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1. 发明申请

US20110304844A1 GAS SENSOR AND PROCESS FOR MEASURING MOISTURE AND CARBON DIOXIDE CONCENTRATION 有权
标题翻译：气体传感器和测量水分和二氧化碳浓度的过程
公开(公告)号：US20110304844A1
公开(公告)日：2011-12-15
申请号：US12861942
申请日：2010-08-24
申请人： Bert WILLING , Markus Kohli , Andreas Seifert
发明人： Bert WILLING , Markus Kohli , Andreas Seifert
IPC分类号： G01N21/61 , G01J3/00
CPC分类号： G01N21/39 , G01N21/0332 , G01N33/004 , G01N33/006 , G01N2021/158 , G01N2021/3129 , G01N2021/3144 , G01N2021/354 , G01N2021/399 , G01N2201/024 , Y02A50/244
摘要： An TDLS gas sensor with a measuring pick-up to be arranged outside of the interior chamber of an incubator or a climate chamber of similar design, and with an absorption pick-up to be arranged inside the interior chamber, and also with a window separating the measuring area and absorption area for the atmospheric separation of the laser diode from the interior chamber of the incubator, with the window being arranged at an angle to the axis of the laser beam emitted by a laser diode, and with the optronic components being arranged in a block of material in the measuring pick-up, said block being made of thermally well-conducting material and serving as heat sink, and with a heating system for the window in the measuring pick-up. The TDLS gas sensor is easy to install and remove and permits the measurement of moisture and of the carbon dioxide concentration in one measuring cycle. However, it does not need to be removed for the sterilization. By installing an additional laser diode for measuring oxygen, the TDLS gas sensor can be used to perform a wide bandwidth of measurements. In addition, the invention concerns a process for measuring the moisture and the carbon dioxide concentration.
摘要翻译：具有测量拾取器的TDLS气体传感器将布置在孵化器或类似设计的气候室的内部室外，并且吸收拾取器布置在内部室内，并且还具有分隔开的窗口所述测量区域和所述激光二极管与所述培养箱的内部室大气分离的吸收区域，其中所述窗口以与激光二极管发射的激光束的轴线成一定角度布置，并且所述光电子部件被布置在测量拾取器中的一块材料中，所述块由导热材料制成并用作散热器，并且具有用于测量拾取器中的窗口的加热系统。 TDLS气体传感器易于安装和拆卸，允许在一个测量周期内测量水分和二氧化碳浓度。但是，不需要去除灭菌。通过安装用于测量氧气的附加激光二极管，TDLS气体传感器可用于执行宽带宽的测量。此外，本发明涉及一种测量水分和二氧化碳浓度的方法。

2. 发明申请

US20100002235A1 LASER DIODE ARRANGEMENTS AND METHOD FOR GAS DETECTION 审中-公开
标题翻译：激光二极管安装和气体检测方法
公开(公告)号：US20100002235A1
公开(公告)日：2010-01-07
申请号：US12350331
申请日：2009-01-08
申请人： Bert WILLING , Markus KOHLI , Andreas SEIFERT
发明人： Bert WILLING , Markus KOHLI , Andreas SEIFERT
IPC分类号： G01N21/00 , H01S3/04
CPC分类号： G01N21/39 , G01N21/3504 , G01N2021/399 , H01S5/005 , H01S5/02288 , H01S5/02292 , H01S5/02296 , H01S5/02415
摘要： A gas detection laser diode device and gas detection unit including the gas detection laser diode device having a hermetically sealed housing with electrical connectors at the bottom and a window, and inside the housing a laser diode and thermistor mounted on one stage of a thermo element. The thermo element is connected with the other stage to the base of the housing. Collimating means are arranged in the laser beam between the laser diode and the window. The window is tilted in respect to the axis of the laser beam such, that the ordinary reflection of the laser beam is steered off the laser beam axis and at least does not impinge on the laser diode. Preferably the collimating means and the laser diode are mounted on a same surface for holding them on the same temperature. The new device allows the detection of toxic gases with reduced detection limits over the prior art. The arrangement further claims a method to achieve reduced detection limits for gases.
摘要翻译：一种气体检测激光二极管器件和气体检测单元，其包括气体检测激光二极管器件，其具有在底部具有电连接器的气密密封壳体和窗口，并且在壳体内部，安装在热元件的一个级上的激光二极管和热敏电阻。热元件与另一个台架连接到外壳的底座。在激光二极管和窗口之间的激光束中布置准直装置。窗口相对于激光束的轴线倾斜，使得激光束的普通反射被转移离开激光束轴线，并且至少不会照射到激光二极管上。优选地，准直装置和激光二极管安装在相同的表面上以将它们保持在相同的温度上。与现有技术相比，新装置允许检测有毒气体的检测限降低。该装置还要求一种实现减少气体检测限的方法。

3. 发明申请

US20080198364A1 GAS SENSOR 有权
标题翻译：气体传感器
公开(公告)号：US20080198364A1
公开(公告)日：2008-08-21
申请号：US11840324
申请日：2007-08-17
申请人： Bert Willing , Markus Kohli , Andreas Seifert
发明人： Bert Willing , Markus Kohli , Andreas Seifert
IPC分类号： G01N21/00
CPC分类号： G01N21/1702 , G01N21/39 , G01N2021/1704 , G01N2021/399
摘要： A combined gas sensor device allowing the measuring of the concentration of a gas by tunable diode laser spectrometry as well as by resonant photo-acoustics within one housing. A laser beam used for laser spectrometry is sent across the openings of a measuring cell usually used for resonant photo-acoustic determination. Thus, both measuring principles use the same gas sensing module with a minimum of space consumption, so that the device can be produced with minimum dimensions. Further, a common opto-electronics and electronics platform can be used which reduces the overall costs of such a combined gas sensor.
摘要翻译：一种组合的气体传感器装置，允许通过可调谐二极管激光光谱测量气体的浓度以及在一个壳体内通过共振光声学来测量气体浓度。用于激光光谱测量的激光束穿过通常用于共振光声测定的测量池的开口。因此，两种测量原理都使用具有最小空间消耗的相同的气体感测模块，使得可以以最小尺寸生产该装置。此外，可以使用通常的光电子和电子平台，这降低了这种组合气体传感器的总体成本。

4. 发明授权

US07414727B2 Gas detection method and gas detection device 有权
标题翻译：气体检测方法和气体检测装置
公开(公告)号：US07414727B2
公开(公告)日：2008-08-19
申请号：US11413473
申请日：2006-04-28
申请人： Bert Willing , Markus Kohli , Andreas Seifert
发明人： Bert Willing , Markus Kohli , Andreas Seifert
IPC分类号： G01N21/00
CPC分类号： G01N21/39
摘要： A method for etalon suppression in a gas detection device by determining an etalon fringe period during a calibration step without gas in dependency of the DC drive current. A measuring signal which is a function of the gas absorption and substantially independent of an intensity modulation of an initial light signal at an initial frequency (f) is generated by determining a first pre-measuring signal when the laser source is operated at the center of the gas absorption peak, a second pre-measuring signal when the laser source is operated with a DC drive current below the gas absorption peak of the gas to be detected, and a third pre-measuring signal when the laser source is operated with a DC drive current above said gas absorption peak, with a difference between said DC drive currents which corresponds to the etalon fringe period determined in a calibration step before. The final measuring signal is determined as the difference between the first pre-measuring signal and the arithmetic mean of the second pre-measuring signal and the third pre-measuring signal.
摘要翻译：一种气体检测装置中的标准具抑制方法，其通过根据直流驱动电流在没有气体的校准步骤中确定标准具条纹周期。当初始频率（f）处的初始光信号的强度调制基本上不依赖于气体吸收的函数的测量信号是通过当激光源在中心处操作时确定第一预测量信号来产生的气体吸收峰值，当激光源以低于待检测气体的气体吸收峰值的DC驱动电流操作时的第二预测量信号，以及当激光源用DC操作时的第三预测量信号驱动电流高于所述气体吸收峰，所述DC驱动电流之间的差异对应于在之前的校准步骤中确定的标准具条纹周期。最终测量信号被确定为第一预测信号和第二预测信号和第三预测信号的算术平均值之间的差值。

5. 发明申请

US20080073536A1 Gas detection method and gas detection device 审中-公开
标题翻译：气体检测方法和气体检测装置
公开(公告)号：US20080073536A1
公开(公告)日：2008-03-27
申请号：US11604545
申请日：2006-11-27
申请人： Bert Willing , Markus Kohli , Andreas Seifert
发明人： Bert Willing , Markus Kohli , Andreas Seifert
IPC分类号： G01N21/35
CPC分类号： G01N21/1702
摘要： A gas detection method by using a photo acoustic near infrared gas sensor with a laser source and such a gas sensor comprising at least one amplitude modulated laser source, a gas chamber for receiving the gas to be detected, a microphone attached to the gas chamber, a photo detector for receiving the laser light after having passed through the gas filled gas chamber, processing means comprising a modulation frequency generator for providing a modulation signal for the at least one laser source and a control means for determining the gas concentration. The laser source changes it output wavelength across each cycle of the amplitude modulation between a minimum wavelength and a maximum wavelength. The result of this measurement scheme is that during each modulation cycle, the laser source scans its complete available wavelength range so that the absorption features of the target gas are levelled out to a mean value. This mean value is relatively insensitive to small variations of the laser's center wavelength; which are introduced by temperature variations.
摘要翻译：使用具有激光源的光声近红外气体传感器的气体检测方法以及包括至少一个幅度调制激光源的气体传感器，用于接收待检测气体的气室，附着到气室的麦克风，用于在通过填充气体的气体室之后接收激光的光电检测器，包括用于提供用于至少一个激光源的调制信号的调制频率发生器的处理装置和用于确定气体浓度的控制装置。激光源在最小波长和最大波长之间的幅度调制的每个周期改变其输出波长。该测量方案的结果是，在每个调制周期期间，激光源扫描其完整的可用波长范围，使得目标气体的吸收特征被平衡到平均值。该平均值对激光器的中心波长的小变化相对不敏感; 这是通过温度变化引入的。

6. 发明申请

US20070030487A1 Gas detection method and gas detection device 有权
标题翻译：气体检测方法和气体检测装置
公开(公告)号：US20070030487A1
公开(公告)日：2007-02-08
申请号：US11227477
申请日：2005-09-15
申请人： Bert Willing , Markus Kohli , Andreas Seifert
发明人： Bert Willing , Markus Kohli , Andreas Seifert
IPC分类号： G01N21/00
CPC分类号： G01N21/39 , G01J3/433 , G01N21/3504 , G01N2201/0691
摘要： The gas detector device comprises at least a VCSEL source and at least a light sensor for detecting a light beam having passed through a sample chamber containing a given gas to be detected. The detection signal of the sensor directly provided to or is time derivated by an electronic derivator and then provided to respective lock-in amplifiers in order to generate a two different 2f-detection, f being the frequency of a wavelength modulation of the source, and thus to provide two corresponding measuring signals the division of which gives a precise value of the gas concentration. The invention uses at least a first modulation reference signal at twice and a second modulation reference signal at twice of the modulation frequency of the laser source. Providing at least a first 2f modulation reference signal has advantages over the prior art, because by using such a reference modulation signal it is possible measure the absolute intensity and therefore to receive the same result at different temperatures or at mode hopping of the laser. A further advantage is that the measurement accuracy is independent from the gas concentration.
摘要翻译：气体检测器装置至少包括VCSEL源和至少一个光传感器，用于检测通过含有待检测的给定气体的样品室的光束。传感器的检测信号直接提供给电子推导器或由时间导出，然后提供给相应的锁定放大器，以产生两个不同的2f检测，f是源的波长调制频率，以及从而提供两个对应的测量信号，其分配给出了气体浓度的精确值。本发明在激光源的调制频率的两倍的两倍和第二调制参考信号下至少使用第一调制参考信号。提供至少第一2f调制参考信号具有优于现有技术的优点，因为通过使用这样的参考调制信号，可以测量绝对强度并因此在激光器的不同温度或模式跳变时接收相同的结果。另外的优点是测量精度与气体浓度无关。

7. 发明授权

US07605922B2 Method and gas sensor for performing quartz-enhanced photoacoustic spectroscopy 有权
标题翻译：用于执行石英增强光声光谱的方法和气体传感器
公开(公告)号：US07605922B2
公开(公告)日：2009-10-20
申请号：US11970570
申请日：2008-01-08
申请人： Bert Willing , Markus Kohli , Andreas Seifert
发明人： Bert Willing , Markus Kohli , Andreas Seifert
IPC分类号： G01J3/30 , G01N21/00
CPC分类号： G01N21/1702 , G01N21/274
摘要： A method for performing quartz-enhanced photoacoustic spectroscopy of a gas, includes providing a light source configured to introduce a laser beam having at least one wavelength into the gas such said at least one molecule within in the gas is stimulated generating an acoustic signal, accumulating the acoustic signal in a resonant acoustic detector, generating a resonant absorption signal (SA) relative to the gas concentration by at least one tuning fork serving as resonant acoustic detector, generating additionally a resonant intensity signal (SI) proportional to the intensity of the laser beam travelling through the gas, and providing an output signal (SGC) from said absorption signal (SA) and said intensity signal (SI) being independent of the intensity of the light relative to the presence or concentration of the gas.
摘要翻译：一种用于执行气体的石英增强光声光谱的方法，包括提供被配置为将具有至少一个波长的激光束引入到气体中的光源，所述气体中的所述至少一个分子被激发以产生声信号，谐振声检测器中的声信号，通过用作谐振声检测器的至少一个音叉产生相对于气体浓度的谐振吸收信号（SA），产生与激光强度成比例的谐振强度信号（SI）并且提供来自所述吸收信号（SA）的输出信号（SGC）和所述强度信号（SI）的光束相对于气体的存在或浓度独立于光的强度。

8. 发明申请

US20060098202A1 Gas detection method and gas detector device 有权
标题翻译：气体检测方法和气体检测装置
公开(公告)号：US20060098202A1
公开(公告)日：2006-05-11
申请号：US10533278
申请日：2004-07-30
申请人： Bert Willing , Markus Kohli , Andreas Seifert
发明人： Bert Willing , Markus Kohli , Andreas Seifert
IPC分类号： G01N21/61
CPC分类号： G01N21/3504 , G01N21/39 , G01N2021/3133 , G01N2021/3185 , G01N2021/399 , G01N2201/0691
摘要： A gas detector device comprises at least a VCSEL source (34, 36) and at least a light sensor (54, 56) for detecting a light beam (50, 52) having passed through a sample chamber (48) containing a given gas to be detected. The sensor is a photodiode in a first embodiment and its detection signal is time derivated by an electronic derivator (64) and then provided to two lock-in amplifiers (84, 86) in order to generate a F-detection and a 2F-detection, F being the frequency of a wavelength modulation of the source, and thus to provide two corresponding measuring signals the division of which gives a precise value of the gas concentration. In a second embodiment, the source is a pyroelectric sensor which directly provides a detection signal proportional to the time derivate of the light beam incident on this sensor. In this last case, the electronic derivator is thus eliminated.
摘要翻译：气体检测器装置至少包括VCSEL源（34,36）和至少一个光传感器（54,56），用于检测已经穿过含有给定气体的样品室（48）的光束（50,52）被检测。传感器是第一实施例中的光电二极管，其检测信号由电子推导器（64）导出，然后提供给两个锁定放大器（84,86），以产生F检测和2F检测，F是源的波长调制的频率，并且因此提供两个对应的测量信号，其分配给出了气体浓度的精确值。在第二实施例中，源是热电传感器，其直接提供与入射在该传感器上的光束的时间导数成比例的检测信号。在最后的情况下，因此消除了电子推导器。

9. 发明授权

US08330107B2 Gas sensor and process for measuring moisture and carbon dioxide concentration 有权
标题翻译：气体传感器和测量水分和二氧化碳浓度的过程
公开(公告)号：US08330107B2
公开(公告)日：2012-12-11
申请号：US12861942
申请日：2010-08-24
申请人： Bert Willing , Markus Kohli , Andreas Seifert
发明人： Bert Willing , Markus Kohli , Andreas Seifert
IPC分类号： G01J1/00
CPC分类号： G01N21/39 , G01N21/0332 , G01N33/004 , G01N33/006 , G01N2021/158 , G01N2021/3129 , G01N2021/3144 , G01N2021/354 , G01N2021/399 , G01N2201/024 , Y02A50/244
摘要： An TDLS gas sensor with a measuring pick-up to be arranged outside of the interior chamber of an incubator or a climate chamber of similar design, and with an absorption pick-up to be arranged inside the interior chamber, and also with a window separating the measuring area and absorption area for the atmospheric separation of the laser diode from the interior chamber of the incubator, with the window being arranged at an angle to the axis of the laser beam emitted by a laser diode, and with the optronic components being arranged in a block of material in the measuring pick-up, said block being made of thermally well-conducting material and serving as heat sink, and with a heating system for the window in the measuring pick-up. In addition, a process for measuring the moisture and the carbon dioxide concentration.
摘要翻译：具有测量拾取器的TDLS气体传感器将布置在孵化器或类似设计的气候室的内部室外部，并且吸收拾取器布置在内部室内，并且还具有分隔开的窗口所述测量区域和所述激光二极管与所述培养箱的内部室大气分离的吸收区域，其中所述窗口以与激光二极管发射的激光束的轴线成一定角度布置，并且所述光电子部件被布置在测量拾取器中的一块材料中，所述块由导热材料制成并用作散热器，并且具有用于测量拾取器中的窗口的加热系统。另外，测定水分和二氧化碳浓度的方法。

10. 发明申请

US20090027677A1 METHOD AND GAS SENSOR FOR PERFORMING QUARTZ-ENHANCED PHOTOACOUSTIC SPECTROSCOPY 有权
标题翻译：方法和气体传感器，用于执行增强型光电倍增管
公开(公告)号：US20090027677A1
公开(公告)日：2009-01-29
申请号：US11970570
申请日：2008-01-08
申请人： Bert WILLING , Markus KOHLI , Andreas SEIFERT
发明人： Bert WILLING , Markus KOHLI , Andreas SEIFERT
IPC分类号： G01N21/00
CPC分类号： G01N21/1702 , G01N21/274
摘要： A method for performing quartz-enhanced photoacoustic spectroscopy of a gas, includes providing a light source configured to introduce a laser beam having at least one wavelength into the gas such said at least one molecule within in the gas is stimulated generating an acoustic signal, accumulating the acoustic signal in a resonant acoustic detector, generating a resonant absorption signal (SA) relative to the gas concentration by at least one tuning fork serving as resonant acoustic detector, generating additionally a resonant intensity signal (SI) proportional to the intensity of the laser beam travelling through the gas, and providing an output signal (SGC) from said absorption signal (SA) and said intensity signal (SI) being independent of the intensity of the light relative to the presence or concentration of the gas.
摘要翻译：一种用于执行气体的石英增强光声光谱的方法，包括提供被配置为将具有至少一个波长的激光束引入到气体中的光源，所述气体中的所述至少一个分子被激发以产生声信号，谐振声检测器中的声信号，通过用作谐振声检测器的至少一个音叉产生相对于气体浓度的谐振吸收信号（SA），产生与激光强度成比例的谐振强度信号（SI）并且提供来自所述吸收信号（SA）的输出信号（SGC）和所述强度信号（SI）的光束相对于气体的存在或浓度独立于光的强度。

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