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1. 发明专利

JPS601573B2 失效
公开(公告)号：JPS601573B2
公开(公告)日：1985-01-16
申请号：JP9081879
申请日：1979-07-16
申请人： TATEISHI DENKI KK , REO GIKEN KK
发明人： KOTAKE TAKATERU , FUKAMIZU HIROSHI , NAKANO MASASHI , MATSUOKA SEIYA , HIRAO IICHI , IBA KUNIO , YAMAZAKI TARO
IPC分类号： G01N21/35 , G01N21/17 , G01N21/47 , G01W1/14 , G08B19/02 , G08G1/00 , G08G1/09 , G09F7/00

2. 发明专利

JPS601574B2 失效
公开(公告)号：JPS601574B2
公开(公告)日：1985-01-16
申请号：JP12488179
申请日：1979-09-27
申请人： TATEISHI DENKI KK , REO GIKEN KK
发明人： FUKAMIZU HIROSHI , KOTAKE TAKATERU , MATSUOKA SEIYA , NAKANO MASASHI , HIRAO IICHI , YAMAZAKI TARO , IBA KUNIO
IPC分类号： G01N21/35 , G01N21/17 , G01N21/47 , G01W1/14 , G08B19/02 , G08G1/09 , G09F7/00

3. 发明专利

JPS617575B2 JPS617575B2 - 失效
公开(公告)号：JPS617575B2
公开(公告)日：1986-03-07
申请号：JP8042980
申请日：1980-06-13
申请人： Tateishi Denki Kk , Reo Giken Kk
发明人： NAKANO MASASHI , FUKAMIZU HIROSHI , YAMAZAKI TARO , IBA KUNIO
IPC分类号： G01N21/27 , E01H10/00 , G01N21/17 , G01N21/35 , G01N21/47 , G01W1/00
CPC分类号： G01W1/00

4. 发明专利

JPS6015015B2 失效
公开(公告)号：JPS6015015B2
公开(公告)日：1985-04-17
申请号：JP8311279
申请日：1979-06-29
申请人： REO GIKEN KK , TATEISHI DENKI KK
发明人： IBA KUNIO , YAMAZAKI TARO , SANO KENJI , FUKAMIZU HIROSHI , NAKANO MASASHI
IPC分类号： G01N21/27 , G01N21/17 , G01N21/35 , G01W1/14 , G08B19/02 , G08G1/09 , G09F7/00

5. 发明专利

JPS5614139A DETECTING METHOD FOR ROADDSURFACE CONDITION 失效
公开(公告)号：JPS5614139A
公开(公告)日：1981-02-10
申请号：JP9081779
申请日：1979-07-16
申请人： OMRON TATEISI ELECTRONICS CO , REO GIKEN KK
发明人： KOTAKE TAKAAKI , FUKAMIZU HIROSHI , NAKANO MASASHI , HIRAO IICHI , IBA KUNIO , YAMAZAKI TAROU
IPC分类号： G01N21/47 , G01N21/17 , G08B19/02 , G08G1/00
摘要： PURPOSE:To obtain a road-surface-condition detecting method that can easily be installed and provides detection over a relatively-broad range, by deciding the state of a road surface on the basis of difference in direct reflection factor and diffused reflection factor of light on the road surface according to the state of the road surface and a road-surface temperature. CONSTITUTION:Of light projected from projector 1 and then reflected on road surface 4, light of direct reflection and that of diffused reflection are photodetected by photodetector 11 for direct reflection and photodetector 21 for diffused reflection respectively. Output signals of filters 14 and 24, containing information on the state of the road surface obtained from the light of direct reflection and that of diffused reflection, are input to comparators 15 and 16, and 25 and 26 respectively, thereby deciding one of the wet state, snow state and dry state. Further, microprocessor 40 classifies finally the state of the road by four kinds of dry, wet, frozen and snow states on the basis of the decision result of the road-surface state by the information from the light of direct reflection and that of diffused reflection, and a temperature detection signal from radiation thermometer 31. Thus, the state of the road surface can accurately be detected over a broad range.

6. 发明专利

JPS567041A ROADDSURFACE MOISTURE SENSOR 失效
公开(公告)号：JPS567041A
公开(公告)日：1981-01-24
申请号：JP8311279
申请日：1979-06-29
申请人： OMRON TATEISI ELECTRONICS CO , REO GIKEN KK
发明人： IBA KUNIO , YAMAZAKI TAROU , SANO KENJI , FUKAMIZU HIROSHI , NAKANO MASASHI
IPC分类号： G01N21/27 , G01N21/17 , G01N21/35 , G01W1/14 , G08B19/02 , G08G1/09 , G09F7/00
摘要： PURPOSE:To accurately detect moisture on a road surface by judging the humidness of the road surface, utilizing the absorption of infrared rays by moisture. CONSTITUTION:Light is applied to a road surface through a flood light projector 12, and the rays diffusedly reflected by the road surface are received by a photoactive means 13. The visible-ray components of below 1.2mum in wavelength of the light received are reflected by a silicon plate 1, and received by a silicon photocell 17. The other components, that is, infrared rays of above 1.2mum in wavelength are received by a photoconductive cell 15. The detection output from the cell 17 is processed in comparators 22 and 23 through a BEP19, LPF21, and the like, and when the detection output is above a setting value V1 and below a setting value V2, that is V1-V2, a level output corresponding to the road surface condition is generated from terminals A, B, and C. On the other hand, the detection output from the cell 15 is processed in a comparator 34, and a high level judgment output corresponding to the humidness is generated from terminals D and E according to the absorption of infrared rays by moisture. Thus, logically processing the outputs from the terminals A-E permits snow, dry, water, or wet conditions on the road surface to be accurately sensed even when the snow is contaminated.

7. 发明专利

JPS576339A DISCRIMINATING DEVICE FOR STATE OF ROAD SURFACE 失效
公开(公告)号：JPS576339A
公开(公告)日：1982-01-13
申请号：JP8042980
申请日：1980-06-13
申请人： OMRON TATEISI ELECTRONICS CO , REO GIKEN KK
发明人： NAKANO MASASHI , FUKAMIZU HIROSHI , YAMAZAKI TAROU , IBA KUNIO
IPC分类号： G01N21/27 , E01H10/00 , G01N21/17 , G01N21/35 , G01N21/47 , G01W1/00
摘要： PURPOSE:To accurately know the dry, wet, snow cover and frozen states of road surfaces by discriminating the states of the road surface based on the photodetection signals of the specular and irregular reflected light of visible light from the surface and the irregular reflected light of infrared light. CONSTITUTION:A light projector 24 of a mercury arc lamp contg. not only visible light but also near infrared light in emission spectral, an irregular reflected light detector 25 including photodetectors 31, 32 for infrared light and visible light, a specular reflected light detector 26 including a photodetector 33 for visible light, and a thermometer 28 are mounted to a stanchion erected on one side of a road. The outputs from the photodetectors 25, 26 are removed of noise components by passing through a band-pass filter 35, after which they are rectified and are sent to comparators 41, 42, 43. The reference levels corresponding to the dry, wet and snow cover states of road surfaces have beforehand been set in these comparators, and the signals from the photodetectors are compared with these reference levels. The compared output signals thereof are sent to a logical circuit 44, and an arithmetic processing part 45, by which the above-mentioned states of the road surface are decided. The freezing state of the road surface is decided by the signal of the thermometer 28.

8. 发明专利

JPS5614140A DETECTING METHOD FOR ROADDSURFACE CONDITION 失效
公开(公告)号：JPS5614140A
公开(公告)日：1981-02-10
申请号：JP9081879
申请日：1979-07-16
申请人： OMRON TATEISI ELECTRONICS CO , REO GIKEN KK
发明人： KOTAKE TAKAAKI , FUKAMIZU HIROSHI , NAKANO MASASHI , MATSUOKA SEIYA , HIRAO IICHI , IBA KUNIO , YAMAZAKI TAROU
IPC分类号： G01N21/35 , G01N21/17 , G01N21/47 , G01W1/14 , G08B19/02 , G08G1/00 , G08G1/09 , G09F7/00
摘要： PURPOSE:To obtain a detecting method that can easily be equipped and detect a road-surface state, especially a snow state with accuracy, by deciding the state of the road surface on the basis of difference in direct reflection factor and diffused reflection factor of infrared rays on the road surface according to the road-surface state and a road-surface temperature. CONSTITUTION:Of light projected from projector 1 and reflected on road surface 4, light of direct reflection and that of diffused reflection are photodetected by photodetectors 11 and 12 for direct reflection and diffused reflection respectively and then converted into electric signals. By making use of characteristics that the reflection factor of the surface of snow decreases according to a shift from the visual light range to the infrared-ray range, filters 14 and 24 supply comparators 15, 16 and 25 with output signals containing information regarding the state of the road surface. On the basis of the decision result of the road-surface state from comparators and a temperature detection signal from radiation thermometer 31, microprocessor 40 makes the final decision to classify the road-surface state by four kinds of dry, wet, frozen and snow states. Thus, the road-surface state, especially the snow state can be detected with accuracy.

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