velleman SPBS4 Reversing Radar with LCD Display User Manual
- June 13, 2024
- Velleman
Table of Contents
velleman SPBS4 Reversing Radar with LCD Display
Product Information
| Product Name | SPBS4 – Reversing Radar with LCD Display |
|---|---|
| Manufacturer | Velleman |
| Features |
- Wide detecting range with a limited blind area
- High stability and reliability without false alarm
- Easy installation
- Operates under extreme weather conditions (e.g. heavy rain,
snow, strong wind, extreme temperatures)
Specifications|
- Operating voltage
- Rated voltage
- Operating current
- Displaying distance
- Blind area
- Sensor frequency
- Warning modes
- Display
- Operating temperature
- Storage temperature
Product Usage Instructions
Use
Put the car into reverse and the system will automatically be activated and beep once to inform you that the system check mode is engaged.
System Check
When powered on, the system automatically detects the sensors.
In case of malfunction or if a sensor goes haywire, the buzzer and the LCD
display will alert the driver to the situation for 3 seconds before the system
switches to its normal working mode.
Note: Neither the LCD nor the buzzer will warn the driver of obstacles
located in the detection zone of a malfunctioning sensor.
System check: LCD warning (fig. 2)
Note that the LCD doesn’t display a direction for obstacles located behind a malfunctioning sensor(s).
Warning Modes
a) Warning Zones
Safety zone: 100 to 200cm between bumper and obstacle
Caution zone: 40 to 100cm between bumper and obstacle
Danger zone: less than 40cm between bumper and obstacle
When an obstacle appears in different warning zones, the system will warn you accordingly in both modes. The SPBS4 uses an LCD display plus a built-in buzzer to warn the driver of the exact location of the obstacle within 1m of the side sensors. The warning volume of the built-in buzzer is adjustable.
b) Important remarks (fig. 3, 4, 5, 6, 7 and 8)
In figure 3 (see below), surface a is closer to sensors than surface b, but surface b is more reflective than surface a. As a result, surface b is detected first, whereas surface a may not be detected. If obstacle c has a smooth, glassy surface and angle A is very wide, this obstacle may not be detected at all.
Introduction
- To all residents of the European Union Important environmental information about this product
- This symbol on the device or the package indicates that disposal of the device after its lifecycle could harm the environment.
- Do not dispose of the unit (or batteries) as unsorted municipal waste; it should be taken to a specialised company for recycling.
- This device should be returned to your distributor or to a local recycling service.
- Respect the local environmental rules.
- If in doubt, contact your local waste disposal authorities.
- Thank you for buying the SPBS4! The SPBS4 reversing radar uses the principle of distance measurement and fuzzy logic. As the vehicle is slowing backing up, the ultrasonic system detects obstacles located behind the vehicle and warns the driver via clear audio and/or visual signals, who is then able to avoid the obstacles.
Features
- Wide detecting range with a limited blind area
- High stability and reliability without false alarm
- Easy installation
- Operates under extreme weather conditions (e.g. heavy rain, snow, strong wind, extreme temperatures)
Specifications
- Operating voltage DC 10-28V
- Rated voltage DC 12V
- Operating current 150mA
- Displaying distance 0.22~2.5m
- Blind area < 22cm
- Sensor frequency 40kHz±1kHz
- Warning modes sound, distance & direction
- Display LCD
- Operating temperature -30 to +70°C
- Storage temperature -35 to +85°C
Description
(fig. 1)
- Detection unit: composed of 2 – 4 ultrasonic sensors
- Control unit: microprocessor-controlled, uses a signal processing circuit
- Warning unit: Buzzer + LCD display. When the car reverses, this unit warns the driver of obstacles via audio + display of direction of and distance to the obstacle.
Use
System Start-up
- Put the car into reverse and the system will automatically be activated and beep once to inform you that the system check mode is engaged.
System Check
- When powered on, the system automatically detects the sensors. In case of malfunction or if a sensor goes haywire, the buzzer and the LCD display will alert the driver to the situation for 3 seconds before the system switches to its normal working mode.
- Note: Neither the LCD nor the buzzer will warn the driver of obstacles located in the detection zone of a malfunctioning sensor.
System check: LCD warning (fig. 2)
- Note that the LCD doesn’t display a direction for obstacles located behind a malfunctioning sensor(s). See figure 2 below.
- normal condition
- sensor n° 2 does not work
Warning Modes
a) Warning Zones
- Safety zone: 100 to 200cm between bumper and obstacle
- Caution zone: 40 to 100cm between bumper and obstacle
- Danger zone: less than 40cm between bumper and obstacle
- When an obstacle appears in different warning zones, the system will warn you accordingly in both modes.
- The SPBS4 uses an LCD display plus a built-in buzzer to warn the driver of the exact location of the obstacle.
- Reversing signal: indicates the vehicle is reversing.
- Direction indication: the sensor that detects the obstacle lights on the screen so the driver will know the precise location of the obstacle.
- Area indication: it tells you whether the obstacle is found in the safety, caution or danger zone.
- Distance indication: distance is displayed as soon as obstacles appear within 2.5m behind the vehicle. “-P” is displayed when an obstacle is closer to the bumper than the min. detecting distance
- Beeping distance: the system starts beeping when an obstacle is detected within 1.7m of the central sensors or within 1m of the side sensors. The warning volume of the built-in buzzer is adjustable.
b) Important remarks (fig. 3, 4, 5, 6, 7 and 8)
- The reversing speed must be kept under 5km/h for the system to work.
- The system incorporates highly sensitive ultrasonic sensors and uses fuzzy logic. The blind area is minimal and the SPBS4 has a long detecting range. The detection result measures the distance from a sensor to the surface of the obstacle that reflects the waves. However, the user must remember that the measured distance is influenced by the positions of the installed sensors, the shapes and locations of obstacles, the reflecting angle and other factors. Therefore it is advisable to visually inspect the situation behind the vehicle before reversing.
Detection is not guaranteed in certain cases. A few examples:
- In figure 3 (see below), surface a is closer to sensors than surface b, but surface b is more reflective than surface a. As a result, surface b is detected first, whereas surface a may not be detected. If obstacle c has a smooth, glassy surface and angle A is very wide, this obstacle may not be detected at all.
- Point A in figure 4 (see below) may not be detected.
- Consider figure 5 (see below). Although obstacle Ta-b is closer to the ground than the sensors, surface Ta-b will be detected first because this surface produces the strongest reflection. As obstacle Tc comes closer, however, its reflection becomes stronger than that of Ta-b. Consequently, the system will forget about Ta-b and will instead start warning you for obstacle Tc
- Certain obstacles have a strong absorbance of sound waves e.g. clothing. For instance, a person may not be detected until he/she is approximately 1m behind the vehicle because the person’s clothes absorb the ultrasonic waves (see figure 6 below).
- Certain obstacles are located outside the system’s detection range (see figure 7 below). Obstacle B will be detected while obstacle A may not.
- The system may emit beeps if the road surface is very irregular.
- There is a blind area of 22cm immediately behind the vehicle. Obstacles in the blind area can never be detected, but it’s normal for the system to produce false detection results from time to time (see fig. 8 below).
- blind zone
Precautions
- Keep the sensors clean and remove dirt from the surface if necessary
- Make sure the sensors are kept stable in the right position.
- Replace defective sensors
- Final test is necessary before use
Installation
Required tools:
- voltage test screwdriver or multimeter
- insulating tape
- pencil
- cable clip
- electric drill
- hole cutter
- tape rule
- triangular file
- flat screwdriver
- Phillips screwdriver
- a pair of pliers
- Note: The drill bit, cable clips and double-sided adhesive tape are included in the gift box.
Mounting Location:
- Control unit: to be installed near the reversing light in the trunk
- Warning unit: to be installed in a corner near the dashboard
- Detection unit: sensors to be installed in the bumper.
Installation Procedure (fig. 9):
- First determine where to install the control and warning unit according to the type of vehicle or your experience.
- Make sure the power cable of the control unit can be connected easily.
- For the installation of the sensors read “Tips for sensor Installation”.
- If the sensors are marked with 1, 2, 3, 4, just connect them to the sockets of the control unit bearing the same marks.
- Refer to the connection diagram below.
- control unit
- detection unit
- red wire +12VDC
- black wire -12VDC
- For the power connection, please refer to the detailed instructions in “Connection” (see below).
- Use the double-sided adhesive tape to fix the control unit and the warning unit securely. Please read “Mounting
- Location” (see above) to determine where to mount the units.
- Perform the reversing test (see “Final Tests” below).
Tips for Sensor Installation (fig. 10, 11 and 12)
- Install the sensors inside the bumper. This protects the sensors from interference and enables them to work perfectly under bad weather conditions.
- Different vehicles have different widths so choose the right location to mount the sensors. Take care to install the sensors with the head pointing in a horizontal direction. All sensors must be installed at the same height and at least 50cm above the ground (see fig. 10 below). Make sure the sensor is installed in a spot where no part of the vehicle itself will be detected (see fig. 11 below).
- Drill holes in the bumper and insert the sensors with the “UP” arrow pointing upwards. Make sure the central axis of the sensor is perpendicular to the bumper surface.
- Horizontal and vertical positioning: see fig. 12 below.
Installation Steps
- Mark the installation location with a pencil. Drill the holes using the included drill bit. Remove the burrs from the edges of the holes with a round file. Insert the cables with sensors in the holes in the bumper.
Connection (fig. 13)
- The system is powered by the reversing lights (see fig. 13 below). Use the enclosed cable clips to connect the system’s power cable easily and perfectly with that of reversing lights. Refer to fig. 14 below.
- reversing light
- control unit
- black wire
- red wire
- cable clip
- +12VDC
- reversing light power cable
- control unit power cable
- Put the key in the ignition and turn the ignition to ON. Shift into reverse and double-check the +12V power cable of reversing light with a voltage test screwdriver or a multimeter, then turn off the power.
- Connect the system’s red power cable to the +12V power cord of the reversing light with a cable clip. Connect the system’s black power cable to the ground cable of the reversing light with a cable clip.
Final Tests
Detection Test
- Place an obstacle of ± 1m high at 80 to 100cm behind the rear bumper of your vehicle. Turn the ignition to ON and put the car in reverse. The system should start to beep automatically or display the distance to and the direction of the obstacle. Test the installed sensors individually.
Warning Test
- Place an obstacle of ±50 x 50cm at 80 to 100cm behind the rear bumper of your car. Turn the ignition to ON and put the car in reverse. The system should start to beep automatically or display the distance to and the direction of the obstacle. Vary the distance of the obstacle to the vehicle by moving it forwards and backwards. The system should now beep at different intervals and meanwhile display the distance to and the direction of the obstacle. Move the obstacle left and right: again, the system should beep automatically and display the distance to and the direction of the obstacle.
Disclaimer
- Velleman NV will not be held responsible for any accidents and/or damage caused by the use or possible malfunction of this system.
- For more info concerning this product, please visit our website www.velleman.eu.
- The information in this manual is subject to change without prior notice.
References
Read User Manual Online (PDF format)
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