Combination instrument

Abstract

The utility model relates to the technical field of instruments, in particular to a combination instrument, which comprises a transparent panel and a bottom shell, a screen board is arranged between the transparent panel and the bottom shell, a surface patch is embedded on the outer side of the screen board, a circuit board is arranged between the surface patch of the transparent panel and the bottom shell, and the circuit board is connected with the transparent panel. An engine tachometer, a liquid crystal display screen, a speedometer and a gear lever are arranged on the screen board, and an integrated circuit system is integrated on the circuit board; through the arrangement of the microprocessor, the EEPROM, the signal input and output system, the JTAG interface, the LED indicating lamp system, the liquid crystal display system, the pointer control system, the gear lever switching system, the CAN communication system, the buzzer alarm system and the integrated circuit system, the combined instrument solves the problems that when an existing combined instrument is used, the combined instrument is various in variety, and the use cost is low. The problems that software package errors and repair are prone to occurring, the management cost is high, meanwhile, efficiency is low, wrong configuration information is prone to occurring, and the repair probability is increased are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of instruments, in particular to a combination instrument. Background Art

[0002] Medium and heavy trucks refer to large-tonnage, high-power commercial vehicles (N2\N3 categories), which are mainly used to transport heavy goods and construction materials. According to different uses, they can be divided into tractors, dump trucks, trucks, special-purpose vehicles, etc.; according to different power fuels, they can be divided into fuel vehicles, pure electric vehicles, hydrogen fuel vehicles, natural gas vehicles, etc.; according to the drive form, they can be divided into 4*2, 6*2, 6*4, 8*2, 8*4 and other models; according to the characteristics of the transported goods, the conditions of the transport roads, the distance of the transport, the temperature environment of the transport area, the altitude, etc., there will be different power chain configurations. According to the models with different loads and different maximum speeds, the functional configurations required by regulations are also different, such as tire pressure detection TPMS, ABS, ASR, EBS, ESC, FCWS, LDWS, AEBS. In addition, the speedometer, tachometer, fuel type, information status and alarms of various control systems need to be displayed on the instrument cluster, resulting in large differences in the content and information displayed by the instrument cluster. This leads to a wide variety of instrument clusters, which brings great troubles to development management, procurement management, material management, production management, and after-sales accessories, and increases the overall production management cost.

[0003] However, when the existing combination instruments are used, there are many types of combination instruments, and the efficiency of research and development management, procurement management and production management is relatively low, the indirect management cost is high, and there are also management problems in research and development management and production management. Software package errors and rework are prone to occur, the management cost is high, which will increase the production labor cost, and the efficiency is low, which is easy to cause erroneous configuration information and increase the probability of rework. Therefore, a combination instrument is set. Summary of the invention

[0004] The main purpose of the utility model is to provide a combination instrument. The utility model solves the problems of the existing combination instruments, such as a wide variety of combination instruments, easy occurrence of software package errors and repairs, high management costs, low efficiency, easy occurrence of erroneous configuration information, and increased probability of repairs, by arranging a microprocessor, an EEPROM memory, a signal input and output system, a JTAG interface, an LED indicator light system, a liquid crystal display system, a pointer control system, a gear lever switching system, a CAN communication system, a buzzer alarm system and an integrated circuit system.

[0005] The technical solution adopted by the utility model to solve its technical problems is a combined instrument, comprising a transparent panel and a bottom shell, a screen plate is arranged between the transparent panel and the bottom shell, a surface sticker is embedded on the outer side of the screen plate, a circuit board is arranged between the transparent panel surface sticker and the bottom shell, an engine tachometer, a liquid crystal display screen, a speedometer, and a gear lever are installed on the screen plate, an integrated circuit system is integrated on the circuit board, and the integrated circuit system includes a microprocessor, an EEPROM memory, an instrument signal input and output system, a JTAG interface, an LED indicator light system, a liquid crystal display system, a pointer control system, a gear lever switching system, a CAN communication system and a buzzer alarm system.

[0006] By adopting the above technical solution, for the optional instrument cluster display project, the instrument cluster software development is set to select and call according to specific information. After the instrument cluster is powered on for the first time, the instrument cluster begins to poll the characteristic message ID and specific information of each system on the receiving network (there is a functional system that needs to send a message) to call the display module function. After a complete polling setting, the configuration information is locked. In order to facilitate the reconfigurable requirements of the instrument cluster, the instrument cluster can re-polling and judging the setting software function by receiving specific byte information of a specific message ID, so that the instrument cluster has flexibility. Therefore, the developer only needs to set up a kind of instrument cluster, and automatically lock the instrument cluster function configuration according to the specific information of the specific message ID of the CAN network. The entire configuration process does not require manual participation, which is fast, accurate and efficient, bringing great management convenience to R&D, procurement, production, and spare parts, improving product production efficiency and indirectly reducing costs. At the same time, it can be reconfigured according to factory needs, with high flexibility.

[0007] Specifically, the microprocessor is communicatively connected with the EEPROM memory, the JTAG interface, and the CAN communication system respectively.

[0008] By adopting the above technical solution, the microprocessor is respectively connected to the EEPROM memory, the JTAG interface, and the CAN communication system for communication, so that the signal transmission between the microprocessor and the EEPROM memory, the JTAG interface, and the CAN communication system is interactive, so that the devices in the combination meter can complete the communication.

[0009] Specifically, the microprocessor is electrically connected to the pointer control system, the instrument signal input and output system, the gear lever switching system, the LED indicator light system, the liquid crystal display system, the buzzer alarm system, and the EEPROM memory.

[0010] By adopting the above technical solution and electrically connecting them through a microprocessor, the pointer control system, instrument signal input and output system, gear lever switching system, LED indicator light system, liquid crystal display system, buzzer alarm system and EEPROM memory can work normally.

[0011] Specifically, the speedometer and the engine tachometer are symmetrically arranged on both sides of the liquid crystal display screen, and the speedometer is located on the left side of the engine tachometer.

[0012] By adopting the above technical solution, the speedometer and the engine tachometer are arranged on both sides of the liquid crystal display screen, which is convenient for observing the speedometer and the engine tachometer.

[0013] Specifically, the gear lever is located at the lower side of the liquid crystal display screen.

[0014] By adopting the above technical solution, the gear lever is located on the LCD screen, which is convenient for observing the LCD screen.

[0015] Beneficial effects of the utility model:

[0016] The utility model discloses a combination instrument, for optional combination instrument display items, set in combination instrument software development to select and call according to specific information. After the combination instrument is powered on for the first time, the combination instrument starts to poll and receive characteristic message IDs and specific information of each system on the network (a functional system needs to send a message) to call the display module function. After a complete polling setting, the configuration information is locked. In order to facilitate the need for the combination instrument to be reconfigurable, the combination instrument can re-polling and judging the setting software function by receiving specific byte information of a specific message ID, so that the combination instrument has flexibility. The combination instrument will automatically call the corresponding display interface and the system signal or alarm information that needs to be displayed according to the automatic acquisition of relevant information, so that various models and different configurations share a combination instrument, which greatly reduces the variety of products, greatly reduces the cost of development management, procurement management, material management, production configuration, and after-sales spare parts, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the overall structure of a combination instrument of the utility model;

[0019] Figure 2 This is a schematic diagram of the bottom shell structure of a combination instrument of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of an integrated circuit system of a combination instrument of the utility model;

[0021] Figure 4 This is a schematic diagram of the process of a combination instrument of the utility model;

[0022] In the figure: 1. Speedometer; 2. Transparent panel; 4. Surface sticker; 5. LCD screen; 6. Engine tachometer; 7. Shift lever; 8. Screen board; 10. Bottom shell; 12. Microprocessor; 13. EEPROM memory; 14. Signal input and output system; 15. JTAG interface; 16. LED indicator light system; 17. LCD display system; 18. Pointer control system; 19. Shift lever switching system; 20. CAN communication system; 21. Buzzer alarm system; 22. Integrated circuit system. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] In order to improve, as an embodiment of the utility model, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a combination instrument described in the utility model includes a transparent panel 2 and a bottom shell 10, a screen plate 8 is arranged between the transparent panel 2 and the bottom shell 10, a surface sticker 4 is embedded on the outer side of the screen plate 8, a circuit board is arranged between the surface sticker 4 of the transparent panel 2 and the bottom shell 10, an engine tachometer 6, a liquid crystal display screen 5, a speedometer 1, and a gear lever 7 are installed on the screen plate 8, an integrated circuit system 22 is integrated on the circuit board, and the integrated circuit system 22 includes a microprocessor 12, an EEPROM memory 13, an instrument signal input and output system 14, a JTAG interface 15, an LED indicator light system 16, a liquid crystal display system 17, a pointer control system 18, a gear lever switching system 19, a CAN communication system 20 and a buzzer alarm system 21.

[0025] When in use, for the optional instrument cluster display items, set the selection and call according to specific information in the instrument cluster software development. After the instrument cluster is powered on for the first time, the instrument cluster begins to poll the characteristic message ID and specific information of each system on the receiving network (there is a functional system that needs to send a message) to call the display module function. After a complete polling setting, the configuration information is locked. In order to facilitate the reconfiguration of the instrument cluster, the instrument cluster can re-polling and judging the setting software function by receiving specific byte information of a specific message ID, making the instrument cluster flexible. Therefore, the developer only needs to set up a kind of instrument cluster, and automatically lock the instrument cluster function configuration according to the specific information of the specific message ID of the CAN network. The entire configuration process does not require manual participation, which is fast, accurate and efficient, bringing great management convenience to R&D, procurement, production, and spare parts, improving product production efficiency and indirectly reducing costs. At the same time, it can be reconfigured according to factory needs, with high flexibility.

[0026] In order to enable the devices in the combined instrument to complete the communication, for example, Figure 1 , Figure 3 As shown, the utility model also includes that the microprocessor 12 is communicatively connected with the EEPROM memory 13, the JTAG interface 15, and the CAN communication system 20 respectively.

[0027] When in use, the microprocessor 12 is respectively connected to the EEPROM memory 13, the JTAG interface 15, and the CAN communication system 20 for communication, so that the signal transmission between the microprocessor 12 and the EEPROM memory 13, the JTAG interface 15, and the CAN communication system 20 is interactive, so that the devices in the instrument cluster complete the communication.

[0028] In order for the device to work properly, for example, Figure 1 , Figure 3 As shown, the utility model also includes that the microprocessor 12 is electrically connected to the pointer control system 18, the instrument signal input and output system 14, the gear lever switching system 19, the LED indicator light system 16, the liquid crystal display system 17, the buzzer alarm system 21, and the EEPROM memory 13 respectively.

[0029] When in use, they are electrically connected through the microprocessor 12, so that the pointer control system 18, the instrument signal input and output system 14, the gear lever switching system 19, the LED indicator light system 16, the liquid crystal display system 17, the buzzer alarm system 21, and the EEPROM memory 13 work normally.

[0030] In order to observe the speedometer 1 and the engine tachometer 6, for example, Figure 1 As shown, the utility model also includes that the speedometer 1 and the engine tachometer 6 are symmetrically arranged on both sides of the liquid crystal display screen 5, and the speedometer 1 is located on the left side of the engine tachometer 6.

[0031] When in use, the speedometer 1 and the engine tachometer 6 are arranged on both sides of the liquid crystal display screen 5, so as to facilitate observation of the speedometer 1 and the engine tachometer 6.

[0032] In order to observe the liquid crystal display screen 5, for example, Figure 1 As shown, the utility model also includes that the gear lever 7 is located at the lower side of the liquid crystal display screen 5.

[0033] When in use, the gear lever 7 is located on the liquid crystal display screen 5 , which is convenient for observing the liquid crystal display screen 5 .

[0034] When the utility model is in use, the first step is: after the combination instrument is powered on with K15 (power on), it starts to self-check whether it has been configured. If not configured, it enters the first configuration step, and then queries the specific message ID of the display interface style, follows up with different characteristic message IDs to determine the display interface style of the combination instrument, such as: the display interface of specific models such as fuel vehicle models, hydrogen fuel vehicle models, and pure electric vehicle models, and then queries the tire pressure monitoring system (TPMS) characteristic message ID. If the characteristic message ID is present, the display interface displays the display interface module and alarm function related to the tire pressure; if the characteristic message ID is not present, the display and alarm function of the module are not configured, and then queries the front collision warning (FCWS) and lane departure warning (LDWS) (hereinafter referred to as dual warning function) characteristic message IDs. If the characteristic message ID is present, the display interface displays the display interface module and alarm function related to the dual warning function; if the characteristic message ID is not present, The display and alarm functions of the module are not configured, and then the electronic stability control system (ESC) characteristic message ID is queried. If the characteristic message ID is present, the display interface is the display interface module and alarm function related to the electronic stability control system; if the characteristic message ID is not present, the display and alarm functions of the module are not configured, and then the electronic braking system (EBS) characteristic message ID is queried. If the characteristic message ID is present, the display interface is the display interface module and alarm function related to the electronic braking system; if the characteristic message ID is not present, the display and alarm functions of the module are not configured, and then the characteristic message ID of each system is queried one by one according to the function configuration list set by the instrument cluster to decide whether to call the display and alarm functions of the module, until the last system ID message is queried. After the configuration is successful, a configuration flag is built in to determine whether the characteristic message ID configuration needs to be queried when the power is turned on again;

[0035] When the instrument cluster is powered on with K15 (power on), it starts to self-check whether it has been configured. If not, it enters the first configuration step. If it has been configured, it checks whether there is a reset message ID (the reset message is a custom message sent by the OEM through a dedicated device or the Internet of Vehicles platform) requiring reconfiguration. If there is no such message, it enters the normal display. If there is a reset message, reset the configuration flag of the instrument cluster, re-query the specific message ID of the display interface style, follow up with different characteristic message IDs to determine the display interface style of the instrument cluster, such as: the display interface of specific models such as fuel vehicles, hydrogen fuel vehicles, and pure electric vehicles, and then query the tire pressure monitoring system (TPMS) characteristic message ID. If the characteristic message ID is available, the display interface will display the display interface module and alarm function related to the tire pressure; if the characteristic message ID is not available, the display and alarm functions of the module will not be configured, and then query the front collision warning (FCWS) and lane departure warning (LDWS) (hereinafter referred to as dual warning functions) characteristic message ID. If the characteristic message ID is available, the display interface will display the display interface module and alarm function related to the dual warning function; if the characteristic message ID is not available, the display and alarm functions of the module will not be configured, and then Then query the electronic stability control system (ESC) characteristic message ID. If the characteristic message ID is present, the display interface will be the display interface module and alarm function related to the electronic stability control system; if the characteristic message ID is not present, the display and alarm functions of the module will not be configured. Then query the electronic braking system (EBS) characteristic message ID. If the characteristic message ID is present, the display interface will be the display interface module and alarm function related to the electronic braking system; if the characteristic message ID is not present, the display and alarm functions of the module will not be configured. Subsequently, query the characteristic message ID of each system one by one according to the function configuration list set by the instrument cluster to decide whether to call the display and alarm functions of the module, until the last system ID message query is completed. After the configuration is successful, a configuration flag is built in to determine whether the characteristic message ID configuration needs to be queried when the power is turned on again.

[0036] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A combination instrument, characterized in that: The invention comprises a transparent panel (2) and a bottom shell (10), wherein a screen plate (8) is arranged between the transparent panel (2) and the bottom shell (10), a surface sticker (4) is embedded on the outer side of the screen plate (8), a circuit board is arranged between the surface sticker (4) of the transparent panel (2) and the bottom shell (10), an engine tachometer (6), a liquid crystal display screen (5), a speedometer (1), and a gear lever (7) are mounted on the screen plate (8), and an integrated circuit system (22) is integrated on the circuit board, and the integrated circuit system (22) comprises a microprocessor (12), an EEPROM memory (13), an instrument signal input and output system (14), a JTAG interface (15), an LED indicator light system (16), a liquid crystal display system (17), a pointer control system (18), a gear lever switching system (19), a CAN communication system (20), and a buzzer alarm system (21).

2. A combination instrument according to claim 1, characterized in that: The microprocessor (12) is communicatively connected to the EEPROM memory (13), the JTAG interface (15), and the CAN communication system (20) respectively.

3. A combination instrument according to claim 1, characterized in that: The microprocessor (12) is electrically connected to the pointer control system (18), the instrument signal input and output system (14), the gear lever switching system (19), the LED indicator light system (16), the liquid crystal display system (17), the buzzer alarm system (21), and the EEPROM memory (13).

4. A combination instrument according to claim 1, characterized in that: The vehicle speedometer (1) and the engine tachometer (6) are symmetrically arranged on both sides of the liquid crystal display screen (5), and the vehicle speedometer (1) is located on the left side of the engine tachometer (6).

5. The combination instrument according to claim 1, characterized in that: The gear lever (7) is located at the lower side of the liquid crystal display screen (5).

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