Absolute zero magnetic grid measuring system
An absolute zero point and measurement system technology, applied in the direction of using electric/magnetic devices to transmit sensing components, etc., can solve the problems of no way to find, no way to do nonlinear compensation, and the use range is not very wide, so as to achieve convenient installation and use, high precision effect
Active Publication Date: 2015-03-11
上海平信机电制造有限公司
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Problems solved by technology
[0002] The existing magnetic grid measurement system is divided into incremental type and absolute type. The incremental magnetic grid measurement system has no origin signal on the magnetic scale. If a power failure occurs during use, there is no way to find the original position, and Since there is no origin, there is no way to do nonlinear compensation; while the absolute magnetic grid measurement system is expensive, and has certain requirements for the connected system, the scope of use is not very wide
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[0016] Such as figure 1 As shown, an absolute zero magnetic grating measurement system includes a magnetic ruler 2 and a read head 1, and they work according to the principle of magnetic induction. When the read head 1 moves linearly in the magnetic field space of the magnetic ruler 2, the read head 1. According to the relative displacement of the movement, it will output real-time position pulses that meet industry standards.
[0017] The concrete structure of magnetic ruler 2 is as figure 2 As shown, there are two tracks, divided by the center, half of which is an incremental track 21, and the other half is an absolute zero track 22. Two absolute zero points 23 are provided on the absolute zero point track 22 .
[0018] The read head 1 is located directly above the magnetic ruler 2 and moves linearly along the length direction of the magnetic ruler. Its circuit structure is as follows image 3 Shown, comprise incremental sensor 11, zero position sensor 12, AND gate logic...
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The invention relates to an absolute zero magnetic grid measuring system which comprises a magnetic scale and a reading head, wherein an absolute zero magnetic track and an incremental magnetic track are arranged on the magnetic scale; at least one absolute zero is arranged on the absolute zero magnetic track; the reading head comprises an incremental sensor, a zero position sensor, an and gate logic circuit, a subdivision chip and a drive chip; the input terminal of the subdivision chip is connected with the incremental sensor; the A-phase and the B-phase signal output terminals of the subdivision chip are connected with the drive chip; and the pulse signal output terminal of the subdivision chip and the output terminal of the zero position sensor are accessed into the drive chip through the and gate logic circuit. Compared with the prior art, the measuring system has the advantages of high precision, convenience in use and the like.
Description
technical field [0001] The invention relates to a magnetic grid measurement system, in particular to an absolute zero magnetic grid measurement system. Background technique [0002] The existing magnetic grid measurement system is divided into incremental type and absolute type. The incremental magnetic grid measurement system has no origin signal on the magnetic scale. If a power failure occurs during use, there is no way to find the original position, and Since there is no origin, there is no way to do nonlinear compensation; and the absolute magnetic grid measurement system is expensive, and has certain requirements for the connected system, so the scope of use is not very wide. Contents of the invention [0003] The object of the present invention is to provide a high-precision and easy-to-use absolute zero-point magnetic grid measurement system in order to overcome the above-mentioned defects in the prior art. [0004] The purpose of the present invention can be achi...
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IPC IPC(8): G01D5/244
Inventor 刘坚伟姜堃达吴彬沈晓峰
Owner 上海平信机电制造有限公司