公开(公告)号：US3877291A

公开(公告)日：1975-04-15

申请号：US34256673

申请日：1973-03-19

Applicant: BORG WARNER

Inventor： HOPPESCH JOSEPH P ,  SCHUBERT STUART A

IPC: G01N27/04 ,  G01N27/12 ,  G01N33/497 ,  G01N27/14

CPC classification number: G01N27/122 ,  G01N33/4972

Abstract: A breath tester, in two embodiments, employing an alcohol detecting element (e.g. a zinc oxide semiconductor element) which, prior to use, is purged by pumping ambient air across it and maintaining it at a higher than normal operating temperature. In use, after a purging period the air pumping is stopped and the detector heaters are turned off, while breath is directed to the detector and any resulting change in properties (conductivity/resistivity) is sensed and signaled. The first embodiment is largely manually operated and uses a meter to signal both the breath alcohol concentration, and also the purged state of the detecting element. The second embodiment is largely automatic, includes timers and interlocks to prevent misuse, and employs lights to signal its outputs (''''fail,'''' for over one BAC level, ''''warn'''' for over a lower BAC level and ''''pass'''' for under that level) as well as its operational status (''''power'''' on, ''''wait,'''' ''''ready,'''' ''''test''''). Both embodiments may be battery powered and means for sensing and signaling the charge level on the batteries is disclosed.

Abstract translation: 在两个实施方案中，呼吸测试仪采用酒精检测元件（例如氧化锌半导体元件），其在使用之前通过泵送环境空气并将其保持在高于正常工作温度而被清除。 在使用中，在清洗期间，空气泵送停止并且检测器加热器被关闭，同时呼吸被引导到检测器，并且任何所得到的特性（电导率/电阻率）的变化被感测和发出信号。 第一实施例主要是手动操作的，并且使用仪表来表示呼吸酒精浓度以及检测元件的清除状态。 第二个实施例很大程度上是自动的，包括定时器和互锁以防止误用，并采用灯光来表示其输出（“失败”超过一个BAC级别，“警告”超过较低的BAC级别，并在该级别“通过” ）以及其运行状态（“权力”，“等待”，“准备”，“测试”）。 两个实施例可以是电池供电的，并且公开了用于感测和指示电池上的充电水平的装置。

公开(公告)号：US3886929A

公开(公告)日：1975-06-03

申请号：US35715473

申请日：1973-05-04

Applicant: BORG WARNER

Inventor： HOPPESCH JOSEPH P ,  WARD DONALD H ,  TOMASHEK JAMES R

IPC: G01D18/00 ,  G01N33/497 ,  G01R17/10 ,  A61B5/08

CPC classification number: G01R17/10 ,  G01D18/002 ,  G01N33/4972

Abstract: A breath alcohol concentration detecting system includes an alcohol detector having a bridge circuit. Before testing a gas sample from a human subject, the system is cycled to provide a reference signal which is stored to indicate the imbalance initially present in the detector bridge circuit. The test is then run to provide an information signal which is compared with the stored reference signal and utilized in the production of an output signal which is some function of the difference between the information signal and the stored reference signal.

公开(公告)号：US3886786A

公开(公告)日：1975-06-03

申请号：US18180571

申请日：1971-09-20

Applicant: BORG WARNER

Inventor： HOPPESCH JOSEPH P ,  WARD DONALD H ,  TOMASHEK JAMES R

IPC: G01D18/00 ,  G01N33/497 ,  G01N33/16

CPC classification number: G01N33/4972 ,  G01D18/002

Abstract: A null memory system is provided for gas testing systems of the type that produce a d.c. signal whose maximum amplitude is indicative of the alcohol concentration of a sample in which an initial, just prior to test, output of the gas detector is automatically taken and that d.c. signal stored in a holding amplifier with which the sample''s output is compared, to counter detector drift and to obviate meter nulling.

公开(公告)号：US3858434A

公开(公告)日：1975-01-07

申请号：US31389172

申请日：1972-12-11

Applicant: BORG WARNER

Inventor： HOPPESCH JOSEPH P ,  PADGITT KENNETH W ,  WARD DONALD H

IPC: G01N33/497 ,  G01N31/00

CPC classification number: G01N33/4972

Abstract: A control system for a breath tester is disclosed. The tester includes a chamber in which a breath sample is stored, a detector unit positioned to test breath therein and means for shielding the detector unit from the chamber while breath is flowing into the chamber and for unshielding the detector unit thereafter to provide a relatively quiescent breath sample to the detector. A purge pump is also provided. The control system includes means for sensing the breath flow into the chamber during the test and for automatically cutting off that flow, timing a period to allow a quiescent state to be reached and only then allowing the detector unit to be unshielded. It also employs the initial offcycling of a thermostatically controlled heater, after the turning-on of the tester, to indicate the approach of operating conditions and includes interlocks to prevent improper operation and to ensure consistent results.

Abstract translation: 公开了一种用于呼吸测试仪的控制系统。 该测试器包括一个其中存储有呼吸样本的室，一个位于其中测试呼吸的检测器单元，以及用于在呼吸流入该腔室期间屏蔽该检测器单元与该腔室的装置，并且此后不使该检测器单元提供相对静止的装置 呼吸样本到检测器。 还提供清洗泵。 控制系统包括用于在测试期间感测进入腔室的呼吸气流并用于自动切断该流量的装置，定时一段时间以允许达到静止状态，并且仅允许检测器单元不被屏蔽。 它也采用恒温控制加热器的初始脱扣，在测试仪开启后，指示操作条件的接近，并包括互锁以防止不正确的操作并确保一致的结果。