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1. 发明专利

AU734148B2 Fire alarm 未知
公开(公告)号：AU734148B2
公开(公告)日：2001-06-07
申请号：AU7395198
申请日：1998-07-01
申请人： ISHII HIROMITSU , HOCHIKI CO
发明人： ISHII HIROMITSU
IPC分类号： G08B17/00 , G08B17/10

2. 发明专利

DE4222920A1 未知
公开(公告)号：DE4222920A1
公开(公告)日：1993-01-14
申请号：DE4222920
申请日：1992-07-11
申请人： HOCHIKI CO , ISHII HIROMITSU
发明人： ISHII HIROMITSU , ONO TAKASHI , WATANABE KIYOSHI
IPC分类号： G06K9/00 , G08B13/196 , G08B17/12
摘要： By using the ratio of the G component to the R component G/R, or the ratio of the B component to the R component B/R, from a television monitor image, and referring to a conversion table for converting to distribution temperature, a surface temperature of a flame is found for each pixel. An area in which luminance signals included in an image of a surveillance area exceed a prescribed level is sampled as a flame outline, and at least the distribution temperature of a sampled flame region is detected, and distance to a radiant energy source is measured. The amount of radiant energy from the radiant energy source is estimated by computation, based on the sampled flame area and its distribution temperature and the distance to the source of radiant energy. The system is provided with a fire image recognition section for recognizing a fire from radiant energy itself and from change in radiant energy over time and outputting fire detection information and an intruder entity recognition section which, from monitor images from the same camera, recognizes an intruder entity and outputs burglary detection information. Processing modes are provided enabling fire and/or intruder entity image processing to be selected. If abnormality detection information is received using fire image or intruder entity recognition processing, a pre-alarm is outputted in the central monitor room, and also the monitor image in the central monitor room is switched to the image of the location where the abnormality has been detected.

3. 发明专利

AU3053095A Fire alarm 未知
公开(公告)号：AU3053095A
公开(公告)日：1995-11-09
申请号：AU3053095
申请日：1995-09-08
申请人： HOCHIKI CO , ISHII HIROMITSU
发明人： NAME NOT GIVEN
IPC分类号： A62C37/36 , G08B17/00 , G08B17/10 , G08B17/117 , G08B17/12 , G08B31/00
摘要： A fire alarm provided with a sensor set in a fire monitoring section and adapted to detect the variations of physical phenomena accompanying a fire, such as the variations of temperature, densities of smoke and CO gas, a means for calculating primary fire source information including the quantities of generated heat, smoke and gases on the basis of the information detected by the sensor, and a fire judgement means for judging the occurrence of a fire on the basis of the quantity of variations of the fire source information, which are determined by the fire source information calculating means, and the correction between the information, and giving an alarm.

4. 发明专利

FI103368B1 未知
公开(公告)号：FI103368B1
公开(公告)日：1999-06-15
申请号：FI904612
申请日：1990-09-19
申请人： HOCHIKI CO , ISHII HIROMITSU
发明人： ISHII HIROMITSU , ONO TAKASHI
IPC分类号： A62C37/36 , G08B17/00 , G08B17/10 , G08B17/117 , G08B17/12

5. 发明专利

AU7395198A Fire alarm 未知
公开(公告)号：AU7395198A
公开(公告)日：1998-09-03
申请号：AU7395198
申请日：1998-07-01
申请人： HOCHIKI CO , ISHII HIROMITSU
IPC分类号： G08B17/00 , G08B17/10

6. 发明专利

CH688756A5 Détecteur d'incendie analogique. 未知
公开(公告)号：CH688756A5
公开(公告)日：1998-02-27
申请号：CH194493
申请日：1993-06-29
申请人： HOCHIKI CO , ISHII HIROMITSU
发明人： HIROMITSU ISHII , YASUO TORIKOSHI
IPC分类号： G01K7/25 , G08B17/06

7. 发明专利

GB9312685D0 THERMAL ANALOG FIRE DETECTOR 未知
公开(公告)号：GB9312685D0
公开(公告)日：1993-08-04
申请号：GB9312685
申请日：1993-06-18
申请人： HOCHIKI CO , ISHII HIROMITSU
IPC分类号： G01K7/25 , G08B17/06
摘要： A thermal analog fire detector which is excellent in measurement precision and resolution in both the high and low temperature ranges and which has a wide range of measuring temperatures. A constant voltage E from a constant voltage circuit is supplied to a CPU, an A/D converter and a constant current circuit. The constant current circuit is connected in series to a thermistor. The constant current circuit is constructed to supply a constant current, the value of which being variable in a plurality of stages, to the thermistor controlled by the CPU. The CPU switches the constant current of the constant current circuit according to the measured temperature data. A voltage V across the thermistor is converted into digital data by the A/D converter, and then the converted data is supplied to the CPU.

8. 发明专利

GB2257598A VIDEO CAMERA SURVEILLANCE SYSTEM DETECTS INTRUDERS AND/OR FIRE 未知
公开(公告)号：GB2257598A
公开(公告)日：1993-01-13
申请号：GB9214656
申请日：1992-07-10
申请人： HOCHIKI CO , ISHII HIROMITSU
发明人： ISHII HIROMITSU , ONO TAKASHI , WATANABE KIYOSHI
IPC分类号： G06K9/00 , G08B13/196 , G08B17/12
摘要： A plurality of colour video cameras 10 provides video signals which are switched 18, under the control of computer 32 to signal processor 100 having a frame memory 22 and means for recognizing the presence of an intruder 28 or a fire 26 respectively; mode switch allows for the stored video signals to be subject to either fire or intruder detection or both. If an abnormality is detected in the output of one video camera, the video signal of that camera is routed to monitor 42 for display. Fire is detected (fig 2) by comparing the radiant energy, calculated from the temperature (ratio G:R or B:R), the flame outline (using a luminance threshold) and flame distance (using the output of the camera autofocus), with a threshold and observing changes with time in it.

9. 发明专利

FI103368B Paloilmoitin 未知
公开(公告)号：FI103368B
公开(公告)日：1999-06-15
申请号：FI904612
申请日：1990-09-19
申请人： HOCHIKI CO , ISHII HIROMITSU
发明人： ISHII HIROMITSU , ONO TAKASHI
IPC分类号： A62C37/36 , G08B17/00 , G08B17/10 , G08B17/117 , G08B17/12

10. 发明专利

AT401585B 未知
公开(公告)号：AT401585B
公开(公告)日：1996-10-25
申请号：AT900290
申请日：1990-01-19
申请人： HOCHIKI CO , ISHII HIROMITSU
IPC分类号： A62C37/36 , G08B17/00 , G08B17/10 , G08B17/117 , G08B17/12

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