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How to choose the access control remote control (9 Raiders)

43 Published by xia, Crystal 11月 26,2018

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The access control remote control is widely used in residential railings, retractable doors, gates and garage doors. The remote control generally has a maximum distance of up to 150 meters, small size, simple operation and very practical. Then, in the face of the variety of access control remote control products on the market, how do we buy the access control remote control? The following are 9 raiders for how to choose the access control remote control for everyone!

门禁遥控器应用

Recommendation 1: Choose an access controller with anti-crash and self-test circuit design.

If the access controller crashes, it will make the user unable to open the door or close the door, which will bring great inconvenience to the customer, and also increase the maintenance and maintenance cost of the engineer. The access controller must be equipped with a reset chip or a CPU with a reset function. Generally, the CPU of the 51 series does not have a reset function, and a reset chip needs to be added. At the same time, it must have a self-test function. If the circuit crashes due to interference or abnormal conditions, the system can self-test and self-start in an instant.

Recommendation 2: Access controller with three-level lightning protection circuit design.

Since the communication line of the access controller is distributed and vulnerable to inductive lightning, the access controller must be designed for lightning protection. We recommend a three-level lightning protection design, first discharge the high current and high voltage generated by the lightning strike through the discharge tube, clamp the current and voltage into the circuit through the inductor and the resistance circuit, and then pass the residual current through the TVS high-speed discharge tube. And the voltage is released at high speed before it damages the circuit. The lightning protection index requires 4000V induction lightning for 50 consecutive times without damage to the equipment. The lightning protection index is high, and the anti-surge and anti-static ability of the equipment will be correspondingly high. Some products advertise that they also have 1500V lightning protection capability. In fact, this indicator is available on all chips, and does not have the ability to prevent lightning strikes and surges.

Recommendation 3: The storage capacity of the registration card should be large, and the storage capacity of the offline recording should be large enough. The storage chip needs to use a non-volatile memory chip.

It is recommended that the registration card permission should reach 20,000, and the offline storage record should reach 100,000, which is suitable for most customers’ storage capacity requirements, and is convenient for attendance statistics. Be sure to use non-volatile memory chips such as Flash. Power loss or shock information will not be lost. If the RAM+ battery mode is used, if the battery is dead or loose, or if the current impact information is lost, the access control system may fail.

Recommendation 4: The design of the communication circuit should have a self-test function, which is suitable for the needs of large system networking.

The networking of access controllers is usually networked using the 485 industrial bus structure. Usually, many manufacturers choose max 485 487 or 1487 chips for cost savings. These chips have weak load capacity, usually the maximum load capacity is 32 devices, and if there is any bus A communication chip damage can affect the communication of the entire communication line, and it is impossible to find out which controller chip is damaged. We recommend using a high-end communication chip and integrated circuit similar to max3080. This circuit has a self-test function. If the chip is damaged, the system will automatically disconnect its connection, so that the control devices on other buses can communicate normally.

Recommendation 5: The application should be simple and practical, easy to operate.

If the application control program is applied, it will undoubtedly increase the cost and time for the training of the project to the customer. The customer is not easy to master the operation of the software and will be angered by the service attitude of the engineering company, which will have a bad influence on the collection and renewal. If the customer does not understand the software, it is easy to cause misoperation, resulting in practical inconvenience. Therefore, we recommend that the engineering company choose the access controller when it is necessary to pay attention to whether the operation of the software is simple and intuitive, convenient, and one-sided emphasis on powerful is not suitable for promotion.

Recommendation 6: It is advisable to use a relay with a well-known brand of high power and current feedback protection at the output.

The output of the access controller is controlled by a relay. When the controller is working, the relay should be opened and closed frequently, and an instantaneous current is passed every time it is opened and closed. If the relay capacity is too small, the instantaneous current may exceed the capacity of the relay and will quickly damage the relay. In general, the relay capacity should be more than 3 times the peak current of the electric lock. It is recommended to use a relay with a rated working current of 7A. The output terminal is usually an inductive device with a large current such as an electric lock. The instantaneous on-off will generate the impact of the feedback current, so the output terminal should be protected by components such as varistor or reverse diode.

Recommendation 7: The reader input circuit needs to be protected against surge and mis-connection protection.

When the construction company is constructing, it is often electrified for wiring or debugging. It may be accidentally negligent, connected to the wrong card reader or accidentally caused a local short circuit. If there is no anti-surge and anti-missing protection, it is easy to burn the central processing chip, causing the whole controller to be damaged and need to be sent back to the factory for repair, which may delay the construction period and increase the construction cost. Good protection can prevent the circuit from being burned even if the power is connected to the data terminal of the reader. The anti-surge dynamic voltage protection can avoid the normal operation of the controller due to the quality problem of the reader.

Recommendation 8: It is recommended that the engineering manufacturer find the controller manufacturer or the manufacturer-designated agent to purchase.

Only by directly looking for manufacturers or manufacturers to specify the purchase of the equipment is possible or perfect technical services, perfect after-sales service is guaranteed, and has a reliable follow-up research and development capabilities to ensure product continuity and advancement. Buying controllers from other sources may have lower prices, but technical support and after-sales service may not be enough.

Recommendation 9: Manufacturers need to provide authoritative quality certification.

Manufacturers need to provide authoritative ISO9001 quality certification and product inspection reports from government quality regulators. And pay attention to verify the authenticity of these documents. The quality of the products that have the corresponding third-party certification and supervision will be guaranteed.

Remote Technology, focusing on remote control launch for 13 years of R&D and manufacturing, support program customization, free one-week proofing shipment, short delivery, one-year warranty, lifetime maintenance, wireless remote control products are widely used in remote control electric windows and doors, garage doors And telescopic doors; remote control lights, communications, switches and security, etc., professional supporting garage door factory, GPS factory, electric control lock factory, security factory, automobile factory, gateway and electric windows and doors.

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