Vehicle carried device for measuring running distance

Abstract

The invention provides a vehicle distance measuring device (1) having simple structure and low production cost and able to minimize measuring error, which includes: GPS receiver (2) for receiving GPS signal to calculate vehicle instantaneous speed; storage part (2) for storing the instantaneous speed calculated by the GPS receiver at intervals of a predetermined time; distance operation unit (controller (3)) for calculating operating range based on the instantaneous speed and predetermined time stored in the storage part (2). The vehicle operating range is calculated by multiplying the instantaneous speed obtained based on GPS signal and time interval of GPS signal. By employing the functions of the device (1), vehicle information including average oil consumption and content of oil tank is input form input part (5), and then endurance distance can be calculated by the controller, and a buzzer (6) can give an alert as the oil is lower than a predetermined value.

Description

technical field [0001] The present invention relates to a vehicle-mounted travel distance measuring device, particularly a vehicle-mounted travel distance measurement device using a GPS system built in a radar detector. Background technique [0002] Conventionally, a vehicle-mounted mileage meter (trip meter) has been used to measure the distance traveled by a vehicle. The mileage table calculates the mileage of the vehicle based on the outer diameter and rotational speed of the tire. [0003] However, in the above-mentioned mileage table, when the outer diameter of the tire changes due to wear or the like, the mileage meter cannot cope with this change, so there is a problem that errors occur in the calculated mileage. [0004] Therefore, in order to solve this problem, for example, Patent Document 1 proposes a vehicle mileage measuring device which, when obtaining the mileage using information from the axle tachometer of the vehicle, combines the differential value of the...

AI Technical Summary

Problems solved by technology

[0008] However, in the travel distance measuring device described in Patent Document 1, it is necessary to install an acceleration sensor for measuring the actual acceleration of the vehicle, so there is a problem that the structure of the device becomes complicated and the cost of the device increases.

[0009] In addition, since the travel distance measuring device described in Patent Document 2 must also be equipped with a device for detecting vehicle speed pulses such as a detector and a pulse coefficient calculation device for calculating a pulse distance coefficient, the structure of the device becomes complicated, and at the same time The problem of rising equipment costs

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