WIZZILAB UM-1 RTLS and Communication Module User Manual

U M -1
RTLS andCommunication module

Description
The UM-1 Module is a full-function RTLS / wireless modem subsystem in a compact factor, composed of Qorvo DWM1001 hardware, and WizziLab proprietary firmware. The UM-1 module enables customers to quickly get an RTLS system up and running, and also provides additional over-the-air communication capabilities through the UWB, BLE and NFC interfaces. The UWB part of the system is designed to operate on 4.493 GHz (IEEE 802.15.4- 2011, Channel 3) and 6.490 GHz (IEEE 802.15.4- 2011, Channel 5) Nominal Centre Frequencies with a 500 MHz Bandwidth and data rates of 110 kbps and 850 kbps. It also features a BLE modem and a passive NFC-A listening device.

Key Features
Low-latency low-power two-way ranging for RTLS systems with up to 10 cm accuracy. 110 / 850 kbps data rate IEEE 802.15.4-2011. UWB compliant, on channels 3/5. Embedded PCB UWB antenna. DASH7 over UWB communication @ 110 / 850 kbps on channels 3/5. ETSI, FCC, ISED Certified FCC ID: 2ARZVUM-1, IC:27701-UM1 BLE & NFC-A listening device. Tap-to-connect protocol and secured BLE connectivity Motion sensor: 3-axis accelerometer Bluetooth® connectivity & chip antenna Tap-to-connect Current consumption optimized for low power sleep mode: <5pA Supply voltage: 2.8 V to 3.6 V Size: 19.1 mm x 26.2 mm x 2.6 mm Operating temperature: -40 °C to 85 °C
Applications Indoor / outdoor high precision RTLS BLE sniffing and beaconing. BLE / NFC connectivity D7A over UWB communication
WizziLab product line at www.wizzilab.com/products

Overview

The UM-1 Module is a full-function RTLS / wireless modem subsystem in a compact factor, composed of Qorvo DW1000 hardware, and WizziLab proprietary firmware.
1.1 UWB Transceiver DW1000
The UM-1 module has a DW1000 UWB transceiver mounted on the PCB. The DW1000 uses a 38.4 MHz reference crystal. The crystal has been trimmed in production to reduce the initial frequency error to approximately 3 ppm, using the DW1000 IC’s internal on-chip crystal trimming circuit. Always-On (AON) memory can be used to retain DW1000 configuration data during the lowest power operational states when the on-chip voltage regulators are disabled. This data is uploaded and downloaded automatically. Use of DW1000 AON memory is configurable. The on-chip voltage and temperature monitors allow the host to read the voltage on the VDDAON pin and the internal die temperature information from the DW1000. See the DW1000 Datasheet [2] for more detailed information on device functionality, electrical specifications and typical performance.
1.2 Bluetooth® Microprocessor Nordic nRF52832
The nRF52832 is an ultra-low-power 2.4 GHz wireless system on chip (SoC) integrating the nRF52 Series 2.4 GHz transceiver and an ARM Cortex-M4 CPU with 512kB flash memory and 64kB RAM. See the nRF52832 datasheet [1] for more detailed information on device functionality, electrical specifications and typical performance.
1.3 Power Supply and Power Management
The power management circuit consists of a switch-mode regulator. It is a buck converter or step-down converter. The input voltage to the UM-1 can be in the range of 2.8V to 3.6V. Outputs from the converter provide 1.8V which is required by the DW1000 [2] transceiver.
1.4 Three Axis Motion Detector
The LIS2DH12 is an ultra-low-power high-performance three-axis linear accelerometer with digital 12C/SPI serial interface standard output. The LIS2DH12 has user-selectable full scales of ±2g/±4g/±8g/±16g and is capable of measuring accelerations with output data rates from 1 Hz to 5.3 kHz. The self- test capability allows the user to check the functionality of the sensor in the final application. The device may be configured to generate interrupt signals by detecting two independent inertial wake-up/free-fall events as well as by the position of the device itself. The LIS2DH12 is guaranteed to operate over an extended temperature range from -40 °C to +85 °C.
See the LIS2DH12TR Datasheet [4] for more detailed information on device functionality, electrical specifications and typical performance.
1.5 Software on board
The UM-1 module comes loaded with embedded firmware which provides two-way ranging (TWR), D7A over UWB communication and BLE (tap-to-connect, beaconing and sniffing in Eddystone and IBeacon format) functions. The module can be configured and controlled via its API, accessible through its serial (UART or SPI) port. The API is based on the open ALP specification, elaborated by the D7A Alliance [6]. For further information, contact WizziLab. The same firmware is also available as a stand alone, nonmodifiable library, which provides a function API. This allows executing the host firmware directly on the MCU of the UM-1.
2 Pin Connections

2.1 Pin Descriptions
Tabil 1 .pin Description

SWDCLK
SWD_DIO| 3| DIO| Serial wire debug I/O for nRF52 debug and programming| SWDIO
GPI0_10| 4| DIO| General-purpose I/O pin.| P0.10
GPIO_9| 5| DIO| General-purpose I/O pin.| P0.09
GPIO_12| 6| DIO| General-purpose I/O pin.| P0.12
GPIO_14| 7| DIO| General-purpose I/O pin.| P0.14
GPIO_22| 8| DIO| General-purpose I/O pin.| P0.22
GPI0_31| 9| DIO| General-purpose I/O pin. ADC function of nRF52| P0.31
GPI0_30| 10| DIO| General-purpose I/O pin. ADC function of nRF52| P0.30
GPI0_27| 13| DIO| General-purpose I/O pin.| P0.27

Pin Connections

11
24
34| G| Common ground|

Table 2. I2C slave devices address I2C

3 Electrical specification The following tables give detailed specifications for the UM-1 module. T amb = 25 °C for all specifications given.
3.1 Nominal operating conditions Table 3. Recommended operating conditions

Wireless Specification

4.1 UWB
Table 5. UWB transceiver operating conditions

4.2 BLE
Table 6. BLE transceiver operating conditions

 Functionality

5.1 General Purpose
The UM-1 Module is a full-function RTLS / wireless modem subsystem in a compact factor. composed of Qom DW1000 hardware, and WizziLab proprietary firmware. The UM-1 module enables customers to quickly get an RTLS system up and running, and also provides additional over-the-air communication capabilities through the UWB, BLE and NFC interfaces. The UWB part of the system is designed to operate on 4.493 GHz (IEEE 802.15.4- 2011, Channel 3) and 6.490 GHz (IEEE 802.15.4- 2011, Channel 5) Nominal Centre Frequencies with a 500 MHz Bandwidth and data rates of 110 kbps and 850 kbps. It also features a BLE modem and a passive NFC-A listening device.
5.2 Two-way ranging
The UM-1 provides a two-way ranging function (TWR), as described in the DW1000 Datasheet [2]. The ranging is performed through the exchanges of 4 timestamped packets allowing to compute a time of flight estimation. The initiating device and the target device are awoken through an out-of-band event, so the TWR does not involve any polling, repetition, or any other transmission activity aimed to maintain a link between the devices. The TWR routine does not exceed 100 ms, transmission periods do not exceed 10 ms. 5.3 DASH7 over UWB
The UM-1 embeds a D7A protocol stack for the purpose of exchanging data between nodes. The stack is an implementation of the open specification elaborated by the D7A Alliance [7], which is by construction connects (it is based on an asynchronous MAC). The transmission of data is initiated by the application. A DASH7 transaction is a single request followed by a single per- device response. The DASH7 protocol does not involve any polling or any other continuous transmission activity in aims to maintain a link between the devices. The DASH7 routine does not exceed 100 ms. transmission periods do not exceed 10 ms.
5.4 BLE beaconing and sniffing
The UM-1 embeds a BLE protocol stack, based on the Nordic Semiconductors SoftDevice library. The device supports tap-to-connect, beaconing and sniffing functions, in Eddystone and ! beacon format.
5.5 Tap-to-connect
A device. supporting the tap-to-connect protocol. can establish a BLE connection with the tag. The format. A device. supporting the tap-to-connect protocol. can establish BLE connection with the tag. The procedure is initiated by an NFC access event that triggers the immediate exit from monitoring mode and disabling of all OASH7 (sub-GHz) and UWB interfaces. The tag start blinking in blue. The tap-to connect is meant to be used as an alternative for configuration and report dumping.

How to use

6.1 Serial API
The device can be controlled by a separate host over the UART or SPI serial port. The API is based on the open ALP specification, elaborated by the D7A Alliance [6]. Please contact WizziLab for a detailed description.
6.2 Function API The same firmware is also available as a stand-alone, nonmodifiable library, which provides a function API. This allows executing the host firmware directly on the MCU of the UM-1. Please contact WizziLab for a detailed description.

FCC Caution

Any Changes or modifications not expressly approved by the party responsible for compliance could void the users authority to operate the equipment.
7.1 Compliance
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference. and (2) this device must accept any interference received, including interference that may cause undesired operation.
IMPORTANT NOTE : This equipment has been tested and found to comply with the limits for a Class B digital device. pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates. uses and can radiate radio frequency energy and. if not installed and used in accordance with the instructions. may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception. which can be determined by turning the equipment off and on. the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help.

7.2 Radiation Exposure
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. This device may not be employed for the operation on board an aircraft. a ship or a satellite is prohibited.
7.3 UWB Operation Restriction
The module UM-1 meets general requirements specified in FCC§15.519 (a)
Host devices intended for indoor use must comply with the requirements of §15.517 (a). The host’s user manual shall bear a statement on the device or in the instruction manual stating. “This equipment may only be operated indoors. Operation outdoors violates 47 U.S.C. 301 and could subject the operator to serious legal penalties.

• Host devices with any potential for outdoor usage shall comply with the handheld limitations of § 15.519 (a).
• For both an indoor or primarily handheld host, the module integration manual shall state that under § 15.521 (a) UWB devices may not be employed to operate toys. Operation on board an aircraft, a ship, or a satellite is prohibited
  This device may not be employed for the operation on board an aircraft, a ship or a satellite is prohibited. To avoid any installation mistake or any harm to user since lack of technical knowledge, it has to be installed by a professional person.

 ISEDC Warning

This device complies with Innovation. Science, and Economic Development Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any interference, including interference that may cause undesired operation of the device.
Manual v01
2.2 List of applicable FCC rules
CFR 47 FCC PART 15 SUBPART C&F has been investigated. It is applicable to the modular. 2.3 Specific operational use conditions This module is stand-alone modular. If the end product will involve the Multiple simultaneously transmitting condition or different operational conditions for a stand-alone modular transmitter in a host, the host manufacturer have to consult with the module manufacturer for the installation method in the end system.
2.4 Limited module procedures
Not applicable
2.5 Trace Antenna designs
We supply the internal PCB antenna with UWB and Ceramic Antenna with BLE. When designing the PCB onto which the DW1000 will be soldered, the proximity of the DW1000 onboard antenna to metal and other non-RF transparent materials needs to be considered carefully. Two suggested placement schemes are shown below. For best RF performance, ground copper should be flooded in all areas of the application board, except in the areas marked “Keep-Out Area”, where there should be no metal on either side, above or below (e.g. do not place the battery under the antenna). The two placement schemes in Figure 4 show an application board with no metallic material in the keep-out area. The diagram on the right is an application board with the antenna projecting off of the board so that the keep-out area is in free space. The diagram on the left shows an application board that does not have the module in free space but has the PCB copper removed on either side (and behind) the module antenna. (Note: the rectangular area above the shield on the module is the antenna area) It is also important to note that the ground plane on the application board affects the DW1000 antenna radiation pattern. There must be a minimum spacing of 10 mm (d) without metal on either side of the module antenna.

2.6 RF exposure considerations
To maintain compliance with FCC’s RF exposure guidelines.
2.7 Antennas
This radio transmitter FCC ID: 2ARZVUM-1 has been approved by Federal Communications Commission to operate with the antenna types listed below, with the maximum permissible gain indicated. Antenna types not included in this list that have a gain greater than the maximum gain indicated for any type listed are strictly prohibited for use with this device.

Antenna Description.’↵| Antenna Type.’↵| Frequency Range
(MHz).↵| Impedance.,
( Ω).’↵| Maximum antenna
gain(dBi)↵
---|---|---|---|---
Bluetooth/DIATB Antenna.,↵| /PCB Antenna| Ceramic Antenna| 50.,↵| -4.3/0.8

2.8 Label and compliance information
The final end product must be labeled in a visible area with the following” Contains FCC ID: 2ARZVUM-1″
2.9 Information on test modes and additional testing requirements Host manufacturer is strongly recommended to confirm compliance with FCC requirements for the transmitter when the module is installed in the host.
2.10 Additional testing, Part 15 Subpart B disclaimer Host manufacturer is responsible for compliance of the host system with the module installed with all other applicable requirements for the system such as Part 15 B
The manufacturers, or their authorized sales agents, must inform purchasers and users of their systems of the requirement to undertake detailed coordination of operational areas with the FCC prior to the equipment being operated. Users of authorized, coordinated UWB systems may transfer them to other qualified users and to different locations upon coordination of change of ownership or location to the FCC and coordination with existing authorized operations.

 Revision history

Table 7. Document revision history

References

[1] nRF52832 Product Specification v1.3 www.nordicsemi.com
[2] Decawave DW1000 Datasheetwww.decawave.com
[3] Decawave DW1000 User Manualwww.decawave.com
[4] STMicroelectronics LIS2DH12TRwww.st.com
[5] ALP specification v1.2www.dash7-alliance.orq
[6] D7A specification v1.2www.dash7-alliance.orq

WIZZILAB Technical datasheet

Documents / Resources

| WIZZILAB UM-1 RTLS and Communication Module [pdf] User Manual
UM-1, UM1, 2ARZVUM-1, 2ARZVUM1, UM-1 RTLS and Communication Module, UM-1, RTLS and Communication Module
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