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公开(公告)号：US20180178613A1
公开(公告)日：2018-06-28
申请号：US15844644
申请日：2017-12-18
申请人： Broadsens Corp.
发明人： Chang Zhang , Lei Liu
CPC分类号： B60H1/008 , B60H1/00371 , B60H1/00507 , B60H1/00985 , B60H3/0007 , B60H3/0085 , B60H3/06 , G08B21/12 , G08B25/01
摘要： The present invention discloses an air quality monitoring device that can measure the hazardous gas contents, including benzene, formaldehyde and VOCs, and other air quality measurements inside train cars in real time. The air quality monitoring device can be installed inside a train car, either in the middle of the car, or at the end, or other locations. Each air quality device is equipped with a unique ID (e.g., MAC address, IP address, and RFID), which can be associated with a car or location inside the train. When hazardous gas level in a train car exceeds the safety level, this car or location can be identified and an air quality control unit injects or sprays photocatalyst material to the air to improve the air quality.
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公开(公告)号：US20180208222A1
公开(公告)日：2018-07-26
申请号：US15873820
申请日：2018-01-17
申请人： Broadsens Corp.
发明人： Chang Zhang , Lei Liu
IPC分类号： B61L15/00
CPC分类号： B61L15/0081 , B61L15/0027 , B61L15/0072 , B61L27/0094
摘要： The present invention discloses a train pantograph structural health monitoring system. The system includes one or more sensors mounted to or integrated with the train pantograph, a data acquisition unit for receiving signal or data from the sensors, and a processing unit for determining the train pantograph's structural health based on the received signal or data. Inspections via the system can be performed in real time continuously or periodically while a train is in service. It can also be performed offline while a train is not in service. Inspection method can be either passive, where sensors collect signals without generating excitation signals to the structure, or active, where some sensors are used as actuators to actively send excitation signals to the structure and other sensors or the actuators themselves collect the structural response signals. The data acquisition unit receives signals or data from sensors. The processing unit processes sensor data acquired by the data acquisition unit and determines if there are structural changes or damages.
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公开(公告)号：US20180356366A1
公开(公告)日：2018-12-13
申请号：US15989176
申请日：2018-05-25
申请人： Broadsens Corp.
发明人： Chang Zhang , Lei Liu
CPC分类号： G01N29/04 , G01N29/40 , G01N2291/0289
摘要： The present invention discloses a method for extending the detection range of a structural health monitoring (SHM) system. A structure being monitored is scanned multiple times. A scan with no collection delay covers an original detection area of the SHM system. Scans with collection delays cover extended detection areas. The SHM system's detection range is extended when results of multiple scans with different collection delays are combined.
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公开(公告)号：US20180162423A1
公开(公告)日：2018-06-14
申请号：US15817623
申请日：2017-11-20
申请人： Broadsens Corp.
发明人： Chang Zhang , Lei Liu
CPC分类号： B61G7/14 , B61G3/00 , B61G5/06 , B61L1/20 , B61L15/0018 , B61L15/0072 , B61L15/0081 , B61L23/00 , B61L27/0094
摘要： The present invention discloses a train coupler structural health monitoring system. The system includes one or more sensors mounted to or integrated with the train coupler, a data acquisition unit for receiving signal or data from the sensors, and a processing unit for determining the train coupler's structural health based on the received signal or data. Inspections via the system can be performed in real time continuously or periodically while a train is in service. It can also be performed offline while a train is not in service. Inspection method can be either passive, where sensors collect signals without generating excitation signals to the structure, or active, where some sensors are used as actuators to actively send excitation signals to the structure and other sensors or the actuators themselves collect the structural response signals. The data acquisition unit receives signals or data from sensors. The processing unit processes sensor data acquired by the data acquisition unit and determines if there are structural changes or damages.
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公开(公告)号：US20170160243A1
公开(公告)日：2017-06-08
申请号：US15360894
申请日：2016-11-23
申请人： Broadsens Corp.
发明人： Chang Zhang , Lei Liu
CPC分类号： G01N29/4427 , G01N29/04 , G01N29/043 , G01N29/2412 , G01N29/2437 , G01N2291/0258 , G01N2291/0289
摘要： The present invention discloses a smart structural health monitoring device. The device is an intelligent sensor device mounted onto or near the structure to be monitored. The device includes an actuating unit that generates acoustic or ultrasonic excitation signals across the structure, a sensor unit that receives the structure's responses to the excitation signals and generates corresponding sensor data, a processing unit that determines the structure's structural health (e.g., structural change, structural defect, structural damage) by processing the sensor data with analytics algorithms. The smart device also includes at least a non-volatile memory (e.g., Flash memory) for storing the structural health information and sensor data. Such a smart structural health monitoring device is capable of independently determining the structural changes and damages. And multiple smart structural health monitoring devices can be used for monitoring one or more structures at the same time. A remote management console is used to configure, schedule, coordinate, and control the devices through a network. Each device transmits the results of structural changes and damages to the remote management console through according to a schedule or upon request.
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公开(公告)号：US11169118B2
公开(公告)日：2021-11-09
申请号：US15989176
申请日：2018-05-25
申请人： Broadsens Corp.
发明人： Chang Zhang , Lei Liu
摘要： The present invention discloses a method for extending the detection range of a structural health monitoring (SHM) system. A structure being monitored is scanned multiple times. A scan with no collection delay covers an original detection area of the SHM system. Scans with collection delays cover extended detection areas. The SHM system's detection range is extended when results of multiple scans with different collection delays are combined.
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公开(公告)号：US10807621B2
公开(公告)日：2020-10-20
申请号：US15873820
申请日：2018-01-17
申请人： Broadsens Corp.
发明人： Chang Zhang , Lei Liu
摘要： The present invention discloses a train pantograph structural health monitoring system. The system includes one or more sensors mounted to or integrated with the train pantograph, a data acquisition unit for receiving signal or data from the sensors, and a processing unit for determining the train pantograph's structural health based on the received signal or data. Inspections via the system can be performed in real time continuously or periodically while a train is in service. It can also be performed offline while a train is not in service. Inspection method can be either passive, where sensors collect signals without generating excitation signals to the structure, or active, where some sensors are used as actuators to actively send excitation signals to the structure and other sensors or the actuators themselves collect the structural response signals. The data acquisition unit receives signals or data from sensors. The processing unit processes sensor data acquired by the data acquisition unit and determines if there are structural changes or damages.
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公开(公告)号：US20180299406A1
公开(公告)日：2018-10-18
申请号：US15950173
申请日：2018-04-11
申请人： Broadsens Corp.
发明人： Chang Zhang , Lei Liu
摘要： The present invention discloses a photoionization detector (PID) system that can perform calibrations automatically. The PID system comprises a measurement gas chamber and one or more calibration gas chambers. The one or more calibration gas chambers each hold a type of calibration gas. In one embodiment, a volatile organic compounds (VOCs) measurement and a calibration measurement are conducted in the same gas chamber. In another embodiment, VOCs and calibration measurements are conducted in different gas chambers either simultaneously or at different times.
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公开(公告)号：US10101298B1
公开(公告)日：2018-10-16
申请号：US15950173
申请日：2018-04-11
申请人： Broadsens Corp.
发明人： Chang Zhang , Lei Liu
摘要： The present invention discloses a photoionization detector (PID) system that can perform calibrations automatically. The PID system comprises a measurement gas chamber and one or more calibration gas chambers. The one or more calibration gas chambers each hold a type of calibration gas. In one embodiment, a volatile organic compounds (VOCs) measurement and a calibration measurement are conducted in the same gas chamber. In another embodiment, VOCs and calibration measurements are conducted in different gas chambers either simultaneously or at different times.
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公开(公告)号：US20180190897A1
公开(公告)日：2018-07-05
申请号：US15859666
申请日：2018-01-01
申请人： Broadsens Corp.
发明人： Chang Zhang , Shuangwen Liu , Lei Liu
IPC分类号： H01L41/113 , H01L41/047 , H01L41/053 , H01L41/187 , H05K1/03 , H05K1/18 , G01H11/08
CPC分类号： H01L41/1132 , B06B1/0651 , G01H11/08 , H01L41/0475 , H01L41/053 , H01L41/187 , H05K1/0393 , H05K1/181 , H05K2201/05
摘要： The present invention discloses a mechanically strengthened piezoelectric sensor for Structural Health Monitoring applications. The sensor includes a two-sided piezo ceramic component, a sensor encapsulation, and at least two wires. The sensor encapsulation has an indented side that forms a recessed area. The recessed area has a supporting structure. The two-sided piezo ceramic component is mounted into the recessed area of the encapsulation and is supported by the supporting structure with the side facing outwards slightly lower than the upper edge of the recessed area. The supporting structure of the encapsulation provides mechanical strength to the piezo ceramic component. The wires are attached to the electrodes of the piezo ceramic component and extend out of the encapsulation. Alternatively, the mechanically strengthened piezoelectric sensor may further include a Printed Circuit Board (PCB). The piezo ceramic component is mounted on the PCB. Then, the PCB is mounted into the recessed area of the encapsulation and is supported by the supporting structure with the side facing outwards slightly lower than the upper edge of the encapsulation.
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