Net Brake User Manual
Contents
1. Fraser Gauge and Tool Company ZS ne Brake Table of Contents N t BAC LEE Er ea 1 Considerati E 2 ETC NEE 2 HOW do YOU do a Test sais ccs scsicciesscitsceccentcexessenccceersncudenreepecceresncecrentenmeeeveoreneenes 2 HOW do you Save a Test cccrscsccestocseccicniesecasexceniuccorcdecssepennderterastemenvereereecenens 3 Revision History Fraser Gauge and Tool Company the Kl brake A GNN hl specialist a cont fi Net Brake Net Brake is a simple innovative device that does not require extensive user interaction This manual describes how to carry out a brake test and view results using the device The Net Brake device is designed to measure the efficiency of a vehicle s brakes using an accelerometer incorporated in a_ tablet device people Fraser Gauge and Tool Company the Bra ke brake specialist 5 Considerations 1 Make sure the test is carried out on a flat road do not do the test up hill or down hill 2 Make sure the vehicle s tires are inflated as per the tire manufacturer specification 3 When the examiner does the test make sure the vehicle is Moving over 20 MPH 30 km h at the moment of application of the brakes General Information 1 Open the application by pressing the icon 2 You will see the application main screen 3 To carry out a new test select New Test 4 To view saved tests previous tests press Saved Tests The total number of saved tests is indicate2. Test Results Interpretation Net Brake Test Report Serial Number C2A150FC EA6D 44A0 B8AD B1FC6FEACB06 Application Version 1 34 Last Calibrated Thursday 10 July 2014 5 48 17 AM Test Started Thursday 10 July 2014 6 09 07 AM Road Surface Type Asphalt Road Condition Dry Vehicle Registration UNIT 2 TEST 3 ON FLOOR left hand drive Test Number 000023 Deceleration Graph Maximum Deceleration 0 91g Average Deceleration 0 51g Maximum Pull 0 05g left Average Pull 0 03g left Estimated Speed 23 MPH 37 km h Stopping Time 2 28 seconds Stopping Distance 34 87 feet 10 63 meters Stopping Distance at 20 MPH 14 75 feet 4 49 meters 32 km h for max decel Stopping Distance at 20 MPH 26 02 feet 7 93 meters 32 km h for avg decel Location of Test Latitude 42 37279920 N Longitude 83 02444580 Examiner Geoff Examiner Signature Explanation of Terms Maximum Deceleration Front Rear This result corresponds to the Peak Brake Efficiency This is the figure to be used in the UK for Statutory MOT Testing This is the maximum recorded G force expressed as a percentage one G Average Deceleration This refers to the average G Force m s2 over the duration of the test in the front to rear direction Peak Acceleration Left Right This is the maximum recorded G Force m s2 detected during the test in the
3. certificate HTML to allow re sending via email v1 25 Add calibration screen Fix display of table border in HTML reports Remove patent number text v1 24 Send timezone of report to website v1 23 Added support for fixed trial period expiry date v1 22 Enabled upload of reports to new Net Brake website Add link to website in action bar Store test results in correct data types rather than strings to enable website queries v1 21 Add option to remember previous vehicle registration numbers Add option to delete all or a selected set of stored test reports Remember previous road condition and surface when starting new test Change Save to device option to copy report PDF to NetBrake directory on SD card and prompt user to open external File Manager app if one is available Fix crash when SD card is unavailable message is shown on app startup v1 20 Detect all bluetooth devices with the word printer in their name as valid printers and allow the user to select from a list if there are multiple paired printer devices Change report upload address v1 19 Change reports to estimated speed Fix regression when pressing cancel on data entry screen Display most recent reports at the top of the saved report list v1 18 Enhance detection of whether test was done in a vehicle or not Improve accuracy of test speed calculation If test is invalid allow viewing
4. of report regardless of demo mode and include the reason why the test was determined to be invalid in both report and diagnostic CSV file This will be useful in case values need adjusting based on different vehicles Fraser Gauge and Tool Company the RS gt Ss brake fos Ka specialist i FR ID KL people or conditions where a correctly done test is still marked as invalid Update bluetooth printed report to show the same data as PDF and HTML Add calculated max pull to report current value is average v1 17 Fixed calculation of stopping distance Reduced latency in sensor filtering and exclude oscillations at the end of the test to improve calculation of average deceleration Combine left and right pull values in report Round speeds to whole numbers in report and include left right hand drive Adjust valid sensor ranges based on further tests If test is invalid report which axis s caused it v1 16 Fixed issue where if GPS is disabled test report is missing several results values Fixed an issue where the placement adjustment data is not cleared between tests v1 15 Include calibration diagnostics logs when sending calibration certificate via email Cater for the device not being placed perfectly flat at the start of the test v1 14 Added option to include diagnostics logs when sending report via email Adjust valid sensor ranges v1 13 Mark braking start finish and max deceler
5. Fraser Gauge and Tool Company brake Nosema ialist 3 y specials i oes amp Revision History Rev 1 00 8th September 2013 e Created 1 40 Fix incorrectly displayed trial has expired message v1 39 Only allow de activation of app after admin password is entered 1 38 Keep same serial number after app uninstallation re installation on the same device and allow de activation reset of serial number 1 37 Allow activation of the app after the trial period has expired 1 36 Minor bug fixes 1 32 Minor bug fixes 1 29 Ensure tablet vibrates when calibration completes final step Remove error component from velocity calculation Allow testing of calibration based on average values Fix handling of back button 1 28 Launch app on device bootup 1 27 Implement 6 point calibration mechanism using gauss newton method Capture and perform gauss newton on all accelerometer data for diagnostics Display degrees with zero decimal places and acceleration with two in calibration screen Add button to change display mode on calibration screen Improve graphical display of spirit bubble 1 26 Display calibrated values in both G and degrees If calibration has already been done allow review of calibrated values without password separately to performing calibration again Fraser Gauge and Tool Company e the 2 sc Brake specialist people 5 Store calibration
6. Fraser Gauge and Tool Company the brake specialist people Net Brake User Manual Brake US Headquarters 1352 Harvard Road Grosse Pointe MI 48230 313 882 9192 Managing Director Geoff Lawrence ne Brake Copyright 2013 2014 by Fraser Gauge netBrake Last Updated 20 June 2014 Neither the whole nor part of the information herein nor the product described may be adapted or reproduced in any material form except with the prior written consent of Fraser Gauge netBrake The product described in this manual is subject to continuous development and improvement All information herein of a technical nature and particulars of the product and its use are given in good faith but are liable to change without notice All maintenance or service of this product must be carried out by Fraser Gauge netBrake or its accredited agent and loss or damage caused by installation maintenance or service which is carried out by unauthorized personnel will not be accepted This manual is intended only to assist the reader in the use of the product and therefore Fraser Gauge netBrake shall not be liable for any loss or damage whatsoever arising from the use of any information or particular in or any error of omission from this manual or any incorrect use of this product Fraser Gauge netBrake welcome comments or suggestions relating to the product or this manual All correspondence should be addressed to Manager Geoff Lawrence
7. ation on graph Add option to save report to local device to aid usability Disable test mode preference not available in this version Add ability to print reports to bluetooth printer Added licensing mechanism v1 12 Fix display of spirit level on HTC Desire X v1 11 Show progress bar and spirit levels on test initialization screen Add demo model preference to disable validation of sensor data and allow production of report for demonstration purposes Ensure all files created by the application are deleted when the app is uninstalled Generate and display calibration certificate after successful calibration and allow email of PDF copy Prompt user to perform calibration on launch of the application and start of new test if no calibration has been done previously or the last calibration was done more than 15 days ago If X Y Z sensor values are out of range produce no report and show message indicating Fraser Gauge and Tool Company the De vn Ba brake L specialist i a CO a people that the test was not conducted properly with a link to go to the instructions screen Disable access to instructions and options screens whilst test is in progress Display both imperial and metric values in report Display MPH and km h in help and on report Calculate stopping distance at 2OMPH for max and average deceleration and include on report Fix blocky graph view v1 10 Scale app
8. d in brackets 5 Press the top right corner to select Options From here you can set various application parameters Performing a New Test 1 Press New Test from the main menu 2 Enter the examiner name using the keyboard 3 Enter vehicle registration plate number 4 Select road condition by pressing the corresponding Change button Fraser Gauge and Tool Company the sc Bra ke specialist people 5 Select road surface type by pressing the corresponding Change button 6 When done just press Start Test 7 Position the tablet on the passenger seat or floor of your vehicle with no more than 15 degrees of slope Make sure the unit is FLAT and the arrow must be in the direction of the moving Vehicle 8 Accelerate the vehicle over 20 MPH 30 km h and perform a hard brake emergency brake to bring the vehicle to a full stop 9 The application will show Finalizing Test 10 The application will show the test report on screen 11 Press Send Report to send a copy of the report to an email Address or print to a Bluetooth printer 12 Press Done to return to the main menu Viewing Saved Test Reports 1 Press Saved Test from the main menu 2 Select the report to show from the list The report will displayed On screen 3 You can review the test on screen or send it via email by pressing the Send Report button Fraser Gauge and Tool Company e the sc Brake specialist gt people 3
9. ies available which means it looks slightly different to the PDF Implement persisted test counter incremented each time a test is done Include deceleration graph in PDF report Rename Inspector to Examiner v1 02 When accelerometer data reaches end of graph span graph is moved to keep data being displayed Added vehicle registration field to data entry form Display app version number dynamically Generate PDF report content and style still unfinished Display arrow and text to prompt the user to position the tablet at the start of the test font size and layout will be adjusted Correct samping rate and improve display of data on real time graph v1 01 Added ability to cancel data entry and display real time accelerometer data x y z Fraser Gauge and Tool Company az the eS lt a gt Exe brake i eee specialist Wem i people i Gel Ses E v1 00 Initial version with serial number animated buttons background and data Fraser Gauge and Tool Company lt Brake brake specialist people
10. left or right direction NOTE This feature is included for reference only There may not be any regulatory Fraser Gauge and Tool Company the 2 brake specialist people 3 Data available to determine if a test result should be considered a Pass or Fail result Road camber tyre condition driver action and so on may cause a test vehicle to pull off centre under heavy braking If the pull is noticeable it is suggested that the brake components be checked for signs of wear or leaks etc Vehicle pulls to the Left or Right This is an indication of the direction from centre the vehicle is deviating toward during the test Stopping Distance metres This is an estimate of the distance the vehicle travels from commencement of braking complete stop It is calculated from Average Deceleration and the test time Test Speed km h This is an estimate of the speed at which the vehicle was travelling when braking was commenced It is calculated from Average Deceleration and Stopping Distance Brake Efficiency This is the Average Brake Efficiency figure It should not be used in the UK for Statutory MOT Testing netBrake is in Compliance with the MOT section 3 7 Brake Performance Roller Brake Test Section B This information can be found at the MOTUK website here http www motuk co uk manual_370 htm refer to Maximum Deceleration at beginning of Explanation of Terms It is calculated from Test Speed and Stopping Distance
11. lication for different screen sizes Correct interpretation of sensor values for devices with different default orientation Correct application of calibration values depending on whether LHS or RHS drive is selected Change X Y Z labels to Acceleration Lateral Vertical Display stopping distance in feet when imperial is selected v1 09 Correct calculation of report values Add ability to calibrate accelerometer via options screen Upload report to blueoz website v1 08 Rename app to Net Brake Update app instruction screens Add option to upload report to website v1 07 Rename app to E Brake Ability to create trial versions of the app based on time limit Display total tests completed in options screen Record GPS location at conclusion of test and include in report Use G instead of m s s on graph and report Added average and maximum deceleration to report Added left and right pull to report Change road surface display text Add left hand drive vs right hand drive preference Add instructions screen with html based display of content v1 06 Automatically generate and display report when test completes Store and send sensor data generated during test for diagnostics purposes Add post braking state to ensure data is capture for a further 2 seconds after braking is finished Fix layout of test direction arrow and display test state changes Fix display of tes
12. t mode preference Hide start button during test Fraser Gauge and Tool Company the eS vn Ba brake fried specialist s A piogia l EWF amp Speed up button animation v1 05 Add preferences screen with metric imperial test mode and remember examiner name settings Remember examiner name if that option is selected and always use auto complete to suggest previously used names Display report values in metric vs imperial depending on user option Ensure report is displayed correctly on smaller tablet screens still need to do more work to ensure app scales right down to phone size Implement detection of braking and stopping during test execution workflow skeleton is implemented but report still needs to be generated and displayed automatically and UI is not yet complete v1 04 Reports can be sent via email and other means In app report viewer can be zoomed Reports can be deleted New icons for Send Report and Done buttons v1 03 Remove test result from report Save all report data privately to the application PDF is still generated in publicly accessible area on sdcard under folder called BrakeMeter Display number of saved reports on Saved Tests button and display a dialog with the list of reports when pressed Show saved reports in the application HTML is used to display due to PDF not being supported in Android and no free working librar
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