31 results about "Immunity Testing" patented technology

An immunodiagnostic test method includes holding a selection of immunological test elements or consumables in one or more containers attached to or positioned in the analyzer and providing random access to any test element therein. The container can hold multiple types of test elements in compartments or slots. Through sensing of a test element position in its slot, the detection mechanism of the invention provides for random access to multiple types of test elements in any sleeve and within a single sleeve, and provides efficient inventory control. The method increases the number of test element types that may be loaded onto an analyzer and maintains fast determination of inventory.

Characteristics of a power MOSFET gate charge test waveform are evaluated to yield a highly reliable and uniform testing methodology that replaces the inconsistent and inefficient dv / dt immunity testing currently performed. The invention utilizes the ratio of QGD over QGS1 to replace traditional dv / dt immunity testing in order to perform binning and sorting the devices. The ratio of QGD over QGS1 has proven to be a very reliable substitute for standard dv / dt immunity tests, and a very accurate predictor of a power MOSFET's suitability for a specified purpose. Because the gate charge parameters are relatively easily measured with high accuracy, and independent of test set-up or tester, reliability is far greater than previous methods and improved efficient results. Additional ratios of charge parameters enhance the performance of the testing methodology of the present invention.

Provided for in some embodiments is, a method of electromagnetic compatibility multi-carrier immunity testing. The method includes generating a first carrier frequency set including a first plurality of carrier frequencies simultaneously such that a device under test is subjected to the first plurality of carrier frequencies simultaneously. One or more of the first plurality of carrier frequencies is substantially different from other ones of the first plurality of carrier frequencies such that the first plurality of carrier frequencies do not interfere with one another when they are generated simultaneously, and intermodulation products of the first plurality of carrier frequencies are not significant relative to the first plurality of carrier frequencies when the first plurality of carrier frequencies are generated simultaneously.

In an immunity test system of the present invention, a boundary point detection device changes a signal level of a transmission signal input to an antenna through a level adjusting device while monitoring an operation of an electronic equipment, and thereby detects a signal level of the transmission signal at a boundary point, at which the electronic equipment is changed from a normal operation state to an abnormal operation state, or vice versa, due to the test wave; and a test result storing device calculates an electric field strength of the test wave at the boundary point by using conversion data based on the signal level of the transmission signal at the boundary point detected by the boundary point detection device, and stores in a storage device a calculation result of the electric field strength as well as a test condition used for obtaining the electric field strength.

A system, such as a magnetic immunity testing system, can include a first coil configured to generate a first magnetic field. The first coil can be disposed on a first side of a scanning volume and can have a first feed for supplying electric current to the first coil. A second coil can be similarly configured on an opposite side of a scanning volume, and a second magnetic field from the second coil can be combined with the first magnetic field to form a combined magnetic field. The coils can be provided with transporters that translate coils in at least one dimension. The system can also include a controller that is configured to control the transporters and the feeds to provide the combined magnetic field as a controlled and calibrated magnetic field over the scanning volume.

The invention discloses a test device, method and system for inductive discharge anti-disturbance ability of intelligent equipotential operation equipment. Under the condition of the first arc discharge current; according to the first arc discharge current fitting, to determine the arc discharge current fitting formula; according to the arc discharge current fitting formula, calculate the target intelligent equipotential operation equipment at the preset working voltage, The second arc discharge current under different capacitances to ground and different arc length conditions; calculate the first capacitance according to the maximum second arc discharge current; adjust the capacitance of the adjustable capacitor to be the first capacitance, and adjust the output voltage of the test transformer to be The voltage is preset to conduct an induction discharge immunity test, and the induction discharge immunity of the target intelligent equipotential operation equipment is determined according to the working state of the target intelligent equipotential operation equipment.

The invention discloses a pig foot-and-mouth disease virus O-type broad spectrum multi-epitope recombination antigen and application thereof and belongs to the field of biological vaccines. The pig foot-and-mouth disease virus O-type broad spectrum multi-epitope recombination antigen adopts a strategy of an antigenized antibody, after main antigen epitopes of a plurality of strains of pig foot-and-mouth disease virus O-type are connected in series reasonably, the plurality of strains of pig foot-and-mouth disease virus O-type are coupled with a pig intravenous gamma globulin (IgG) heavy chain constant region to construct the pig foot-and-mouth disease virus O-type broad spectrum multi-epitope recombination antigen, and after ration through a Bio-Rad protein ration kit, the pig foot-and-mouth disease virus O-type broad spectrum multi-epitope recombination antigen and recombination foot-and-mouth disease virus 3D protein are matched to prepare the vaccines. Animal immunity testing results show that the vaccines can stimulate an organism to generate high-titer protective antibodies when the vaccines are used independently or matched with the recombination foot-and-mouth disease virus 3D protein to be used, an antibody level is higher than a national standard, and good application prospects are achieved.

The invention relates to the technical field of testing, and provides a calibration device for testing the immunity of automobile electronic conduction. A calibration device for automotive electronic conduction immunity testing, including a signal generator, an amplification module, an inductive coupling clamp, a matching module, a measurement module, a transmission module and a tooling fixture, the tooling fixture is used to fix and support the transmission module and is The jig connecting the transmission module and the matching module, the interference signal generation module injects interference current through the inductive coupling clamp, and verifies the induced current generated on the transmission line through magnetic induction coupling. The verification device used for the test of the immunity of automobile electronic conduction can ensure the reliability and stability of the test, has high operability, strong repeatability, is economical, simple and easy to operate, has a simple and stable structure, and saves time and cost. The advantages. The invention also proposes a calibration method for testing the immunity of automobile electronic conduction.

The invention provides an electrical fast transient-burst noise immunity testing system under an on-load condition of an electric energy meter. The electrical fast transient-burst noise immunity testing system comprises a single-phase and three-phase voltage-stabilized power supply, an electrical fast transient-burst generation device, an adjustable simulated load device, a single-phase or three-phase to-be-tested electric energy meter (hereinafter referred to as a to-be-tested object), an error checking device, a photoelectric sampling head and a single-phase or three-phase reference electric energy meter (hereinafter referred to as a reference object); the testeetested object in the system and the reference object are identical products. An output end of the single-phase and three-phase voltage-stabilized power supply is connected with the electrical fast transient-burst generation device and the adjustable simulated load device; the output end of the electrical fast transient-burst generation device is connected with the to-be-tested object; the to-be-tested object is connected with the output end of the adjustable simulated load device; photoelectric pulse output of the to-be-tested object is connected (in non-contact) with the photoelectric sampling head of the error checking device; an input end of the reference object is connected with the error checking device; the photoelectric pulse output of reference object is connected (in non-contact) with the photoelectric sampling head of the error checking device. The system can be used for safely and reliably testing; a filtering device does not need to be additionally arranged completely, so that the cost is low; a method is simple and a result is credible.