1 Brief introduction User Manual New microwave sensor is used as human body detector for automatic control of closestool. The sensor adopts frequency modulated continuous wave (FMCW) technique, so has higher ranging accuracy and stronger adaptability compared with doppler sensor. The sensor can detect distance and motion state of ambient human body in real time, and send corresponding signal to master controller of closestool to control automatic opening/closing of cover & seat and auto-flushing. 2 Datasheet 2.1 Pin function definition Microwave Sensor Master Controller No. Label Color Description IN/OUT Voltage 1 2 3 4 5 VCC Red Positive pole of IN 5V power supply D-OUT Orange Digital output GND Black Negative pole of OUT IN
(Thick) power supply SDA Brown Data line of I2C communication OUT/IN SCL Yellow Clock line of I2C IN 5V GND 3.3V 3.3V 1 communication 6 A-OUT Black
(Thin) Analog output OUT 3.3V 2.2 Electrical parameters Parameters Min. Typ. Max. Unit Comments Transmitting frequency Field strength FM period Working voltage Limiting voltage Working current Starting time Detection angle Detection range Detection accuracy Detection range of slight motion Working temperature Storage temperature 24.00 24.125 24.25 GHz FMCW 1.66 4.5
-12 2 0 0
-10
-40 80 1.67 5 80 2.5 40 90 10 1.68 5.5 12 3 250 70
+65
+80 dBuV/m measurement distance1m ms V V mA s cm cm cm Time of a scanning cycle Long-time voltage Short-time voltage Time from powering-on to outputting stably Horizontal direction Vertical derection 3 I2C communication protocol Microwave sensor is always working as slave at any time. 3.1 Setting detection range Master sends: 0x5C, 0x00, 0xXX Comment:
0x5C--- Slave address, write operation 0x00--- Device address 2 0xXX--- Gear value
<0x6C: near gear
=0x6C: middle gear
>0x6C: far gear 3.2 Querying preset gear value saved in sensor Step1: Master sends 0x5C, 0x00 Comment:
0x5C--- Slave address, write operation 0x00--- Data address in device Step2: Master sends 0x5D Slave responds 0xXX Comment:
0x5D--- Slave address, read operation 0xXX--- Depending on actual condition, e.g. 0x6C if middle gear 3.3 Querying distance values of series of gears saved in sensor Step1: Master sends 0x5C, 0x0X Comment:
0x5C--- Slave address, write operation 0x0X--- Device address for saving far/middle/near gears distance values (as per the list in 3.8) Step2: Master sends 0x5D Slave responds 0xXX Comment:
0x5D--- Slave address, read operation 0xXX--- Depending on actual condition 3.4 Querying software version of sensor Step1: Master sends 0x5C, 0x05 Comment:
3 0x5C--- Slave address, write operation 0x05--- Data address in device Step2: Master sends 0x5D Slave responds 0xXX 0xXX Comment:
0x5D--- Slave address, read operation 0xXX 0xXX --- Depending on actual condition 3.5 Setting distance value of far gear triggering Master sends 0x5C, 0x01,0xXX Comment:
0x5C--- Slave address, write operation 0x01--- Device address for saving far gear distance value 0xXX--- Distance value of far gear triggering 3.6 Setting distance value of middle gear triggering Master sends 0x5C, 0x02,0xXX Comment:
0x5C--- Slave address, write operation 0x02--- Device address for saving middle gear distance value 0xXX--- Distance value of middle gear triggering 3.7 Setting distance value of near gear triggering Master sends 0x5C, 0x03,0xXX Comment:
0x5C--- Slave address, write operation 0x03--- Device address for saving near gear distance value 0xXX--- Distance value of near gear triggering 3.8 Comparison table of device addresses and data contents Slave address Device address Data content Comment 0101 110 W/R 0x00 Gear value One of the three: <0x6C, =0x6C
(far, middle or or >0x6C 4 0101 110 W/R 0x01 Distance In hexadecimal format near gear) value of far gear 0101 110 W/R 0x02 Distance Ditto value of middle gear 0101 110 W/R 0x03 Distance Ditto value of near gear 0101 110 W/R 0x05 Software Requiring 2 bytes version 4 Signal definition of digital output pin Digital output pin remains low electric level. Once target object moves in the distance of the preset gear, the sensor output pulse signal with special frequency, which would keep till the object moves out of the distance range. The period of the pulse signal is 50 1ms, and the duty ratio of high/low electric level is 50% with high electric level of 5V. 5 Certification information 5.1 FCC/IC certification This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including interference that may cause undesired operation. 5 Note: This product has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This product generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this product does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. Please take attention that changes or modification not expressly approved by the party responsible for compliance could void the users authority to operate the equipment. 5.2 RSS certification This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions:
(1) this device may not cause interference, and
(2) this device must accept any interference, including interference that may cause undesired operation of the device. Le prsent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radioexempts de licence. L'exploitation est autorise aux deux conditions 6 suivantes :
(1) l'appareil ne doit pas produire de brouillage, et
(2) l'utilisateur de l'appareil doit accepter tout brouillage radiolectrique subi, mme si le brouillage est susceptible d'en compromettre le fonctionnement. Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for successful communication. Conformment la rglementation d'Industrie Canada, le prsent metteur radio peut fonctionner avec une antenne d'un type et d'un gain maximal (ou infrieur) approuv pour l'metteur par Industrie Canada. Dans le but de rduire les risques de brouillage radiolectrique l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la puissance isotrope rayonne quivalente (p.i.r.e.) ne dpasse pas l'intensit ncessaire l'tablissement d'une communication satisfaisante. The module is limited to OEM installation ONLY The OEM integrator is responsible for ensuring that the end-user has no manual instruction to remove or install module. When the FCC identification number or ISED certification number is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following: Contains FCC ID:
N82-KOHLER036 and the information should be also contained in the devices user manual. This device complies with Industry Canadas RSS-310. Operation is subject to the condition that this device must not cause harmful interference and must accept 7 any interference, including interference that may cause undesired operation of the device. 8