JP2015003693A - Display device for vehicle, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device for a vehicle capable of highly accurately displaying vehicle information even when displaying the vehicle information obtained through a vehicle diagnosis connector, as an analog instrument image.SOLUTION: A display device 1000 for a vehicle includes: vehicle information acquisition means 200 for acquiring vehicle information through a vehicle diagnosis connector 302 provided at a vehicle 300; and a mobile phone 100 having a display operation unit 104, a radio interface 102 for receiving the vehicle information from the vehicle information acquisition means 200, and a control unit 101 for making the vehicle information received by the radio interface 102 be displayed in the display operation unit 104 as an analog instrument image. The control unit 101 has: a dial change function for changing design of a dial image according to the selection result of a maximum display value of the analog instrument image; and a display resolution change function for changing display resolution according to the selection result of the display resolution of the analog instrument image.

Description

  The present invention relates to a vehicle display device and a program for acquiring vehicle information via a vehicle diagnosis connector provided on the vehicle and displaying the vehicle information on a display unit.

  Conventionally, as a retrofit vehicle display device that acquires vehicle information from a vehicle-side ECU (Electronic Control Unit) via a vehicle diagnostic connector such as OBD2 (On-board diagnostics 2) provided in the vehicle and displays the vehicle information, for example, There is one disclosed in Patent Document 1.

JP 2008-49731 A

In such a vehicle display device, a TFT type liquid crystal display or the like is used for the display unit, and the vehicle information acquired through the vehicle diagnosis connector is displayed on an analog instrument image including a pointer image and a dial image having a scale. There is. The analog instrument image can be arbitrarily changed in design and is highly convenient. For example, the maximum display value can be arbitrarily changed. However, the vehicle information acquired via the vehicle diagnostic connector compared to the case where vehicle information is measured by various sensors or the like may have a coarser (larger) numerical unit depending on the type of vehicle and vehicle information. When displaying vehicle information in an image, there is a problem that the display accuracy of an analog instrument image can be felt low.
As an example, the vehicle speed in the vehicle information can be acquired in units of 1 km / h via the OBD 2, and in this case, conventionally, the display resolution of the analog instrument image is 1 km / h. However, depending on the maximum display value of the analog instrument image, the angle at which the pointer image moves every 1 km / h is large, and it may be felt that the indication accuracy of the pointer image is low. Specifically, in the analog instrument image displayed from 0 to 300 km / h in the angle range of 270 °, the movement angle of the pointer image when the vehicle speed changes by 1 km / h is 0.9 °, whereas In an analog instrument image displayed up to 180 km / h, the movement angle of the pointer image when the vehicle speed changes by 1 km / h is 1.5 °, and the display accuracy of the pointer image may be felt low.

  The present invention has been made in view of the above-described problems, and can display with high display accuracy even when the vehicle information acquired via the vehicle diagnosis connector is displayed as an analog instrument image. An object of the present invention is to provide a display device for a vehicle and a program.

In order to solve the above-described problems, the present invention provides vehicle information acquisition means for acquiring vehicle information via a vehicle diagnosis connector provided in the vehicle,
A display unit capable of displaying an analog instrument image including a pointer image and a dial image having a scale, a receiving unit that receives the vehicle information from the vehicle information acquisition unit, and the vehicle information received by the receiving unit A display unit having a control unit that displays the analog instrument image on the display unit, and a display device for a vehicle,
An operation means for arbitrarily selecting the maximum display value and display resolution of the analog instrument image,
The control unit includes a dial change function for changing a design of the dial image according to a selection result of the maximum display value by the operation means, and the display resolution according to a selection result of the display resolution by the operation means. And a display resolution changing function for changing the display resolution.

The present invention is a program for solving the aforementioned problems,
An analog including a pointer image and a dial plate image having a scale on a display unit by receiving the vehicle information from a vehicle information acquisition unit that acquires vehicle information via a vehicle diagnosis connector provided in the vehicle and receiving the computer. A display function for changing the design of the dial image in accordance with the selection result of the maximum display value of the analog instrument image by the operation means, and display resolution of the analog instrument image by the operation means. It is made to function as a control part provided with a display resolution change function which changes the display resolution according to a selection result.

  The present invention can display with high display accuracy even when the vehicle information acquired via the vehicle diagnosis connector is displayed as an analog instrument image.

It is a block diagram which shows the structure of the display apparatus for vehicles which is embodiment of this invention. It is a figure which shows the example of a display of the mobile telephone with which the display apparatus for vehicles same as the above is equipped. It is a flowchart figure which shows the vehicle information acquisition process of the vehicle information acquisition means with which the display apparatus for vehicles same as the above is equipped. It is a figure which shows the vehicle information display process of a mobile telephone same as the above. It is a figure which shows the full scale selection screen of a mobile telephone same as the above. It is a figure which shows the example of a display of a mobile telephone same as the above. It is a figure which shows the example of a display of a mobile telephone same as the above. It is a figure which shows the example of a display of a mobile telephone same as the above. It is a figure which shows the example of a display of a mobile telephone same as the above. It is a figure which shows the display resolution selection screen of a mobile telephone same as the above. It is a flowchart figure which shows the display resolution change process of a mobile telephone same as the above. It is a flowchart figure which shows the minimum resolution holding | maintenance process of the mobile telephone in the modification of embodiment of this invention. It is a figure which shows the data table memorize | stored in the memory | storage part of a mobile telephone same as the above.

  Hereinafter, embodiments according to the present invention will be described with reference to the drawings. In addition, this invention is not limited by the following embodiment (The content of drawing is also included). It goes without saying that changes (including deletion of components) can be added to the following embodiments. Moreover, in the following description, in order to make an understanding of this invention easy, description of a known technical matter is abbreviate | omitted suitably.

FIG. 1 is a diagram showing a configuration of a vehicle display device 1000 according to an embodiment of the present invention.
The vehicle display device 1000 includes a mobile phone (an example of a display unit and an operation unit) 100 and a vehicle information acquisition unit 200. The mobile phone 100 and the vehicle information acquisition unit 200 are wirelessly connected so that mutual communication is possible. Note that the mobile phone 100 and the vehicle information acquisition unit 200 may be connected by wire. The vehicle information acquisition unit 200 acquires vehicle information from the vehicle side ECU 301 via a vehicle diagnosis connector 302 provided in the vehicle 300. As vehicle information to be acquired, various measurement values such as vehicle speed, engine speed, throttle opening, water temperature, intake air pressure, intake air temperature, outside air temperature, voltage value and the like can be raised, but are not limited thereto. The vehicle-side ECU 301 includes a power train ECU for engine control and a body ECU for air conditioner control. In the present embodiment, the vehicle diagnosis connector 302 is an OBD2 female connector, and performs CAN communication between the vehicle-side ECU 301 and the vehicle information acquisition unit 200. The vehicle-side ECU 301 and the vehicle information acquisition unit 200 may communicate with each other by K-LINE.

  The cellular phone 100 includes a control unit 101, a wireless communication interface 102, a storage unit 103, a display operation unit 104, a communication unit 105, and an antenna unit 106.

  The control unit 101 includes, for example, a microcomputer, and includes a CPU (Central Processing Unit) that actually performs processing (such as control of the entire mobile phone 100) executed by the control unit 101, and a RAM (Random Access) that functions as a main memory of the CPU. Memory), ROM (Read Only Memory) that stores various programs for causing the control unit 101 to execute processing described later, and information (signals) input / output to / from the control unit 101 are converted into digital data for output to the CPU or output And various converters that perform analog conversion. In addition to the CPU, the control unit 101 may include various dedicated circuits (for example, an image processing circuit) for executing part of the processing performed by the control unit 101 instead of the CPU.

  The wireless communication interface 102 is an interface for wirelessly connecting to the vehicle information acquisition unit 200, and short-range wireless communication such as Bluetooth (registered trademark) or wireless LAN is used. The wireless communication interface 102 functions as a receiving unit of the present invention.

  The storage unit 103 stores data used when the control unit 101 executes processing. The storage unit 103 includes a nonvolatile storage medium that can rewrite data, such as a flash memory. The storage unit 103 may include an easily removable memory card or the like.

  The display operation unit 104 is a display provided with a touch panel, and includes a function as a display unit for displaying an image and a function as an operation unit for executing an application.

  The communication unit 105 includes various demodulators and modulators. For example, the communication unit 105 is connected to a network such as the Internet via the antenna unit 106, and is supplied with information (for example, a network server) supplied via the network from other external devices (for example, a network server). (Including an image and a program) and supply it to the control unit 101, or supply information transmitted from the control unit 101 to other devices via a network.

  The mobile phone 100 according to the present embodiment is a high-function mobile phone called a so-called smartphone, stores a plurality of types of applications in the control unit 101, and is activated when the control unit 101 executes each application. It has various functions such as a call function, a mail function, a navigation function, a music data playback function, a photo data playback function, a moving image data playback function, a map display function, and a web browsing function. Furthermore, in this embodiment, an application (hereinafter referred to as a vehicle information display application) for executing a vehicle information display function for displaying vehicle information described later is provided. In the mobile phone 100, an image corresponding to the application being executed is displayed on the display operation unit 104.

  The vehicle information acquisition unit 200 includes a control unit 201 formed of a microcomputer, a connector 202, a CAN communication interface 203, a wireless communication interface 204, and a storage unit 205.

  The control unit 201 includes, for example, a CPU that actually performs processing (such as transmission of vehicle information) executed by the control unit 201, a RAM that functions as a main memory of the CPU, and various types that cause the control unit 201 to perform processing described later. A ROM that stores a program, and various converters that digitally convert information (signals) input / output to / from the control unit 201 and convert them to analog for output.

  The connector 202 is a connector that can be connected to a vehicle diagnostic connector 302 provided in the vehicle 300. In the present embodiment, the OBD 2 has wirings of a + 12V constant power line, a CAN_H signal line, a CAN_L signal line, and an earth line. It consists of a male connector.

  The CAN communication interface 203 is an interface for performing CAN communication with the vehicle-side ECU 301 via the vehicle diagnosis connector 302.

  The wireless communication interface 204 is an interface for wireless connection with the mobile phone 100 and has the same standard as the wireless communication interface 102.

  The storage unit 205 stores vehicle information obtained from the vehicle-side ECU 301, a data table for generating request data to be described later, and the like.

  In the vehicular display device 1000, when the mobile phone 100 is brought into the vehicle 300 and the mobile phone 100 and the vehicle information acquisition unit 200 are connected, the respective control units 101 and 201 mutually connect the wireless communication interfaces 102 and 204. Recognize that they are connected via In addition, when the mobile phone 100 is brought into the vehicle 300, the mobile phone 100 is disposed in an arbitrary place in the vehicle interior (for example, a cradle installed on a dashboard). When the control unit 101 of the mobile phone 100 recognizes that it is connected to the vehicle information acquisition unit 200, the control unit 101 can receive vehicle information from the vehicle information acquisition unit 200. At this time, the vehicle information display application may be automatically activated, or the vehicle information display application may be manually activated. In addition, the control unit 201 of the vehicle information acquisition unit 200 transmits vehicle information acquired by a method described later to the mobile phone 100 via the wireless communication interface 204. The mobile phone 100 receives vehicle information from the vehicle information acquisition unit 200 via the wireless communication interface 102. FIG. 2 shows a display example of the normal display mode in the vehicle information display application. In FIG. 2, as vehicle information, vehicle speed and intake pressure are displayed as analog instrument images F1, F2 including pointer images F11, F21 and dial images F12, F22 having scales and numbers, respectively. The water temperature and voltage value are digitally displayed. Further, the time is digitally displayed as other information. The vehicle information displayed on the analog instrument images F1 and F2 and the vehicle information displayed digitally can be arbitrarily changed by a predetermined setting operation.

  Next, the vehicle information acquisition method by the vehicle information acquisition means 200 is demonstrated using FIG.

  When the power is turned on, the control unit 201 of the vehicle information acquisition unit 200 initializes the request number N (N = 1) (step S1).

  And the control part 201 produces | generates the data frame (request data) which requests | requires one of vehicle information from the vehicle side ECU301 (step S2). Here, the vehicle information requested by the request data is determined with reference to a data table stored in the storage unit 205. The data table includes, for example, a request number N and the type of vehicle information. That is, the request data for requesting vehicle information corresponding to the request number N is generated.

  Next, the control unit 201 transmits the request data generated in step S1 from the CAN communication interface 203 to the vehicle-side ECU 301 via the vehicle diagnosis connector 302 (step S3). The request data is transmitted on a bus line (not shown) in the vehicle and received by the vehicle-side ECU 301. The vehicle-side ECU 301 that has received the request data transmits a data frame (response data) indicating the vehicle information requested by the request data onto the bus line. The response data transmitted on the bus line is received by the control unit 201 via the vehicle diagnosis connector 302 and the CAN communication interface 203, and the control unit 201 acquires vehicle information.

  Next, the control unit 201 determines whether or not the response data has been received (step S4). When the response data is not received (step S4; No), the control unit 201 further determines whether or not a predetermined request time T (for example, 50 msec) has elapsed after the transmission of the request data (step S5). If the request time T has elapsed (step S5; Yes), the request number N is increased (N = N + 1, step S6). If the request time T has not elapsed (step S5; No), the control unit 201 proceeds to step S4 and determines whether or not the response data has been received again.

  In addition, when the response data is received in step S4 (step S4; Yes), the control unit 201 increases the request number N (N = N + 1, step S6).

Next, the control unit 201 determines whether or not the request number N has exceeded the maximum value N _max (step S7). When the request number N is equal to or less than the maximum value N _max (N ≦ N _max , step S7; No), the control unit 201 returns to step S2. When the request number N exceeds the maximum value N _max (N> N _max , step S7; Yes), the control unit 201 returns to step S1, initializes the request number N (N = 1), Thereafter, the processes after step S2 are executed.

  The control unit 201 periodically acquires a plurality of types of vehicle information by repeatedly executing the above-described processing until the power is turned off.

  Next, vehicle information display processing of the control unit 101 during execution of the vehicle information display application will be described with reference to FIG. In addition, the program concerning the following display processes shall be contained in the said vehicle information display application.

During execution of the vehicle information display application, the control unit 101 first receives vehicle information from the vehicle information acquisition unit 200 via the wireless interface 102 at a predetermined interval in step S11.
Next, in step S12, the control unit 101 performs an averaging process on a predetermined number of pieces of vehicle information (hereinafter referred to as an average number a) received in step S11. The average number a is arbitrarily set by a display resolution changing function to be described later and stored in the storage unit 103. The effect of arbitrarily setting the average number a will be described in detail later.
Next, the control unit 101 causes the display operation unit 104 to display the vehicle information averaged in step S12 in step S13. When displaying the vehicle information on the analog instrument images F1 and F2, the control unit 101 moves the pointer images F11 and F21 on the display operation unit 104 so as to instruct the values of the vehicle information on the dial images F12 and F22. When the vehicle information is digitally displayed, the number indicating the vehicle information is updated.
The control unit 101 causes the display operation unit 104 to display the vehicle information by repeatedly executing the above-described processing until the power is turned off.

  Next, the dial plate changing function of the control unit 101 during execution of the vehicle information display application will be described by taking as an example the case of changing the design of the analog instrument image F1 that displays the vehicle speed. In addition, the program concerning the following dial plate change functions shall be contained in a vehicle information display application. In the dial change function, full scale (maximum display value) is selected for each vehicle information, and the design of the dial images F12 and F22 of the analog instrument images F1 and F2 can be changed according to the selection result. It shall be.

FIG. 5 shows a full scale selection screen G1 for selecting the full scale of the analog instrument image F1 displaying the vehicle speed.
The full scale selection screen G1 is displayed, for example, by tapping a predetermined icon indicating the full scale setting of the vehicle speed on a setting list screen (not shown) that displays various settings of the vehicle information display application as icons. On the full scale selection screen G1, selectable full scale values (in FIG. 5, four types of 180 km / h, 240 km / h, 300 km / h, and 400 km / h) and selection buttons for selecting them B11 to B14 are displayed. The user taps one of the selection buttons B11 to B14 to select the full scale of the analog instrument image F1 that displays the vehicle speed. When the full-scale selection operation (tap operation of selection buttons B11 to B14) by the display operation unit 104 is input, the control unit 101 changes the design of the analog instrument image F1 to the display operation unit 104 according to the selection result. Let Further, the selection buttons B11 to B14 corresponding to the full scale being selected are displayed with negative / positive inversion (displayed in black in FIG. 5). The design may be changed by a known method. For example, image data corresponding to each design is stored in the storage unit 103, and image data corresponding to the full-scale selection result is read and displayed. Alternatively, a design (scale or number) may be appropriately drawn on the coordinates of the dial image F12 in accordance with the full scale selection result.

6 to 9 show display examples corresponding to the selection of the full scale of the analog instrument image F1 displaying the vehicle speed.
FIG. 6 shows a display example when “180 km / h” is selected as the full scale of the vehicle speed. In FIG. 6, the dial image F12 of the analog instrument image F1 is an indication of 270 ° with the 6 o'clock position of the clock set to the minimum display value (0 km / h) and the 3 o'clock position of the clock set to the full scale (180 km / h). It is displayed by the design by which the scale (the main scale and the sub scale) was arrange | positioned in the angle range. Therefore, the movement angle of the pointer image F11 when the vehicle speed in the analog instrument image F1 changes by 1 km / h when the full scale is 180 km / h is 1.5 °.
FIG. 7 shows a display example when “240 km / h” is selected as the full scale of the vehicle speed. In FIG. 7, the dial image F12 of the analog instrument image F1 is an indication of 270 ° with the 6 o'clock position of the clock set to the minimum display value (0 km / h) and the 3 o'clock position of the clock set to full scale (240 km / h). It is displayed by the design by which the scale (the main scale and the sub scale) was arrange | positioned in the angle range. Therefore, the movement angle of the pointer image F11 when the vehicle speed changes by 1 km / h in the analog instrument image F1 when the full scale is 240 km / h is about 1.1 °.
FIG. 8 shows a display example when “300 km / h” is selected as the full scale of the vehicle speed. In FIG. 8, the dial image F12 of the analog instrument image F1 is an indication of 270 ° with the 6 o'clock position of the clock set to the minimum display value (0 km / h) and the 3 o'clock position of the clock set to full scale (300 km / h). It is displayed by the design by which the scale (the main scale and the sub scale) was arrange | positioned in the angle range. Therefore, the movement angle of the pointer image F11 when the vehicle speed in the analog instrument image F1 changes by 1 km / h when the full scale is 300 km / h is 0.9 °.
FIG. 9 shows a display example when “400 km / h” is selected as the full scale of the vehicle speed. In FIG. 9, the dial image F12 of the analog instrument image F1 is a 270 ° instruction in which the 6 o'clock position is the minimum display value (0 Km / h) and the 3 o'clock position is the full scale (400 km / h). It is displayed by the design by which the scale (the main scale and the sub scale) was arrange | positioned in the angle range. Therefore, the movement angle of the pointer image F11 when the vehicle speed in the analog instrument image F1 changes by 1 km / h when the full scale is 400 km / h is about 0.6 °.
Therefore, in the analog instrument image F1 displaying the vehicle speed, the movement angle of the pointer image F11 accompanying the change in the vehicle speed increases as the full scale value decreases.

  Next, the display resolution changing function of the control unit 101 during execution of the vehicle information display application will be described by taking as an example the case of changing the display resolution of the analog instrument image F1 that displays the vehicle speed. In addition, the program concerning the following display resolution change functions shall be contained in a vehicle information display application. In the display resolution changing function, the display resolution can be selected for each vehicle information.

FIG. 10 shows a display resolution selection screen G2 for selecting the display resolution of the analog instrument image F1 that displays the vehicle speed.
The display resolution selection screen G2 is displayed by, for example, tapping a predetermined icon indicating the display resolution setting of the vehicle speed on the setting list screen (not shown) that displays various settings of the vehicle information display application as icons. . In the display resolution selection screen G2, selectable display resolutions (three types of “low”, “medium”, and “high” in FIG. 10) and selection buttons B21 to B23 for selecting these are displayed. Has been. The user taps one of the selection buttons B21 to B23 to select the display resolution of the analog instrument image F1 that displays the vehicle speed.

FIG. 11 is a diagram showing processing of the control unit 101 in the display resolution changing function.
When a selection operation (tap operation) in which any one of the selection buttons B21 to B23 is selected on the display resolution selection screen G2, the control unit 101 first selects “low” (selection) in step S21. It is determined which one of the button B21), “medium” (select button B22), and “high” (select button B23) is selected. If it is determined in step S21 that “low” has been selected, the control unit 101 proceeds to step S22. Further, when it is determined that “medium” is selected in step S21, the control unit 101 proceeds to step S23. In addition, when it is determined that “high” is selected in step S21, the control unit 101 proceeds to step S24.
In step S22, the control unit 101 reads out the average number (“0” in this embodiment) stored in the storage unit 103 in association with the display resolution “low” as a data table or the like, and newly sets the read average number. The average number a is set, and the process proceeds to step S25.
In step S23, the control unit 101 reads the average number (“2” in the present embodiment) stored in the storage unit 103 in association with the display resolution “medium” as the data table or the like, and the read average number is obtained. The control unit 101 sets the new average number a and proceeds to step S25. In step S24, the control unit 101 stores the average number stored in the storage unit 103 in association with the display resolution “high” as the data table or the like (in this embodiment, "4") is read out, the read average number is set as a new average number a, and the process proceeds to step S25.
In step S25, the control unit 101 stores the new average number a in the storage unit 103, and changes the average number a.
When the change of the average number a is completed, the control unit 101 executes a vehicle speed averaging process with the newly set average number a, and displays the averaged vehicle speed on the display operation unit 104 in the analog instrument image F1. .

Here, when the average number a is “0” corresponding to the display resolution “low”, the measurement value of the vehicle speed acquired in units of 1 km / h via the vehicle diagnosis connector 302 (a = 0). The display resolution value after the averaging process is 1 km / h. When the average number a is “2” corresponding to the display resolution “medium” (a = 2), the display resolution value after the averaging process is 0.5 km / h. As an example, when the measured values of the vehicle speed to be averaged are 1 km / h and 2 km / h, the measured value of the vehicle speed after the averaging process is 1.5 km / h (1 + 2/2 = 1.5). When the average number a is “4” corresponding to the display resolution “high” (a = 4), the value of the display resolution after the averaging process is about 0.2 km / h. As an example, when the measured value of the vehicle speed to be averaged is 1 km / h, 1 km / h, 1 km / h, and 2 km / h, the measured value of the vehicle speed after the averaging process is 1.25 km / h (1 + 1 + 1 + 2 /4=1.25), when calculating to the first decimal place, 1.2 km / h.
Therefore, the display resolution of the analog instrument image F1 can be changed by arbitrarily changing the average number a of the average processing. In this embodiment, when the display resolution is “medium”, the display resolution value is ½ compared to the case where the display resolution is “low”, and the display resolution is twice as high. It has become. In this embodiment, when the display resolution is “high”, the value of the display resolution is about 1/5 as compared with the case where the display resolution is “low”. 5 times higher. That is, when the display resolution is “medium”, the minimum movement angle of the pointer image F11 of the analog instrument image F1 is halved (full scale is 180 km / min) as compared with the case where the display resolution is “low”. h, the minimum movement angle is 1.5 ° to 0.75 °), and when the display resolution is “high”, the analog instrument image is compared with the case where the display resolution is “low”. The minimum movement angle of the pointer image F11 of F1 can be reduced to about 1/5 (when the full scale is 180 km / h, the minimum movement angle is changed from 1.5 ° to about 0.3 °). The vehicle information can be displayed with high display accuracy by changing the display resolution even when the value of is small.

The vehicle display device 1000 according to the present embodiment includes vehicle information acquisition means 200 that acquires vehicle information via a vehicle diagnosis connector 302 provided in the vehicle 300, and
Display operation unit 104 capable of displaying analog instrument images F1, F2 including pointer images F11, F12 and dial plate images F12, F22 having scales, and wireless interface 102 for receiving the vehicle information from vehicle information acquisition means 200 A vehicle display device comprising: a mobile phone 100 having a control unit 101 that causes the display operation unit 104 to display the vehicle information received by the wireless interface 102 as analog instrument images F1 and F2.
A mobile phone 100 for arbitrarily selecting the maximum display value and display resolution of the analog instrument images F1, F2 is provided.
The control unit 101 changes the design of the dial images F12 and F22 according to the selection result of the maximum display value by the mobile phone 100, and the display resolution by the mobile phone 100 according to the selection result of the display resolution. And a display resolution changing function for changing the display resolution.

  According to this, even when the vehicle information acquired via the vehicle diagnosis connector 302 is displayed in the analog instrument images F1 and F2, high display accuracy is achieved regardless of the design of the analog instrument images F1 and F2 or the design change. It becomes possible to display vehicle information.

Further, in the vehicle display device 1000, the control unit 101 averages the vehicle information received by the wireless interface 102 with a predetermined average number a, and causes the display operation unit 104 to display the analog instrument images F1 and F2, As the display resolution changing function, the average number a of the averaging processing is changed.
According to this, even if it is a case where vehicle information is acquired via the vehicle diagnosis connector 302, display resolution can be changed easily.

The program of the mobile phone 100 in this embodiment is
The control unit 101 receives the vehicle information from the vehicle information acquisition unit 200 that acquires the vehicle information via the vehicle diagnosis connector 302 provided in the vehicle 300 via the wireless interface 102, and displays the pointer images F11 and F12 on the display operation unit 104. Are displayed as analog instrument images F1 and F2 including dial images F12 and F22 having scales, and the dial images F12 and F22 are selected according to the selection result of the maximum display values of the analog instrument images F1 and F2 by the mobile phone 100. And functioning as a control unit having a dial changing function for changing the design and a display resolution changing function for changing the display resolution in accordance with a selection result of the display resolution of the analog instrument images F1 and F2 by the mobile phone 100. Features.

  According to this, even when the vehicle information acquired via the vehicle diagnosis connector 302 is displayed in the analog instrument images F1 and F2, high display accuracy is achieved regardless of the design of the analog instrument images F1 and F2 or the design change. It becomes possible to display vehicle information.

(Modification)
Next, a modification of this embodiment will be described. The modification differs from the above-described embodiment in that the control unit 101 has a minimum display resolution that is determined in advance according to the full scale selected when the design of the dial images F12 and F22 is changed by the dial change function. And when the selected display resolution is lower than the minimum display resolution, the display resolution of the analog instrument images F1 and F2 is changed to the minimum display resolution. . Hereinafter, although the case where the design of the analog instrument image F1 displaying the vehicle speed is changed will be described as an example, the same process is performed when the design of the analog instrument image F2 is changed. In addition, the program concerning the following processes shall be contained in a vehicle information display application.

FIG. 12 is a diagram showing processing of the control unit 101 when maintaining the minimum display resolution when the design of the dial image F12 of the analog instrument image F1 that displays the vehicle speed is changed in the modification of the present embodiment. is there.
When a full-scale selection operation (tap operation of the selection buttons B11 to B14 on the full-scale selection screen G1) is input by the display operation unit 104, the control unit 101 first selects a new display resolution in step S31. It is determined whether or not the display resolution is lower than a predetermined minimum display resolution according to the full scale. Specifically, as shown in FIG. 13, the storage unit 103 stores a data table including selectable full scale values and the minimum average number b associated therewith. In step S31, the control unit 101 reads out the average number a of the averaging process being selected stored in the storage unit 103 and the minimum average number b corresponding to the newly selected full scale value, and compares them. If the selected average number a is smaller than the minimum average number b, it is determined that the selected display resolution is lower than the minimum display resolution (step S31; Yes), and the process proceeds to step S32. The control unit 101 determines that the display resolution being selected is equal to or higher than the minimum display resolution when the average number a being selected in step S31 is equal to or higher than the lowest average number b (step S31; No). The process ends.
In step S32, the control unit 101 sets the average number b corresponding to the newly selected full scale value read in step S31 as the new average number a, and proceeds to step S33.
In step S33, the control unit 101 stores the new average number a in the storage unit 103, and changes the average number a.
When the change of the average number a is completed, the control unit 101 executes a vehicle speed averaging process with the newly set average number a, and displays the averaged vehicle speed on the display operation unit 104 in the analog instrument image F1. .

  By this processing, for example, when the display resolution being selected is “low” (when the average number is “0”) and the full scale of the analog instrument image F1 is changed to 180 km / h, the averaging processing is performed. Is automatically changed to “4”, which is the lowest average number b corresponding to 180 km / h. That is, the display resolution is automatically changed to “high”. Therefore, by maintaining the minimum display resolution, high display accuracy can be automatically maintained even when the full scale value is changed to a small value.

  The vehicle display device 1000 according to the modification of the present embodiment is predetermined according to the maximum display value selected when the control unit 101 changes the design of the dial images F1 and F2 in the dial changing function. If the selected display resolution is lower than the minimum display resolution, the display resolution of the analog instrument images F1 and F2 is changed to the minimum display resolution. To do.

  According to this, high display accuracy can be automatically maintained regardless of changes in the design of the analog instrument images F1 and F2, and convenience can be improved.

  In the present embodiment, the analog instrument image F1 at the time of displaying the vehicle speed has been described as an example. However, as the vehicle information, the display accuracy of the analog instrument image is felt to be low due to the full scale value as in the case of the vehicle speed. Increases the throttle opening and intake air temperature.

  In the present embodiment, the mobile phone 100 is used as the display means and the operation means. However, as the display means and the operation means, a dedicated display device or navigation device, a tablet device or a portable Internet device similar to the mobile phone, A PDA (Personal Digital Assistant) or the like may be used, and switch means including a push button switch as an operation means may be provided separately from the display means. In addition, the vehicle display device of the present invention may have a configuration in which the vehicle information acquisition unit and the display unit are integrally provided in one case.

  The present invention is suitable for a vehicle display device and a program for acquiring vehicle information via a vehicle diagnosis connector provided in the vehicle and displaying the vehicle information on a display unit.

1000 Display device for vehicle 100 Mobile phone (display means and operation means)
101 control unit 102 wireless communication interface (reception unit)
DESCRIPTION OF SYMBOLS 103 Memory | storage part 104 Display operation part 105 Communication part 106 Antenna part 200 Vehicle information acquisition means 201 Control part 202 Connector 203 CAN communication interface 204 Wireless communication interface 205 Storage part 300 Vehicle 301 Vehicle side ECU
302 Vehicle diagnostic connector

Claims (4)

Vehicle information acquisition means for acquiring vehicle information via a vehicle diagnostic connector provided in the vehicle;
A display unit capable of displaying an analog instrument image including a pointer image and a dial image having a scale, a receiving unit that receives the vehicle information from the vehicle information acquisition unit, and the vehicle information received by the receiving unit A display unit having a control unit that displays the analog instrument image on the display unit, and a display device for a vehicle,
An operation means for arbitrarily selecting the maximum display value and display resolution of the analog instrument image,
The control unit includes a dial change function for changing a design of the dial image according to a selection result of the maximum display value by the operation means, and the display resolution according to a selection result of the display resolution by the operation means. And a display resolution changing function for changing the display. The control unit averages the vehicle information received by the receiving unit with a predetermined average number and displays the analog instrument image on the display unit,
The vehicle display device according to claim 1, wherein the average number of the averaging processes is changed as the display resolution changing function.   The control unit compares the minimum display resolution determined in advance according to the maximum display value selected when the design of the dial image is changed in the dial change function and the display resolution being selected, 3. The vehicle according to claim 1, wherein when the display resolution being selected is lower than the minimum display resolution, the display resolution of the analog instrument image is changed to the minimum display resolution. 4. Display device. An analog including a pointer image and a dial plate image having a scale on a display unit by receiving the vehicle information from a vehicle information acquisition unit that acquires vehicle information via a vehicle diagnosis connector provided in the vehicle and receiving the computer. A display function for changing the design of the dial image in accordance with the selection result of the maximum display value of the analog instrument image by the operation means, and display resolution of the analog instrument image by the operation means. A program that functions as a control unit that includes a display resolution changing function that changes the display resolution in accordance with a selection result.

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