门禁系统是在智能建筑领域，意为Access Control System，简称ACS。指“门”的禁止权限，是对“门"的戒备防范。这里的“门”，广义来说，包括能够通行的各种通道，包括人通行的门，车辆通行的门等。因此，门禁就包括了车辆门禁。在车场管理应用中，车辆门禁是车辆管理的一种重要手段，不以收取停车费为目的，主要是管理车辆进出权限。

Access control system is in the field of intelligent building, meaning Access Control System, or ACS. The prohibition of "gate" is the precaution against "gate". The "door" here, in a broad sense, includes all kinds of passages that can be accessed, including the door for people, the door for vehicles and so on. Therefore, access control includes vehicle access control. Vehicle entrance guard is an important means of vehicle management in the application of parking yard management. It is not for the purpose of charging parking fees, but mainly for the management of vehicle access rights.

出入口门禁安全管理系统是新型现代化安全管理系统，它集微机自动识别技术和现代安全管理措施为一体，它涉及电子，机械，光学，计算机技术，通讯技术，生物技术等诸多新技术。它是解决重要部门出入口实现安全防范管理的有效措施。适用各种机要部门，如银行、宾馆、车场管理、机房、军械库、机要室、办公间，智能化小区，工厂等。

Entry and exit security management system is a new type of modern security management system. It integrates microcomputer automatic identification technology with modern security management measures. It involves many new technologies, such as electronics, machinery, optics, computer technology, communication technology, biotechnology and so on. It is an effective measure to solve the problems of important departments' entry and exit. Applicable to all kinds of key departments, such as banks, hotels, garage management, machine room, armory, machine room, office, intelligent residential areas, factories and so on.

门禁系统早已超越了单纯的门道及钥匙管理，它已经逐渐发展成为一套完整的出入管理系统。它在工作环境安全、人事考勤管理等行政管理工作中发挥着较大的作用。

The access control system has already surpassed the simple doorway and key management, it has gradually developed into a complete access management system. It plays an important role in the work environment safety, personnel attendance management and other administrative management work.