CN107688239B - Projection system for vehicle - Google Patents
Projection system for vehicle Download PDFInfo
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- CN107688239B CN107688239B CN201610636040.4A CN201610636040A CN107688239B CN 107688239 B CN107688239 B CN 107688239B CN 201610636040 A CN201610636040 A CN 201610636040A CN 107688239 B CN107688239 B CN 107688239B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
- G02B2027/0138—Head-up displays characterised by optical features comprising image capture systems, e.g. camera
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0149—Head-up displays characterised by mechanical features
- G02B2027/0161—Head-up displays characterised by mechanical features characterised by the relative positioning of the constitutive elements
- G02B2027/0163—Electric or electronic control thereof
Abstract
The invention relates to a projection system for a vehicle, which comprises a plurality of information collecting devices for outputting a plurality of driving information, a time division multiplexing element with a plurality of wireless transmission modules and a projection mechanism. The time division multiplexing element is wirelessly connected with the information collecting devices, detects wireless transmission requirements transmitted by the information collecting devices, and determines a wireless transmission mode of at least one of the driving information according to a detection result. And the time division multiplexing element generates a layout image according to the plurality of driving information after receiving the plurality of driving information and outputs the layout image. The projection mechanism is wirelessly connected to the time division multiplexing element and is used for projecting the layout image on a piece of glass of the automobile, wherein the layout image comprises the plurality of driving information. Therefore, the information collecting devices can transmit the driving information to the time division multiplexing element through different wireless transmission modules simultaneously so as to carry out high-efficiency wireless transmission and improve the problem of picture delay.
Description
Technical Field
The present invention relates to a projection system, and more particularly, to a projection system for a vehicle, which is applied to an electronic device for a vehicle.
Background
With the development of network information and technology, navigation devices or navigation software used in mobile devices have become almost essential for traveling vehicles. However, the behavior of the driver to look at the navigation information displayed by the navigation device or the navigation software by distracting or turning the head during driving will seriously affect the driving safety and may harm the life safety. In order to reduce the safety hazard caused by the driver needing to watch the road condition and turn around to observe the driving instrument panel or the navigation device, a head-up display capable of displaying on the windshield of the vehicle is introduced in the market, which can display part of the driving information of the driving instrument panel on the windshield by means of projection technology, so that the driver can watch the road condition and part of the driving information of the driving instrument panel through the windshield at the same time.
However, the cost of the head-up display is expensive, and besides a few advanced vehicle types can be built in for use, the head-up display is only equipped in a self-charging manner in the current vehicle, so that the head-up display is difficult to be widely used. In addition, in the prior art, the head-up display cannot display sufficient driving information (such as navigation information displayed by a navigation device or navigation software), and therefore the use will of the driver cannot be enhanced.
Certainly, there is also a navigation aid using a camera, such as taiwan patent publication No. 200848703, which combines a navigation device with a camera to display navigation information in a superimposed manner on a photographed image, so that a driver can observe road conditions and navigation information simultaneously when watching the photographed image. However, as can be seen from the above, the display device cannot display sufficient road condition information, navigation information and driving safety prompting information on the same photographic screen. For example: the driving speed, gear state and gasoline capacity of the automobile are not displayed in the photographic picture, so that the driver still needs to look down at the driving instrument panel to know the driving information.
In view of this, taiwan patent No. I521484 discloses a device capable of simultaneously displaying navigation information and driving safety prompts, wherein the information displayed in the photographing unit, the navigation unit and the driving safety prompting unit is displayed on a single display unit through the operation of the host, so that the display unit can simultaneously display information required by the driver, such as road condition images, navigation information and front vehicle safety distance marks. The driver can obtain sufficient real-time road condition images, navigation information and information related to driving safety on the display unit without watching various driving information at different positions by distraction, so that driving disasters caused by distraction of the driver are reduced, and the driving safety is improved.
In addition, in response to the progress of wireless transmission technology, the above patent can also be realized by using wireless transmission technology. Taiwan patent No. I521484 is taken as an example for explanation: the display unit, the photographing unit, the navigation unit and the audio prompting unit are respectively connected with the host in a wireless mode through a wireless transmission technology, so that the display unit, the photographing unit, the navigation unit, the audio prompting unit and other devices can be respectively arranged at proper positions without being limited by wires, and the display unit, the photographing unit, the navigation unit, the audio prompting unit and other devices have the advantage of being convenient to arrange. However, wireless transmission of these devices is prone to cause a delay in the displayed screen of the display unit. For example, when the photographing unit wirelessly transmits the road condition image to the host, and the navigation unit also wirelessly transmits the navigation information to the host, the host may perform wireless transmission of the navigation information after completing the transmission of the road condition image. After the navigation information is transmitted to the host, the host displays the road condition image and the navigation information in the display unit. Therefore, the frame displayed by the display unit must be displayed after all data is transmitted, which causes a problem of frame delay.
Therefore, there is a need for a vehicular projection system that can improve the picture delay.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a projection system for a vehicle, which can improve the image delay.
Another technical problem to be solved by the present invention is to provide a vehicular projection system capable of generating real-time layout images by using wireless transmission technology, in order to overcome the above-mentioned shortcomings of the prior art.
The technical solution to solve the technical problem of the present invention is to provide a vehicular projection system, which is applied to an automobile, and includes a first information collecting device, a second information collecting device, a Time-Division Multiplexing (TDM) element, and a projection mechanism. The first information collecting device is used for outputting first driving information and a first wireless transmission demand corresponding to the first driving information, and the second information collecting device is used for outputting second driving information and a second wireless transmission demand corresponding to the second driving information. The time division multiplexing element is wirelessly connected with the first information collecting device and the second information collecting device, is used for detecting the first wireless transmission requirement and the second wireless transmission requirement, and determines the wireless transmission mode of at least one of the first driving information and the second driving information according to the detection result; after receiving the first driving information and the second driving information, the time division multiplexing element generates a layout image according to the first driving information and the second driving information and outputs the layout image. The projection mechanism is wirelessly connected with the time division multiplexing element and is used for projecting the layout image on a glass of the automobile; the layout image includes the first driving information and the second driving information.
Preferably, the time division multiplexing element comprises a first storage element, a first wireless transmission module, a second wireless transmission module and a control unit, wherein the first storage element is used for temporarily storing the first driving information and the second driving information; the first wireless transmission module is connected to the first storage element and used for receiving the first driving information or the second driving information by a first wireless transmission technology; the second wireless transmission module is connected with the first storage element and used for receiving the second driving information by a second wireless transmission technology; the control unit is connected to the first storage element, the first wireless transmission module and the second wireless transmission module, and is used for determining a wireless transmission mode of the first driving information and the second driving information according to the sequence of receiving the first wireless transmission requirement and the second wireless transmission requirement, the file attribute of the first driving information corresponding to the first wireless transmission requirement, the file attribute of the second driving information corresponding to the second wireless transmission requirement and the wireless transmission capability information corresponding to the first wireless transmission requirement and the second wireless transmission requirement.
Preferably, when the control unit detects that at least one of the first wireless transmission requirement and the second wireless transmission requirement is received, the control unit determines the number of the received wireless transmission requirements; when the control unit judges that the number of the received wireless transmission demands is one, the control unit assigns an ideal wireless transmission type according to the file attribute corresponding to the first wireless transmission demand or the second wireless transmission demand; when the control unit judges that the number of the received wireless transmission demands is more than one, the control unit determines the transmission orders of the first wireless transmission demands and the second wireless transmission demands according to the time for receiving the first wireless transmission demands and the second wireless transmission demands, and assigns an ideal wireless transmission type according to the file attributes corresponding to the first wireless transmission demands and the second wireless transmission demands.
Preferably, the file attribute corresponding to the first wireless transmission requirement is the file type of the first driving information, and the file attribute corresponding to the second wireless transmission requirement is the file type of the second driving information; when the control unit presets the file type to be the picture type, the ideal wireless transmission type is assigned to be the Wi-Fi wireless transmission module, and when the control unit presets the file type to be the text type, the ideal wireless transmission type is assigned to be the Bluetooth wireless transmission module.
Preferably, after the ideal wireless transmission type is assigned, the control unit assigns an actual wireless transmission type according to the wireless transmission capability information corresponding to at least one of the first wireless transmission requirement and the second wireless transmission requirement, and notifies at least one of the first information collection device and the second information collection device to start wireless transmission.
Preferably, after the time division multiplexing element receives at least one of the first driving information and the second driving information, the control unit detects and determines whether transmission of the first driving information or the second driving information having the best transmission order is completed; when the first driving information or the second driving information is transmitted, the control unit judges whether to change the wireless transmission type of the driving information with the second best transmission order.
Preferably, the first information collecting device comprises a display device, an image capturing device and a third wireless transmission module, wherein the display device is used for displaying driving state information of the automobile; the image capturing device is arranged in the vicinity of the display device and is used for capturing an image corresponding to the driving state information; the third wireless transmission module is connected with the image capturing device and the first wireless transmission module in a wireless manner, and is used for outputting the first wireless transmission requirement and the first driving information to the first wireless transmission module by the first wireless transmission technology; wherein the first driving information is the image.
Preferably, the display device is a driving dashboard of the vehicle, and the driving status information includes a driving speed, a temperature inside the vehicle, a gear status and a gasoline capacity of the vehicle.
Preferably, the second information collecting device comprises a navigation module, a fourth wireless transmission module and a fifth wireless transmission module, wherein the navigation module is used for capturing navigation information; the fourth wireless transmission module is connected to the navigation module and the first wireless transmission module in a wireless manner, and is used for outputting the second wireless transmission requirement and the second driving information to the first wireless transmission module by the first wireless transmission technology; the fifth wireless transmission module is connected with the navigation module and the second wireless transmission module in a wireless manner, and is used for outputting the second wireless transmission requirement and the second driving information to the second wireless transmission module by the second wireless transmission technology; wherein the second driving information is the navigation information.
Preferably, the first wireless transmission module and the fourth wireless transmission module are Wi-Fi wireless transmission modules, and the second wireless transmission module and the fifth wireless transmission module are bluetooth wireless transmission modules.
Preferably, the projection mechanism includes a sixth wireless transmission module, a second storage element and a projection module, the sixth wireless transmission module is wirelessly connected to the time division multiplexing element for receiving the layout image; the second storage element is connected to the sixth wireless transmission module and used for storing the layout image; the projection module is connected to the second storage element and used for projecting the layout image on the glass of the automobile.
The time division multiplexing element of the projection system for the vehicle can determine the transmission orders of the information collecting devices according to the sequence of the wireless transmission demands transmitted by the information collecting devices. Then, according to the file attribute of the driving information to be transmitted and the wireless transmission capability of the plurality of information collecting devices, it can be determined that an appropriate wireless transmission module should be used. Therefore, the information collecting devices can transmit the driving information to the time division multiplexing element through different wireless transmission modules simultaneously so as to carry out high-efficiency wireless transmission. In addition, when a plurality of wireless transmission modules simultaneously carry out wireless transmission and the optimal wireless transmission module is occupied, the vehicular projection system assigns the next best wireless transmission module to carry out wireless transmission, and switches to the optimal wireless transmission module to carry out wireless transmission when the optimal wireless transmission module is not occupied, so that the wireless transmission efficiency can be improved, and a layout image close to real time can be provided for a driver to watch so as to solve the problem of picture delay.
Drawings
FIG. 1 is a block diagram of a preferred embodiment of a projection system for a vehicle according to the present invention.
FIG. 2 is a block diagram of a first information collecting device of the vehicular projection system according to a preferred embodiment of the present invention.
FIG. 3 is a block diagram of a second information collecting device of the vehicular projection system according to a preferred embodiment of the present invention.
FIG. 4 is a block diagram of a third information collecting device of the vehicular projection system according to a preferred embodiment of the present invention.
FIG. 5 is a block diagram of a projection mechanism of the vehicular projection system according to a preferred embodiment of the present invention.
Fig. 6A and 6B are block flow diagrams illustrating operation of a control unit of the vehicular projection system according to a preferred embodiment of the present invention.
FIG. 7 is a schematic view of a layout image provided by the vehicular projection system according to a preferred embodiment of the present invention.
Detailed Description
The invention provides a projection system for a vehicle, which aims to solve the problems in the prior art. Please refer to fig. 1, which is a block diagram illustrating a projection system for a vehicle according to a preferred embodiment of the present invention. The projection system 1 for vehicle of the present invention is disposed in a vehicle (not shown in the figure), and comprises a first information collecting device 11, a second information collecting device 12, a third information collecting device 13, a time division multiplexing element 14 and a projection mechanism 15, wherein the first information collecting device 11 is wirelessly connected to the time division multiplexing element 14, and functions to obtain first driving information M1 and output a first wireless transmission request R1 corresponding to the first driving information M1. The second information collecting device 12 is wirelessly connected to the time division multiplexing element 14, and functions to obtain the second driving information M2 and output a second wireless transmission requirement R2 corresponding to the second driving information M2. Similarly to the first information collecting device 11 and the second information collecting device 12, the third information collecting device 13 is wirelessly connected to the time division multiplexing element 14, functions to obtain the third traveling information M3, and outputs a third wireless transmission request R3 corresponding to the third traveling information M3.
The time division multiplexing element 14 is disposed in the vehicle and is wirelessly connected to the first information collecting device 11, the second information collecting device 12, and the third information collecting device 13, and has three functions: first, it is detected whether the first radio transmission request R1, the second radio transmission request R2 and the third radio transmission request R3 are received every time a first predetermined time period elapses. Secondly, the wireless transmission mode of at least one of the first driving information M1, the second driving information M2 and the third driving information M3 is determined according to the detection result. Third, after receiving the first driving information M1, the second driving information M2, and the third driving information M3, the layout image S can be generated according to the first driving information M1, the second driving information M2, and the third driving information M3, and the layout image S is output to the projection mechanism 15. The projection mechanism 15 is wirelessly connected to the time division multiplexing device 14, and can project a layout image S on the glass 101 of the vehicle, wherein the layout image S includes first driving information M1, second driving information M2, and third driving information M3.
Next, the internal structure of each element will be described in detail. In fig. 1, the time division multiplexing device 14 includes a first storage device 141, a first wireless transmission module 142, a second wireless transmission module 143, a third wireless transmission module 144, and a control unit 145. The first storage element 141 is capable of temporarily storing the first driving information M1, the second driving information M2 and the third driving information M3 therein. The first wireless transmission module 142 is connected to the first storage element 141, and can receive the first driving information M1 or the second driving information M2 by using a first wireless transmission technology. The second wireless transmission module 143 is connected to the first storage element 141, and can receive the second driving information M2 by the second wireless transmission technology. The third wireless transmission module 144 is connected to the first storage element 141, and can receive the third traveling information M3 by the third wireless transmission technology. In the preferred embodiment, the first wireless transmission module 142 is a Wi-Fi wireless transmission module, the second wireless transmission module 143 is a 3G/4G wireless transmission module, and the third wireless transmission module 144 is a bluetooth wireless transmission module.
The control unit 145 is connected to the first storage element 141, the first wireless transmission module 142, the second wireless transmission module 143, and the third wireless transmission module 144, respectively, and the control unit 145 can make different decisions according to actual situations, so that the time division multiplexing element 14 performs different operations. In short, the control unit 145 may determine the wireless transmission modes of the first traveling information M1, the second traveling information M2, and the third traveling information M3 according to the sequence in which the first wireless transmission module 142, the second wireless transmission module 143, and the third wireless transmission module 144 receive the first wireless transmission requirement R1, the second wireless transmission requirement R2, and the third wireless transmission requirement R3, the file attribute of the first traveling information M1, the file attribute of the second traveling information M2, the file attribute of the third traveling information M3, and the wireless transmission capability information of the first wireless transmission module 142 to the third wireless transmission module 144. The operation of which will be described in detail in the following section.
Referring to fig. 1 and fig. 2, fig. 2 is a block diagram of a first information collecting device of a vehicular projection system according to a preferred embodiment of the invention. The first information collecting device 11 includes a display device 111, a first image capturing device 112, and a fourth wireless transmission module 113. The display device 111 is provided in the vehicle and functions to display driving state information of the vehicle. The first image capturing device 112 is disposed adjacent to the display device 111, and is capable of capturing an image corresponding to the driving state information by capturing the image on the display device 111, wherein the image includes the driving state information and is defined as the first driving information M1. The fourth wireless transmission module 113 is connected to the first image capturing device 112 and wirelessly connected to the first wireless transmission module 142, and outputs the first wireless transmission request R1 and the first driving information M1 to the first wireless transmission module 142 by using the first wireless transmission technology. In the preferred embodiment, the display device 111 is a dashboard of an automobile, the driving status information includes information such as driving speed, temperature, gear status and gasoline capacity of the automobile, and the first image capturing device 112 is a camera.
Referring to fig. 1 and fig. 3, fig. 3 is a block diagram of a second information collecting device of a vehicular projection system according to a preferred embodiment of the invention. The second information collecting device 12 includes a navigation module 121, a fifth wireless transmission module 122, a sixth wireless transmission module 123, and a seventh wireless transmission module 124. The navigation module 121 is capable of connecting to the internet and retrieving navigation information of the current location of the vehicle, wherein the navigation information is defined as the second driving information M2. The fifth wireless transmission module 122 is connected to the navigation module 121 and wirelessly connected to the first wireless transmission module 142, and outputs the second wireless transmission request R2 and the second driving information M2 to the first wireless transmission module 142 by using the first wireless transmission technology. The sixth wireless transmission module 123 is connected to the navigation module 121 and wirelessly connected to the second wireless transmission module 143, and outputs the second wireless transmission request R2 and the second driving information M2 to the second wireless transmission module 143 by using the second wireless transmission technology. The seventh wireless transmission module 124 is connected to the navigation module 121 and wirelessly connected to the third wireless transmission module 144, and outputs the second wireless transmission request R2 and the second driving information M2 to the third wireless transmission module 144 through the third wireless transmission technology.
In the preferred embodiment, the second information collecting device 12 is a mobile device such as a smart phone or a tablet computer, the fifth wireless transmission module 122 is a Wi-Fi wireless transmission module, the sixth wireless transmission module 123 is a 3G/4G wireless transmission module, the seventh wireless transmission module 124 is a bluetooth wireless transmission module, and the navigation module 121 is a navigation application installed in the mobile device. The above description is for illustrative purposes only and is not intended to be limiting. In another preferred embodiment, the second information collecting device is a navigation device. In a preferred embodiment, the navigation application installed in the mobile device further provides real-time traffic news on the internet and outputs the fourth vehicle information M4 in text type.
Referring to fig. 1 and fig. 4, fig. 4 is a block diagram of a third information collecting device of a vehicular projection system according to a preferred embodiment of the invention. The third information collecting device 13 includes a second image capturing device 131 and an eighth wireless transmission module 132, wherein the second image capturing device 131 is disposed on the rearview mirror 102 of the vehicle and can capture an image of the rearview mirror. The eighth wireless transmission module 132 is connected to the second image capturing device 131 and wirelessly connected to the second wireless transmission module 143, and outputs the third wireless transmission request R3 and the third traveling information M3 to the second wireless transmission module 143 by using the second wireless transmission technology. The rearview mirror image is defined as the third vehicle information M3. In the preferred embodiment, the second image capturing device 131 is a camera, and the eighth wireless transmission module 132 is a 3G/4G wireless transmission module.
Referring to fig. 1 and fig. 5, fig. 5 is a block diagram of a projection mechanism 15 of a vehicular projection system according to a preferred embodiment of the invention. The projection mechanism 15 includes a ninth wireless transmission module 151, a second storage device 152 and a projection module 153, wherein the ninth wireless transmission module 151 is wirelessly connected to the time division multiplexing device 14, and can receive the layout image S through a wireless transmission technology. The second storage element 152 is connected to the ninth wireless transmission module 151, and functions to store the layout image S therein. The projection module 153 is connected to the second storage element 152, and functions to project the layout image S on the glass 101 of the vehicle, so that the driver can view the road condition and the layout image S simultaneously during driving.
The operation of the projection system 1 for vehicle according to the present invention will be described. Referring to fig. 1, fig. 6A and fig. 6B are block flow diagrams illustrating operations of a control unit of a vehicular projection system according to a preferred embodiment of the present invention. First, the operation flow of the control unit 145 is described, and the control unit 145 performs the following steps:
step A: whether a wireless transmission request is received is detected.
And B: the number of received radio transmission demands is determined.
And C: determining transmission orders for a plurality of radio transmission requirements.
Step D1: the desired wireless transmission type is assigned according to the file attributes.
Step E1: the actual wireless transmission type is assigned according to the corresponding wireless transmission capability in the wireless transmission requirement.
Step D2: and respectively assigning ideal wireless transmission types according to the file attributes.
Step E2: respectively judging whether the ideal wireless transmission type is available.
Step E3: actual wireless transmission types are respectively assigned according to the corresponding wireless transmission capabilities in the wireless transmission requirements.
Step F1: the information collection device is notified to start wireless transmission.
Step F2: the plurality of information collection devices are notified of the start of wireless transmission, respectively.
Step G: and judging whether the occupied wireless transmission module is available.
Step H: and judging whether the traveling information which is not transmitted needs to be changed in wireless transmission type or not.
Step I: the wireless transmission is changed to the best wireless transmission type.
Step J: the wireless transmission type is not changed.
Wherein, detecting in step A that no wireless transmission request is received, proceeding step A again, otherwise proceeding step B. If it is determined in step B that the number of received radio transmission requests is equal to 1, step D1 is performed, and if it is determined that the number of received radio transmission requests is greater than 1, step C is performed. If it is determined in step E2 that the ideal wireless transmission type is available, go to step F2, otherwise go to step E3. And G, when the occupied wireless transmission module is judged to be available in the step G, performing the step H, otherwise, performing the step G again. And step H, when judging that the traveling information which is not transmitted completely needs to change the wireless transmission type, performing step I, otherwise, performing step J.
Next, the control unit 145 sets file attributes of different driving information before operation, where the file attributes are file types of the driving information. For example: the file types of the first driving information M1, the second driving information M2, and the third driving information M3 are all picture types, and the file sizes of the picture types are large, so they require better wireless transmission capability. Therefore, the control unit 145 assigns the wireless transmission types of the picture types to be a Wi-Fi wireless transmission module, a 3G/4G wireless transmission module, and a bluetooth wireless transmission module in order. As for the fourth line vehicle information M4, the file type is a text type, and the size of the text type is small, so that it does not need a wireless transmission capability of too high speed. Therefore, the control unit 145 assigns the wireless transmission types of the text type to be the bluetooth wireless transmission module, the 3G/4G wireless transmission module, and the Wi-Fi wireless transmission module in order.
According to the above, the wireless transmission type order correspondence table corresponding to the file attribute is as follows:
it should be noted that the determination of the file attribute of the driving information is determined according to the file size of the driving information, and the control unit 145 presets a first size range and a second size range, and when the file size of the driving information is within the first size range, the control unit 145 determines that the file attribute of the driving information is the picture type. When the file size is within the second size range, the control unit 145 determines that the file attribute of the driving information is a text type. The file attribute of the driving information is included in the corresponding wireless transmission requirement, so that the control unit 145 can know the file attribute of the driving information to be transmitted before starting the wireless transmission.
The operation of the projection system 1 for vehicle according to the present invention will be described. Referring to fig. 1 to fig. 6A and fig. 6B, before a driver drives a vehicle, the vehicle projection system 1 of the present invention is first activated, so that the first information collecting device 11, the second information collecting device 12, and the third information collecting device 13 respectively start to operate, and the time division multiplexing element 14 is wirelessly connected to the first information collecting device 11, the second information collecting device 12, the third information collecting device 13, and the projection mechanism 15 by a wireless transmission technology. In the first information collecting device 11, after the vehicle is started, the display device 111 starts to display the driving state information of the vehicle, and the first image capturing device 112 captures the image corresponding to the driving state information from the display device 111 to generate the first driving information M1. After the first driving information M1 is generated, the fourth wireless transmission module 113 outputs the first wireless transmission request R1 to the first wireless transmission module 142 by the first wireless transmission technology, so as to notify the time division multiplexing component 14 that there is a need for wireless transmission currently, so as to perform the communication operation before wireless transmission. The first wireless transmission request R1 includes the file attribute of the first driving information M1.
On the other hand, the navigation module 121 of the second information collecting device 12 is connected to the internet and retrieves the navigation information of the current location of the vehicle to generate the second driving information M2. Since the second information collecting device 12 is preset to perform the communication operation before the wireless transmission by the wireless transmission module with the best wireless transmission capability, the fifth wireless transmission module 122 outputs the second wireless transmission request R2 to the first wireless transmission module 142 by the first wireless transmission technology, so as to notify the time division multiplexing component 14 that there is a need for wireless transmission currently. The operation of the third information collecting device 13 is also the same as that described above, so that the eighth wireless transmission module 132 outputs the third wireless transmission request R3 to the second wireless transmission module 143 by the second wireless transmission technology.
Referring to fig. 1 and fig. 2, the control unit 145 of the time division multiplexing device 14 starts to perform step a after the vehicle projection system 1 is started up: whether a wireless transmission request is received is detected. If the time division multiplexing element 14 does not receive any wireless transmission request, step a is performed again after a first preset time (e.g. 10 ms). After the time division multiplexing device 14 sequentially receives the first radio transmission request R1, the second radio transmission request R2 and the third radio transmission request R3, the control unit 145 performs step B: the number of received radio transmission demands is determined. Since the number of received radio transmission requests is 3, the control unit 145 performs step C: determining transmission order of a plurality of radio transmission requests, wherein the transmission order is determined according to the order of receiving the radio transmission requests. For example: the time division multiplexing device 14 receives the radio transmission requests in the order of the first radio transmission request R1, the second radio transmission request R2 and the third radio transmission request R3, and the control unit 145 determines in step C the transmission orders of the radio transmission to be the first radio transmission request R1, the second radio transmission request R2 and the third radio transmission request R3.
Next, the control unit 145 assigns the desired wireless transmission type according to the file attributes, i.e., performs step D2. The control unit 145 reads the file attribute of the first driving information M1 in the first wireless transmission requirement R1 according to the transmission order of wireless transmission, and since the file attribute of the first driving information M1 is a picture type, the first wireless transmission module 142 can be assigned to the first information collecting device 11 corresponding to the first wireless transmission requirement R1 according to the wireless transmission order correspondence table, that is, for the first driving information M1, the wireless transmission type is preferably a Wi-Fi wireless transmission module. The control unit 145 proceeds to step D2 for the file attributes in the other wireless transmission requests (R2, R3), and assigns the Wi-Fi wireless transmission module to the second information collecting device 12 and assigns the Wi-Fi wireless transmission module to the third information collecting device 13.
After the step D2 is completed, the control unit 145 proceeds to step E2: whether the ideal wireless transmission type is available is determined, and the sequence of the step E2 is still the first wireless transmission request R1, the second wireless transmission request R2 and the third wireless transmission request R3. For the first wtru request R1, the transmission order is the first order, so the first wtru 142 is not used. On the other hand, since the first information collecting device 11 also has Wi-Fi wireless transmission capability, the control unit 145 determines that the ideal wireless transmission type corresponding to the first wireless transmission requirement R1 is usable.
For the second wireless transmission request R2, the transmission order is the second bit, and since the first wireless transmission module 142 in the time division multiplexing element 14 is already used by the first information collecting device 11, the control unit 145 determines that the ideal wireless transmission type corresponding to the second wireless transmission request R2 is not available, and proceeds to step E3: the actual wireless transmission type is assigned according to the corresponding wireless transmission capability in the second wireless transmission requirement R2. For the second information collecting device 12, the best wireless transmission capability currently available is 3G/4G wireless transmission module (i.e. the sixth wireless transmission module 123), so the control unit 145 assigns the second wireless transmission module 143 (which is 3G/4G wireless transmission capability) to the second information collecting device 12 corresponding to the second wireless transmission requirement R2.
For the third wireless transmission request R3, the transmission order is the third position, the third information collecting device 13 only has 3G/4G wireless transmission capability, but since the second wireless transmission module 143 in the time division multiplexing element 14 is already used by the second information collecting device 12, the control unit 145 determines that the ideal wireless transmission type corresponding to the third wireless transmission request R3 is not available, and proceeds to step E3: the actual wireless transmission type is assigned according to the corresponding wireless transmission capability in the third wireless transmission requirement R3. For the third information collecting device 13, which has only 3G/4G wireless transmission capability, the control unit 145 still assigns the second wireless transmission module 143 (with 3G/4G wireless transmission capability) to the third information collecting device 13 corresponding to the third wireless transmission request R3, but the wireless transmission of the third information collecting device 13 must wait for the second driving information M2 of the second information collecting device 12 to complete before starting.
According to the operations of step E2 to step E3, the control unit 145 determines the wireless transmission methods of the first information collecting device 11, the second information collecting device 12, and the third information collecting device 13. Based on the determined wireless transmission method, the control unit 145 notifies the first information collecting device 11, the second information collecting device 12, and the third information collecting device 13 that wireless transmission can be started, that is, proceeds to step F2. Wherein the wireless transmission by the third information collecting device 13 is not started.
In response to the operation of step F2, the first information collecting device 11 wirelessly transmits the first driving information M1 to the first wireless transmission module 142 via the fourth wireless transmission module 113, and the second information collecting device 12 wirelessly transmits the second driving information M2 to the second wireless transmission module 143 via the sixth wireless transmission module 123. During the wireless transmission, the control unit 145 performs step G: whether the occupied wireless transmission modules are available is determined, wherein the currently occupied wireless transmission modules are the first wireless transmission module 142 and the second wireless transmission module 143, that is, whether the transmission of the first driving information M1 and the transmission of the second driving information M2 are completed is determined respectively. Since the first driving information M1 and the second driving information M2 are not completely transmitted, the control unit 145 performs step G again after a second predetermined time period elapses.
After the time division multiplexing device 14 receives the first driving information M1 and stores it in the first storage device 141, the control unit 145 proceeds to step G again: if the occupied wireless transmission module is available, that is, if the first driving information M1 is completely transmitted, the control unit 145 performs step H: and judging whether the traveling information which is not transmitted needs to be changed in wireless transmission type or not. In step H, the control unit 145 determines whether the wireless transmission types of the second driving information M2 and the third driving information M3 need to be changed, respectively, since the first wireless transmission module 142 of the optimal wireless transmission type corresponding to the second driving information M2 is occupied, the second driving information M2 is not assigned as the optimal wireless transmission type and needs to be changed. On the other hand, although the third pieces of vehicular information M3 are not assigned as the optimal wireless transmission type, the third information collecting device 13 has only 3G/4G wireless transmission capability, so the third pieces of vehicular information M3 do not need to change the wireless transmission type.
Based on the determination result in step H, the control unit 145 performs step I on the second traveling information M2: the wireless transmission of the second traveling information M2 in transmission is changed to the optimal wireless transmission type, that is, the control unit 145 instructs the second information collecting device 12 to transmit the second traveling information M2 by using the fifth wireless transmission module 122 having Wi-Fi wireless transmission capability instead. On the other hand, the control unit 145 performs step J on the third traveling information M3: the wireless transmission type is not changed, but the second wireless transmission module 143 of the optimal wireless transmission type corresponding to the third vehicle information M3 is changed to be unoccupied, so the third vehicle information M3 can start wireless transmission, and the eighth wireless transmission module 132 wirelessly transmits the third vehicle information M3 to the second wireless transmission module 143.
After the time division multiplexing component 14 receives the first driving information M1, the second driving information M2, and the third driving information M3, the control unit 145 loads the first driving information M1, the second driving information M2, and the third driving information M3 on a predetermined layout to generate a layout image S, and the layout image S is as shown in fig. 7. Wherein, the preset layout can be preset, and certainly can be set according to the requirement of the driver. After the layout image S is generated, the time division multiplexing element 14 outputs the layout image S to the ninth wireless transmission module 151 through any wireless transmission module. After the projection mechanism 15 receives the layout image S, the layout image S is stored in the second storage device 152, and the projection module 153 is used to project the layout image S on the glass 101 of the vehicle, so that the driver can watch the road condition and the layout image S simultaneously during driving, thereby reducing the time for the driver to leave the glass 101.
The operation of the projection system 1 for vehicle according to the present invention in different operation situations will be described. Referring to fig. 1 to 6 again, when the second information collecting device 12 intends to transmit the fourth driving information M4 (the file attribute is a text type), the third information collecting device 13 intends to transmit the third driving information M3, and the first information collecting device 11 intends to transmit the first driving information M1, the operation of the vehicular projection system 1 of the present invention is as follows. The control unit 145 may determine the transmission order of the wireless transmission according to the steps a to C as the second wireless transmission request R2 corresponding to the fourth traveling information M4, the third wireless transmission request R3 corresponding to the third traveling information M3, and the first wireless transmission request R1 corresponding to the first traveling information M1. Next, the control unit 145 may assign the bluetooth wireless transmission module to the second information collecting device 12, assign the Wi-Fi wireless transmission module to the third information collecting device 13, and assign the Wi-Fi wireless transmission module to the first information collecting device 11 according to the operation of step D2.
After the determination of the ideal wireless transmission type for each wireless transmission request, according to the operations of the steps E2-E3, the control unit 145 assigns the actual wireless transmission type as the 3G/4G wireless transmission module because the third information collecting device 13 only has 3G/4G wireless transmission capability. On the other hand, although the transmission order of the first information collecting device 11 is behind the third information collecting device 13, the first information collecting device 11 is still assigned to perform wireless transmission with the Wi-Fi wireless transmission module since the Wi-Fi wireless transmission module is not occupied by the third information collecting device 13. In summary, the control unit 145 determines that the second information collecting device 12 performs wireless transmission through the bluetooth wireless transmission module, the third information collecting device 13 performs wireless transmission through the 3G/4G wireless transmission module, and the first information collecting device 11 performs wireless transmission through the Wi-Fi wireless transmission module.
It should be noted that when the time division multiplexing device 14 receives only one radio transmission request in step B, the control unit 145 performs step D1, step E1 and step F1 in sequence to start radio transmission. The detailed operation is the same as above, and thus is not described again.
Based on the determined wireless transmission method, the control unit 145 notifies the first information collecting device 11, the second information collecting device 12, and the third information collecting device 13 that wireless transmission can be started, that is, proceeds to step F2. Therefore, the first information collecting device 11, the second information collecting device 12, and the third information collecting device 13 can simultaneously perform wireless transmission with the time division multiplexing device 14 by different wireless transmission technologies. In the process of wireless transmission, the control unit 145 performs step G, step H, and step I (or step J) to complete the operation.
As can be seen from the above, the time division multiplexing component of the projection system for vehicle according to the present invention can determine the transmission order of the plurality of information collecting devices according to the sequence of the wireless transmission requests transmitted by the plurality of information collecting devices. Then, according to the file attribute of the driving information to be transmitted and the wireless transmission capability of the plurality of information collecting devices, it can be determined that an appropriate wireless transmission module should be used. Therefore, the information collecting devices can transmit the driving information to the time division multiplexing element through different wireless transmission modules simultaneously so as to carry out high-efficiency wireless transmission. In addition, when a plurality of wireless transmission modules simultaneously perform wireless transmission and the optimal (higher speed) wireless transmission module is occupied, the vehicle projection system firstly assigns the sub-optimal wireless transmission module to perform wireless transmission, and switches to the optimal wireless transmission module to perform wireless transmission when the optimal wireless transmission module is not occupied, so that the wireless transmission efficiency can be improved, and a real-time layout image close to a driver can be provided for watching, so that the problem of picture delay is solved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the claims, therefore, all equivalent changes and modifications without departing from the spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. A projection system for a vehicle, applied in a vehicle, comprising:
the first information collecting device is used for outputting first driving information and a first wireless transmission demand corresponding to the first driving information, wherein the first wireless transmission demand comprises file attributes of the first driving information;
the second information collecting device is used for outputting second driving information and a second wireless transmission demand corresponding to the second driving information, wherein the second wireless transmission demand comprises the file attribute of the second driving information;
a time division multiplexing component, wirelessly connected to the first information collecting device and the second information collecting device, for detecting the first wireless transmission requirement and the second wireless transmission requirement, and determining a wireless transmission mode of at least one of the first driving information and the second driving information according to a detection result; after receiving the first driving information and the second driving information, the time division multiplexing element generates a layout image according to the first driving information and the second driving information and outputs the layout image; and
the projection mechanism is wirelessly connected with the time division multiplexing element and is used for projecting the layout image on a glass of the automobile; wherein, the layout image comprises the first driving information and the second driving information;
wherein the time division multiplexing element comprises:
the first storage element is used for temporarily storing the first driving information and the second driving information;
the first wireless transmission module is connected with the first storage element and used for receiving the first driving information or the second driving information by a first wireless transmission technology;
the second wireless transmission module is connected with the first storage element and used for receiving the second driving information by a second wireless transmission technology; and
the control unit is connected with the first storage element, the first wireless transmission module and the second wireless transmission module and used for determining the wireless transmission mode of the first driving information and the second driving information according to the sequence of receiving the first wireless transmission requirement and the second wireless transmission requirement, the file attribute of the first driving information corresponding to the first wireless transmission requirement, the file attribute of the second driving information corresponding to the second wireless transmission requirement and the wireless transmission capability information corresponding to the first wireless transmission requirement and the second wireless transmission requirement.
2. The vehicular projection system according to claim 1, wherein the control unit determines the number of the received wireless transmission requests when the control unit detects that at least one of the first wireless transmission request and the second wireless transmission request is received; when the control unit judges that the number of the received wireless transmission demands is one, the control unit assigns an ideal wireless transmission type according to the file attribute corresponding to the first wireless transmission demand or the second wireless transmission demand; when the control unit judges that the number of the received wireless transmission demands is more than one, the control unit determines the transmission orders of the first wireless transmission demands and the second wireless transmission demands according to the time for receiving the first wireless transmission demands and the second wireless transmission demands, and assigns an ideal wireless transmission type according to the file attributes corresponding to the first wireless transmission demands and the second wireless transmission demands.
3. The projection system for vehicle of claim 2, wherein the file attribute corresponding to the first wireless transmission requirement is a file type of the first driving information, and the file attribute corresponding to the second wireless transmission requirement is a file type of the second driving information; when the control unit presets the file type to be the picture type, the ideal wireless transmission type is assigned to be the Wi-Fi wireless transmission module, and when the control unit presets the file type to be the text type, the ideal wireless transmission type is assigned to be the Bluetooth wireless transmission module.
4. The projection system for vehicles of claim 2, wherein after the desired wireless transmission type is assigned, the control unit assigns an actual wireless transmission type according to the wireless transmission capability information corresponding to at least one of the first wireless transmission request and the second wireless transmission request, and notifies at least one of the first information collecting device and the second information collecting device to start wireless transmission.
5. The vehicular projection system according to claim 4, wherein the control unit detects and determines whether the transmission of the first driving information or the second driving information with the best transmission priority is completed after the time division multiplexing element receives at least one of the first driving information and the second driving information; when the first driving information or the second driving information is transmitted, the control unit judges whether to change the wireless transmission type of the driving information with the second best transmission order.
6. The vehicular projection system according to claim 1, wherein the first information collecting means comprises:
the display device is used for displaying the driving state information of the automobile;
the image acquisition device is arranged in the vicinity of the display device and is used for acquiring an image corresponding to the driving state information; and
a third wireless transmission module, connected to the image capturing device and wirelessly connected to the first wireless transmission module, for outputting the first wireless transmission requirement and the first driving information to the first wireless transmission module by the first wireless transmission technology; wherein the first driving information is the image.
7. The projection system of claim 6, wherein the display device is a dashboard of the vehicle, and the driving status information comprises a driving speed, a temperature inside the vehicle, a gear status and a gasoline capacity of the vehicle.
8. The vehicular projection system according to claim 1, wherein the second information collecting means comprises:
the navigation module is used for capturing navigation information;
the fourth wireless transmission module is connected with the navigation module, is wirelessly connected with the first wireless transmission module, and is used for outputting the second wireless transmission requirement and the second driving information to the first wireless transmission module by the first wireless transmission technology; and
the fifth wireless transmission module is connected with the navigation module and the second wireless transmission module in a wireless way and used for outputting the second wireless transmission requirement and the second driving information to the second wireless transmission module by the second wireless transmission technology; wherein the second driving information is the navigation information.
9. The vehicular projection system of claim 8, wherein the first wireless transmission module and the fourth wireless transmission module are Wi-Fi wireless transmission modules, and the second wireless transmission module and the fifth wireless transmission module are bluetooth wireless transmission modules.
10. The vehicular projection system according to claim 1, wherein the projection mechanism comprises:
a sixth wireless transmission module, wirelessly connected to the time division multiplexing element, for receiving the layout image;
the second storage element is connected with the sixth wireless transmission module and used for storing the layout image; and
and the projection module is connected with the second storage element and used for projecting the layout image on the glass of the automobile.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610636040.4A CN107688239B (en) | 2016-08-05 | 2016-08-05 | Projection system for vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610636040.4A CN107688239B (en) | 2016-08-05 | 2016-08-05 | Projection system for vehicle |
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| CN107688239B true CN107688239B (en) | 2020-11-13 |
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| CN101638039B (en) * | 2009-08-25 | 2012-05-23 | 深圳职业技术学院 | Vehicle-running wireless monitoring and recording device |
| CN103198636A (en) * | 2013-02-25 | 2013-07-10 | 中南大学 | High speed wireless data acquisition method and apparatus for pulsation pressure of high speed train |
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