Development board for wearable device and smart watch

Abstract

The utility model relates to the technical field of development boards, in particular to a development board for wearable equipment, which comprises a master control module, an expansion module, a display module and a power supply module, and the expansion module, the display module and the power supply module are respectively and electrically connected with the master control module. The expansion module is provided with a debugging interface and exchanges data with the main control module through a USB data signal; the display module is provided with a wiring terminal and a display screen, and the main control module controls screen display of the AMOLED display screen through a QSPI display data signal; the power module is provided with a battery interface. The development board is connected to the AMOLED display screen through the QSPI interface, so that the screen display effect with higher contrast, wider viewing angle and higher response speed is realized, and the use experience of a user in development or screen interaction is improved. The utility model also provides an intelligent watch. The intelligent watch comprises the development board used for the wearable device.

Description

TECHNICAL FIELD

[0001] The utility model relates to the development board technical field especially relates to a development board for wearable equipment and intelligent watch. BACKGROUND

[0002] The development board is a kind of circuit board for carrying out embedded system development, provides basic integrated development environment for developer, and is convenient for developer to customize the function implementation of development board according to own demand.With the development of science and technology and the gradual introduction of health monitoring equipment, the function and use scene that user expects development board to realize gradually increase, and currently wearable development board applicable to wearable equipment has appeared.

[0003] Based on the small screen display use scene of wearable equipment, the existing wearable development board mostly adopts SPI interface liquid crystal screen, there is the problem that the display resolution of screen and refresh speed are low, screen display effect is general, which has affected the use experience and development debugging effect when user wears. UTILITY MODEL CONTENT

[0004] To solve the problem that the existing wearable development board mostly adopts SPI interface display screen, screen display effect is poor, difficult to meet the smooth reality demand, the utility model provides a development board for wearable equipment and intelligent watch.

[0005] The utility model solves technical matter's scheme and provides a development board for wearable equipment, the development board for wearable equipment includes host computer module;Extension module, the extension module is electrically connected with the host computer module;The extension module is provided with debugging interface, the debugging interface can be pluggable connection with external data line, and the host computer module and external data line are exchanged with USB data signal;Display module, the display module is electrically connected with the host computer module;The display module is provided with terminal and the display screen connected on the terminal, and the display screen is QSPI interface AMOLED display screen, and the host computer module controls the screen display of the display screen by QSPI display data signal;Power module, the battery interface is set up on the power module, and the power module is electrically connected with the host computer module.

[0006] Preferably, the display module is further provided with a touch component;The touch component detects external touch operation, corresponding conversion generates touch electric signal, and sends touch feedback signal to the host computer module through I2C communication protocol.

[0007] Preferably, the extension module is provided with a storage component, the storage component accesses memory card, and the host computer module stores storage signal into the memory card.

[0008] Preferably, the expansion module is further provided with at least one sensor pad, the sensor pad is circumscribed to an external sensor, and exchanges expansion data signals with the master module.

[0009] Preferably, the sensor pad comprises at least one I2C pad and at least one UART pad, and the expansion data signals are I2C expansion signals or UART expansion signals.

[0010] Preferably, the power module is further provided with a power detection component, the power detection component detects the remaining power of the external power supply circumscribed to the battery interface, and sends a power voltage detection signal to the master module.

[0011] Preferably, the development board for wearable devices is provided with a motion module, the motion module is electrically connected with the master module; the motion module comprises an inertial measurement component, the inertial measurement component detects the motion state of the development board for wearable devices, and sends the motion state to the master module.

[0012] Preferably, the motion module is further provided with a clock component, the clock component sends a clock synchronization signal to the master module; the clock component is electrically connected with the power module, and when the clock component is powered off, the power module supplies power.

[0013] Preferably, the development board for wearable devices is provided with an audio module, the audio module is provided with at least one microphone and at least one speaker pad; the audio module is electrically connected with the master module, and the master module controls the audio module through an I2C communication signal; the microphone receives external sound sampling information, and sends the sound sampling information to the master module.

[0014] The utility model further provides a kind of smart watch, including the development board for wearable devices as described above, watch case and watchband, the development board for wearable devices is set in the watch case, and the display screen at least part exposes in the watch case;The watch case is installed on the watchband.

[0015] Compared with prior art, the development board for wearable devices and the smart watch have the following advantages:

[0016] 1. The development board for wearable device comprises a main control module, an expansion module, a display module and a power module, the expansion module, the display module and the power module are electrically connected with the main control module respectively; the expansion module is provided with a debugging interface, and data exchange is carried out between the expansion module and the main control module through a USB data signal; the display module is provided with a wiring terminal and a display screen, the display screen is an AMOLED display screen with a QSPI interface, and the main control module controls the screen display of the display screen through a QSPI display data signal; and the power module is provided with a battery interface. On the one hand, the development board is connected with the AMOLED display screen through the QSPI interface, so that the screen display effect with higher contrast, wider viewing angle and faster response speed is realized, and the use experience of the user in development or screen interaction is improved; on the other hand, the power management capability of the power module enables the development board for wearable device to realize independent operation, and meanwhile, the energy consumption of the display module and other high-power-consumption modules is greatly reduced, and the endurance capability of the development board for wearable device is improved.

[0017] 2. The display module of the utility model is further provided with a touch component; the touch component detects external touch operation, correspondingly converts to generate a touch electric signal, and sends a touch feedback signal to the main control module through an I2C communication protocol. Through the setting of the touch component, the user can directly touch the display screen for interaction, so that the operation experience is more intuitive and convenient for subsequent debugging.

[0018] 3. The expansion module of the utility model is provided with a storage component connected with a memory card, and the main control module stores a storage signal in the memory card, so that the amount of data that can be saved in the debugging process is increased, and then more debugging functions and application scenarios can be expanded.

[0019] 4. The expansion module of the utility model is provided with at least one sensor pad, the sensor pad is connected with an external sensor and exchanges an expansion data signal with the main control module. The setting of the at least one sensor pad increases the number of interfaces of the sensors that can be connected on the development board, so that the development board can be debugged in more types, and the functions and application scenarios that can be realized by the development board for wearable device are greatly expanded.

[0020] 5. The power module of the utility model is further provided with a power detection component, the power detection component detects the remaining power of the external power supply at the battery interface, and sends a power voltage detection signal to the main control module. Through the detection of the state of the external power supply by the power detection component, the development board can obtain the remaining power of the battery in real time, so that the development board for wearable device is prevented from being unexpectedly powered off and stopped due to the depletion of the power of the external power supply when the external power supply is used for power supply.

[0021] 6. The development board for wearable devices of this utility model is equipped with a motion module including an inertial measurement unit (IMU). The IMU detects the motion state of the development board and sends the motion state to the main control module. By detecting the motion state of the development board through the motion module, the current motion state of the user wearing the development board can be further determined. This allows the user to expand the functions that the development board can implement based on the motion state, thereby improving the practicality of the development board for wearable devices in wearable usage scenarios.

[0022] 7. The motion module of this utility model is also equipped with a clock component that sends a clock synchronization signal to the main control module; when the clock component is powered off, the power supply module electrically connected to the clock component supplies power to it. The clock component meets the development board's requirement for accurate timing, which is beneficial for the development board to develop corresponding functions based on time information, and increases the practicality of the development board in wearable application scenarios.

[0023] 8. The development board for wearable devices of this utility model is equipped with an audio module, which has at least one microphone and at least one speaker pad. The audio module is electrically connected to the main control module, and the main control module controls the audio module via I2C communication signals. The audio module sends the external sound sampling information received by the microphone to the main control module. Through the audio module, the development board achieves audio acquisition, processing, and playback functions without the need for external modules, increasing the interactive methods between the user and the development board for wearable devices.

[0024] 9. This utility model also provides a smart watch, including a development board for wearable devices, a watch case, and a watch strap. The development board for wearable devices is fitted inside the watch case, and the display screen is at least partially exposed outside the watch case. The watch case is mounted on the watch strap. It has the same beneficial effects as the development board for wearable devices described above, and will not be described in detail here. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a circuit structure block diagram of a development board for wearable devices provided in the first embodiment of this utility model.

[0027] Figure 2 This is a circuit diagram of the main control module of the development board for wearable devices provided in the first embodiment of this utility model.

[0028] Figure 3 is the circuit structure diagram of the extension module of the development board for wearable equipment provided by the first embodiment of the utility model.

[0029] Figure 4 is the circuit structure diagram of the wiring terminal of the development board for wearable equipment provided by the first embodiment of the utility model.

[0030] Figure 5 is the circuit structure diagram of the power module of the development board for wearable equipment provided by the first embodiment of the utility model.

[0031] Figure 6 is the circuit structure diagram of the motion module of the development board for wearable equipment provided by the first embodiment of the utility model.

[0032] Figure 7 is the circuit structure of the audio module of the development board for wearable equipment provided by the first embodiment of the utility model Figure 1 .

[0033] Figure 8 is the circuit structure of the audio module of the development board for wearable equipment provided by the first embodiment of the utility model Figure 2 .

[0034] Figure 9 is the block diagram of the smart watch provided by the second embodiment of the utility model.

[0035] The drawing mark explanation is as follows:

[0036] 1, the development board for wearable equipment;2, the main control module;3, the extension module;4, the display module;5, the power module;6, the motion module;7, the audio module;8, the smart watch;

[0037] 31, the debugging interface;32, the storage component;33, the sensor pad;41, the wiring terminal;42, the display screen;43, the touch component;51, the battery interface;52, the power detection component;61, the inertial measurement component;62, the clock component;71, the microphone;72, the speaker pad;81, the watch case;82, the watchband. Specific implementation

[0038] In order to make the utility model's purpose, technical scheme and advantage more clearly, the following is combined with the drawing and the implementation example, and the utility model is further detailedly explained.It should be understood that the specific embodiment described here is only used to explain the utility model, and is not used to limit the utility model.

[0039] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. As used herein the terms "vertical", "horizontal", "left", "right", and the like are merely used for the purpose of illustration and are not intended to be limiting.

[0040] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "transverse", "longitudinal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0041] In addition, in addition to being used to indicate the orientation or positional relationship, the above-mentioned terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0042] In addition, the terms "mounting", "setting", "provided with", "connection", "connected" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally constructed; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0043] Please refer to Figures 1-5 The first embodiment of the present application provides a development board 1 for wearable device, including a main control module 2; an extension module 3, the extension module 3 is electrically connected with the main control module 2; the extension module 3 is provided with a debugging interface 31, the debugging interface 31 can be pluggably connected with external data line, the main control module 2 and the external data line are exchanged through USB data signal; a display module 4, the display module 4 is electrically connected with the main control module 2; the display module 4 is provided with a wiring terminal 41 and a display screen 42 connected to the wiring terminal 41, the display screen 42 is a QSPI interface AMOLED display screen, the main control module 2 controls the screen display of the display screen 42 through QSPI display data signal; a power module 5, the power module 5 is provided with a battery interface 51, and the power module 5 is electrically connected with the main control module 2.

[0044] SPI (Serial Peripheral Interface, serial peripheral interface) is a synchronous serial communication protocol, which is used to realize the serial communication between the single-chip microcomputer and the connected external device, and usually uses a single data line for data exchange; QSPI (Quad Serial Peripheral Interface, quad serial peripheral interface) expands the original single data line to four data lines based on SPI, and expands the transmission bandwidth by four times under the same clock, thereby greatly improving the data transmission efficiency.

[0045] Understandably, the wiring terminal 41 includes a QSPI terminal, and when the host module 2 controls the screen display of the display screen 42 through the QSPI display data signal, the frame rate and resolution of the display screen 42 are increased, and the real-time response speed is higher, which is beneficial to realize the high fluency display of high frame rate animation and improve the user's visual experience.

[0046] AMOLED (Active-matrix organic light-emitting diode, active-matrix organic light-emitting diode) is a display screen technology, and each pixel point in the AMOLED display screen corresponds to an organic light-emitting diode, and the corresponding pixel point is displayed in pure black when the diode is turned off.

[0047] Understandably, on the one hand, the setting of the display screen 42 as an AMOLED display screen can realize higher contrast and improve the display quality; on the other hand, due to the self-luminous characteristic of the AMOLED display screen, it is not necessary to set a liquid crystal layer to control the on-off of the backlight, so that the refractive index does not decrease when the light is obliquely viewed, which is beneficial to the user to still see the picture in the display screen 42 when viewing it from a large angle.

[0048] Understandably, the AMOLED display screen also has the characteristics of low power consumption, which is beneficial to reduce the power consumption of the display module 4 during operation and improve the heating condition at the display screen 42.

[0049] Specifically, in the embodiment, the display screen 42 is an AMOLED display screen with a resolution of 410*502, 16.7M color display, and a viewing angle of 0°-178°; the display screen 42 is integrated with a driving chip CO5300, and the host module 2 controls the screen display of the display screen 42 through the driving chip CO5300.

[0050] Understandably, the user connects the external data line to the debugging interface 31 to realize the connection with the expansion module 3, thereby indirectly realizing the intercommunication between the external data line and the host module 2, and facilitating the user to burn the program for debugging and power the development board 1 for the wearable device.

[0051] It can be understood that the debugging interface 31 can be any one of a Type-A interface, a Type-B interface or a Type-C interface; more specifically, in the embodiment, the debugging interface 31 is a Type-C interface.

[0052] I2C (Inter-Integrated Circuit, Inter-Integrated Circuit) is a communication protocol with synchronous and serial characteristics, which prevents the slave from actively outputting information, and only the slave with address matching is released from the mute state, thereby realizing the function of controlling multiple slaves using one master; the I2C interface is a communication interface using the protocol.

[0053] It can be understood that, in order to facilitate the control of the plurality of slave modules by the master module 2, the master module 2 is provided with an I2C interface and is connected to other modules through the I2C interface.

[0054] Specifically, in the embodiment, the master module 2 uses an ESP32-S3R8 microcontroller as a master processor; more specifically, the master module 2 is further provided with a Wi-Fi component and a Bluetooth communication component; the Wi-Fi component performs data transmission through a 2.4GHz wireless signal, and the Bluetooth communication component is a low-power Bluetooth component using Bluetooth 5 specifications.

[0055] It can be understood that the master module 2 controls the start and stop of the power module 5 through a power enable signal; when no external data line is connected to the expansion module 3 for power supply, the power module 5 can call an external power supply to supply power to the remaining modules by connecting the power supply inside and outside the battery interface 51, thereby realizing the independent running capability of the development board 1 for wearable devices, and greatly improving the running stability.

[0056] It can be understood that the power module 5 is also electrically connected with the display module 4, which is conducive to maintaining the display of the screen of the display module 4 when the expansion module 3 is not connected to the external data line for power supply.

[0057] Specifically, in the embodiment, the power module 5 uses an AXP2101 charging and power supply chip, which realizes fine power management and greatly improves the power saving capability of the power module 5 and the endurance of the external power supply, thereby reducing the frequency of replacing the external power supply by the user and improving the practicability and ease of use of the power module 5.

[0058] It can be understood that the power management capability of the power module 5 in combination with the low-power characteristic of the AMOLED display screen greatly improves the power saving capability of the display module 4 and enhances the endurance thereof while ensuring the display effect of the display screen 42.

[0059] It can be understood that the power module 5 is also provided with at least one voltage output channel, which is beneficial to divide one input power into multiple independently adjustable voltage outputs, so as to facilitate the main control module 2 to dynamically control the voltage values of the multiple voltage outputs, realize the programmable control of power-on and power-off, and improve the easy debugging of the development board 1 for wearable devices; in addition, the setting of the multiple voltage output channels is also beneficial to timely isolation when a single voltage output fails, and will not affect the remaining power supply paths, thereby improving the working stability and safety of the power module 5.

[0060] It can be understood that the power module 5 is optionally configured with a battery charging function, and the power module 5 is built-in with a battery overcharge / overdischarge protection, which further reduces the frequency of replacing the battery by the user and improves the convenience of debugging; more specifically, in the embodiment, the battery interface 51 selects a lithium battery interface, and the power module 5 is optionally configured with a lithium battery charging function.

[0061] Further, the display module 4 is also provided with a touch component 43; the touch component 43 detects external touch operations, converts to generate touch electrical signals, and sends touch feedback signals to the main control module 2 through the I2C communication protocol.

[0062] It can be understood that the touch component 43 cooperates with the high refresh rate display screen 42 to greatly improve the upper limit of the response speed of the display module 4 in response to touch operations; in the embodiment, the response speed of the display module 4 is less than 1ms.

[0063] Specifically, in the embodiment, the touch component 43 adopts FT3168 chip and is integrated in the display screen 42; the touch component 43 is optionally designed with single-point capacitance or multi-point capacitance touch.

[0064] It can be understood that the setting of the touch component 43 enables the display screen 42 to receive touch operations of the user on the surface of the display screen 42 and send touch feedback signals, and the main control module 2 makes a response to call other modules after receiving the touch feedback signals and sends new display data signals to the display module 4, thereby realizing the direct interaction of the user with the development board 1 for wearable devices, and making the operation experience more intuitive; at the same time, the touch interaction and feedback of the display module 4 are also beneficial to the user to operate each function of the development board 1 for wearable devices through the display screen 42, and facilitate the user to debug after burning each program.

[0065] Please further refer to Figure 2 and Figure 4In the embodiment, the wiring terminal 41 includes a QSPI terminal for controlling the display of the display screen 42. Through the wiring terminal 41, the GPIO4-GPIO7 pins of the master control module 2 are connected to the QSPI_SIO0, QSPI_SI1-QSPI_SI3 terminals of the display screen 42 respectively, and the display data signal of the QSPI is sent to the display screen 42 through the above-mentioned pin connection to control the screen display of the display screen 42; the pin GPIO11 of the master control module 2 is connected to the clock pin QSPI_SCL of the display screen 42, the pin GPIO12 is connected to the chip selection pin LCD_CS, the pin GPIO8 is connected to the reset pin LCD_RESET, and the pin GPIO13 is connected to the anti-tear pin LCD_TE.

[0066] The wiring terminal 41 also includes a TP (Touch Panel, i.e. touch screen) terminal connected to the touch component 43, and the function of the TP terminal is to transmit a small touch capacitance signal. Through the wiring terminal 41, the TP_SDA pin and the TP_SCL pin of the FT3168 chip are connected to the GPIO15 pin and the GPIO14 pin of the master control module 2 respectively, and the touch feedback signal is sent to the master control module 2 through the I2C interface.

[0067] Further, the expansion module 3 is provided with a storage component 32, and the storage component 32 accesses a storage card, and the master control module 2 stores storage signals into the storage card.

[0068] Specifically, in the embodiment, the storage card accessed by the storage component 32 is a Micro SD card with a maximum storage capacity of 64GB.

[0069] Generally, the interface of the SD card can support two operating modes of SD card mode and SPI mode; it can be understood that the storage signal sent by the master control module 2 to the storage card is an SPI storage signal or an SDMMC storage signal. The SDMMC storage signal is a signal that can perform data operation on an SD card (Secure Digital, SD card, i.e. secure digital card) or an MMC card (Multimedia, MMC card, i.e. multimedia card).

[0070] It can be understood that the design of the storage component 32 increases the external storage card interface, which is convenient for users to expand data storage, increases the functions that can be realized by the development board 1 for wearable devices, and improves the data capacity that can be stored by the user during single debugging, thereby improving the ease of debugging of the development board 1 for wearable devices.

[0071] Further, the expansion module 3 is also provided with at least one sensor pad 33, the sensor pad 33 is externally connected to an external sensor, and exchanges expansion data signals between the master control module 2.

[0072] I2C and UART are two common communication protocols. Among them, I2C is a synchronous communication protocol, which synchronizes data transmission through control of the clock signal; UART is an asynchronous communication protocol, which synchronizes data transmission through a preset bit rate.

[0073] More specifically, in the present embodiment, the sensor pads 33 respectively communicate data with the master module 2 through the I2C extended data signal and the UART extended data signal according to the different types of pads.

[0074] It can be understood that the expansion module 3 is provided with a plurality of extensible interfaces, which greatly optimizes the problem that the limited interface of the traditional development board can only support basic debugging, and widens the achievable functions and application scenarios of the development board 1 for wearable devices.

[0075] Further, the sensor pads 33 include at least one I2C pad and at least one UART pad, and the extended data signal is an I2C extended signal or a UART extended signal.

[0076] Specifically, in the present embodiment, the expansion module 3 is provided with two sensor pads 33 in total, and the two sensor pads 33 are respectively an I2C pad and a UART pad, which is conducive to the user to access diversified sensors and ensure the compatibility with the master module 2.

[0077] It can be understood that the master module 2 outputs three types of data signals: UART, I2C and QSPI control signals for controlling external devices, 2.4GHz wireless signals for Wi-Fi wireless data transmission, and interrupt signals in response to touch and external sensor triggering.

[0078] Please further refer to Figure 2 and Figure 3 In the expansion module 3 of the present embodiment, the USB_N pin and the USB_P pin of the debugging interface 31 are respectively connected with the GPIO19 pin and the GPIO20 pin of the master module 2, and the two pins transmit USB data signals to each other to realize data intercommunication.

[0079] The master module 2 selects a memory card and sends SPI storage signals or SDMMC storage signals to the memory card through the MOSI pin, the SCK pin and the SDCS pin of the storage component 32 connected with the GPIO1 pin, the GPIO2 pin and the GPIO17 pin respectively, so as to realize the effect of writing data into the memory card, and reads the information in the memory card through the MISO pin connected with the GPIO3 pin.

[0080] The I2C pads in the sensor pads 33 lead out the ESP32_SCL pin and the ESP32_SDA pin, which are connected to the GPIO14 pin and the GPIO15 pin of the master module 2 respectively, and exchange information between channels through I2C extension signals; the UART pads lead out the U0TXD pin and the U0RXD pin, which are connected to the GPIO43 pin and the GPIO44 pin of the master module 2 respectively, and exchange information between channels through UART extension signals.

[0081] Further, the power module 5 is also provided with a power detection component 52, which detects the remaining power of the external power supply at the battery interface 51 and sends a power voltage detection signal to the master module 2.

[0082] It can be understood that the power voltage detection signal is the remaining power of the external power supply detected by the power detection component 52 in real time, which facilitates the master module 2 to calculate the remaining working time of the power module 5 in time, avoids the situation that the development board 1 for wearable devices is powered off and stopped unexpectedly due to the depletion of the external power supply when the power module 5 is powered by the external power supply, and the debugging data is lost without being saved, and greatly improves the security of the debugging data.

[0083] Please further refer to Figure 2 and Figure 5 In the embodiment, the ESP32_SDA pin and the ESP32_SCL pin of the power module 5 are connected to the GPIO15 pin and the GPIO14 pin of the master module 2 respectively, the master module 2 sends a power enable signal to control the start and stop of the power module 5 through the above channel, and the power module 5 sends a power voltage detection signal to the master module 2 to inform the master module 2 of the remaining power of the external power supply. Figure 5 The battery interface 51 in

[0084] Please refer to Figure 1 , Figure 2 and Figure 6 Further, the development board 1 for wearable devices is provided with a motion module 6, which is electrically connected to the master module 2; the motion module 6 includes an inertial measurement component 61, which detects the motion state of the development board 1 for wearable devices and sends the motion state to the master module 2.

[0085] Specifically, in the embodiment, the motion state sent by the inertial measurement component 61 is an I2C data signal.

[0086] It can be understood that the inertial measurement assembly 61 has acceleration detection function and gyroscope detection function, can calculate the current motion state of the user (such as step calculation or posture recognition, etc.) by detecting the real-time state of the motion module 6, and provides real-time motion data for the main control module 2, which is beneficial to the development and debugging of the user for the wearable device development board 1 motion related function.

[0087] More specifically, in the present embodiment, the inertial measurement assembly 61 is integrated with a six-axis sensor of three-axis acceleration detection and three-axis gyroscope detection, which greatly improves the detection accuracy of the motion state.

[0088] Further, the motion module 6 is also provided with a clock assembly 62, which sends a clock synchronization signal to the main control module 2; the clock assembly 62 is electrically connected with the power module 5, and when the clock assembly 62 is powered off, the power module 5 supplies power.

[0089] It can be understood that the clock assembly 62 provides accurate timing function, on the one hand, greatly reduces the time error of motion state statistics, improves the reliability and accuracy of the motion state; on the other hand, it is convenient for the user to develop and design related functions based on time information, improve the functions that the wearable device development board 1 can realize, and comprehensively improve the practicability in wearable use scene.

[0090] More specifically, the timing unit of the clock assembly 62 is year / month / day / hour / minute / second, i.e. accurate to second level.

[0091] Since the timing accuracy of the clock assembly 62 needs to be continuously powered to maintain the timing state, the timing accuracy will be greatly reduced in the case of restarting after the clock assembly 62 is accidentally powered off; it can be understood that the electrical connection between the power module 5 and the clock assembly 62 is beneficial to the power supply of the power module 5 after the main control module 2 is powered off, so as to keep the clock assembly 62 working continuously, thereby ensuring the accuracy of the time information.

[0092] Please further refer to Figure 2 and Figure 6 In the present embodiment, the inertial measurement assembly 61 uses a six-axis inertial measurement unit of QMI8658, the ESP32_SCL pin and the ESP32_SDA pin of the inertial measurement assembly 61 are connected with the GPIO14 pin and the GPIO15 pin of the main control module 2 respectively, and the motion state is sent to the main control module 2 through the above connection; the GPIO21 pin of the main control module 2 is also connected with the QMI_INT1 pin of the inertial measurement assembly 61, and the interrupt of the inertial measurement assembly 61 is controlled through the above connection.

[0093] The clock component 62 uses a high-precision real-time clock chip PCF85063, the RTC_SCL pin and the RTC_SDA pin of the clock component 62 are connected to the GPIO14 pin and the GPIO15 pin of the master module 2 respectively, and the clock synchronization signal is sent to the master module 2 through the above connection; the GPIO39 pin of the master module 2 is also connected to the RTC_INT pin of the clock component 62, and the interrupt of the clock component 62 is controlled through the above connection.

[0094] Please refer to Figure 1 、 Figure 2 、 Figure 7 and Figure 8 , further, the development board 1 for wearable devices is provided with an audio module 7, at least one microphone 71 and at least one speaker pad 72 are arranged on the audio module 7; the audio module 7 is electrically connected with the master module 2, and the master module 2 controls the audio module 7 through I2C communication signal; the microphone 71 receives external sound sampling information and sends the sound sampling information to the master module 2.

[0095] It can be understood that the sound sampling information is an I2S audio signal. I2S (Inter-IC Sound) is an interface standard applied to digital audio transmission, which is used for transmitting audio data between integrated circuits.

[0096] More specifically, in the embodiment, the master module 2 is configured to use the I2S interface in full-duplex mode, and the I2S format and sampling rate configuration of the audio codec chip and the audio ADC acquisition chip used in the audio module 7 are completely consistent, and no conflict occurs between I2C addresses, thereby realizing the bidirectional transmission communication of the I2S audio signal between the master module 2 and the audio module 7.

[0097] It can be understood that the audio module 7 integrally realizes the functions of audio acquisition, processing and playing, which is conducive to the master module 2 to realize the key functions of wearable devices such as audio codec without external modules, and increases the implementable functions and application scenarios of the development board 1 for wearable devices.

[0098] Specifically, in the embodiment, two microphones 71 and one speaker pad 72 are arranged on the audio module 7.

[0099] It can be understood that in the case of arranging a single microphone 71, if the user's speaking volume is small, the signal-to-noise ratio of the sound received by the microphone 71 is small, and the sound quality is poor; arranging a double-microphone 71 array increases the voice of the sound receiving direction and reduces the noise of the non-sound receiving direction, thereby improving the receiving sensitivity of the audio module 7 to the user's voice.

[0100] Specifically, in the embodiment, the audio module 7 is also provided with an echo cancellation circuit, which reduces the noise generated by the audio module 7 and the influence of the noise in the environment on the sound information received by the microphone 71, and improves the quality of the sound sampling information.

[0101] Specifically, in the embodiment, the audio module 7 is also provided with an echo cancellation circuit, which reduces the noise generated by the audio module 7 and the influence of the noise in the environment on the sound information received by the microphone 71, and improves the quality of the sound sampling information.

[0102] It can be understood that the audio module 7 electrically connected with the host module 2 is also configured with an AI voice interaction function; the microphone 71 collects the sound sampling information of the user's voice and inputs it to the host module 2, and the host module 2 connects to an online large model through a Wi-Fi component or performs voice analysis based on a built-in offline large model to generate a reply.

[0103] It can be understood that the host module 2 converts the large model reply obtained into corresponding text reply data and voice reply data, and sends them to the display module 4 and the audio module 7 respectively, so that the user can obtain the text display reply and the voice playback reply at the same time, and realize the voice and display interaction between the user and the development board 1 of the wearable device.

[0104] Please further refer to Figure 2 , Figure 7 and Figure 8 , in the embodiment, the audio module 7 uses an ES8311 audio codec chip and an ES7210 audio ADC collection chip as shown in Figure 7 , the audio codec chip and the audio ADC collection chip of the audio module 7 are both provided with an ESP32_SCL pin and an ESP32_SDA pin, the ESP32_SCL pin and the ESP32_SDA pin on the two chips are connected with a GPIO14 pin and a GPIO15 pin of the host module 2 respectively, and the host module 2 sends an I2C communication signal to the audio module 7 through the above connection to control the working state of the audio codec chip and the audio ADC collection chip.

[0105] Further, the audio codec chip of the audio module 7 has I2S_MCLK, I2S_SCLK, I2S_LRCK and I2S_DSDIN pins, and the pins are connected with GPIO16, GPIO41, GPIO45 and GPIO40 pins of the master module 2 respectively; the audio ADC acquisition chip has I2S_MCLK, I2S_SCLK, I2S_LRCK and I2S_ASDOUT pins, and the pins are connected with GPIO16, GPIO41, GPIO45 and GPIO42 pins of the master module 2 respectively; the master module 2 and the audio module 7 transmit I2S audio signals through the above connection, the audio codec chip receives and sends the audio information from the master module 2 as output, and the audio ADC acquisition chip transmits the information received by the microphone 71 to the master module 2.

[0106] Further, the audio module 7 also accesses the echo cancellation circuit as shown in Figure 8 Further, the audio module 7 also accesses the echo cancellation circuit as shown in Figure 8 Further, the audio module 7 also accesses the echo cancellation circuit as shown in

[0107] Please refer to Figure 9 The utility model discloses a smart watch 8, including the development board 1 for wearable equipment, watchcase 81 and watchband 82, the development board 1 for wearable equipment is set up in watchcase 81, and display screen 42 at least partial exposure is in watchcase 81, watchcase 81 is installed on watchband 82.

[0108] It can be understood that the smart watch 8 integrally integrates the development board 1 for wearable equipment, saves the design cost and prototype development period of additional design wearable shell of the user, is favorable to the user directly wearable function's function verification, greatly reduces the development threshold of small and medium-sized team and maker.

[0109] The above only describes the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement within the principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A development board for a wearable device, the development board comprising: The utility model relates to a development board for wearable equipment, which comprises a main control module, an expansion module, a display module, a power module and a motion module. The expansion module is electrically connected with the main control module. The expansion module is provided with a debugging interface, which can be plug-in connected with an external data line. The main control module exchanges data with the external data line through USB data signals. The display module is electrically connected with the main control module. The display module is provided with a wiring terminal and a display screen connected to the wiring terminal.

2. The development board for a wearable device of claim 1, wherein: The display screen is a QSPI interface AMOLED display screen.

3. The development board for a wearable device of claim 1, wherein: The main control module controls the screen display of the display screen through QSPI display data signals.

4. The development board for a wearable device of claim 1, wherein: The power module is electrically connected with the main control module.

5. The development board for a wearable device of claim 4, wherein: The display module is also provided with a touch component.

6. The development board for a wearable device of claim 1, wherein: The touch component detects external touch operations, converts and generates touch electric signals, and sends touch feedback signals to the main control module through an I2C communication protocol.

7. The development board for a wearable device of claim 1, wherein: The expansion module is provided with a storage component.

8. The development board for a wearable device of claim 7, wherein: The main control module stores storage signals in the storage card. The expansion module is also provided with at least one sensor pad.

9. The development board for a wearable device of claim 1, wherein: The sensor pad is externally connected with an external sensor and exchanges expansion data signals with the main control module. The sensor pad comprises at least one I2C pad and at least one UART pad.

10. A smart watch, characterized by: The expansion data signals are I2C expansion signals or UART expansion signals. The power module is also provided with a power detection component. The power detection component detects the remaining power of an external power supply connected to the battery interface and sends a power voltage detection signal to the main control module. The development board for wearable equipment is provided with a motion module. The motion module is electrically connected with the main control module. The motion module comprises an inertial measurement component. The inertial measurement component detects the motion state of the development board for wearable equipment and sends the motion state to the main control module. The motion module is also provided with a clock component. The clock component sends a clock synchronization signal to the main control module. The clock component is electrically connected with the power module. When the clock component is powered off, the power module supplies power. The development board for wearable equipment is provided with an audio module. The audio module is electrically connected with the main control module. The main control module controls the audio module through I2C communication signals. The microphone receives external sound sampling information and sends the sound sampling information to the main control module. The smart watch comprises the development board for wearable equipment, a watch case and a watchband. The development board for wearable equipment is sleeved in the watch case, and the display screen is at least partially exposed to the watch case. The watch case is mounted on the watchband.

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