4G data transmission circuit and vehicle-mounted module
By integrating an MCU module, a 4G communication module, and a SIM module, and employing highly integrated circuitry and dynamic power management, the problem of insufficient integration and power consumption optimization in the communication module is solved, achieving compactness, low power consumption, and multi-network compatibility, making it suitable for diverse application scenarios.
Patent Information
- Application Number
- CN202422933123.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-11-29
AI Technical Summary
Existing communication modules are insufficient in terms of integration and power consumption optimization, and cannot meet the needs of some application scenarios.
Design a 4G data transmission circuit that integrates an MCU module, a 4G communication module, a SIM module, and a linear voltage regulator module. Employ highly integrated Air780E and N32L403KBQ7 integrated circuits, and combine the enable terminal and dynamic power management of the linear voltage regulator module to achieve on-demand power supply and intelligent sleep functions.
It achieves a highly integrated and low-power design, improves device compactness and reliability, dynamically manages power consumption, extends battery life, adapts to diverse application needs, and supports multi-network compatibility.
Smart Images
Figure CN223472354U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to wireless communication technical field, especially a kind of 4G data transmission circuit and vehicle-mounted module. BACKGROUND
[0002] With the rapid development of mobile communication technology, the demand of integrated, low-power and high-performance communication module is growing. The existing communication module has deficiencies in integration and power consumption optimization, which cannot meet the needs of some application scenarios. UTILITY MODEL CONTENT
[0003] The utility model aims at at least one of the technical problems existing in the prior art. To this end, the utility model provides a kind of 4G data transmission circuit and vehicle-mounted module, which can realize high integration and low-power design.
[0004] In one aspect, the utility model embodiment provides a kind of 4G data transmission circuit, comprising:
[0005] MCU module has first power terminal and first connection end;
[0006] 4G communication module has second power terminal, second connection end and third connection end, and the second connection end of the 4G communication module is connected with the first connection end of the MCU module;
[0007] SIM module has third power terminal and fourth connection end, and the fourth connection end of the SIM module is connected with the third connection end of the 4G communication module;
[0008] Linear voltage stabilizing module has enable end, power input end and power output end, and the enable end of the linear voltage stabilizing module is connected with enable interface, and the power input end of the linear voltage stabilizing module is used to connect upper power supply circuit, and the power output end of the linear voltage stabilizing module is connected to the first power terminal of the MCU module, the second power terminal of the 4G communication module and the third power terminal of the SIM module respectively.
[0009] According to some embodiments of the utility model, the 4G communication module is also connected with LED indicator light, and the LED indicator light is used to indicate the use state of the 4G communication module.
[0010] According to some embodiments of the utility model, the 4G communication module is also connected with antenna base.
[0011] According to some embodiments of the utility model, filter capacitor is connected between the 4G communication module and the antenna base.
[0012] According to some embodiments of the present application, the second connection end of the 4G communication module and the first connection end of the MCU module are connected with an impedance matching resistor.
[0013] According to some embodiments of the present application, the 4G communication module is provided with a USB signal connection end.
[0014] According to some embodiments of the present application, the 4G communication module adopts an integrated circuit with model Air780E.
[0015] According to some embodiments of the present application, the SIM module is provided with at least one of a socket type slot or a patch type slot.
[0016] According to some embodiments of the present application, the MCU module adopts an integrated circuit with model N32L403KBQ7.
[0017] On the other hand, the present application provides a vehicle-mounted module comprising the 4G data transmission circuit.
[0018] The present application has at least the following advantages:
[0019] By integrating the MCU module, the 4G communication module, the SIM module and the linear voltage stabilizing module, the hardware structure is optimized, the external module and the circuit layout space are reduced, so that the compactness of the device is realized, the linear voltage stabilizing module has an enable end, the on-demand power supply and the intelligent sleep function can be realized, the power consumption is effectively reduced, and the low power consumption requirement can be met.
[0020] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS
[0021] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
[0022] Figure 1 The figure is a principle block diagram of the 4G data transmission circuit of the present application;
[0023] Figure 2 The figure is a principle block diagram of the 4G data transmission circuit of the present application; Figure 1 The figure is a circuit principle diagram of the 4G communication module of the 4G data transmission circuit;
[0024] Figure 3 The figure is a circuit principle diagram of the 4G data transmission circuit of the present application; Figure 1 The figure is a circuit principle diagram of the MCU module of the 4G data transmission circuit;
[0025] Figure 4 The figure is a circuit principle diagram of the 4G data transmission circuit of the present application;Figure 1 The circuit schematic diagram of the SIM module of the 4G data transmission circuit is shown.
[0026] Figure 5 For Figure 1 The circuit schematic diagram of the linear voltage stabilizing module of the 4G data transmission circuit is shown. DETAILED DESCRIPTION
[0027] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as limiting the present application.
[0028] In the description of the present application, the meaning of "several" is one or more, the meaning of "multiple" is two or more, greater than, less than, more than, etc. are understood as not including the number, "above", "below", "within", etc. are understood as including the number. If there is a description of "first", "second", etc. is only used for distinguishing technical features for the purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.
[0029] In the description of the present application, unless otherwise explicitly limited, the words "have", "set", "connect" and the like should be broadly understood, and the skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.
[0030] The present embodiment discloses a kind of vehicle-mounted module including 4G data transmission circuit. Please refer to Figure 1 , 4G data transmission circuit includes MCU module 100, 4G communication module 200, SIM module 300 and linear voltage stabilizing module 400, MCU module 100 has first power end and first connection end, 4G communication module 200 has second power end, second connection end and third connection end, the second connection end of 4G communication module 200 is connected with the first connection end of MCU module 100, SIM module 300 has third power end and fourth connection end, the fourth connection end of SIM module 300 is connected with the third connection end of 4G communication module 200, linear voltage stabilizing module 400 has enable end, power input end and power output end, the enable interface is connected to the enable end of linear voltage stabilizing module 400, the power input end of linear voltage stabilizing module 400 is used to connect upper power supply circuit, the power output end of linear voltage stabilizing module 400 is connected to the first power end of MCU module 100, the second power end of 4G communication module 200 and the third power end of SIM module 300 respectively.
[0031] By integrating the MCU module 100, the 4G communication module 200, the SIM module 300 and the linear voltage stabilizing module 400, the hardware structure is optimized, the external module and the circuit layout space are reduced, the compactness of the device is realized, the linear voltage stabilizing module 400 has an enable end, the on-demand power supply and the intelligent sleep function can be realized, the power consumption is effectively reduced, and the low-power consumption requirement can be met.
[0032] Please refer to Figure 2 The 4G communication module 200 adopts an integrated circuit with the model Air780E. The integrated circuit with the model Air780E supports multiple frequency bands and multiple communication protocols, can be seamlessly accessed in different network environments, and is beneficial to improve the reliability of network connection. Moreover, the integrated circuit with the model Air780E has high integration degree and less peripheral circuit, which is beneficial to improve the integration degree of the circuit.
[0033] Please refer to Figure 2 The 4G communication module 200 is also connected with LED indicator lights, as shown in the figure marked NET_STA1 and NET_STA2. The LED indicator lights are used to indicate the use state of the 4G communication module 200, such as whether it is connected to the network, the signal strength, etc. The 4G communication module 200 is also connected with an antenna base (as shown in the figure marked RF1). The antenna base is used to connect the external antenna. The 4G communication module 200 and the antenna base are connected with filter capacitors, as shown in the figure marked C88. The filter capacitors are used for filtering processing to reduce noise. The second connection end of the 4G communication module 200 and the first connection end of the MCU module 100 are connected with impedance matching resistors, as shown in the figure marked R58 and R59. The impedance matching resistors are used for impedance matching and preventing signal reflection to ensure the integrity of the signal. The 4G communication module 200 is provided with a USB signal connection end. The 61st pin, the 60th pin and the 59th pin of the 4G communication module 200 in the figure are reserved for the data transmission of USB. Figure 3
[0034] Please refer to Figure 3 The MCU module 100 uses an integrated circuit with model number N32L403KBQ7. The first pin of the MCU module 100 is used as a first power supply end and is connected to the power supply output end (3.3V power supply) of the linear voltage stabilizing module 400. The second pin and the third pin are connected to an external crystal oscillator module, which is used to provide a stable clock signal. The fourth pin and the fifth pin are both connected to the power supply output end of the linear voltage stabilizing module 400. The fourth pin is connected to a pull-up resistor, which is used for power-on reset. The thirty-second pin is connected to a reference voltage end (ground end), and the thirty-first pin is connected to a pull-down resistor, as indicated by the label R56 in the figure, which is used to realize a normal start mode. The twenty-third pin and the twenty-fourth pin are used as a debugging interface for serial line debugging of the MCU module 100. The twenty-seventh pin and the twenty-eighth pin are reserved as UART interfaces, and the twenty-seventh pin and the twenty-eighth pin are both connected to impedance matching resistors, as indicated by the labels R66 and R67, which are used for impedance matching and signal reflection prevention to ensure signal integrity.
[0035] Please refer to Figure 4 The SIM card slot is a slot module connected to an external SIM card, which is used to insert a SIM card and provide necessary signals and power. The SIM module 300 is provided with at least one of a socket type slot (as indicated by the label CARD1 in the figure) or a patch type slot (as indicated by the label SIM1 in the figure), which can be freely selected by the user according to actual conditions. A diode array is used in the SIM module 300, and the first port, the third port, the fifth port, and the fourth port of the SIM module 300 are respectively connected to the pin SIM_RST, the pin SIM_DATA, the pin SIM_V, and the pin SIM_CLK of the SIM card slot. The pin SIM_RST and the pin SIM_V are connected to capacitors (as indicated by the labels C82, C83, and C84 in the figure), which are used for decoupling to ensure signal stability and reduce the influence of power supply noise on SIM card communication. Unstable high-frequency noise in the power supply is filtered out to prevent interference signals.
[0036] Please refer to Figure 5The enable end (marked as EN in the figure) of the linear voltage stabilizing module 400 is used to control the start and stop of the linear voltage stabilizing module 400, which can be switched or intelligently hibernated according to application scenarios. The power input end of the linear voltage stabilizing module 400 is connected with a resistor (marked as R55 in the figure) for current limiting and voltage regulation, to stabilize the voltage input. The power input end of the linear voltage stabilizing module 400 is also connected with a filter capacitor (marked as C77 in the figure) for stabilizing the input voltage and filtering high-frequency noise, to provide a more stable input signal. The power output end of the linear voltage stabilizing module 400 is connected with capacitors (marked as C78 and C90) for smoothing the output voltage, reducing the fluctuation of the output voltage, improving the stability of the linear voltage stabilizing module 400, and improving the load response, removing noise in the power supply, and ensuring the stability of the output.
[0037] In summary, the embodiment has the following beneficial effects:
[0038] 1) Highly integrated design, improving the compactness and reliability of the equipment
[0039] By integrating the 4G communication module 200, the MCU module 100, the linear voltage stabilizing module 400, the SIM module 300, and various communication interfaces onto a single circuit board, the use of external modules is reduced, the PCB design and spatial layout are optimized, the number of hardware connection points is greatly reduced, the soldering complexity is reduced, thereby improving the overall structural stability and reliability of the circuit board. The PCB area is reduced, which is suitable for small-sized terminal equipment (such as smart bracelets and portable positioning terminals) with high space requirements. Reducing the redundant design of external modules reduces hardware costs, while avoiding signal interference caused by incompatibility between modules.
[0040] 2) Dynamic power management, achieving a balance between low power consumption and high performance
[0041] The linear voltage stabilizing module 400 and the dynamic power management strategy are adopted, the standby mode and the running mode of the linear voltage stabilizing module 400 are combined, and the power supply current and voltage of the linear voltage stabilizing module 400 are adjusted in real time. In the standby state, the power consumption of the circuit board can be reduced to the lowest level, which is suitable for long-time low-frequency use scenarios. In the high-load data transmission scenario, it can quickly switch to the high-performance mode to ensure the communication stability and data integrity. The battery life of the equipment is prolonged, which is particularly suitable for Internet of Things terminal equipment and long-period outdoor application scenarios (such as outdoor communication equipment).
[0042] 3) Flexible interface design, enhancing system expansion capability and compatibility
[0043] The circuit board design provides various interfaces (such as UART, USB), and the debugging interface is reasonably laid out, so that the user can conveniently connect external sensors, controllers and storage devices, while supporting firmware upgrade and real-time debugging. Adapt to diversified application requirements such as industrial Internet of Things, smart agriculture, smart city, etc., improve the applicability of the circuit board, reduce the time and cost invested by the user due to secondary development, and accelerate the project implementation cycle.
[0044] 4) Multi-network compatibility, adapting to internationalization and multi-scenario application requirements
[0045] The integrated circuit of model Air780E is adopted as the 4G communication module 200, supports 4G communication protocol, various network standards (such as FDD-LTE, TDD-LTE) and multi-band network connection, can adapt to network environments in different countries or regions. The device can seamlessly access operator networks worldwide, supports cross-regional application requirements (such as cross-border logistics tracking, international positioning terminal). Supports various communication methods (such as data transmission, voice call, SMS service), meets the full-featured communication requirements of smart devices. Strong compatibility, suitable for diversified industry scenarios (such as Internet of Vehicles, smart medical care, smart home).
[0046] The above describes the embodiments of the utility model in detail in combination with the drawings, but the utility model is not limited to the above embodiments, and various changes can be made within the knowledge range possessed by those skilled in the art without departing from the purpose of the utility model.
Claims
1. A 4G data transmission circuit, characterized by, The 4G data transmission circuit comprises: an MCU module having a first power supply end and a first connecting end; a 4G communication module having a second power supply end, a second connecting end and a third connecting end, the second connecting end of the 4G communication module being connected with the first connecting end of the MCU module; a SIM module having a third power supply end and a fourth connecting end, the fourth connecting end of the SIM module being connected with the third connecting end of the 4G communication module; a linear voltage stabilizing module having an enabling end, a power input end and a power output end, the enabling end of the linear voltage stabilizing module being connected with an enabling interface, the power input end of the linear voltage stabilizing module being used for connecting a superior power supply circuit, and the power output end of the linear voltage stabilizing module being connected with the first power supply end of the MCU module, the second power supply end of the 4G communication module and the third power supply end of the SIM module respectively.
2. The 4G data transmission circuit of claim 1, wherein, The 4G communication module is further connected with an LED indicating lamp, which is used for indicating the use state of the 4G communication module.
3. The 4G data transmission circuit of claim 1, wherein, The 4G communication module is further connected with an antenna base.
4. The 4G data transmission circuit of claim 3, wherein, A filter capacitor is connected between the 4G communication module and the antenna base.
5. The 4G data transmission circuit of claim 1, wherein, An impedance matching resistor is connected between the second connecting end of the 4G communication module and the first connecting end of the MCU module.
6. The 4G data transmission circuit of claim 1, wherein, The 4G communication module is provided with a USB signal connecting end.
7. The 4G data transmission circuit according to any one of claims 1 to 6, characterized in that, The 4G communication module adopts an integrated circuit with a model of Air780E.
8. The 4G data transmission circuit of claim 1, wherein, The SIM module is provided with at least one of a socket type slot or a patch type slot.
9. The 4G data transmission circuit of claim 1, wherein, The MCU module adopts an integrated circuit with a model of N32L403KBQ7.
10. An in-vehicle module, characterized by, The 4G data transmission circuit comprises the 4G data transmission circuit according to any one of claims 1 to 9.