WO2018209467A1

WO2018209467A1 - Position detection method and system

Info

Publication number: WO2018209467A1
Application number: PCT/CN2017/084269
Authority: WO
Inventors: 李卓希
Original assignee: 深圳市卓希科技有限公司
Priority date: 2017-05-15
Filing date: 2017-05-15
Publication date: 2018-11-22

Abstract

Disclosed is a position detection method, comprising: step S101, instructing a plurality of speakers to send an acoustic prompt signal to a mobile terminal and a processing device according to a time rule or an intensity rule; step S102, the mobile terminal acquiring detection information, concerning the time rule or the intensity rule, in the acoustic prompt signal, and accordingly transmitting a message signal containing the detection information to the processing device; and step S103, the processing device acquiring the position information concerning the mobile terminal on the basis of the message signal and related information concerning the speakers. Further disclosed is a position detection system. The method above is a low-cost and efficient position detection method.

Description

Position detection method and system

Technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a location detection method and system.

Background technique

With the development of wireless communication technology, mobile terminals such as mobile phones have entered all aspects of people's lives and work. Different forms of wireless communication networks such as wifi, GSM or CDMA have been widely used in different office and living places. Users can implement online mobile operations such as mobile communication or mobile payment by connecting mobile terminals to corresponding wireless communication networks. The popularity has greatly facilitated people's lives and work. In particular, the user usually uses a mobile terminal to navigate while the vehicle is driving. Due to the complexity of the internal space structure of the vehicle, the user may miss the mobile terminal inside the vehicle or the user needs to determine whether or not he or she carries the mobile terminal into the vehicle. In the above case, the location detection of the mobile terminal is required. At present, in view of the characteristics that the mobile terminal uses radio waves for communication, in order to perform positioning and tracking on the mobile terminal, a corresponding radio wave monitoring device can be installed inside the vehicle, and the radio wave monitoring device acquires radio wave signals transmitted by the internal antenna of the mobile terminal. Combined with the triangulation method or the radio wave signal strength measurement method, the position of the mobile terminal in the vehicle can be determined. However, since the coverage of the radio wave signal of the antenna of the mobile terminal is limited, and if there are multiple mobile terminals inside the vehicle, the radio waves transmitted by the respective antennas of different mobile terminals may overlap each other, which may cause the radio wave monitoring. The device cannot obtain the relevant radio wave signal information of the target mobile terminal. In order to further improve the positioning accuracy of the mobile terminal, it may be necessary to install multiple radio wave monitoring devices inside the vehicle to perform targeted monitoring on different mobile terminals, which obviously improves the mobile terminal. The cost and efficiency of location detection.

Summary of the invention

In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is that when determining the location information of the mobile terminal inside the vehicle in the prior art, the radio wave monitoring device installed inside the vehicle acquires the antenna transmission of the mobile terminal. Radio wave information to calculate the location of the mobile terminal, but in the above manner, the radio wave signal transmitted by the mobile terminal is weak or there are multiple inside the vehicle In the case of a mobile terminal, the location information of the target mobile terminal cannot be accurately obtained, resulting in an increase in the positioning cost of the mobile terminal and a decrease in positioning efficiency. SUMMARY OF THE INVENTION An object of the present invention is to provide a position detecting method and system capable of quickly and accurately acquiring position information of a mobile terminal inside a vehicle without relying on a radio wave signal transmitted from an internal antenna of the mobile terminal.

In order to solve the above technical problem, an embodiment of the present invention provides a location detection method, where the method includes:

S101. Instructing a plurality of speakers to send a prompt sound signal to a mobile terminal and a processing device according to a time rule or an intensity rule;

S102. The mobile terminal acquires detection information about the time rule or the intensity rule in the prompt sound signal, and sends a message signal containing the detection information to the processing device.

S103. The processing device acquires location information of the mobile terminal based on the message signal and related information of the speaker.

Further, in S101, the speaker emits the prompt sound signal based on a control instruction from the processing device, the control command is used to instruct the speaker to perform a sound signal of a corresponding audio data information and/or an audio play mode. Play

Further, in S101, the prompt sound signal can be played in the form of a predetermined time interval or a predetermined sound intensity distribution;

Wherein the prompt sound signal has a specific audio mark as an identity identifier;

Further, in S102, the detection information includes a sound waveform diagram of the prompt sound signal, and a corresponding waveform characteristic parameter;

The waveform characteristic parameter includes a start time, an end time, an intensity amplitude, or a peak-to-valley distribution state of the sound waveform diagram;

Further, in S103, the processing device compares the prompt sound signal between the speaker to the mobile terminal, and the respective sound waveforms between the speaker and the processing device to calculate The location information of the mobile terminal.

Correspondingly, an embodiment of the present invention further provides a location detection system, characterized in that the system comprises a processing device, a mobile terminal and a speaker;

The processing device is configured to instruct a plurality of the speakers to issue a prompt sound signal to the mobile terminal and the processing device according to a time rule or an intensity rule;

The mobile terminal can acquire detection information about the time rule or intensity law in the prompt sound signal, and send a message signal containing the detection information to the processing device;

The processing device is further configured to acquire location information of the mobile terminal based on the message signal and related information of the speaker;

Further, the processing unit is capable of transmitting a control instruction to the speaker to cause the processing unit to emit the prompt sound signal;

The control instruction is used to instruct the speaker to perform sound signal playback of corresponding audio data information and/or audio play mode;

Further, the speaker can play the prompt sound signal in the form of a predetermined time interval or a predetermined sound intensity distribution;

Further, the mobile terminal is capable of extracting a sound waveform diagram of the prompt sound signal and a corresponding waveform feature parameter as the detection information;

Further, the processing device is further capable of comparing the cue sound signal between the speaker to the mobile terminal and a sound waveform of the speaker to the processing device to calculate the movement Location information of the terminal.

The present invention provides a position detecting method and system by using the above technical solution to indicate that a plurality of speakers emit a prompt sound signal to a mobile terminal and a processing device according to a time rule or an intensity rule, and acquire the prompt sound signal through the mobile terminal. And detecting information about the time rule or the intensity law, so as to send a message signal containing the detection information to the processing device, so that the prompt sound signal value can be obtained from the speaker to the processing device, and the speaker to the mobile terminal a respective sound waveform diagram; in addition, the method and system are further capable of acquiring location information of the mobile terminal according to the message signal and related information of the speaker, thereby providing a radio wave signal that does not depend on the internal antenna of the mobile terminal A method and system capable of quickly and accurately obtaining location information of a mobile terminal inside a vehicle.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

1 is a schematic flow chart of a location detecting method according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a position detecting system according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

FIG. 1 is a schematic flowchart of a method for detecting a location according to an embodiment of the present invention. In the embodiment of the present invention, the method includes:

S101. Instruct the plurality of speakers to emit a prompt sound signal to a mobile terminal and a processing device according to a time rule or an intensity rule.

In particular, the position detection method is based on a cue sound signal emitted by a speaker mounted in a vehicle cabin or other relatively enclosed space to determine the position of the mobile terminal in the vehicle cabin or other relatively enclosed space. Information, and the location information is calculated by a processing device. The mobile terminal and the processing device can perform wireless communication. Preferably, the wireless communication can be Bluetooth communication, short-range field sensing signal NFC communication, or infrared signal communication, etc., thereby implementing the mobile terminal and the processing. The data information between the devices is transmitted interactively; the mobile terminal may be, but is not limited to, a portable electronic device such as a mobile phone, a tablet computer or a wearable electronic device, and the mobile terminal is provided with a first for receiving a prompt sound signal from the speaker a sound receiving unit, after receiving the prompt sound signal of the speaker, the first sound receiving unit transmits the prompt sound signal to a first control unit, and then the first control unit performs calculation and analysis processing on the prompt sound signal . In addition, the first control unit can control the working state of the first communication unit and the first sound receiving unit

The processing device can be, but not limited to, a microcomputer processing device or a central processing unit of the vehicle a sub-processing device; the processing device includes a second communication unit that performs wireless communication with the first communication unit of the mobile terminal to implement interactive transmission of the data information. Accordingly, the first communication unit and the second communication unit may It is a Bluetooth communication module, an NFC module or an infrared signal transmitting/receiving module. Furthermore, the processing unit further includes a second sound signal receiving unit for receiving the prompt sound signal from the speaker, and then the second sound receiving unit transmits the prompt sound signal to a second In the control unit, the second control unit then performs calculation and analysis processing on the prompt sound signal, and further, the second control unit can control the working state of the second communication unit and the second sound receiving unit.

The speaker may be a plurality of speakers disposed inside the cabin, the plurality of speakers preferably being disposed in a distributed manner at different locations inside the cabin and spaced apart from the processing module. The speaker can be, but is not limited to, a buzzer or a speaker, and the speaker can emit an audible sound wave or an ultrasonic wave or the like. Moreover, the speaker further includes a third communication unit and a third storage unit, wherein the third communication unit is capable of performing an interactive transmission of a control instruction with the second communication unit of the processing device, where the third storage unit stores The power amplifying unit of the speaker performs audio data information or an audio playing mode for prompting the sound signal to be played; for example, when the processing device sends a control command to the speaker through the second communication unit, the third communication unit will receive the Control instructions are passed to the third control unit of the speaker, the third control unit performs a decoding operation on the control instruction to obtain a corresponding audio play feature code, and then the third control unit proceeds from the third storage according to the audio play feature code The unit searches for corresponding audio data information and/or audio play mode, and instructs the power amplifying unit to play the related prompt sound signal according to the found audio data information and/or the audio play mode. The audio data information may be sound wave data having a specific audio mark; the audio play mode may be play law data about time or sound intensity during the playing of the prompt sound signal, for example, the play law data about the time. The prompt sound signal can be played at a predetermined time interval, and the play law data about the sound intensity can mean that the prompt sound signal can be played in a predetermined sound intensity distribution, in particular, the predetermined sound intensity distribution can include the The prompt sound signal changes the sound intensity over time, or the prompt sound signal has a specific sound intensity on a particular marked note or audio.

In fact, the processing device may further comprise a human-computer interaction unit through which the user can input corresponding control commands or select a corresponding control menu function to control the speaker implementation. Different prompt sound signal playback functions. Preferably, the human-computer interaction unit can be, but not limited to, a touch-sensitive human-computer interaction unit or a voice-based human-machine interaction unit; correspondingly, the touch-type human-computer interaction unit can be a touch display screen, the voice-type person The machine interaction unit can be a speech recognizer, which can effectively improve the user experience and flexibility of implementing the position detection method by the processing device.

Specifically, after the first sound receiving unit of the mobile terminal receives the prompt sound signal from the speaker, the first control unit performs an analysis and calculation process on the prompt sound signal to acquire detection information about the prompt sound signal. The first sound receiving unit can convert the received prompt sound signal into a pulse current signal, and transmit the pulse current signal to the first control unit; then, the first control unit presses the pulse current signal according to the The distribution of time and/or intensity is converted into a corresponding sound waveform diagram. Since the prompt sound signal has a specific audio mark, the specific audio mark can be used as an identity in the different prompt sound signal, and the specific audio mark is When the first control unit converts into a sound waveform diagram, a corresponding mark is formed on the sound waveform diagram, so that when there are multiple mobile terminals inside the cabin, each mobile terminal can The specific audio tag is used as its own identity, thereby preventing the processing device from recognizing the detection message fed back by different mobile terminals.

The first control unit extracts a corresponding waveform feature parameter from the sound waveform diagram as the detection information, wherein the waveform feature parameter may include a start time, an end time, an intensity amplitude, and/or a peak of the sound waveform map. Valley distribution status, etc. Subsequently, the first control unit uses the sound waveform diagram and the waveform feature parameter as data packets of the message signal, and transmits the data to the processing device via the first communication unit to perform processing of the next step.

Specifically, after receiving the data packet of the message signal, the second communication unit of the processing device transmits the data packet to the second control unit, and the second control unit performs parsing processing on the data packet; The processing device obtains relevant information from the speaker in advance, wherein the related information is preferably an initial sound waveform diagram of the prompt sound signal emitted by the speaker, and a start time, an end time, and an intensity amplitude of the initial sound waveform image. And the peak-to-valley distribution state. Further, The second storage unit in the processing device also stores position distribution information about different speakers inside the cabin, the position distribution information preferably being a relative distance and a relative azimuth between each speaker and the processing device, or each The coordinate value of the speaker in the three-dimensional space coordinate system whose position is the coordinate origin of the processing device.

Preferably, the second control unit of the processing device compares the sound waveform pattern in the message signal with the initial sound waveform of the speaker, and calculates a time delay difference between the sound waveform and the initial sound waveform. The time delay value is used to indicate that the same prompt sound signal sent by the speaker reaches the difference of the propagation time of the mobile terminal and the processing device respectively. Since the processing device has obtained the positional information such as the relative distance between the speaker and the speaker in advance, The second control unit can calculate relative position information between the mobile terminal and the speaker based on a time delay difference between the two sound waveform diagrams and a relative distance between the processing device and the speaker.

Preferably, the second control unit of the processing device can also compare the sound waveform image in the message signal with the initial sound waveform of the speaker with respect to the intensity amplitude, and obtain the intensity amplitude between the two sound waveforms. The difference value is combined with the intensity propagation attenuation law of the prompt sound signal itself to calculate the relative position information between the mobile terminal and the speaker.

Further, the processing device can indicate the location information of the mobile terminal to the user through the display module of the human-machine interaction unit.

It can be seen from the above embodiment that the position detecting method sends a prompting sound signal to a mobile terminal and a processing device according to a time rule or an intensity rule, and acquires the prompt sound signal by the mobile terminal about the time. The detection information of the regularity or the intensity law, thereby transmitting a message signal containing the detection information to the processing device, so that the prompt sound signal value can be obtained between the speaker to the processing device and the speaker to the mobile terminal a sound waveform diagram; in addition, the method is further capable of acquiring location information of the mobile terminal according to the message signal and related information of the speaker, thereby providing a radio wave signal that is not dependent on the internal antenna of the mobile terminal, and can quickly and accurately A method of obtaining location information of a mobile terminal inside a vehicle.

2 is a schematic structural diagram of a position detecting system according to an embodiment of the present invention. In the embodiment of the present invention, the position detecting system can send a prompt sound signal to a mobile terminal and a processing device through a speaker, and based on the prompt sound. Acquiring a difference in sound waveforms between the speaker to the processing device and the speaker to the mobile terminal to obtain location information of the mobile terminal, The speed and accuracy of positioning the mobile terminal inside the vehicle are improved.

The position detection system includes a processing device, a speaker, and a mobile terminal.

The mobile terminal includes a first sound receiving unit, a first control unit, and a first communication unit.

The processing device includes a second sound receiving unit, a second control unit, a second communication unit, and a second storage unit; preferably, the processing device further includes a human-machine interaction unit.

The speaker includes a power amplifying unit, a third control unit, a third communication unit, and a third storage unit.

For the meaning and examples of the terms involved in the embodiment, reference may be made to the corresponding embodiment of FIG. 1. I will not repeat them here.

It can be seen from the above embodiment that the position detecting system sends a prompting sound signal to a mobile terminal and a processing device according to a time rule or an intensity rule by indicating a plurality of speakers, and acquires the prompt sound signal by the mobile terminal about the time. The detection information of the regularity or the intensity law, thereby transmitting a message signal containing the detection information to the processing device, so that the prompt sound signal value can be obtained between the speaker to the processing device and the speaker to the mobile terminal a sound waveform diagram; in addition, the system is capable of acquiring location information of the mobile terminal according to the message signal and related information of the speaker, thereby providing a radio wave signal that is not dependent on the internal antenna of the mobile terminal, and can be quickly and accurately A system for obtaining location information of a mobile terminal inside a vehicle.

One of ordinary skill in the art can understand that all or part of the process of implementing the foregoing embodiments can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium. When executed, the flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

The above disclosure is only a preferred embodiment of the present invention, and of course, the scope of the present invention is not limited thereto, and those skilled in the art can understand all or part of the process of implementing the above embodiments, and according to the present invention. The equivalent changes required are still within the scope of the invention.

Claims

A position detecting method, characterized in that the method comprises:

S101. Instructing a plurality of speakers to send a prompt sound signal to a mobile terminal and a processing device according to a time rule or an intensity rule;

S102. The mobile terminal acquires detection information about the time rule or the intensity rule in the prompt sound signal, and sends a message signal containing the detection information to the processing device.

S103. The processing device acquires location information of the mobile terminal based on the message signal and related information of the speaker.
The method of claim 1 wherein

In S101, the speaker emits the prompt sound signal based on a control instruction from the processing device, the control command being used to instruct the speaker to perform sound signal playback of a corresponding audio data information and/or an audio play mode.
The method of claim 2 wherein:

In S101, the prompt sound signal can be played in the form of a predetermined time interval or a predetermined sound intensity distribution;

Wherein, the prompt sound signal has a specific audio mark as an identity.
The method of claim 1 wherein

In S102, the detection information includes a sound waveform diagram of the prompt sound signal, and corresponding waveform characteristic parameters;

The waveform characteristic parameter includes a start time, an end time, an intensity amplitude, or a peak-valley distribution state of the sound waveform.
The method of claim 1 wherein

In S103, the processing device compares the prompt sound signal between the speaker to the mobile terminal, and a sound waveform of the speaker to the processing device, to Calculating location information of the mobile terminal.
A position detecting system, characterized in that the system comprises a processing device, a mobile terminal and a speaker;

The processing device is configured to instruct a plurality of the speakers to issue a prompt sound signal to the mobile terminal and the processing device according to a time rule or an intensity rule;

The mobile terminal can acquire detection information about the time rule or intensity law in the prompt sound signal, and send a message signal containing the detection information to the processing device;

The processing device is further capable of acquiring location information of the mobile terminal based on the message signal and related information of the speaker.
The system of claim 6 wherein:

The processing unit is capable of transmitting a control command to the speaker to cause the processing unit to emit the prompt sound signal;

The control instruction is used to instruct the speaker to perform sound signal playback of corresponding audio data information and/or audio play mode.
The system of claim 6 wherein:

The speaker can play the prompt sound signal in the form of a predetermined time interval or a predetermined sound intensity distribution;

Wherein, the prompt sound signal has a specific audio mark as an identity.
The system of claim 6 wherein:

The mobile terminal is capable of extracting a sound waveform diagram of the prompt sound signal and a corresponding waveform feature parameter as the detection information;

The waveform characteristic parameter includes a start time, an end time, an intensity amplitude, or a peak-valley distribution state of the sound waveform.
The system of claim 6 wherein:

The processing device is further capable of transmitting the cue sound signal to the speaker to the mobile terminal A comparison is made between respective sound waveforms between the speaker and the processing device to calculate position information of the mobile terminal.