LED lamp with location-based service function

Abstract

The invention discloses an LED lamp with a location-based service function. The LED lamp comprises a shell, and LED lamp beads are arranged on the shell; a wireless radio frequency module, a power supply and an LED driver for driving the LED lamp beads are arranged in the shell, and the wireless radio frequency module is connected with the LED driver; the wireless radio frequency module comprises an MCU, and the MCU is connected with a PWM output circuit, an A / D input circuit and a radio frequency transceiving circuit; the A / D input circuit is connected with a current detection circuit which can be used for collecting the state of the LED lamp beads, and the PWM output circuit is connected with the LED driver; and the MCU is further connected with a memory for storing codes, position information of the LED lamp and lamp information. A dynamic ad hoc network among a plurality of intelligent LED lamps can be achieved through the wireless radio frequency modules, and a special base station is not required during project implementation; the on-off and brightness of all LED lamps in the ad hoc network can be adjusted through communication among the wireless radio frequency modules and the position information in the LEDs; and the LED lamp is simple in structure and powerful in function, and is the development trend of the Internet of Things.

Description

technical field [0001] The invention belongs to the technical field of indoor positioning, and in particular relates to an LED lamp capable of providing location services. Background technique [0002] Existing LED lamps mainly provide lighting functions for users, and some LED lamps on the market only support point-to-point wireless control functions. [0003] The existing LED wireless control and transmission technologies are mainly based on infrared, wifi, bluetooth, zigbee, etc. Infrared technology has strong anti-EMC interference ability, but it can only be controlled within a straight line of sight, and the transmission distance is relatively short; due to the limitation of its own communication mode, Bluetooth cannot meet the multi-point to multi-point networking data transmission capability; WIFI technology and its device function It consumes a lot of power, so it is not suitable for low-power and small data transmission, and it is easily interfered by other WIFI si...

AI Technical Summary

Problems solved by technology

Infrared technology has strong anti-EMC interference ability, but it can only be controlled within a straight line of sight, and the transmission distance is relatively short; due to the limitation of its own communication mode, Bluetooth cannot meet the multi-point to multi-point networking data transmission capability; WIFI technology and its device function High power consumption, not suitable for low power consumption and small data transmission, and it is easily interfered by other WIFI signals

Zigbee technology is a local area networking technology that has emerged in recent years. However, due to the limitation of its protocol stack, the speed of ad hoc networking and dynamic screening is slow, and it cannot adapt to data link transmission in a dynamic environment.

[0004] The above technologies are applied to LED lamps, and they all have the problems of difficult selection of base station laying locations and difficulty in power supply of base station equipment during project implementation, and can only meet the lighting adjustment function within a certain area, because there is no unique positioning service characteristics and cannot be used as a terminal node for extensive Internet of Things applications. The existing multi-lamp synchronous control operation is complicated. It is necessary to record the location information of all lamps and then control them one by one. The control is difficult and error-prone.

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