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Bus Detection

 

  

 
 

 

Loop Detector Application Notes    SLD4 

667/HQ/45200/101 

 12 

 

3.3.

 

Advanced Configuration Setting 

The following are suggested settings applicable for detecting buses with the SLD4 Loop De-

tector; 
  

Suggested Bus Detection Settings 

Setting 

Value 

Comment 

Switch Config 

Disable 

This will allow for specific 

thresholds to be set. 

Loop Mode 

Hz 

 

Table 5 : Suggested Bus Detection Settings 

 

3.3.1.

 

Bus Detection Threshold Setting Process 

 

1

 

Click on the Read button to load the current detector configuration into the tool for editing. 

See Figure 1below. 

Figure 2 : Reading the SLD4 Configuration

 

Read Button 

Содержание SLD4

Страница 1: ...667 HQ 45200 101 SLD4 Loop Detector Application Notes Feb 20 Issue 3 ...

Страница 2: ...ector 11 3 3 Advanced Configuration Setting 12 3 3 1 Bus Detection Threshold Setting Process 12 3 4 Additional Options 15 4 Tram Detection Applications 16 4 1 Tram Detection Applications 16 4 2 Basic Setup of Detector 16 4 3 Advanced Tram Configuration Setting 16 4 3 1 Gapping 16 4 3 2 Sticking On 17 5 Rail Crossing Applications 18 This section is concerned with vehicle approaches to rail crossing...

Страница 3: ...1 Basic Classification Settings 25 7 2 General Vehicle Classification Configuration 25 7 3 Single Loop and Double Loop 26 7 3 1 Mapped Classification 27 8 Parking Bay Applications 33 8 1 Parking Bay Monitoring typically used for EV Chargers 33 8 2 Presence Time bay occupation time 33 8 3 Adjacent Bay Detection 33 9 Troubleshooting 34 9 1 Refreshing SLD4 Configurator Setup 34 9 2 Serial Cable conne...

Страница 4: ...Profile with New Threshold 21 Figure 11 Disconnecting the Serial COM Interface 22 Figure 12 Example Loop Dimensions for Bicycle Detection 23 Figure 13 General Vehicle Loop Configuration 25 Figure 14 Loop Frequency 26 Figure 15 Loop Status 26 Figure 16 Location of Classification Settings 27 Figure 17 Classification Mode Selection General Tab 27 Figure 18 Classification Bin Configuration 28 Figure 1...

Страница 5: ...es SLD4 667 HQ 45200 101 5 List of Tables Table 1 External Document References 8 Table 2 Terms and Abbreviations 8 Table 3 Link and Switch Function 10 Table 4 Inductance Jumper Settings for Detection 10 Table 5 Suggested Bus Detection Settings 12 ...

Страница 6: ...y other Document or Handbook associated with the equipment including but not restricted to the following i The equipment must be correctly connected to the specified incoming power supply ii Only trained competent persons should work on this equipment iii Any power tools must be regularly inspected and tested iv Any personnel working on site must wear the appropriate protective clothing e g reflec...

Страница 7: ... Electric fields or electrostatic discharge can cause malfunctions through damaged individual components integrated circuits modules or devices 3 Only pack store transport electronic components modules or devices in their original packaging or in other suitable materials e g conductive foam or anti static bags 4 Ensure that the user is discharged prior to handling any modules This can be achieved ...

Страница 8: ... UK 667 HE 20664 000 Installation and Testing General 667 HE 31699 000 Loop Inductance Calculator 667 HQ 45200 000 SLD4 Users Quick Start Guide 667 HQ 45200 001 SLD4 Intelligent Detector Backplane Quick Start Guide 667 TZ 45216 000 SLD4 configuration tool software Table 1 External Document References 1 3 Key Terms and Abbreviations Key Terms and Abbreviations BMS Business Management System Siemens...

Страница 9: ...ool 667 TZ 45216 000 7 USB cable interface 702 4 08535 000 AC Supplies When using 24 AC supply to the detector only use battery powered interface equipment e g laptop PDA Do not connect mains powered connected interface equipment to the SLD4 Fail ure to observe these precautions may damage the detector and or the connected device 2 1 SLD4 Loop Inductance Link Settings The links for loop sensitivit...

Страница 10: ...vity The detector threshold may either be set in Hz or as a percentage of loop inductance change ΔL L Which you use only depends upon which is most convenient for the applica tion In general it is recommended that Hz mode is used for large vehicles tram bus as this provides easier value adjustment for large vehicles The value is a whole number in the thousands range for an inductance change it wou...

Страница 11: ...euing traffic Note The suggested default loop for bus detection is 10M by 3M with 2 turns Larger loops can be used if detection is to be limited to larger buses Note When using large loops smaller vehicles such as cars vans do not occupy sufficient area of the loop at any one time and the majority of the length of these types of vehicle has a much larger ground clearance Therefore they will not ca...

Страница 12: ...ector Suggested Bus Detection Settings Setting Value Comment Switch Config Disable This will allow for specific thresholds to be set Loop Mode Hz Table 5 Suggested Bus Detection Settings 3 3 1 Bus Detection Threshold Setting Process 1 Click on the Read button to load the current detector configuration into the tool for editing See Figure 1below Figure 2 Reading the SLD4 Configuration Read Button ...

Страница 13: ...sitivity Hz Hz should be left at the default 20 until the loop sensitivity has been assessed using the Monitoring and simulation page details of which are shown in Figure 5 See also 2 2 SLD4 Sensitivity for explanation of Hz versus d D settings 4 The other tabs in this application can be left to their default settings 5 Once these changes are made the Write Button should be clicked Figure 3 Settin...

Страница 14: ...ther vehicles Cars Vans etc will have a lower deviation should be set to a sensitivity value 20 less than the deviation for the target vehicles In the example shown below the sensitivity will be set to 1200Hz and then the Write Button clicked set up is now complete but can be adjusted at any time by using the Configurator tool A threshold of 1200Hz falls mid way between the devia tions for buses a...

Страница 15: ...s It is possible to connect the single bus loop into two detector channels and configure the sen sitivity separately so that one channel will detect only busses while the other channel will de tect all vehicles This provides a low cost method of vehicle detection with bus discrimination from a single loop Capture vehicles button Captured profile ...

Страница 16: ...nced Tram Configuration Setting If you experience difficulties with configuring the SLD4 with the tool then refer to section 9 Troubleshooting or the General Handbook 667 HB 45200 000 for further guidance 4 3 1 Gapping When the SLD4 is set to default settings there may be some detection issues Gapping occurs when the detector loses the detection of the tram while the tram is still stationary or st...

Страница 17: ...ring Simulation dis plays a filtered version of the raw signal from the detector This is appropriate for nor mal vehicle traffic but not for trams 4 3 2 Sticking On Sticking on also be referred to as flickering occurs when the detector continues to show a detection after the tram has left the detection area This can sometimes be caused by vehicles in adjacent lanes To resolve this increase the thr...

Страница 18: ...se positives should occur as these could interfere with the rail traffic 16 In the event of faults it is possible that the customer may wish to replace a module without a software tool or support from Siemens using their own maintenance ser vice Plug and play operation must be possible 5 2 Basic Setup of Detector The loop detector card is setup with factory settings and connected to the relevant l...

Страница 19: ...he inductance value of the loop Refer to section 0 4 SLD4 Loop Inductance Link Settings 5 In the Monitoring Simulation menu in the SLD4 Configurator software click on the Record All Vehicles tab 6 Drive over each loop in question at least five times Each pass should result in a vehi cle record which includes a vehicle profile The respective loop indicator LED should turn red when there is a car pr...

Страница 20: ...icle Records German language settings Figure 8 Vehicle Profile 7 Note the frequency value of the trigger threshold in AUTO Sensitivity Mode In Figure 8 the value would be 19Hz 8 Use the following table which shows what sensitivity in DL L of the trigger thresh old is set based on captured results ...

Страница 21: ... 10 New Vehicle Profile with New Threshold 10 The MODE LED double flashes flashes as the same speed as the POWER LED 11 Push the reset button for approximately 3 seconds until the POWER LED is perma nently illuminated 5 4 Confirmation of Performance Drive over each loop in a car at least two times and record the signals Test Confirmation Criteria If required adjust the sensitivity from the table a...

Страница 22: ...in the SLD4 Configurator software click on the Recording Ended Aufnahme beendet tab 2 Save the recording which creates the veh file File name structure Kunde_BUeNr_IBN_SLD4_Datum veh Example SBB_BUe94_IBN_SLD4_20161201 veh 5 5 Putting the loop detector into operation 1 Screw the module in tightly 2 Disconnect the connection to the module using the software Figure 11 Disconnecting the Serial COM In...

Страница 23: ...owing settings are recommended 1 Use manual loop sensitivity setting Hz mode 2 Ideally use an appropriate loop geometry 6 1 Loop Type for Bicycle Detection Applications The chevron loop is normally recommended for bicycle detection A normal vehicle loop does not provide the ideal sensitivity for a bicycle Figure 12 Example Loop Dimensions for Bicycle Detection ...

Страница 24: ...icycle detection Typically the loops are very similar to standard traffic loops and so the inductance most probably needs to be set to the lowest level Links PL3 to PL6 must be set to 1 2 and 3 4 as this is the low inductance range Refer to 2 1 SLD4 Loop Inductance Configuration for information 6 3 Advanced Bicycle Configuration Setting If you experience difficulties with configuring the SLD4 with...

Страница 25: ...ine the consistency of the vehicle classifications If phantom detections are ob served the sensitivity should be increased incrementally in 0 01 DL L steps A sensitivity of 0 12 should ensure no phantom detections occur but could decrease the motorbike detection accuracy The user should also check that each SLD4 card is operating on a unique loop frequency Loops 1 to 4 on each card can share the s...

Страница 26: ...er clicking refresh a few times the status codes display should be blank Figure 15 Loop Status 7 3 Single Loop and Double Loop There are extensive options available which allow classification in both single loop and dou ble paired loop modes Double loop classification supports multiple vehicle classes typically single loop classification can only distinguish between a couple of vehicle classes e g...

Страница 27: ... detect events can be individually assigned to the physical outputs and GSPI Figure 16 Location of Classification Settings 7 3 1 Mapped Classification The mapped classification classification bins config tab as shown in Figure 18 allows up to 9 classification bins also referred to as class to be mapped The Mapped setting shown Figure 17 must be selected to use this feature Each bin has a Class ID ...

Страница 28: ...rence handbook 667 HB 45200 000 for details The mapped classification feature provides great flexibility in creating vehicle classes but this feature is quite complex The two examples below sections 7 3 1 1 and 7 3 1 2 illustrate how this feature can be used Contact Siemens support if additional help is required in setting up complex classification mappings Figure 18 Classification Bin Configurati...

Страница 29: ...ensure the ve hicle speed and length will not affect the classification In this example Classification bins 3 7 are not used and left as the default settings min and max speed length set to 0 to ensure no vehicle could meet the class criteria Classification bin 8 acts as the Unknown class and left as the default setting Any vehicle not classified as within class 0 1 or 2 will be classified as clas...

Страница 30: ...Classification Setups Loop Detector Application Notes SLD4 667 HQ 45200 101 30 Figure 20 Digital output configuration Example 1 Mapping ...

Страница 31: ...class 5 1 TruckTrailerArticulated min speed 26 8m s Figure 21 Example 2 Classification bin configuration Note If the classification bins overlap change the Class ID to a discrete binary bit integer values to ensure the overlapped classification value makes sense An example of what this means is with the following config a Car with 4 6m length will be given classification value of 3 binary 0011 and...

Страница 32: ...Classification Setups Loop Detector Application Notes SLD4 667 HQ 45200 101 32 Figure 22 Digital output configuration for Example 2 ...

Страница 33: ...tected as occupied during the 45 minute charge time It is normal and desirable for permanent detect to occur when the parking bay is occupied In order to prevent detection of adjacent vehicles it may be necessary to reduce the sensitivity of the loop The presence time is therefore set to maximum and sensitivity reduced The presence time is set to maximum as shown below 24 Hrs 86400 0 seconds Figur...

Страница 34: ...ctor to its default settings by selecting the Revert to Default button in the bottom right hand corner of the SLD4 configuration tool This will ensure the SLD4 Configurator uses the latest available configuration settings for the detector you are configuring Once the current configurations are removed connecting to an SLD4 will allow the upload of the current schema from the detector This is then ...

Страница 35: ... Kingdom www siemens co uk traffic Subject to change without prior notice Order No 667 HQ 45200 101 Siemens Mobility Limited 2019 More information Siemens Traffic www siemens co uk traffic Siemens Mobility http www mobility siemens com mobility For more information on SLD4 scan the QR code ...

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