A digital meter automatic detection device
An automatic detection device and digital meter technology, applied in the direction of measuring devices, measuring electrical variables, instruments, etc., can solve the problems that cannot be separated from manual operation, and achieve the effects of small volume and weight, fast function fault location, and simple structure
Active Publication Date: 2017-07-07
BEIJING AEROSPACE MEASUREMENT & CONTROL TECH
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Problems solved by technology
[0003] In view of this, the present invention provides an automatic detection device for digital meters, which can realize automatic function testing, solve the dilemma of being unable to separate from manual operation, save human resources, and improve production efficiency and device aging efficiency
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[0029] The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0030] The invention provides a digital meter automatic detection device, such as figure 1 As shown, the device includes a main control module and a tooling module. Both the main control module and the tooling module are connected with the digital meter as the measured object.
[0031] The tooling module is packaged as a chassis or a board, preferably as a PXI bus board, then multiple PXI bus boards are loaded into a PXI chassis, and the test of each object under test can be performed at the same time.
[0032] Such as figure 2 As shown, the external interface of the tooling module includes terminals 1 to 4, terminal 1 is a four-wire auxiliary terminal, terminal 2 is an AC / DC voltage resistance output terminal, terminal 3 is a grounding terminal, and terminal 4 is an AC / DC current output terminal; 1 to 4 correspond to the 4 terminals connected to the s...
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The invention discloses an automatic detection device of a digital meter. The automatic detection device can be used for achieving automatic function testing and overcoming the awkward situation that manual operation cannot be avoided, and manpower resources are saved. The device comprises a main control module and a tool module. The main control module is connected with a controller of a detected object, and the controller is used for controlling function gear switching of the detected object. The main control module is further connected with an FPGA of the tool module, and the FPGA is used for controlling a testing process of the tool module. The tool module is in butt joint with the detected object through terminals, wherein the same definition is adopted for the terminals. In the tool module, the FPGA is connected with a control execution module, the control execution module is connected with an alternating / direct current voltage generation circuit, an alternating / direct current generation circuit, a switch and a relay array, the alternating / direct current voltage generation circuit is sequentially connected with a voltage amplification circuit and a voltage signal conditioning circuit, the alternating / direct current generation circuit is sequentially connected with a current amplification circuit and a current signal conditioning circuit, the switch is connected with the voltage signal conditioning circuit and the relay array, and the relay array is connected with a resistor array.
Description
technical field [0001] The invention relates to the technical field of digital meter detection, in particular to a digital meter automatic detection device. Background technique [0002] The production process of the current digital meter is generally debugging, data calibration, machine copying, environmental test and maintenance. Before data calibration, the product needs to use a variety of discrete instruments and equipment for functional verification, and automatic function testing cannot be realized. During the computer testing process, it is necessary to manually replace the test tooling or perform manual single-board testing at regular intervals, resulting in the dilemma of not being able to escape from manual operations, wasting human resources, low production efficiency and device burn-in efficiency, and over-reliance on field testing and on-site maintenance fault location by users. Standard signal sources, such as FLUKE5500A, are bulky and heavy, making it inconve...
Claims
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IPC IPC(8): G01R35/00
Inventor 肖江涛张斌狄龙郑坤
Owner BEIJING AEROSPACE MEASUREMENT & CONTROL TECH