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High-precision and high-stability frequency standard circuit

A high-stability, high-precision technology, applied in the high-stability frequency standard circuit, high-precision field, can solve the problems of large volume, poor precision, poor stability, etc., to achieve high precision, excellent stability, high stability Effect

Active Publication Date: 2021-05-28
北京瑞尔天天科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is the technical problem of poor precision, poor stability and large volume existing in the prior art

Method used

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  • High-precision and high-stability frequency standard circuit
  • High-precision and high-stability frequency standard circuit
  • High-precision and high-stability frequency standard circuit

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Embodiment 1

[0025] This embodiment provides a high-precision, high-stability frequency standard circuit, such as figure 1 , the high-precision, high-stability frequency standard circuit includes: a controller, a high-precision clock source, an FPGA unit, a shaping circuit, a recovery switch unit, a drive circuit array, and a gating control unit; the controller is connected to the FPGA unit, and the high-precision The clock source is connected to any frequency divider in the FPGA unit, and any frequency divider in the FPGA unit is connected to the control accumulator and the shaping circuit, and the control accumulator controls any frequency divider through the control logic; the shaping circuit is connected to the drive circuit through the recovery switch unit Array; the recovery switch unit is controlled by the gating control unit; the controller is used to receive control instructions to complete the frequency setting of the output signal and enable the output signal; the FPGA unit is us...

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Abstract

The invention relates to a high-precision and high-stability frequency standard circuit, solves the technical problems of poor precision, poor stability and large volume. A controller is connected with an FPGA unit, a high-precision clock source is connected to an arbitrary frequency divider in the FPGA unit, and the arbitrary frequency divider in the FPGA unit is connected with a control accumulator and a shaping circuit; the control accumulator controls the arbitrary frequency divider through control logic; the shaping circuit is connected with a driving circuit array through a recovery switch unit; the recovery switch unit is controlled by a gating control unit; the controller is used for receiving a control instruction to complete frequency setting of an output signal and enable the output signal; and the FPGA unit is used for receiving a set frequency value, performing frequency division processing on the high-precision clock source and outputting the set frequency scale signal, so that the problem is well solved, and the frequency standard circuit can be applied to the frequency standard circuit.

Description

technical field [0001] The invention relates to the testing field of a high-precision I / F conversion circuit of an inertial navigation system, in particular to a high-precision and high-stability frequency standard circuit. Background technique [0002] Provide high-precision and high-stability frequency standard signals in the test of high-precision I / F conversion circuits of inertial navigation systems. I / F conversion circuit is an important part of inertial navigation system, its performance index directly determines the accuracy of navigation system, so the performance parameters of I / F conversion circuit must be strictly tested during the development of inertial navigation system. The test of I / F conversion circuit has become a very important part in the production process of inertial navigation products. [0003] At present, the testing of high-precision I / F conversion circuits by major research institutes of inertial navigation systems is carried out by using foreign...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C25/00G01R31/28
CPCG01C25/005G01R31/282
Inventor 张国平吴明辉娄素兵曹晓辉
Owner 北京瑞尔天天科技有限公司
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