Low-power-consumption Bluetooth multifunctional sensor system based on lithium thionyl chloride battery

Abstract

The utility model provides a low-power-consumption Bluetooth multifunctional sensor system based on a lithium thionyl chloride battery. The low-power-consumption Bluetooth multifunctional sensor system comprises a sensor assembly, an MCU main control chip, a Bluetooth BLE chip and a power supply system which are in signal connection, the power supply system is electrically connected with the sensor assembly, the MCU main control chip and the Bluetooth BLE chip. According to the utility model, the same chip is compatible with the MCU and BLE functions, so that the effect that one chip has multiple purposes is achieved, and the use efficiency of the chip is improved; the high-linearity and high-precision gas pressure sensor, the temperature and humidity sensor and the acceleration sensor are matched and integrated through an I2C integrated circuit bus, the efficiency of high performance, high reliability and long service life is achieved, the application range is wider for multiple application scenes, and wide application and popularization prospects are achieved.

Description

Technical Field

[0001] This utility model relates to the field of sensor system technology, and more specifically, to a low-power Bluetooth multi-functional sensor system based on a lithium thionyl chloride battery. Background Technology

[0002] With the rapid development of the Internet of Things (IoT), the interconnection of everything has entered every household. The IoT refers to the interconnection of various physical devices, sensors, and electronic devices, enabling data exchange and intelligent control via the internet. IoT products not only need to be functionally diverse but also require features such as mobile device control and intelligent control capabilities.

[0003] However, existing sensor devices on the global market generally suffer from problems such as measurement results being affected by the properties of the measured object, measurement results being significantly affected by external environmental interference, systematic and random errors having a significant impact on the results, poor device stability, and the need for post-processing. Therefore, existing sensor components inevitably have defects such as low reliability, unstable function, high power consumption, and short lifespan, resulting in a poor user experience. Utility Model Content

[0004] Therefore, the purpose of this utility model is to design a low-power Bluetooth multi-functional sensor system based on a lithium thionyl chloride battery. It uses the same chip as both the MCU main control chip and the Bluetooth BLE chip, is compatible with MCU+BLE functions, and achieves multiple functions and tasks through a single chip, realizing a multi-purpose approach. It can transmit data in real time via Bluetooth while reducing power consumption and extending service life; achieving high performance, high reliability, and long lifespan to meet the growing user experience demands.

[0005] This invention provides a low-power Bluetooth multi-functional sensor system based on a lithium thionyl chloride battery, comprising: a sensor component, an MCU main control chip, and a Bluetooth BLE chip connected by signals, and a power supply system; the power supply system is electrically connected to the sensor component, the MCU main control chip, and the Bluetooth BLE chip respectively.

[0006] The Bluetooth BLE chip accurately identifies various states of IoT devices, including battery level and environmental conditions. It also captures the movement or angle of the IoT device and dynamically adjusts the data parameters of various sensors, making it simple, convenient, and highly operable.

[0007] Preferably, the Nordic52820 chip is used as both the MCU main control chip and the Bluetooth BLE chip.

[0008] Furthermore, the sensor assembly includes a gas pressure sensor, an acceleration sensor, and a temperature and humidity sensor. These sensors are connected to the MCU main control chip and the Bluetooth BLE chip via an I2C integrated circuit bus. The MCU main control chip and the Bluetooth BLE chip, combined with the high-linearity, high-precision gas pressure sensor, temperature and humidity sensor, and acceleration sensor via the I2C integrated circuit bus, achieve high-performance and high-reliability product performance.

[0009] Furthermore, the power system employs a lithium thionyl chloride battery, which is directly electrically connected to the gas pressure sensor, acceleration sensor, and temperature and humidity sensor, respectively. The lithium thionyl chloride battery directly powers each sensor.

[0010] In a preferred embodiment of this invention, the power supply system uses a single battery rated at 3.6V, and the current consumption of the sensor assembly is:

[0011] The current is 2.1 μA under the conditions of 1 Hz humidity and temperature.

[0012] The voltage is 3.1 μA under operating conditions of 1 Hz pressure and temperature.

[0013] The voltage is 3.7 μA under the conditions of 1 Hz humidity, pressure and temperature.

[0014] The voltage is 90 μA under ULP ultra-low power mode, p / h / T and air quality conditions;

[0015] The value is 0.9 mA under LP low power mode, p / h / T and air quality conditions;

[0016] The operating value is 3.9 mA under standard gas scan mode.

[0017] In the customized operating mode, the p / h / T / gas value is 0.15 μA under sleep mode conditions.

[0018] Preferably, the key parameters of the gas pressure sensor are: H2S scanning standard scan speed of 10.8s / scan; standard scan charging of 0.18 mAh (5 scans - 1 minute); power consumption output data processing in ultra-low power mode <0.1 mA; main direct outputs: air quality index (IAQ), bvOc and CO2 equivalent (ppm), gas scan result (%) and intensity level.

[0019] The key parameters of the humidity sensor are: response time (-63%) -8s, accuracy tolerance ±3%rh, and hysteresis ±1.5%rh; the key parameters of the gas pressure sensor are: RMS noise 0.12 Pa (equivalent to 1.7 cmo) and offset temperature coefficient ±1.3 Pa / K (equivalent to ±10.9 cm); and the key parameter of the temperature sensor is: absolute accuracy ±0.5°C (0-65°C).

[0020] Furthermore, the power system also includes a reed switch with magnetic induction (magnetic attraction), which is connected in series between the lithium thionyl chloride battery and the MCU main control chip and the Bluetooth BLE chip. The reed switch with magnetic induction is a normally open switch. When the low-power Bluetooth multi-function sensor system is not in use, a magnet can be brought close to the system at a distance of about 2-3 cm. Under the action of magnetism, the reed switch with magnetic induction inside the machine will be opened, and the system device will be powered off, making operation convenient and quick.

[0021] Furthermore, the Bluetooth Low Energy multi-function sensor system also includes a JTAG download interface, which is connected to the MCU main control chip and the Bluetooth BLE chip. The JTAG download interface is used to implement download functions, perform hardware debugging, firmware upgrades, circuit testing, etc.

[0022] Furthermore, the Bluetooth Low Energy (BLE) multi-function sensor system also includes a debug interface, which is connected to the MCU main control chip and the Bluetooth BLE chip. The debug interface is used for software debugging to help locate and resolve errors in the software.

[0023] Furthermore, the MCU main control chip and the Bluetooth BLE chip are equipped with BLE antennas, which can realize wireless signal transmission with high power and long signal propagation distance.

[0024] Furthermore, the low-power Bluetooth multi-function sensor system is externally equipped with a housing, and the housing structure is entirely sealed. Preferably, the housing achieves an IP67 rating for waterproofing, dustproofing, and anti-static properties, ensuring the lifespan of the low-power Bluetooth multi-function sensor.

[0025] Furthermore, the housing is provided with multiple (preferably two) fixing holes, and the low-power Bluetooth multi-function sensor system is fixedly connected to the corresponding usage area by multiple (preferably two) screws. The screw connection method not only improves the connection strength, but also facilitates assembly, disassembly, and maintenance.

[0026] This utility model's low-power Bluetooth multi-functional sensor system can be applied to scenarios where real-time environmental monitoring is achieved through IoT control. Examples include various gas detection scenarios such as indoor and outdoor air quality measurement, detection of bad breath or spoiled food based on volatile sulfur compounds (an indicator of bacterial growth), detection of abnormal gases and odors (such as diaper status detection in case of leaks or fires), early detection of odors and unpleasant smells in infant care, and wildfire detection. Simultaneously, it can also read the motion state of the sensor components through an accelerometer (motion sensor) and read the ambient temperature and humidity through a temperature and humidity sensor.

[0027] Compared with the prior art, the beneficial effects of this utility model are:

[0028] This utility model provides a low-power Bluetooth multi-functional sensor system based on a lithium thionyl chloride battery. It uses the Nordic52820 chip as the MCU main control chip and the Bluetooth BLE chip, achieving multiple functions and handling multiple tasks with a single chip. It is compatible with MCU+BLE functions, achieving a multi-purpose effect and improving chip efficiency. It can transmit data in real-time via Bluetooth while reducing power consumption and extending lifespan. Through the I2C integrated circuit bus, it is paired with a high-linearity, high-precision gas pressure sensor, temperature and humidity sensor, and acceleration sensor, thus achieving high performance, high speed, high efficiency, high reliability, and long lifespan, meeting the growing user experience demands. Furthermore, it is simple and efficient to develop, flexible in configuration, and easy to operate, making it more applicable to various application scenarios. The system has good maintainability and stability, with optimized functions, more stable performance, higher reliability, lower power consumption, and longer lifespan, showing broad prospects for widespread application. Attached Figure Description

[0029] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention.

[0030] In the attached diagram:

[0031] Figure 1 This is a schematic diagram of the architecture of the low-power Bluetooth multi-functional sensor system based on a lithium thionyl chloride battery.

[0032] The markings in the attached figure are as follows:

[0033] 1. Sensor assembly; 2. Nordic52820 chip; 3. Lithium thionyl chloride battery; 4. Reed switch magnetic induction switch; 5. JTAG download interface; 6. Debug interface. Detailed Implementation

[0034] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0035] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0036] It should be understood that although the terms first, second, and third may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to determination."

[0037] This utility model provides a low-power Bluetooth multi-functional sensor system based on a lithium thionyl chloride battery. See [link to relevant documentation]. Figure 1 As shown, the Nordic52820 chip 2 serves as both the MCU main control chip and the Bluetooth BLE chip. The power supply system is electrically connected to both sensor component 1 and Nordic52820 chip 2. Sensor component 1 is signal-connected to Nordic52820 chip 2. Sensor component 1 includes a gas pressure sensor, an acceleration sensor, and a temperature and humidity sensor. The gas pressure sensor, acceleration sensor, and temperature and humidity sensor are signal-connected to Nordic52820 chip 2 via an I2C integrated circuit bus.

[0038] The power supply system uses a lithium thionyl chloride battery 3, which is directly electrically connected to the gas pressure sensor, acceleration sensor, and temperature and humidity sensor, respectively, providing power to each sensor. Using a single battery rated at 3.6V, the current consumption of sensor assembly 1 is as follows: 2.1 μA under 1Hz humidity and temperature conditions; 3.1 μA under 1Hz pressure and temperature conditions; 3.7 μA under 1Hz humidity, pressure, and temperature conditions; 90 μA under ULP mode, p / h / T, and air quality conditions; 0.9 mA under LP mode, p / h / T, and air quality conditions; 3.9 mA under standard gas scan mode; and 0.15 μA under customized operation mode, p / h / T / gas sleep mode.

[0039] The key parameters of the gas pressure sensor are: H2S scanning standard scan speed of 10.8s / scan; standard scan charging of 0.18 mAh (5 scans - 1 minute); power consumption output data processing in ultra-low power mode <0.1 mA; main direct outputs: air quality index (IAQ), bvOc and CO2 equivalent (ppm), gas scan result (%) and intensity level.

[0040] The key parameters of the humidity sensor are: response time (-63%) -8s, accuracy tolerance ±3%rh, and hysteresis ±1.5%rh; the key parameters of the gas pressure sensor are: RMS noise 0.12 Pa (equivalent to 1.7 cmo) and offset temperature coefficient ±1.3 Pa / K (equivalent to ±10.9 cm); and the key parameter of the temperature sensor is: absolute accuracy ±0.5°C (0-65°C).

[0041] Accelerometers can be used to dynamically adjust the state of sensor devices and machine performance under conditions of motion or stillness, enabling motion monitoring.

[0042] A reed magnetic induction switch 4 is connected in series between the lithium thionyl chloride battery 3 and the Nordic 52820 chip 2. The reed magnetic induction switch 4 is a normally open switch. When the low-power Bluetooth multi-function sensor system is not in use, bringing a magnet close to the system at a distance of about 2-3 cm will cause the reed magnetic induction switch 4 inside the device to open under the action of magnetism, thus powering off the system.

[0043] This Bluetooth Low Energy (BLE) multi-function sensor system is equipped with a JTAG download interface 5, which is connected to the Nordic52820 chip 2. JTAG download interface 5 is used for downloading, hardware debugging, firmware upgrades, circuit testing, and other functions. The system also includes a debug interface 6, which is connected to the Nordic52820 chip 2. The debug interface is used for software debugging, helping to locate and resolve software errors.

[0044] The Nordic52820 chip 2 is also equipped with a BLE antenna, enabling high-power wireless signal transmission with a long signal propagation distance.

[0045] The housing of this low-power Bluetooth multi-function sensor system has two mounting holes, allowing it to be easily fixed to the corresponding application area with just two screws. This simplifies installation and greatly improves ease of use.

[0046] This low-power Bluetooth multi-function sensor system is small in size, consumes little power, and has a large battery capacity, which can better extend the product's usage time and provide users with a better experience. Therefore, the application scenarios of this low-power Bluetooth multi-function sensor system are particularly diverse, such as: automotive, kitchen, warehouse detection, baby care rooms, etc. With its excellent sensitivity, it can achieve rapid response and information reporting, ensuring user safety.

[0047] The low-power Bluetooth multi-functional sensor system provided in this embodiment can be applied to scenarios where real-time environmental monitoring is achieved through IoT control. Examples include various gas detection scenarios such as indoor and outdoor air quality measurement, detection of bad breath or spoiled food based on volatile sulfur compounds (an indicator of bacterial growth), detection of abnormal gases and odors (such as diaper status detection in case of leaks or fires), early detection of odors and unpleasant smells in infant care, and wildfire detection. Simultaneously, it can also read the motion state of the sensor components through an accelerometer (motion sensor) and read the ambient temperature and humidity through a temperature and humidity sensor.

[0048] The low-power Bluetooth multi-functional sensor system in this embodiment features a fully enclosed structure, IP67 waterproof, dustproof, and anti-static rating, with an estimated service life of over 5 years. Based on excellent chip processing performance, it effectively extends the device's lifespan and ensures high reliability.

[0049] The basic workflow and functional implementation process of the low-power Bluetooth multi-function sensor system in this embodiment are as follows:

[0050] The entire low-power Bluetooth multi-functional sensor system is powered by a lithium thionyl chloride battery. The MCU main control chip communicates with the I2C integrated circuit bus to read environmental information in real time. Users can increase the update of environmental information by setting the sampling rate. The information is transmitted to the user terminal by the Bluetooth BLE chip, achieving the efficiency of real-time monitoring.

[0051] By utilizing the ultra-low power consumption and sleep mode of the sensor components, battery usage can be improved, thus enhancing the integrity and efficiency of battery use.

[0052] When environmental factors such as temperature change, the sensor components can be paired with a cloud service platform to enable alarm functions and upload data to a Bluetooth BLE chip. The data is then transmitted to the user's terminal via a Bluetooth BLE antenna for viewing and maintenance.

[0053] The technical solution of this utility model has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

[0054] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A low-power Bluetooth multi-functional sensor system based on a lithium thionyl chloride battery, characterized in that, include: The system includes a sensor assembly, an MCU main control chip, and a Bluetooth BLE chip for signal connection, and a power supply system; the power supply system is electrically connected to the sensor assembly, the MCU main control chip, and the Bluetooth BLE chip respectively. The Nordic52820 chip is used as both an MCU main control chip and a Bluetooth BLE chip; The sensor assembly includes a gas pressure sensor, an acceleration sensor, and a temperature and humidity sensor; the gas pressure sensor, acceleration sensor, and temperature and humidity sensor are respectively connected to the MCU main control chip and the Bluetooth BLE chip via an I2C integrated circuit bus; The power system uses a lithium thionyl chloride battery, which is directly electrically connected to the gas pressure sensor, acceleration sensor, and temperature and humidity sensor, respectively. The power system also includes a reed switch, which is connected in series between the lithium thionyl chloride battery and the MCU main control chip and the Bluetooth BLE chip. The reed switch is a normally open switch.

2. The low-power Bluetooth multi-functional sensor system based on a lithium thionyl chloride battery according to claim 1, characterized in that, It also includes a JTAG download interface, which is connected to the MCU main control chip and the Bluetooth BLE chip.

3. The low-power Bluetooth multi-functional sensor system based on a lithium thionyl chloride battery according to claim 1, characterized in that, It also includes a debug interface, which is connected to the MCU main control chip and the Bluetooth BLE chip.

4. The low-power Bluetooth multi-functional sensor system based on a lithium thionyl chloride battery according to claim 1, characterized in that, The MCU main control chip and the Bluetooth BLE chip are equipped with BLE antennas.

5. The low-power Bluetooth multi-functional sensor system based on a lithium thionyl chloride battery according to claim 1, characterized in that, The low-power Bluetooth multi-function sensor system is externally equipped with a housing, and the housing is completely sealed.

6. The low-power Bluetooth multi-functional sensor system based on a lithium thionyl chloride battery according to claim 5, characterized in that, The housing has multiple fixing holes, and the low-power Bluetooth multi-function sensor system is fixedly connected to the corresponding usage area by multiple screws.

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