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K3502

H3502IP-2

ULTRASONIC RADAR

Summary of content (16 pages)

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ULTRASONIC RADAR K3502 onic w g ultras in s u ts objec Detects H3502IP-2 aves
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Features & Specifications Detects objects using ultrasonic waves. When the preset minimum distance is crossed, an audible signal is generated Specifications: Detection range : 5cm - 1,5m (adjustable) Detection angle : 5° Transmitter frequency : 40KHz. Sample frequency : 26Hz. Power supply : 10 - 15VDC / 16mA max.
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Assembly hints 1. Assembly (Skipping this can lead to troubles ! ) Ok, so we have your attention. These hints will help you to make this project successful. Read them carefully. 1.1 Make sure you have the right tools:  A good quality soldering iron (25-40W) with a small tip.  Wipe it often on a wet sponge or cloth, to keep it clean; then apply solder to the tip, to give it a wet look. This is called ‘thinning’ and will protect the tip, and enables you to make good connections.
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REMOVE THEM FROM THE TAPE ONE AT A TIME ! DO NOT BLINDLY FOLLOW THE ORDER OF THE COMPONENTS ONTO THE TAPE.
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Construction (1) Assembly of the base PCB : P3502B 1. Jumpers 3. Resistors R...  J 2. Diodes. Watch the polarity!  D1  D2  D3  D4  D5 5. IC sockets, Watch the position of the notch! : : : : : 1N4148 1N4148 1N4148 1N4148 1N4007 CATHODE D...  R1  R2  R3  R4  R5  R6 : : : : : : 10M 22K 27K 27K 47 10K (1 - 0 - 6 - B) (2 - 2 - 3 - B) (2 - 7 - 3 - B) (2 - 7 - 3 - B) (4 - 7 - 0 - B) (1 - 0 - 3 - B)  IC1 :  IC2 :  IC3 :  IC4 :  IC5 : 16p 16p 14p 14p 16p 6.
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Construction 7. Electrolytic capacitor. Watch the polarity ! 10. Buzzer 11. IC’s mounting 1 C6 : 470µF PIN 1 C...  BUZ1 8. Trim Potentiometer  RV1 : 470K 9. Screw connectors  J1 : 2p + 2p  J2 : 2p + 2p 6 RV1 Be sure to put the longest connection into the bore marked ‘+’  IC1 :  IC2 :  IC3 :  IC4 :  IC5 : CD4060 or eq. CD4020 or eq. CD4068 or eq. CD4093 or eq. CD4049 or eq.
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Construction (2) Assembly of the receiver PCB : P3502S 1. Resistors 3. Transistor 5. Electrolytic capacitors. Watch the polarity !  T1 : BC547B C10 : 10µF C11 : 100µF R...  R7  R8  R9  R10  R11 R12 R13  R14 : 15K : 15K : 15K : 15K : 1K : 1K : 10K : 270K (1 - 5 - 3) (1 - 5 - 3) (1 - 5 - 3) (1 - 5 - 3) (1 - 0 - 2) (1 - 0 - 2) (1 - 0 - 3) (2 - 7 - 4) C... 4. Capacitors 6. Screw connectors 2. IC socket.
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Construction 7. Sensors  SENS 1 : MA40A5S or eq.(marked with T).  SENS 2 : MA40A5R or eq. (marked with CTD) Either on the print or connect them to the soldering terminals, see chapter concerning the installation in the car. 8 8.
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Test (3) TEST Connect the points GND, +V, RW, DIS, S1 and S2 of the main PCB to the corresponding points on the receiver PCB.  Make sure that the distance between the receiver print and the base print is approx. 50cm. Adjust the trimmer RV1 at the middle position RV1. Connect a 12VDC power supply (or a battery) between the points GND (-) and +.
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Installation  Install the print behind the bores using spacing sleeves, so that the sensors are facing the bores properly without touching the housing. Fig. 1 Fig. 2 B) With the sensors in horizontal position (fig. 2): In this case the sensors are simply mounted on the print. Now realise the gaps in the housing as shown on the drawing 4.0 Install the print behind the bores using spacing sleeves, so that the sensors are facing the bores properly without touching the housing.
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Installation FINE WIRE GAUZE SENSOR FINE WIRE GAUZE CASE Fig. 3 SENSOR CASE Close the housing as watertight as possible f.i. by using silicone. Surch for a suitable place somewhere in the trunk, to built in the base print (by preference as close as possible to the sensor, see below) Find a suitable place, approximately in the middle of the backside of the car, for installing the sensors f.i. : underneath or above the bumper.
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Connection & use (5) DEFINITIVE CONNECTION Connect the receiver to the base print. Connect the terminal GND of the base print to the - of the car (chassis) Connect the terminal ‘+’ of the base print to the ‘+’ of the reverse light. (6) USE The circuit is activated as soon as the gear is shifted in reverse (this is marked by a 'bip' tone) and will detect any obstacle within the range of the sensors, the detection distance (i.e. the sensitivity) being adjusted by means of the trimmer RV1.
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Connection P3502B S1 V D+ GN + P3502S D GN +V S2 S2 DIS D GN P3502B S1 RW RW DIS + S1 S2 RW D GN +V 13
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Schematic diagram (7) Schematic diagram (Control section) 14
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PCB (8) PCB’s PCB layout P3502S PCB layout P3502B 15
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VELLEMAN NV Legen Heirweg 33, B-9890 GAVERE Belgium (Europe) Modifications and typographical errors reserved ,© Velleman nv.