Kistler CMSTRA Owner's manual

Instruction

Manual

Microstar II

Non-Contact

Microwave Sensors

Type CMSTRA

CMSTRA_002-573e-06.17

Foreword

CMSTRA_002-573e-06.17 Page 1

Foreword

Thank you for choosing a Kistler quality product

characterized by technical innovation, precision and long

life.

Information in this document is subject to change without

notice. Kistler reserves the right to change or improve its

products and make changes in the content without

obligation to notify any person or organization of such

changes or improvements.

expressly provided herein, no part of this manual may be

reproduced for any purpose without the express prior

written consent of Kistler Group.

Kistler Group

Eulachstrasse 22

8408 Winterthur

Switzerland

Tel. +41 52 224 11 11

Fax +41 52 224 14 14

[email protected]

Kistler Instrumente GmbH

Divison Automotive Research & Test

Charlotte-Bamberg-Str. 12

35578 Wetzlar

Germany

Tel. +49 6441 9282 0

Fax +49 6441 9282 17

[email protected]

www.kistler.com

Non-Contact Microwave Sensors Type CMSTRA

Page 2 CMSTRA_002-573e-06.17

Content

1.Introduction ................................................................................................................................... 4

2.Important Notes ............................................................................................................................. 5

2.1For your Safety ..................................................................................................................... 5

2.2Disposal Instructions for Electrical and Electronic Equipment ................................................ 6

2.3Software Upgrades and Updates .......................................................................................... 6

3.Product Overview .......................................................................................................................... 7

3.1General Description .............................................................................................................. 7

3.2Features ............................................................................................................................... 8

3.3Application ........................................................................................................................... 8

3.4Accessories ........................................................................................................................... 8

4.Technical Data ............................................................................................................................... 9

4.1Specifications ....................................................................................................................... 9

4.2Pin Assignments ................................................................................................................. 11

4.3Default Settings for Analog and Digital Outputs ................................................................ 14

4.3.1Analog Output Default Settings ............................................................................ 14

4.3.2Digital Output Default Settings ............................................................................. 14

4.4Internal Signal Filtering ....................................................................................................... 15

4.4.1Moving Average Filter ........................................................................................... 15

4.4.2FIR Filter ................................................................................................................ 16

4.5Status Byte via CAN Bus ..................................................................................................... 16

5.Set-up and Connection ................................................................................................................ 17

5.1Mounting Options ............................................................................................................. 17

5.2Sensor Mounting Jig ........................................................................................................... 18

5.3Mounting Devices .............................................................................................................. 18

5.4Connecting the Sensor ....................................................................................................... 19

6.Sensor-specific Software Description ........................................................................................... 20

6.1Project Window Settings Microstar II Sensor ...................................................................... 20

6.1.1Measurement Display ............................................................................................ 20

6.1.2Sensor Configuration ............................................................................................. 21

6.1.3Calibration Settings ............................................................................................... 22

6.1.4Digital Channels .................................................................................................... 23

6.1.5Analog Channels ................................................................................................... 25

6.1.6Filter ...................................................................................................................... 26

6.1.7CAN-Bus ............................................................................................................... 27

6.2Sensor Calibration .............................................................................................................. 29



Content

CMSTRA_002-573e-06.17 Page 3

6.3CAN Protocol ...................................................................................................................... 35

6.3.1Definition of the Frames ......................................................................................... 37

6.3.1.1Definition for Intel Format: .................................................................... 37

6.3.1.2Definitions for Motorola Format: ........................................................... 38

6.3.1.3Table 1: Status byte 1 ............................................................................ 39

6.3.1.4Table 2: Status byte 2 ............................................................................ 39

6.3.1.5Table 3: Filter settings ............................................................................ 40

6.3.1.6Trigger Frame ........................................................................................ 40

6.4Generating CAN Database files (CanDB) ............................................................................. 41

6.5Firmware Update ................................................................................................................ 42

7.Troubleshooting ........................................................................................................................... 45

7.1Cables and Power Supply .................................................................................................... 45

7.2Status LEDs on Sensor Electronics ....................................................................................... 45

7.3Mounting ............................................................................................................................ 45

7.4Software ............................................................................................................................. 46

7.5EMC interference ................................................................................................................ 46

7.6Conclusion .......................................................................................................................... 46

8.Appendix ...................................................................................................................................... 47

Total pages: 47

Non-Contact Microwave Sensors Type CMSTRA

Page 4 CMSTRA_002-573e-06.17

1. Introduction

Please take the time to thoroughly read this instruction

manual. It will help you with the installation, maintenance,

and use of this product.

To the extent permitted by law Kistler does not accept any

liability if this instruction manual is not followed or

products other than those listed under Accessories are

used.

Kistler offers a wide range of products for use in measuring

technology:

 Piezoelectric sensors for measuring force, torque, strain,

pressure, acceleration, shock, vibration and acoustic-

emission

 Strain gage sensor systems for measuring force and

torque

 Piezoresistive pressure sensors and transmitters

 Signal conditioners, indicators and calibrators

 Electronic control and monitoring systems as well as

software for specific measurement applications

 Data transmission modules (telemetry)

Kistler also develops and produces measuring solutions for

the application fields engines, vehicles, manufacturing,

plastics and biomechanics sectors.

Our product and application brochures will provide you

with an overview of our product range. Detailed data

sheets are available for almost all products.

If you need additional help beyond what can be found

either on-line or in this manual, please contact Kistler's

extensive support organization.

Important Notes

CMSTRA_002-573e-06.17 Page 5

2. Important Notes

2.1 For your Safety

Please read carefully before operating the equipment.

Kistler is not responsible for damage that may occur when

this system is used in any way other than that for which it

is intended.

To assure safe and proper operation, all supplied

equipment, components and/or accessories must be

carefully transported and stored, as well as professionally

installed and operated. Careful maintenance and usage in

full accordance with operating instructions is imperative.

The equipment should be installed and operated only by

qualified persons who are familiar with devices of this type.

Local regulations may not permit the operation of motor

vehicles on public highways while the equipment is

mounted on the exterior of the vehicle.

Avoid direct radiant exposure to the body/skin when

operating the sensor (microwave radiation: 24,125 GHz

at 5 mW).

Do not use defective or damaged equipment,

components and/or accessories.

Do not modify or change the equipment or its

accessories in any way.

Equipment must be mounted firmly and securely.

Improper use or mounting of the equipment may affect

the safety of the vehicle and/or occupants. The

equipment must not be mounted and/or operated in

any way that may compromise vehicle or and/or

occupant safety.

Do not mount equipment, components and/or acces-

sories near heat sources (e.g. exhaust).

The sensor and/or sensor components may be

damaged if power is applied for extended periods,

especially in hot environmental condition.

Non-Contact Microwave Sensors Type CMSTRA

Page 6 CMSTRA_002-573e-06.17

Use only original equipment, components and/or

accessories included in the scope of delivery.

Always note correct pin assignments and operating

voltages when connecting equipment, otherwise it may

be damaged if not properly connected and/or ope-

rated.

We recommend to use only the cables included in the

scope of delivery. If you think it is necessary to use own

cables, please take special care of the correct pin

assignment.

Kistler assumes no liability for damages caused due to

the use of cables other than delivered by Kistler.

Disconnect power from the sensor if the vehicle is

stationary or extended periods.

For additional information, please call our Hotline:

+49 6441 9282 82 or mail to [email protected].

2.2 Disposal Instructions for Electrical and Electronic Equipment

Do not discard old electronic instruments in municipal

trash. For disposal at end of life, please return this

product to an authorized local electronic waste disposal

service or contact the nearest Kistler Instrument sales

office for return instructions.

2.3 Software Upgrades and Updates

Kistler may from time to time supply upgrades or updates

for embedded software. Such upgrades or updates must

always be installed.

Kistler declines any liability whatsoever for any direct or

consequential damage caused by products running on

embedded software which has not been upgraded or

updated with the latest software supplied.

Product Overview

CMSTRA_002-573e-06.17 Page 7

3. Product Overview

3.1 General Description

The measurement principle of the Microstar II sensor is

based on the Radar-Doppler-Effect. The sensor consists of

a two-beam planar antenna and the new CDS electronics

unit with CAN bus.

The very large working distance of 300 ... 1 200 mm

makes it ideally suited for applications with utility and off-

road vehicles and to accurately measure longitudinal speed

under extreme conditions, e.g. in woods or mountains,

where GPS or optical sensors are not capable of good

measurements.

Within the product range, sensors of the Microstar type are

the most cost-efficient solution for measuring longitudinal

dynamics.

Microstar II sensors measure the relative movement be-

tween sensor and test surface using a planar antenna,

which projects two radar beams at 45° angles. Upon

striking the test surface, the beams are reflected back to

the sensor antenna. The resulting double frequency (equal

to the difference of sent and received frequencies) is

directly speed-proportional. The gained signal is converted

to the desired dimension via high-performance signal

processing and then sent to the corresponding outputs.

Additional connections, such as an interface for flow-

measurement systems (for consumption tests), or trigger

inputs for light barriers or brake switches, provide

exceptional testing power and flexibility in a highly

compact package.

When used with the delivered software, the Microstar II

sensor functions as a complete data acquisition and

evaluation system. The software enables test parameters

and definitions to be permanently saved via software,

along with online displays and evaluations, e.g. charts and

plots. All measured signals can be saved and evaluated off-

line.

Non-Contact Microwave Sensors Type CMSTRA

Page 8 CMSTRA_002-573e-06.17

3.2 Features

 Working range of 300 ... 1 200 mm, speed range

0,5 ... 400 km/h

 Adjustable filter time (unfiltered, moving average

8 ... 512 ms, FIR-Filter 2 ... 100 Hz)

 Compensation of mounting angle errors (pitch angle)

by two-beam planar antenna

 Direct connection to PC or various evaluation systems

 250 Hz measurement frequency

 Signal outputs: Analog, digital, CAN bus, USB or

RS-232C

 Negligible service and maintenance requirements

3.3 Application

For non-contact distance and speed measurement, e.g.:

 Driving performance measurements

 Determination of longitudinal parameters

 Fuel consumption measurements

 Off-road measurements

 Monitoring the actual speed of off-road vehicles, e.g.

Jeeps, Quads, military vehicles, agricultural vehicles, etc.

3.4 Accessories

Included Accessories Type/Art. No.

 Sensor cable, l = 5 m KCD17390

 Connection cable CAN, l = 2 m KCD13946

 Connection cable RS-232C, l = 2 m KCD13425

 Connection cable USB, l = 2 m KCD13947

 Distribution cable, D-Sub, KCD10532

2 x BNC, l = 1 m

 Transport case, complete KCD17415

 Mini folding rule KCD14643

 Multimedia-CD incl. software & manuals KCD11343

 Sensor calibration KCD11427

 Screw set for Microstar II KCD17416

 Hexagon wrench, 6 kt, 3 mm KCD11285

Optional Accessories Type/Art. No.

 Suction holder Microstar KCD17418

 Magnet holder Microstar KCD17417

Technical Data

CMSTRA_002-573e-06.17 Page 9

4. Technical Data

4.1 Specifications

Performance Specifications

S

p

eed range km/h 0,5 … 400

Distance resolution mm 9,5

Measurement accuracy

1)

%FSO <±0,5

Measurement fre

q

uency Hz 250

Working range mm 300 … 1 200

Signal Outputs

Digital out

p

ut 1 – V

l

Pulses/m 1 … 1 000/TTL

Analog out

p

ut 1 – V

l

V 0 … 10

Signal Inputs

Trigger in

p

ut calibration yes

Analog in

p

ut 1+2 V –10 … 10

Counter in

p

u

t

kHz 0 … 100

Interfaces

CAN (Motorola/Intel) 2.0B

USB (Full S

p

eed) 2.0

RS-232C yes

1) determined on test surface with distance >200 m

Non-Contact Microwave Sensors Type CMSTRA

Page 10 CMSTRA_002-573e-06.17

Specifications (Continuation)

System Specifications

Power su

pp

ly V 10 … 28

Power consum

p

tion at 12 V W 10

Tem

p

erature range

Operation (ambient temperature)

Storage

Relative humidity (non-condensing)

°C

%

–25 … 50

–40 … 85

5 … 80

Protection standard (cable mounted)

Sensor head

Electronics

IP65

IP30

Dimensions (LxWxH)

Sensor head

Electronics

mm

166x44x108

180x125x95

Weigh

t

Sensor head

Electronics

grams

550

1 100

Shock g

ms

50 half-sine

6

Vibration g

Hz

10

10 … 150

Antenna Specifications

Transmission fre

q

uency GHz 24,125 ±0,05

Transmission

p

owe

r

dBm <+25

Source

p

owe

r

mW 5

Radiation angle

Longitudinal direction

Transversal direction

°

2 x 45 ±10

90 ±7,5

Technical Data

CMSTRA_002-573e-06.17 Page 11

4.2 Pin Assignments

Fig. 1: Connector view front plate

CAN, 3 pin Binder, male

1

3

4

Si

g

nal

CAN high

CAN low

DGND

USB, 4 pin Binder, female

1

2

3

4

Si

g

nal

USB detection

D–

D+

DGND

RS-232C, 4 pin Binder, male

1

2

3

4

Si

g

nal

TX (sensor  PC)

RX (PC  sensor)

DGND

4

1 3

2

1 3

4

Non-Contact Microwave Sensors Type CMSTRA

Page 12 CMSTRA_002-573e-06.17

Sensor, 19 pin MIL, female

A

B

C

D

E

F

G

H

J

K

L

M

N

P

R

S

T

U

V

Si

g

nal

Do not connect

A1

+8 V

Do not connect

Shield

Do not connect

AGND

Do not connect

–8 V

Sensor, 6 pin MIL, male

A

B

C

D

E

F

Si

g

nal

+UB (10 … 28 V)

GND

IN, 9 pin D-Sub, male

1

2

3

4

5

6

7

8

9

Si

g

nal

n.c.

n.c

Counter IN (TTL Input)

+UB out, max. 300 mA

GND_Ext

+UB with internal pull-

up resistor (10 kΩ)

n.c.

Light barrier input

(NPN)/brake switch

GND_Ext

Technical Data

CMSTRA_002-573e-06.17 Page 13

When used in combination with a light barrier and/or a

brake switch of a third-party supplier, the internal pull-

up (pin 6) may be applied.

OUT, 9 pin D-Sub, male

1

2

3

4

5

6

7

8

9

Si

g

nal

Analog 1

n.c.

AGND

n.c.

Digital 1

n.c.

DGND

ANA IN1/IN2, 6 pin Lemo, female

1

2

3

4

5

6

Si

g

nal

+5 V

+12 V

–Ana_In

n.c.

+Ana_In

AGND

Non-Contact Microwave Sensors Type CMSTRA

Page 14 CMSTRA_002-573e-06.17

4.3 Default Settings for Analog and Digital Outputs

4.3.1 Analog Output Default Settings

Analog 1 25 mV

km/h longitudinal speed VL

The above settings produce the following values:

50 km/h = 1,25 V

100 km/h = 2,50 V

200 km/h = 5,00 V

400 km/h = 10,00 V

All signals can be used as inputs to all common data

acquisition systems. Should any problems arise, please

contact Kistler.

Use CeCalWin Pro Software to change the settings.

4.3.2 Digital Output Default Settings

Digital 1 400 pulses

m longitudinal distance*

* Output as pulses

Use CeCalWin Pro Software to change the settings.

Technical Data

CMSTRA_002-573e-06.17 Page 15

4.4 Internal Signal Filtering

Signals may be smoothed by using a signal filter that can

be set in CeCalWin Pro Software. You can choose between

a moving average filter and a symmetric FIR filter.

When using the FIR filter, you will see the signal dynamic

in the selected frequency range (2 … 100 Hz) without a

reduction of the signal amplitude. The delay time is

constant over the complete frequency range.

When using the moving average filter, the signal amplitude

is reduced with increasing frequency.

The FIR filter is preferably used for dynamic tests. The

moving average filter shall be used to achieve a smoother

signal.

Please note that signal accuracy and dynamic decreases

with increasing smoothing of the signal (higher filter times

with the moving average filter, lower frequency limit with

the FIR filter).

4.4.1 Moving Average Filter

The moving average filter can be set within the range of

8 … 512 ms. Signal delay increase and signal accuracy and

signal dynamic (as well as noise) decrease with ascending

values.

8 ms

Increased signal detail and dynamics (as well as noise)

minimum signal delay

8 … 512 ms in steps from 4 ms – switchable in CeCalWin Pro

512 ms

Smoothest signal

Maximum signal delay

Use CeCalWin Pro Software to change the settings. Please

note that in CeCalWin Pro Software multiple of 4 ms are

set.

Non-Contact Microwave Sensors Type CMSTRA

Page 16 CMSTRA_002-573e-06.17

4.4.2 FIR Filter

With the FIR* filter the limit frequency can be set in

varying steps with CeCalWin Pro Software. A lower limit

frequency means also a lower signal dynamic. The delay

time of the filtered signal is stated in brackets. You can

take over this value to your data acquisition, to show all

signals (e.g. trigger signals) isochronous.

Use CeCalWin Pro Software to change the settings.

* FIR = Finite Impulse Response

4.5 Status Byte via CAN Bus

The Sensor sends three data frames via CAN bus: one data

frame, one optional data frame and one combined

information frame (ID status frame).

The status frame contains information about sensor

settings and function, which can be used as additional

control and evaluation criteria for measurements.

For detailed information on the data byte function please

refer to Chapter 6.3, CAN Protocol, which also shows how

the data bytes of the CAN message frames are arranged.

Set-up and Connection

CMSTRA_002-573e-06.17 Page 17

5. Set-up and Connection

5.1 Mounting Options

 Position the sensor to accommodate the lowest possible

operating distance

 Mount the sensor as near as possible to the pitch-angle

axis

 Make sure that no moving parts are positioned within

sensor’s filed of radiation to avoid false readings

 Ensure that the sensor head is adjusted parallel to the

measuring surface and the vehicle’s longitudinal axis

 Mount the sensor in a way that avoids splash water

coming into the course of radiation

 Mounting position of the sensor antenna should be as

far as possible from the tires; if the sensor is mounted to

close to the tires it could partially acquire wheel rotation

during the measurement which would falsify the speed

measurement results

Fig. 2: Possible mounting positions

Steel armored surfaces (reinforced concrete) may cause

measurement errors.

*

recommended mountin

g

p

ositions

*

Non-Contact Microwave Sensors Type CMSTRA

Page 18 CMSTRA_002-573e-06.17

5.2 Sensor Mounting Jig

Fig. 3: Dimensions sensor head

5.3 Mounting Devices

Fig. 4: Microstar II mounting devices

Suction Holder

Art. No. KCD17418

Magnet Holder

Art. No. KCD17417

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Kistler CMSTRA Owner's manual

Kistler CMSTRA Owner's manual

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