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1. What happens when you use the fingerprint attendance machine under the sun or outdoors? How to prevent it?
A: The working temperature of the attendance machine is 0oC~60oC, but if it is used under the sun for a long time or outside, the fingerprint device will be affected, the reaction may be slower, and the pass rate will be reduced. If the user's attendance machine is installed to work in such an environment, you can put a parasol on the attendance machine to prevent it, or move the attendance machine to indoor use.
2. If the user's finger is pressed up to appear someone else's job number, how to explain it?
A: The false recognition rate of fingerprint recognition is less than 0.0001%, so the probability of this phenomenon is very small. If this happens, it may be because the fingerprint features registered by the employee with the wrong job number are too small, or the fingerprint registration quality is poor. You should delete the fingerprint that often shows the wrong number and re-register another finger.
3, fingerprints often do not identify the user, how to solve the problem?
A: Some of the following situations may cause some employees to use or not use fingerprints for attendance:
1 finger has no fingerprint;
2 There are too many folds on the fingers, which often change;
3 The user who has severe peeling on the finger and whose fingerprint cannot be identified can delete the fingerprint and re-register, or register another finger. When registering fingerprints, such users need to choose to use better quality fingerprints (less wrinkles, no skin, clear fingerprints), try to make the finger touch the fingerprint collection head area larger, and do a comparison test after registration is completed; Register a few more backup fingers. In addition, our attendance machine provides fingerprint and password functions for this purpose, and these employees can be set to use the password for attendance.
4. If the user's finger is not responding or sensitive on the attendance machine, what is the reason, how to solve it?
A: The following reasons may cause this situation:
1 The fingerprint of the user's hand is not clear. Users in this situation can register a few more fingers for backup; attendance
When verifying the fingerprint, try to flatten the fingerprint and use a little force.
2 The fingerprint collection head is not clean (stained) or incomplete (scratched). At this time, the collection head needs to be cleaned.
Or replace the fingerprint collection head prism.
3 The finger is too dry, the collector can't detect the finger, and the finger can be moistened with water. You can wipe your forehead with your finger first.
5. When the attendance machine can't communicate, what are the reasons?
A: The possible reasons are:
1 The communication port is not set correctly. The communication port selected for connection is not the actual COM port used.
2 The communication port baud rate of the computer is different from the baud rate setting of the attendance machine.
3 The attendance machine is not connected to the power supply or is not connected to the computer; 4 The attendance machine is connected but not turned on.
5 The connected terminal number is incorrect. 6 data lines or converters cannot communicate.
7 The COM port of the computer is broken.
6. After the attendance machine is turned on, it will repeatedly display “Please press (leave) your finger!â€, what is the problem? How should it be solved?
A: The reason for this problem may be:
1 After using for a long time, the surface of the collecting head becomes unclean or scratched, which will cause the collecting head to mistakenly believe that the surface has a finger and cannot pass, so this problem occurs.
In this case, you can use alcohol to clean the fingerprint collection head or use a tape to paste the dirt on the surface of the collection head.
2 The connection of the fingerprint collection head is loose or loose.
3 motherboard chip is broken. If there are two reasons for items 2 and 3, you need to contact the supplier to apply for warranty.
7. When operating in the terminal management, the time and acquisition status of the attendance machine, as well as the reading of the fingerprint and password data are all successfully read, but when the attendance record is read, the failure or the middle of the error is indicated. How to solve it?
A: This situation may be related to the data cable, or the converter, or the COM port of the computer. In this case, you can reduce the communication baud rate between the attendance machine and the computer. For example, set it to 19200 or 9600 and then read it.
8. Why can't 485 communicate?
Answer: Because there may be errors in the transmission and reception frequency between different computers and 485 converters, it is recommended to use the 38400 baud rate set by the machine to communicate, there will be no abnormal 485 communication.
Source: Internet
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