Touch Panel, also known as “touch screen” or “touch panel”, is a sensor that receives input signals such as contacts. When the user touches the graphic buttons on the screen, the tactile feedback system on the screen will be driven according to the pre-programmed program to achieve a variety of linking devices to achieve a variety of operations. Touch screen has the characteristics of simple operation and flexible use, and has been widely used in cell phones, tablet PCs, retail, public information query, multimedia information systems, medical instruments, industrial automation, entertainment and catering, automated ticketing systems, education systems and many other fields.
There are more types of touch screen, mainly including the following:
1. resistive technology touch screen: by pressing the inner contact up and down connected, accurate positioning but higher prices, and afraid of scratching and easy to damage.
2. capacitive technology touch screen: the design concept is reasonable, but the image distortion problem is difficult to get a fundamental solution.
3. infrared technology touch screen: installed in front of the monitor, a circuit board frame, the circuit board in the screen on all sides of the infrared emitting tube and infrared receiving tube, the formation of horizontal and vertical cross infrared matrix. When the user touches the screen, the finger will block the location of the horizontal and vertical two infrared, thus determining the location of the touch point in the screen. This touch screen is inexpensive, but the outer frame is fragile, prone to light interference, curved surface case will be distorted.
4. Surface acoustic wave touch screen: to solve the various defects of the previous touch screen, clear and not easy to be damaged, suitable for a variety of occasions, but water droplets and dust will make the touch screen becomes sluggish, and even can not work.
Public Transportation (Public Transportation) refers to all modes of transportation that are open to the public and provide transportation services, usually as a commercial service for payment, but there are a few free exceptions. A public transportation system consists of physical elements such as access roads, vehicles, and station facilities. Broadly speaking, public transportation includes civil aviation, railroads, highways, waterways and other modes of transportation; narrowly speaking, public transportation refers to buses and railways, ferries, ropeways and other modes of transportation operating on fixed routes within a city. Public transportation is an important infrastructure of a city, and its level of development directly affects the convenience and happiness of citizens' travel.
The application of touch screen technology in public transportation system is mainly reflected in the following aspects:
1. Real-time bus and subway information display: the display can be used to show real-time bus and subway information, including the arrival time of the vehicle or train, route map, station information and so on. Passengers can touch the screen to inquire about the desired bus or subway line information and understand the real-time vehicle dynamics.
2. Route planning and navigation: Users can search for route planning and navigation functions through the touch screen to help passengers find the best travel route. Passengers can enter the destination information, the system will be based on real-time traffic conditions and public transportation routes to plan the optimal travel plan, and displayed on the map for passengers to reference.
3. Station navigation and service facilities query: the touch screen has a station navigation function, which helps passengers to quickly find the location of each station and entrance/exit. In addition, passengers can also query the service facilities around the station, such as restaurants, stores, ATMs, etc., in order to obtain the required services during the trip.
Touch panels are increasingly used in public transportation systems, providing passengers with a convenient and intuitive interactive experience. In order to ensure that touchscreens operate effectively in public transportation systems and meet passenger needs, they need to have the following key properties:
1. Interactivity and ease of use
Touch sensitivity: The touch screen should have good touch sensitivity to ensure that passengers can easily and quickly query the required information.
User-friendly interface: The interface design should be simple and clear, easy to understand, and convenient for passengers of different ages and cultural backgrounds.
2. Durability and Stability
Anti-scratch and wear-resistant: Due to the high flow of people in the public transportation system, the surface of the touch screen should be able to withstand frequent touches and scratches to maintain long-term clarity.
Waterproof and dustproof: The touch screen used in outdoor or humid environment should have waterproof and dustproof function to ensure that it can still work normally in bad weather conditions.
Stable operation: The touch screen system should have good stability to avoid interruptions or errors in information display due to faults or software problems.
3. Security and privacy protection
Privacy protection: Combine the privacy filter with the touch screen, by restricting the viewing angle of the screen, only the front viewer can see the screen content, which effectively prevents side peeping, avoids information leakage, improves the overall security, and thus protects the user's privacy.
4. Low power consumption and environmental protection
Energy-saving design: The touch screen should be designed with low power consumption to reduce energy consumption and lower operating costs.
Environmentally friendly materials: Use environmentally friendly materials in the manufacturing process to reduce the impact on the environment.
5. Vandal-proof
In the field of public transportation, due to the crowd density and high risk of collision, the traditional touch screen may not be able to meet the requirements of safety and durability. Therefore, vandal-proof touch screens have emerged. The application of vandal-proof touchscreens can protect touchscreen devices such as ticket machines and self-service inquiry devices from the risk of accidental impact and rupture, and ensure normal operation, thus improving the efficiency and convenience of public transportation systems.