CN103776460A

CN103776460A - Voice broadcasting method of navigation system

Info

Publication number: CN103776460A
Application number: CN201410039973.6A
Authority: CN
Inventors: 张华恩; 吕烨
Original assignee: Shanghai OnStar Telematics Co Ltd
Current assignee: Shanghai OnStar Telematics Co Ltd
Priority date: 2014-01-27
Filing date: 2014-01-27
Publication date: 2014-05-07
Anticipated expiration: 2034-01-27
Also published as: CN103776460B

Abstract

The invention discloses a voice broadcasting method of a navigation system. The voice broadcasting method comprises the following steps: acquiring the current position, direction and speed of a vehicle by virtue of the navigation system; predicting the time t for the vehicle to arrive a front second crossing according to the current position, direction and speed of the vehicle, wherein t=d2/v, d2 is the distance from the current position of the vehicle to the second crossing, and v is the current speed of the vehicle; skipping the voice information broadcast of a first crossing and the voice information broadcast of all crossings before the first crossing if (t-t1-t2) is less than a preset threshold value t0, and beginning to broadcast the voice information from the second crossing; t1 is the voice information broadcast time duration of the first crossing, and t2 is the voice information broadcast time duration of the second crossing. By adopting the voice broadcasting method of the navigation system, the problems such as confusion or misjudgment caused by the delay of command transmission and broadcast in the application process of a navigation device can be avoided.

Description

A kind of voice broadcast method of navigational system

Technical field

The present invention relates to a kind of voice broadcast disposal route, relate in particular to a kind of voice broadcast method of navigational system.

Background technology

A FAQs of Web vehicle navigational system is: when request path calculates, vehicle is at the three unities, in the time that good path has issued, vehicle is in another place, now, before possibility, several voice are all out-of-date, are no longer applicable to reporting, therefore need to provide the broadcasting method of an initial speech, judge which voice broadcast can skip.

Summary of the invention

Technical matters to be solved by this invention is to provide the broadcasting method of initial speech in a kind of automobile navigation, can skip and crosses crossing or easily obscure the speech play at crossing according to vehicle current location.

The present invention is the voice broadcast method that solves the problems of the technologies described above the technical scheme adopting and be to provide a kind of navigational system, comprises the steps: that navigational system obtains position, direction and the speed when vehicle in front; According to arriving the time t at second crossing, front of travelling, wherein t=d when position, direction and the prediction of speed of vehicle in front when vehicle in front ₂/ v, described d ₂for the distance at current vehicle location to the second crossing, described v is current car speed; If t-t ₁-t ₂be less than predetermined threshold value t ₀, skip the voice messaging report at all crossings before of first crossing and this first crossing, play voice messaging since second crossing; Described t ₁for first crossing voice messaging reproduction time length, described t ₂be second crossing voice messaging reproduction time length.

The voice broadcast method of above-mentioned navigational system, wherein, also comprise the steps: according to judging the rear in current vehicle location, position at which crossing to be reported when position and the direction of vehicle in front, and these crossings to be reported are labeled as to " out-of-date crossing ".

The voice broadcast method of above-mentioned navigational system, wherein, also comprises the steps: if t-t ₁-t ₂be less than predetermined threshold value t ₀, first crossing is labeled as to " easily obscuring crossing ".

The voice broadcast method of above-mentioned navigational system, wherein, described position, direction and speed when vehicle in front is obtained by GPS, gyroscope, velocity pulse or GPRS.

The voice broadcast method of above-mentioned navigational system, wherein, described predetermined threshold value t ₀it is 2～5 seconds.

The present invention contrasts prior art following beneficial effect: the voice broadcast method of navigational system provided by the invention, according to position, direction and speed when vehicle in front, whether next crossing voice of calculating broadcasting can cause is obscured, those out-of-date intersection informations in list to be reported voice and the intersection information of easily obscuring are skipped, directly report next phonetic order, the problem of obscuring or judging by accident of having avoided user to cause due to command, report delay in use guider process.

Accompanying drawing explanation

Fig. 1 is the report process flow diagram of initial speech in the navigational system in the embodiment of the present invention;

Fig. 2 is the schematic diagram of the initial speech easily obscured of skipping in the embodiment of the present invention.

Embodiment

Below in conjunction with drawings and Examples, the invention will be further described.

Fig. 1 is the report process flow diagram of initial speech in the navigational system in the embodiment of the present invention.

Refer to Fig. 1, in navigational system provided by the invention, the report step of initial speech is as follows:

Step S201, navigational system is obtained when the position of vehicle in front, direction and speed; Navigational system can be passed through GPS or other auxiliary locators, as gyroscope, velocity pulse, GPRS auxiliary positioning etc., obtains position, direction and speed when vehicle in front.

Step S202, according to arriving the time t at second crossing, front of travelling, wherein t=d when position, direction and the prediction of speed of vehicle in front when vehicle in front ₂/ v, described d ₂for the distance at current vehicle location to the second crossing, described v is current car speed;

Step S203, if t-t ₁-t ₂be less than predetermined threshold value t ₀, skip the voice messaging report at all crossings before of first crossing and this first crossing, play voice messaging since second crossing; Described t ₁for first crossing voice messaging reproduction time length, described t ₂be second crossing voice messaging reproduction time length.

In navigational system, inappropriate initial speech report information is divided into 2 kinds, out-of-date crossing voice messaging and the crossing voice messaging of easily obscuring, so-called out-of-date crossing voice messaging is easy to judgement, be exactly according to current vehicle heading, those crossings that relatively current vehicle location has been crossed, and these crossings to be reported are labeled as to " out-of-date crossing ", and the crossing voice messaging of easily obscuring, that those are by out-of-date, and voice messaging can mislead user's after reporting, as shown in Figure 1, arrow is the programme path of vehicle, there are voice " craspedodrome " at A place, there are voice " right-hand rotation " at B place, in the time that vehicle approaches A crossing very much, if still will report " craspedodrome ", need the reaction time owing to reporting delay and user, can cause user in fact to cross A, when approaching B, just hear these voice, thereby cause obscuring or judging by accident of user, like this, just whether need to screen next crossing " easily obscuring ", in this way, next crossing is labeled as to " easily obscuring crossing ", " out-of-date crossing " and " easily obscuring crossing " skipped, report next phonetic order.

Above-mentioned algorithm quantitative test is as follows: please continue referring to Fig. 2, square frame is vehicle, northwards travels, and the speed of a motor vehicle is v.The distance of vehicle distances crossing A is d ₁, the distance of vehicle distances crossing A is d ₂.Establish voice " the front d that reports A crossing simultaneously ₁the rice craspedodrome that keeps left " the time span of voice are t ₁, the time span of establishing the voice of the voice " right-hand rotation of front x rice " of reporting B crossing is t ₂.So, after reporting continuously the voice at A crossing and the voice at B crossing, the time that residue arrives B crossing is d ₂/ v-t ₁-t ₂.Predetermined threshold value t ₀scope be 2～5 seconds, consider that common people's drive reaction is at 3 seconds, predetermined threshold value t ₀preferably get 3 seconds, therefore, if d ₂/ v-t ₁-t ₂<3 second, think that the voice at A crossing will play interference effect, A crossing belongs to " easily obscuring crossing ", its voice " front d ₁the rice craspedodrome that keeps left " should be skipped.

In sum, the voice broadcast method of the navigational system that the embodiment of the present invention provides, those out-of-date intersection informations in list to be reported voice and the intersection information of easily obscuring are skipped, directly report next phonetic order, avoided user use guider cross kind in due to command, report and postpone the problem obscuring or judge by accident that causes.

Although the present invention discloses as above with preferred embodiment; so it is not in order to limit the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when doing a little modification and perfect, therefore protection scope of the present invention is worked as with being as the criterion that claims were defined.

Claims

1. A voice broadcast method of a navigation system, characterized in that, comprising the steps:

The navigation system obtains the current position, direction and speed of the vehicle;

According to the position, direction and speed of the current vehicle, predict the time t when the current vehicle reaches the second intersection ahead, where t=d ₂ /v, where d ₂ is the distance from the current vehicle position to the second intersection, and v is the current vehicle speed;

If tt ₁ -t ₂ is less than the preset threshold t ₀ , then skip the broadcast of voice information at the first intersection and all intersections before the first intersection, and start playing voice information from the second intersection; the t ₁ is the first The playing time length of the voice information at one intersection, and the _t2 is the playing time length of the voice information at the second intersection.

2. the voice broadcasting method of navigation system as claimed in claim 1, is characterized in that, also comprises the steps: according to the position of current vehicle and direction judge the position of which crossing to be broadcasted is in the rear of current vehicle position, and These junctions to be announced are marked as "obsolete junctions".

3. The voice broadcasting method of a navigation system as claimed in claim 1, further comprising the steps of: if tt ₁ -t ₂ is less than a preset threshold t ₀ , then the first intersection is marked as "confused intersection ".

4. the voice broadcasting method of navigation system as claimed in claim 1, is characterized in that, the position, direction and speed of described current vehicle are obtained by GPS, gyroscope, velocity pulse or GPRS.

5. The voice broadcasting method of the navigation system according to claim 1, wherein the preset threshold _t0 is 2 to 5 seconds.