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Method and system for measuring battery capacity of on-board units

A technology for vehicle-mounted units and battery power, applied in the direction of measuring electricity, measuring devices, and measuring electrical variables, etc., can solve problems such as waste, affecting normal transactions, and replacing batteries in vehicle units in advance, achieving high accuracy and avoiding waste.

Active Publication Date: 2013-05-01
ZTE INTELLIGENT IOT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For roadside units, if the battery power warning bit is set too low, the on-board unit battery will be replaced in advance, resulting in waste; if the battery power warning bit is set on the high side, the on-board unit battery cannot be replaced in time, affecting normal transactions

Method used

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  • Method and system for measuring battery capacity of on-board units
  • Method and system for measuring battery capacity of on-board units
  • Method and system for measuring battery capacity of on-board units

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Embodiment Construction

[0027] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0028] The core idea of ​​the present invention is: obtain the critical voltage of the pre-set number of vehicle-mounted units; select the maximum value among the critical voltages of all vehicle-mounted units as the official critical voltage of the vehicle-mounted unit; measure the battery power of the vehicle-mounted unit according to the official critical voltage. The critical voltage of the battery of the vehicle-mounted unit measured according to the method of the invention has high accuracy, which avoids waste caused by premature replacement of the battery of the vehicle-mounted unit or influence on normal transactions caused by replacement too late.

[0029] In the embodiment of the present invention, the setting of the critical voltage is a separate detection process, and the setting environment can be selected in a relativ...

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Abstract

The invention discloses a method and a system for measuring the battery capacity of on-board units. The method comprises the following steps of: acquiring critical voltages of a preset number of on-board units; selecting a maximum critical voltage in the critical voltages of all on-board units as a formal critical voltage of the on-board units; and measuring the battery capacity of the on-board units according to the formal critical voltage. The accuracy of measuring the battery capacity of the on-board units is high, and waste due to too early battery replacement is avoided or normal transaction can be prevented from being influenced due to too late battery replacement.

Description

technical field [0001] The invention belongs to the technical field of Electronic Toll Collection (ETC), and in particular relates to a method and system for measuring the battery power of a vehicle-mounted unit. Background technique [0002] The national standard of Electronic Toll Collection (ETC) is a part of the equipment specification in the network toll collection technical standard of the Ministry of Communications, and it is a technical standard applied to expressway toll collection to realize non-stop toll collection. The standard stipulates two equipment specifications, On Board Unit (OBU) and Road Sensor Unit (RSU), and specifies the short-range communication protocol (Dedicated Short Range Communication, DSRC). Wherein the roadside unit is set in the toll lane. The vehicle-mounted unit is installed inside the vehicle, and generally adopts a double-chip electronic label. When the car passes through the toll booth, through the microwave dedicated short-range comm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/36
Inventor 李龙高燕
Owner ZTE INTELLIGENT IOT TECH
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