A control system for automotive navigation product assembly

Abstract

The application provides a control system for assembling automobile navigation products, which comprises a main control module, a switching module and a communication module, the main control module is connected with the switching module through electric signal, information transmission between the main control module and the switching module is realized, the switching module is connected with the communication module through electric signal, switching of different communication modes by the switching module is realized, and the communication module is used for communication between the main control and the automobile navigation assembly product. The control system realizes four communication modes of CAN communication, RS232 communication, RS485 communication and USB communication, can configure different assembled automobile navigation products, has high adaptability and stable communication.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of driving navigation, in particular to a control system for assembling automobile navigation products. BACKGROUND

[0002] In recent years, the automobile navigation system has developed very rapidly. At present, people can not only choose the navigation system as an option when purchasing a new car, but also can install the device on the existing car, or even configure a mobile satellite navigation system, or take it to go wild, climb a mountain. The satellite navigation system for guiding the driver of the car has the following four important factors: satellite signal, signal reception, signal processing and map database. The vehicle navigation has the function of GPS global satellite positioning system, and can know the exact position at any time when driving the car.

[0003] Because different automobile navigation products have different processes and architectures when assembling, but the functions realized are the same, in the prior art, different products need to be configured with different controllers and control programs when assembling due to different product models and different communication modes, resulting in large task quantity and low work efficiency. SUMMARY

[0004] To solve the above technical problems, the present application provides a control system for assembling automobile navigation products, which realizes CAN communication, RS232 communication, RS485 communication and USB communication, can configure different assembled automobile navigation products, has high adaptability and stable communication.

[0005] The technical scheme adopted by the present application is: a control system for assembling automobile navigation products, comprising a main control module, a switching module and a communication module, the main control module is electrically connected with the switching module to realize information transmission between the main control module and the switching module, the switching module is electrically connected with the communication module to realize switching of different communication modes by the switching module, and the communication module is used for communication between the main control and the automobile navigation assembly product.

[0006] Further, the communication module comprises an RS232 communication unit, an RS485 communication unit, a USB communication unit and a CAN communication unit, the RS232 communication unit, the RS485 communication unit and the USB communication unit are electrically connected with the switching module to realize information transmission between the automobile navigation product and the main control module, and the CAN communication module is electrically connected with the main control module to acquire information of the automobile navigation product to realize detection of the automobile navigation product.

[0007] In the application, the input module is electrically connected with the main control module, and the input module is used for inputting the position information of the car navigation product.

[0008] In the application, the power module is electrically connected with the main control module, the switching module and the communication module, and is used for providing power for each module.

[0009] Further, the main control module comprises a core board U2 and a core board connector M201, the core board connector M201 is connected with the core board U2 through the plug strip J2 and J3, the core board connector M201 is connected with a communication switch, the communication switch comprises automatic switches SW202 and manual switches SW201, SW203, SW209 and SW210, and the communication switch is used for realizing the setting of the communication mode.

[0010] The switching module comprises a chip U301, X and Y ports of the chip U301 are connected with PA9 and PA10 ports of the core board connector M201 in correspondence, respectively, are used for realizing the information transmission between the chip U301 and the main control module, X0, X1, Y0 and Y1 ports of the chip U301 are connected with the RS232 communication unit, and are used for realizing the signal transmission between the chip and the RS232 communication unit, X2 and Y2 ports of the chip U301 are connected with the RS485 communication unit, and are used for realizing the signal transmission between the chip U301 and the RS485 communication unit, and X3 and Y3 ports of the chip U301 are connected with the USB communication unit, and are used for realizing the signal transmission between the chip U301 and the USB communication unit.

[0011] In the application, preferably, the RS232 communication unit comprises a chip U302, the model of the chip U302 is MAX3232ESE, the chip U302 is connected with a 232 interface J301 and a 232 interface J302, and the interface J301 and the interface J302 are used for PC or product communication.

[0012] In the application, preferably, the RS485 unit comprises a chip U401, the model of the chip U401 is MAX485E, 2 and 3 pins of the chip U401 are connected with a communication bus, 6 and 7 pins of the chip U401 are connected with a 485 interface J401, and the 485 interface J401 is used for realizing product communication.

[0013] In the present application, preferably, the USB communication unit comprises a chip U501, the model of the chip U501 is CH340E, the 8th and 9th pins of the chip U501 are connected with the 2nd and 15th pins of the chip U301 in correspondence, the 7th pin of the chip U501 is connected with a USB interface J501, the 2nd and 3rd pins of the USB interface J501 are connected with the 2nd and 1st pins of the chip U501 in correspondence, and the USB interface J501 is used for realizing PC communication.

[0014] In the present application, preferably, the CAN communication unit comprises a chip U601, the model of the chip U601 is TJA1051F, the 1st and 4th pins of the chip U601 are connected with the 38th and 37th pins of the core board connector M201 in correspondence, the 6th and 7th pins of the chip U601 are connected with a CAN interface, and the CAN interface is used for realizing product communication.

[0015] The present application has the advantages and positive effects that:

[0016] The control system is provided with four communication units, i.e., a CAN communication unit, an RS232 communication unit, an RS485 communication unit and a USB communication unit, the four communication units provide four different communication modes, different assembled automobile navigation products can be configured, the degree of adaptation is high, and the communication is stable. In the system, the RS232 communication and the RS485 communication can be selected according to different assembly processes of the automobile navigation products, and are mainly used for obtaining the program version information of the automobile navigation products. Since the 232 interface is not convenient for use in notebook computers and other electronic devices, the USB communication unit is mainly used for realizing PC communication. In the system, the CAN communication unit is mainly used for obtaining various data and state information of the automobile navigation products, so as to realize the test of the automobile navigation products. Therefore, the control system is suitable for automobile navigation products with different communication modes, and it is not necessary to configure products with different communication modes separately, the automation control is realized in multiple processes, the time wasted by manual operation is saved, and the error operation is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application together with the embodiments thereof, and explain the present application, and do not constitute a limitation of the present application. In the drawings:

[0018] Figure 1 is the overall block diagram of the present application;

[0019] Figure 2 is the power module circuit diagram of the present application;

[0020] Figure 3 is the circuit diagram of the core board U2 in the master control module of the present application;

[0021] Figure 4 is the circuit diagram of the core board connector M201 in the master module of the present application;

[0022] Figure 5 is the circuit diagram of the alarm module of the present application;

[0023] Figure 6 is the circuit diagram of the switching module and RS232 communication unit of the present application;

[0024] Figure 7 is the circuit diagram of the RS485 communication unit of the present application;

[0025] Figure 8 is the circuit diagram of the USB communication unit of the present application;

[0026] Figure 9 is the circuit diagram of the CAN communication unit of the present application;

[0027] Figure 10 is the circuit diagram of the input module of the present application;

[0028] Figure 11 is the circuit diagram of the output module of the present application. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0030] It should be noted that when a component is referred to as being "on" another component, it can be directly on the other component or there can be intervening components. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or there can be intervening components. When a component is referred to as being "disposed on" another component, it can be directly disposed on the other component or there can be intervening components. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for illustrative purposes only.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0032] like Figures 1 to 11 As shown, the present invention provides a control system for assembling car navigation products, such as Figure 1 As shown, the system comprises a main control module, a switching module, and a communication module. The main control module is electrically connected to the switching module to enable information transmission between the two modules. The switching module is electrically connected to the communication module to enable the switching module to switch between different communication modes. The communication module is used for communication between the main control module and the assembled car navigation product. Specifically, in this embodiment, the communication module is equipped with different communication modes. The main control module can directly control the switching module to switch the communication mode according to the different communication modes of different car navigation products, thereby enabling communication between the car navigation products. This system has high adaptability and stable communication.

[0033] Furthermore, the system also includes an input module and an output module. The input module is electrically connected to the main control module for inputting location information of the car navigation product, and the output module is electrically connected to the main control module for controlling the action of the electronic control device.

[0034] Furthermore, the system also includes a power module and an alarm module. The power module is electrically connected to the main control module, the switching module, and the communication module to provide power to each module. The alarm module is electrically connected to the main control module to generate an alarm for communication anomalies.

[0035] In this embodiment, further, the communication module includes the RS232 communication unit, the RS485 communication unit, the USB communication unit and the CAN communication unit. The RS232 communication unit, the RS485 communication unit and the USB communication unit are all electrically connected to the switching module for realizing the transmission and reception of information between the car navigation product and the main control module. The CAN communication module is electrically connected to the main control module for acquiring the information of the car navigation product to realize the detection of the car navigation product.

[0036] In the embodiment, the communication module provides four communication modes of RS232, RS485, USB and CAN, the RS232 communication and the RS485 communication can be selected according to different assembly processes of the automobile navigation products, and are mainly used for obtaining program version information of the automobile navigation products. Since the 232 interface is inconvenient for use in electronic devices such as notebook computers, the USB communication unit is mainly used for realizing PC communication. In the system, the CAN communication unit is mainly used for connecting with the automobile navigation products, and is used for obtaining the state and various data of the automobile navigation products, such as CAN information messages, and transmitting the data to the main control module to realize detection of the automobile navigation products. Therefore, the control system is suitable for automobile navigation products with different communication modes, and does not need to be separately configured for products with different communication modes, realizes automatic control of multiple processes, saves time wasted by manual operation, and reduces error operation.

[0037] In the embodiment, specifically, as shown in Figure 2 The power module includes a chip U101, the model of the chip U101 is TPS5430DDA, the pin 7 of the chip U101 is connected with the pin 1 of a chip J101, the chip J101 is an alternating current 12V power supply provided externally, the chip U101 is a power conversion chip, and is used for converting the 12V voltage provided by the chip J01 into 5V. The pin 1 of the chip U101 is connected with a chip U102 through a capacitor C103 and an inductor L101, the model of the chip U102 is AZ1117, and the chip U102 is used for converting the 5V voltage into 3.3V to supply power to each chip in the system.

[0038] As shown in Figure 3 , Figure 4As shown, the main control module includes a core board U2 and a core board connector M201 connected with the core board U2 through the plug strips J2 and J3, the core board U2 is of the model STM32F072RBT, the development board has low power consumption and simple development environment and is easy to operate. The 1st, 19th, 32nd, 64th, 13th and 48th pins of the core board U2 are used for connecting a 3.3V power supply provided by a power module, the 7th pin of the core board U2 is connected with a reset switch SW1 through a capacitor C5 and a resistor R3, for resetting the core board U2, the 3rd and 4th pins of the core board U2 are connected with a first oscillation circuit composed of a resistor R2, a capacitor C3, a capacitor C4 and a crystal oscillator Y1, the 5th and 6th pins of the core board U2 are connected with a second oscillation circuit composed of a resistor R1, a capacitor C1, a capacitor C2 and a crystal oscillator Y2, the first and second oscillation circuits are used for providing basic clock signals to make the oscillation frequency of the circuit more stable. The 61st and 62nd pins of the core board U2 are connected with a chip U4, the chip U4 is of the model AT24CS02-SSHM, the chip U4 is a storage device used for storing communication information and capable of storing the information without disappearing in the case of power failure.

[0039] The core board connector M201 is connected with a communication switch, the communication switch includes an automatic switch SW202 and manual switches SW201, SW203, SW209 and SW210, and is used for setting the communication mode. The manual switches SW201, SW203, SW209 and SW210 correspond to control RS232, RS485, USB and CAN respectively, and when manually switched, only the manual switch corresponding to the selected communication mode needs to be pressed to make the switch closed, so as to transmit the selected communication information to the core board connector M201, and the core board connector M201 controls the switching module to switch the corresponding communication mode, so as to realize the communication of the product. The automatic switch SW202 has four branches built-in, which are used for automatically controlling the above four communication modes. The 40th to 47th pins of the core board connector M201 are used for connecting an input module, so as to realize the signal transmission with the input module, and the 4th to 11th pins of the core board connector M201 are connected with an output module, so as to realize the output signal of the core board connector M201 controlling the output module.

[0040] Further, as shown in Figure 5 The alarm module includes an alarm BZ201 connected with the 50th pin of the core board connector M201 through a triode Q201 and a resistor R213, when the communication is abnormal or the circuit fails, the core board connector M201 outputs a signal to make the triode Q201 conduct, and the alarm BZ201 sends an alarm signal to prompt the operator that a failure occurs.

[0041] AsFigure 6 As shown in the figure, the switching module comprises a chip U301, the model of the chip U301 is CD4052, the X and Y ports of the chip U301 are connected with the PA9 and PA10 ports of the core board connector M201 respectively, for realizing the information transmission between the chip U301 and the core board connector M201, the X0, X1, Y0 and Y1 ports of the chip U301 are connected with the RS232 communication unit, for realizing the signal transmission between the chip U301 and the RS232 communication unit, the X2 and Y2 ports of the chip U301 are connected with the RS485 communication unit, for realizing the signal transmission between the chip U301 and the RS485 communication unit, and the X3 and Y3 ports of the chip U301 are connected with the USB communication unit, for realizing the signal transmission between the chip U301 and the USB communication unit. Specifically, the chip U301 is an analog switch, which mainly realizes the signal switching function in the signal link by controlling the switching mode of the MOS tube.

[0042] In the application, preferably, the RS232 communication unit comprises a chip U302, the model of the chip U302 is MAX3232ESE, the 11th, 10th, 12th and 9th pins of the chip U302 are connected with the 12th, 14th, 1st and 5th pins of the chip U301 respectively, the 13th and 14th pins of the chip U302 are connected with a 232 interface J301, and the 7th and 8th pins are connected with a 232 interface J302, the interface J301 and the interface J302 are used for the communication between the PC or the automobile navigation product.

[0043] As shown in the figure, Figure 7 In the application, preferably, the RS485 unit comprises a chip U401, the model of the chip U401 is MAX485E, the 2nd and 3rd pins of the chip U401 are connected with a communication bus, the communication bus is used for realizing the transmission and transfer of signals, the 6th and 7th pins of the chip U401 are connected with a 485 interface J401, and the 485 interface J401 is used for realizing the communication between the controller and the automobile navigation product.

[0044] As shown in the figure, Figure 8 In the application, preferably, the USB communication unit comprises a chip U501, the model of the chip U501 is CH340E, the 8th and 9th pins of the chip U501 are connected with the 2nd and 15th pins of the chip U301 respectively, the 7th pin of the chip U501 is connected with a USB interface J501, the 2nd and 3rd pins of the USB interface J501 are connected with the 2nd and 1st pins of the chip U501 respectively, and the USB interface J501 is used for realizing the PC communication. Since the notebook computer and other electronic products are not convenient for communication by using the 232 interface, the USB interface is selected to facilitate the communication of the notebook computer and other electronic products.

[0045] As Figure 9 shown in the application, preferably, the CAN communication unit comprises a chip U601, the model of the chip U601 is TJA1051F, the 1st and 4th pins of the chip U601 are connected with the 38th and 37th pins of the core board connector M201 in correspondence, for realizing the signal transmission between the chip U601 and the master control module, the 6th and 7th pins of the chip U601 are connected with a CAN interface, the CAN interface is used for realizing the product communication. Specifically, since the automobile navigation product is provided with the CAN communication, in the embodiment, the CAN interface is connected with the automobile navigation product, for obtaining the state and various data of the automobile navigation product, such as the CAN information message, etc., the data is transmitted to the master control module for detecting the data, and the detection result is uploaded to the cloud.

[0046] Further, as Figure 10 shown, the input module comprises a plurality of same input circuits, the input circuit comprises a coupler U701D, the 7th and 8th pins of the coupler U701D are connected with a photoelectric sensor J701, the photoelectric sensor J701 is used for assisting in detecting the position of the navigation product, the 10th pin of the coupler U701D is connected with the 40th pin of the core board connector M201, for transmitting the input signal to the master control module, specifically, 8-way optical coupling isolation circuits are provided in the embodiment, which can be selected according to different assembly processes, the detection signal of the photoelectric sensor J701 is isolated through the coupler U701D, the stability of the signal transmission is increased, and then the position information of the navigation product is transmitted to the master control module.

[0047] Further, as Figure 11 shown, the output module comprises a plurality of same output circuits, the output circuit comprises a coupler U801A, the 2nd pin of the coupler U801A is connected with the 8th pin of the core board connector M201, the 16th pin of the coupler U801A is connected with a MOS tube Q801 through a resistor R804, the MOS tube Q801 is connected with a ground through a light emitting diode D801 and a resistor R807. Specifically, the master control module transmits a control signal to the coupler U801A for signal isolation, the control signal is output from the 1st pin of the coupler U801A to control the action of an external device, and the external device is usually a relay, an electromagnetic valve or a cylinder used for fixing the automobile navigation product.

[0048] The working principle of the application is as follows:

[0049] The control system is suitable for assembling engineering of automobile navigation products, specifically, the input module is provided with 8 photoelectric sensors J701 to J708, which can be selected according to different assembly needs, the photoelectric sensors J701 to J708 are used for positioning the automobile navigation products, the detection signal of the photoelectric sensor J701 is isolated through the coupler U701D to increase the stability of signal transmission, the isolated signal is transmitted to the main control module, the main control module controls the output signal of the output module according to the information to control the action of external devices such as relays, electromagnetic valves and the like. Among them, the output module is arranged opposite to the input module, and can be selected from one to multiple according to the assembly process of different navigation products.

[0050] In the embodiment, the control system is provided with four communication modes to realize communication between the controller and different automobile navigation products, servers and computer terminals, specifically, the communication mode is set according to different automobile navigation products, for example, when RS232 communication is selected, the manual switch SW201 is pressed, the control module transmits the information to the switching module, the switching module switches the communication mode to make the MOS tube of the relative communication mode conductive, the RS232 communication unit is connected, and the communication between the controller and the automobile navigation product is realized. The RS232 communication unit and the RS485 communication unit are selected according to the assembly process of different automobile navigation products, mainly used for obtaining the program version information of the automobile navigation product, and the corresponding communication interface such as the 485 interface J401 can also be used for networking, connecting the server to realize remote control. Since the RS232 interface is not convenient for communication with electronic devices such as notebook computers, the USB interface in the USB communication unit can be selected to realize communication between the controller and the electronic device. The automobile navigation product is provided with a CAN communication, in the embodiment, the CAN interface is mainly used for connecting with the automobile navigation product, used for obtaining the state and various data of the automobile navigation product, such as CAN information message, the data is transmitted to the main control module for detection, and the detection result is uploaded to the cloud. Therefore, the control system is suitable for automobile navigation products with different communication modes, does not need to be configured separately for products with different communication modes, has high adaptability, and the communication is stable.

[0051] The embodiments of the application are described in detail above, but the content described is only the preferred embodiments of the application, and cannot be considered as limiting the scope of the application. Any equivalent changes and improvements made within the scope of the application should still belong to the scope covered by the patent.

Claims

1. A control system for assembly of a car navigation product, characterized by, The application relates to a communication module for a car navigation product, which comprises a main control module, a switching module and a communication module, wherein the main control module is connected with the switching module through electric signals, information transmission between the main control module and the switching module is realized, the switching module is connected with the communication module through electric signals, switching of different communication modes by the switching module is realized, and the communication module is used for communication between the main control module, a car navigation product, a server and a computer. The communication module comprises an RS232 communication unit, an RS485 communication unit, a USB communication unit and a CAN communication unit, the RS232 communication unit, the RS485 communication unit and the USB communication unit are connected with the switching module through electric signals, information transmission between the car navigation product and the main control module is realized, the CAN communication unit is connected with the main control module through electric signals, and car navigation product information is acquired to realize detection of the car navigation product. The RS232 communication unit and the RS485 communication unit are selected according to different assembly processes of the car navigation product, and program version information of the car navigation product is acquired.

2. The control system for assembling a car navigation product according to claim 1, wherein The application further comprises an input module and an output module, the input module is connected with the main control module through electric signals, the input module is used for inputting position information of the car navigation product, the output module is connected with the main control module through electric signals, and the output module is used for controlling actions of electric control devices.

3. The control system for assembling a car navigation product according to claim 1, characterized in that: The application further comprises a power module, the power module is connected with the main control module, the switching module and the communication module through electric signals, and the power module is used for providing power supply for the modules.

4. The control system for assembling a car navigation product according to claim 2, wherein The main control module comprises a core board U2 and a core board connector M201, the core board connector M201 is connected with the core board U2 through plug-in strips J2 and J3, the core board connector M201 is connected with a communication switch, the communication switch comprises automatic switches SW202 and manual switches SW201, SW203, SW209 and SW210, and the communication switch is used for setting communication modes.

5. The control system for assembling a car navigation product according to claim 4, wherein The switching module comprises a chip U301, X and Y ports of the chip U301 are connected with PA9 and PA10 ports of the core board connector M201 correspondingly, information transmission between the chip U301 and the main control module is realized, X0, X1, Y0 and Y1 ports of the chip U301 are connected with the RS232 communication unit, signal transmission between the chip U301 and the RS232 communication unit is realized, X2 and Y2 ports of the chip U301 are connected with the RS485 communication unit, signal transmission between the chip U301 and the RS485 communication unit is realized, X3 and Y3 ports of the chip U301 are connected with the USB communication unit, and signal transmission between the chip U301 and the USB communication unit is realized.

6. The control system for assembling a car navigation product according to claim 5, wherein The RS232 communication unit comprises a chip U302, the chip U302 is a MAX3232ESE, the chip U302 is connected with 232 interfaces J301 and J302, and the interfaces J301 and J302 are used for PC or product communication.

7. The control system for assembling a car navigation product according to claim 6, wherein The RS485 communication unit comprises a chip U401, the model of the chip U401 is MAX485E, the No.2 and No.1 pins of the chip U401 are connected with a communication bus, the No.6 and No.7 pins of the chip U401 are connected with a 485 interface J401, and the 485 interface J401 is used for realizing product communication.

8. The control system for assembling a car navigation product according to claim 7, wherein The USB communication unit comprises a chip U501, the model of the chip U501 is CH340E, the No.8 and No.9 pins of the chip U501 are correspondingly connected with the No.2 and No.15 pins of the chip U301, the No.7 pin of the chip U501 is connected with a USB interface J501, the No.2 and No.3 pins of the USB interface J501 are correspondingly connected with the No.2 and No.3 pins of the chip U501, and the USB interface J501 is used for realizing PC communication.

9. The control system for assembling a car navigation product according to claim 5, wherein, The CAN communication unit comprises a chip U601, the model of the chip U601 is TJA1051F, the No.1 and No.4 pins of the chip U601 are correspondingly connected with the No.38 and No.37 pins of the core board connector M201, the No.6 and No.7 pins of the chip U601 are connected with a CAN interface, and the CAN interface is used for realizing product communication.

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