Ultra-low power consumption high-precision wireless temperature acquisition device circuit
By adopting a circuit structure that incorporates a high-precision temperature sensor and a wireless communication module, the problems of high power consumption and low accuracy in existing temperature acquisition devices are solved, achieving low-power, high-precision temperature acquisition and meeting the requirements for portability and wireless transmission.
Patent Information
- Application Number
- CN202520040816.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-08
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-01-08
AI Technical Summary
Existing temperature acquisition devices have complex circuit structures, high power consumption, low accuracy, require external power supply, are inflexible, cannot transmit wirelessly, and are difficult to maintain, thus failing to meet the requirements for high accuracy and portability.
It employs a high-precision temperature sensor and a wireless communication module, combined with a microcontroller and battery power, to achieve wireless data transmission, reduce power consumption, and improve temperature measurement accuracy.
It achieves low power consumption, portability, and high-precision temperature acquisition, can work normally without external power supply, and is convenient for wireless transmission, reducing system cost and maintenance difficulty.
Smart Images
Figure CN223955020U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to temperature acquisition device's circuit structure technical field. BACKGROUND
[0002] The circuit structure setting implementation method of the existing temperature acquisition device is complex, multiple comparators and peripheral components are used, the production cost is higher, the general power consumption is larger, the problem of larger power consumption leads to that the device can only be powered by an external power supply, this power supply mode is very inflexible when the device needs to be moved, and when power failure and other special situations occur, the device cannot operate normally, the existing device generally does not choose to continuously maintain the running state in order to reduce the power consumption, but wakes up the device and starts transmission when the environmental temperature is higher than the temperature preset value or lower than the temperature preset value, this method can ignore some effective data.
[0003] In addition, the circuit structure setting of the existing temperature acquisition device generally adopts a wired mode to transmit data, which leads to the increase of the construction cost of the whole system, and the wired line is difficult to maintain, once the line has a problem, data cannot be transmitted.
[0004] Therefore, the present application is produced based on the improvement test of the existing device structure. SUMMARY
[0005] The utility model discloses a kind of ultra-low power consumption's high-precision wireless temperature acquisition device circuit, and the circuit structure selects high-precision temperature sensor and adopts wireless mode to transmit data, compared with existing circuit structure, can greatly reduce power consumption.
[0006] To achieve the above object, the technical scheme of the utility model is as follows: an ultra-low power consumption's high-precision wireless temperature acquisition device circuit, including power supply circuit, wireless communication circuit, sensor circuit and main controller circuit, sensor circuit and main controller circuit are connected, main controller circuit and wireless communication circuit are connected, power supply circuit connects main controller circuit, sensor circuit and wireless communication circuit to provide electric energy.
[0007] The power supply circuit includes battery, the positive pole of battery is connected to power supply +BAT, and the negative pole of battery is connected to ground through a fuse.
[0008] The main controller circuit includes single-chip microcomputer.
[0009] The sensor circuit includes temperature sensor chip.
[0010] The wireless communication circuit comprises a wireless communication module chip.
[0011] The single-chip microcomputer is connected with the power supply +BAT through the VLCD pin, the PB1 pin, the VDD1 pin, the VDD_2 pin, the VDD_3 pin, connected with the ground through the VSSA pin, the PA3 pin, the VSS_2 pin, the VSS_3 pin, connected to the power supply +BAT through the resistance of the NRST pin, connected to the ground through the resistance of the BOOT0 pin, connected to the crystal oscillator through the PH0-OSC_IN pin and the PH0-OSC_OUT pin, and connected to the ground through the capacitor; the temperature sensor chip is connected with the PB6 pin of the single-chip microcomputer U4 through the GND pin, connected with the PB5 pin of the single-chip microcomputer U4 through the DQ pin, and connected with the power supply +BAT through the VDD pin; the wireless communication module U2 is connected with the power supply +BAT through the VCC pin, connected with the PB1 pin of the single-chip microcomputer U4 through the GDO0 pin, connected with the PB12 pin of the single-chip microcomputer U4 through the CSN pin, connected with the PB13 pin of the single-chip microcomputer U4 through the SCK pin, connected with the PB14 pin of the single-chip microcomputer U4 through the MOSI pin, connected with the PB15 pin of the single-chip microcomputer U4 through the MISO / GDO1 pin, connected with the PA8 pin of the single-chip microcomputer U4 through the GDO2 pin, connected with the ground through the GND pin, and connected with the SIG pin of the antenna connecting seat through the ANT pin and the GND pin.
[0012] The temperature sensor chip U3 is connected with the single-chip microcomputer U4 through a serial interface, and sends the collected temperature data to the single-chip microcomputer in real time; the wireless communication module U2 is connected with the single-chip microcomputer U4 through an SPI bus.
[0013] The fuse adopts a fuse with the model number JK-SMD0603-100L.
[0014] The single-chip microcomputer adopts a chip with the model number STM32L151.
[0015] The crystal oscillator adopts a crystal oscillator with the model number X50328MSB2GI.
[0016] The temperature sensor chip adopts a chip with the model number M1820Z.
[0017] The antenna connecting seat adopts an antenna connecting seat with the model number U.FL-R-SMT-1(80).
[0018] The wireless communication module adopts a chip with the model number E07-M1101S.
[0019] By adopting the above technical solution, the beneficial effects of this utility model are: (1) Convenient transmission: The above circuit structure transmits temperature data to the external terminal through the wireless communication module, which has the advantages of low cost, stable performance, good scalability and easy maintenance. It can easily realize data transmission without laying complex wired connections. (2) Low power consumption: The above circuit structure uses an ultra-low power temperature sensor, a microcontroller and a wireless communication module. In the test, the maximum instantaneous power consumption of the entire device does not exceed 0.3 watts and the average power consumption does not exceed 0.1 watts. A 3300mAh battery can be used for more than 5 years. (3) High accuracy: The above circuit structure uses a high-precision temperature sensor. The maximum temperature measurement accuracy can reach ±0.1℃, which is far superior to most existing temperature acquisition devices. (4) Portability: The above circuit structure uses battery power supply. The battery can be replaced at any time, which provides convenience for the movement of the device. The device does not need to use an external power supply and can ensure normal operation of the device during power outages. (5) Stability: The software program of this device is highly efficient and does not have complex judgment logic. It only needs to read the data of the temperature sensor and send the read data to the outside through the wireless communication module to ensure the stability of the entire device operation. Attached Figure Description
[0020] Figure 1 This is a circuit diagram of an ultra-low power consumption, high-precision wireless temperature acquisition device.
[0021] In the picture:
[0022] 1. Power supply circuit; 2. Wireless communication circuit; 3. Sensor circuit; 4. Main controller circuit. Detailed Implementation
[0023] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.
[0024] This embodiment discloses an ultra-low power consumption, high-precision wireless temperature acquisition device circuit, such as... Figure 1 As shown, the circuit includes a power supply circuit 1, a wireless communication circuit 2, a sensor circuit 3, and a main controller circuit 4. The sensor circuit 3 and the main controller circuit 4 are connected, and the main controller circuit 4 and the wireless communication circuit 2 are connected. The power supply circuit 1 provides power to the main controller circuit, the sensor circuit, and the wireless communication circuit. The power consumption required by this structure is extremely low, significantly reducing power consumption compared to existing temperature acquisition devices. The maximum instantaneous power consumption during the circuit structure test did not exceed 0.3 watts, and the average power consumption did not exceed 0.1 watts. The circuit structure of each circuit is described in detail below with reference to the accompanying drawings.
[0025] The power supply circuit 1 is powered by battery BT1. Figure 1In the battery BT1 (3300 mAh capacity of the existing product during the implementation of the embodiment) of the positive electrode connected to the power supply + BAT, the negative electrode of the battery BT1 is connected to the ground GND through the fuse F1 (JK-SMD0603-100L type of the existing product during the implementation of the embodiment), and the power supply circuit 1 with a fuse F1 provides safety protection for the entire circuit.
[0026] The main controller circuit 4 includes a single-chip microcomputer U4 (STM32L151 type of the existing product during the implementation of the embodiment) as shown in the figure, the first pin (VLCD pin), the ninth pin (PB1 pin), the twenty-fourth pin (VDD1 pin), the thirty-sixth pin (VDD_2 pin), and the forty-eighth pin (VDD_3 pin) are connected to the power supply + BAT, the eighth pin (VSSA pin), the twenty-third pin (PA3 pin), the thirty-fifth pin (VSS_2 pin), and the forty-seventh pin (VSS_3 pin) are connected to the ground GND, the seventh pin (NRST pin) is connected to the power supply + BAT through the resistor R1 (10K resistor during the implementation of the embodiment), the forty-fourth pin (BOOT0 pin) is connected to the ground GND through the resistor R2 (10K resistor during the implementation of the embodiment), the fifth pin (PH0-OSC_IN pin) and the sixth pin (PH0-OSC_OUT pin) are connected to the crystal oscillator X1 (X50328MSB2GI type of the existing product during the implementation of the embodiment), and are connected to the ground GND through the capacitors C1 and C2 (33pF capacitors during the implementation of the embodiment).
[0027] The sensor circuit 3, as shown in the figure, includes a temperature sensor chip U3 (M1820Z type of the existing product during the implementation of the embodiment), which can collect real-time temperature data of the surrounding environment. The temperature sensor has very high precision, and the maximum temperature measurement precision can reach ±0.1℃. The chip used in this embodiment has a digital calibration compensation function, which transmits the high-precision temperature information after calibration and compensation to the main controller circuit 4 through the forty-first pin (PB5 pin) of the single-chip microcomputer U4 in real time. The first pin (GND pin) is connected to the forty-second pin (PB6 pin) of the single-chip microcomputer U4, the second pin (DQ pin) is connected to the forty-first pin (PB5 pin) of the single-chip microcomputer U4, and the third pin (VDD pin) is connected to the power supply + BAT. The temperature sensor chip U3 and the single-chip microcomputer U4 are connected through a serial interface, and the collected temperature data is sent to the single-chip microcomputer in real time.
[0028] The wireless communication circuit 2 comprises a wireless communication module U2 (an existing product of model E07-M1101S is used in the embodiment) as shown in the figure, which can transmit data to a terminal outside through a wireless connection mode, the wireless communication module U2 is connected with the single-chip microcomputer U4 through an SPI bus, and the single-chip microcomputer U4 transmits the collected temperature data to the terminal outside in real time through the wireless communication module U2. The first pin VCC pin of the wireless communication module U2 is connected with the power supply +BAT, the second pin (GDO0 pin) is connected with the 19th pin (PB1 pin) of the single-chip microcomputer U4, the third pin (CSN pin) is connected with the 25th pin (PB12 pin) of the single-chip microcomputer U4, the fourth pin (SCK pin) is connected with the 26th pin (PB13 pin) of the single-chip microcomputer U4, the fifth pin (MOSI pin) is connected with the 27th pin (PB14 pin) of the single-chip microcomputer U4, the sixth pin (MISO / GDO1 pin) is connected with the 28th pin (PB15 pin) of the single-chip microcomputer U4, the seventh pin (GDO2 pin) is connected with the 29th pin (PA8 pin) of the single-chip microcomputer U4, the eighth pin (GND pin) is connected with the ground GND, the ninth pin (ANT pin) is connected with the first pin (SIG pin) of the antenna connecting seat J1 (an existing product of model U.FL-R-SMT-1(80) is used in the embodiment), and the tenth pin (GND pin) is connected with the ground GND. The single-chip microcomputer U4 communicates with the wireless communication module U2 through the PA8, PB15, PB14, PB13, PB12 and PB1 pins connected with the wireless communication module U2, transmits the high-precision real-time temperature information to the wireless communication module U2, and sends the high-precision real-time temperature information to the outside through the antenna connecting seat J1 connected with the wireless communication module U2 in a wireless mode.
[0029] The temperature collecting device with the above circuit structure has the advantages of convenient wireless transmission, low production cost, stable performance, good expandability, convenient maintenance, low power consumption, high precision, portability and the like.
[0030] The above embodiment and figure are not limited to the product form and style of the utility model, and any appropriate change or modification made by any ordinary skilled person in the art shall be considered as not departing from the patent category of the utility model.
Claims
1. An ultra-low power high-precision wireless temperature acquisition device circuit, characterized in that, The application relates to a temperature sensor circuit, which comprises a power supply circuit, a wireless communication circuit, a sensor circuit and a main controller circuit, wherein the sensor circuit and the main controller circuit are connected, the main controller circuit and the wireless communication circuit are connected, and the power supply circuit is connected with the main controller circuit, the sensor circuit and the wireless communication circuit to provide power supply. The power supply circuit comprises a battery, the positive pole of the battery is connected to a power supply BAT, and the negative pole of the battery is connected to the ground through a fuse; the main controller circuit comprises a single-chip microcomputer; the sensor circuit comprises a temperature sensor chip; and the wireless communication circuit comprises a wireless communication module chip. The VLCD pin, the PB1 pin, the VDD1 pin, the VDD_2 pin, the VDD_3 pin of the single-chip microcomputer are connected with the power supply BAT, the VSSA pin, the PA3 pin, the VSS_2 pin, the VSS_3 pin are connected with the ground, the NRST pin is connected to the power supply BAT through a resistor, the BOOT0 pin is connected to the ground through a resistor, the PH0-OSC_IN pin and the PH0-OSC_OUT pin are connected to a crystal oscillator and are connected to the ground through a capacitor. The GND pin of the temperature sensor chip is connected with the PB6 pin of the single-chip microcomputer U4, the DQ pin is connected with the PB5 pin of the single-chip microcomputer U4, and the VDD pin is connected with the power supply BAT. The VCC pin of the wireless communication module U2 is connected with the power supply BAT, the GDO0 pin is connected with the PB1 pin of the single-chip microcomputer U4, the CSN pin is connected with the PB12 pin of the single-chip microcomputer U4, the SCK pin is connected with the PB13 pin of the single-chip microcomputer U4, the MOSI pin is connected with the PB14 pin of the single-chip microcomputer U4, the MISO / GDO1 pin is connected with the PB15 pin of the single-chip microcomputer U4, the GDO2 pin is connected with the PA8 pin of the single-chip microcomputer U4, the GND pin is connected with the ground, the ANT pin is connected with the SIG pin of an antenna connecting seat, and the GND pin is connected with the ground. The temperature sensor chip U3 is connected with the single-chip microcomputer U4 through a serial interface and sends the collected temperature data to the single-chip microcomputer in real time, and the wireless communication module U2 is connected with the single-chip microcomputer U4 through an SPI bus.
2. The ultra-low power high-precision wireless temperature acquisition device circuit of claim 1, wherein, The fuse adopts a fuse with a model number of JK-SMD0603-100L; the single-chip microcomputer adopts a chip with a model number of STM32L151; the crystal oscillator adopts a crystal oscillator with a model number of X50328MSB2GI; the temperature sensor chip adopts a chip with a model number of M1820Z; the antenna connecting seat adopts an antenna connecting seat with a model number of U.FL-R-SMT-1(80); and the wireless communication module adopts a chip with a model number of E07-M1101S.