An internet of things based low-power portable data acquisition card

Abstract

The application belongs to the technical field of data acquisition of Internet of Things, and discloses a low-power portable data acquisition card based on Internet of Things. The acquisition card comprises a core control, a low-power sensing acquisition, a wireless communication, an energy storage power supply, a local storage and an audible and visual signal unit. After the acquisition card is powered on, parameters are configured to enter hibernation, and after being woken up at a fixed time, multi-dimensional data are collected, and after preprocessing, network status is judged, data are cached in an abnormal state, and are uploaded to a cloud platform in a normal state, and after transmission is completed, hibernation is performed again. The application solves the problems of high power consumption, poor portability and short endurance of traditional acquisition cards, has the advantages of low power consumption, small size, long endurance and wide adaptation scene, and is suitable for data acquisition in multiple scenes such as industry and environment.

Description

Technical Field

[0001] This invention belongs to the field of Internet of Things (IoT) data acquisition technology, and particularly relates to a low-power portable data acquisition card based on IoT. Background Technology

[0002] With the rapid development of IoT technology, the demand for portable data acquisition devices is increasing in scenarios such as industrial monitoring, environmental sensing, and mobile device data collection. Currently, traditional data acquisition devices have many shortcomings: they are mostly fixed installations, large in size, and poorly portable, making them unsuitable for complex scenarios such as mobile and field environments; they have high overall power consumption, relying heavily on mains power or large-capacity batteries, resulting in short battery life and difficulty in long-term offline operation; their communication modules mostly use high-power wireless protocols or wired transmission, limiting their application in remote scenarios without network cabling; they lack low-power sleep and wake-up mechanisms, leading to significant energy waste during long-term idle operation; their data caching and transmission adaptability is poor, easily resulting in data loss and transmission delays; and they have weak environmental tolerance, lacking adaptability to complex environments such as high and low temperatures and humidity, limiting their application scope. To address these technical deficiencies, this invention proposes a low-power portable data acquisition card based on the Internet of Things. Summary of the Invention

[0003] To address the problems existing in the background technology, the present invention provides a low-power portable data acquisition card based on the Internet of Things.

[0004] A low-power portable data acquisition card based on the Internet of Things, characterized by comprising the following steps:

[0005] S1: After the acquisition card is powered on, it completes hardware initialization, configures low-power operating parameters, and enters standby / sleep mode;

[0006] S2: Set a timed wake-up period. When the wake-up time is reached, a low-power interrupt is triggered to wake up the core control unit.

[0007] S3: If a hardware fault is detected, an audible and visual alarm signal is triggered and a fault log is recorded, ending the current data collection cycle;

[0008] S4: Start the sensor acquisition unit to collect data such as temperature, humidity, voltage, and current of the target scene;

[0009] S5: Perform preprocessing on the collected raw data, including filtering, noise reduction, and format conversion, and remove abnormal data;

[0010] S6: Determine the network connection status of the wireless communication unit. If the network is normal, proceed with the data transmission process.

[0011] S7: If there is a network error, cache the preprocessed data in the local storage unit and mark the data with a timestamp;

[0012] S8: When the network is normal, it uploads cached data and real-time data to the IoT cloud platform via a low-power wireless protocol;

[0013] S9: After the data upload is completed, a successful acquisition sound and light signal is triggered, the sensor acquisition unit and the wireless communication unit are turned off, and the system returns to standby sleep mode, completing a single acquisition process.

[0014] Furthermore, in the aforementioned steps, the hardware layer is responsible for sensor acquisition, wireless communication, power management, and audio-visual prompts, while the software layer is responsible for parameter configuration, data processing, sleep scheduling, and cloud platform integration.

[0015] Furthermore, the parameters such as the timed wake-up period, the number of acquisition channels, and the data filtering threshold are all configured and fixed to the core control unit through the software layer.

[0016] Furthermore, the wireless communication unit and the cloud platform employ an encrypted transparent transmission mechanism to ensure data transmission security, and the communication link status is fed back to the core control unit in real time.

[0017] Furthermore, the local storage unit adopts a circular overwrite mechanism, which automatically overwrites the oldest data when the cached data is full, ensuring efficient utilization of storage resources.

[0018] Furthermore, in the sleep mode, only the real-time clock of the core control unit is powered, while all other modules are powered off, resulting in low static power consumption for the entire machine.

[0019] The low-power portable data acquisition card based on the Internet of Things used in this invention is conducive to realizing real-time data acquisition and wireless transmission on site, improving the convenience of data acquisition, battery life and environmental adaptability. Attached Figure Description

[0020] Figure 1 This is a structural diagram of the low-power portable data acquisition card in this invention.

[0021] Figure 2 This is a flowchart of the low-power portable data acquisition card in this invention. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of the present invention.

[0024] Example 1.

[0025] like Figure 1As shown in the structural diagram of the low-power portable data acquisition card, this embodiment provides a low-power portable data acquisition card based on the Internet of Things, which includes a core control unit, a low-power sensing and acquisition unit, a low-power wireless communication unit, an energy storage power supply unit, a local data storage unit, and an audio-visual signal unit.

[0026] The core control unit is used for:

[0027] It is responsible for hardware scheduling, data preprocessing, sleep / wake control, and instruction execution. It uses a low-power microcontroller (MCU) and is the core control hub of the acquisition card.

[0028] The low-power sensing and acquisition unit is used for:

[0029] Multi-scenario data acquisition, automatic power-off after each acquisition to reduce power consumption, and integration of temperature sensor, humidity sensor, voltage acquisition module and current acquisition module.

[0030] The low-power wireless communication unit is used for:

[0031] It enables long-distance data transmission with IoT cloud platforms, is equipped with an NB-IoT communication module, and supports low-power sleep communication mode.

[0032] The energy storage power supply unit is used for:

[0033] In sleep mode, it achieves microampere-level current supply to ensure long-term battery life.

[0034] The local data storage unit is used for:

[0035] Caches collected data when there is a network error, and supports data timestamp marking and breakpoint resume.

[0036] The aforementioned acoustic-optical signal unit is used for:

[0037] The audio-visual prompts for hardware failure and successful data acquisition consist of an LED indicator and a buzzer.

[0038] Example 2.

[0039] like Figure 2 As shown in the flowchart of the low-power portable data acquisition card, this embodiment provides a low-power portable data acquisition card based on the Internet of Things, which includes:

[0040] S1: After the acquisition card is powered on, the core control unit completes the hardware initialization of each module, configures low-power parameters such as sleep cycle and acquisition frequency, and then enters standby sleep mode.

[0041] S2: The core control unit has a built-in timer that sets a wake-up period. When the period is reached, a low-power interrupt is triggered to wake up the core control unit.

[0042] S3: If a hardware fault is detected, the core control unit triggers an audible and visual alarm signal, the LED red light stays on and the buzzer sounds intermittently, and at the same time the fault log is written to the local storage unit, ending the current data collection cycle.

[0043] S4: The core control unit sends a start command to the low-power sensing and acquisition unit to start each sensor to collect temperature, humidity, device voltage, and operating current data of the target scene.

[0044] S5: The core control unit performs filtering and noise reduction on the collected raw data, removes abnormal data that exceeds the preset threshold, and completes the data format standardization conversion.

[0045] S6: The core control unit detects the network connection status of the low-power wireless communication unit and determines whether it is communicating normally with the IoT cloud platform.

[0046] S7: If the network connection is abnormal, the core control unit will cache the pre-processed valid data to the local data storage unit and mark the collection timestamp of each data.

[0047] S8: If the network connection is normal, the core control unit will package the local cached data and the real-time data to the IoT cloud platform through the NB-IoT communication protocol.

[0048] S9: After the data upload is completed, a successful acquisition sound and light signal is triggered. The green LED stays on and the buzzer sounds once. The core control unit sends a power-off command to shut down the low-power sensor acquisition unit and the low-power wireless communication unit. The whole machine returns to standby sleep mode, completing the single acquisition process.

[0049] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A low-power portable data acquisition card based on the Internet of Things, characterized in that, Includes the following steps: S1: After the acquisition card is powered on, it completes hardware initialization, configures low-power operating parameters, and enters standby / sleep mode; S2: Set a timed wake-up period. When the wake-up time is reached, a low-power interrupt is triggered to wake up the core control unit. S3: If a hardware fault is detected, an audible and visual alarm signal is triggered and a fault log is recorded, ending the current data collection cycle; S4: Start the sensor acquisition unit to collect data such as temperature, humidity, voltage, and current of the target scene; S5: Perform preprocessing on the collected raw data, including filtering, noise reduction, and format conversion, and remove abnormal data; S6: Determine the network connection status of the wireless communication unit. If the network is normal, proceed with the data transmission process. S7: If there is a network error, cache the preprocessed data in the local storage unit and mark the data with a timestamp; S8: When the network is normal, it uploads cached data and real-time data to the IoT cloud platform via a low-power wireless protocol; S9: After the data upload is completed, a successful acquisition sound and light signal is triggered, the sensor acquisition unit and the wireless communication unit are turned off, and the system returns to standby sleep mode, completing a single acquisition process.

2. The system according to claim 1, characterized in that, The hardware architecture includes a core control unit, a low-power sensing and acquisition unit, a low-power wireless communication unit, an energy storage and power supply unit, and a local data storage unit.

3. The system according to claim 2, characterized in that, The low-power sensing and acquisition unit integrates multiple types of sensors and adopts an intermittent wake-up acquisition mode. It automatically cuts off power after each acquisition to reduce idle power consumption.

4. The system according to claim 2, characterized in that, The low-power wireless communication unit adopts the NB-IoT communication protocol, supports long-distance low-power data transmission, and is compatible with IoT cloud platforms.

5. The system according to claim 2, characterized in that, The energy storage power supply unit uses a rechargeable lithium battery paired with a low-power power management chip, supports microampere-level power supply in sleep mode, and has a battery life of no less than 30 days.

6. The system according to claim 2, characterized in that, The local data storage unit uses a Flash storage chip, supports caching of at least 10,000 data entries, and automatically uploads the cached data after the network is restored, enabling breakpoint resume.

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