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    • 1. 发明专利
    • DE60304285T2
    • 2006-12-28
    • DE60304285
    • 2003-01-08
    • HOCHIKI CO
    • MATSUKUMA HIDENARIDOHI MANABUHONMA HIROSHISHIMA HIROSHI
    • G08B17/107
    • A light scattering type smoke sensor comprising a holder (5) with openings (9, 10) embedded with light emitting part (6) and light detecting part (7) respectively, which do not protrude into the smoke detection chamber (4). The optical axis (14) of light emitting part (6) intersects at a predetermined first angle alpha in the horizontal direction with the optical axis (15) of the light detecting part (7) at a predetermined second angle beta in the vertical direction. The optical axis (14) of the light emitting part (6) and optical axis (15) of the light detecting part (7) further comprise a configuration angle delta in the range of 90 SIMILAR 120 degrees used as the supplementary angle for the scattering angle &thetas;. Accordingly, the smoke detection part is further constituted in a thin-shaped light scattering smoke sensor which enables the setup of a scattering angle with no directivity in the smoke influx to the smoke detection chamber (4).
    • 3. 发明专利
    • Fire alarm system and testing method therefor
    • AU2015398910B2
    • 2018-10-04
    • AU2015398910
    • 2015-06-18
    • HOCHIKI CO
    • BROWN DAVIDDOHI MANABUKOYAMA KIYOAKITATSUNO HIROYUKIKASE HIROYUKI
    • G08B17/00
    • [Problem] To enable an inspector, who is testing a fire sensor by using a testing tool, to grasp, easily and with certainty, test alarms triggered by detection of heat, smoke and gas by means of an alarm indication lamp without the inspector checking an alarm indication on the fire receiver side. [Solution] A composite fire sensor 12, which detects heat temperature, smoke concentration and gas concentration due to a fire, is connected to a transmission path 16, which extends from a fire receiver 10. A test mode is set in the fire sensor 12 when a fire test operation is detected by the fire receiver 10. The fire sensor 12 controls an alarm indication lamp 30 to present different indications in accordance with respective alarm tests when such alarm tests are performed by detecting heat temperature, detecting smoke concentration, and detecting gas concentration using a test tool 84 in a state where the test mode has been set. For example, the fire sensor 12 makes the alarm indication lamp 30 repeatedly flash once in heat detection, flash two times in smoke detection and flash three times in gas detection with a prescribed rest period between the flashes.
    • 4. 发明专利
    • Smoke sensor
    • AU2009352856A1
    • 2012-03-15
    • AU2009352856
    • 2009-09-15
    • HOCHIKI CO
    • DOHI MANABU
    • G01N21/53
    • Disclosed are a smoke sensing system, a smoke sensor and a receiver, which can discriminate the kind of smoke precisely. The smoke sensor comprises: a projector unit (13) for projecting a projection light to a monitored region; a first receiving unit (14a), a second receiving unit (14b) and a third receiving unit (14c) for receiving the detected lights which have been scattered by particles existing in the monitored region, the first receiving unit (14a), the second receiving unit (14b) and the third receiving unit (14c) being arranged such that the angles between the receiving axes of the first receiving unit (14a), the second receiving unit (14b) and the third receiving unit (14c) and the projecting axis of the projector unit (13) are different from one another; a smoke kind determining unit (47) for determining the kind of the smoke having generated in the monitored region, on the basis of the output values from the first receiving unit (14a), the second receiving unit (14b) and the third receiving unit (14c); and a fire determining unit (48) for determining whether or not a fire has occurred in the monitored region, on the basis of the output values from the first receiving unit (14a), the second receiving unit (14b) and the third receiving unit (14c).
    • 8. 发明专利
    • Fire alarm system and testing method therefor
    • AU2015398910A1
    • 2017-10-26
    • AU2015398910
    • 2015-06-18
    • HOCHIKI CO
    • KASE HIROYUKIBROWN DAVIDDOHI MANABUKOYAMA KIYOAKITATSUNO HIROYUKI
    • G08B17/00
    • [Problem] To enable an inspector, who is testing a fire sensor by using a testing tool, to grasp, easily and with certainty, test alarms triggered by detection of heat, smoke and gas by means of an alarm indication lamp without the inspector checking an alarm indication on the fire receiver side. [Solution] A composite fire sensor 12, which detects heat temperature, smoke concentration and gas concentration due to a fire, is connected to a transmission path 16, which extends from a fire receiver 10. A test mode is set in the fire sensor 12 when a fire test operation is detected by the fire receiver 10. The fire sensor 12 controls an alarm indication lamp 30 to present different indications in accordance with respective alarm tests when such alarm tests are performed by detecting heat temperature, detecting smoke concentration, and detecting gas concentration using a test tool 84 in a state where the test mode has been set. For example, the fire sensor 12 makes the alarm indication lamp 30 repeatedly flash once in heat detection, flash two times in smoke detection and flash three times in gas detection with a prescribed rest period between the flashes.