Data Sheet

ManualsBrandsSeeedStudio ManualsIndoor LocalizationSeeedstudio UWB PK-1000 Indoor Positioning / Localization System

1. Hardware

PK-1000 is a cm-level accurate positioning / distance measuring kit with independent

intellectual property rights. It is featured with a scheduling system based on clock

synchronization. This in-house developed scheduling system, combined with

traditional UWB positioning technology, has enabled PK-1000 with the ability to solve

the biggest problem in usual TOA (time of arrive) based UWB positioning method --

poorly configurable mesh network. This deficiency means that global positioning in a

large complex environment cannot be achieved by usual UWB, while with PK-1000, it

is possible. PK-1000 is suitable for research, as well as for integrating with any third-

party products. Following the specification and manual of PK-1000, you can set up the

kit by yourself, make use of it or further develop it freely.

1.1 Product images

1.2 Hardware components

1.2.1 The tag

Summary of content (11 pages)

PAGE 1
. Hardware PK-1000 is a cm-level accurate positioning / distance measuring kit with independent intellectual property rights. It is featured with a scheduling system based on clock synchronization. This in-house developed scheduling system, combined with traditional UWB positioning technology, has enabled PK-1000 with the ability to solve the biggest problem in usual TOA (time of arrive) based UWB positioning method -poorly configurable mesh network.
PAGE 2
As illustrated inFigure 3,the hardware system of PK-100 tag includes 5parts:  MCU acquires the distance data measured by TAG, calculates the absolute coordinates of TAG, and processes data exchanged with outer processors through interfaces like Serial,CAN, and TCP.  TAG communicates with IR-UWB chip, controls the operative mode of IR-UWB,and communicates with Anchors within range.  TCP Server, Serial and CAN interfaces transmit data and receive order wirelessly.
PAGE 3
As illustrated in Figure 4, the hardware system of PK-100 anchor includes 3 parts:  MCU communicates with IR-UWB chip, controls the operative mode of IR-UWB,and communicates with Tags within range.  Anchor ID can be set with DIP switch. For detailed instruction, please look into PK1000 User Manual.  Anchor is powered by 5v micro USB. 1.3 Definition of interfaces Please look into PK-1000 User Manual. 1.
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2 3993.6 499.2 3 4492.8 499.2 4 3993.6 1331.2 5 6489.6 499.2 6 6489.6 1081.6 By default, PK-1000 kit operates on channel 2, center frequencies is 3.994GHz, data rateis6.8Mbps. The signal power spectral density that PK-10000 transmits is -41Bm/MHz. With a bandwidth of 500MHz, the power of signal of PK-1000 is -14dBm, which is far below that of WIFI and Bluetooth. The average power of both PK-1000 tag and anchor is roughly 0.925w. 1.5 Specification for physical layer 1.5.
PAGE 5
The operating temperature range of PK-1000 is from -40℃ to +85℃, this performance is guaranteed by TCXO (Temperature Controlled Crystal Oscillator). 2. Software 2.1 Software of the microcontroller 2.1.1 Distance measurement 2.1.1.
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(2) 1 tag, Nanchors (3) Mtags, Nanchors
PAGE 7
PK-1000 is based on the in-house developed clock synchronization scheduling system, which is compatible for the aforementioned systems in both hardware and software. But for system 3 (M tags, N anchors), to assure the measuring frequency stays at 10Hz when all the tags are being measured, we advise you to use no more than 10 tags in the same system. There’s no restrains on the number of anchors. Attention: 1. The clock synchronized scheduling system is an important feature of PK-1000.
PAGE 8
PK-1000 positioning system is operational with only 3 anchors. The fourth anchor provides more distance data for the user, and therefore improve the accuracy and robustness of the system. 2.1.2.2 Calculation result You can find the result in the host computer RLKit. For more information please look into PK-1000 User Manual. 2.2 Software of the host computer 2.2.1 Code upgrade Please look into PK-1000 User Manual. 2.2.
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Please look into PK-1000 User Manual for more in formation. 2.3 PK-1000 default parameters 2.3.1 The default parameters of UWB Content Default value Channel Channel 2, Center frequency: 3.994GHz, Bandwidth: 500MHz Data rate 6.8MHz Measuring frequency 10Hz PANID DECA 2.3.2 The default parameters of PK-1000 tag WIFI module Content Default value Operating mode TCP Server SSID BeiLa Password 12345678 IP address 192.168.0.19 Server port 8080 2.3.
PAGE 10
3. PK-1000 performance demonstration 3.1 Error performance of outdoor measurement (0-20m) 3.
PAGE 11
(3) True value 179cm Attention: 1. PK-1000 UWB distance measuring performance differs between indoor and outdoor environments. This is caused by the indoor multi-path effect, the indoor measurement error is slightly bigger than outdoor, and the stability poorer. But this deviation won’t have big impact on the positioning.