TWI807238B - Access control system - Google Patents

Abstract

An access control system includes an access control host, a lock detecting device and a security host. The access control host obtains and verifies an identity information, as well as unlocks a door lock based on the verification result. The lock detecting device detects whether the door lock is in a locked state or an unlocked state. The security host being provided with a security mode and an open mode is communicatively connected to the lock detecting device to obtain the detection result. The security host enters the security mode according to the door lock turns into the locked state form the unlocked state, and enters the open mode according to the door lock turns into the unlocked state form the locked state.

Description

access control system

The invention relates to an access control system, in particular to an access control system that can be automatically set and unlocked for security.

The traditional security system is to activate the security function when there is no one in a specific area (such as a building, a house), and an alarm can be triggered when a small person invades the area or destroys the entrance and exit. However, the user must remember to activate the security function when leaving to obtain corresponding protection. Before entering the range, the security function must be released first, and the access control verification must be performed before entering.

For the entrances and exits (such as community gates and side doors) that people often enter and exit, the aforementioned security system cannot be applied, and there is a lack of security guarantee. Even if the security system is used, it is quite inconvenient for the user. The user must first cancel the security function, and then perform access control verification to unlock the door. After unlocking the door and passing through, the door must be closed, and the security function must be re-enabled.

In view of this, the present invention proposes an access control system that can automatically release and set security when passers-by pass through the entrance and exit.

In one embodiment, the access control system includes an access control host, a lock detection device, and a security host. The access control host is used to obtain and verify an identity information and control a door according to the verification result Lock. The lock detection device detects whether the door lock is locked or unlocked. The security host has a security mode and a release mode, and communicates with the lock detection device to obtain the detection result of the lock detection device, and enters the security mode in response to the door lock changing from the unlocked state to the locked state, and enters the release mode in response to the door lock changing from the locked state to the unlocked state.

To sum up, the access control system proposed by the present invention can automatically set and release security according to the locked state of the entrance and exit, so that people who want to pass only need to perform identity verification once to pass and automatically release and set security before and after passing.

1: door lock

2: Access control host

3: Lock detection device

31: The first input and output device

4: Security host

5: Door open button

6: Door detection device

61: Reed sensor

62: Second I/O device

7: Setting device

8: Warning device

I1, I2: input terminals

O1, O2: output terminal

[ FIG. 1 ] is a schematic diagram of the structure of the access control system according to the first embodiment of the present invention.

[ FIG. 2 ] is a schematic diagram of the structure of the access control system according to the second embodiment of the present invention.

[ FIG. 3 ] is a schematic diagram of the structure of a lock detection device and a door detection device according to an embodiment of the present invention.

The terms "first" and "second" used herein are used to distinguish the referred elements, not to order or limit the difference of the referred elements, and are not used to limit the scope of the present invention. In addition, the "coupling" used refers to two or more elements that are directly in physical or electrical contact with each other, or are in indirect physical or electrical contact with each other; for example, if the text describes that the first device is coupled to the second device, it means that the first device can be directly electrically connected to the second device, or indirectly electrically connected to the second device through other devices or connection means. The term "communication connection" used herein refers to wired communication or wireless communication between two or more components.

Referring to Fig. 1, it is a schematic diagram of the architecture of the access control system of the first embodiment of the present invention picture. The access control system is applied to an entrance, and the entrance includes a door lock 1 for opening or closing the entrance. The access control system includes an access control host 2 , a lock detection device 3 and a security host 4 .

Here, the door lock 1 is an electronic lock that operates through power supply and receives a control signal to unlock. In some embodiments, the door lock 1 is an anode lock or a magnetic lock. When the power supply is lost, the door lock 1 will be in an unlocked state; otherwise, the door lock 1 will be in a locked state. In some embodiments, the door lock 1 is a cathodic lock. When the power supply is lost, the door lock 1 will be in a locked state; otherwise, the door lock 1 will be in an unlocked state.

The access control host 2 is used to obtain and verify the identity information of the person who wants to pass, and control the door lock 1 according to the verification result. The access control host 2 can confirm the identity of the person who wants to pass through methods such as access control card induction, password input, fingerprint identification, and face recognition. When the verification is passed, the access control host 2 outputs a control signal to the door lock 1 to unlock the door lock 1 .

The lock detection device 3 can detect whether the door lock 1 is locked or unlocked. In one embodiment, the lock detection device 3 is coupled to the lock status output terminal of the door lock 1 to detect the output signal of the lock status output terminal to identify whether the door lock 1 is locked or unlocked. In one embodiment, the lock detection device 3 is coupled to the control terminal of the door lock 1 to detect a control signal input to the door lock 1 to identify whether the door lock 1 is locked or unlocked. In one embodiment, the lock detection device 3 detects whether the bolt of the door lock 1 is in the locked position, so as to identify whether the door lock 1 is in a locked state or an unlocked state. Here, the lock detecting device 3 may be, for example, a light detector, which identifies whether the lock bolt is in the locked position by identifying whether the light received by the light detector is blocked.

The security host 4 has a security mode and a release mode, and is connected with the security control center. In the security mode, the security host 4 will send an alarm to the security control center according to the triggering of the security sensor (such as a glass vibration sensor) connected by communication. The security sensor set Set at the corresponding entrance and exit to detect abnormal intrusion events at the entrance and exit. In the release mode, the security host 4 will ignore the triggering of the security sensor and will not send an alarm to the security control center. The security host 4 communicates with the lock detection device 3 to obtain the detection result of the lock detection device 3, and enters the security mode in response to the door lock 1 changing from the unlocked state to the locked state, and enters the release mode in response to the door lock 1 changing from the locked state to the unlocked state. Thereby, when the door lock 1 is unlocked, the security host 4 will automatically enter the release mode; when the passerby passes through the entrance, the door lock 1 will be locked so that the security host 4 will automatically enter the security mode. Therefore, people who want to pass do not need to perform complicated steps such as security release, identity recognition, and security settings. The entrance and exit can still be maintained under security monitoring, and at the same time, legal personnel can pass freely.

In some embodiments, in order to avoid malfunctions caused by the time difference between unlocking the door lock 1 and releasing the security mode (that is, the door lock 1 has been unlocked before entering the release mode and an alarm is issued), the security host 4 sets a tolerance time. If the allowable time is passed after the door lock 1 is unlocked, the security host 4 is still in the security mode, and the security host 4 will send an alarm;

In some embodiments, the access control system includes two access control hosts 2, which are respectively installed at the two ends of the entrance and exit, so as to verify the identity of the passers-by from the two ends. When any access control host 2 unlocks the door lock 1 due to passing the verification, the security host 4 will automatically enter the release mode. When the door lock 1 is locked, the lock detection device 3 will detect that the door lock 1 changes from the unlocked state to the locked state, so that the security host 4 enters the security mode.

Referring to FIG. 2 , it is a schematic structural diagram of an access control system according to a second embodiment of the present invention. Compared with the first embodiment, the access control system of the second embodiment can also include a door-opening button 5, Door detection device 6, setting device 7 and warning device 8. However, it can be understood that, in some embodiments, in addition to the constituent elements of the access control system of the first embodiment, only some elements in the door opening button 5, the door detection device 6, the setting device 7 and the warning device 8 may be included.

As shown in FIG. 2 , the door open button 5 is coupled to the control terminal of the door lock 1 , and outputs a control signal to unlock the door lock 1 in response to a pressing action. The access control host 2 and the door-opening button 5 are arranged at the two ends of the entrance and exit respectively. Thereby, the person who wants to pass at the end close to the door-opening button 5 only needs to press the door-opening button 5 to unlock the door lock 1 without verifying his identity.

As shown in FIG. 2 , the door detection device 6 is connected to the security host 4 through communication. The door detection device 6 is used to detect whether the door corresponding to the door lock 1 is in a door-open state or a door-close state. The door detection device 6 sends a warning signal to the security host 4 when the duration of the door-open state exceeds a threshold (for example, more than three minutes). In this way, the security host 4 can send a notification message to the administrator's device (such as the administrator's mobile phone) in response to the warning signal, so that the administrator can know that the door has been opened for too long. The sending method of the notification message may be, for example, a push broadcast, a short message, an email, and the like.

Referring to FIG. 3 , it is a schematic structural diagram of the lock detection device 3 and the door detection device 6 according to an embodiment of the present invention. The lock detection device 3 is realized by a first input/output device 31 . The first I/O device 31 includes an input terminal I1 and an output terminal O1. The door detection device 6 includes a reed sensor 61 and a second I/O device 62 . The second I/O device 62 includes an input terminal I2 and an output terminal O2. The input terminals I1 and I2 respectively include one or more digital input pins; the output terminals O1 and O2 respectively include one or more digital output pins.

The input terminal I1 of the first input-output device 31 is coupled to the lock state output terminal of the door lock 1 to detect whether the door lock 1 is in an unlocked state or a locked state. The input terminal of the second I/O device 62 I2 is coupled to the reed sensor 61 to detect whether the door is in an open state or a closed state. The input terminal I2 of the second I/O device 62 is also coupled to the output terminal O1 of the first I/O device 31 . In response to the first I/O device 31 detecting that the door lock 1 changes from the locked state to the unlocked state, the output terminal O1 of the first I/O device 31 continues to output the first maintenance signal for a period of time (for example, three minutes), so that the input terminal I2 of the second I/O device 62 remains in the result of detecting the door-closed state, and after this period of time, the first maintenance signal is not output, so that the input terminal I2 of the second I/O device 62 is detected as the door-open state, and then the second I/O device 62 sends the aforementioned warning signal The number is given to the security host 4. It can be understood that the first I/O device 31 has a timer to count the duration of the first sustain signal; the first I/O device 31 and the second I/O device 62 respectively have a communication module for communicating with the security host 4 .

Refer to FIG. 2 and FIG. 3 together. The setting device 7 communicates with the security host 4 . Specifically, the setting device 7 has an operation interface (such as a button) and a communication module communicated with the security host 4 . The setting device 7 can send a setting signal to the security host 4 to activate an extended door opening function. The security host 4 responds to the setting of the extended door opening function so that the door detection device 6 does not send a warning signal. For example, when the user needs to open the door for a long time, he can operate the setting device 7 to send a setting signal. After receiving the setting signal, the security host 4 can send a no-send command to the second I/O device 62 . The output terminal O2 of the second I/O device 62 is coupled to the input terminal I2 of the second I/O device 62 . According to the alarm-free command, the output terminal O2 of the second I/O device 62 continues to output the second sustain signal for a period of time, so that the input terminal I2 of the second I/O device 62 remains in the result of detecting the door-closed state. Therefore, during this period of time, although the door is actually in an open state, the second input/output device 62 will not send the aforementioned warning signal to the security host 4 . Until the user closes the door, the induction signal of the reed sensor 61 changes, and the second maintains The signal will disappear with the change of the door state, and the extended door opening function will be released.

In some embodiments, the user can also send another setting signal by operating the setting device 7 , so that the security host 4 sends a disabling command to the second input-output device 62 . According to the canceling alarm command, the output terminal O2 of the second input-output device 62 will stop outputting the second maintenance signal, so that the input terminal I2 of the second input-output device 62 can obtain the real door state, thereby canceling the extended door opening function.

As shown in FIG. 2 , the security host 4 is also communicatively connected to a warning device 8 . The security host 4 drives the warning device 8 to output a warning in response to the warning signal. The warning can be expressed through sound, light and other means. That is to say, the warning device 8 is a device that can generate signals such as sound and light, such as a buzzer, a warning light, and the like. In this way, when the door has not been closed for a long time, the warning through the warning device 8 can remind the on-site personnel to close the door, thereby reducing safety breaches. In addition, in the security mode, when the security sensor is triggered or the door detection device 6 detects that the door is in an open state (that is, an abnormal intrusion event occurs at the corresponding entrance and exit), the security host 4 can also drive the warning device 8 to output a warning to remind on-site personnel to be alert.

In some embodiments, the security host 4 stores a schedule setting, and the schedule setting has an enabling period and an exempting period. During the enabling period (for example, there is no guard period at night), the security host 4 automatically enters the security mode or the release mode according to the detection result of the lock detection device 3 corresponding to the door switch state, and in the exempt period (for example, there is a guard period during the day), and maintains the release mode.

In some embodiments, the access control system may further include a camera (such as a network camera) installed at the entrance and exit, and communicated with the security control center. In this way, when the security control center receives the alarm sent by the security host 4, the security control center can obtain video archives or Real-time monitoring of the entrance and exit site.

In some embodiments, the power supply of the access control system is independent from the power supply of the door lock 1 .

In some embodiments, the security host 4 is also communicatively connected with an equipment status sensor, which can be used to detect the working status of other equipment on site, such as the activation status of the generator, whether the fire alarm is turned off, etc. The security host 4 can transmit these information to the security control center, so that the security control personnel can have a more comprehensive understanding of the scene situation, and can provide assistance in real time.

To sum up, the access control system proposed by the present invention can automatically set and release security according to the locked state of the entrance and exit, so that people who want to pass only need to perform identity verification once to pass and automatically release and set security before and after passing. In addition, through door position detection, it can timely remind the on-site personnel to close the door immediately, reducing security breaches. On the other hand, the extended door opening function can also be enabled according to the needs, and the time period for automatically setting and unlocking the preservation can be scheduled, which has flexibility in use.

1: door lock

2: Access control host

3: Lock detection device

4: Security host

Claims (9)

An access control system, comprising: an access control host, used to obtain and verify an identity information and control a door lock according to the verification result, wherein the door lock is an electronic lock; a lock detection device, including a first input device, the lock detection device detects that the door lock is in a locked state or an unlocked state, and when the first input device changes from the locked state to the unlocked state, it outputs a first maintenance signal for a period of time; and a door detection device, communicated with the security host, and detects that a door corresponding to the door lock is in a door open state or a door closed state, wherein the door detection device sends a warning signal to the security host when a duration of the door open state exceeds a threshold, wherein the door detection device Keeping the door lock in the door-closed state when receiving the first maintaining signal. The access control system as described in claim 1, wherein the security host sends a notification message to an administrator device in response to the warning signal. The access control system as described in Claim 1 further includes a warning device connected to the security host through communication, and the security host drives the warning device to output a warning in response to the warning signal. The access control system as described in claim 1 further includes a setting device communicated with the security host to activate an extended door opening function, and the security host responds to the setting of the extended door opening function so that the door detection device does not output the warning signal. The access control system as described in claim 1, wherein the security host stores a schedule setting, and the schedule setting has an activation period and an exemption period, so that during the activation period, according to the detection result of the lock detection device, it enters the security mode or the release mode correspondingly, and maintains the release mode during the exemption period. The access control system as claimed in claim 1 further includes a door opening button, which unlocks the door lock in response to a pressing action. The access control system as described in claim 1, wherein the lock detection device is connected to a lock state output terminal of the door lock to detect an output signal of the lock state output terminal to identify the door lock as the locked state or the unlocked state. The access control system as described in claim 1, wherein the lock detection device is connected to a control terminal of the door lock to detect a control signal input to the door lock to identify the door lock as the locked state or the unlocked state. The access control system as claimed in claim 1, wherein the lock detection device detects whether a bolt of the door lock is in a locked position to identify whether the door lock is in the locked state or the unlocked state.

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