Wireless temperature, humidity and oxygen content detection device and tobacco stack environment parameter detection system

Abstract

The utility model discloses a wireless temperature, humidity and oxygen content detection device and a tobacco stack environment parameter detection system. The device comprises a first processor, a temperature and humidity sensor, an oxygen sensor, a first signal processing circuit and a first wireless communication module. The temperature and humidity sensor is electrically connected with the first processor and used for collecting temperature data and humidity data around the tobacco stack; the first signal processing circuit comprises a voltage dividing module, an operational amplification module and an analog-to-digital conversion module, and the voltage dividing module is electrically connected between the oxygen sensor and the operational amplification module; the analog-to-digital conversion module is electrically connected between the operational amplification module and the first processor, and the analog-to-digital conversion module converts the amplified voltage signal into a digital signal; the first processor is used for reading the digital signal to obtain oxygen content data around the tobacco stack; and the first wireless communication module is electrically connected with the first processor and is used for wirelessly transmitting the temperature data, the humidity data and the oxygen content data to gateway equipment. The detection efficiency and accuracy can be improved.

Description

Technical Field

[0001] This application relates to the technical field of tobacco detection, and particularly to a wireless temperature and humidity and oxygen content detection device and a tobacco stack environment parameter detection system. Background Art

[0002] Tobacco usually needs to be stored in a warehouse for more than 3 years and undergo natural aging before it can be used for production. For large-volume tobacco stacks, the weight of tobacco in each stack position is mostly in the range of several tons to dozens of tons. During the storage of tobacco stacks, the storage environment changes unpredictably, and problems such as insect infestation and mildew often occur. Therefore, it is necessary to accurately detect parameters such as the temperature and humidity, oxygen concentration, core temperature, and / or tobacco moisture of the tobacco stacks.

[0003] However, at present, the detection methods for the environmental parameters of tobacco stacks are mostly manual detection, which is labor-intensive and cumbersome. Moreover, there are situations where data recording errors lead to chaos in guiding oxygen reduction and insecticidal work, resulting in waste of resources. Secondly, during the nitrogen filling and oxygen reduction process in a tobacco factory, personnel also need to enter the low-oxygen working area for recording, which poses a certain safety risk. In addition, the currently used temperature and humidity sensors and oxygen content sensors are mostly independent sensor products with low integration. Each sensor needs to be arranged separately, resulting in a large workload. Summary of the Utility Model

[0004] In view of this, the embodiments of this application provide a wireless temperature and humidity and oxygen content detection device and a tobacco stack environment parameter detection system to solve at least one of the above technical problems.

[0005] The embodiments of this application provide a wireless temperature and humidity and oxygen content detection device. The wireless temperature and humidity and oxygen content detection device is used to be arranged in an airtight tent where a tobacco stack is placed, and it includes a first processor, a temperature and humidity sensor, an oxygen sensor, a first signal processing circuit, and a first wireless communication module; the temperature and humidity sensor is electrically connected to the first processor and is used to collect the temperature data and humidity data around the tobacco stack and send the temperature data and humidity data to the first processor; the first signal processing circuit includes a voltage division module, at least one operational amplifier module, and an analog-to-digital conversion module. The voltage division module is electrically connected between the oxygen sensor and at least one operational amplifier module. The voltage division module is used to convert the current signal output by the oxygen sensor into a voltage signal. At least one operational amplifier module is used to amplify the voltage signal to obtain an amplified voltage signal; the analog-to-digital conversion module is electrically connected between at least one operational amplifier module and the first processor. The analog-to-digital conversion module is used to convert the amplified voltage signal into a digital signal and transmit the digital signal to the first processor; the first processor is used to read the digital signal to obtain the oxygen content data around the tobacco stack; the first wireless communication module is electrically connected to the first processor and is used to wirelessly transmit the temperature data, humidity data, and oxygen content data to a gateway device.

[0006] According to some embodiments of the present application, optionally, the wireless temperature and humidity and oxygen content detection device further includes: an eight-bit DIP switch, electrically connected to the first processor, the eight-bit DIP switch is provided with a plurality of switch buttons, and each switch button can be set to a conduction state or a cut-off state. Combinations of multiple switch buttons in different states are used to set the data upload time interval, communication address, communication channel, and / or communication mode of the wireless temperature and humidity and oxygen content detection device.

[0007] According to some embodiments of the present application, optionally, the eight-bit DIP switch includes a first eight-bit DIP switch and a second eight-bit DIP switch. The first eight-bit DIP switch is used to set the data upload time interval and communication channel, and the second eight-bit DIP switch is used to set the communication address and communication mode; the wireless temperature and humidity and oxygen content detection device and the gateway device adopt the same communication mode and the same communication channel.

[0008] According to some embodiments of the present application, optionally, the first processor is a low-power chip.

[0009] According to some embodiments of the present application, optionally, the wireless temperature and humidity and oxygen content detection device further includes: a first power source, the first power source includes a 3.6V dry battery; a first power source chip, electrically connected to the first power source, for converting the 3.6V electrical signal output by the first power source into an electrical signal with a target voltage value, and supplying power to the first processor, temperature and humidity sensor, oxygen sensor, and first wireless communication module through the electrical signal with the target voltage value.

[0010] According to some embodiments of the present application, optionally, the oxygen sensor is equipped with an oxygen detection probe.

[0011] According to some embodiments of the present application, optionally, the clock signal output terminal of the temperature and humidity sensor is electrically connected to the clock signal input terminal of the first processor, the data signal output terminal of the temperature and humidity sensor is electrically connected to the data signal input terminal of the first processor, and the temperature and humidity sensor communicates with the first processor through an integrated circuit bus.

[0012] According to some embodiments of the present application, optionally, the wireless temperature and humidity and oxygen content detection device is further provided with a first housing, and the first housing is provided with ventilation holes; the first processor, temperature and humidity sensor, oxygen sensor, first signal processing circuit, and first wireless communication module are all located in the accommodation space formed by the first housing.

[0013] According to some embodiments of the present application, optionally, the first wireless communication module includes a LoRa wireless communication module.

[0014] An embodiment of the present application provides a tobacco stack environmental parameter detection system. The tobacco stack environmental parameter detection system includes: a host computer; the wireless temperature, humidity and oxygen content detection device as described above; a gateway device, which is communicatively connected to the wireless temperature, humidity and oxygen content detection device and the host computer respectively, and the gateway device is used to forward the temperature data, humidity data and oxygen content data sent by the wireless temperature, humidity and oxygen content detection device to the host computer.

[0015] By using the wireless temperature, humidity and oxygen content detection device and the tobacco stack environmental parameter detection system provided by the embodiments of the present application, on the one hand, it can realize the automatic detection of the temperature, humidity and oxygen content around the tobacco stack, reduce the workload of the detection personnel, and improve the detection efficiency; on the other hand, the wireless temperature, humidity and oxygen content detection device can wirelessly transmit the temperature data, humidity data and oxygen content data around the tobacco stack to the gateway device, and then transmit them to the host computer through the gateway device, realizing the automatic upload and recording of data, reducing the data recording error rate, and improving the detection accuracy; on the other hand, during the nitrogen filling and oxygen reduction process, the automatic detection of the temperature, humidity and oxygen content around the tobacco stack can be realized without personnel entering the low-oxygen working area, which can improve the detection safety and reduce the detection risk; on the other hand, the wireless temperature, humidity and oxygen content detection device uses a wireless communication method, reducing a large amount of wiring and facilitating the layout; in addition, the wireless temperature, humidity and oxygen content detection device integrates a temperature and humidity sensor and an oxygen sensor, improving the integration degree of the detection device and further reducing the layout workload. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings in the embodiments of the present application.

[0017] Figure 1 It is a circuit schematic diagram of a wireless temperature, humidity and oxygen content detection device provided by an embodiment of the present application.

[0018] Figure 2 It is a circuit connection schematic diagram of a first signal processing circuit in the wireless temperature, humidity and oxygen content detection device provided by an embodiment of the present application.

[0019] Figure 3 It is a circuit connection schematic diagram of a temperature and humidity sensor in the wireless temperature, humidity and oxygen content detection device provided by an embodiment of the present application.

[0020] Figure 4 It is another circuit schematic diagram of the wireless temperature, humidity and oxygen content detection device provided by an embodiment of the present application.

[0021] Figure 5 It is a circuit schematic diagram of an eight-bit DIP switch in the wireless temperature, humidity and oxygen content detection device provided by an embodiment of the present application.

[0022] Figure 6 A circuit schematic diagram of the core temperature detection device provided by an embodiment of the present application.

[0023] Figure 7 A circuit connection schematic diagram of the core temperature sensor in the core temperature detection device provided by an embodiment of the present application.

[0024] Figure 8 Another circuit schematic diagram of the core temperature detection device provided by an embodiment of the present application.

[0025] Figure 9 A circuit schematic diagram of the moisture content detection device provided by an embodiment of the present application.

[0026] Figure 10 A circuit connection schematic diagram of the moisture content sensor and the wired communication module in the moisture content detection device provided by an embodiment of the present application.

[0027] Figure 11 A structural block diagram of the tobacco stack environment parameter detection system provided by an embodiment of the present application. Detailed implementation manners

[0028] The principles and spirit of the present application will be described below with reference to several exemplary embodiments. It should be understood that the purpose of providing these embodiments is to make the principles and spirit of the present application clearer and more thorough, so that those skilled in the art can better understand and then implement the principles and spirit of the present application. The exemplary embodiments provided herein are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments herein without creative efforts fall within the scope of protection of the present application.

[0029] It should be noted that in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. It should be understood that the term “and / or” used herein is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character “ / ” in this document generally represents an “or” relationship between the associated objects before and after.

[0030] In the embodiments of the present application, the term “electrically connected” can mean that two components are directly electrically connected, or that two components are electrically connected via one or more other components.

[0031] Without departing from the spirit or scope of the present application, various modifications and variations can be made in the present application, which will be obvious to those skilled in the art. Therefore, the present application is intended to cover the modifications and variations of the present application that fall within the scope of the corresponding claims (claimed technical solutions) and their equivalents. It should be noted that the implementation manners provided in the embodiments of the present application can be combined with each other without conflict.

[0032] Before elaborating on the technical solutions provided in the embodiments of the present application, for the convenience of understanding the embodiments of the present application, the present application first specifically describes the problems existing in the related technologies:

[0033] Tobacco usually needs to be stored in a warehouse for more than 3 years and undergo natural aging before it can be used for production. For large-volume tobacco stacks, the weight of the tobacco in each stack is mostly in the range of several tons to dozens of tons. During the storage process of the tobacco stack, the storage environment changes unpredictably, and problems such as insect infestation and mildew often occur. Therefore, it is necessary to accurately detect parameters such as the temperature and humidity, oxygen concentration, core temperature, and / or tobacco moisture of the tobacco stack.

[0034] However, at present, the detection methods for the environmental parameters of tobacco stacks are mostly manual detections, which are labor-intensive and cumbersome. Moreover, there are situations where data recording errors lead to confusion in guiding oxygen reduction and insecticidal work, resulting in waste of resources. Secondly, during the nitrogen filling and oxygen reduction process in a tobacco factory, personnel also need to enter the low-oxygen working area for recording, which poses a certain safety risk. In addition, the currently used temperature and humidity sensors and oxygen content sensors are mostly independent sensor products with low integration. Each sensor needs to be arranged separately, and the workload is relatively large.

[0035] In view of the above research findings of the inventors, the embodiments of the present application provide a wireless temperature and humidity and oxygen content detection device and a tobacco stack environmental parameter detection system, which can solve at least one of the above technical problems existing in the related technologies.

[0036] First, the wireless temperature and humidity and oxygen content detection device provided in the embodiments of the present application will be introduced below.

[0037] In some embodiments, the wireless temperature and humidity and oxygen content detection device can be arranged inside an airtight tent, and one or more tobacco stacks are placed inside the airtight tent. The wireless temperature and humidity and oxygen content detection device can be arranged close to the tobacco stack. For example, the wireless temperature and humidity and oxygen content detection device can be arranged on the tobacco stack, and one or more wireless temperature and humidity and oxygen content detection devices can be arranged on each tobacco stack.

[0038] Figure 1 A circuit schematic diagram of the wireless temperature and humidity and oxygen content detection device provided for the embodiments of the present application. As Figure 1As shown, the wireless temperature, humidity and oxygen content detection device 10 may include a first processor 110, a temperature and humidity sensor 120, an oxygen sensor 130, a first signal processing circuit 140, and a first wireless communication module 150. The temperature and humidity sensor 120 may be electrically connected to the first processor 110. The temperature and humidity sensor 120 may be configured to collect temperature data and humidity data around the tobacco stack, and send the temperature data and humidity data around the tobacco stack to the first processor 110. Specifically, the temperature and humidity sensor 120 may be configured to generate and transmit the temperature data and humidity data around the tobacco stack to the first processor 110 in response to the temperature and humidity around the tobacco stack. The temperature data collected by the temperature and humidity sensor 120 reflects the temperature around the tobacco stack, and the humidity data collected by the temperature and humidity sensor 120 reflects the humidity around the tobacco stack.

[0039] The oxygen sensor 130 may be configured to detect the oxygen content, i.e., the oxygen concentration, around the tobacco stack. Specifically, the oxygen sensor 130 may output a current signal in response to the oxygen content around the tobacco stack. Generally, the current value of the current signal output by the oxygen sensor 130 is relatively small, such as a microampere-level current signal. To improve the accuracy of oxygen content detection, the wireless temperature, humidity and oxygen content detection device 10 is provided with a first signal processing circuit 140.

[0040] As Figure 1 shown, the first signal processing circuit 140 is electrically connected between the oxygen sensor 130 and the first processor 110. The first signal processing circuit 140 may be configured to receive the current signal output by the oxygen sensor 130 and convert the current signal into a voltage signal. After converting the current signal into a voltage signal, the first signal processing circuit 140 may also be configured to amplify the voltage signal and perform analog-to-digital conversion on the amplified voltage signal, i.e., convert the amplified voltage signal into a digital signal. Then, the first signal processing circuit 140 transmits the digital signal to the first processor 110. The first processor 110 may be configured to read the digital signal output by the first signal processing circuit 140, such as reading a discrete numerical combination composed of 0s and 1s, so as to obtain the oxygen content data around the tobacco stack.

[0041] The first wireless communication module 150 can be electrically connected to the first processor 110. The first wireless communication module 150 can communicate with the first processor 110. The first wireless communication module 150 can be used to receive the temperature data, humidity data, and oxygen content data around the tobacco stack sent by the first processor 110, and wirelessly transmit the temperature data, humidity data, and oxygen content data around the tobacco stack to the gateway device, and transmit the temperature data, humidity data, and oxygen content data around the tobacco stack to the host computer through the gateway device, so as to realize the automatic detection of the temperature, humidity, and oxygen content around the tobacco stack.

[0042] On the one hand, the wireless temperature, humidity, and oxygen content detection device provided by the embodiments of the present application can realize the automatic detection of the temperature, humidity, and oxygen content around the tobacco stack, reduce the workload of the detection personnel, and improve the detection efficiency. On the other hand, the wireless temperature, humidity, and oxygen content detection device can wirelessly transmit the temperature data, humidity data, and oxygen content data around the tobacco stack to the gateway device, and then transmit them to the host computer through the gateway device, realizing the automatic upload and recording of data, reducing the data recording error rate, and improving the detection accuracy. On the other hand, during the nitrogen filling and oxygen reduction process, the automatic detection of the temperature, humidity, and oxygen content around the tobacco stack can be realized without personnel entering the low-oxygen working area, which can improve the detection safety and reduce the detection risk. On the other hand, the wireless temperature, humidity, and oxygen content detection device adopts a wireless communication method, reducing a large amount of wiring and facilitating layout. In addition, the wireless temperature, humidity, and oxygen content detection device integrates a temperature and humidity sensor and an oxygen sensor, improving the integration degree of the detection device and further reducing the layout workload.

[0043] Generally speaking, the environmental parameters of the tobacco stack need to be detected for a long time. However, the inventors of the present application have found that the battery life of the currently used detection products is mostly within 3 months, which cannot meet the actual use requirements of the tobacco industry. Moreover, once the airtight tent is filled with nitrogen and the oxygen is reduced, it is generally prohibited to open it, so the battery or the detection product cannot be replaced in time, resulting in a detection blank period.

[0044] In view of this, according to some embodiments of the present application, optionally, the first processor 110 can be a low-power chip. For example, the first processor 110 can be selected as a low-power chip with an output current less than a preset threshold in the low-power mode. In this way, the battery life of the wireless temperature, humidity, and oxygen content detection device can be improved to meet the actual use requirements of the detection of the environmental parameters of the tobacco stack.

[0045] In some specific embodiments, optionally, the first processor 110 may adopt the ultra-low-power STM32L0 series chips, that is, the STM32L0 series single-chip microcomputers. The STM32L0 series chips integrate a high-performance Arm Cortex-M0+ 32-bit RISC core with a working frequency of 32 MHz, which can increase the battery life of the product while meeting the processing speed.

[0046] The first processor 110 has multiple pins. For example, the debug pin of the first processor 110 can be connected to the debug module, and the debug module can be used to debug the first processor 110. In addition, the first processor 110 can also be connected to the first reset module, and the first reset module can be used to reset the first processor 110.

[0047] Figure 2 FIG. is a schematic circuit connection diagram of the first signal processing circuit in the wireless temperature, humidity and oxygen content detection device provided by the embodiment of the present application. As Figure 2 shown, according to some embodiments of the present application, optionally, the first signal processing circuit 140 may include a voltage division module 141, at least one operational amplifier module 142, and an analog-to-digital conversion module 143. Figure 2 Taking the first signal processing circuit 140 including two operational amplifier modules 142, that is, the first operational amplifier module 1421 and the second operational amplifier module 1422 as an example for illustration.

[0048] As Figure 2 shown, the voltage division module 141 is electrically connected between the oxygen sensor 130 and at least one operational amplifier module 142. The voltage division module 141 can be used to convert the current signal into a voltage signal. The first end of the voltage division module 141 is electrically connected to the output end of the oxygen sensor 130, and the second end of the voltage division module 141 is grounded. After the current signal flows through the voltage division module 141, the voltage division module generates a voltage, thereby converting the current signal into a voltage signal. The voltage division module 14 can be a voltage division resistor. The resistance value of the voltage division resistor can be flexibly adjusted according to the actual situation, and the present application does not limit this.

[0049] After the voltage division module 141 converts the current signal into a voltage signal, the voltage value of the voltage signal is also small, such as only in the millivolt level. At least one operational amplifier module 142 can be electrically connected to the voltage division module 141, and at least one operational amplifier module 142 can be used to amplify the voltage signal to obtain an amplified voltage signal. As Figure 2As shown, after the first operational amplifier module 1421 and the second operational amplifier module 1422 amplify the voltage signal, a voltage signal with a relatively large voltage value can be obtained, such as a voltage signal of 0.4V - 2V. The amplification factors of the first operational amplifier module 1421 and the second operational amplifier module 1422 can be flexibly adjusted according to the actual situation, and the present application does not limit this.

[0050] Each operational amplifier module 142 may include an operational amplifier and an adjustment resistor. The adjustment resistor is electrically connected to the operational amplifier, and the amplification factor of the operational amplifier module 142 can be adjusted by adjusting the resistance value of the adjustment resistor.

[0051] As Figure 2 shown, the analog-to-digital conversion module 143 is electrically connected between at least one operational amplifier module 142 and the first processor 110. The analog-to-digital conversion module 143 can be used to convert the amplified voltage signal into a digital signal and transmit the digital signal to the first processor 110. In some examples, the analog-to-digital conversion module 143 may be an analog-to-digital (AD) chip. The clock pin, enable pin, and data output pin of the AD chip can be electrically connected to different I / O pins of the first processor 110 respectively. The AD chip can be used to perform analog-to-digital conversion on the amplified voltage signal output by the operational amplifier module 142, convert the amplified voltage signal into a digital signal, and transmit the digital signal to the first processor 110. The first processor 110 can be used to read the digital signal output by the AD chip, so as to obtain the oxygen content data around the tobacco stack.

[0052] Considering the objective condition of a complex detection environment during the oxygen detection process of the tobacco stack, in some embodiments, the oxygen sensor 130 may carry an oxygen detection probe. For example, in some examples, the oxygen sensor 130 may be an oxygen sensor of model O2-C2.

[0053] In this way, because the oxygen detection probe has strong anti-interference ability, it can accurately measure the oxygen content around the tobacco stack, and has a long calibration period, which can reduce the calibration cost.

[0054] Figure 3 This is a schematic circuit connection diagram of the temperature and humidity sensor in the wireless temperature, humidity and oxygen content detection device provided by the embodiments of the present application. As Figure 3As shown, in some embodiments, optionally, the temperature and humidity sensor 120 may adopt a high-precision GXHT30C temperature and humidity module. The temperature and humidity sensor 120 may be powered by a 3.3V power supply and perform data transmission with the first processor 110 through the Inter-Integrated Circuit (I2C) communication method. I2C communication only requires two signal lines, one data line (SDA) and one clock line (SCL). This simplified cable requirement reduces complexity.

[0055] Combined with Figure 1 and Figure 3 As shown, in some embodiments, the temperature and humidity sensor 120 is provided with a clock signal output terminal THSCL and a data signal output terminal THSDA. The clock signal output terminal THSCL of the temperature and humidity sensor 120 is electrically connected to the clock signal input terminal of the first processor 110, and the data signal output terminal THSDA of the temperature and humidity sensor 120 is electrically connected to the data signal input terminal of the first processor 110. The temperature and humidity sensor 120 communicates with the first processor 110 through I2C communication, and the temperature and humidity sensor 120 can transmit the collected temperature data and humidity data around the tobacco stack to the first processor 110.

[0056] As Figure 3 shown, the clock signal output terminal THSCL of the temperature and humidity sensor 120 may be connected with a first pull-up resistor R38, and the data signal output terminal THSDA of the temperature and humidity sensor 120 may be connected with a second pull-up resistor R39.

[0057] In some embodiments, optionally, the first wireless communication module 150 may include a LoRa wireless communication module, which can achieve long-distance wireless data transmission. LoRa (Long Range) wireless communication, for example, can achieve wireless communication over several kilometers, and the LoRa wireless communication module can be powered by a battery and can work in a low-power mode, thereby further extending the service life and battery life of the wireless temperature and humidity and oxygen content detection device and meeting the actual use requirements of tobacco stack environment parameter detection. In addition, LoRa wireless communication enhances the anti-interference ability through technologies such as spread-spectrum modulation and frequency hopping and is suitable for working in complex channel environments.

[0058] The first wireless communication module 150 may communicate with the first processor 110 through the Serial Peripheral Interface (SPI) communication method.

[0059] SPI communication can use the following four main pins:

[0060] MOSI (Master Out Slave In): The master device sends data to the slave device.

[0061] MISO (Master In Slave Out): The slave device sends data to the master device.

[0062] SCK (Serial Clock): The clock signal generated by the master device for synchronizing data transmission.

[0063] SS (NSS, CS): The master device selects the slave device and specifies to communicate with a certain slave device.

[0064] The transmission rate of SPI communication is usually high, suitable for fast transmission of large amounts of data. Moreover, the required pins are simple, usually only 4 main signal lines, which is convenient for hardware connection.

[0065] The first wireless communication module 150 may also be provided with a reset pin, and the reset pin may be electrically connected to the first processor 110.

[0066] The inventors of the present application further studied and found that current temperature and humidity sensors and oxygen sensors are mostly powered by lithium batteries. However, tobacco is a flammable substance, so when using a lithium battery for power supply, there are risks of battery spontaneous combustion and tobacco burning. In view of this, in some embodiments of the present application, the first processor 110 uses a low-power chip, such as the STM32L0 series chip, and uses a 3.6V dry battery to power the wireless temperature and humidity and oxygen content detection device, thereby reducing the risks of battery spontaneous combustion and tobacco burning.

[0067] Figure 4 Another circuit schematic diagram of the wireless temperature and humidity and oxygen content detection device provided by the embodiments of the present application. As Figure 4 shown, in some specific embodiments, optionally, the wireless temperature and humidity and oxygen content detection device 10 may further include a first power source 160 and a first power source chip 170. The first power source 160 may be a 3.6V dry battery.

[0068] The first power chip 170 can be electrically connected to the first power supply 160. Specifically, the input terminal of the first power chip 170 can be electrically connected to the first power supply 160, and the output terminal of the first power chip 170 can be electrically connected to the first processor 110, the temperature and humidity sensor 120, the oxygen sensor 130, and the first wireless communication module 150. The first power chip 170 can be used to convert the 3.6V electrical signal output by the first power supply into an electrical signal with a target voltage value, and supply power to the first processor 110, the temperature and humidity sensor 120, the oxygen sensor 130, and the first wireless communication module 150 through the electrical signal with the target voltage value. The target voltage value can be flexibly adjusted according to the actual situation, and this application does not limit this. For example, in some examples, the target voltage value can be 3.3V.

[0069] In this way, the embodiment of this application uses a 3.6V dry battery to supply power to the wireless temperature and humidity and oxygen content detection device, which can reduce the risks of battery spontaneous combustion and tobacco combustion.

[0070] According to some embodiments of this application, optionally, the wireless temperature and humidity and oxygen content detection device 10 can also be provided with a first housing (not shown in the figure), and the first housing is provided with ventilation holes. The material of the first housing and the number of ventilation holes can be flexibly adjusted according to the actual situation, and this application does not limit this. The first processor 110, the temperature and humidity sensor 120, the oxygen sensor 130, the first signal processing circuit 140, and the first wireless communication module 150 can all be located in the accommodation space formed by the first housing.

[0071] In this way, devices such as the temperature and humidity sensor and the oxygen sensor are integrated in the first housing, which can facilitate portability and arrangement and reduce the workload of arrangement. In addition, the first housing is provided with ventilation holes, and through the ventilation holes, the gas inside and outside the first housing can circulate, which is convenient for the temperature and humidity sensor and the oxygen sensor to detect the temperature data, humidity data, and oxygen content data around the tobacco stack.

[0072] According to some embodiments of this application, optionally, one or more tobacco stacks can be placed in each airtight tent, and at least one wireless temperature and humidity and oxygen content detection device 10 can be arranged for each tobacco stack. Each wireless temperature and humidity and oxygen content detection device 10 can be used to detect the temperature data, humidity data, and oxygen content data around the corresponding tobacco stack, thereby improving the accuracy of detecting the environmental parameters of each tobacco stack.

[0073] Figure 5 It is a circuit schematic diagram of an eight-bit DIP switch in the wireless temperature and humidity and oxygen content detection device provided by the embodiment of this application. As Figure 5 shown, in order to distinguish the data uploaded by different wireless temperature and humidity and oxygen content detection devices, in some embodiments, the wireless temperature and humidity and oxygen content detection device can further include an eight-bit DIP switch 180. CombiningFigure 1 and Figure 5 As shown in Figure 5 , the eight-bit DIP switch 180 can be electrically connected to the first processor 110. The eight-bit DIP switch 180 is provided with a plurality of switch buttons 180a, such as 8 switch buttons 180a, and each switch button 180a can be set to a conducting state or a non-conducting state. Combinations of multiple switch buttons 180a in different states are used to set the data upload time interval, communication address, communication channel, and / or communication mode of the wireless temperature, humidity, and oxygen content detection device.

[0074] Each switch button 180a can be set to "ON" or "OFF". Combinations of multiple switch buttons 180a can represent a specific binary number. For example, a combination of 2 switch buttons 180a can represent binary numbers from 00 to 11, a combination of 3 switch buttons 180a can represent binary numbers from 000 to 111, and a combination of 8 switch buttons 180a can represent binary numbers from 00000000 to 11111111.

[0075] The data upload time interval is the time interval between two adjacent data uploads of the wireless temperature, humidity, and oxygen content detection device. The uploaded data can include temperature data, humidity data, and oxygen content data around the tobacco stack. The data upload time interval can be flexibly adjusted according to actual situations, such as 4 hours, 10 hours, or other time intervals, which are not limited in this application. The communication address, communication channel, and / or communication mode are used to distinguish the data uploaded by different wireless temperature, humidity, and oxygen content detection devices.

[0076] such as Figure 5As shown, in some specific embodiments, optionally, the eight-bit DIP switch 180 may include a first eight-bit DIP switch 181 and a second eight-bit DIP switch 182. The first eight-bit DIP switch 181 may be used to set the data upload time interval and communication channel of the wireless temperature, humidity and oxygen content detection device. For example, the combination of the first 4 switch buttons 180a in the first eight-bit DIP switch 181 is used to set the data upload time interval of the wireless temperature, humidity and oxygen content detection device, that is, the binary numbers range from 0000 to 1111. The combination of the last 4 switch buttons 180a in the first eight-bit DIP switch 181 is used to set the communication channel of the wireless temperature, humidity and oxygen content detection device, that is, the binary numbers range from 0000 to 1111. The second eight-bit DIP switch 182 may be used to set the communication address and communication mode of the wireless temperature, humidity and oxygen content detection device. For example, the combination of the first 6 switch buttons 180a in the second eight-bit DIP switch 182 is used to set the communication address of the wireless temperature, humidity and oxygen content detection device, that is, the binary numbers range from 000000 to 111111. The combination of the last 2 switch buttons 180a in the second eight-bit DIP switch 182 is used to set the communication mode of the wireless temperature, humidity and oxygen content detection device, that is, the binary numbers range from 00 to 11.

[0077] When the first wireless communication module 150 wirelessly transmits the temperature data around the tobacco stack, the humidity data around the tobacco stack and the oxygen content data around the tobacco stack to the gateway device, it can send the binary numbers representing the communication address, communication channel and / or communication mode of the wireless temperature, humidity and oxygen content detection device to the gateway device, so as to facilitate the gateway device and / or the upper computer to distinguish the data uploaded by different wireless temperature, humidity and oxygen content detection devices.

[0078] When detecting the environmental parameters of the tobacco stack, multiple gateway devices and multiple wireless temperature, humidity and oxygen content detection devices 10 can be set, so as to detect the temperature data, humidity data and oxygen content data around multiple tobacco stacks. Each gateway device may be associated with at least one wireless temperature, humidity and oxygen content detection device 10, that is, receive the data uploaded by at least one wireless temperature, humidity and oxygen content detection device 10. All the wireless temperature, humidity and oxygen content detection devices 10 associated with the same gateway device may adopt the same communication mode and the same communication channel, and different wireless temperature, humidity and oxygen content detection devices 10 associated with the same gateway device may adopt different communication addresses. That is, different communication modes and / or different communication channels can be used to distinguish different gateway devices, and different communication addresses can be used to distinguish different wireless temperature, humidity and oxygen content detection devices 10 associated with the same gateway device.

[0079] Thus, by setting the data upload time interval, communication address, communication channel, and / or communication mode of the wireless temperature and humidity and oxygen content detection device through an eight-bit DIP switch, it is possible to automatically upload and record the environmental parameters of multiple tobacco stacks, distinguish the data uploaded by different wireless temperature and humidity and oxygen content detection devices, reduce the error rate of data recording, and improve the detection accuracy.

[0080] Based on the same or similar technical concept as the wireless temperature and humidity and oxygen content detection device provided in the above embodiment, the embodiment of the present application also provides a core temperature detection device, which can be arranged inside the tobacco stack, such as the central position of the tobacco stack, and can be used to detect the core temperature data inside the tobacco stack.

[0081] Figure 6 It is a circuit schematic diagram of the core temperature detection device provided in the embodiment of the present application. As Figure 6 shown, the core temperature detection device 20 may include a second housing 210, a core temperature sensor 220, a second processor 230, and a second wireless communication module 240. The core temperature sensor 220, the second processor 230, and the second wireless communication module 240 may be located in the accommodation space formed by the second housing 210.

[0082] The core temperature sensor 220 may be electrically connected to the second processor 230, and the core temperature sensor 220 may be used to collect the core temperature data inside the tobacco stack and send the core temperature data to the second processor 230.

[0083] The second wireless communication module 240 may be electrically connected to the second processor 230, and the second wireless communication module 240 may be used to wirelessly transmit the core temperature data forwarded by the second processor 230 to the gateway device and transmit the core temperature data to the upper computer through the gateway device.

[0084] For the core temperature detection device provided in the embodiment of the present application, on the one hand, it can realize the automatic detection of the core temperature inside the tobacco stack, reduce the workload of the detection personnel, and improve the detection efficiency; on the other hand, the core temperature detection device can wirelessly transmit the core temperature data inside the tobacco stack to the gateway device, and then transmit it to the upper computer through the gateway device to realize the automatic upload and record of the data, reduce the error rate of data recording, and improve the detection accuracy; on the other hand, during the nitrogen filling and oxygen reduction process, it is possible to realize the automatic detection of the core temperature inside the tobacco stack without personnel entering the low-oxygen working area, which can improve the detection safety and reduce the detection risk; on the other hand, the core temperature detection device uses a wireless communication method, reducing a large amount of wiring and facilitating the layout.

[0085] According to some embodiments of the present application, optionally, the second processor 230 may be a low-power chip. For example, the second processor 230 may be selected as a low-power chip with an output current less than a preset threshold in the low-power mode.

[0086] In this way, the battery life of the core temperature detection device can be improved to meet the actual usage requirements of tobacco stack environmental parameter detection.

[0087] In some specific embodiments, optionally, similar to the first processor, the second processor 230 may adopt the ultra-low-power STM32L0 series chips, that is, the STM32L0 series single-chip microcomputers. The STM32L0 series chips integrate a high-performance Arm Cortex-M0+ 32-bit RISC core with a working frequency of 32 MHz, which can increase the battery life of the product while meeting the processing speed.

[0088] The second processor 230 has multiple pins. For example, the debug pins of the second processor 230 can be connected to a debug module, and the debug module can be used to debug the second processor 230. In addition, the second processor 230 can also be connected to a second reset module, and the second reset module can be used to reset the second processor 230.

[0089] Figure 7 It is a schematic circuit connection diagram of the core temperature sensor in the core temperature detection device provided by the embodiments of the present application. As Figure 7 shown, in some embodiments, optionally, the core temperature sensor 220 may adopt a high-precision HT30 type temperature sensor. The core temperature sensor 220 can be powered by a 3.3V power supply and transmit data to the second processor 230 through the Inter-Integrated Circuit (I2C) communication method. I2C communication only requires two signal lines, a data line (SDA) and a clock line (SCL). This simplified cable requirement reduces complexity.

[0090] Combined with Figure 6 and Figure 7 shown, in some embodiments, the core temperature sensor 220 is provided with a clock signal output terminal THSCL and a data signal output terminal THSDA. The clock signal output terminal THSCL of the core temperature sensor 220 is electrically connected to the clock signal input terminal of the second processor 230, and the data signal output terminal THSDA of the core temperature sensor 220 is electrically connected to the data signal input terminal of the second processor 230. The core temperature sensor 220 communicates with the second processor 230 through I2C, and the core temperature sensor 220 can transmit the collected core temperature data inside the tobacco stack to the second processor 230.

[0091] AsFigure 7 As shown, the clock signal output terminal THSCL of the core temperature sensor 220 may be connected to a first pull-up resistor R48, and the data signal output terminal THSDA of the core temperature sensor 220 may be connected to a second pull-up resistor R49.

[0092] In some embodiments, optionally, the second wireless communication module 240 may include a LoRa wireless communication module, which can achieve long-distance wireless data transmission. LoRa (Long Range) wireless communication, for example, can achieve wireless communication over several kilometers, and the LoRa wireless communication module can be powered by a battery and can operate in a low-power mode, thereby further extending the service life and battery life of the core temperature detection device and meeting the actual use requirements for detecting the environmental parameters of tobacco stacks. In addition, LoRa wireless communication enhances the anti-interference ability through technologies such as spread-spectrum modulation and frequency hopping and is suitable for working in complex channel environments.

[0093] The second wireless communication module 240 can communicate with the second processor 230 through a Serial Peripheral Interface (SPI) communication method.

[0094] The transmission rate of SPI communication is usually high and is suitable for the rapid transmission of large amounts of data. Moreover, the required pins are simple, usually only 4 main signal lines are needed, which is convenient for hardware connection.

[0095] The second wireless communication module 240 may also be provided with a reset pin, and the reset pin may be electrically connected to the second processor 230.

[0096] The inventors of the present application further found through research that current core temperature sensors are mostly powered by lithium batteries. However, tobacco is a flammable substance, so when powered by a lithium battery, there are risks of battery spontaneous combustion and tobacco combustion. In view of this, in some embodiments of the present application, the second processor 230 uses a low-power chip, such as the STM32L0 series chip, and a 3.6V dry battery is used to power the core temperature detection device, thereby reducing the risks of battery spontaneous combustion and tobacco combustion.

[0097] Figure 8 Another circuit schematic diagram of the core temperature detection device provided by the embodiments of the present application. As Figure 8 shown, in some specific embodiments, optionally, the core temperature detection device 20 may further include a second power supply 250 and a second power supply chip 260. The second power supply 250 may be a 3.6V dry battery.

[0098] The second power supply chip 260 can be electrically connected to the second power supply 250. Specifically, the input terminal of the second power supply chip 260 can be electrically connected to the second power supply 250, and the output terminal of the second power supply chip 260 can be electrically connected to the core temperature sensor 220, the second processor 230, and the second wireless communication module 240. The second power supply chip 260 can be used to convert the 3.6V electrical signal output by the second power supply 250 into an electrical signal with a target voltage value, and supply power to the core temperature sensor 220, the second processor 230, and the second wireless communication module 240 through the electrical signal with the target voltage value. The target voltage value can be flexibly adjusted according to the actual situation, and the present application does not limit this. For example, in some examples, the target voltage value can be 3.3V.

[0099] In this way, the embodiment of the present application uses a 3.6V dry battery to supply power to the core temperature detection device, which can reduce the risks of battery spontaneous combustion and tobacco combustion.

[0100] According to some embodiments of the present application, optionally, the second housing 210 is provided with a ventilation hole (not shown in the figure). The material of the second housing and the number of ventilation holes can be flexibly adjusted according to the actual situation, and the present application does not limit this.

[0101] In this way, devices such as the core temperature sensor are integrated in the second housing, which can facilitate portability and arrangement and reduce the arrangement workload. In addition, the second housing is provided with a ventilation hole, and through the ventilation hole, the gas inside and outside the second housing can circulate, which is convenient for the core temperature sensor to detect the core temperature data inside the tobacco stack.

[0102] According to some embodiments of the present application, optionally, one or more tobacco stacks can be placed in each airtight tent, and at least one core temperature detection device 20 can be arranged on each tobacco stack. Each core temperature detection device 20 can be used to detect the core temperature data inside the corresponding tobacco stack, thereby improving the accuracy of detecting the environmental parameters of each tobacco stack.

[0103] In order to distinguish the data uploaded by different core temperature detection devices, in some embodiments, the core temperature detection device 20 may further include an eight-bit DIP switch. The eight-bit DIP switch in the core temperature detection device has the same structure as the eight-bit DIP switch 180 shown in Figure 5 For the specific structure, please refer to Figure 5 , and it will not be shown separately here. The eight-bit DIP switch can be electrically connected to the second processor 230. The eight-bit DIP switch is provided with a plurality of switch buttons, such as 8 switch buttons, and each switch button can be set to a conducting state or a non-conducting state. The combination of multiple switch buttons in different states is used to set the data upload time interval, communication address, communication channel, and / or communication mode of the core temperature detection device.

[0104] Each switch button can be set to "ON" or "OFF". Combinations of multiple switch buttons can represent a specific binary number. For example, the combination of 2 switch buttons can represent binary numbers from 00 to 11, the combination of 3 switch buttons can represent binary numbers from 000 to 111, and the combination of 8 switch buttons can represent binary numbers from 00000000 to 11111111.

[0105] The data upload time interval is the time interval between two adjacent data uploads of the core temperature detection device. The uploaded data can include the core temperature data inside the tobacco stack. The data upload time interval can be flexibly adjusted according to the actual situation, such as 4 hours, 10 hours, or other time intervals, which are not limited in this application. The communication address, communication channel, and / or communication mode are used to distinguish the data uploaded by different core temperature detection devices.

[0106] In some specific embodiments, optionally, the eight-bit DIP switch can include a third eight-bit DIP switch and a fourth eight-bit DIP switch. The structure of the third eight-bit DIP switch is the same as Figure 5 the structure of the first eight-bit DIP switch 181 shown, and the structure of the fourth eight-bit DIP switch is the same as Figure 5 the structure of the second eight-bit DIP switch 182 shown. For the specific structure, please refer to Figure 5 and will not be shown separately here.

[0107] The third eight-bit DIP switch can be used to set the data upload time interval and communication channel of the core temperature detection device. For example, the combination of the first 4 switch buttons in the third eight-bit DIP switch is used to set the data upload time interval of the core temperature detection device, that is, binary numbers from 0000 to 1111. The combination of the last 4 switch buttons in the third eight-bit DIP switch is used to set the communication channel of the core temperature detection device, that is, binary numbers from 0000 to 1111. The fourth eight-bit DIP switch can be used to set the communication address and communication mode of the core temperature detection device. For example, the combination of the first 6 switch buttons in the fourth eight-bit DIP switch is used to set the communication address of the core temperature detection device, that is, binary numbers from 000000 to 111111. The combination of the last 2 switch buttons in the fourth eight-bit DIP switch is used to set the communication mode of the core temperature detection device, that is, binary numbers from 00 to 11.

[0108] When the second wireless communication module 240 wirelessly transmits the core temperature data to the gateway device, it can send the binary number representing the communication address, communication channel, and / or communication mode of the core temperature detection device to the gateway device, so as to facilitate the gateway device and / or the upper computer to distinguish the data uploaded by different core temperature detection devices.

[0109] When detecting the environmental parameters of tobacco stacks, multiple gateway devices and multiple core temperature detection devices 20 can be set up to detect the core temperature data inside multiple tobacco stacks. Each gateway device can be associated with at least one core temperature detection device 20, that is, receive data uploaded by at least one core temperature detection device 20. All the core temperature detection devices 20 associated with the same gateway device can adopt the same communication mode and the same communication channel, and different core temperature detection devices 20 associated with the same gateway device can adopt different communication addresses. That is, different communication modes and / or different communication channels can be used to distinguish different gateway devices, and different communication addresses can be used to distinguish different core temperature detection devices 20 associated with the same gateway device.

[0110] In this way, by setting the data upload time interval, communication address, communication channel, and / or communication mode of the core temperature detection device through an eight-bit DIP switch, while realizing the automatic upload and recording of the environmental parameters of multiple tobacco stacks, the data uploaded by different core temperature detection devices can be distinguished, reducing the error rate of data recording and improving the detection accuracy.

[0111] Based on the same or similar technical concept as the wireless temperature, humidity and oxygen content detection device and the core temperature detection device provided in the above embodiments, the embodiment of the present application also provides a moisture content detection device, which can be arranged inside the tobacco stack, such as the central position of the tobacco stack, and the moisture content detection device can be used to detect the moisture content data inside the tobacco stack.

[0112] Figure 9 It is a circuit schematic diagram of the moisture content detection device provided in the embodiment of the present application. As Figure 9 shown, the moisture content detection device 30 can include a third housing 310, a moisture content sensor 320, a wired communication module 330, a third processor 340, and a third wireless communication module 350. The moisture content sensor 320, the wired communication module 330, the third processor 340, and the third wireless communication module 350 are located in the accommodation space formed by the third housing 310.

[0113] The moisture content sensor 320 can be used to collect the moisture content data inside the tobacco stack.

[0114] The wired communication module 330 is electrically connected between the moisture content sensor 320 and the third processor 340, and the wired communication module 330 can be used to send the moisture content data inside the tobacco stack collected by the moisture content sensor 320 to the third processor 340.

[0115] The third wireless communication module 350 can be electrically connected to the third processor 340. The third wireless communication module 350 can be used to wirelessly transmit the moisture content data inside the tobacco stack forwarded by the third processor 340 to the gateway device, and transmit the moisture content data to the host computer through the gateway device.

[0116] For the moisture content detection device provided by the embodiments of the present application, on the one hand, it can realize the automatic detection of the moisture content inside the tobacco stack, reduce the workload of the detection personnel, and improve the detection efficiency; on the other hand, the moisture content detection device can wirelessly transmit the moisture content data inside the tobacco stack to the gateway device, and then transmit it to the host computer through the gateway device, realizing the automatic upload and recording of data, reducing the data recording error rate, and improving the detection accuracy; on the other hand, during the nitrogen filling and oxygen reduction process, the automatic detection of the moisture content inside the tobacco stack can be realized without personnel entering the low-oxygen working area, which can improve the detection safety and reduce the detection risk; on the other hand, the moisture content detection device uses a wireless communication method, reducing a large amount of wiring and facilitating the layout.

[0117] According to some embodiments of the present application, optionally, the third processor 340 can be a low-power chip. For example, the third processor 340 can select a low-power chip with an output current less than a preset threshold in the low-power mode.

[0118] In this way, the battery life of the moisture content detection device can be improved to meet the actual use requirements of the tobacco stack environment parameter detection.

[0119] In some specific embodiments, optionally, similar to the first processor and the second processor, the third processor 340 can adopt the ultra-low-power STM32L0 series chips, that is, the STM32L0 series single-chip microcomputers. The STM32L0 series chips integrate a high-performance Arm Cortex-M0+ 32-bit RISC core with a working frequency of 32 MHz, which can increase the battery life of the product while meeting the processing speed.

[0120] The third processor 340 has multiple pins. For example, the debug pin of the third processor 340 can be connected to the debug module, and the debug module can be used to debug the third processor 340. In addition, the third processor 340 can also be connected to the third reset module, and the third reset module can be used to reset the third processor 340.

[0121] Figure 10 It is a schematic circuit connection diagram of the moisture content sensor and the wired communication module in the moisture content detection device provided by the embodiments of the present application. As Figure 10As shown, in some embodiments, optionally, the moisture content sensor 320 may adopt a TK100T type moisture content sensor. The moisture content sensor 320 may be powered by a 3.3V power supply and perform data transmission with the third processor 340 through the wired communication module 330.

[0122] Combined with Figure 9 and Figure 10 As shown, in some embodiments, the wired communication module 330 may be a 485 communication chip. A first voltage-dividing resistor (such as the resistors R97 and R98 shown in Figure 10 shown) may be connected between the 485 communication chip and the moisture content sensor 320, and a second voltage-dividing resistor (such as the resistors R91, R92, and R93 shown in Figure 10 shown) may be connected between the 485 communication chip and the third processor 340. The first voltage-dividing resistor and the second voltage-dividing resistor may play a role in voltage division and current-limiting protection. The data transmission pin SF_TX and the data reception pin SF_RX of the 485 communication chip may be electrically connected to different I / O pins of the third processor 340 respectively. The moisture content sensor 320 may transmit the collected moisture content data inside the tobacco stack to the third processor 340 through the 485 communication chip.

[0123] In some embodiments, optionally, the third wireless communication module 350 may include a LoRa wireless communication module, which can achieve long-distance wireless data transmission. LoRa (Long Range) wireless communication, for example, can achieve wireless communication over several kilometers, and the LoRa wireless communication module can be powered by a battery and can work in a low-power mode, thereby further extending the service life and battery life of the moisture content detection device and meeting the actual use requirements for detecting the environmental parameters of the tobacco stack. In addition, LoRa wireless communication enhances the anti-interference ability through technologies such as spread-spectrum modulation and frequency hopping and is suitable for working in complex channel environments.

[0124] The third wireless communication module 350 may communicate with the third processor 340 through the Serial Peripheral Interface (SPI) communication method.

[0125] The transmission rate of SPI communication is usually high and is suitable for the rapid transmission of large amounts of data. Moreover, the required pins are simple, usually only 4 main signal lines are needed, which is convenient for hardware connection.

[0126] The third wireless communication module 350 may also be provided with a reset pin, and the reset pin may be electrically connected to the third processor 340.

[0127] The inventors of the present application further found through research that most current moisture content sensors are powered by lithium batteries. However, tobacco is a flammable material, so when powered by a lithium battery, there are risks of battery spontaneous combustion and tobacco combustion. In view of this, in some embodiments of the present application, the third processor 340 uses a low-power chip, such as the STM32L0 series chip, and a 3.6V dry battery is used to power the moisture content detection device, thereby reducing the risks of battery spontaneous combustion and tobacco combustion.

[0128] As Figure 9 shown, in some specific embodiments, optionally, the moisture content detection device 30 may further include a third power supply 360 and a third power supply chip 370. The third power supply 360 may be a 3.6V dry battery.

[0129] The third power supply chip 370 may be electrically connected to the third power supply 360. Specifically, the input end of the third power supply chip 370 may be electrically connected to the third power supply 360, and the output end of the third power supply chip 370 may be electrically connected to the moisture content sensor 320, the wired communication module 330, the third processor 340, and the third wireless communication module 350. The third power supply chip 370 may be used to convert the 3.6V electrical signal output by the third power supply 360 into an electrical signal with a target voltage value, and supply power to the moisture content sensor 320, the wired communication module 330, the third processor 340, and the third wireless communication module 350 through the electrical signal with the target voltage value. The target voltage value may be flexibly adjusted according to actual situations, and the present application does not make any limitations in this regard. For example, in some examples, the target voltage value may be 3.3V.

[0130] In this way, the embodiment of the present application uses a 3.6V dry battery to power the moisture content detection device, which can reduce the risks of battery spontaneous combustion and tobacco combustion.

[0131] According to some embodiments of the present application, optionally, the third housing 210 is provided with ventilation holes (not shown in the figure). The material of the third housing and the number of ventilation holes may be flexibly adjusted according to actual situations, and the present application does not make any limitations in this regard.

[0132] In this way, devices such as the moisture content sensor are integrated in the third housing, which can facilitate portability and arrangement and reduce the workload of arrangement. In addition, the third housing is provided with ventilation holes, and the gas inside and outside the third housing can flow through the ventilation holes, which is convenient for the moisture content sensor to detect the moisture content data inside the tobacco stack.

[0133] According to some embodiments of the present application, optionally, one or more tobacco stacks may be placed in each airtight tent, and at least one moisture content detection device 30 may be arranged on each tobacco stack. Each moisture content detection device 30 may be used to detect the moisture content data inside the corresponding tobacco stack, thereby improving the accuracy of detecting the environmental parameters of each tobacco stack.

[0134] In order to distinguish the data uploaded by different moisture content detection devices, in some embodiments, the moisture content detection device 30 may further include an eight-bit DIP switch. The eight-bit DIP switch in the moisture content detection device has the same structure as the Figure 5 eight-bit DIP switch 180 shown, and for the specific structure, please refer to Figure 5 , and it will not be shown separately here. The eight-bit DIP switch may be electrically connected to the third processor 340. The eight-bit DIP switch is provided with a plurality of switch buttons, such as 8 switch buttons, and each switch button can be set to a conducting state or a non-conducting state. Combinations of multiple switch buttons in different states are used to set the data upload time interval, communication address, communication channel, and / or communication mode of the moisture content detection device.

[0135] Each switch button can be set to "ON" (conducting) or "OFF" (non-conducting). Combinations of multiple switch buttons can represent a specific binary number. For example, a combination of 2 switch buttons can represent binary numbers from 00 to 11, a combination of 3 switch buttons can represent binary numbers from 000 to 111, and a combination of 8 switch buttons can represent binary numbers from 00000000 to 11111111.

[0136] The data upload time interval is the time interval between two adjacent data uploads of the moisture content detection device. The uploaded data may include the moisture content data inside the tobacco stack, and the data upload time interval can be flexibly adjusted according to actual situations, such as 4 hours, 10 hours, or other time intervals, and the present application does not make any limitations in this regard. The communication address, communication channel, and / or communication mode are used to distinguish the data uploaded by different moisture content detection devices.

[0137] In some specific embodiments, optionally, the eight-bit DIP switch may include a fifth eight-bit DIP switch and a sixth eight-bit DIP switch. The structure of the fifth eight-bit DIP switch is the same as that of the Figure 5 first eight-bit DIP switch 181 shown, and the structure of the sixth eight-bit DIP switch is the same as that of the Figure 5 second eight-bit DIP switch 182 shown. For the specific structure, please refer to Figure 5 , and it will not be shown separately here.

[0138] The fifth and eighth DIP switches can be used to set the data upload time interval and communication channel of the moisture content detection device. For example, the combination of the first 4 switch buttons in the fifth and eighth DIP switches is used to set the data upload time interval of the moisture content detection device, that is, the binary numbers range from 0000 to 1111. The combination of the last 4 switch buttons in the fifth and eighth DIP switches is used to set the communication channel of the moisture content detection device, that is, the binary numbers range from 0000 to 1111. The sixth and eighth DIP switches can be used to set the communication address and communication mode of the moisture content detection device. For example, the combination of the first 6 switch buttons in the sixth and eighth DIP switches is used to set the communication address of the moisture content detection device, that is, the binary numbers range from 000000 to 111111. The combination of the last 2 switch buttons in the sixth and eighth DIP switches is used to set the communication mode of the moisture content detection device, that is, the binary numbers range from 00 to 11.

[0139] When the third wireless communication module wirelessly transmits the moisture content data to the gateway device, it can send the binary numbers representing the communication address, communication channel, and / or communication mode of the moisture content detection device to the gateway device, so as to facilitate the gateway device and / or the host computer to distinguish the data uploaded by different moisture content detection devices.

[0140] When detecting the environmental parameters of tobacco stacks, multiple gateway devices and multiple moisture content detection devices 30 can be set to detect the moisture content data inside multiple tobacco stacks. Each gateway device can be associated with at least one moisture content detection device 30, that is, receive the data uploaded by at least one moisture content detection device 30. All the moisture content detection devices 30 associated with the same gateway device can adopt the same communication mode and the same communication channel, and different moisture content detection devices 30 associated with the same gateway device can adopt different communication addresses. That is, different communication modes and / or different communication channels can be used to distinguish different gateway devices, and different communication addresses can be used to distinguish different moisture content detection devices 30 associated with the same gateway device.

[0141] In this way, by setting the data upload time interval, communication address, communication channel, and / or communication mode of the moisture content detection device through the DIP switch, while realizing the automatic upload and recording of the environmental parameters of multiple tobacco stacks, it is possible to distinguish the data uploaded by different moisture content detection devices, reduce the error rate of data recording, and improve the detection accuracy.

[0142] Based on the wireless temperature and humidity and oxygen content detection device 10, core temperature detection device 20, and / or moisture content detection device 30 provided in the above embodiments, an embodiment of the present application further provides a tobacco stack environmental parameter detection system. The tobacco stack environmental parameter detection system may include a host computer and a gateway device. In addition, the tobacco stack environmental parameter detection system may further include at least one of the wireless temperature and humidity and oxygen content detection device 10, core temperature detection device 20, and moisture content detection device 30.

[0143] For example, in some embodiments, the tobacco stack environmental parameter detection system may include a host computer, a wireless temperature and humidity and oxygen content detection device 10, and a gateway device. The wireless temperature and humidity and oxygen content detection device 10 is used to detect the temperature data, humidity data, and oxygen content data around the tobacco stack, and wirelessly transmit the temperature data, humidity data, and oxygen content data around the tobacco stack to the gateway device. The gateway device is communicatively connected to the wireless temperature and humidity and oxygen content detection device and the host computer respectively, and the gateway device is used to forward the temperature data, humidity data, and oxygen content data sent by the wireless temperature and humidity and oxygen content detection device to the host computer.

[0144] For example, in some embodiments, the tobacco stack environmental parameter detection system may include a host computer, a core temperature detection device 20, and a gateway device. The core temperature detection device 20 is arranged inside the tobacco stack, and the core temperature detection device 20 is used to detect the core temperature data inside the tobacco stack, and wirelessly transmit the core temperature data inside the tobacco stack to the gateway device. The gateway device is communicatively connected to the core temperature detection device 20 and the host computer respectively, and the gateway device is used to forward the core temperature data inside the tobacco stack sent by the core temperature detection device to the host computer.

[0145] For example, in some embodiments, the tobacco stack environmental parameter detection system may include a host computer, a moisture content detection device 30, and a gateway device. The moisture content detection device 30 is arranged inside the tobacco stack, and the moisture content detection device 30 is used to detect the moisture content data inside the tobacco stack, and wirelessly transmit the moisture content data inside the tobacco stack to the gateway device. The gateway device is communicatively connected to the moisture content detection device 20 and the host computer respectively, and the gateway device is used to forward the moisture content data inside the tobacco stack sent by the moisture content detection device to the host computer.

[0146] For example, in some embodiments, the tobacco stack environmental parameter detection system may include a host computer and a gateway device. In addition, the tobacco stack environmental parameter detection system may further include at least two of the wireless temperature, humidity and oxygen content detection device 10, the core temperature detection device 20, and the moisture content detection device 30. For example, the tobacco stack environmental parameter detection system may include the wireless temperature, humidity and oxygen content detection device 10 and the core temperature detection device 20. The gateway device is respectively communicatively connected to the wireless temperature, humidity and oxygen content detection device 10, the core temperature detection device 20, and the host computer. The gateway device may be used to transmit the temperature data, humidity data, oxygen content data, and core temperature data around the tobacco stack to the host computer. Optionally, one or more tobacco stacks are placed in the airtight tent, and at least one wireless temperature, humidity and oxygen content detection device and at least one core temperature detection device are arranged for each tobacco stack.

[0147] Again, for example, the tobacco stack environmental parameter detection system may include the wireless temperature, humidity and oxygen content detection device 10 and the moisture content detection device 30. The gateway device is respectively communicatively connected to the wireless temperature, humidity and oxygen content detection device 10, the moisture content detection device 30, and the host computer. The gateway device may be used to transmit the temperature data, humidity data, oxygen content data, and moisture content data around the tobacco stack to the host computer.

[0148] Figure 11 It is a structural block diagram of the tobacco stack environmental parameter detection system provided by the embodiments of the present application. As Figure 11 shown, in some embodiments, the tobacco stack environmental parameter detection system 1000 may include the wireless temperature, humidity and oxygen content detection device 10, the core temperature detection device 20, the moisture content detection device 30, the host computer 40, and the gateway device 50.

[0149] The wireless temperature, humidity and oxygen content detection device 10 is arranged in the airtight tent where the tobacco stack is placed. The wireless temperature, humidity and oxygen content detection device 10 may be used to detect the temperature data, humidity data, and oxygen content data around the tobacco stack, and wirelessly transmit the temperature data, humidity data, and oxygen content data around the tobacco stack to the gateway device 50.

[0150] The core temperature detection device 20 is arranged inside the tobacco stack. The core temperature detection device 20 may be used to detect the core temperature data inside the tobacco stack, and wirelessly transmit the core temperature data inside the tobacco stack to the gateway device 50.

[0151] The moisture content detection device 30 is arranged inside the tobacco stack. The moisture content detection device 30 may be used to detect the moisture content data inside the tobacco stack, and wirelessly transmit the moisture content data inside the tobacco stack to the gateway device 50.

[0152] The gateway device 50 is communicatively connected to the wireless temperature, humidity and oxygen content detection device 10, the core temperature detection device 20, the moisture content detection device 30 and the host computer respectively. The gateway device 50 can be used to transmit the temperature data, humidity data and oxygen content data around the tobacco stack, as well as the core temperature data and moisture content data inside the tobacco stack to the host computer 40, so as to realize the automatic detection of the environmental parameters of the tobacco stack.

[0153] For example, in some specific application embodiments, multiple airtight tents can be placed in a tobacco storage warehouse, and at least one tobacco stack can be placed in each airtight tent. Each tobacco stack is respectively provided with at least one wireless temperature, humidity and oxygen content detection device 10, at least one core temperature detection device 20 and at least one moisture content detection device 30. For example, during the operation of nitrogen filling and oxygen reduction, the detection devices of each tobacco stack can wirelessly transmit the temperature data, humidity data and oxygen content data around the tobacco stack, as well as the core temperature data and moisture content data inside the tobacco stack to the corresponding gateway device 50. The gateway device 50 then transmits the temperature data, humidity data and oxygen content data around the tobacco stack, as well as the core temperature data and moisture content data inside the tobacco stack to the host computer 40, so as to realize the automatic detection during the nitrogen filling and oxygen reduction process.

[0154] The tobacco stack environmental parameter detection system provided by the embodiment of the present application has the beneficial effects of the wireless temperature, humidity and oxygen content detection device 10, the core temperature detection device 20 and / or the moisture content detection device 30 provided by the embodiment of the present application. For the specific descriptions of the wireless temperature, humidity and oxygen content detection device 10, the core temperature detection device 20 and the moisture content detection device 30, reference can be made to the above embodiments. The embodiments of the present application will not be elaborated herein.

[0155] It should be understood that the specific structure of the circuit provided by the accompanying drawings of the embodiments of the present application is only some examples and does not limit the present application. In addition, the above embodiments provided by the present application can be combined with each other without conflict.

Claims

1. A wireless temperature, humidity and oxygen content detection device, characterized in that, The wireless temperature and humidity and oxygen content detection device is used to be arranged in an airtight tent where tobacco stacks are placed, and it includes a first processor, a temperature and humidity sensor, an oxygen sensor, a first signal processing circuit, and a first wireless communication module; The temperature and humidity sensor is electrically connected to the first processor, and is used to collect the temperature data and humidity data around the tobacco stack, and send the temperature data and the humidity data to the first processor; The first signal processing circuit includes a voltage dividing module, at least one operational amplifier module, and an analog-to-digital conversion module. The voltage dividing module is electrically connected between the oxygen sensor and at least one operational amplifier module. The voltage dividing module is used to convert the current signal output by the oxygen sensor into a voltage signal. At least one operational amplifier module is used to amplify the voltage signal to obtain an amplified voltage signal. The analog-to-digital conversion module is electrically connected between at least one operational amplifier module and the first processor. The analog-to-digital conversion module is used to convert the amplified voltage signal into a digital signal and transmit the digital signal to the first processor; The first processor is used to read the digital signal to obtain the oxygen content data around the tobacco stack; The first wireless communication module is electrically connected to the first processor, and is used to wirelessly transmit the temperature data, the humidity data, and the oxygen content data to a gateway device.

2. The wireless temperature and humidity and oxygen content detection device according to claim 1, characterized in that, The wireless temperature and humidity and oxygen content detection device further includes: An eight-bit DIP switch, which is electrically connected to the first processor. The eight-bit DIP switch is provided with a plurality of switch buttons, and each switch button can be set to a conduction state or a cut-off state. The combination of a plurality of switch buttons in different states is used to set the data upload time interval, communication address, communication channel, and / or communication mode of the wireless temperature and humidity and oxygen content detection device.

3. The wireless temperature and humidity and oxygen content detection device according to claim 2, wherein The eight-bit DIP switch includes a first eight-bit DIP switch and a second eight-bit DIP switch. The first eight-bit DIP switch is used to set the data upload time interval and the communication channel, and the second eight-bit DIP switch is used to set the communication address and the communication mode; The wireless temperature and humidity and oxygen content detection device and the gateway device adopt the same communication mode and the same communication channel.

4. The wireless temperature and humidity and oxygen content detection device according to claim 1, characterized in that, The first processor is a low-power chip.

5. The wireless temperature and humidity and oxygen content detection device according to claim 1, characterized in that The wireless temperature and humidity and oxygen content detection device further includes: A first power supply, and the first power supply includes a 3.6V dry battery; A first power supply chip, which is electrically connected to the first power supply, and is used to convert the 3.6V electrical signal output by the first power supply into an electrical signal with a target voltage value, and supply power to the first processor, the temperature and humidity sensor, the oxygen sensor, and the first wireless communication module through the electrical signal with the target voltage value.

6. The wireless temperature and humidity and oxygen content detection device according to claim 1, characterized in that, The oxygen sensor is equipped with an oxygen detection probe.

7. The wireless temperature, humidity and oxygen content detection device according to claim 1, characterized in that, The clock signal output end of the temperature and humidity sensor is electrically connected to the clock signal input end of the first processor, the data signal output end of the temperature and humidity sensor is electrically connected to the data signal input end of the first processor, and the temperature and humidity sensor communicates with the first processor through an integrated circuit bus.

8. The wireless temperature, humidity and oxygen content detection device according to claim 1, characterized in that, The wireless temperature and humidity and oxygen content detection device is further provided with a first housing, and the first housing is provided with ventilation holes; The first processor, the temperature and humidity sensor, the oxygen sensor, the first signal processing circuit and the first wireless communication module are all located in the accommodation space formed by the first housing.

9. The wireless temperature and humidity and oxygen content detection device according to claim 1, wherein The first wireless communication module is a LoRa wireless communication module.

10. A tobacco stack environmental parameter detection system, characterized in that, Comprising: A host computer; The wireless temperature and humidity and oxygen content detection device according to any one of claims 1-9; A gateway device, which is respectively communicatively connected to the wireless temperature and humidity and oxygen content detection device and the host computer, and the gateway device is used to forward the temperature data, the humidity data and the oxygen content data sent by the wireless temperature and humidity and oxygen content detection device to the host computer.

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