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A low-power power-off timekeeping module

A technology with low power consumption and time difference, applied in simulators, program control, instruments, etc., can solve the problems of reducing the reliability of the whole machine, slow charging of large-capacity batteries, and complicated charging circuits, and achieve the effect of reducing the complexity of integration

Active Publication Date: 2021-02-26
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] 3. Large-capacity batteries charge slowly, and the charging circuit is complicated, which reduces the reliability of the whole machine

Method used

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings.

[0019] A low-power power-off timing module, including a single-chip microcomputer, a temperature sensor, a low-power crystal oscillator, a time difference measurement chip, a power module and a battery;

[0020] Among them, the low-power crystal oscillator is used to generate the internal reference 10MHz signal, the temperature sensor is used to measure the temperature of the low-power crystal oscillator, the single-chip microcomputer uses the 10MHz signal generated by the low-power crystal oscillator to generate an internal 1PPS signal, and the power module is used to charge and discharge the battery management and level shifting;

[0021] After power on for the first time, the time difference measurement chip measures the time difference between the externally input reference 1PPS signal and the internal 1PPS signal, and the microcontroller collects the time differen...

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Abstract

The invention discloses a low-power consumption power-off timekeeping module, which relates to the technical field of timekeeping. The module includes a single-chip microcomputer, a temperature sensor, a low-power crystal oscillator, a time difference measurement chip, a power module and a battery. The invention can rely on the built-in battery of the power-off timekeeping module to maintain accurate time information after the clock synchronization device is powered off, and provide time reference for the device after the power supply is restored, and is especially suitable for various time service and timekeeping terminals.

Description

technical field [0001] The invention relates to the technical field of timekeeping, in particular to a low power consumption power-off timekeeping module. Background technique [0002] All kinds of ground, vehicle, ship, and airborne timing and timing terminals can obtain time information by tracking the external reference signal and taming the built-in rubidium atomic clock or constant temperature crystal oscillator. In order to avoid time loss caused by external power failure, a built-in large-capacity battery is often used to provide short-term battery power for the whole device, so that it can continue to maintain the accuracy of the internal time of the device. However, such methods have the following disadvantages: [0003] 1. It needs to be equipped with a large-capacity battery, which takes up a lot of space and high cost; [0004] 2. The power consumption of the equipment is high and the punctuality time is short; [0005] 3. The charging of large-capacity batter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/21119
Inventor 王铮蔚保国戴群雄易卿武鲍亚川左兆辉刘超刘轶龙陈涛刘晓宇
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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