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AoA Positioning Locator

Table of Contents

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Model Wi-Fi

1. Introduction

1.1 Purpose& Description

DSGW-200 is an indoor Locator for Bluetooth AoA Positioning. It can reach a positioning accuracy of 0.3-1 meters in the 2D plane. At the same time, it has the characteristics of low power consumption, low delay, low radiation, and strong anti-interference. A signal locator can achieve 2D positioning.

DSGW-200 is suitable for personnel tracking and real-time positioning of assets in smart healthcare, smart factories, smart factories, smart offices, and smart education. 

DSGW-200 also has an IoT gateway function, it supports the Zigbee, Z-wave, and BLE wireless protocol.

1.2 Product Feature Summary

  • Support 5V USB type-c power supply
  • Support IEEE802.3-2012 Type 1, the IEEE802.3-2012 Type 1 requires a power supply device (PSE) to provide 44 to 57V, and the power of the powered device (PD) must not exceed 12.95 W and the current does not exceed 350 mA
  • Support IEEE802.11ac, IEEE802.11a,IEEE802.11n,IEEE802.11g,IEEE 802.11b Protocol
  • Support 4G LTE cat M1
  • Support Bluetooth 5.2
  • Support zigbee3.0
  • Support Z-wave
  • Support LoRa
  • One WAN/LAN variable network port
  • Support USB2.0
  • Backup Li battery

1.3 Hardware Block Diagram

image 89

2. Mechanical Requirement

2.1 Drawings

image 68
image 69

2.2 Product Size

image 70

3. Specifications

3.1 Technical Specification

Category Specifications
Power Supply USB type-C 5V/2A
Reset button The reset button is hole button, After pressing the reset button for more than 5 seconds, the Locator will be restored to the factory settings.
Switch On/Off power
Network Interface The network interface supports CAT-5/CAT-5E to transmit data and POE Power Supply (voltage range is 44~ 57V). It is WAN/LAN variable.
PCle For LoRa Module
SIM card Micro SIM card
Indicator LEDs 1).Power &battery LED
3).Wi-Fi LED
4).LTE indicator
Antenna array direction
4*4 Antenna Array
Li battery 6000mAH (It can last 4 hours without DC power)
Installation method Ceiling
RTC Real Time Clock operated from on board battery
Operating Temperature -10℃~60℃
Storage Temperature -40℃~85℃
Operating humidity 10%~90%
Cooling Heat dissipation silicone/aluminum
IP rating IP53
positioning accuracy 0.3-1 meter
Detect range 360° array antenna, Angle of Arrival measurement in the 2.4GHz band

3.2 Performance Requirement

Wi-Fi Performance ●IEEE wireless LAN standard:
IEEE802.11ac; IEEE802.11a; IEEE802.11n; IEEE802.11g; IEEE 802.11b
●Data Rate:
IEEE 802.11b Standard Mode:1,2,5.5,11 Mbps
IEEE 802.11g Standard Mode:6,9,12,18,24,
36,48,54 Mbps
IEEE 802.11n: MCS0~MCS7 @ HT20/ 2.4GHz band
MCS0~MCS7 @ HT40/ 2.4GHz band
MCS0~MCS9 @ HT40/ 5GHz band
IEEE 802.11ac: MCS0~MCS9 @ VHT80/ 5GHz band
VHT80 MCS9 : [email protected]% PER(MCS9) /5GHz band
HT40 MCS9 : [email protected]% PER(MCS9) /5GHz band
HT40 MCS7 : [email protected]% PER(MCS7) /2.4GHz band
HT20 MCS7 : [email protected]% PER(MCS7) /2.4GHz band
●Transmit Power:
IEEE 802.11ac: 13dBm @HT80 MCS9 /5GHz band
IEEE 802.11ac: 16dBm @HT80 MCS0 /5GHz band
IEEE 802.11n: 14dBm @HT20/40 MCS7 /5GHz band
IEEE 802.11n: 16dBm @HT20/40 MCS0 /5GHz band
IEEE 802.11n: 16dBm @HT20/40 MCS7 /2.4GHz band
IEEE 802.11g: 16dBm @54MHz
IEEE 802.11b: 18dBm @11MHz
●Wireless Security: WPA/WPA2, WEP, TKIP, and AES
●Working mode : Bridge、Gateway、AP Client
●Range: 50 meters minimum, open field
●Transmit Power:17dBm
●Highest Transmission Rate: 300Mbps
●Frequency offset: +/- 50KHZ
●Frequency Range (MHz): 2412.0~2483.5
●Low Frequency (MHz):2400
●High Frequency (MHz):2483.5
●E.i.r.p (Equivalent Isotopically Radiated power) (mW)<100mW
●Bandwidth (MHz):20MHz / 40MHz
Bluetooth-Performance ●TX Power: 19.5dBm
●Range: 150 meters minimum, open filed
●Receiving Sensibility: [email protected]%BER
●Frequency offset: +/-20KHZ
●Frequency Range (MHz):2401.0 ~ 2483.5
●Low Frequency (MHz):2400
●High Frequency (MHz):2483.5
●E.i.r.p (Equivalent Isotopically Radiated power) (mW)<10mW
●Bandwidth (MHz):2MHz
●Modulation: GFSK
Zigbee Performance ●TX Power: 17.5dBm
●Range: 100 meters minimum, open filed
●Receiving Sensibility:-94dBm
●Frequency offset: +/-20KHZ
●Frequency Range (MHz):2401.0 ~ 2483.5
●Low Frequency (MHz):2400
●High Frequency (MHz):2483.5
●E.i.r.p (Equivalent Isotopically Radiated power) (mW)<100mW
●Bandwidth (MHz):5MHz
●Modulation: OQPSK
Z-Wave Performance ●TX power up to13dBm (20mW)
●RX sensitivity: @100kbps-97.5dBm
●Range: 100 meters minimum, open filed
●Default Frequency: 916MHz( Different country with different
LoRaWAN Performance ●Frequency band support RU864, IN865, EU868, US915, AU915, KR920, AS923
●TX power up to 27 dBm, RX sensitivity down to [email protected] 12, BW125KHz
LTE Cat M1 ●Operation Frequency Band: 850/ 900/ 1800/ 1900 MHZ
●Global:LTE:FDD: B1/ B2/ B3/ B4/ B5/ B8/
B12/ B13/ B18/ B19/ B20/ B26/ B28
●North America: LTE TDD: B2/ B4/ B12/ B13
●LTE TDD:B39(for cat.M1 only)
WAN/LAN 10/100M bps

4. QA Requirements

4.1 Quality and Testing Information

Information Description Standard(Yes) custom(No)
ESD Testing Yes
RF Antenna Analysis Yes
Environmental Testing Yes
Reliability Testing Yes
Certification FCC, CE, Bluetooth(BQB), PTCRB, RoHs

5. Application

The gateway has an array antenna, the beacon sends Bluetooth data, and the gateway can receive or send Bluetooth signals when switching between different antennas.

image 73
Antenna array design
image 74

Angle of arrival operation

Measure and detect the phase difference of the Bluetooth signal between different receiving antennas, and then calculate the angle of arrival of the signal based on this information and the known distance between the different antennas.

image 75

Derive AoA from the phase difference of different antenna signals

AoA technology only provides relative azimuth and/or elevation angle data between the sending and receiving devices, and other information is needed to calculate the absolute X, Y, and Z coordinates of the Bluetooth asset tag. The figure shows the mechanism to achieve this calculation. In this example, the receiver coordinates and direction are known, and AoA is used to derive azimuth and elevation data from the Bluetooth asset tag.

image 76

Determine the X, Y, and Z coordinates of the Bluetooth asset tag from the known location of the Bluetooth receiver and the azimuth and elevation information generated by AoA

There are other ways to calculate the X, Y, and Z coordinates of the tracked device, such as using multiple receivers to detect the signal sent by the asset tag and then using triangulation or trilateral measurement to calculate the asset location.

System structure

image 91

6. I/Q data

Elevation, RSSI, Azimuth, Distance

image 77

7. Application scenarios

  • Real-time tracking of the elderly and children
  • Product tracking
  • Tool management
  • Indoor navigation
  • Asset positioning

Still have questions?

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