Annex no. 5 Functional Description / User Manual State: 2010-03-01 m. dudde hochfrequenz-technik Vers. no.: 1.10 Rottland 5a D-51429 Bergisch Gladbach/ Germany Tel.
Project Documentation | UMRR-0A Radar Sensor Documentation Project Number: ... SMS Project SMS Project Number: Number: Project Title: Project Title: General Purpose Radar Sensor General Purpose Radar Sensor Keyword(s): Keyword(s): UMRR-0A radar sensor, type 29 antenna, type 30 antenna, type 34 antenna UMRR-0A radar sensor, type 29 antenna Date: Date: September 20, 2011 September 20, 2011 Document: Document: UMRR-0Axxxx Type29, Type30, Type34 General Purpose.docx UMRR-0Axxxx Type29 General Purpose.
1 Contents 1 2 3 4 5 6 7 8 9 Contents .................................................................................................................... 2 Abbreviations ............................................................................................................. 3 Introduction ............................................................................................................... 4 General description ...............................................................................
2 Abbreviations ADC Analog-to-digital converter CAN Controller area network DAC Digital-to-analog converter DSP Digital signal processing; digital signal processor EEPROM Electrically erasable programmable read-only memory FMCW Frequency modulated continuous wave MMIC Monolithic microwave integrated circuit RAM Random access memory RS485 Physical communication layer standard EIA RS-485 SPI Serial peripheral interface UMRR Universal medium-range radar CONFIDENTIAL AND PROPRIETARY The Info
3 Introduction This document is a short documentation of the general purpose universal medium range radar (UMRR) UMRR-0Axxxx radar sensor with type 29 antenna in the housing version 0506xx. CONFIDENTIAL AND PROPRIETARY The Information contained in this document shall remain the sole exclusive property of s.m.s smart microwave sensors GmbH and shall not be disclosed by the recipient to third parties without prior consent of s.m.s smart microwave sensors GmbH in writing. UMRR-0Axxxx Type29 General Purpose.
4 General description 4.1 Sensor Sensordescription description The main task of the UMRR is the detection of any reflectors in the field of view, to measure the The main task of the UMRR is the detection of any reflectors in the field of view, to measure distance, the relative speed and the angle to the shortest reflector (and to other reflectors), to the distance, the relative speed and the angle the shortest reflector (and to other detect motion and to track (filter) the results overtotime.
The RF transceiver board consists of transmit and receive antennae and the RF circuitry that includes the radar MMIC SC3001.2. The radar MMIC generates the transmit signal and down converts the receive signals into baseband. The analog baseband signals are then routed to the DSP board and digitized by the DSP’s built-in ADC. The digital data are further processed on the DSP.
4.2 Transmit Signal TheUMRR UMRRtransmit transmit frequency is located in the band (24000 to 24250 The frequency is located in the 24 24 GHzGHz ISMISM band (24075 MHzMHz to 24175 MHz),MHz), the used the used bandwidth is smaller thanThe 100 MHz. The maximum transmit power is 20dBm. bandwidth is smaller than 100 MHz. maximum transmit power is 20dBm. Antenna consisting of of oneone transmit andand twotwo receive antennas, bothboth linearlinear polarized.
5 Hardware 5.1 UMRR sensor An example picture of a UMRR (universal medium-range radar) sensor (housing type 0506xx) is shown in the figures below. Figure 2: UMRR sensor, housing type 0506xx, front. CONFIDENTIAL AND PROPRIETARY The Information contained in this document shall remain the sole exclusive property of s.m.s smart microwave sensors GmbH and shall not be disclosed by the recipient to third parties without prior consent of s.m.s smart microwave sensors GmbH in writing.
Figure 3: UMRR sensor housing 0506xx rear CONFIDENTIAL AND PROPRIETARY The Information contained in this document shall remain the sole exclusive property of s.m.s smart microwave sensors GmbH and shall not be disclosed by the recipient to third parties without prior consent of s.m.s smart microwave sensors GmbH in writing. UMRR-0Axxxx Type29 General Purpose.docx Version 1 UMRR-0Axxxx Type29, Type30, Type34 General Purpose.
5.2 Sensor Dimensions All values given in mm. Figure 4: Sensor Front side. Figure 5: Sensor Top, Left and Right Side. CONFIDENTIAL AND PROPRIETARY The Information contained in this document shall remain the sole exclusive property of s.m.s smart microwave sensors GmbH and shall not be disclosed by the recipient to third parties without prior consent of s.m.s smart microwave sensors GmbH in writing. UMRR-0Axxxx Type29 General Purpose.docx Version 1 UMRR-0Axxxx Type29, Type30, Type34 General Purpose.
Figure 6: Sensor Rear Side. CONFIDENTIAL AND PROPRIETARY The Information contained in this document shall remain the sole exclusive property of s.m.s smart microwave sensors GmbH and shall not be disclosed by the recipient to third parties without prior consent of s.m.s smart microwave sensors GmbH in writing. UMRR-0Axxxx Type29 General Purpose.docx Version 1 UMRR-0Axxxx Type29, Type30, Type34 General Purpose.
6 Cables and connectors 6.1 Sensor connector The used sensor connector is an 8-pin male circular connector (water proof IP67, series 712, manufacturer Binder GmbH, Germany). A female counterpart has to be used to connect to the sensor. The pin numbering of the female connector is shown in Figure 7 the pin out of the connector is shown in Table 2.
7 Data interfaces 7.1 CAN data interface This specification gives a detailed description of the CAN data communication used in the UMRR based systems on the sensor CAN. The UMRR is compliant with CAN 2.0B standard. CAN is a very robust full duplex bidirectional interface. 7.
Figure 8: CAN bit timing for UMRR sensor (eCAN module on DSP TMS320F28335) Figure 9: CAN bit timing as defined by the CAN protocol 7.3 RS485 data interface The RS485 interface from the UMRR sensor has a predefined speed of 230400 baud/s. Typical other data rates are between 921.6kBit/s and 56.7kBit/s. The RS485 message payload is identical to the CAN format. The data messages will be sent in several packets of one byte.
Table 3: RS485 message structure Byte\Bit 0 1 2 3 x x x x x x x x 0 1 2 3 4 7 6 5 4 3 2 Start sequence (4 x UINT8) 1 0 0xCA 0xCB 0xCC 0xCD Data payload (n x UINT8) XOR Checksum (UINT8) End sequence (4 x UINT8) 0xEA 0xEB 0xEC 0xED Every data message consists of its own message ID, the number of used data bytes and the data bytes itself. The checksum is calculated on all data except the start sequence and the end sequence. The Checksum is a simple XOR Assignment of all n data bytes.
Table 4: Structure of a RS485 data payload block Byte\Bit 0 1 2 3 4 5 6 7 8 9 10 7 6 5 4 3 2 CAN message ID (UINT16) 1 0 High Low CAN message length (UINT8) CAN data payload (length x UINT8) The sensor receives only one message per cycle. It is important to wait for the end sequence to send an additional command. CONFIDENTIAL AND PROPRIETARY The Information contained in this document shall remain the sole exclusive property of s.m.
7.4 Transceiver schematics In Figure 10 an extract of the DSP board schematic of the UMRR is given. As can be seen in this figure, the CAN pins of the DSP TMS320F28335 are connected to a CAN transceiver which is connected to the pins CAN_L and CAN_H. Similarly, the RS485 pins of the DSP are connected to a RS485 transceiver, which is connected to the pins RS_485_L and RS_485_H.
8 Designated use The UMRR general purpose medium range radar is suitable for any application where the distance to and relative radial speed of large objects has to be measured. Typical applications are: Automotive: measure shortest distance to obstacle. Robotics: measure shortest distance to obstacle. Security: detect motions and measure distance to moving object. Traffic management: detect moving objects, count those, measure speed and measure distance to moving object. Cranes: measure distance to ground.
9 Declaration of Conformity for USA 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.
