Annex no. 5 Functional Description / User Manual Date: 2014-03-07 m. dudde hochfrequenz-technik Page 1 of 1 Rottland 5a D-51429 Bergisch Gladbach/ Germany Vers. no. 1.
Project Documentation | UMRR-0F0002-1F0902-030B00 Radar Sensor Documentation Project Number: ... SMS Project Number: Project Title: General Purpose Radar Sensor Keyword(s): UMRR-0F0002-1F0902-030B00 radar sensor, type 31 antenna Date: November 13, 2014 Document: UMRR-0F0002-1F0902-030B00 General Purpose USA Version: 1 CONFIDENTIAL AND PROPRIETARY The Information contained in this document shall remain the sole exclusive property of s.m.
1 Contents 1 2 3 4 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-0F0002 radar sensor with type 31 antenna 1F0902 in the housing version 030B00. 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.
4 General description 4.1 Sensor description The main task of the UMRR is the detection of any reflectors in the field of view, to measure the distance, the relative speed and the angle to the shortest reflector (and to other reflectors), to detect motion and to track (filter) the results over time.
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 The UMRR transmit frequency is located in the 24 GHz ISM band (24075 MHz to 24175 MHz), the used bandwidth is smaller than 100 MHz. The maximum transmit power is 20.0dBm. Antenna type 31 is used, consisting of one transmit and two receive antennas, both linear polarized. The 2 way 3 dB cut-off angle in az. +-28deg. And in el. +-5deg. The device uses different FMCW transmit signal waveforms for distance and speed measurement. 4.
5 Hardware 5.1 UMRR sensor An example picture of a UMRR (universal medium-range radar) sensor (housing type 030B00) is shown in the figures below. Figure 2: UMRR sensor, housing type 030B00, 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 030B00 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.
5.2 Sensor Dimensions All values given in mm. Figure 4: Sensor Front 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.
Figure 5: Sensor Top, Left and Right Side. 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.
6 Cables and connectors 6.1 Sensor connector The used sensor connector is a 12-pin male (plug) circular connector (water proof IP67, LF10, manufacturer Hirose). A female counterpart (socket), e.g. LF10WBP-12S, has to be used to connect to the sensor. The pin numbering of the socket is shown in Figure 7 the pin description is given in Table 2: Sensor connector pin out Model UMRR-0F0002.
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 A pins of the DSP TMS320F28335 are connected to a CAN transceiver which is connected to the pins CAN_A_L and CAN_A_H. Similarly, the RS485 pins of the DSP are connected to a RS485 transceiver, which is connected to the pins RS485_IN_P, RS485_IN_N, RS485_OUT_P and RS485_OUT_N.
Figure 11: UMRR-0F0002 DSP board schematics, Ethernet 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.
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 Change the Frequency Band For some use cases it may be required to run the sensor in a different frequency range than the default one, to avoid interferences in multi sensor system for example. The sensor provides 7 possible frequency bands (FB6 … FB12) between 24.075 GHz and 24.175 GHz. There are two ways to change the sensors frequency band. One way is to change the sensor ID. With the ID the default frequency band changes as well. This change is non-volatile.
Table 5: ID dependent frequency offset f [GHz] frequency band frequency frequency frequency frequency index sensor index sensor index sensor index sensor ID0 ID1 ID2 ID3 FI4 FI2 FI0 - 24.0560 FB4 24.0685 FB5 FI5 FI3 FI1 - 24.0810 FB6 FI6 FI4 FI2 FI0 24.0935 FB7 FI7 FI5 FI3 FI1 24.1060 FB8 FI8 FI6 FI4 FI2 24.1185 FB9 FI9 FI7 FI5 FI3 24.1310 FB10 FI10 FI8 FI6 FI4 24.1435 FB11 FI11 FI9 FI7 FI5 24.
10 Frequency Approval 10.1 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.
10.2 Declaration of Conformity for CANADA 10.2.1 Declaration of Conformity in English This device complies with Industry 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.
