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公开(公告)号：EP4287780A1
公开(公告)日：2023-12-06
申请号：EP23176541.3
申请日：2023-05-31
发明人： LU, Haiyong , YANG, Zhanlin
IPC分类号： H05B45/50 , H05B45/30 , H05B45/345
摘要： The present application relates to power supply technology, and in particular to a drive circuit for driving a light-emitting diode and a smoke detection device comprising the drive circuit. The drive circuit according to the present application comprises: a constant-current drive module; a light-emitting diode, a positive electrode of which is coupled with a DC power supply, the DC power supply having an output voltage greater than a maximum allowable operating voltage of the constant-current drive module; and a transistor comprising a control terminal, a first terminal coupled with a negative electrode of the light-emitting diode, and a second terminal coupled with the constant-current drive module, wherein a voltage signal having a set amplitude is applied onto the control terminal such that the transistor operates in a cut-off region when a voltage at the second terminal is close to the set amplitude.
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公开(公告)号：EP4270350A1
公开(公告)日：2023-11-01
申请号：EP23170472.7
申请日：2023-04-27
发明人： YANG, Maoqing , ZHANG, Jialin , WANG, Dachuan
IPC分类号： G08B29/14 , G08B17/103 , G02B5/20
摘要： The present application provides an optical filter (3), and a test assembly and method for a smoke detector. The optical filter (3) comprises: a support (30); and a screen (31) supported by the support (30), wherein the screen (31) is composed of wires (32) and mesh holes (33) are defined between the wires (32), and the screen (31) has a first side and a second side opposite to each other; wherein, the smoke detector comprises a light transmitter (21) and a light receiver (22) arranged in vicinity and an light reflector (4) arranged opposite to the light transmitter (21) and the light receiver (22), such that light emitted by the light transmitter (21) is reflected to the light receiver (22) via the light reflector (4); and wherein, during testing, the optical filter (3) is arranged in both the light path (51) from the light transmitter (21) to the light reflector (4) and the light path (52) from the light reflector (4) to the light receiver (22), where at least the side of the wires (32) of the screen (31) facing the light transmitter (21) of the smoke detector is convex so as to attenuate or eliminate the light directly reflected back to the light receiver (22) by the optical filter (3). The device and method according to the embodiments of the present invention can accurately test a smoke detector.
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公开(公告)号：EP3151209A1
公开(公告)日：2017-04-05
申请号：EP16190398.4
申请日：2016-09-23
发明人： Gao, Zhihua , Bian, Yanhua , Liu, Xuemin
IPC分类号： G08B25/12
摘要： The present utility model provides a fire alarm device, which includes: a base portion; a press portion which is capable of moving relative to the base portion to deviate away from the base portion or close to the base portion; an alarm switch which is capable of moving relative to an alarm circuit, to control turn-on and turn-off of the alarm circuit; and a plurality of buttons which are mounted on the base portion and capable of converting movement of the press portion to movement of the alarm switch; wherein the device has an alarm enable position, wherein, at this point, the press portion deviates close to the base portion, to press the plurality of buttons and indirectly press the alarm switch to turn on the alarm circuit; and an alarm disable position, wherein, at this point, the press portion deviates away from the base portion, to release the plurality of buttons and indirectly release the alarm switch to turn off the alarm circuit. The fire alarm device of the present utility model has higher reliability and environment adaptability.
摘要翻译： 本实用新型提供一种火灾报警装置，包括：基座部分; 能够相对于基部移动以偏离基部或靠近基部的按压部; 能够相对于报警电路移动的报警开关，用于控制报警电路的接通和断开; 以及多个按钮，其安装在所述基座部分上并且能够将所述按压部分的移动转换成所述报警开关的移动; 其中，所述装置具有报警使能位置，其中，在这一点上，所述按压部分偏离所述基部，按压所述多个按钮并间接地按下所述报警开关来打开所述报警电路; 和报警禁止位置，其中，在这一点上，按压部分偏离基部，以释放多个按钮并间接释放报警开关以关闭报警电路。 本实用新型的火灾报警装置具有较高的可靠性和环境适应性。
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公开(公告)号：EP3159863A1
公开(公告)日：2017-04-26
申请号：EP16189212.0
申请日：2016-09-16
发明人： MANES, Enrico
CPC分类号： G08B25/12 , H01H2003/0233 , H01H2003/024 , H01H2003/0246 , H05K5/0221
摘要： A manual alarm device including a housing and a displacement element mounted in the housing is provided. The displacement element activates the alarm when the element is moved from a first to a second position. The switch connected to the displaceable element comprises a body pivoting around at least one arm, the two being separated by high viscosity material configured to resist sudden movement of the displaceable element. A high force due to involuntary impact therefore does not activate the alarm.
摘要翻译： 提供了包括壳体和安装在壳体中的位移元件的手动报警装置。 当元件从第一位置移动到第二位置时，位移元件激活警报。 连接到可移位元件的开关包括围绕至少一个臂枢转的主体，两者由被配置为抵抗可移位元件的突然移动的高粘度材料隔开。 由于非自愿冲击而产生的强大力量不会激活警报。
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公开(公告)号：EP4083955A1
公开(公告)日：2022-11-02
申请号：EP22169970.5
申请日：2022-04-26
发明人： Hu, Jinli , Maoqing, Yang
摘要： The present invention provides a combustible gas sensor module (2) and a combustible gas sensing device. The combustible gas sensor module (2) comprises: an enclosure (20) comprising a first end (21) and a second end (22) opposite to each other; a plug connector (23) disposed at the first end (21) of the enclosure (20) for connecting to a sensing device body (1) of a combustible gas sensing device; a sensor unit (25) disposed at the second end (22) of the enclosure (20) for sensing combustible gas; and a circuit board (27) disposed in the enclosure (20) and respectively connected to the plug connector (23) and the sensor unit (25), with a microcontroller provided thereon. The combustible gas sensor module (2) according to the embodiments of the present invention can be easily replaced.
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