Tire Pressure Monitoring Sensor Model: TIS-10DH ASK/FSK 315 MHz 1 of 7 1. SYSTEM OVERVIEW The tire pressure monitoring sensor (referred as TPMS Tire Pressure Monitoring Sensor) consists of the following units:
- Tire guard tire unit type TIS-10DH which includes an integrated pressure, temperature and acceleration sensor and a RF transmitter.
- LF unit which includes a LF receiver (not described in this document) The TPMS monitors a vehicle's tire pressure whilst driving or stationary. An electronic unit (wheel unit) inside each tire, mounted to the valve stem, periodically measures the actual tire pressure. By means of RF communication, this pressure information is transmitted to the RF receiver. 2. TECHNICAL DESCRIPTION Carrier frequency:
Number of channels:
Type of modulation:
Baud rate:
Rated Output Power:
Antenna:
Voltage supply range:
Temperature range 315 MHz 1 Amplitude Shift Keying (ASK), Frequency Shift Keying (FSK) 9600bps
< 10mW Internal 2.1 up to 3.2V
-40, +120C 3. TYPICAL USAGE PATTERN 3.1 AVERAGE FACTOR CALCULATION (Standard 47 CFR Part 15C (periodic intentional transmitter)) Maximum transmitting duration in whatever 100ms windows: 10.31ms
Averaging factor = 20xlog(10.31/100)=-19.73dB ToleranceBaudrate 1%:=
+
2bit 12byte
:=
9600bps
:=
:=
98=
Baudrate Framebyte Framebits
:=
tbit Framebits Framebyte 1 Baudrate 1 ToleranceBaudrate
(
)
=
tbit 0.10522ms tFramebits tFramebits
:=
=
tbit Framebits 10.31145ms tFrameFSKbits
:=
tFramebits 1 due to FSK 100%
AveragingFactor_tFrame
:=
20log tFrameFSKbits 100ms Averaging Factor_tFrame = -19.8dB 2 of 7
-
ASK WUP: 320 bits Baudrate= 9600bps/s (+/-1%) ASK: 50% duty cycle Max WUP duration = 16.83ms AveragingFactor_tWUP
:=
20log tWUPFrameASKbit 100ms Averaging Factor_tWUP = -15.5dB 4. BLOCK DIAGRAM The block diagram below shows the main electronic units of the wheel unit:
RF Chipset: Infineon ATIC149 SP001650684 26MHz Xtal (Quartz): NDK2016A or KSS CX2016DB 3 of 7 5. PICTURE 4 of 7 6. LABEL 6.1USA Continental TIS-10DH FCC ID: KR5TIS-10DH 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. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 5 of 7 6.2 CANADA Continental Model: TIS-10DH IC: 7812D-TIS10DH Canada, Innovation, Science and Economic Development Canada (ISED) Notices This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canadas licence-exempt RSS(s). Operation is subject to the following two conditions:
(1) This device may not cause interference.
(2) This device must accept any interference, including interference that may cause undesired operation of the device. Avis du Canada, Innovation, Sciences et Dveloppement conomique Canada (ISED) Lmetteur/rcepteur exempt de licence contenu dans le prsent appareil est conforme aux CNR dInnovation, Sciences et Dveloppement conomique Canada applicables aux appareils radio exempts de licence. Lexploitation est autorise aux deux conditions suivantes :
(1) Lappareil ne doit pas produire de brouillage;
(2) Lappareil doit accepter tout brouillage radiolectrique subi, mme si le brouillage est susceptible den compromettre le fonctionnement. CAUTION:
Any changes or modifications not expressly approved by the grantee of this device could void the user's authority to operate the equipment. 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. 6 of 7