[0022] In order to make the objects, technical solutions, and advantages of the present invention, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are merely embodiments of the invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained without making creative labor without making creative labor, in the premise of creative labor. The current test apparatus of the present invention will be described in detail below with reference to the accompanying drawings.
[0023] like Figure 1-5 As shown, four wireless sensor nodes are installed in each lifting platform of the intelligent stereo garage, and the four wireless sensor nodes build a flat four-membered array, such as figure 1 Indicated. Four wireless sensor nodes transmitted the collected sound to the host computer, the host machine uses a sound source positioning method to determine the position and status of the car engine.
[0024] Wireless sensor node hardware is shown in the design of the present invention figure 2 As shown, it is mainly composed of a microphone 2, a sensor interface 3, antenna 4, an MCU (single-chip microcomputer) processing unit, and the radio frequency module 5 and the cantilever beam power generating device 6. Rain and snow weather car is easy to bring water into the garage, so the wireless sensor housing uses a waterproof junction box. Since the MCU (single-chip microcomputer) processing unit and the radio frequency module 5 and the voltage required by the microphone 2 are different, we add a boost rectifying circuit on the cantilever beam power generating device 6 to boost the input voltage and rectify the required voltage. The MCU (single-chip microcomputer) processing unit and the radio frequency module 5 and the microphone 2 are supplied, and the radio frequency module and the sound sensor are connected together using the sensor interface 3. All devices are fixed in the waterproof junction box with a rubber snapshot, and the wireless sensor node is assembled.
[0025] Install four wireless sensor nodes in each lifting platform in the smart stereo garage. Mounting the 1 fastening screw using the outer casing in the lifting platform, according to figure 1 The first wireless sensor node is installed at the front end of the lifting platform, and the first wireless sensor node is installed at the left end of 1000 mm. The second wireless sensor node is installed at the front end of the lifting platform, and the second wireless sensor node is installed at the left end of 1000 mm. The front end of the distance lifting platform is 2500. MM, install the third wireless sensor node from the left end 1000mm, 1500 mm from the front end of the lifting platform, and the fourth wireless sensor node is installed from the left end 2000 mm, and the four wireless sensor nodes are constructed into a flat four-dimensional array. The upper machine utilizes the sound source positioning method of the flat four array to determine the status and position of the automobile engine. At the front end of the lifting platform, the cluster head node is installed at the left end 1000 mm to collect the signal emitted by the wireless sensor node.
[0026] like image 3 Indicated. Self-organized cluster networks include sensor detection nodes, cluster head nodes, and SINK nodes. Install a gathering SINK node at the appropriate location of the main control room. Converging the SINK node collects signals from the cluster head nodes of each lifting platform, pass the data to the host computer via 4G network card. When the vehicle enters the garage, after the driver of the three-dimensional garage is getting off, the wireless sensor node is transmitted to the cluster head node, and the cluster head node processes the information and forwards to the SINK node. The host machine determines the source position of the sound and the data of the data and the data of the data (the idle vehicle sound data detected in the experiment site), it is determined that the car is a flameout state or an idle state. . Using a cluster head node can do one person to monitor multiple import and exports, solving each import and export requires a duty-duty task, which effectively reduces duty personnel.
[0027] Wireless sensor network communication is affected by many factors, in order to ensure full transmission of packets, there must be a method to determine if the packet is transmitted successfully. The parking system detects that the driver gets the sensor node starts collecting sound, and the detection point is collected to send data. Reissue can be detected and capable of performing data in the case where the data packet is sent. The sensor detection point sends a packet to the cluster head node, and the cluster head node then sends the data to the SINK node, waiting for the status report of the SINK node. If you receive a affirmative answer (ACK) of the SINK node, this time the packet is successful. If the node does not receive a sure answer, it is considered that the data transfer fails. Until the host computer determines that the car flashed stopped data upload. Automatic response mechanism Figure 5 Indicated.
[0028]The lifting platform is vibrating during the storage vehicle, and the present invention uses a piezoelectric vibration energy collector to convert the vibration machine generated by the lifting platform to electrical energy.The piezoelectric vibrating energy collecting device deforms electric energy through the piezoelectric material in the vibration, providing a power source for the wireless network node.Piezoelectric cantilever beam structure Figure 4.The 8 piezoelectric material is pasted on the cantilever (the piezoelectric material is divided into the upper half of the piezoelectric material and the lower half of the piezoelectric material, and the total part of the piezoelectric material is in a rectangular square) adhesive in 7 piezoelectric ceramic chromium titanate (PZT) at 7On the cantilever beam, and paste a 9-quality block on the right end to increase the deformation of the suspension arm.The 6 piezoelectric cantilever beam power generation device is mounted inside the wireless sensor node.
[0029] The above is merely preferred embodiments of the present invention, so equivalent variations or modifications to the construction, features and principles described in the scope of the invention, are included in the scope of the invention.
