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公开(公告)号：US10950113B2
公开(公告)日：2021-03-16
申请号：US16520973
申请日：2019-07-24
申请人： HOCHIKI Corporation
发明人： Tomohiko Shimadzu
IPC分类号： G08B17/10 , G08B21/12 , G01N21/01 , G01N21/53 , G08B17/107
摘要： A detection unit that detects smoke contained in a gas by radiating detection light toward a detection space for detecting smoke, and an inner labyrinth for inhibiting ambient light from entering the detection space, the inner labyrinth being provided to cover an outer edge of the detection space are included, the detection unit includes a light emitting unit that radiates the detection light and a light receiving unit that receives the detection light radiated by the light emitting unit, and at least a part of a side surface of the inner labyrinth on a side of the detection space is formed in a flat shape capable of inhibiting the detection light reflected by the inner labyrinth from entering a field of view RV of the light receiving unit in the detection space.
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公开(公告)号：US10937294B2
公开(公告)日：2021-03-02
申请号：US16454784
申请日：2019-06-27
IPC分类号： G08B17/10 , G08B17/107 , G01K15/00 , G01K13/02 , G08B17/103 , G01N21/53 , G01N21/31
摘要： A chamberless indoor air quality monitor system includes a detector body. A resistive heater is operatively connected to the detector body. An active temperature sensor operatively connected to the resistive heater and operatively connected to an outer surface of the detector body configured to take an active temperature measurement. A method for measuring temperature in a chamberless indoor air quality monitor system includes generating an active temperature measurement with an active temperature sensor operatively connected to an outer surface of the detector body. The method includes heating the active temperature sensor with a resistive heater operatively connected to the detector body. The method includes comparing the active temperature measurements to one another to generate a corrected active temperature measurement based on a temperature difference over time between one or more of the active temperature measurements.
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公开(公告)号：US20210056824A1
公开(公告)日：2021-02-25
申请号：US16978386
申请日：2018-03-07
申请人： NEC CORPORATION
发明人： Takeshi AKAGAWA
IPC分类号： G08B17/107 , G01N21/53 , G01N21/59
摘要： To provide a fire sensing system, fire sensing method, and program with which it is possible to identify the position of a fire using a low number of sensors. A fire sensing system 1 provided with: gas sensors 11a, 11b, 11c for sensing a change in gas concentration at three locations P1, P2, P3; a gas propagation speed calculation unit 12 for sensing gas concentration increase times T1, T2, T3 at the three locations P1, P2, P3 and calculating the gas propagation speeds v1, v2, v3 at the three locations P1, P2, P3; and a fire information estimation unit 13 for estimating the position of the fire on the basis of the gas concentration increase times T1, T2, T3 and the gas propagation speeds v1, v2, v3.
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公开(公告)号：US20210041350A1
公开(公告)日：2021-02-11
申请号：US17078154
申请日：2020-10-23
申请人： HOCHIKI Corporation
发明人： Hideki Takano , Yasuharu Fujiwara , Isao Saeki
摘要： A fire detection apparatus 1A includes a detector cover 70A for inhibiting ambient light from entering a detection space 60A, an inner cover 30A that accommodates the detection space 60A and the detector cover 70A, an outer cover 20A that accommodates the inner cover 30A, a first opening 30aA provided in a side portion on an opposite side from a side portion on an installation surface side among side portions of the inner cover 30A, a second opening provided in a side portion on an opposite side from a side portion on an installation surface among side portions of the detector cover 70A, and a flat plate-shaped insect screen 50A provided on the detector cover 70A and configured to substantially cover the entire second opening.
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公开(公告)号：US10890526B2
公开(公告)日：2021-01-12
申请号：US15794495
申请日：2017-10-26
申请人： In-Situ, Inc.
摘要： Provided is a cleanable conductivity sensor and related methods having a distal sensing end in which active sensing elements are positioned and an outer fin specially configured to minimize unwanted interference without impacting the ability for automated cleaning of the distal sensing end. A rotatable wiper or brush may be periodically rotated over the distal sensing end, thereby removing unwanted biological build-up and avoiding fouling, thereby increasing the sensor deployment time without active intervention and maintenance.
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公开(公告)号：US10890516B2
公开(公告)日：2021-01-12
申请号：US16143438
申请日：2018-09-26
摘要： Embodiments relate generally to systems and methods for detecting particulate matter in the air. A particulate matter sensor may comprise an airflow channel; a light source configured to pass light through the airflow channel; an airflow generator configured to generate airflow into the airflow channel; a waveguide configured to direct light from the light source after it passes through the airflow channel and scatters off of particulate matter within the airflow channel; a photodiode configured to receive light scattered by the waveguide; and a computing device coupled to the photodiode having a processor and a memory storing instructions which, when executed by the processor, determines a mass concentration of particles in the airflow channel based on an output of the photodiode.
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公开(公告)号：US20200333243A1
公开(公告)日：2020-10-22
申请号：US16755507
申请日：2018-09-03
IPC分类号： G01N21/3504 , G01N21/53 , G01N21/85
摘要： The invention relates to an apparatus (11) for analysing an exhaust gas of a vehicle, comprising a sample chamber (29) for receiving the exhaust gas, a heating device (24) for heating the exhaust gas provided to the sample chamber (29), and an infrared analysis device (23) having an infrared transmitter and an infrared receiver. The infrared transmitter is operable to transmit an infrared beam into the exhaust gas in the sample chamber (29), and the infrared receiver is operable to receive scattered infrared light from the exhaust gas in the sample chamber (29). The infrared analysis device (23) is operable to receive a signal from the infrared receiver and to compare it with a threshold level. A pass indication is issued if the exhaust gas is below the threshold level and a fail indication is issued if the exhaust gas is above the threshold level. The threshold level may correspond to a change in signal level equivalent to a predetermined density of particulates in the exhaust gas. The infrared receiver may be configured to generate the signal based on infrared light scattered from particles having a particle size preferably in the range 0.3 μm to 10 μm. Processing circuitry is preferably configured to operate the apparatus in a warm-up mode during a first period, during which the heater device (24) is activated. A fan (22), upstream of the sample chamber (29) and for delivering exhaust gas thereto, may be operated at one of a plurality of selectable fan speeds, the fan (22) being successively switched to higher ones of the selectable fan speeds. A method of analysing an exhaust gas is also disclosed.
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公开(公告)号：US20200292451A1
公开(公告)日：2020-09-17
申请号：US16889170
申请日：2020-06-01
发明人： Jason Barnes , Dane Mealey , Jeffrey King
摘要： Systems and methods for increasing the accuracy of a turbidity sensor are disclosed. The systems include a turbidity sensor and a flow module with a specialized flow path, with the turbidity sensor engaging with the flow module such that a measurement zone of the turbidity sensor is disposed within a flow path of the flow module and a bypass path of the flow module does not pass through the measurement zone. The methods include flowing a fluid containing bubbles into a system that separates the fluid in the flow module into a first stream of fluid containing relatively more bubbles and a second stream of fluid containing relatively fewer bubbles, the first stream flowing through a bypass path that does not pass through the measurement zone, and the second stream flowing through the measurement zone of the turbidity sensor.
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公开(公告)号：US10776643B1
公开(公告)日：2020-09-15
申请号：US16553349
申请日：2019-08-28
申请人： Robert Bosch GmbH
摘要： A vehicular airborne particulate detection system in one embodiment includes a particulate matter concentration sensor positioned in a passenger space of a vehicle. The particulate matter concentration sensor generates a signal associated with an airborne particulate matter concentration in the passenger space which is analyzed by a controller to identify a cyclical particulate matter concentration pattern which is classified as a smoking event. The controller then generates an output using a user interface based upon the classified smoking event.
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公开(公告)号：US20200278293A1
公开(公告)日：2020-09-03
申请号：US16089841
申请日：2017-03-24
申请人： KEMIRA OYJ
发明人： Lari VÄHÄSALO , Marjatta PIIRONEN , Iiris JOENSUU
摘要： In a starch concentration measurement, a liquid sample is conducted from a liquid sample such as pulp suspension or filtrate of a paper, board or tissue process. An iodine solution is added to the sample, and a light absorbance or transmittance of the sample is measured at a wavelength longer than about 650 nm, for example longer than about 700 nm. The measured absorbance or transmittance of the sample is converted into the starch concentration of the sample by a predefined correlation between a starch concentration and a light absorbance or transmittance.
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