Intelligent code scanning watch mainboard
By integrating a processor module, power module, barcode scanning module, under-display NFC module, and WiFi module into a miniaturized design, the problems of large size, unstable power supply, and susceptibility to interference in traditional smartwatches' barcode scanning devices have been solved. This has resulted in a high-performance and multifunctional smart barcode scanning watch motherboard, improving scanning accuracy and communication stability, and extending device battery life.
Patent Information
- Application Number
- CN202423179133.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-23
AI Technical Summary
Traditional smartwatches have bulky scanning devices that are difficult to integrate, have unstable power supplies, are susceptible to signal interference, have unstable communication, and poor power management, resulting in insufficient battery life and making it difficult to meet the needs of high-frequency usage scenarios.
The smart watch motherboard features a miniaturized design, integrating a processor module, power module, scanning module, under-display NFC module, and WiFi module. It improves power supply stability through a low-ripple LDO power supply module, optimizes NFC antenna matching, uses a WiFi 6 module to support high-speed data transmission, and dynamically adjusts the battery power supply path through a power management unit.
It achieves a miniaturized, high-efficiency, and multifunctional integrated design, improving scanning accuracy and communication reliability, extending device battery life, and supporting high-frequency data interaction in complex application scenarios.
Smart Images
Figure CN223501307U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of barcode scanning equipment technology, and in particular to a motherboard for a smart barcode scanning watch. Background Technology
[0002] With the rapid development of smart devices, smartwatches have gradually become widely used portable devices for personal communication, payment, and information processing. However, traditional smartwatch designs suffer from the following technical problems: Traditional barcode scanners are bulky and difficult to integrate into the miniaturized design of smartwatches. Simultaneously, the stable power supply required for high-speed scanning is difficult to guarantee, potentially leading to image acquisition delays or failures. Furthermore, signal interference may occur during scanning, further reducing efficiency and accuracy. Existing NFC modules typically use traditional antenna designs, which are susceptible to external signal interference, resulting in a high communication failure rate. Additionally, the close arrangement of antennas and other electronic components can cause interference with screen drive signals, affecting communication stability and failing to meet the high reliability and sensitivity requirements of contactless payments. Traditional smartwatches mostly use 2.4GHz or 5GHz WiFi modules, which have low transmission rates and low frequency band utilization efficiency, making it difficult to support the high-frequency data interaction needs in complex application scenarios. Power management issues in module design can also lead to instability in wireless communication. As wearable devices, smartwatches have limited battery capacity. Existing designs struggle to achieve efficient power management between functional modules, resulting in insufficient battery life and limiting the device's application range in high-frequency usage scenarios. Utility Model Content
[0003] In view of this, this utility model proposes a smart barcode scanning watch motherboard, which achieves a miniaturized, high-efficiency, and multifunctional integrated design. This utility model provides the following technical solution:
[0004] A smart barcode scanning watch motherboard includes a processor module connected to: a power module including a battery and a power management unit, the power management unit dynamically adjusting the battery power supply path and communicating with the processor module; a barcode scanning module including a barcode scanner communicating with the processor module via a MIPI-CSI-2 interface, and a low-ripple LDO power supply module electrically connected to the power management unit to improve power supply stability and support high-precision barcode scanning operations; an under-display NFC module including an NFC controller communicating with the processor module and an antenna electrically connected to the NFC controller, the antenna being contactlessly fixed to the watch casing to achieve stable contactless communication; and a WiFi module including a WiFi 6 communication component communicating with the processor module via an SDIO interface to support high-speed network data transmission.
[0005] Optionally, the data signal of the barcode scanner is connected to the pin group of the processor module via differential pairs; the signal pins of the MIPI-CSI-2 interface are connected differentially to the MIPI-CSI-2 control pins and GND of the processor module to achieve shielding and reduce communication interference.
[0006] Optionally, the input terminal of the low-ripple LDO power supply module is connected to the VSYS pin of the power management unit through a decoupling capacitor; the output terminal of the low-ripple LDO power supply module is connected to the power supply pin of the barcode scanner, and high-frequency noise is eliminated through a filtering network.
[0007] Optionally, the NFC controller is connected to the I2C interface pin of the processor module via its I2C signal pin to realize signal transmission and status feedback; the power supply pin of the NFC controller is electrically connected to the VSYS pin of the power management unit; the antenna is connected to the radio frequency terminal of the NFC controller, and impedance matching is achieved through a matching network to optimize communication performance, the matching network including inductor and capacitor components.
[0008] Optionally, the WiFi 6 communication component is connected to the SDIO pin of the processor module via an SDIO interface.
[0009] Optionally, the SD_CLK, SD_CMD, and SD_DATA pins of the WiFi 6 communication component are connected to the SD_CLK, SD_CMD, and SD_DATA pins of the processor module, respectively.
[0010] Optionally, the power input terminal of the WiFi 6 communication component is connected to the output terminal of the low-ripple LDO power supply module, and the low-ripple LDO power supply module outputs a 3.3V voltage to the WiFi 6 communication component.
[0011] According to the technical solution of this utility model, a smart barcode scanner motherboard with miniaturized, high-efficiency, and multifunctional integrated design is achieved by integrating a processor module, a power module, a barcode scanning module, an under-display NFC module, and a WiFi module. A low-ripple LDO power supply module improves the power supply stability of the barcode scanning module, supporting high-precision barcode scanning operations. An optimized matching design between a contactless fixed antenna and the NFC controller enhances anti-interference capabilities and communication reliability. Communication components supporting the WiFi 6 standard, combined with an SDIO high-speed interface, enhance wireless data transmission rate and stability. Dynamic adjustment of the battery power supply path by a power management unit extends the device's battery life and supports complex application scenarios. Attached Figure Description
[0012] For illustrative and not limiting purposes, the present invention will now be described in conjunction with embodiments and accompanying drawings, wherein:
[0013] Figure 1 This is a schematic diagram of the first part of the scanning module in the embodiment of this utility model;
[0014] Figure 2 This is a schematic diagram of the second part of the scanning module in this embodiment of the utility model;
[0015] Figure 3 This is a schematic diagram of the third part of the scanning module in this utility model embodiment;
[0016] Figure 4 This is a schematic diagram of the first part of the WiFi module in this embodiment of the utility model;
[0017] Figure 5 This is a schematic diagram of the second part of the WiFi module in this embodiment of the utility model;
[0018] Figure 6 This is a circuit diagram of the under-display NFC module in an embodiment of this utility model. Detailed Implementation
[0019] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.
[0020] It should be noted that the terms "first," "second," etc., in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0021] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.
[0022] Furthermore, some of the aforementioned terms, besides indicating location or positional relationships, may also have other meanings. For example, the term "above" may, in certain circumstances, indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances. Additionally, the term "multiple" should mean two or more.
[0023] It should be noted that, where there is no conflict, the embodiments and features of the embodiments of this application can be combined with each other. The embodiments of this application will be described in detail below with reference to the accompanying drawings.
[0024] refer to Figures 1-6 This embodiment discloses a smart barcode scanning watch motherboard, including a processor module. The processor module uses the MT6769V / CZ platform and is connected to: a power module, including a battery and a power management unit, wherein the power management unit is used to dynamically adjust the battery power supply path and is communicatively connected to the processor module; a barcode scanning module, including a barcode scanner that communicates with the processor module via a MIPI-CSI-2 interface, and a low-ripple LDO power supply module that is electrically connected to the power management unit to improve power supply stability and support high-precision barcode scanning operations; an under-display NFC module, including an NFC controller that communicates with the processor module and an antenna that is electrically connected to the NFC controller, wherein the antenna is non-contactly fixed to the watch casing to achieve stable non-contact communication; and a WiFi module, including a WiFi 6 communication component that communicates with the processor module via an SDIO interface to support high-speed network data transmission.
[0025] The CM30 barcode scanner is selected to support the acquisition of both 1D and 2D barcode images. It has a small footprint, fitting well within the internal space of the watch, and supports image processing up to 25 megapixels at 30 frames per second. The data signal of the scanner is connected to the pin group of the processor module via differential pairs. The signal pins of the MIPI-CSI-2 interface are differentially connected to the MIPI-CSI-2 control pins and GND of the processor module to achieve shielding and reduce communication interference. Specifically, the MIPI-CSI-2 interface of the CM30 scanner is connected to the corresponding pins of the processor module through the CSI_CLK_P / N and CSI_DATA_P / N pins, with differential signal routing and GND shielding to reduce interference.
[0026] The low-ripple LDO power supply module uses a low-power chip, BCT2186ELA33-TR (shown as U1806 in the figure). Its input is connected to the VSYS pin of the power management unit via a decoupling capacitor. The output of the low-ripple LDO power supply module is connected to the power pin of the barcode scanner, and a filtering network eliminates high-frequency noise. The power supply module provides a stable 3.3V voltage through the low-ripple LDO. The LDO's input is connected to the power management unit via the VSYS pin, and its output is connected to the barcode scanner's VDD pin. The LDO's feedback pin optimizes dynamic response through a resistor network and capacitor grounding. A 1uF filter capacitor is used and positioned close to the barcode scanner.
[0027] refer to Figure 6The NFC controller includes an NFC chip U1701, which is connected to the I2C interface pin of the processor module via its I2C signal pin to achieve signal transmission and status feedback. The power supply pin of the NFC controller is electrically connected to the VSYS pin of the power management unit. The antenna is connected to the radio frequency terminal of the NFC controller, and impedance matching is achieved through a matching network to optimize communication performance. The matching network includes inductor and capacitor components. Specifically, SCL (I²C clock): connected to the I²C interface clock pin of the processor module on the motherboard, used for clock signal transmission; SDA (I²C data): connected to the I²C interface data pin of the processor module on the motherboard, used for data communication; SCL and SDA use short-path wiring and are placed close to the motherboard ground plane (GND) to reduce high-frequency signal interference. The U1701's VCC pin is powered by a low-ripple LDO module. The LDO's input is connected to the motherboard's VSYS power rail, and its output provides a stable 3.3V voltage. Decoupling capacitors are added to the power path to reduce power supply noise and stabilize the power supply. The LDO module's output is directly connected to the U1701's VCC pin, and the power management unit dynamically manages the entire power supply chain. The U1701's RF pins (RF_IN and RF_OUT) are connected to the NFC antenna through a matching network. Inductors and capacitors in the matching network are placed close to the RF pins to optimize signal impedance matching, resulting in a short and low-impedance signal transmission path and ensuring RF signal quality. The antenna's ground terminal is connected to the motherboard ground (GND) through an independent grounding path to reduce high-frequency signal coupling and noise interference. The parameters of the U1701 and NFC antenna matching network were optimized through testing, and the values of the matching components were adjusted to ensure a stable output frequency of 13.56MHz. The antenna is positioned at the edge of the watch screen, and the NFCCON file was modified multiple times to avoid interference, ultimately achieving a card-swiping distance of over 45mm.
[0028] refer to Figure 4 and Figure 5The WiFi 6 communication component uses the AP6257S model as the WiFi chip, shown as U3504 in the figure. The WiFi 6 communication component also includes a U3503 buck regulator. The WiFi chip supports the 802.11 a / b / g / n / ac / ax protocol, features a 2T2R dual-antenna configuration, integrates Bluetooth 5.1 functionality, supports UART and PCM interface communication, and uses the SDIO V3.0 / 2.0 protocol for WiFi data transmission, providing high-speed, low-power communication capabilities. Specifically, the WiFi 6 communication component communicates with the SDIO pins of the processor module via the SDIO interface. The SD_CLK, SD_CMD, and SD_DATA pins of the WiFi 6 communication component are respectively connected to the SD_CLK, SD_CMD, and SD_DATA pins of the processor module. This is achieved as follows: SD_CLK (clock signal): connected to the SD_CLK pin of the processor module for clock synchronization signal transmission; SD_CMD (command signal): connected to the SD_CMD pin of the processor module for command and response communication; SD_DATA0-3 (data signals): connected to the SD_DATA0-3 pins of the processor module respectively for parallel data transmission. The power input of the WiFi 6 communication component is connected to the output of the low-ripple LDO power supply module, which outputs 3.3V to the WiFi 6 communication component. Specifically, the VCC pin of the module is connected to the output of the low-ripple LDO module to provide a stable 3.3V voltage; the input of the LDO module is connected to the motherboard power rail VSYS through decoupling capacitors (10μF and 0.1μF) to ensure stable power input; the feedback pin of the LDO is connected to the output through a resistor network to optimize dynamic response performance. The WiFi module's RF ports ANT1 and ANT2 are connected to the dual-band antenna, and signal transmission performance is optimized through a matching network. The matching network consists of a 10nH inductor and a 5.6pF capacitor, and is located close to the WiFi module's RF ports. The integrated Bluetooth function is connected to the processor module's UART_RXD pin via BT_TXD; BT_RXD is also connected to the processor module's UART_TXD pin; PCM_IN, PCM_OUT, and PCM_CLK are connected to the processor's audio control interface for audio signal processing.
[0029] In summary, this embodiment presents a smart watch motherboard design that integrates high-precision barcode scanning, stable contactless communication, and high-speed network transmission. It utilizes a low-ripple LDO to provide stable power to the scanning module, optimizes the NFC controller and antenna matching to enhance anti-interference capabilities, and enables real-time uploading of scanned data via high-speed SDIO communication based on a WiFi 6 module. Within a compact watch size, this design effectively solves the problems of limited functional integration, unstable communication, and excessive power consumption found in traditional watches through efficient power management and refined circuit optimization. It significantly improves the device's scanning performance, payment reliability, and network transmission efficiency, providing an innovative technical solution for the smart wearable device field.
[0030] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can occur depending on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. A smart barcode scanning watch motherboard, comprising a processor module, characterized in that, The processor module is connected to: The power module includes a battery and a power management unit, wherein the power management unit is used to dynamically adjust the battery power supply path and is communicatively connected to the processor module. The barcode scanning module includes a barcode scanner that communicates with the processor module via a MIPI-CSI-2 interface, and a low-ripple LDO power supply module that is electrically connected to the power management unit, for improving power supply stability and supporting high-precision barcode scanning operations. The under-display NFC module includes an NFC controller that is communicatively connected to the processor module and an antenna that is electrically connected to the NFC controller. The antenna is non-contactly fixed to the casing of the barcode scanner to achieve stable non-contact communication. The WiFi module includes a WiFi 6 communication component, which communicates with the processor module via an SDIO interface to support high-speed network data transmission.
2. The smart barcode scanning watch motherboard according to claim 1, characterized in that, The data signal of the barcode scanner is connected to the pin group of the processor module via differential pairs; The signal pins of the MIPI-CSI-2 interface are connected differentially to the MIPI-CSI-2 control pins and GND of the processor module to achieve shielding and reduce communication interference.
3. The smart barcode scanning watch motherboard according to claim 1, characterized in that, The input terminal of the low-ripple LDO power supply module is connected to the VSYS pin of the power management unit through a decoupling capacitor. The output of the low-ripple LDO power supply module is connected to the power pin of the barcode scanner, and high-frequency noise is eliminated through a filtering network.
4. The smart barcode scanning watch motherboard according to claim 1, characterized in that, The NFC controller is connected to the I2C interface pin of the processor module via its I2C signal pin to realize signal transmission and status feedback; The power supply pin of the NFC controller is electrically connected to the VSYS pin of the power management unit; The antenna is connected to the radio frequency terminal of the NFC controller, and impedance matching is achieved through a matching network to optimize communication performance. The matching network includes inductor and capacitor components.
5. The smart barcode scanning watch motherboard according to claim 1, characterized in that, The WiFi 6 communication component is connected to the SDIO pin of the processor module via the SDIO interface.
6. The smart barcode scanning watch motherboard according to claim 5, characterized in that, The SD_CLK, SD_CMD, and SD_DATA pins of the WiFi 6 communication component are respectively connected to the SD_CLK, SD_CMD, and SD_DATA pins of the processor module.
7. The smart barcode scanning watch motherboard according to claim 6, characterized in that, The power input terminal of the WiFi 6 communication component is connected to the output terminal of the low ripple LDO power supply module, and the low ripple LDO power supply module outputs a 3.3V voltage to the WiFi 6 communication component.