LIGO AIR ADAPTER Datasheet

Product Overview

Ligo BLE Adapter is an intelligent communication and integration module designed to enable seamless connectivity between wireless fuel level sensors (BLE) and GPS/telematics devices that do not natively support BLE communication.

Acting as a protocol bridge, Ligo Adapter allows existing GPS systems to integrate wireless fuel sensors without hardware modification or replacement, significantly reducing deployment and upgrading costs while enhancing system flexibility.

In addition to protocol conversion, Ligo Adapter functions as a SUM Data, capable of simultaneously connecting to 10 wireless fuel sensors and aggregating their data for transmission to the GPS device via standard wired interfaces such as RS232, RS485, and Analog/Frequency (AF).

To ensure reliable wireless performance in challenging environments, Ligo Adapter incorporates a BLE receive-path signal amplification mechanism, improving receiver sensitivity and extending the effective communication range of wireless fuel sensors. This feature is particularly beneficial in environments with high attenuation or electromagnetic interference, such as vehicle cabins, metal fuel tanks, and industrial machinery.

Key Features

• Protocol bridge for Non-BLE GPS/Telematics: Enables seamless connectivity between wireless BLE fuel level sensors and GPS/telematics devices that do not natively support BLE.
• Multi-Sensor data hub (up to 10 Sensors): Connecting to up to 10 wireless fuel sensors simultaneously.
• Standard wired output interfaces: Transmits aggregated sensor data to the GPS/telematics device via standard wired interfaces RS232, RS485, AF.
• BLE receive-path signal amplification: Incorporates a BLE receive-path signal amplification mechanism that improves receiver sensitivity and extends the effective communication range of wireless fuel sensors.

Applications

Ligo Adapter is developed to achieve the following objectives:

• Allows GPS and telematics units without BLE capability to communicate with wireless fuel level sensors.
• Support multiple wired communication interfaces. Ensures broad compatibility with a wide range of GPS devices through RS232, RS485, and AF interfaces.
• Aggregate data from multiple sensors (SUM function). Supports simultaneous connection of up to 10 fuel level sensors, consolidating sensor data into a single communication channel to the GPS unit.
• Extend BLE communication range and reliability. Enhances BLE reception through signal amplification, improving data stability and transmission distance in high-loss or noisy environments.

Technical Specifications

No.	Parameters	RS232	RS485	PRO	AF
1	Dimention (without wire), mm	670x800	670x800	670x800	670x800
2	Output interface	Digital	Digital	Analog & Digital	Analog
3	Baud rate, bit/sec	2400–115200	2400–115200	2400–115200	2400–115200
4	Power supply, VDC	7–36 VDC	7–36 VDC	7–36 VDC	7–36 VDC
5	Maximum power consumption	~15mA @13.5V	~15mA @13.5V	~15mA @13.5V	~15mA @13.5V
6	Power supply protection	1000VDC reverse polarity	1000VDC reverse polarity	1000VDC reverse polarity	1000VDC reverse polarity
7	Operating temperature, °C	-40 to 85°C	-40 to 85°C	-40 to 85°C	-40 to 85°C
8	Waterproof standard	IP67	IP67	IP67	IP67
9	Output signal type	Digital	Digital	Digital & Analog	Analog (0-10V)
10	Data output mode	SUM / AVG / Individual	SUM / AVG / Individual	SUM / AVG / Individual	SUM / AVG
11	Bluetooth specs	BLE 5.2	BLE 5.2	BLE 5.2	BLE 5.2
12	Average service life, years (expected)	8 years	8 years	8 years	8 years

Wiring Description

Figure 1. Wiring diagram of Ligo BLE Adapter

Color	Function	Description
RED	VBAT	7 - 36VDC
WHITE	AF	Analog output
BLACK	GND	GND
GREEN	RS485-B	RS485-B
YELLOW	RS485-A	RS485-A
BLACK	GND	GND
BROWN	RS232-Rx	RS232-Rx
BLUE	RS232-Tx	RS232-Tx

Compliance and Certifications

Refer to LIGO BLE ADAPTER Certification & Approvals for current certificate status.

Revision History

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