CN109427108B - Anti-cheating fingerprint attendance machine control method - Google Patents

Anti-cheating fingerprint attendance machine control method Download PDF

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Publication number
CN109427108B
CN109427108B CN201710717366.4A CN201710717366A CN109427108B CN 109427108 B CN109427108 B CN 109427108B CN 201710717366 A CN201710717366 A CN 201710717366A CN 109427108 B CN109427108 B CN 109427108B
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Prior art keywords
attendance
finger
temperature
fingerprint
temperature sensor
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Expired - Fee Related
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CN201710717366.4A
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CN109427108A (en
Inventor
林丁棣
陈琪锋
孙铿锵
余晓杰
林健
钟良
孙晓来
谢珺珺
黄长克
郑成章
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Zhejiang Chuangli Electronics Co Ltd
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Zhejiang Chuangli Electronics Co Ltd
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    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C1/00—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people
    • G07C1/10—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people together with the recording, indicating or registering of other data, e.g. of signs of identity
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/12—Fingerprints or palmprints
    • G06V40/13—Sensors therefor
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/40—Spoof detection, e.g. liveness detection

Abstract

The anti-cheating fingerprint attendance machine control method includes setting environment temperature sensor on the casing, setting finger temperature sensor on the fingerprint collector collecting window of the attendance machine, setting environment temperature correcting value and temperature threshold value, fingerprint collecting and collecting environment temperature and finger temperature, checking the data in the memory with the attendance machine controller, and sending the information to the attendance manager to confirm the truth of the attendance information. The anti-cheating fingerprint attendance machine control method utilizes the characteristic that most silica gel is not heat-conducting, and identifies suspected silica gel finger-die attendance information in a mode of detecting the finger temperature of staff during attendance so as to facilitate checking of attendance management staff, has low false alarm rate, does not obviously increase the labor intensity of the attendance management staff, can identify the attendance checking-on-behalf phenomenon to a certain extent, and ensures the attendance effect.

Description

Anti-cheating fingerprint attendance machine control method
Technical Field
The invention relates to an attendance machine, in particular to a fingerprint attendance machine control method.
Background
The attendance checking equipment is used for checking the attendance time and attendance rate of the staff by enterprises, and can improve the time concept of the staff and improve the working efficiency. Most of the existing attendance machines are divided into fingerprint, card punching, face identification, pupil identification and the like; generally, in order to avoid the employee from checking the card to a certain extent, and when the attendance cost is not increased, a fingerprint attendance machine is mostly selected for attendance checking.
The key of the fingerprint attendance machine sold in the market at present is a small laser scanner, the laser scanner on the fingerprint attendance machine scans not a finger but an indentation formed when the finger is contacted with a scanning window, and no matter the attendance machine adopts blue laser or red laser, an image obtained by scanning is transmitted to an arithmetic circuit in a black-white two-color format; therefore, in order to cheat the fingerprint collector, a plurality of employees usually adopt plasticine to manufacture a mold, then the mold is inserted into the silica gel sleeve to obtain the simulated fingerprint, the existing attendance machine basically cannot identify the silica gel finger sleeve, and the attendance effect is seriously influenced.
The prior art chinese patent CN104464009A discloses an attendance system based on fingerprint identification, which measures the actual body temperature of each employee, and aims to monitor the physical condition of the employee, but does not have the function of monitoring false attendance.
Disclosure of Invention
The invention aims to solve the technical problem of providing a control method of an anti-cheating fingerprint attendance machine, which utilizes the characteristic that most silica gel is not heat-conducting, identifies suspected silica gel finger-mode attendance information by detecting the finger temperature of staff during attendance so as to facilitate the checking of attendance management staff, has low false alarm rate, does not obviously increase the labor intensity of the attendance management staff, can identify the attendance-checking-on-behalf phenomenon to a certain extent, and ensures the attendance effect.
The invention is realized by the following steps: an anti-cheating fingerprint attendance machine control method is characterized in that an environment temperature sensor is arranged on a shell of the attendance machine, a finger temperature sensor is arranged on an acquisition window of a fingerprint acquirer of the attendance machine, and a set environment temperature correction value T is setThreshold 1And a temperature threshold TThreshold 2Then, the method comprises the following steps:
s1, when the fingerprint collector collects fingerprints, the environment temperature T is collected through the environment temperature sensor and the finger temperature sensor1And finger temperature T2Will beThe serial number of the employee is sent to a memory after corresponding to the acquired environment temperature and the finger temperature one by one;
s2, after attendance at a certain attendance period is finished, extracting data in the memory by the attendance machine controller and verifying the data by using the formulas 1 and 2;
Figure GDA0001442669300000021
(T2i-T1i)≤Tthreshold 1 (2)
In the formula (I), the compound is shown in the specification,
Figure GDA0001442669300000022
the average value of the finger temperatures of all the employees in a certain attendance checking period is obtained;
T1ithe temperature value is the environmental temperature value of the ith employee during attendance checking;
T2ithe finger temperature value of the ith employee during attendance checking;
and S3, when the formulas 1 and 2 are met simultaneously, the attendance machine controller marks the attendance information of the employee in a key manner and sends the attendance information to an attendance manager, and the attendance manager performs manual observation on the employee to confirm the authenticity of the attendance information of the employee.
The acquisition point of the finger temperature sensor is arranged at the center of the acquisition window.
The finger temperature sensor is an infrared temperature sensor.
The ambient temperature correction value TThreshold 1At 5 ℃, the temperature threshold value TThreshold 2Is 3 ℃.
The anti-cheating fingerprint attendance machine control method utilizes the characteristic that most silica gel is not heat-conducting, and identifies suspected silica gel finger-die attendance information in a mode of detecting the finger temperature of staff during attendance so as to facilitate checking of attendance management staff, has low false alarm rate, does not obviously increase the labor intensity of the attendance management staff, can identify the attendance checking-on-behalf phenomenon to a certain extent, and ensures the attendance effect.
Drawings
Fig. 1 is a schematic position diagram of necessary accessories of an attendance machine used in the anti-cheating fingerprint attendance machine control method;
in the figure: 1 ambient temperature sensor, 2 acquisition windows, 3 finger temperature sensors.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications can be made by one skilled in the art after reading the description of the present invention, and equivalents fall within the scope of the invention defined by the appended claims.
Example 1
As shown in figure 1, an anti-cheating fingerprint attendance machine control method comprises the steps that an ambient temperature sensor 1 is arranged on a shell of the attendance machine, a finger temperature sensor 3 is arranged on an acquisition window 2 of a fingerprint acquirer of the attendance machine, and a set ambient temperature correction value T is setThreshold 1And a temperature threshold TThreshold 2Then, the method comprises the following steps:
s1, when the fingerprint collector collects fingerprints, the environment temperature T is collected through the environment temperature sensor 1 and the finger temperature sensor 3 at the same time1And finger temperature T2The serial number of the employee is sent to a memory after corresponding to the acquisition environment temperature and the finger temperature one by one;
s2, after attendance at a certain attendance period is finished, extracting data in the memory by the attendance machine controller and verifying the data by using the formulas 1 and 2;
Figure GDA0001442669300000031
(T2i-T1i)≤Tthreshold 1 (2)
In the formula (I), the compound is shown in the specification,
Figure GDA0001442669300000032
the average value of the finger temperatures of all the employees in a certain attendance checking period is obtained;
T1ithe temperature value is the environmental temperature value of the ith employee during attendance checking;
T2ithe finger temperature value of the ith employee during attendance checking;
formula 1 verifies the authenticity of the staff attendance information through the average finger temperature of all staff, under the condition of the same environmental temperature, the fingertip temperature of a personal human body is about 30 ℃ under the normal condition, when the fingers use a silica gel finger mold, most silica gel is non-heat-conducting material, and the finger temperature T obtained during the silica gel finger mold attendance is the finger temperature T obtained during the silica gel finger mold attendance2Only slightly higher than the ambient temperature by 1-2 ℃; usually, the work area of the attendance machine is provided with air conditioning equipment, and even in hot summer, the finger mold temperature is equal to the finger mold temperature
Figure GDA0001442669300000033
There will be certain gap, can discern out fake attendance information to a certain extent, in this embodiment, in order to reduce the false positive rate, reduces attendance monitoring personnel's working strength, temperature threshold value TThreshold 2The temperature was set to 3 ℃.
Formula 2 is to compare the fingertip temperature with the ambient temperature in consideration of the characteristic that some employees have a weak body and their hands and feet are cold, and in this embodiment, the ambient temperature correction value T is preferablyThreshold(s)The false alarm rate is further reduced by setting the temperature to 5 ℃.
S3, when the formulas 1 and 2 are met simultaneously, the attendance machine controller marks the attendance information of the employee in a key manner and sends the attendance information to an attendance manager, and the attendance manager performs manual observation on the employee to confirm the authenticity of the attendance information of the employee; the specific operation mode is that whether the attendance is carried out by the person is checked by the attendance management personnel in a field observation or calling monitoring mode at the normal attendance time point of the staff so as to identify the phenomena of false attendance and attendance on behalf of the person.
In the invention, for accurate finger temperature information, the acquisition point of the finger temperature sensor 3 is arranged at the center of the acquisition window 2; in addition, the finger temperature sensor 3 is an infrared temperature sensor in view of the fact that the arrangement of the finger temperature sensor 3 does not interfere with the operation of the fingerprint acquisition device.

Claims (4)

1. The anti-cheating fingerprint attendance machine control method is characterized in that an environment temperature sensor (1) is arranged on a shell of the attendance machine: a finger temperature sensor (3) is arranged on an acquisition window (2) of a fingerprint acquisition device of the attendance machine, and a correction value T of the environmental temperature is setThreshold 1And a temperature threshold TThreshold 2Then, the method comprises the following steps:
s1, when the fingerprint collector collects fingerprints, the environment temperature T is collected through the environment temperature sensor (1) and the finger temperature sensor (3) at the same time1And finger temperature T2The serial number of the employee is sent to a memory after corresponding to the acquisition environment temperature and the finger temperature one by one;
s2, after attendance at a certain attendance period is finished, extracting data in the memory by the attendance machine controller and verifying the data by using the formulas 1 and 2;
Figure FDA0001442669290000011
(T2i-T1i)≤Tthreshold 1 (2)
In the formula (I), the compound is shown in the specification,
Figure FDA0001442669290000012
the average value of the finger temperatures of all the employees in a certain attendance checking period is obtained;
T1ithe temperature value is the environmental temperature value of the ith employee during attendance checking;
T2ithe finger temperature value of the ith employee during attendance checking;
and S3, when the formulas 1 and 2 are met simultaneously, the attendance machine controller marks the attendance information of the employee in a key manner and sends the attendance information to an attendance manager, and the attendance manager performs manual observation on the employee to confirm the authenticity of the attendance information of the employee.
2. The anti-cheating fingerprint attendance machine control method of claim 1, characterized by comprising the following steps: the acquisition point of the finger temperature sensor (3) is arranged at the center of the acquisition window (2).
3. The anti-cheating fingerprint attendance machine control method of claim 2, wherein: the finger temperature sensor (3) is an infrared temperature sensor.
4. The anti-cheating fingerprint attendance machine control method as claimed in any one of claims 1 to 3, characterized in that: the ambient temperature correction value TThreshold 1At 5 ℃, the temperature threshold value TThreshold 2Is 3 ℃.
CN201710717366.4A 2017-08-21 2017-08-21 Anti-cheating fingerprint attendance machine control method Expired - Fee Related CN109427108B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW200628772A (en) * 2005-02-03 2006-08-16 Chunghwa Telecom Co Ltd An automatic body temperature measurement and record system
JP2013130944A (en) * 2011-12-20 2013-07-04 Terumo Corp Employee management device, employee management system and employee management method
CN103544738A (en) * 2013-11-13 2014-01-29 胡江莉 Attendance system for company
CN104464009A (en) * 2014-12-23 2015-03-25 北海激活商贸有限责任公司 Attendance system based on fingerprint identification
CN205158480U (en) * 2015-10-14 2016-04-13 南昌航空大学 Intelligent access control system device
CN205281601U (en) * 2015-12-14 2016-06-01 青岛科信安全技术有限公司 Vehicle safety intelligence attendance machine
CN205942815U (en) * 2016-08-23 2017-02-08 福建正扬科技有限公司 Intelligence campus attendance device based on thing networking

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202472760U (en) * 2012-02-24 2012-10-03 孟静 Body temperature statistic counter

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW200628772A (en) * 2005-02-03 2006-08-16 Chunghwa Telecom Co Ltd An automatic body temperature measurement and record system
JP2013130944A (en) * 2011-12-20 2013-07-04 Terumo Corp Employee management device, employee management system and employee management method
CN103544738A (en) * 2013-11-13 2014-01-29 胡江莉 Attendance system for company
CN104464009A (en) * 2014-12-23 2015-03-25 北海激活商贸有限责任公司 Attendance system based on fingerprint identification
CN205158480U (en) * 2015-10-14 2016-04-13 南昌航空大学 Intelligent access control system device
CN205281601U (en) * 2015-12-14 2016-06-01 青岛科信安全技术有限公司 Vehicle safety intelligence attendance machine
CN205942815U (en) * 2016-08-23 2017-02-08 福建正扬科技有限公司 Intelligence campus attendance device based on thing networking

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