position detection module and the PWM signal generation module enables the lamp adjusting mode to be diversified, the lamp brightness can be adjusted through the knob on the lamp, and the brightness can also be adjusted through the mode of inputting the PWM signal. And the brightness control signal of the current stage is used for not only brightness control of the current LED lamp, but also brightness control of the subsequent LED lamps of all stages.

In a luminaire internet of things module of a cascade LED luminaire, which is not shown in some drawings, the luminaire control module is a luminaire brightness control module; the PWM signal receiving and amplifying module receives a path of externally input PWM signals; and one path of PWM signal output by the PWM signal receiving and amplifying module is output to the lower-level Internet of things module through the signal output interface and is used for controlling the lamp brightness of the lower-level Internet of things module.

In a luminaire internet-of-things module of a cascade LED luminaire which is not shown in some drawings, the luminaire control module is a luminaire color temperature control module; the PWM signal receiving and amplifying module receives a group of PWM signals input from the outside; a group of PWM signals output by the PWM signal receiving and amplifying module are transmitted to the lamp color temperature control module, and a group of lamp color temperature control signals are output by the lamp color temperature control module; and the other group of PWM signals output by the PWM signal receiving and amplifying module are output to the lower-level Internet of things module through the signal output interface and are used for controlling the color temperature of the lower-level Internet of things module.

In some cascade LED lamps not shown in the drawings, only a signal output interface is arranged in a lamp Internet of things module of a first-stage LED lamp, and a signal input interface is not arranged; the lamp Internet of things module of the first-stage LED lamp comprises an external knob position detection module and a PWM signal amplification module; the Internet of things master control module also comprises a PWM signal generation submodule; the networking main control module is respectively and electrically connected with the external knob position detection module and the PWM signal amplification module; the external knob position detection module acquires an externally input knob control signal through position detection of an external brightness control knob and inputs the externally input knob control signal to the Internet of things main control module; the Internet of things main control module starts an internal PWM signal generation sub-module to generate a PWM control signal corresponding to the knob control signal; the PWM control signal is input to the PWM signal grouping module after passing through the PWM signal amplifying module.

As shown in fig. 7 and 10, the cascade LED lamp further includes a main control box, the main control box is electrically connected to the lamp internet of things module in the first-stage LED lamp, and the main control box obtains power supply through the first-stage lamp internet of things module in the first-stage LED lamp; meanwhile, the main control box outputs PWM signals to a lamp internet of things module in the first-stage LED lamp to control all LED lamps behind the first-stage LED lamp.

As shown in fig. 7 and 10, an uplink control interface is arranged on the internet of things module of the first-stage LED lamp; the main control box is provided with a main control interface; the uplink control interface and the main control interface are both RJ45 interfaces; the uplink control interface is connected with the main control interface through a direct connection network cable; any two signal terminals in the RJ45 interface are respectively used as a power supply and a ground; any one of the signal terminals in the RJ45 interface is used for PWM signal transmission. The main control box comprises a wireless network module, and the wireless network module is in wireless connection communication with external wireless equipment to obtain an external control instruction.

The setting of main control box makes lamps and lanterns thing networking system have more intelligent control terminal simultaneously, can insert outside wireless network through main control box, accepts the control signal who comes from transmitting in the wireless network. The wireless network can be connected with independent terminals such as a mobile phone and the like, and is beneficial for a manager to control the cascade lamp anytime and anywhere; the wireless network can also be connected with a server or a service center and other comprehensive terminals, and large-scale control of the cascaded lamps is facilitated. The management efficiency of the lamp internet of things is greatly improved, and the networking cost is extremely low. The main control box can obtain power supply from the lamp internet of things module in the lamp, complex charging management of the main control box is avoided, and the main control box can be plugged into any one node in a plug-and-play mode on site to manage subsequent lamps. The universal interface enables networking to be more convenient and faster.

In the embodiment of the luminaire internet of things system shown in fig. 7 and 8, reference numerals 91, 92, 93, and M are all single LED luminaires, the luminaire internet of things modules on each luminaire are all provided with RJ45 interfaces, and the luminaire internet of things modules are connected through direct network cables. Reference numeral 75 in the figure is a knob for adjusting the brightness or color temperature of the current LED lamp. Reference numeral 80 is a main control box.

In the embodiment of the cascade LED lamp as shown in FIG. 7, at least two LED lamps are included; the upper-level LED lamp and the lower-level LED lamp are cascaded through a lamp Internet of things module in the LED lamp; and the signal output interface of the lamp Internet of things module in the upper LED lamp is electrically connected with the signal input interface of the lamp Internet of things module in the lower LED lamp.

A signal output interface of a lamp internet-of-things module in the upper-level LED lamp is electrically connected with a signal input interface of a lamp internet-of-things module in the lower-level LED lamp through a direct connection signal wire; each group of PWM signals comprises N PWM signals, and N is a natural number which is more than or equal to 1 and less than or equal to 8; the receiving signal interface and the output signal interface comprise N paths of direct connection signal lines which are respectively corresponding to each path of PWM signal transmission.

The receiving signal interface and the output signal interface are both RJ45 interfaces; the signal output interface of the lamp Internet of things module in the upper LED lamp is connected with the signal input interface of the lamp Internet of things module in the lower LED lamp through a direct network cable; any N terminals in eight signal terminals in the RJ45 interface are used for transmitting N PWM signals respectively.

The color temperature adjustment can adopt a group of PWM signals, and the brightness adjustment can adopt only one PWM signal. No matter a group of PWM signals or one path of PWM signals, the transmission of control signals can be realized by adopting simple signal connection and transmission relation; and the connection can be completed by utilizing a mature RJ45 interface and a network direct connection, so that each lamp can form a simple lamp Internet of things system capable of being controlled in a networking way, and a wireless network or other wired network interfaces do not need to be configured for each lamp. Meanwhile, the connection of the main control box enables the lamp Internet of things system to have wireless network connection capability, and the network in the prior art can be conveniently used for remote or wireless control. Furthermore, the main control box can be powered through the lamp internet of things module, so that the main control box can be connected to any node at any time for control, the limitation and influence of the power supply state of the main control box are avoided, and the application in a plant factory is very convenient. Different plants need different illumination intensity and illumination chromaticity, and the illumination intensity and the illumination chromaticity of the corresponding areas can be flexibly adjusted according to actual conditions.

In the embodiments shown in fig. 7 and 10, an uplink control interface is arranged on the first superior lamp internet of things module; the main control box is provided with a main control interface; the uplink control interface and the main control interface are both RJ45 interfaces; the uplink control interface is connected with the main control interface through a direct connection network cable; any two signal terminals in the RJ45 interface are respectively used as a power supply and a ground; any one of the signal terminals in the RJ45 interface is used for PWM signal transmission.

When the PWM control signal is input from the outside, the signal is preferentially selected to be used for control, and the consistency of brightness control of the LED lamps grouped in batches is ensured. The upper-level lamp internet-of-things module only needs to transmit one path of PWM (pulse-width modulation) signal to the lower-level lamp internet-of-things module for controlling the lower-level lamp, the signal transmission mode is simplified, the lamp cascading networking can be completed by using a universal low-cost network interface and a direct connection line for transmission, and a low-cost and high-efficiency cascading lamp internet-of-things system is formed. The cascade networking of the cascade LED lamps with low cost and high efficiency is realized by using a universal RJ45 interface and a direct connection network cable, and a cascade lamp Internet of things system with low cost and high efficiency is formed. The connection mode has the advantages that the signal connection relation is extremely simple, the connected interface is universal, the connection is very convenient and easy to obtain, and the cost is low; the high-efficiency networking can be completed at low cost; and single signal transmission, no mutual interference of signals and high reliability. In practice, the maximum number of cascaded LED lamps can reach 500, and the lighting cascade requirement of a common plant factory can be met.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the contents of the specification and drawings, or applied directly or indirectly to other related technical fields, are included in the scope of the present invention.

Claims (14)

1. An LED lamp is characterized in that the LED lamp is provided with a plurality of LED light sources,

the system comprises a lamp power supply module, a lamp lighting module and a lamp Internet of things module;

the lamp power supply module comprises a low-voltage power supply module and a lamp power supply module;

the low-voltage power supply module is electrically connected with the lamp Internet of things module and converts external input voltage into a low-voltage power supply to supply power to the lamp Internet of things module;

the lamp power supply module is electrically connected with the lamp illumination module, external input voltage is converted into electricity utilization voltage of the lamp illumination module in the LED lamp, and power is supplied to the lamp illumination module;

the LED lamp is electrically connected with another external LED lamp or a control device through the lamp Internet of things module;

the lamp Internet of things module comprises a PWM signal receiving and amplifying module, a PWM signal grouping module and a lamp control module; the PWM signal receiving and amplifying module and the PWM signal grouping module are electrically connected with a low-voltage power supply module in the lamp power supply module to obtain electric energy; the PWM signal grouping module is electrically connected with the lamp control module; the lamp control module is electrically connected with the lamp lighting module;

the PWM signal receiving and amplifying module comprises a signal input interface, and the signal input interface is electrically connected with an external signal source and used for receiving a group of externally input PWM signals; the group of PWM signals at least comprises a path of PWM signal; the output end of the PWM signal receiving and amplifying module is electrically connected with the PWM signal grouping module, and each externally input PWM signal is amplified and then input to the PWM signal grouping module;

The PWM signal grouping module divides each input PWM signal into two paths of PWM signals; one path of PWM signal output by the PWM signal grouping module is output outwards through the signal output interface; and the other path of PWM signal output from the PWM signal grouping module is transmitted to the lamp control module, and the lamp control module outputs a lamp control signal.

2. The LED light fixture of claim 1,

the lamp lighting module comprises a plurality of LED lamp bars; two ends of each LED lamp strip are respectively fixedly connected with the two slotted frames; the lamp Internet of things module is fixed in the slotted frame on one side; still be provided with the frame lid on the tape slot frame, the frame lid covers lamps and lanterns thing networking module main part in the tape slot frame, makes the external interface on the lamps and lanterns thing networking module outwards.

3. The LED light fixture of claim 2,

the external interface on the lamp Internet of things module comprises a signal output interface and a signal input interface;

the lamp Internet of things module is also provided with an internal interface, and the internal interface comprises a power supply interface and a lamp control interface; the power interface comprises a low-voltage power supply positive terminal and a ground terminal, and the lamp control interface comprises a DIM brightness control terminal for transmitting a PWM pulse width modulation current signal; the lamp internet of things module is electrically connected with the lamp power supply module through the power supply interface.

4. A cascade LED lamp is characterized in that,

comprising at least two LED luminaires according to any of the claims 1 to 3;

the upper-level LED lamp and the lower-level LED lamp are cascaded through a lamp Internet of things module in the LED lamp;

and the signal output interface of the lamp Internet of things module in the upper LED lamp is electrically connected with the signal input interface of the lamp Internet of things module in the lower LED lamp.

5. The cascaded LED light fixture of claim 4,

a signal output interface of a lamp internet-of-things module in the upper-level LED lamp is electrically connected with a signal input interface of a lamp internet-of-things module in the lower-level LED lamp through a direct connection signal wire;

each group of PWM signals comprises N PWM signals, and N is a natural number which is more than or equal to 1 and less than or equal to 8;

the receiving signal interface and the output signal interface comprise N paths of direct connection signal lines which are respectively corresponding to each path of PWM signal transmission.

6. The cascaded LED light fixture of claim 5,

the receiving signal interface and the output signal interface are both RJ45 interfaces;

the signal output interface of the lamp Internet of things module in the upper LED lamp is connected with the signal input interface of the lamp Internet of things module in the lower LED lamp through a direct network cable; any N terminals in eight signal terminals in the RJ45 interface are used for transmitting N PWM signals respectively.

7. The cascaded LED light fixture of claim 4,

the lamp Internet of things module comprises an Internet of things main control module;

the Internet of things main control module is electrically connected with the PWM signal receiving and amplifying module;

the Internet of things main control module monitors whether the PWM signal receiving and amplifying module receives an externally input PWM signal or not, and preferentially selects the externally input PWM signal to be used as a control signal of the Internet of things module.

8. The cascaded LED light fixture of claim 7,

the lamp Internet of things module comprises an external knob position detection module and a PWM signal amplification module;

the Internet of things master control module also comprises a PWM signal generation submodule;

the Internet of things main control module is respectively and electrically connected with the external knob position detection module and the PWM signal amplification module;

when the Internet of things main control module monitors that the PWM signal receiving and amplifying module does not receive an externally input PWM signal, the external knob position detection module obtains an externally input knob control signal through position detection of an external brightness control knob and inputs the externally input knob control signal to the Internet of things main control module; the Internet of things main control module starts an internal PWM signal generation sub-module to generate a PWM control signal corresponding to the knob control signal; the PWM control signal is input to the PWM signal grouping module after passing through the PWM signal amplifying module.

9. The cascaded LED light fixture of claim 4,

in the lamp Internet of things module, the lamp control module is a lamp brightness control module;

the PWM signal receiving and amplifying module receives a path of externally input PWM signals;

and one path of PWM signal output by the PWM signal receiving and amplifying module is output to the lower-level Internet of things module through the signal output interface and is used for controlling the lamp brightness of the lower-level Internet of things module.

10. The cascaded LED light fixture of claim 4,

in the lamp Internet of things module, the lamp control module is a lamp color temperature control module;

the PWM signal receiving and amplifying module receives a group of PWM signals input from the outside;

a group of PWM signals output by the PWM signal receiving and amplifying module are transmitted to the lamp color temperature control module, and a group of lamp color temperature control signals are output by the lamp color temperature control module;

and the other group of PWM signals output by the PWM signal receiving and amplifying module are output to the lower-level Internet of things module through the signal output interface and are used for controlling the color temperature of the lower-level Internet of things module.

11. The cascaded LED light fixture of claim 4,

in the lamp Internet of things module of the first-stage LED lamp, only a signal output interface is arranged, and a signal input interface is not arranged;

The lamp Internet of things module of the first-stage LED lamp comprises an external knob position detection module and a PWM signal amplification module; the Internet of things master control module also comprises a PWM signal generation submodule; the networking main control module is respectively and electrically connected with the external knob position detection module and the PWM signal amplification module;

the external knob position detection module acquires an externally input knob control signal through position detection of an external brightness control knob and inputs the externally input knob control signal to the Internet of things main control module; the Internet of things main control module starts an internal PWM signal generation sub-module to generate a PWM control signal corresponding to the knob control signal; the PWM control signal is input to the PWM signal grouping module after passing through the PWM signal amplifying module.

12. The cascaded LED light fixture of claim 4,

also comprises a main control box which is provided with a main control box,

the main control box is electrically connected with the lamp Internet of things module in the first-stage LED lamp,

the main control box obtains power supply through a first-stage lamp Internet of things module in the first-stage LED lamp;

meanwhile, the main control box outputs PWM signals to a lamp internet of things module in the first-stage LED lamp to control all LED lamps behind the first-stage LED lamp.

13. The cascaded LED light fixture of claim 12,

an uplink control interface is arranged on the Internet of things module of the first-stage LED lamp; the main control box is provided with a main control interface; the uplink control interface and the main control interface are both RJ45 interfaces;

the uplink control interface is connected with the main control interface through a direct connection network cable;

any two signal terminals in the RJ45 interface are respectively used as a power supply and a ground; any one of the signal terminals in the RJ45 interface is used for PWM signal transmission.

14. The cascaded LED light fixture of claim 12,

the main control box comprises a wireless network module, and the wireless network module is in wireless connection communication with external wireless equipment to obtain an external control instruction.

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