Wireless pile rod vibration sensor system

Abstract

The utility model relates to a wireless pile rod vibration sensor system, and belongs to the technical field of vibration detection. The system comprises at least one vibration detection pile rod and a receiving end, the vibration detection pile rod is arranged on a driving test training field, and each vibration detection pile rod comprises a pile rod controller, a vibration sensor and a wireless communication module used for being in wireless connection with the corresponding receiving end. According to the wireless pile rod vibration sensor system, the wireless communication module is connected with the receiving end, wireless transmission of pile winding signals is achieved, the system construction cost and the damage rate of wire rod equipment are reduced, the system reliability and maintainability are improved, meanwhile, due to the fact that wireless transmission is not limited by network layout, expandability is enhanced, and the wireless pile rod vibration sensor system is suitable for being popularized and applied. Installation and debugging are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration detection, in particular to a wireless pile pole vibration sensor system. Background Art

[0002] In the driving test training industry, it is necessary to complete the relevant training assessment subjects such as vehicle parking and parallel parking by detecting whether the pole collides with the vehicle to complete the training assessment of whether the trainee's operation meets the standard. Whether the touch signal detection is accurate and whether it can be stably transmitted and summarized to the judgment background is the key to the effective operation of the driving test training system.

[0003] At present, in order to realize this kind of detection, the driving test training site usually predetermines the layout of the poles according to the preliminary surveying and mapping plan, and then hardens, grooves, and wires the site planned by the surveying and mapping plan, and connects the laid lines with the sensors installed on the poles at the planned position on the ground to realize the transmission of the collision signal. That is, the collision detection poles in the current driving test training site are wired to the information judgment background. Since grooves and buried wires are required, the installation and laying of the poles requires the use of a large number of professional tools and professional operators. Moreover, after the laying is completed, the subsequent pole positions are not easy to change or the cost of modification is high, and the scalability is poor.

[0004] At the same time, the area of ​​a driving test training site is at least 1,800 square meters and at most 5,000+ square meters. Taking the smallest site area as an example, the distance between each pole used in the slalom test project and the judgment background must be greater than 50 meters. When the signal collected by the sensor on the pole is transmitted to the judgment background by wire, transmission errors are very likely to occur at this transmission distance, and there are a large number of joints in the wired connection. The driving test training site is in an open-air environment, and rain and snow erosion and the activities of vehicles and personnel can easily lead to interface failures and line damage. At the same time, it is affected by environmental EMC (electromagnetic compatibility) interference, and there is also a risk of burning the device serial port.

[0005] In summary, it can be seen that the pole collision detection system currently used in driving test training has the defects of poor scalability and low reliability. Utility Model Content

[0006] In view of the above technical problems, the utility model provides a wireless pile pole vibration sensor system to solve the problems of poor scalability and low reliability of the existing pile pole collision detection system.

[0007] A wireless pole vibration sensor system includes at least one vibration detection pole and a receiving end. The vibration detection pole is installed on a driving test training site. The vibration detection pole includes a vibration sensor, a pole controller and a wireless communication module. Each vibration detection pole is wirelessly connected to a corresponding receiving end through the wireless communication module in the vibration detection pole.

[0008] Optionally, the vibration detection pile pole also includes a battery power supply module, in which the battery output end of the battery power supply module is connected to the enable end through a switch tube, and the enable end controls whether the battery output end and the power output end of the battery power supply module are conductive or not. The enable end is the input end of a battery voltage sampling circuit in the battery power supply module, and a battery voltage sampling end is led out between the input end of the battery voltage sampling circuit and the ground end. The battery voltage sampling end is control-connected to the pile pole controller, and when the sampling voltage of the battery voltage sampling end is lower than the over-discharge value, the pile pole controller controls the switch tube to be cut off through the control end.

[0009] Optionally, the switching tube is a P-channel field effect tube, the battery output end is connected to the source of the P-channel field effect tube, the enable end is connected to the drain of the P-channel field effect tube, the battery output end is connected to one end of the pull-up resistor, the other end of the pull-up resistor is connected to the gate of the P-channel field effect tube, a capacitor and a transistor are connected in parallel between the other end of the pull-up resistor and the ground end, the base of the transistor is connected to the control end of the pile pole controller, one of the emitter and the collector of the transistor is connected to the ground end, and the other is connected to the other end of the pull-up resistor.

[0010] Optionally, the enable end is an enable end of a low voltage dropout linear regulator, the battery output end is connected to the input end of the low voltage dropout linear regulator, and the output end of the low voltage dropout linear regulator is connected to the power output end of the battery power supply module.

[0011] Optionally, the vibration sensor is a three-axis acceleration sensor, and the input end of the pile rod controller is controllably connected to the output end of the three-axis acceleration sensor.

[0012] Optionally, the wireless pile pole vibration sensor system further includes a control center, each of the receiving ends is connected to the control center via Ethernet, and the receiving ends are powered by Ethernet.

[0013] Optionally, the receiving end transmits data to the control center via a user datagram protocol.

[0014] Optionally, the wireless communication module is a wireless mesh network module.

[0015] Optionally, the vibration detection pile rod further includes a wired power supply module.

[0016] Optionally, the pile pole controller is a 32-bit low-power single-chip microcomputer.

[0017] The above scheme has the following beneficial effects:

[0018] The wireless pile pole vibration sensor system of the utility model adopts wireless communication to complete the communication connection between each vibration detection pile pole and the corresponding receiving end, thereby realizing the transmission of the signal around the pile. Compared with the existing wired connection layout system, it avoids the use of grooving and a large amount of wires, reduces the system construction cost and avoids the damage of wire equipment caused by human and vehicle activities on the site and the open air environment, reduces the equipment damage rate, and improves the system reliability and maintainability. At the same time, because wireless transmission is not restricted by the network layout, the scalability is enhanced and the installation and debugging are convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural block diagram of a wireless pile pole vibration sensor system provided in one embodiment of the utility model;

[0020] Figure 2 It is a block diagram of the overall design principle of the receiving end provided in other embodiments of the utility model;

[0021] Figure 3 It is a block diagram of the overall design principle of the vibration detection pile provided in other embodiments of the utility model;

[0022] Figure 4-1 as well as Figure 4-2 It is a circuit schematic diagram of the pile rod controller provided in other embodiments of the utility model and a schematic diagram of its peripheral circuit structure;

[0023] Figure 5 is a circuit schematic diagram of a three-axis acceleration sensor provided in other embodiments of the utility model;

[0024] Figure 6 It is a circuit schematic diagram of a wireless communication module provided in other embodiments of the utility model;

[0025] Figure 7-1 as well as Figure 7-2 It is a circuit schematic diagram of the main power supply in the power supply system of the vibration detection pile rod and its controllable shutdown circuit provided in other embodiments of the utility model;

[0026] Figure 8 It is a circuit schematic diagram of the auxiliary power supply 1 in the power supply system of the vibration detection pile provided in other embodiments of the utility model;

[0027] Fig. 9It is a circuit schematic diagram of the auxiliary power supply 2 in the power supply system of the vibration detection pile provided in other embodiments of the utility model;

[0028] Fig.10 It is a circuit schematic diagram of the auxiliary power supply 3 in the power supply system of the vibration detection pile provided in other embodiments of the utility model;

[0029] Fig.11 It is a schematic diagram of the external interface circuit of the vibration detection pile provided in other embodiments of the utility model. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] It should be understood that the embodiments set forth below represent the necessary information to enable those skilled in the art to implement the embodiments and illustrate the best mode for implementing the embodiments. After reading the following description in light of the accompanying drawings, those skilled in the art will understand the concepts of the present disclosure and will recognize applications of these concepts not specifically mentioned herein. It should be understood that these concepts and applications fall within the scope of the present disclosure and the appended claims.

[0032] It should also be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, the first element may be referred to as the second element, and similarly, the second element may be referred to as the first element without departing from the scope of the present disclosure. As used herein, the term "and / or" includes any and all combinations of one or more related listed items.

[0033] It should also be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element, or intervening elements may be present. Conversely, when an element is referred to as being "directly connected" or "directly coupled" to another element, there are no intervening elements.

[0034] It should also be understood that the terms "upper", "lower", "left", "right", "front", "back", "bottom", "middle", "middle", "top", etc. may be used herein to describe various elements, and the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore these elements should not be limited by these terms.

[0035] These terms are only used to distinguish one element from another element. For example, a first element can be referred to as an "upper" element, and similarly, a second element can be referred to as an "upper" element according to the relative orientation of these elements without departing from the scope of the present disclosure.

[0036] It is further understood that the terms “comprises,” “includes,” “including” and / or “comprising” when used herein specify the presence of stated features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof.

[0037] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present disclosure belongs. It will be further understood that the terms used herein should be interpreted as having a meaning consistent with their meaning in the context of this specification and the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined as such herein.

[0038] In one embodiment, a method is provided as follows Figure 1 The wireless pole vibration sensor system shown includes: a vibration detection pole, a receiving end, and a control center. In this embodiment, it is assumed that the wireless pole vibration sensor system includes a control center. It is easy to understand that since the main function of the control center is to record and process collision data, it does not involve the collection and transmission of collision data in the driving training field. Therefore, in other embodiments, the wireless pole vibration sensor system may not include a control center but only consist of a vibration detection pole and a receiving end.

[0039] The vibration detection pile pole needs to complete the collision detection between the vehicle and the pile pole, so it needs to include a vibration sensor. In this embodiment, a three-axis acceleration sensor is preferably used, which can detect collisions in any direction and improve the detection accuracy of the collision between the vehicle and the pile pole. The collection, transmission and management of data all need to be uniformly controlled, so the vibration detection pile pole also includes a pile pole controller. In this embodiment, a 32-bit low-power single-chip microcomputer is preferably used as the pile pole controller.

[0040] In order to improve the scalability and reliability of the pole collision detection system currently used in the driving test training, the utility model arranges a vibration detection pole installed on the driving test training site to be connected to the receiving end in a wireless manner, so each vibration detection pole also includes a wireless communication module, which is wirelessly connected to the corresponding receiving end through the wireless communication module.

[0041] Since wireless communication with the vibration detection pole is to be realized, the receiving end also includes a wireless communication module. The wireless communication module of the receiving end and the wireless communication module of the vibration detection pole perform wireless data transmission to realize the wireless connection between the vibration detection pole and the receiving end. Figure 1 As shown, a receiving end can be responsible for receiving the reported data detected by the vibration sensors in all vibration detection poles within its wireless coverage range, and converting it into network UDP protocol data through the network port, that is, user datagram protocol data, and then transmitting it to the main control room via Ethernet. Each receiving end can be responsible for receiving multiple vibration detection poles. Without exceeding the coverage range of the receiving end, it can be responsible for receiving up to 100 vibration detection poles. If it exceeds the coverage range of the receiving end, another receiving end can be added as a relay or grouping. This embodiment takes the assessment and training site of each driving test training subject as a specific site scenario, such as taking the assessment and training site of each reversing into the warehouse as Figure 1 In a site, since the number of vibration detection poles required in a site is generally no more than 100, a receiving end is set in each site to receive data of each vibration detection pole in the site.

[0042] Based on the long-distance wireless connection between the vibration detection pole and the receiving end, the receiving end does not need to be set up inside the assessment and training site, avoiding damage to the connection line caused by vehicle and personnel activities, as well as collision damage to the receiving end itself. At the same time, considering that the number of receiving ends is significantly reduced compared to the vibration detection pole, even if each receiving end is connected to the control center via Ethernet, the use of Ethernet cables is significantly reduced, which significantly reduces the possibility of damage and improves reliability. Therefore, based on this premise, in order to further improve the convenience of power supply for the receiving end and reduce subsequent maintenance costs, the receiving end is connected to the control center via Ethernet, and at the same time, the receiving end is set to use standard 48V POE power supply, that is, Ethernet cable power supply, and non-standard or standard POE power supply can be used. In this way, there is no need to provide additional power supply lines for the receiving end, giving the receiving end maximum installation freedom during the construction process. As long as the wired network is laid, signal coverage design and installation can be done.

[0043] like Figure 2 As shown, in other embodiments, a block diagram of the overall design principle of the receiving end is given, which uses an RJ45 interface to realize power supply from the Ethernet POE, and outputs voltage to a low-dropout linear regulator, i.e., LDO, through a DC / DC step-down module. The LDO powers a 32-bit low-power MCU as a receiving end controller. The 32-bit low-power MCU as a receiving end controller is peripherally provided with LED indication, reserved I / O interface, serial port ISP and serial port IAP, and controls the connection to a 2.4G wireless networking module as the above-mentioned receiving end wireless communication module.

[0044] like Figure 3 As shown, in other embodiments, a block diagram of the overall design principle of a vibration detection pile rod is provided, and each vibration detection pile rod is an independent individual. This embodiment adopts a domestic 32-bit low-power single-chip microcomputer as a pile rod controller, and determines whether the carrier of the sensor, that is, the vibration detection pile rod, has been rubbed and hit by collecting whether the acceleration change of the three axes of the digital acceleration sensor X, Y, and Z exceeds the threshold value, and reports the vibration / stillness information through the 2.4G wireless networking module which is the wireless communication module of the vibration detection pile rod; at the same time, the single-chip microcomputer samples the voltage value of the battery through the A / D port, and combined with the charging management part of the battery, it can monitor the remaining power of the battery at all times to prevent overcharging, over-discharging, and overheating, thereby protecting the lithium battery and extending its service life.

[0045] During the use of the poles on site, novice trainees may hit the poles due to lack of experience or nervousness. When the vehicle hits the poles, the poles will fall to the ground due to the huge impact force. At this time, if the relevant hardware equipment of the vibration detection poles are at the top of the poles, it is easy for the circuit board to be broken, the shell to be cracked, and other damages to occur. This will directly lead to a high rate of sensor repairs, and the circuit board cannot be repaired after physical damage, and can only be replaced.

[0046] In order to reduce the damage rate of equipment and comprehensively consider the convenience of battery charging and barrier-free transmission of wireless signals, the vibration sensor is designed to be split:

[0047] Figure 3 The first part is external and located at the top of the pole, mainly consisting of a battery compartment and a fixing seat. The battery compartment shell is made of transparent PC material, which is resistant to acid and alkali, high and low temperatures, and has strong impact resistance. The battery compartment can be rotated and removed, and the internal battery is protected by a metal shell, and is powered by a USB-A interface adapter board. The screws of the battery compartment are connected to the fixing seat, which is made of ABS material, which is better than PC material, and uses existing pipe fittings without the need for molds. This not only ensures impact resistance and reduces damage rate, but also has extremely high cost performance, thereby improving economic efficiency.

[0048] Figure 3The second part is built-in, installed in the pipe wall at the top of the pile pole, below the fixed seat; this part is the main body of the circuit equipment structure, and the interior is a logic processing circuit board composed of a 32-bit low-power MCU, a three-axis acceleration sensor, a 2.4G wireless transmission module, an LDO power supply, an AD voltage detection, a logic control, an LED indicator and a basic burning and debugging interface; in order to strengthen the protection of the circuit board, a metal material is specially selected as the shell, and a thoughtful sealing and waterproof treatment is done. The sensor with this metal shell is installed inside the pile pipe for use, forming a double protection with the metal pipe wall of the pile pole, and will not be damaged even in the case of a heavy fall. In actual use, this design can reduce more than 95% of the repairs. Since the metal shell is encapsulated and installed in the metal pipe wall, it is necessary to consider the problem of shielding of wireless signal transmission; this design uses an omnidirectional high-gain copper tube antenna, which is extended to the thread mouth of the fixed seat at the top of the pile pole. The fixed seat is made of ABS material, which basically has no shielding for the wireless signal, ensuring data transmission.

[0049] like Figure 4-1 and Figure 4-2 As shown, in other embodiments, a circuit schematic diagram of a pile pole controller and a schematic diagram of its peripheral circuit structure are provided.

[0050] Figure 4-1 U101 is the main control MCU of the vibration detection pile in this embodiment. It uses the domestic Xiaohua single-chip microcomputer HC32L130F8UA model, which is a 48MHz Cortex-M0+ 32-bit MCU core, with a flexible power management system, ultra-low power performance, and an ultra-wide operating voltage of 1.8V~5.5V, which is very suitable for battery-powered systems. 64K bytes of on-chip Flash, with erase and write protection function, can store running programs and user configuration data, and 8K bytes of RAM can enhance system stability. The model selected this time is QFN32 package, with a size of only 4*4mm, and up to 26 IOs are available, which greatly saves circuit board space while meeting project requirements.

[0051] Figure 4-2 The circuits in the MCU constitute the minimum system for MCU operation, including reset circuit, BOOT mode selection circuit, power supply circuit and ISP programming interface.

[0052] like Figure 5As shown, in other embodiments, a circuit schematic diagram of a three-axis acceleration sensor is provided. Its model is ADXL345, which is a three-axis, digital output acceleration sensor based on iMEMS technology launched by ADI. iMEMS semiconductor technology integrates micro-mechanical structure and electronic circuit on the same chip. The acceleration sensor can measure single-axis, dual-axis or even three-axis acceleration and generate digital output. ADXL345 has a variable measurement range of ±2g, ±4g, ±8g, ±16g, a maximum resolution of 13bit, a fixed sensitivity of 4mg / LSB, a 3mm*5mm*1mm ultra-small package, 40-145uA ultra-low power consumption, a standard I2C or SPI digital interface, a 32-level FIFO storage, and internal multiple motion state detection and flexible interrupt mode and other characteristics. This embodiment is completely based on the motion state detection function and interrupt function inside ADXL345, and does not even need to read the specific value of acceleration in real time and perform complex calculation operations, which can minimize the complexity of the algorithm.

[0053] The three-axis acceleration sensor is connected to the MCU in the above embodiment through the I2C bus. After power-on, it can be initialized and configured. The vibration and stillness of the pile movement state are programmed and mapped to the two interrupt pins INT1 and INT2 respectively. When these two states are detected, the main control MCU is notified to process and report. When the state does not change, the device and the main control MCU are in sleep mode to save battery power.

[0054] like Figure 6 As shown, in other embodiments, a circuit schematic diagram of a wireless communication module is given. Specifically, it is a BLE5.2 MESH networking module, which is master-slave integrated and supports multiple configuration modes. This embodiment uses the MESH networking mode, which supports a 1K Byte transparent transmission rate in the networking state, and the mobile phone will not search for multiple BLE broadcasts during communication, which greatly improves the stability and anti-interference ability. The module supports 10 levels of adjustable transmission power. After adapting the antenna, the transmission distance can reach up to 150 meters. The module also has a relay function. When multiple poles are used in combination, the module automatically networks in groups, and the reported data can be relayed, which can achieve a longer transmission distance. Input and output ports are also reserved during the design. The module is in a low-power sleep state, and the power consumption is as low as 1uA. It is connected to the low-power serial port LPUART0 of the master MCU in the above embodiment through the UART serial port, which can realize that the master can still receive data from the wireless communication module in the sleep state.

[0055] In other embodiments, Figures 7-1 to 7-2 as well as Figures 8 to 10 The power supply system of the vibration detection pile is set as one main and three auxiliary power supply mode, and the circuit schematic diagram is given.

[0056] The main power supply is Figure 7-1 and Figure 7-2 As shown in the figure, the power structure design of the battery-powered mode in the vibration detection pile pole is shown. In order to maximize the battery utilization efficiency and ensure the battery life, the power supply part uses a low-dropout LDO, also known as a low-dropout linear regulator. When the battery voltage is insufficient, it can still output sufficient current to ensure the stable operation of the device.

[0057] like Figure 7-2 As shown, the controllable shutdown circuit specially added is to force shutdown when the battery voltage is lower than the over-discharge value to protect the battery and extend its service life. This function is implemented by the above embodiment as shown in FIG. Figure 4-1 The main control MCU shown in the figure continuously detects the battery power through the AD port, and outputs a control signal to the shutdown circuit to execute the shutdown operation when the condition is met. The specific implementation principle is as follows:

[0058] Automatic startup (power-on) process:

[0059] The battery is placed in the battery compartment of the above embodiment, that is, after the battery is connected, the capacitor C213 is charged through the pull-up resistor R213. Before the voltage across the capacitor C213 reaches the gate threshold voltage of the P-channel field effect transistor Q201, the P-channel field effect transistor Q201 is turned on. At this time, the enable terminal EN is connected to the battery output terminal through Q201 and an enable voltage exists. U201 is enabled to work and converts the battery output terminal voltage connected to the U201 input terminal. The output terminal of U201 outputs a 3.3V voltage, completing the voltage output of the power output terminal of the battery power supply module; the main control MCU is also as shown Figure 4-1 After U101 is powered on, it performs port initialization, controls Q202 to turn on and maintain through the output voltage of port P_EN, and the gate voltage of Q201 is pulled low to maintain the on state. The system works normally and continuously detects the battery power through the AD_BAT port.

[0060] Regarding the AD battery power sampling function of this embodiment, that is, the analog-to-digital conversion battery power sampling function, the sampling circuit is placed at the rear end of the P-channel field effect transistor Q201. The purpose or beneficial effect is that the main control MCU, that is, Figure 4-1 The U101 shown detects battery over-discharge through the battery voltage sampling terminal AD_BAT, that is, the battery voltage is lower than the over-discharge value, and controls Q202 to be cut off through the output voltage of the port P_EN, so that Q201 is cut off (shutdown) by charging the capacitor C213, and the connection between the battery output terminal and the ground terminal is cut off, so as to avoid unnecessary battery power loss caused by continuous sampling of the battery voltage when the battery is over-discharged, thereby improving the energy saving effect.

[0061] Automatic shutdown (power-off) process:

[0062] Port AD_BAT of U101 continuously detects the battery voltage. When the battery voltage is too low, U101 outputs voltage through port P_EN to control transistor Q202 to be cut off, and capacitor C213 is charged through pull-up resistor R213. When the voltage across C213 is greater than the gate threshold of P-channel field effect transistor Q201, Q201 field effect transistor is turned off, thereby turning off the enable of power chip U201 and stopping power output.

[0063] like Figures 8 to 10 The auxiliary power supply is easy to involve in this embodiment. This embodiment can be powered not only by battery but also by wire. The power supply range is 5V~30V, which fully meets the wide voltage requirements of industrial environment. The auxiliary power supply 3 is a boost output power supply. When the system is powered by battery, it can provide power for external sensors. Its main chip U203 adopts a high-efficiency DCDC boost chip, which can provide a maximum current of 3A, which can be well applied to a variety of loads and has a low ripple voltage.

[0064] In other embodiments, Fig.11 As shown, a schematic diagram of the external interface circuit of a vibration detection pile rod is given. In the external interface circuit structure in this embodiment, the CH340N chip produced by Nanjing Qinheng is selected. Its SOP-8 package is small and easy to use, the baud rate is up to 2Mbps, and the cost is low. By adding this external interface circuit, the vibration detection pile rod device can be connected to the computer USB interface through the USB-A port of the external battery during debugging, which not only powers the board, but also can directly communicate through the virtual COM port for command setting and the like.

[0065] The utility model applies wireless communication technology to the pole-circling detection of driving test training. The transmission of pole collision detection data is changed from the original wired method using connecting cables to a wireless method, that is, it is realized through mutual transmission between wireless data transmission modules, which improves the convenience of subsequent renovation and expansion of driving test training sites, that is, improves the scalability; at the same time, the wireless connection method avoids the damage to the line and interface caused by the wired connection, improves the reliability of the system, and the part involving the pole power supply in the system particularly includes a structure that can reduce the battery power loss, thereby improving the energy saving effect.

[0066] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A wireless pile vibration sensor system, characterized in that: The wireless pole vibration sensor system includes at least one vibration detection pole and a receiving end. The vibration detection pole is installed on a driving test training site. The vibration detection pole includes a vibration sensor, a pole controller and a wireless communication module. Each vibration detection pole is wirelessly connected to a corresponding receiving end through the wireless communication module in the vibration detection pole.

2. The wireless pole vibration sensor system according to claim 1, characterized in that: The vibration detection pile pole also includes a battery power supply module, in which the battery output end of the battery power supply module is connected to the enable end through a switch tube, and the enable end controls whether the battery output end is conductive with the power output end of the battery power supply module, and the enable end is the input end of the battery voltage sampling circuit in the battery power supply module, and a battery voltage sampling end is led out between the input end of the battery voltage sampling circuit and the ground end, and the battery voltage sampling end is control-connected to the pile pole controller, and when the sampling voltage of the battery voltage sampling end is lower than the over-discharge value, the pile pole controller controls the switch tube to be cut off through the control end.

3. The wireless pole vibration sensor system according to claim 2, characterized in that: The switch tube is a P-channel field effect tube, the battery output end is connected to the source of the P-channel field effect tube, the enable end is connected to the drain of the P-channel field effect tube, the battery output end is connected to one end of the pull-up resistor, the other end of the pull-up resistor is connected to the gate of the P-channel field effect tube, a capacitor and a transistor are connected in parallel between the other end of the pull-up resistor and the ground end, the base of the transistor is connected to the control end of the pile pole controller, one of the emitter and the collector of the transistor is connected to the ground end, and the other is connected to the other end of the pull-up resistor.

4. The wireless pole vibration sensor system according to claim 2 or 3, characterized in that: The enable end is an enable end of a low voltage drop linear regulator, the battery output end is connected to the input end of the low voltage drop linear regulator, and the output end of the low voltage drop linear regulator is connected to the power output end of the battery power supply module.

5. The wireless pole vibration sensor system according to claim 1, characterized in that: The vibration sensor is a three-axis acceleration sensor, and the input end of the pile rod controller is controllably connected to the output end of the three-axis acceleration sensor.

6. The wireless pole vibration sensor system according to claim 1, characterized in that: The wireless pile pole vibration sensor system also includes a control center, each of the receiving ends is connected to the control center via Ethernet, and the receiving ends are powered by Ethernet.

7. The wireless pole vibration sensor system according to claim 6, characterized in that: The receiving end transmits data to the control center via the User Datagram Protocol.

8. The wireless pole vibration sensor system according to claim 1, characterized in that: The wireless communication module is a wireless mesh network module.

9. The wireless pole vibration sensor system according to claim 2, characterized in that: The vibration detection pile rod also includes a wired power supply module.

10. The wireless pole vibration sensor system according to claim 1, characterized in that: The pile pole controller is a 32-bit low-power single-chip microcomputer.

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