CN103679907B - Biological information identification method and system applied to building talkback - Google Patents

Abstract

The invention discloses a biological information identification method and a system thereof applied to building talkback, the method comprises the steps of detecting whether the authorization of a selective calling user extension is obtained when a gate host computer is communicated with the selective calling user extension, if so, reading the biological information of a user by the gate host computer and storing the biological information to the selective calling user extension as a biological information stub; the entrance host receives the biological information of the user in real time and sends the biological information to all the extension sets of the user; the extension set of the user compares whether the biological information received in real time is consistent with the biological information stub or not, and feeds back a comparison result to the main machine at the door; and the door host controls the opening of the door according to the comparison result. The invention can expand the user extension without being influenced by the configuration of the gate host, increases the number of the user extensions without influencing the system identification time, each user extension and the gate host are independent embedded systems, has high biological information comparison speed, can reduce the comparison time and the hardware cost, and has the advantages of soft capacity, low cost, easy operation, high reliability and the like.

Description

A biometric information identification method and system applied to building intercom

technical field

The invention relates to the field of communication technology, in particular to a biological information identification method and system applied to building intercom.

Background technique

At present, many residential areas are equipped with building access control intercom systems. Modern large-scale residential areas often have multiple access control points, such as gates, multiple side entrances, unit entrances, parking lot entrances, etc. General building access control intercom systems usually use RFID cards to identify users, and are equipped with a door host and multiple user extensions. The user extension has a docking function with the door host of the gate, which can realize functions such as unlocking, dialogue, and video.

Due to the shortcomings of RFID cards such as easy damage, easy loss, easy theft, inconvenient carrying, and cumbersome management. Moreover, recognition methods such as manual dialogue and video recognition are not conducive to improving the traffic speed. Therefore, it is undoubtedly a direction of modern community management to use the user's own unique biological characteristics to identify the user to realize access control unlocking and other community management affairs. The user's biometrics are carried with him, and cannot be embezzled, lost or damaged. It can realize the cardless management of the community and bring great convenience to the residents of the community.

The user's biological characteristics, such as the user's fingerprint characteristics, the characteristic data of a single fingerprint usually requires 512B, and there are thousands of users in a modern large-scale community. Considering various fault-tolerant measures, each user often needs to store multiple fingerprint characteristic data. The storage capacity of the system is huge, and the feature comparison speed is reduced. In the case of limited configuration of the door host, how to expand users as much as possible without increasing the burden of the door host, and at the same time reduce the recognition time of the system to meet people's habitual requirements It has become the main problem that technicians need to solve now.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a biological information identification method applied to building intercom with the function of biological identification, which stores the biological information of multiple users in a distributed manner on the user extension, and can be independently authorized and maintained by the user. And its system, the system can quickly compare the biological characteristics of users in large communities to determine the identity of users, realize cardless management of modern intelligent communities, and has the advantages of easy operation and high reliability.

In order to achieve the above purpose, the following technical solutions are adopted:

A biometric information identification method applied to building intercom, comprising the following steps: detecting whether the door host is connected to the selective call user extension and whether the authorization of the selective call user extension is obtained; if so, the door host reads the user's biometric information and stores it in the selected Call the user extension as the biological information stub; the door host receives the user's biological information in real time, and sends the biological information to all user extensions; all user extensions compare the biological information received in real time with the biological information stub, and feed back the comparison result to the door host ; The door host controls the opening of the door or displays information according to the comparison result fed back by the user extension.

Further, the detection of whether the gate host is authorized by the selective call user extension when the gate host and the selective call user extension are connected, if so, the gate host reads the user's biological information and stores it in the selective call user extension as a biological information stub, including the following steps: obtaining Information about the extension of the selective call user, and establish a communication connection between the door host and the extension of the selective call user; detect whether the extension of the selective call user has received an instruction from the user to allow the collection of biological information, and if so, allow the door host to read the user’s biological information; Convert any biological information including fingerprint recognition, palm recognition, face recognition, iris recognition, or voice recognition into biometric data, and send the biometric data to the selective call user extension; the selective call user extension receives and The fingerprint feature data is stored as a biometric information stub; the door host displays the storage result, and executes continuous fingerprint feature data input or ends fingerprint input according to user commands.

Further, the door host receives the user's biological information in real time, and sends the biological information to all user extensions specifically: the door host reads the user's biological information in real time, converts it into biological feature data, and broadcasts the biological feature data. Data to all user extensions.

Further, all user extensions compare whether the biometric information received in real time is consistent with the biometric information stub, and feed back the comparison result to the door host. Specifically, all user extensions simultaneously receive the biometric data broadcasted by the door host, and at the same time transfer the biometric data to the door host. Compared with the biological information stub, the successful user extension will feed back the comparison result to the door host, and the failed user extension will not feedback the comparison result.

Further, after all the user extensions compare the biological information received in real time with the biological information stub, and feed back the comparison result to the door host, the following steps are also included: the door host displays the comparison result, and the comparison result is not received within a limited time, Determine that the user is a non-registered user.

A biometric information identification system applied to building intercom, including a door host and a plurality of user extensions, and also includes a first processing module, which is used to detect whether the door host and the selective call user extension are connected, whether the authorization of the selective call user extension is obtained, If so, the door host reads the user's biological information and stores it in the user extension as a biological information stub; the second processing module installed at the door host is used to receive the user's biological information in real time and send the biological information to all user extensions; The third processing module on the user extension is used to compare whether the biological information received in real time is consistent with the pre-stored biological information, and feeds back the comparison result to the door host; the fourth processing module installed on the door host is used to The comparison results control the opening of the gate or display information.

Further, the first processing module includes a first processing unit, which is used to obtain the information of the selective call user extension, and establish a communication connection between the door host and the selective call user extension; the second processing unit is used to detect whether the selective call user extension has obtained user Instructions that allow the collection of biological information, if so, allow the host at the door to read the biological information of the user; the third processing unit is used to read the information that the host at the door reads, including fingerprint recognition, palm recognition, face recognition, iris recognition, or voice recognition. Any kind of biometric information is converted into biometric data, and the biometric data is sent to the selective call user extension; the fourth processing unit is used for the selective call user extension to receive and store the fingerprint characteristic data as a biometric information stub; fifth The processing unit is used for the door host to display the stored results, and execute continuous fingerprint feature data input or end fingerprint input according to user commands.

Further, the second processing module includes a reading unit, which is arranged on the door host, and is used to read the biological information of the user in real time; a conversion unit, which is used to convert the biological information read by the reading unit into biometric data; A sending unit, configured to broadcast and send the biometric data to all user extensions.

Further, a fifth processing module is also included, which is used to display the storage result or the comparison result at the door host, if no comparison result is received within a limited time, it is judged that the user is a non-registered user.

Compared with prior art, the beneficial effect of the present invention is:

In the present invention, the host computer at the door reads the fingerprint feature data of the user and transmits it to each user extension, and the user extension completes the storage of the input fingerprint data, and compares it at the same time by each user extension during fingerprint identification, and a single user extension needs to store The amount of characteristic data is small, the storage task is small, the comparison speed is fast, and it can be expanded infinitely without affecting the comparison speed, which solves the storage and comparison problem of large-capacity biometric data.

The invention can realize user identification and management. The storage and deletion of the user's biometric data on the user extension can be managed and operated by the user's self-authorization. In addition, the user extension can be authorized to control the door host to complete the collection of biological information. Only the biological information collection module can be installed on the door host, and there is no need to set up a biological information collection module on each user extension. It has low cost, easy operation, and high reliability. The advantages.

Description of drawings

Fig. 1 is a flow chart of the steps of the biological information identification method of the present invention;

Fig. 2 is the specific step flowchart of step S10;

Fig. 3 is a structural block diagram of the biological information identification system of the present invention.

Illustration: 1—first processing module; 11—first processing unit; 12—second processing unit; 13—third processing unit; 14—fourth processing unit; 15—fifth processing unit; 2—second processing Module; 21—reading unit; 22—converting unit; 23—sending unit; 3—third processing module; 4—fourth processing module; 5—fifth processing module.

detailed description

The present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. The schematic implementation and description of the present invention are used to explain the present invention, but are not intended to limit the present invention.

Biometrics in this embodiment refers to any one of fingerprint recognition, palm shape recognition, face recognition, iris recognition, and voice recognition. In this embodiment, fingerprint recognition is taken as an example for description.

The host at the door provided by this embodiment includes a fingerprint identification module, a communication module, a CCD/CMOS video head, an electret microphone and a speaker, buttons, an LED/LCD display, a door lock control circuit, and a power supply circuit that are respectively connected to the microprocessor. , the communication module is connected to user extensions through multi-core wires or network cables or wirelessly. The user extension includes a communication module connected to the microprocessor, a CRT or liquid crystal display, an electret microphone, a speaker, and buttons, and the communication module is connected to the host at the door through a multi-core wire or a network cable or wirelessly. This embodiment is implemented based on the hardware of the existing building intercom system, but the point of the invention is not the hardware, but the method and system implemented on the hardware.

As shown in Figure 1, the biological information identification method of this embodiment mainly includes steps S10-S40:

Step S10: Detect whether the door host is authorized by the selective call user extension when it is connected to the selective call user extension. If so, the door host reads the user's fingerprint and stores it in the selective call user extension as a fingerprint stub.

As shown in Figure 2, step S101-S105 is specifically included in step 101:

Step S101: Detect the information of the selective call user extension selected by the user at the door host, and establish a communication connection between the door host and the selective call user extension. The user calls the user's extension at the host computer at the door, for example, calls the extension of room 301. After the call was made, the communication connection between the door host and the user extension in room 301 was established. Through the host computer at the door, you can communicate with the user extension in room 301, such as dialogue and video.

Step S102: Detect whether the selective call user extension has received an instruction from the user to allow fingerprint collection, and if so, allow the door host to read the user's fingerprint. After step S101, the selective call user extension establishes a communication connection with the door host. At this time, after the selective call user extension is required to perform authorization, for example, after sending an authorization command through some preset buttons on the selective call user extension, the door host can obtain authorization to collect fingerprints. In this way, the problem of illegal collection of fingerprint information caused by some misoperations can be avoided. At the same time, it can solve the problem of criminals tampering with the traditional door host that collects fingerprint information to obtain identity authentication, and effectively improve the security of the entire system. This step includes the situation that the selective call user extension actively authorizes, and also includes the situation that the selective call user extension collects user fingerprints according to the request of the door host. In both cases, the door host can obtain the authorization to collect fingerprints only after the user confirms with the selective call user extension. In the case that the selective call user extension is not authorized, it is impossible to collect fingerprints from the host at the door unilaterally. It is different from the existing mode in which fingerprints are collected by the host at the gate and stored in the host at the gate.

Step S103: Convert the fingerprint read by the host at the door into biometric data, and send the biometric data to the extension of the selective call user. After step S102, the door host is authorized to collect fingerprints, and converts the fingerprints into biometric data that can be stored and identified by the processing circuit, and sends the feature data to the selective call user extension.

Step S104: The extension of the called user receives and stores the fingerprint feature data as a biometric information stub. The user extension stores the biometric data and uses it as comparative reference data for subsequent identification.

Step S105: The host at the door displays the stored results, and performs continuous fingerprint feature data input or ends fingerprint input according to user commands. The host at the door uses LED display or LCD display types, such as LCD displaying Chinese prompt "continue to input fingerprint", LED display "NEXT" etc. to prompt the user to continue inputting fingerprint.

Step S20: The door host receives the user's fingerprint data in real time and sends it to all user extensions. This step is mainly an identity identification step in the subsequent use process, which is different from the identity storage step of step S10. In actual use, the number of door hosts is often limited, while the number of user extensions is large, and in most cases it is a one-to-many situation. To compare fingerprints, it is necessary to send the collected fingerprints to all user extensions. When the authenticated user enters the fingerprint in the fingerprint collector of the door host, the door host converts and sends the collected fingerprints to all user extensions by broadcasting. The broadcast method can reduce the waiting time and speed up the whole process of fingerprint identification.

Step S30: The user extension compares whether the fingerprint received in real time is consistent with the fingerprint stub, and feeds back the comparison result to the door host. All user extensions simultaneously receive the fingerprints that have been converted into biometric data sent by the host at the door, and compare the fingerprints collected in real time with the fingerprint stubs. If the matching is successful, the user extension will feed back the comparison result to the door host; if the comparison fails, the user extension will not feed back the comparison result. The advantage of this is that it can solve the communication data collision problem caused by multi-extension sending, and avoid the problem of strict hardware configuration and software optimization of the door host caused by too much data, which can greatly reduce the burden on the door host, speed up the processing speed, and make the system Add extensions and users without increasing processing time.

Step S40: The host at the door displays the comparison result, and if no comparison result is received within the time limit, it is judged that the user is a non-registered user. Due to misjudgment, inaccurate fingerprint collection by the host at the gate, wrong fingerprint input and other issues, the host at the gate did not receive the comparison result within a certain period of time, indicating that there is no such fingerprint in all extensions. The host at the door uses LED display or LCD display types, such as LCD displaying Chinese prompt "fingerprint recognition error", LED display "_ERR", etc. to prompt the user to continue to input fingerprints, and compare again. Then, if there is no feedback result within the limited time, it can be judged that the user is a non-registered user and cannot pass.

Step S50: The door host controls the opening of the door or displays information according to the comparison result fed back by the user extension. According to all the above steps, it can be known that if the comparison result is fed back, the door host will open the door and let it pass, otherwise the door will not be opened. The displayed information includes prompt information such as refusal to release.

The host at the door of the present embodiment includes a biometric identification module, a communication module, a CCD or CMOS video head, an electret microphone and a loudspeaker, buttons, and an LED or LCD display, a door lock control circuit, a power supply circuit, and a door lock control circuit respectively connected to a microprocessor. The biometric identification module of the host can be any one of a fingerprint identification module, a palm recognition module, a face recognition module, an iris recognition module or a voice recognition module.

As shown in Figure 3, the system of the present embodiment is made up of door host and user extension, wherein door host is provided with second processing module 2 and the 4th processing module 4, and user extension is provided with the 3rd processing module 3, the first processing module Module 1 is respectively set at the door host and user extension.

Wherein the first processing module 1 is used to detect whether the door host and the user extension are connected and obtain the authorization of the user extension. In the case of authorization, the door host reads the user's fingerprint and stores it in the user extension as a fingerprint stub. The first processing module 1 includes a first processing unit 11 , a second processing unit 12 , a third processing unit 13 and a fourth processing unit 14 . The first processing unit 11 is used to detect the information of the user extension called by the user at the door host, and establish a communication connection between the door host and the called user extension. The second processing unit 12 is used to detect whether the calling user's extension has obtained an instruction from the user to allow fingerprint collection, and if so, allows the door host to read the user's fingerprint. The third processing unit 13 is used to read the fingerprint by the host at the door and convert it into biometric data, and send the biometric data to the extension of the calling user. The fourth processing unit 14 is arranged on the user extension, and it is used to receive and store the fingerprint feature data as a fingerprint stub by the user extension of the call. The fifth processing unit 15 is used for displaying the stored results, and performing continuous fingerprint feature data input or ending fingerprint input according to user commands. The first processing module 1 is mainly used for inputting and storing the user's fingerprint information, that is, leaving the user's identity information for subsequent verification.

The second processing module 2 is mainly used for subsequent identification processing. It includes a reading unit 21, that is, a fingerprint collector, for collecting a user's fingerprint. In the recognition mode, as long as the user puts his finger on the fingerprint collector, the door host will collect the user's fingerprint. The reading unit 21 converts the collected fingerprints into fingerprint feature data through the conversion unit 22, and broadcasts them to all user extensions through the sending unit 23.

The third processing module 3 is set on the user extension and is mainly used to identify the user's biological identity information. It compares the fingerprints received in real time with the pre-stored fingerprint stubs, and feeds back the matching results to the door host. If there is no match, it does not feed back the comparison results to the door host. This can avoid data collisions, reduce the processing capacity of the host, and speed up processing.

The fourth processing module 4 controls the opening of the gate according to the comparison result. After the comparison result fed back by the third processing module 3 is sent to the fourth processing module 4, the fourth processing module 4 can control the opening or closing of the gate and display related information according to the comparison result. When there is a feedback matching result, the lock of the gate is controlled to be opened and the user is released.

The fifth processing module 5 is used to display the comparison result on the host computer at the door, if no comparison result is received within a limited time, it is judged that the user is a non-registered user. This is due to the consideration of misjudgment, inaccurate fingerprint collection by the host at the door, and wrong fingerprint input. It can provide multiple identification opportunities and prevent locking caused by errors.

The working principle of this system takes the fingerprint building intercom system as an example:

When the outdoor station calls the user's extension, it can realize visual communication, unlock, and also realize the setting, storage and identification of biometric data. The user extension is equipped with function keys such as talking, monitoring, calling, and unlocking to realize corresponding functions. When communicating with the host, the biometric data of a specific user can be set and stored on the extension through the unlock key.

The host at the door is usually in standby mode. When calling, you can press the number keys on the panel of the host to input the house number corresponding to the user’s extension. The host at the door sends a corresponding call command through the communication module, selects the extension you want to call, turns on the video head, and the door panel displays the call status. , to indicate the call status with a ringback tone. When the user extension receives a call from the outdoor station, it will give a ringing sound, turn on the video display, and the user can press the call button to connect to the call with the outdoor station. If it needs to be unlocked, the user can press the unlock key to unlock it during a call.

If you need to set fingerprints during a call, the user can press and hold the unlock button on the user extension, and the door host will indicate to enter the fingerprint setting state with a prompt tone. The fingerprint module and panel function keys complete the storage or deletion of specific user fingerprint feature data.

The technical solutions provided by the embodiments of the present invention have been introduced in detail above, and the principles and implementation methods of the embodiments of the present invention have been explained by using specific examples in this paper. The descriptions of the above embodiments are only applicable to help understand the embodiments of the present invention Principle; at the same time, for those skilled in the art, according to the embodiment of the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be construed as limiting the present invention.

Claims (5)

1. A biological information identification method applied to building intercom, characterized in that, comprising the following steps: Detect whether the door host is authorized by the selective call user extension when it is connected to the selective call user extension. If so, the door host reads the user's biometric information and stores it in the selective call user extension as a biometric stub; The host at the door receives the user's biological information in real time, and sends the biological information to all user extensions, specifically: The door host reads the user's biometric information in real time, converts it into biometric data, and broadcasts the biometric data to all user extensions; All user extensions compare the biological information received in real time with the biological information stub, and feed back the comparison results to the door host; The door host controls the opening of the door or displays information according to the comparison result fed back by the user extension; Whether the authorization of the selective call user extension is obtained when the detection door host and the selective call user extension are connected, if so, the door host reads the user's biological information and stores it in the selective call user extension as a biological information stub, including the following steps: Obtain the information of the selective call user extension, and establish a communication connection between the door host and the selective call user extension; Detect whether the selective call user extension has obtained the user's instruction to allow the collection of biological information, and if so, allow the door host to read the user's biological information; Convert any biological information read by the host at the door, including fingerprint recognition, palm recognition, face recognition, iris recognition, or voice recognition, into biometric data, and send the biometric data to the selective call user extension; The selective call user extension receives and stores the biometric data as a biometric stub; The gate host displays the stored results, and performs continuous biometric data input or ends biometric input according to user commands. 2. The biological information identification method applied to building intercom according to claim 1, characterized in that, all user extensions compare the biological information received in real time with the biological information stubs, and feed back the comparison results to the door host for details for: All user extensions simultaneously receive the biometric data broadcasted by the host at the door, and compare the biometric data with the biometric information stub at the same time. The successful user extensions will feed back the comparison results to the door host, and the user extensions that fail the comparison will not feedback the comparison result. 3. The biological information identification method applied to building intercom according to claim 2, wherein all user extensions compare whether the biological information received in real time is consistent with the biological information stubs, and feed back the comparison results to the host at the door Also includes the following steps: The host at the door displays the comparison result, and if no comparison result is received within the time limit, it is judged that the user is a non-registered user. 4. A biometric information identification system applied to building intercom, including a door host and multiple user extensions, and its features also include: The first processing module is used to detect whether the gate host is authorized by the selective call user extension when the gate host and the selective call user extension are connected. If so, the gate host reads the user's biological information and stores it in the selective call user extension as a biological information stub; The second processing module installed at the door host is used to receive the user's biological information in real time, and send the biological information to all user extensions; The second processing module includes: A reading unit, which is arranged at the host at the door, is used to read the biological information of the user in real time; A converting unit, configured to convert the biological information read by the reading unit into biological characteristic data; A sending unit, configured to broadcast and send the biometric data to all user extensions; The third processing module installed in the user extension is used to compare whether the real-time received biological information is consistent with the pre-stored biological information, and feed back the comparison result to the door host; The fourth processing module installed at the door host is used to control the opening of the door or display information according to the comparison result fed back by the user extension; The first processing module includes: The first processing unit is used to obtain the information of the selective call user extension, and establish a communication connection between the door host and the selective call user extension; The second processing unit detects whether the selective call user extension has obtained an instruction from the user to allow the collection of biological information, and if so, allows the door host to read the biological information of the user; The third processing unit is used to convert any biological information read by the host at the door, including fingerprint recognition, palm recognition, face recognition, iris recognition, or voice recognition, into biometric data, and send the biometric data to Selective call user extension; The fourth processing unit is used for the selective call user extension to receive and store the biometric data as a biometric information stub; The fifth processing unit is used to display the stored results, and perform continuous biometric data input or end biometric input according to user commands. 5. The biological information identification system applied to building intercom according to claim 4, characterized in that: it also includes a fifth processing module, which is used to display the comparison result at the door host, and the comparison result is not received within a limited time , to determine that the user is a non-registered user.