Abstract: A system has a battery serving as a DC voltage source for electrical equipment of the system, a sensor for sensing an electric field (e-field) generated by the DC voltage source, sensor signal processing circuitry connected to the sensor for receiving a sensor output signal therefrom, and an e-field indicating device coupled to the sensor signal processing circuitry for receiving a processed DC e-field signal therefrom. The sensor outputs the sensor output signal, which is dependent upon a distance between the sensor and the DC voltage source. The sensor signal processing circuitry derives a processed direct current (DC) e-field signal from the sensor output signal. The e-field indicating device outputs the e-field indicating signal in response to the processed DC e-field signal indicating that the e-field exceeds an e-field threshold level.

Abstract: Apparatus for inspecting containers traveling in sequence on a linear conveyor that includes an infeed mechanism having a first endless drive belt with a portion overlying the conveyor for abutting engagement by containers in sequence traveling on the conveyor, and a first motor driving the belt at a speed greater than the speed of the conveyor for diverting containers laterally at least partially off the conveyor. An abutment assembly is disposed in opposition to the first belt for abutting engagement by containers diverted by the infeed mechanism, such that containers diverted from the conveyor and engaged between the first belt and the abutment assembly are rotated during longitudinal travel along the abutment assembly. Apparatus inspects the containers as they are rotated during travel along the abutment assembly.

Abstract: Apparatus for detecting containers of predetermined diameter that includes a pair of optical proximity sensors positioned adjacent to a container conveyor such that light energy from the sensors is incident sequentially on the containers as the containers pass on the conveyor adjacent to the sensors. The sensors are adjustably positionable with respect to each other such that the sensors are spaced from each other in the direction of container motion on the conveyor. An electronic circuit is coupled to the sensors for detecting passage of containers on the conveyor while ignoring dithering of the containers. In the preferred embodiment of the invention, the sensors are mounted on a common support having a scale for measuring separation between the sensors. Printed indicia in units of container diameter, preferably in both English and metric units, is affixed to the support adjacent to the scale.

Abstract: A system and method for contact measurement of dimensional parameters of a container in which rollers coupled to LVDT sensors are placed in contact with a container as the container is rotated about its central axis so that the sensors develop analog signals that vary as a function of variations in geometry of the container. The sensor output signals are fed through multiple input channels to an a/d convertor/multiplexer, which is controlled by a central microcontroller for selecting in turn among the plurality of sensor signals. Within the microcontroller, each sensor signal is compared to a threshold indicative of maximum acceptable deviation of the corresponding dimensional parameter, and the container under test is rejected if the parameter exceeds such threshold. The microcontroller includes facility for real-time display of measured parameters in English or metric units at the selection of an operator, and for communication of measurement data to a remote computer.