A wireless sensor device based on a dual-polarized antenna

Abstract

This invention relates to a wireless sensor device based on a dual-polarized antenna, comprising a wireless sensor network coordinator and several wireless sensor parameter acquisition nodes based on dual-polarized antennas. The wireless sensor network coordinator manages and coordinates the entire network measurement system, receives measurement data from each wireless sensor parameter acquisition node, re-frames the data according to a format set by a backend monitoring center, and uploads all measurement data to the backend status monitoring center. Each wireless sensor parameter acquisition node acquires sensitive environmental data through built-in or external sensors, performs internal transformation and processing circuitry to acquire sensitive signals, and wirelessly transmits the acquired environmental measurement data to the wireless sensor network coordinator via a dual-polarized antenna. This invention improves the reliability and stability of data transmission in complex environments by wireless sensor networks, and solves the problems of radio frequency signal attenuation and transmission link instability.

Description

Technical Field

[0001] This invention relates to a wireless sensor network measurement device, belonging to the field of wireless sensor technology. Background Technology

[0002] Distributed wireless sensor networks (DNNs) exhibit significant advantages in complex industrial environments, including topology self-organization, high deployment flexibility, and effective reduction of the weight and wiring complexity associated with wired cables. However, in scenarios with high real-time requirements, such as high-end CNC machine tools, aerospace equipment, and energy facility monitoring, these networks often face harsh conditions such as highly dynamic environments, complex structural obstructions, and multipath interference. These factors can easily lead to increased bit error rates in wireless links, and even cause data packet loss and network outages, directly impacting the reliability and real-time response capabilities of the monitoring system.

[0003] As a crucial switching device in wireless sensor transceivers, the performance of antennas directly affects the overall communication performance of the wireless network and the deployment location of the product. Traditional wireless sensor networks primarily rely on single-polarized antennas. While these antennas perform well in certain application scenarios, their performance is often limited under the complex conditions described above. On one hand, the instability of the signal propagation path leads to severe signal attenuation, affecting the quality and reliability of data transmission. On the other hand, single-polarized antennas struggle to overcome the signal shielding effect caused by metal obstructions, which not only increases the risk of link interruption but also reduces the robustness of the entire system. For example, in a closed metal enclosure, the electromagnetic waves emitted by the master node undergo multiple reflections, altering their polarization characteristics. The characteristics of the received signal vary depending on the location of the slave node. If the polarization characteristics of the slave node's antenna match the polarization characteristics of the signal arriving at that point, its reception will be significantly improved; otherwise, it will be poor. Summary of the Invention

[0004] The technical problem solved by this invention is to overcome the shortcomings of the prior art and provide a wireless sensor device based on a dual-polarized antenna. This device solves the problems of bit errors, packet loss, and even communication interruption caused by complex equipment structures, narrow spaces, complex electromagnetic environments, and multipath reflections in industrial settings. It enables wireless sensor networks to have strong anti-interference capabilities in high-value and high-security applications such as aerospace equipment.

[0005] The technical solution of this invention is: a wireless sensor device based on a dual-polarized antenna, comprising a wireless sensor network coordinator and several wireless sensor parameter acquisition nodes based on dual-polarized antennas; the wireless sensor network coordinator is used to manage and coordinate the entire network measurement system, receive measurement data from each wireless sensor parameter acquisition node, and re-frame all measurement data according to the format set by the backend monitoring center before uploading all measurement data to the backend status monitoring center; the wireless sensor parameter acquisition nodes acquire sensitive environmental data through built-in or external sensor sensing and internal transformation processing circuits, and wirelessly transmit the acquired environmental measurement data to the wireless sensor network coordinator through the dual-polarized antenna.

[0006] The hardware of the wireless sensor parameter acquisition node includes a sensor sensing circuit, a data processing circuit, a wireless radio frequency circuit, and a dual-polarized antenna; the software includes a microprocessor control module, a signal acquisition and processing module, a radio frequency transceiver module, and a channel quality assessment module.

[0007] The dual-polarized antenna of the wireless sensor parameter acquisition node includes two polarization modes: horizontal polarization and vertical polarization. It is connected to the wireless radio frequency circuit through two different radio frequency cables.

[0008] The wireless radio frequency circuit of the wireless sensor parameter acquisition node includes a dual-channel radio frequency switch, which can quickly respond to the opening and closing of the radio frequency channel according to the control instructions of the microprocessor control module software.

[0009] The channel quality assessment module of the wireless sensor parameter acquisition node includes a signal strength monitoring unit, a packet loss / bit error rate calculation unit, and a stability assessment unit. The signal strength monitoring unit periodically samples the signal strength under the current antenna polarization. The packet loss / bit error rate calculation unit calculates the packet loss / bit error rate under the current antenna polarization. The stability assessment unit assesses the stability of the wireless transmission link under the current antenna polarization based on the fluctuations in signal strength and packet loss / bit error rate over a period of time.

[0010] The microprocessor control module of the wireless sensor parameter acquisition node, in addition to completing network networking and environmental parameter acquisition according to the preset network communication protocol, also performs dynamic switching of the antenna polarization mode with optimal signal quality based on the parameters monitored by the channel quality assessment module.

[0011] The system also dynamically switches the antenna polarization mode with the best signal quality based on the parameters monitored by the channel quality assessment module. This includes: the module dynamically calculates the comprehensive score of each antenna polarization mode based on the monitored signal strength, packet loss / bit error rate and stability parameters, according to the configurable weights of each parameter, and selects the mode with the highest comprehensive score as the antenna polarization mode for the next wireless transmission link.

[0012] The workflow of the microprocessor control module includes: receiving the real-time monitoring results from the channel quality assessment module, calculating the antenna polarization score, determining whether to switch the antenna polarization based on the assessment results; if switching is required, outputting control commands to instruct the wireless sensor acquisition nodes to switch the antenna polarization; after confirming successful polarization switching, updating relevant records; and after completing all operations, returning to continue monitoring the transmission signal quality under the current polarization.

[0013] The working process of the wireless sensor, wherein the wireless sensor network adopts a star topology, and the working states include sleep, data acquisition node wake-up, clock synchronization, point polling, time slot allocation, and data transmission. Under the control of the wireless sensor network coordinator, the transition from the sleep state to the network data transmission state includes: The wireless sensor network coordinator initiates the network setup by broadcasting wake-up data twice to the dormant dual-polarized wireless sensor data acquisition nodes. The awakened wireless sensors then activate their wireless radio frequency transceiver functions and enter the data acquisition node wake-up state. The wireless sensor acquisition node outputs a control signal to the radio frequency switch, which selects different radio frequency channels in sequence and receives sleep and wake-up data twice through different antenna polarization methods. After sending the broadcast wake-up data, the wireless sensor network coordinator broadcasts clock synchronization data for a fixed duration twice more. The wireless sensor acquisition nodes then select different radio frequency channels and use different antenna polarization methods to receive specific information bits in the data packets to align the clock count and complete the clock synchronization of the entire network. The wireless sensor network coordinator repeats twice, sending polling data and receiving wireless transmission signal quality information under different antenna polarization modes to each sensor node address at fixed time intervals; then it switches to data receiving state to receive polling response data; the wireless sensor responds to the polling twice, and after receiving polling data for its own ID number each time, it replies to the network coordinator node with a polling response. The wireless sensor acquisition node calculates the signal quality received from the wireless sensor coordinator node and stores it together with the signal quality received by the wireless sensor coordinator node from the wireless sensor acquisition node in the polling data into the dynamic statistics table of wireless transmission signal quality when working with different antenna polarization modes. The wireless sensor acquisition node establishes an antenna polarization usage score based on a dynamic statistical table of wireless transmission signal quality when operating under different antenna polarization modes, and dynamically switches the antenna polarization mode to perform wireless data transmission and reception by selecting the highest score. Based on the received polling response data, the network coordinator node allocates sensitive data transmission time slots as needed, and sends the time slot allocation information and the received signal quality data from the wireless sensor acquisition nodes to each wireless sensor acquisition node. After the time slot allocation is completed, all wireless sensor acquisition nodes enter the sensitive parameter acquisition working mode and complete the uplink transmission of sensitive data within the time slot interval allocated by the wireless sensor network coordinator node. The wireless sensor acquisition node sends sensitive data during data transmission. Based on the signal quality information received by the wireless sensor coordinator node from the wireless sensor acquisition node, the signal quality dynamic statistics table is dynamically updated. After each uplink sensitive data transmission cycle is completed, real-time network clock synchronization is performed; the network coordinator repeatedly sends fixed-duration clock synchronization data twice; the wireless sensor acquisition node uses different polarized antennas to receive synchronization information twice to complete clock synchronization, and at the same time, it counts the received signal quality using different polarized antennas before continuing the next cycle of data transmission.

[0014] The advantages of this invention compared to the prior art are: (1) The present invention introduces a dual-polarized antenna into a wireless sensor device, which can improve multipath fading and polarization mismatch. In complex channels, the polarization state of the signal may change randomly after reflection and scattering, resulting in attenuation of the received signal. By evaluating the signal quality in real time and matching the dominant polarization mode of the channel, the influence of multipath fading can be effectively offset and a stable connection can be maintained.

[0015] (2) The present invention introduces a dual-polarized antenna into a wireless sensor device, which can effectively suppress interference from co-channel signals. When there is an unwanted co-channel interference signal, the antenna polarization is adjusted to be orthogonal to the polarization of the interference signal, thereby "filtering out" the interference in the spatial polarization domain and significantly improving the signal-to-noise ratio of the transmitted signal.

[0016] (3) This invention introduces a dual-polarized antenna into wireless sensor devices, which can promote device integration and platform conformance. By changing the antenna surface current distribution through software / electrical adjustment, different communication requirements can be adapted without replacing hardware. While reducing hardware complexity and cost, it is beneficial to device miniaturization and conformal design, and improves the maintainability and reconfigurability of the system.

[0017] (4) The wireless sensor devices, methods, apparatus, and systems based on dual-polarized antennas involved in this invention significantly improve the reliability and efficiency of data transmission by automatically selecting the optimal antenna polarization. Based on the design of omnidirectional dual-polarized antennas and the efficient signal analysis function of the channel quality assessment module, the signal attenuation and link interruption problems faced by traditional single-polarized systems are effectively solved, thereby improving the overall system stability and application value. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a wireless sensor device based on a dual-polarized antenna.

[0019] Figure 2 This is a block diagram of the radio frequency circuit principle for a dual-polarized antenna wireless sensor device.

[0020] Figure 3 This is a flowchart illustrating the process of switching antenna polarization based on channel quality.

[0021] Figure 4 This is a timing diagram of a real-time wireless sensor network transmission protocol based on a dual-polarized antenna. Detailed Implementation

[0022] This invention relates to a wireless sensor device based on a dual-polarized antenna, comprising a wireless sensor network coordinator and several wireless sensor parameter acquisition nodes based on dual-polarized antennas. The wireless sensor network coordinator manages and coordinates the entire network measurement system, receives measurement data from each wireless sensor parameter acquisition node, re-frames the data according to a format set by the backend monitoring center, and uploads all measurement data to the backend status monitoring center. The wireless sensor parameter acquisition nodes acquire sensitive environmental data through built-in or external sensors, perform internal transformation and processing circuitry to acquire sensitive signals, and wirelessly transmit the acquired environmental measurement data to the wireless sensor network coordinator via dual-polarized antennas.

[0023] The hardware of the wireless sensor parameter acquisition node includes a sensor sensing circuit, a data processing circuit, a wireless radio frequency circuit, and a dual-polarized antenna; the software includes a microprocessor control module, a signal acquisition and processing module, a radio frequency transceiver module, and a channel quality assessment module.

[0024] The dual-polarized antenna of the wireless sensor parameter acquisition node includes two polarization modes: horizontal polarization and vertical polarization. It is connected to the wireless radio frequency circuit through two different radio frequency cables.

[0025] The wireless radio frequency circuit of the wireless sensor parameter acquisition node includes a dual-channel radio frequency switch, which can quickly respond to the opening and closing of the radio frequency channel according to the control instructions of the microprocessor control module software.

[0026] The channel quality assessment module of the wireless sensor parameter acquisition node includes a signal strength monitoring unit, a packet loss / bit error rate calculation unit, and a stability assessment unit. The signal strength monitoring unit periodically samples the signal strength under the current antenna polarization. The packet loss / bit error rate calculation unit calculates the packet loss / bit error rate under the current antenna polarization. The stability assessment unit assesses the stability of the wireless transmission link under the current antenna polarization based on the fluctuations in signal strength and packet loss / bit error rate over a period of time.

[0027] The microprocessor control module of the wireless sensor parameter acquisition node, in addition to completing network networking and environmental parameter acquisition according to the preset network communication protocol, also performs dynamic switching of the antenna polarization mode with optimal signal quality based on the parameters monitored by the channel quality assessment module.

[0028] The system also dynamically switches the antenna polarization mode with the best signal quality based on the parameters monitored by the channel quality assessment module. This includes: the module dynamically calculates the comprehensive score of each antenna polarization mode based on the monitored signal strength, packet loss / bit error rate and stability parameters, according to the configurable weights of each parameter, and selects the mode with the highest comprehensive score as the antenna polarization mode for the next wireless transmission link.

[0029] The workflow of the microprocessor control module includes: receiving the real-time monitoring results from the channel quality assessment module, calculating the antenna polarization score, determining whether to switch the antenna polarization based on the assessment results; if switching is required, outputting control commands to instruct the wireless sensor acquisition nodes to switch the antenna polarization; after confirming successful polarization switching, updating relevant records; and after completing all operations, returning to continue monitoring the transmission signal quality under the current polarization.

[0030] The present invention will be further explained and described below with reference to the accompanying drawings and specific embodiments.

[0031] A wireless sensor network consists of a wireless sensor network coordinator node and several wireless sensor acquisition nodes. The wireless sensor network coordinator node is responsible for the overall control of the sensor network, including time slot allocation, clock synchronization, sleep / wake-up, and network entry / exit for the wireless sensor acquisition nodes. A schematic diagram of the wireless sensor acquisition nodes is shown below. Figure 1 As shown, the hardware integrates sensor sensing circuits, data processing circuits, wireless radio frequency circuits, and an omnidirectional dual-polarized antenna. The software includes a signal acquisition and processing module, a radio frequency transceiver module, a channel quality assessment module, and a microprocessor (MCU) control module. The wireless sensor node collects environmentally sensitive data and transmits it through the dual-polarized antenna. The channel quality assessment module monitors the wireless signal status and provides assessment results. The control module adjusts the antenna polarization based on the assessment results to ensure optimal transmission performance of the wireless link.

[0032] like Figure 2 As shown, the dual-polarized antenna wireless sensor hardware RF circuit includes an optional RF amplifier circuit and a dual-channel RF switch. The RF channel leads are connected to the antenna via an RF cable. During operation, the RF switch responds quickly to the opening and closing operations of the RF channel under the control of the microprocessor.

[0033] Figure 3The specific steps for switching antenna polarization based on channel quality in this embodiment are described below: Step 101: The wireless sensor network coordinator starts up, initializes network parameters, establishes communication connections with each wireless sensor acquisition node, and ensures the normal operation of the network.

[0034] Step 102: The wireless sensor acquisition node collects environmental data, such as temperature, vibration, and pressure, through its built-in sensors, and at the same time monitors the quality of the wireless sensor network coordinator signal received under the current antenna polarization mode.

[0035] Step 103: The wireless sensor acquisition node obtains key parameters such as the signal strength, bit error rate, and stability of the current polarization channel.

[0036] Step 104: The channel quality assessment module and the microprocessor control module calculate the comprehensive score of the antenna polarization mode based on the real-time signal monitoring parameters, and select the mode with the highest comprehensive score as the optimal antenna polarization mode. They then determine whether a polarization mode switch is needed. If a switch is needed, proceed to step 105. If no switch is needed, proceed to step 108.

[0037] Step 105: Based on the channel quality assessment module results, the microprocessor control module of the wireless sensor acquisition node issues an antenna polarization switching parameter command. Upon receiving the parameter command, the dual-channel RF switch dynamically switches to the antenna polarization mode with the optimal signal quality for wireless data transmission.

[0038] Step 106: The wireless sensor acquisition node confirms that the polarization channel switching was successful.

[0039] Step 107: The wireless sensor acquisition node updates the antenna polarization records.

[0040] Step 108: Continue monitoring the channel signal quality under the current antenna polarization.

[0041] Figure 4 An example timing diagram for a dual-polarized wireless sensor network is provided. This example assumes a star topology in the wireless sensor network and includes operational states such as sleep, node wake-up, clock synchronization, polling, time slot allocation, and data transmission. Under the control of the wireless sensor network coordinator, from the sleep state to the network data transmission state, each dual-polarized antenna wireless sensor node selects the optimal antenna polarization in real time for data transmission. The specific steps are explained below: Step 1: The wireless sensor network coordinator initiates the network setup by broadcasting wake-up data twice to the dormant dual-polarized wireless sensor data acquisition nodes. The awakened wireless sensors then activate their wireless RF transceiver functions and enter the data acquisition node wake-up state.

[0042] Step 2: The wireless sensor acquisition node outputs a control signal to the radio frequency switch, which selects different radio frequency channels and receives sleep and wake-up data twice through different antenna polarization methods.

[0043] Step 3: After sending the broadcast wake-up data, the wireless sensor network coordinator broadcasts fixed-duration clock synchronization data twice more. The wireless sensor acquisition nodes then select different radio frequency channels and use different antenna polarization methods to receive specific information bits in the data packets to align the clock count, thus completing the clock synchronization of the entire network.

[0044] Step 4: The wireless sensor network coordinator repeats this process twice, sending polling data and receiving wireless transmission signal quality information for different antenna polarization modes from each sensor node address at regular time intervals. It then transitions to data reception mode to receive polling response data. The wireless sensor responds to the polling twice, replying to the network coordinator node with a polling response after each time it receives polling data for its own ID number.

[0045] Step 5: The wireless sensor acquisition node calculates the signal quality received from the wireless sensor coordinator node, and stores it together with the signal quality received by the wireless sensor acquisition node from the wireless sensor coordinator node in the polling data into the dynamic statistics table of wireless transmission signal quality when operating under different antenna polarization modes.

[0046] Step 6: The wireless sensor acquisition node establishes an antenna polarization usage score based on the dynamic statistics table of wireless transmission signal quality when working with different antenna polarization modes, and dynamically switches the antenna polarization mode to perform wireless data transmission and reception by selecting the highest score.

[0047] Step 7: Based on the received polling response data, the network coordinator node allocates sensitive data transmission time slots as needed, and sends the time slot allocation information and the received signal quality data from the wireless sensor acquisition nodes to each wireless sensor acquisition node.

[0048] Step 8: After the time slot allocation is completed, all wireless sensor acquisition nodes enter the sensitive parameter acquisition working mode and complete the uplink transmission of sensitive data within the time slot interval allocated by the wireless sensor network coordinator node.

[0049] Step 9: Data transmission status. The wireless sensor acquisition node sends sensitive data, and the wireless sensor coordinator node dynamically updates the signal quality dynamic statistics table based on the signal quality information received from the wireless sensor acquisition node.

[0050] Step 10: After each uplink sensitive data transmission cycle is completed, real-time network clock synchronization is performed. The network coordinator repeatedly sends clock synchronization data of fixed duration twice. The wireless sensor acquisition nodes use different polarized antennas to receive synchronization information twice to complete clock synchronization, and at the same time, they analyze the received signal quality using different polarized antennas before continuing with the next data transmission cycle.

[0051] The wireless sensor device based on a dual-polarized antenna according to this application embodiment can be executed by a single device, such as a sensor node integrating the above-described modules. The device of this embodiment can also be applied in a distributed scenario, where multiple devices cooperate to complete the task. In such a distributed scenario, one of these devices may execute only one or more steps of the method in this application embodiment, and the multiple devices will interact with each other to complete the implementation of the device.

[0052] To further improve the robustness of the system, the control system can set different switching strategies according to actual needs, such as periodically switching polarization modes or only switching when the signal quality is severely degraded, in order to balance performance and energy consumption.

[0053] This invention not only solves the signal attenuation and link interruption problems faced by traditional single-polarization systems, but also provides a flexible polarization mode switching mechanism, enhancing the system's adaptability and reliability, and significantly improving the stability and application value of wireless sensor network systems.

[0054] The contents not described in detail in this specification are common knowledge to those skilled in the art.

Claims

1. A wireless sensor device based on a dual-polarized antenna, characterized in that: The system includes a wireless sensor network coordinator and several wireless sensor parameter acquisition nodes based on dual-polarized antennas. The wireless sensor network coordinator manages and coordinates the entire network measurement system, receives measurement data from each wireless sensor parameter acquisition node, re-frames the data according to the format set by the backend monitoring center, and uploads all measurement data to the backend status monitoring center. The wireless sensor parameter acquisition nodes acquire sensitive environmental data through built-in or external sensors, perform internal transformation and processing circuitry to acquire sensitive signals, and wirelessly transmit the acquired environmental measurement data to the wireless sensor network coordinator through dual-polarized antennas.

2. The wireless sensor device based on a dual-polarized antenna according to claim 1, characterized in that, The hardware of the wireless sensor parameter acquisition node includes a sensor sensing circuit, a data processing circuit, a wireless radio frequency circuit, and a dual-polarized antenna; the software includes a microprocessor control module, a signal acquisition and processing module, a radio frequency transceiver module, and a channel quality assessment module.

3. A wireless sensor device based on a dual-polarized antenna according to claim 2, characterized in that, The dual-polarized antenna of the wireless sensor parameter acquisition node includes two polarization modes: horizontal polarization and vertical polarization. It is connected to the wireless radio frequency circuit through two different radio frequency cables.

4. A wireless sensor device based on a dual-polarized antenna according to claim 2, characterized in that, The wireless radio frequency circuit of the wireless sensor parameter acquisition node includes a dual-channel radio frequency switch, which can quickly respond to the opening and closing of the radio frequency channel according to the control instructions of the microprocessor control module software.

5. A wireless sensor device based on a dual-polarized antenna according to claim 2, characterized in that, The channel quality assessment module of the wireless sensor parameter acquisition node includes a signal strength monitoring unit, a packet loss / bit error rate calculation unit, and a stability assessment unit. The signal strength monitoring unit periodically samples the signal strength under the current antenna polarization. The packet loss / bit error rate calculation unit calculates the packet loss / bit error rate under the current antenna polarization. The stability assessment unit assesses the stability of the wireless transmission link under the current antenna polarization based on the fluctuations in signal strength and packet loss / bit error rate over a period of time.

6. A wireless sensor device based on a dual-polarized antenna according to claim 2, characterized in that, The microprocessor control module of the wireless sensor parameter acquisition node, in addition to completing network networking and environmental parameter acquisition according to the preset network communication protocol, also performs dynamic switching of the antenna polarization mode with optimal signal quality based on the parameters monitored by the channel quality assessment module.

7. A wireless sensor device based on a dual-polarized antenna according to claim 6, characterized in that, The system also dynamically switches the antenna polarization mode with the best signal quality based on the parameters monitored by the channel quality assessment module. This includes: the module dynamically calculates the comprehensive score of each antenna polarization mode based on the monitored signal strength, packet loss / bit error rate and stability parameters, according to the configurable weights of each parameter, and selects the mode with the highest comprehensive score as the antenna polarization mode for the next wireless transmission link.

8. A wireless sensor device based on a dual-polarized antenna according to any one of claims 2-7, characterized in that, The workflow of the microprocessor control module includes: receiving the real-time monitoring results from the channel quality assessment module, calculating the antenna polarization score, determining whether to switch the antenna polarization based on the assessment results; if switching is required, outputting control commands to instruct the wireless sensor acquisition nodes to switch the antenna polarization; after confirming successful polarization switching, updating relevant records; and after completing all operations, returning to continue monitoring the transmission signal quality under the current polarization.

9. The working process of the wireless sensor according to claim 1, wherein the wireless sensor network adopts a star topology, and the working states include sleep, data acquisition node wake-up, clock synchronization, point polling, time slot allocation, and data transmission, and under the control of the wireless sensor network coordinator, the sensor transitions from the sleep state to the network data transmission state, characterized in that... include: The wireless sensor network coordinator initiates the network setup by broadcasting wake-up data twice to the dormant dual-polarized wireless sensor data acquisition nodes. The awakened wireless sensor activates its wireless radio frequency transceiver function and enters the wake-up state of the data acquisition node; The wireless sensor acquisition node outputs a control signal to the radio frequency switch, which selects different radio frequency channels in sequence and receives sleep and wake-up data twice through different antenna polarization methods. After sending the broadcast wake-up data, the wireless sensor network coordinator broadcasts clock synchronization data for a fixed duration twice more. The wireless sensor acquisition nodes then select different radio frequency channels and use different antenna polarization methods to receive specific information bits in the data packets to align the clock count and complete the clock synchronization of the entire network. The wireless sensor network coordinator repeats twice, sending polling data and receiving wireless transmission signal quality information under different antenna polarization modes to each sensor node address at fixed time intervals; then it switches to data receiving state to receive polling response data; the wireless sensor responds to the polling twice, and after receiving polling data for its own ID number each time, it replies to the network coordinator node with a polling response. The wireless sensor acquisition node calculates the signal quality received from the wireless sensor coordinator node and stores it together with the signal quality received by the wireless sensor coordinator node from the wireless sensor acquisition node in the polling data into the dynamic statistics table of wireless transmission signal quality when working with different antenna polarization modes. The wireless sensor acquisition node establishes an antenna polarization usage score based on a dynamic statistical table of wireless transmission signal quality when operating under different antenna polarization modes, and dynamically switches the antenna polarization mode to perform wireless data transmission and reception by selecting the highest score. Based on the received polling response data, the network coordinator node allocates sensitive data transmission time slots as needed, and sends the time slot allocation information and the received signal quality data from the wireless sensor acquisition nodes to each wireless sensor acquisition node. After the time slot allocation is completed, all wireless sensor acquisition nodes enter the sensitive parameter acquisition working mode and complete the uplink transmission of sensitive data within the time slot interval allocated by the wireless sensor network coordinator node. The wireless sensor acquisition node sends sensitive data during data transmission. Based on the signal quality information received by the wireless sensor coordinator node from the wireless sensor acquisition node, the signal quality dynamic statistics table is dynamically updated. After each uplink sensitive data transmission cycle is completed, real-time network clock synchronization is performed; the network coordinator repeatedly sends fixed-duration clock synchronization data twice. The wireless sensor acquisition node uses different polarized antennas twice to receive synchronization information to complete clock synchronization. At the same time, it counts the quality of the received signal using different polarized antennas and continues to transmit data in the next cycle.

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