CN115001888A - Intelligent background music system based on ultra-wideband indoor positioning technology - Google Patents
Intelligent background music system based on ultra-wideband indoor positioning technology Download PDFInfo
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- CN115001888A CN115001888A CN202210594200.9A CN202210594200A CN115001888A CN 115001888 A CN115001888 A CN 115001888A CN 202210594200 A CN202210594200 A CN 202210594200A CN 115001888 A CN115001888 A CN 115001888A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2803—Home automation networks
- H04L12/2816—Controlling appliance services of a home automation network by calling their functionalities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/023—Services making use of location information using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/029—Location-based management or tracking services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/33—Services specially adapted for particular environments, situations or purposes for indoor environments, e.g. buildings
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2803—Home automation networks
- H04L2012/2847—Home automation networks characterised by the type of home appliance used
- H04L2012/2849—Audio/video appliances
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/2803—Home automation networks
- H04L2012/2847—Home automation networks characterised by the type of home appliance used
- H04L2012/285—Generic home appliances, e.g. refrigerators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention discloses an intelligent background music system based on an ultra-wideband indoor positioning technology, which comprises an ultra-wideband indoor positioning module, a background music module and a background music module, wherein the ultra-wideband indoor positioning module is used for determining the position information of a user according to the ultra-wideband indoor positioning technology and generating a moving route according to a time period and the position of the user; the playing equipment selection module is used for selecting a music playing equipment set to be controlled according to the position and the moving route acquired by the indoor positioning module; the music control module is used for acquiring the music playing device set selected by the selection module and cooperatively controlling the music playing device set, wherein the music playing device set comprises pause, playing, volume increasing, volume decreasing, previous music and next music; the terminal control module is used for manually controlling the music playing equipment to play on the terminal equipment by a user; the playing device distribution module is used for installing different numbers of music playing devices in different rooms. The invention realizes high-precision indoor positioning, synchronous music following playing and intelligent control of household equipment.
Description
Technical Field
The invention relates to the field of intelligent music control, in particular to an intelligent background music system based on an ultra-wideband indoor positioning technology.
Background
In recent years, more and more wearing devices such as mobile phones and bracelets are provided with ultra-wideband chips, and the application scenes of the ultra-wideband technology will increase accordingly. In the past, the internet of things smart home equipment generally needs to be matched with a control panel to interact with a user, or remote control is carried out through mobile phone application, such as a smart lamp, a smart air conditioner and a smart sound box. These solutions enable device networking and simplify the use steps, but are not intelligent enough and still require active operation by the user.
In an outdoor environment, both the GPS positioning system and the beidou satellite navigation system can provide good positioning services, but it is difficult to apply them to high-precision indoor positioning. Therefore, a reliable indoor positioning solution is needed to achieve high accuracy indoor positioning. In recent years, most of indoor positioning products appearing in the market are applied to the field of indoor navigation, and the use scenes of the indoor positioning products are large public places such as hospitals, hotels, shopping centers and the like. The common characteristic of the scenes is that the area is large, high positioning precision is not needed when indoor navigation is achieved, and only the direction is needed to be indicated. There are many kinds of indoor positioning technologies, such as positioning implemented by technologies such as Wi-Fi, bluetooth, ZigBee, RFID, infrared, and ultrasonic, and due to the influence of their respective technical characteristics, the comprehensive positioning performance of these indoor positioning technologies is not high.
Disclosure of Invention
The invention provides an intelligent background music system based on an ultra-wideband indoor positioning technology, which aims to overcome the technical problems.
An intelligent background music system based on ultra-wideband indoor positioning technology comprises an ultra-wideband indoor positioning module, a playing device selection module, a music control module, a terminal control module and a playing device distribution module,
the ultra-wideband indoor positioning module is used for determining the position of a user, and comprises a positioning base station arranged indoors and a positioning label carried by the user, wherein the positioning base station and the positioning label are in wireless communication through ultra-wideband, the position of the user is calculated according to an ultra-wideband trilateral positioning algorithm, a moving route is generated according to a time period and the position of the user, the moving route is fed back to the playing equipment selection module, when the number of the users is more than one, a moving route set of different users is generated, and the moving route set is fed back to the playing equipment selection module;
the play equipment selection module is used for selecting a music play equipment set to be controlled according to the moving route or the moving route set acquired by the ultra-wideband indoor positioning module, calculating the distance between the user position in the moving route or the moving route set and the music play equipment, and storing the serial number of the music play equipment in the music play equipment set when the distance is smaller than a threshold value;
the music control module is used for acquiring the music playing device set selected by the playing device selection module, cooperatively controlling the music playing device set, and specifically transmitting control instructions of pause, playing, volume increasing, volume decreasing, previous music and next music to all music playing devices in the music playing device set respectively, and the music playing devices execute the control instructions;
the terminal control module is used for manually controlling the music playing equipment to play on the terminal equipment by a user;
the playing device distribution module is used for installing different numbers of music playing devices in different rooms and numbering according to the positions of the music playing devices.
Preferably, the system further comprises an information acquisition module and an environment comfort level control module, wherein the information acquisition module is used for installing a temperature sensor, a humidity sensor and an illumination intensity sensor indoors and respectively acquiring data of the temperature sensor, the humidity sensor and the illumination intensity sensor, and the environment comfort level control module is used for intelligently controlling the air conditioner and the light according to the sensor data and the user position.
Preferably, the cooperatively controlling the music playing device set further includes comparing the music playing device sets in adjacent time periods, and when the music playing device in the previous period does not appear in the music playing device set in the next period, gradually turning down the volume of the music playing device until the playing is suspended, and when the music playing device in the next period does not appear in the music playing device set in the previous period, gradually turning up the volume of the music playing device.
The invention provides an intelligent background music system based on an ultra-wideband indoor positioning technology, which realizes high-precision indoor positioning, synchronous music following playing and intelligent control of household equipment.
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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on the drawings without inventive labor.
FIG. 1 is a block diagram of an intelligent background music system of the present invention;
FIG. 2 is a TWR ranging diagram of the present invention;
FIG. 3 is a schematic diagram of a trilateration algorithm of the present invention;
fig. 4 is a schematic diagram of the positioning module base station arrangement of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a structural diagram of an intelligent background music system according to the present invention, and as shown in fig. 1, the method of this embodiment may include:
an intelligent background music system based on an ultra-wideband indoor positioning technology comprises an ultra-wideband indoor positioning module, a playing device selection module, a music control module, a terminal control module and a playing device distribution module.
The ultra-wideband indoor positioning module is used for determining the position of a user, and comprises a positioning base station arranged indoors and a positioning label carried by the user, wherein the positioning base station and the positioning label are in wireless communication through an ultra-wideband, the position of the user is calculated according to an ultra-wideband trilateral positioning algorithm, a moving route is generated according to a time period and the position of the user, the moving route is fed back to the playing equipment selection module, when the number of the users is more than one, a moving route set of different users is generated, and the moving route set is fed back to the playing equipment selection module.
Ultra Wideband (UWB) is a wireless carrier communication technology. Based on the ultra-wideband technology, the indoor positioning with high precision can be realized, and the method has the remarkable advantages of wide positioning range, strong penetration capacity, high positioning speed, high multipath resolution, low transmitting power, high confidentiality and the like. The ultra-wideband indoor positioning module consists of a plurality of indoor positioning base stations and positioning labels, the core of the ultra-wideband indoor positioning module is a DWM1000 ultra-wideband radio frequency chip, and indoor positioning is realized by adopting a Two-Way-Ranging algorithm (Two-Way-Ranging) and a trilateral positioning algorithm (TOA).
Two-way distance measurement, also called TWR, is a distance measurement method based on UWB (ultra Wide band), and distance measurement is an important step before positioning, and the object can be positioned by calculation only when distance measurement values among a plurality of UWB modules are available. The principle is as follows:
when ranging starts, the node A sends out a ranging data packet 1, the node B returns a response after receiving the ranging data packet, the response comprises ACK1+ the ranging data packet 2, and the time required by the node B from receiving the ranging data packet to responding is T 2 The time required for the node A to receive the data packet from the transmission of the data packet is T 1 The time required for node A to send ACK2 to node B again is T 4 The time required for the node B to receive the ACK2 again is T 5 And after receiving the response, the node A carries out resolving, namely finishing one-time ranging. Both node a and node B will timestamp data when transmitting and receiving itRecording, subtracting the time stamp after the data packet exchange to obtain the transmission time difference, namely the time of flight (TOF) with the time of flight, and multiplying the time of flight by the speed of light c to obtain the distance between the node A and the node B. The schematic diagram of TWR ranging is shown in fig. 2.
From the schematic diagram, we can obtain:
T 1 ＝2*TOF+T 2 (1)
T 5 ＝2*TOF+T 4 (2)
T 1 +T 4 ＝T 2 +T 5 (3)
the formula is arranged to obtain:
finally, multiplying TOF by c (speed of light) to obtain the distance between two nodes.
The ultra-wideband trilateral positioning algorithm can realize positioning only by three base stations at least. At present, in a plurality of positioning technologies, a trilateral positioning algorithm based on arrival time not only has high positioning accuracy, but also has the characteristics of low cost, high real-time performance and the like, and the principle is as follows.
Three positioning base stations and one positioning tag are arranged at the same height, the base stations are not collinear, and the distances from the base stations to the tag X are obtained through TWR (the TWR ranging principle is explained above). And drawing a circle by taking the base station as a circle center and the ranging value as a radius, fitting and intersecting the three circles at one point, namely the positioning position of the label X, namely the positioning coordinate. The schematic diagram of the algorithm is shown in FIG. 3, wherein 1, 2, and 3 respectively represent three circles, r 1 、r 2 、r 3 Respectively representing the radii of the three circles.
After data such as distance values and base station coordinates are obtained, calculation can be started, and standard equations of three circles are listed according to the data, and the equations are as follows.
And (5) carrying out linearization after the equations (5), (6) and (7) are combined, and solving to obtain a linear equation set, namely calculating the two-dimensional coordinate of the label X.
In this embodiment, a mode of three base stations and one tag is adopted, where a base station a is a main base station, and B and C base stations are auxiliary base stations. During positioning, the A base station is connected with the B base station and the C base station firstly, a positioning command is sent, then each positioning base station is exchanged with a positioning label respectively, the distance between the positioning base stations is measured, then the B base station and the C base station send distance data to the A base station, the A base station generates positioning data after analyzing and calculating, and finally the positioning data is sent to the ultra-wideband indoor positioning module through the ZigBee wireless transmission module. The positioning module base station is schematically arranged, as shown in fig. 4.
And the main base station enters a ranging mode after receiving the setting information of the ultra-wideband indoor positioning module and the ranging starting instruction. The master base station will first send a packet (Inform) to the location tag, start receiving, and wait for the tag response (Poll). After receiving the Poll packet, sending a Resp packet according to the set delay, and then starting receiving. After the main base station successfully receives the Final packet sent by the positioning label, the main base station can sequentially send distance loopback Request packets (Request) to the auxiliary base station, and then starts receiving to wait for Reply packets sent by the auxiliary base station. And resolving after receiving the Reply packet of the auxiliary base station to obtain the ranging value of the auxiliary base station at this time. And after the main base station acquires all the ranging values of the auxiliary base stations, judging the validity of the ranging values, and if the ranging values are valid, resolving the coordinates of the positioning tag according to the ranging values and the base station coordinates, namely completing one-time positioning. And finally, the main base station sends the positioning coordinates to the ultra-wideband indoor positioning module through the ZigBee wireless communication module.
The secondary base station is in a monitoring state after being electrified, and performs different actions according to different received command packets. And when the secondary base station receives the Inform packet sent by the main base station, the secondary base station enters a positioning mode and starts to wait for receiving a Poll packet sent by the label. And after receiving the Poll packet, the secondary base station sends a Resp packet according to the set delay time and waits for receiving a Final packet sent by the label to calculate the ranging value. After the ranging value is calculated, a Request packet sent by the main base station is waited to return a Reply packet of the ranging value. A plurality of ultra-wideband positioning base stations are arranged around each room to improve the positioning accuracy. Normally, at least 3 base stations are arranged in each room, and less than 3 toilets or narrow corridors with small area can be arranged.
The playing device selection module is used for selecting a music playing device set to be controlled according to the moving route or the moving route set collected by the ultra-wideband indoor positioning module, calculating the distance between the user position in the moving route or the moving route set and the music playing device, and storing the serial number of the music playing device in the music playing device set when the distance is smaller than a threshold value.
The music control module is used for acquiring the music playing device set selected by the playing device selection module, cooperatively controlling the music playing device set, and specifically transmitting control instructions of pause, playing, volume increasing, volume decreasing, previous music and next music to all music playing devices in the music playing device set respectively, and the music playing devices execute the control instructions; the cooperative control of the music playing device set further includes comparing music playing device sets in adjacent time periods, when the music playing device in the previous period does not appear in the music playing device set in the next period, gradually turning down the volume of the music playing device until the playing is suspended, and when the music playing device in the next period does not appear in the music playing device set in the previous period, gradually turning up the volume of the music playing device.
The terminal control module is used for manually controlling the music playing equipment to play on the terminal equipment by a user;
the playing device distribution module is used for installing different numbers of music playing devices in different rooms and numbering according to the positions of the music playing devices. There is not necessarily only one loudspeaker in a room, and the system may control a plurality of loudspeakers in the room. For example, in home decoration, a plurality of ceiling-mounted sound boxes are often installed in one room. When the number of the sound boxes is enough, music following can be realized, and the user experiences that music is always followed around the user instead of being transmitted from one place. So the system controls m sound boxes of n rooms, and m > n, rather than simply controlling the sound boxes of different rooms to work.
The system further comprises an information acquisition module and an environment comfort level control module, wherein the information acquisition module is used for installing a temperature sensor, a humidity sensor and an illumination intensity sensor indoors and respectively acquiring data of the temperature sensor, the humidity sensor and the illumination intensity sensor, and the environment comfort level control module is used for intelligently controlling the air conditioner and the light according to the sensor data and the user position. In this embodiment, a user does not need to manually control home equipment, and the system can intelligently control the cooperative work of the lamps, the air conditioners and the sound boxes of each room according to the real-time position, the illumination intensity and the temperature and humidity information of the user, for example, when the indoor temperature is too high, the air conditioners are automatically controlled to realize the temperature regulation; when the indoor humidity is too high, the dehumidifier is driven to perform dehumidification; when the indoor humidity is too low, the humidifier is driven to perform dehumidification until the indoor humidity is kept within a comfortable range. The system can be applied to families and is used for realizing synchronous following of family members during music playing and realizing smart home.
The beneficial effects of the whole are as follows: the invention provides an intelligent background music system based on an ultra-wideband indoor positioning technology, which realizes high-precision indoor positioning, synchronous music following playing and intelligent control of household equipment.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (3)
1. An intelligent background music system based on ultra wide band indoor positioning technology is characterized by comprising an ultra wide band indoor positioning module, a playing device selection module, a music control module, a terminal control module and a playing device distribution module,
the ultra-wideband indoor positioning module is used for determining the position of a user, and comprises a positioning base station arranged indoors and a positioning label carried by the user, wherein the positioning base station and the positioning label are in wireless communication through ultra-wideband, the position of the user is calculated according to an ultra-wideband trilateral positioning algorithm, a moving route is generated according to a time period and the position of the user, the moving route is fed back to the playing equipment selection module, when the number of the users is more than one, a moving route set of different users is generated, and the moving route set is fed back to the playing equipment selection module;
the play equipment selection module is used for selecting a music play equipment set to be controlled according to the moving route or the moving route set acquired by the ultra-wideband indoor positioning module, calculating the distance between the user position in the moving route or the moving route set and the music play equipment, and storing the serial number of the music play equipment in the music play equipment set when the distance is smaller than a threshold value;
the music control module is used for acquiring the music playing device set selected by the playing device selection module, cooperatively controlling the music playing device set, and specifically transmitting control instructions of pause, playing, volume increasing, volume decreasing, previous music and next music to all music playing devices in the music playing device set respectively, and the music playing devices execute the control instructions;
the terminal control module is used for manually controlling the music playing equipment to play on the terminal equipment by a user;
the playing device distribution module is used for installing different numbers of music playing devices in different rooms and numbering according to the positions of the music playing devices.
2. The intelligent background music system based on the ultra-wideband indoor positioning technology is characterized by further comprising an information acquisition module and an environment comfort level control module, wherein the information acquisition module is used for installing a temperature sensor, a humidity sensor and an illumination intensity sensor indoors and respectively acquiring data of the temperature sensor, the humidity sensor and the illumination intensity sensor, and the environment comfort level control module is used for intelligently controlling an air conditioner and light according to the sensor data and the user position.
3. The system of claim 1, wherein the cooperative controlling of the music playing device set further comprises comparing the music playing device sets in adjacent time periods, and when a music playing device in a previous time period is not present in a music playing device set in a subsequent time period, gradually turning down the volume of the music playing device until the music playing is paused, and when a music playing device in a subsequent time period is not present in a music playing device set in a previous time period, gradually turning up the volume of the music playing device.
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| CN105652704A (en) * | 2014-12-01 | 2016-06-08 | 青岛海尔智能技术研发有限公司 | Playing control method for household background music |
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