Smart parking is one of the development priorities of smart cities, and many advanced countries have introduced them. Recently, under the active promotion of the Zhitong Institute and the production and promotion office, the time-consuming and fuel-intensive search for parking spaces is expected to be greatly improved. Smart parking consists of LoRa's parking sensor, Bluetooth Beacon, and mobile app, which can effectively guide users to quickly find parking spaces.
According to the Ministry of Industry and Commerce, the self-use passenger car is about 17 minutes a day to find parking spaces in the workplace and near the home. In addition to wasting time and fuel costs, the exhaust gas emitted by the engine causes air pollution. At present, the roadside parking spaces of all counties and cities in Taiwan are estimated to be at least 200,000 squares, but the county and city governments are generally unable to monitor the use of roadside parking spaces in real time, let alone guide users to quickly find parking spaces, resulting in the utilization of roadside parking spaces. Uneven.
The Ministry of Industry and Technology and the Kaohsiung City Government Transportation Bureau recently promoted the LoRa heterogeneous network outdoor intelligent parking guidance demonstration application. The system integration company has set up and tested the vehicle sensing device in some roadside parking spaces in Kaohsiung City. . In the future, people can use mobile devices to check the real-time usage information of on-street parking spaces at any time, which can shorten the driver's time to find parking spaces, save fuel and reduce carbon emissions.
In addition, in the medium and large parking lots at this stage, the owners often find time to consume empty space in order to find empty parking spaces. When the owner returns to the parking lot to pick up the car, the vehicle is often not found. Launched by the Institute, the X-Parking Smart Parking Guidance Solution, which won the APICTA Awards Communication Application Award (Merit) this year, uses precise positioning dynamic navigation technology to solve this problem.
According to the strategy, Zhitong said that the solution is positioned by Beacon and Bluetooth smart sensor, and integrates components such as magnetometers, accelerometers and gyroscopes to develop pedestrian heading estimation (PDR) technology. Then adjust the software with Beacon to achieve accurate positioning of the grade.
The navigation part, through the combination of road network design and real-time path planning navigation engine, uses less computing resources, so that the mobile phone can quickly map the best path in real time without networking. Through the guidance of the mobile app, users can also quickly find their own vehicles in the parking lot, and also find the empty parking space nearest to themselves.
According to the policy plan, Zhitong said that the solution has been introduced into the underground parking lot of Banqiao Station, and it is very concerned by the parking lot operators at home and abroad. It will be introduced into other parking lots in northern and central Taiwan in the future.
Speakers are one of the most common output devices used with computer systems. Some speakers are designed to work specifically with computers, while others can be hooked up to any type of sound system. Regardless of their design, the purpose of speakers is to produce audio output that can be heard by the listener.
Speakers are transducers that convert electromagnetic waves into sound waves. The speakers receive audio input from a device such as a computer or an audio receiver. This input may be either in analog or digital form. Analog speakers simply amplify the analog electromagnetic waves into sound waves. Since sound waves are produced in analog form, digital speakers must first convert the digital input to an analog signal, then generate the sound waves.
The sound produced by speakers is defined by frequency and amplitude. The frequency determines how high or low the pitch of the sound is. For example, a soprano singer's voice produces high frequency sound waves, while a bass guitar or kick drum generates sounds in the low frequency range. A speaker system's ability to accurately reproduce sound frequencies is a good indicator of how clear the audio will be. Many speakers include multiple speaker cones for different frequency ranges, which helps produce more accurate sounds for each range. Two-way speakers typically have a tweeter and a mid-range speaker, while three-way speakers have a tweeter, mid-range speaker, and subwoofer.
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