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1. (WO2018163638) SPEED MEASUREMENT DEVICE AND SPEED MEASUREMENT METHOD
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Pub. No.: WO/2018/163638 International Application No.: PCT/JP2018/002203
Publication Date: 13.09.2018 International Filing Date: 25.01.2018
IPC:
G01S 13/60 (2006.01) ,G01S 15/60 (2006.01)
G PHYSICS
01
MEASURING; TESTING
S
RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
13
Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
02
Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
50
Systems of measurement based on relative movement of target
58
Velocity or trajectory determination systems; Sense-of-movement determination systems
60
wherein the transmitter and receiver are mounted on the moving object, e.g. for determining ground speed, drift angle, ground track
G PHYSICS
01
MEASURING; TESTING
S
RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
15
Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
02
using reflection of acoustic waves
50
Systems of measurement based on relative movement of target
58
Velocity or trajectory determination systems; Sense-of-movement determination systems
60
wherein the transmitter and receiver are mounted on the moving object, e.g. for determining ground speed, drift angle, ground track
Applicants:
日立オートモティブシステムズ株式会社 HITACHI AUTOMOTIVE SYSTEMS, LTD. [JP/JP]; 茨城県ひたちなか市高場2520番地 2520, Takaba, Hitachinaka-shi, Ibaraki 3128503, JP
Inventors:
松村 隆史 MATSUMURA Takafumi; JP
佐藤 正幸 SATOU Masayuki; JP
Agent:
戸田 裕二 TODA Yuji; JP
Priority Data:
2017-04472109.03.2017JP
Title (EN) SPEED MEASUREMENT DEVICE AND SPEED MEASUREMENT METHOD
(FR) DISPOSITIF DE MESURE DE VITESSE ET PROCÉDÉ DE MESURE DE VITESSE
(JA) 速度計測装置及び速度計測方法
Abstract:
(EN) Proposed are a speed measurement device and speed measurement method capable of calculating speed even when the intensity of reflected waves is weak in relation to radiation waves that have been radiated by a radar module. This speed measurement device 10 is installed in a vehicle 1, generates radiation waves and radiates the same toward the ground G, receives reflected waves that are the radiation waves having been reflected from the ground G, and generates a frequency difference signal for the radiated radiation waves and received reflected waves. If the intensity of the generated frequency difference signal is greater than or equal to a prescribed value (amplitude threshold), the speed measurement device 10 calculates a measurement speed on the basis of the frequency difference signal. The speed measurement device 10 also changes the threshold value used at the time of the next measurement on the basis of a system state (for example, the measurement speed for the vehicle 1).
(FR) La présente invention concerne un dispositif de mesure de vitesse et un procédé de mesure de vitesse aptes à calculer la vitesse même lorsque l’intensité des ondes réfléchies est faible par rapport à des ondes de rayonnement qui rayonnent depuis un module radar. Ledit dispositif de mesure de vitesse (10) est installé dans un véhicule (1), génère des ondes de rayonnement et les fait rayonner depuis le sol (G), reçoit les ondes réfléchies qui sont les ondes de rayonnement qui ont été réfléchies depuis le sol (G), et génère un signal de différence de fréquence pour les ondes de rayonnement rayonnées et les ondes réfléchies reçues. Si l’intensité du signal de différence de fréquence généré est supérieure ou égale à une valeur prescrite (seuil d’amplitude), le dispositif de mesure de vitesse (10) calcule une vitesse de mesure sur la base du signal de différence de fréquence. Le dispositif de mesure de vitesse (10) change également la valeur seuil utilisée au moment de la mesure suivante sur la base d’un état du système (par exemple, la vitesse de mesure du véhicule (1)).
(JA) レーダモジュールから放射された放射波に対する反射波の強度が弱い場合でも速度を算出することができる速度計測装置及び速度計測方法を提案する。 車両1に搭載された速度計測装置10は、放射波を生成して地面Gに放射し、放射波の地面Gからの反射波を受信し、放射した放射波と受信した反射波との周波数差信号を生成する。そして、生成した周波数差信号の強度が所定値(振幅閾値)以上である場合に当該周波数差信号に基づいて計測速度を算出する。さらに、速度計測装置10では、システムの状態(例えば車両1の計測速度)に基づいて、次回の計測時で用いられる振幅閾値を変更する。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)