Development process of plug-in card power switch

The development process of power take-off switch is synchronous with hotel lock, because it needs a door-opening card to get power, so the power take-off switch must match the type of door-opening card of hotel lock.

1), mechanical power switch: The early power switch is actually a mechanical rocker switch, which connects two contacts of the power supply by inserting a key card. In this way, when the guest leaves the room, the contacts are disconnected, the power supply of the room is cut off, and the key card is taken out. Hotel guests who are familiar with this principle can sometimes get electricity by inserting a hard object like a key card, such as a comb, so the safety and energy saving of electricity cannot be fundamentally solved. It has almost been eliminated at present.

2) Photoelectric switch: With the appearance of magnetic card hotel lock, only one magnetic card is needed to open the door to get electricity, and the photoelectric switch appears. Its principle is that a pair of infrared rays are turned on or off through the card, and the control circuit detects the turn-on and turn-off of infrared rays, and outputs power through the relay. The power switch of this principle is also called universal power switch. There are still a few hotels using it.

3) IC card power switch: it is mainly suitable for supplying power through contact IC card, and mainly detects the chip pin of IC card to judge whether the card is inserted or not, and whether the IC card is inserted into the output power supply. At present, the market share is also relatively small.

4) Low-frequency card power switch: it is suitable for 125KHz contactless induction cards, such as EM, TEMIC, TI and other induction cards, and mainly detects whether the card frequency meets the 125KHz output power supply. At present, the market share is relatively large.

5) High-frequency card power switch: it is mainly suitable for 13.56MHz high-frequency induction cards, such as S70 and S50 of MIFARE and Fudan card made in China. , and output power by identifying whether the ID of these cards meets the standard. It is widely used in the market at present.

The above five types are all used to identify the types of door opening cards.

6) Identify the room number type power switch: it is one of the special switches for special cards. By reading the room address data in the door-opening card, compare whether it is the card output power supply of this room. A few hotels use it. You need to share the card data with the hotel lock.

7) Identify the time power switch: it is one of the special switches for special cards. It outputs power by reading the room address and time data in the door-opening card, and compares whether it is a card within the effective time of the room. A few hotels use it. You need to share the card data with the hotel lock.

8) Network-type power switch: the data such as the permission type and time of the door opening card are read and uploaded to the guest control system, and the guest control system executes the power consumption status of the guest room. High-star hotels use it more. Need to share card data and transmission protocol with hotel lock and guest control system.