Alarm false alarm prevention control method and system based on digital radio communication

Abstract

The present invention discloses an alarm false alarm prevention control method and system based on digital radio communication. The alarm controller automatically detects the system current and the sound playback decibel threshold to determine whether it is a false alarm. If it is a false alarm, the sound playback is immediately stopped and the power supply of the power amplifier is turned off, thereby avoiding the adverse effects of the false alarm. At the same time, in order to prevent malicious operation or hijacking of the system to issue an alarm, the remote issuance operation has four legal operation judgments, and the local issuance operation has two legal operation judgments; and the control issuance instruction includes a double encryption factor to ensure that the control instruction will never be repeated since the system is enabled, thereby eliminating the risk of interception and retransmission of air instructions. At the same time, the air protocol has complex encryption protection and deception code interference, which guarantees the protocol from being cracked to the greatest extent.

Description

Technical Field

[0001] The present invention relates to the technical field of civil air defense alarms, and in particular to an alarm false alarm prevention control method and system based on digital radio communication. Background Art

[0002] The biggest purpose of civil air defense alarm construction is to meet the needs of reminding citizens to evacuate and take shelter according to unified deployment when the city is about to encounter air raids during wartime. Since civil air defense alarms are widely distributed in urban areas and have a loud sound volume, if they are mistakenly sounded during non-wartime, it will directly cause panic and cause adverse social impacts. Therefore, in the process of civil air defense alarm construction, preventing false alarms is the first task.

[0003] At present, most domestic civil air defense alarm suppliers use 4G / 5G IoT cards to prevent false alarms. However, relevant laws or regulatory documents stipulate that the frequency and transmission code of civil air defense alarms are confidential, and the alarm points are war preparedness data, which are secrets. Using 4G / 5G IoT cards to prevent false alarms is a serious violation or illegal operation, which will cause the above confidential and secret secrets to be exposed to the public network, thereby causing the leakage of secrets.

[0004] Therefore, a method and system for preventing false alarms based on digital radio communication is designed. By using ultra-short wave digital radio, the communication format, communication link and underlying communication protocol can be absolutely controlled, and the uplink and downlink communication control information, sensor information and alarm information content can be normally transmitted. By using a digital radio dedicated to civil air defense alarms to handle operations related to preventing false alarms, the effect of preventing false alarms is achieved while ensuring the security of secrets, which becomes a direction for further improvement. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides an alarm false alarm control method based on digital radio communication, including two methods running in parallel, a false alarm control method triggered by human factors and a false alarm control method triggered by environmental factors;

[0006] The method for preventing false alarms caused by human factors includes the following steps:

[0007] S1.1. The alarm controller, central controller and alarm issuing client are operating normally;

[0008] S1.2.1. Based on S1.1, the central controller and the alarm issuing client proactively issue protection measures remotely;

[0009] S1.2.2. Based on S1.1, the alarm controller takes the initiative to issue protective measures locally;

[0010] S1.2.3, based on S1.1, the alarm controller, central controller and alarm issuing client take the initiative to implement issuing command interception and resending protection measures;

[0011] The method for preventing false alarms from being triggered by environmental factors comprises the following steps:

[0012] S2.1. The current transformer in the alarm controller detects the system current, and the preset current threshold is 1A; the alarm controller also obtains the noise decibel value of the decibel sensor in the external sound amplifier component, and the preset noise decibel threshold is 110dB;

[0013] S2.2. Based on S2.1, if the system current is greater than 1A, it is determined that the alarm controller has sounded the civil air defense alarm; if the noise decibel is greater than 110dB, it is also determined that the alarm controller has sounded the civil air defense alarm;

[0014] S2.3, based on S2.2, determining whether a remote alarm issuing instruction is currently received;

[0015] S2.4.1. Based on S2.3, if a remote alarm issuing instruction is received, return to step S2.1 and perform detection again;

[0016] S2.4.2. Based on S2.3, if no remote alarm issuing instruction is received, further detect whether there is an alarm controller control button operating to issue an alarm;

[0017] S2.5.1, based on S2.4.2, if it is detected that the control button of the alarm controller issues an alarm, return to step S2.1 to perform another test;

[0018] S2.5.2. Based on S2.4.2, if the alarm controller's control button is not detected to issue an alarm, it is determined that the alarm controller has sounded in error. The alarm controller immediately stops sounding and turns off the power amplifier, while recording a local log. The automatic operation log for preventing false alarms can be queried remotely at any time.

[0019] In step S1.2.1, the central controller and the alarm issuing client actively remotely issue protective measures, including the following steps:

[0020] a) The current user enters the central controller or alarm issuing client login page and performs the first level system user login determination;

[0021] b) Enter the user name and password. After the system determines that they are correct, it will enter the system main interface. If the user name or password is incorrect, it will prompt an error and stay on the login interface.

[0022] c) After entering the distribution interface, the current user can select the distribution object, distribution content and other customized alarm information; the user can also choose to distribute TTS intelligent voice;

[0023] d) After selecting the distribution object and the content to be sent, click the distribution button. The central controller or alarm distribution client automatically detects whether the controller U shield or client U shield has been inserted. The controller U shield or client U shield is bound to the current user. If it is another unauthorized user, it will be judged as an invalid U shield. After prompting an error message, the distribution work will not be executed further; if the controller U shield or client U shield bound to the current user has been inserted, the distribution object and distribution content confirmation window will pop up to perform the next step;

[0024] e) The current user confirms the recipient and content of the distribution in the recipient and content confirmation window. If the recipient and / or content of the distribution are incorrect, close the pop-up window and reselect the recipient and content of the distribution. If the recipient and content of the distribution are correct, click OK to proceed to the next step.

[0025] f) After confirming that the distribution object and distribution content are correct, enter the distribution password. The distribution password is only valid for the current user. If the entered distribution password is correct, proceed to the next step, otherwise return to the distribution interface in step c;

[0026] g) After checking that the input distribution password is correct, the information formed by the selected distribution object and distribution content is sent to the alarm communication server, and the control instruction is generated before distribution.

[0027] In step S1.2.2, the alarm controller actively performs local issuance of protection measures, including the following steps:

[0028] h) Whether the door password entered by the current user at the alarm controller installation location is correct;

[0029] i) If the door password entered by the current user is incorrect, the door where the alarm controller is placed cannot be opened to prevent the alarm controller button from being accidentally touched; if the door password entered by the current user is correct, the login password is entered on the login interface of the alarm controller;

[0030] j) If the login password of the alarm controller is entered correctly, the next step of issuing can be carried out; if the login password is entered incorrectly, a failure prompt will be displayed and the login interface will be retained to prevent the alarm controller from being mistakenly sounded by malicious human operation;

[0031] k) The release operation includes: turning on the power of the sound amplifier, selecting the alarm release button to operate, the alarm release content button includes three types of air defense alarms and customized alarms, and clicking the button can directly release the alarm;

[0032] l) After the alarm is issued, close the door of the box where the alarm controller is placed to end the alarm notification.

[0033] In step S1.2.3, the alarm controller, central controller and alarm issuing client actively perform issuing instruction interception and resending protection measures, including the following steps:

[0034] m) Start the encrypted distribution protocol: the user selects the distribution object and the distribution content, and when the distribution is normal, the selected distribution object and the distribution content are sent out after the communication server performs communication protocol combination and encryption;

[0035] n) Protocol function code combination: Combine the distribution object and distribution content into the protocol to form a control instruction, that is, a real control instruction. After the alarm controller terminal decrypts it, it will get the content of this control instruction, so that the alarm controller knows whether to sound, what to sound, arm / disarm, and power on / off of the power amplifier;

[0036] o) Double encryption factor for control instructions: obtain the project code and the issuance serial number at the same time, the project code is a fixed two-byte, and the issuance serial number is a four-byte that does not participate in encryption;

[0037] p) Generate control instructions; add a release serial number to the control instructions;

[0038] q) Double security of encryption and deception code: Obtain the key by project, encrypt the instruction by encryption method, the encryption factors involved in the encryption calculation include the key, project code and release sequence number, the encrypted instruction does not contain the four bytes of release sequence number; calculate the number of deception codes generated by the encrypted instruction according to the release sequence number, and automatically generate the specified number of deception code bytes after the deception code is inserted into the instruction position sequence;

[0039] r) Insert the deception code into the control instruction: according to the calculated position sequence of the deception code insertion instruction, the deception code is inserted into the encrypted instruction to form the control instruction officially issued in the air;

[0040] s) and issue encrypted control instructions.

[0041] The present invention also provides an alarm false alarm prevention control system based on digital radio communication, which is applied to an alarm false alarm prevention control method, including an alarm issuing client, a central controller, an alarm communication server, an alarm controller and an external sound amplifier component, wherein the alarm issuing client is bidirectionally electrically connected to the central controller via the alarm communication server, the central controller is bidirectionally electrically connected to the alarm controller via an ultrashort wave digital radio, the alarm controller is bidirectionally electrically connected to the external sound amplifier component, and cross-linked false alarm prevention is achieved between the alarm issuing client, the central controller and the alarm controller;

[0042] The alarm issuing client includes a computer, a client U shield and an alarm issuing interface. The computer is used to send control instructions and query instructions to the alarm communication server, and is also used to query, receive and display the reported information from the alarm communication server; the alarm issuing client U shield is used to identify whether the currently logged-in user is an authorized user and choose whether to continue to perform the work;

[0043] The alarm communication server is used to receive control instructions and query instructions from the alarm issuing client, and send the control instructions and query instructions to the central controller; the alarm communication server receives the reported information from the central controller, stores it in its own database, and then retrieves and displays it by the alarm issuing client; the alarm communication server also records the logs of all control instructions and query instructions;

[0044] The central controller includes a central mainboard, a controller U shield, a first ultra-short wave data transmission radio, a central display screen and an alarm issuing interface. The central mainboard is used to receive control instructions and query instructions from the alarm communication server, send reporting information to the alarm communication server, detect whether the controller U shield is inserted and whether the supporting information is correct, connect with the display screen to display information and control information, send control instructions and query instructions to the first ultra-short wave data transmission radio, and receive reporting information from the first ultra-short wave data transmission radio;

[0045] The alarm controller includes an alarm mainboard, a second ultra-short wave digital transmission radio, an alarm display screen, a playback amplifier, a control button, an internal audio speaker and an electronic switch. The alarm mainboard is used to read the current value of the current inductor in real time, read the switch status information of the electronic switch in real time, receive control information of the control button, push display information to the alarm display screen, push audio signals to the playback amplifier and the internal audio speaker, receive control instructions and query instructions from the first ultra-short wave digital transmission radio, and send reporting information to the second ultra-short wave digital transmission radio;

[0046] The external sound power amplifier component includes a decibel sensor and an external sound loudspeaker. The decibel sensor is used to record the decibel value of noise near the external sound loudspeaker and transmit the decibel value of noise to the alarm mainboard for real-time reading.

[0047] The work of realizing cross linkage and preventing false alarm between the alarm issuing client, the central controller and the alarm controller includes linkage arming / disarming work and power on and off work of the sound amplifier.

[0048] The alarm issuing client has the same function as the alarm issuing interface of the central controller. The alarm issuing interface includes the functions of alarm selection, alarm issuing, TTS intelligent voice issuing, remote power on / off of the power amplifier, remote arming / disarming and alarm log record query.

[0049] The linkage arming / disarming operation is as follows: when the alarm controller needs to issue an alarm, the current arming / disarming status of the alarm controller is determined in advance; when the alarm issuing client or the central controller chooses to perform remote disarming, the alarm controller can perform local arming; when the alarm controller chooses to perform local disarming, the alarm issuing client or the central controller can choose to perform remote arming.

[0050] The power-on and power-off operation of the playback amplifier is as follows: when the alarm controller needs to issue an alarm, the current state of the playback amplifier of the alarm controller is determined in advance; when the alarm issuing client or the central controller chooses to power on the remote playback amplifier, the alarm controller can power off the local amplifier; when the alarm controller chooses to power on the local playback amplifier, the alarm issuing client or the central controller can choose to power off the remote amplifier.

[0051] Compared with the prior art, the present invention has the following beneficial effects:

[0052] (1) The present invention automatically detects the system current and the decibel threshold of the sound through the alarm controller to determine whether it is a false alarm. If it is a false alarm, the sound is immediately stopped and the power supply of the power amplifier is turned off, thereby avoiding the adverse effects caused by the false alarm. At the same time, in order to prevent the system from being maliciously operated or hijacked to issue an alarm, the remote issuance operation has four legal operation judgments, and the local issuance operation has two legal operation judgments; and the control issuance instruction includes a double encryption factor to ensure that the control instruction will never be repeated since the system is enabled, thereby eliminating the risk of interception and retransmission of air commands. At the same time, the air protocol has complex encryption protection and deception code interference, which guarantees the protocol from being cracked to the greatest extent. In addition, the present invention can also realize remote and local linkage protection, including arming / disarming function and power on / off function of the playback amplifier. Through the arming / disarming function, the erroneous operation of remote issuance or local buttons can be eliminated. When the alarm controller is in the armed state, no matter whether it receives a remote alarm issuance instruction or a local alarm button issuance operation, it will not respond and will not sound the alarm or TTS intelligent voice; through the power on / off function of the playback amplifier, the erroneous operation of remote issuance or local buttons can also be eliminated. When the alarm playback amplifier is not powered off, no matter whether it receives a remote alarm issuance instruction or a local alarm button issuance operation, the alarm or TTS intelligent voice can only be sounded in the internal speaker of the alarm controller, and will not sound through the external audio amplifier to cause adverse effects.

[0053] (2) The present invention uses a first ultra-short wave data transmission radio station and a second ultra-short wave data transmission radio station in a dedicated frequency band to transmit data between the alarm controller and the central controller, without using any network connection related to the international Internet (public network). While achieving the effect of preventing false alarms, it also ensures the security of secrets. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 It is a system block diagram of the present invention.

[0055] Figure 2 It is a schematic diagram of the composition structure of the present invention.

[0056] Figure 3 This is a flow chart of the central controller and the alarm issuing client of the present invention actively and remotely issuing protective measures.

[0057] Figure 4 The present invention is a flow chart of the alarm controller actively issuing protective measures locally.

[0058] Figure 5 The present invention is a flowchart of the alarm controller, central controller and alarm issuing client actively performing issuing instruction interception and resending protection measures.

[0059] Figure 6This is a flow chart of the false alarm prevention control method triggered by environmental factors of the present invention.

[0060] Figure 7 This is a workflow diagram of the linkage arming / disarming of the present invention.

[0061] Figure 8 The present invention is a flowchart of the power on and off operation of the playback power amplifier. DETAILED DESCRIPTION

[0062] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods.

[0063] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0064] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] like Figures 1 to 7 As shown, the alarm false alarm control method based on digital radio communication includes two methods running in parallel, a false alarm control method triggered by human factors and a false alarm control method triggered by environmental factors. Specifically, in this embodiment, the influence of human factors includes the sound of civil air defense alarm and / or the broadcast of TTS voice caused by remote and local human misoperation, human malicious operation or hijacking operation; the influence of environmental factors includes the sound of civil air defense alarm caused by electromagnetic environment interference, component aging, and dust accumulation;

[0066] The control method for preventing false alarms caused by human factors includes the following steps:

[0067] S1.1. The alarm controller, central controller and alarm issuing client are operating normally;

[0068] S1.2.1. Based on S1.1, the central controller and the alarm issuing client proactively issue protection measures remotely;

[0069] Specifically, the central controller and the alarm issuing client actively remotely issue protection measures including the following steps:

[0070] a) The current user enters the central controller or alarm issuing client login page and performs the first level system user login determination;

[0071] b) Enter the user name and password. After the system determines that they are correct, it will enter the system main interface. If the user name or password is incorrect, it will prompt an error and stay on the login interface.

[0072] c) After entering the distribution interface, the current user can select the distribution object, distribution content and other customized alarm information; the user can also choose to distribute TTS intelligent voice;

[0073] d) After selecting the distribution object and the content to be sent, click the distribution button. The central controller or alarm distribution client automatically detects whether the controller U shield or client U shield has been inserted. The controller U shield or client U shield is bound to the current user. If it is another unauthorized user, it will be judged as an invalid U shield. After prompting an error message, the distribution work will not be executed further; if the controller U shield or client U shield bound to the current user has been inserted, the distribution object and distribution content confirmation window will pop up to perform the next step;

[0074] e) The current user confirms the recipient and content of the distribution in the recipient and content confirmation window. If the recipient and / or content of the distribution are incorrect, close the pop-up window and reselect the recipient and content of the distribution. If the recipient and content of the distribution are correct, click OK to proceed to the next step.

[0075] f) After confirming that the distribution object and distribution content are correct, enter the distribution password. The distribution password is only valid for the current user. If the entered distribution password is correct, proceed to the next step, otherwise return to the distribution interface in step c;

[0076] g) After checking that the input distribution password is correct, the information formed by the selected distribution object and distribution content is sent to the alarm communication server, and the control instruction is generated before distribution.

[0077] Specifically, in this embodiment, the issuance objects include unified control (control of all subordinate alarms), district control (control of alarms under a certain district or county), group control (control of alarms under a certain customized group), and single control (control of one or more selected alarms, and the number of selected alarms cannot exceed 10).

[0078] The content issued includes three types of air defense alarms (early alarm, air raid alarm, and all-clear), TTS intelligent voice (only available in the alarm issuance system), and other customized types of alarms (such as disaster alarms, fire alarms, etc.). To issue TTS intelligent voice, you also need to enter the text content you want to issue.

[0079] S1.2.2, based on S1.1, the alarm controller actively issues local protection measures. Generally, there will be a dedicated alarm room at the location where the alarm controller is installed, and the alarm room is usually locked. However, this is only for new alarms installed in recent years. Since the construction cycle of alarm controllers can be as long as several decades, the old alarm controllers may be directly installed in the stairwells or other public rooms of the building. Outsiders can directly face the alarm control box, so the installation location is not always a safe place. Therefore, the present invention provides local protection measures to avoid malicious false alarms.

[0080] Specifically, the alarm controller actively performs local issuance of protection measures including the following steps:

[0081] h) Whether the door password entered by the current user at the alarm controller installation location is correct;

[0082] i) If the door password entered by the current user is incorrect, the door where the alarm controller is placed cannot be opened to prevent the alarm controller button from being accidentally touched; if the door password entered by the current user is correct, the login password is entered on the login interface of the alarm controller;

[0083] j) If the login password of the alarm controller is entered correctly, the next step of issuing can be carried out; if the login password is entered incorrectly, a failure prompt will be displayed and the login interface will be retained to prevent the alarm controller from being mistakenly sounded by malicious human operation;

[0084] k) The release operation includes: turning on the power of the sound amplifier, selecting the alarm release button to operate, the alarm release content button includes three types of air defense alarms and customized alarms, and clicking the button can directly release the alarm;

[0085] l) After the alarm is issued, close the door of the box where the alarm controller is placed to end the alarm notification.

[0086] S1.2.3. Based on S1.1, the alarm controller, central controller and alarm issuing client shall take proactive measures to intercept and resend the issuing instructions. During the alarm construction process, many suppliers directly send the instructions in plain text. If the instructions are intercepted and then continuously resent, there will be a risk of continuous false alarms.

[0087] The control issuance instruction of the present invention includes a double encryption factor to ensure that the control instruction will never be repeated since the system is activated, thereby eliminating the risk of interception and retransmission of air instructions. At the same time, the air protocol has complex encryption protection and deception code interference, which ensures that the protocol cannot be cracked to the greatest extent.

[0088] Specifically, the alarm controller, the central controller and the alarm issuing client actively perform issuing instruction interception and resending protection measures, including the following steps:

[0089] m) Start the encrypted distribution protocol: the user selects the distribution object and the distribution content, and when the distribution is normal, the selected distribution object and the distribution content are sent out after the communication server performs communication protocol combination and encryption;

[0090] n) Protocol function code combination: Combine the distribution object and distribution content into the protocol to form a control instruction, that is, a real control instruction. After the alarm controller terminal decrypts it, it will get the content of this control instruction, so that the alarm controller knows whether to sound, what to sound, arm / disarm, and power on / off of the power amplifier;

[0091] o) Double encryption factor for control instructions: obtain the project code and the issuance serial number at the same time, the project code is a fixed two-byte, and the issuance serial number is a four-byte that does not participate in encryption;

[0092] p) Generate control instructions; add a release serial number to the control instructions;

[0093] q) Double security of encryption and deception code: Obtain the key by project, encrypt the instruction by encryption method, the encryption factors involved in the encryption calculation include the key, project code and release sequence number, the encrypted instruction does not contain the four bytes of release sequence number; calculate the number of deception codes generated by the encrypted instruction according to the release sequence number, and automatically generate the specified number of deception code bytes after the deception code is inserted into the instruction position sequence;

[0094] r) Insert the deception code into the control instruction: according to the calculated position sequence of the deception code insertion instruction, the deception code is inserted into the encrypted instruction to form the control instruction officially issued in the air;

[0095] s) and issue encrypted control instructions.

[0096] The method for preventing false alarms triggered by environmental factors includes the following steps:

[0097] S2.1. The current transformer in the alarm controller detects the system current, and the preset current threshold is 1A; the alarm controller also obtains the noise decibel value of the decibel sensor in the external sound amplifier component, and the preset noise decibel threshold is 110dB;

[0098] S2.2. Based on S2.1, if the system current is greater than 1A, it is determined that the alarm controller has sounded the civil air defense alarm; if the noise decibel is greater than 110dB, it is also determined that the alarm controller has sounded the civil air defense alarm;

[0099] S2.3, based on S2.2, determining whether a remote alarm issuing instruction is currently received;

[0100] S2.4.1. Based on S2.3, if a remote alarm issuing instruction is received, return to step S2.1 and perform detection again;

[0101] S2.4.2. Based on S2.3, if no remote alarm issuing instruction is received, further detect whether there is an alarm controller control button operating to issue an alarm;

[0102] S2.5.1, based on S2.4.2, if it is detected that the control button of the alarm controller issues an alarm, return to step S2.1 to perform another test;

[0103] S2.5.2. Based on S2.4.2, if the alarm controller's control button is not detected to issue an alarm, it is determined that the alarm controller has sounded in error. The alarm controller immediately stops sounding and turns off the power amplifier, while recording a local log. The automatic operation log for preventing false alarms can be queried remotely at any time.

[0104] The alarm false alarm prevention control system based on digital radio communication is applied to the alarm false alarm prevention control method, including an alarm issuing client, a central controller, an alarm communication server, an alarm controller and an external sound amplifier component. The alarm issuing client is bidirectionally electrically connected to the central controller through the alarm communication server, the central controller is bidirectionally electrically connected to the alarm controller through the ultra-short wave digital radio, the alarm controller is bidirectionally electrically connected to the external sound amplifier component, and the alarm issuing client, the central controller and the alarm controller realize cross-linkage to prevent false alarms;

[0105] The alarm issuing client includes a computer, a client U shield and an alarm issuing interface. The computer is used to send control instructions and query instructions to the alarm communication server, and is also used to query, receive and display the reported information from the alarm communication server; the alarm issuing client U shield is used to identify whether the currently logged-in user is an authorized user and choose whether to continue to perform the work;

[0106] The alarm communication server is used to receive control instructions and query instructions from the alarm issuing client, and send the control instructions and query instructions to the central controller; the alarm communication server receives the reported information from the central controller, stores it in its own database, and then retrieves and displays it by the alarm issuing client; the alarm communication server also records the logs of all control instructions and query instructions;

[0107] The central controller includes a central mainboard, a controller U shield, a first ultra-short wave data transmission radio, a central display screen and an alarm issuing interface. The central mainboard is used to receive control instructions and query instructions from the alarm communication server, send reporting information to the alarm communication server, detect whether the controller U shield is inserted and whether the supporting information is correct, connect with the display screen to display information and control information, send control instructions and query instructions to the first ultra-short wave data transmission radio, and receive reporting information from the first ultra-short wave data transmission radio;

[0108] The alarm controller includes an alarm mainboard, a second ultra-short wave digital transmission radio, an alarm display screen, a playback amplifier, a control button, an internal audio speaker and an electronic switch. The alarm mainboard is used to read the current value of the current inductor in real time, read the switch status information of the electronic switch in real time, receive the control information of the control button, push the display information to the alarm display screen, push the audio signal to the playback amplifier and the internal audio speaker, receive the control command and query command from the first ultra-short wave digital transmission radio, and send the report information to the second ultra-short wave digital transmission radio;

[0109] The external sound amplifier component includes a decibel sensor and an external sound speaker. The decibel sensor is used to record the decibel value of noise near the external sound speaker and transmit the noise decibel value to the alarm mainboard for real-time reading.

[0110] The present invention uses a first ultrashort wave data transmission radio station and a second ultrashort wave data transmission radio station in a dedicated frequency band to transmit data between the alarm controller and the central controller, without using any network connection related to the international Internet (public network), thereby achieving the effect of preventing false alarms while ensuring the security of secrets.

[0111] The work of cross-linking and preventing false alarms between the alarm issuing client, the central controller and the alarm controller includes linkage arming / disarming and powering on and off of the power amplifier.

[0112] The functions of the alarm issuing interface of the alarm issuing client and the central controller are the same. The alarm issuing interface includes the functions of siren selection, alarm issuing, TTS intelligent voice issuing, remote power on / off of the power amplifier, remote arming / disarming and siren log record query.

[0113] like Figure 7As shown, the linkage arming / disarming works as follows: when the alarm controller needs to issue an alarm, the current arming / disarming status of the alarm controller is determined in advance. When the alarm issuing client or central controller chooses to remotely disarm, the alarm controller can arm locally; when the alarm controller chooses to disarm locally, the alarm issuing client or central controller can choose to arm remotely. The linkage arming / disarming function prevents remote issuance or local button operation. When the alarm is in the armed state, no matter whether it receives a remote alarm issuance command or a local alarm button issuance operation, it will not respond and will not sound an alarm or TTS intelligent voice.

[0114] Specifically, when an alarm needs to be issued, the current arming / disarming status of the alarm controller needs to be determined in advance. If the alarm controller is in the armed state, it needs to be disarmed before the alarm can be issued;

[0115] If the alarm controller is in the armed state, a remote disarm command must be issued first before the next alarm control command will take effect. Otherwise, the alarm controller will not execute the alarm control command.

[0116] After it comes into effect, the alarm control instructions are issued normally;

[0117] After receiving the control command, the alarm controller will sound the alarm as required until the alarm is sounded;

[0118] After the alarm is sounded, a remote arming command is issued to put the alarm controller in the arming state;

[0119] Press the button on the alarm control box panel to sound the alarm;

[0120] If the alarm controller is in the armed state, you need to press the local button to disarm the alarm, so that the next alarm button will take effect. Otherwise, the alarm controller will execute the button operation to release the alarm.

[0121] Press the button normally to send out the alarm;

[0122] After receiving the key information, the alarm controller will sound as required until the alarm is sounded;

[0123] After the alarm is sounded, press the local button to arm the alarm controller.

[0124] The power-on and power-off operation of the sound amplifier is as follows: when the alarm controller needs to issue an alarm, the current state of the sound amplifier of the alarm controller is determined in advance. When the alarm issuing client or the central controller chooses to power on the remote sound amplifier, the alarm controller can power off the local amplifier; when the alarm controller chooses to power on the local sound amplifier, the alarm issuing client or the central controller can choose to power off the remote amplifier.

[0125] The present invention automatically detects the system current and the sound playback decibel threshold through the alarm controller to determine whether it is a false alarm. If it is a false alarm, the sound playback is immediately stopped and the power supply of the power amplifier is turned off, thereby avoiding the adverse effects of the false alarm. At the same time, in order to prevent the system from being maliciously operated or hijacked to issue an alarm, the remote issuance operation has four legal operation judgments, and the local issuance operation has two legal operation judgments; and the control issuance instruction includes a double encryption factor to ensure that the control instruction will never be repeated since the system is enabled, thereby eliminating the risk of interception and retransmission of air commands. At the same time, the air protocol has complex encryption protection and deception code interference, which guarantees the protocol from being cracked to the greatest extent. In addition, the present invention can also realize remote and local linkage protection, including arming / disarming function and power on / off function of power amplifier. Through the arming / disarming function, erroneous operation of remote issuance or local buttons can be prevented. When the alarm controller is in the armed state, no matter whether it receives a remote alarm issuance instruction or a local alarm button issuance operation, it will not respond and will not sound the alarm or TTS intelligent voice; through the power on / off function of the playback power amplifier, erroneous operation of remote issuance or local buttons can also be prevented. When the playback power amplifier of the alarm controller is in the power-off state, no matter whether it receives a remote alarm issuance instruction or a local alarm button issuance operation, the alarm or TTS intelligent voice can only be sounded in the internal speaker of the alarm controller, and will not sound through the external sound power amplifier to cause adverse effects.

[0126] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of rights of the present invention. Therefore, modifications, equivalent changes, improvements, etc. made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. An alarm control system for preventing false alarms based on digital radio communication, characterized in that: It includes an alarm issuing client, a central controller, an alarm communication server, an alarm controller and an external sound power amplifier component. The alarm issuing client is bidirectionally electrically connected to the central controller through the alarm communication server, the central controller is bidirectionally electrically connected to the alarm controller through an ultrashort wave data transmission radio, the alarm controller is bidirectionally electrically connected to the external sound power amplifier component, and the alarm issuing client, the central controller and the alarm controller realize cross-linkage to prevent false alarms; The alarm issuing client includes a computer, a client U shield and an alarm issuing interface. The computer is used to send control instructions and query instructions to the alarm communication server, and is also used to query, receive and display the reported information from the alarm communication server; the alarm issuing client U shield is used to identify whether the currently logged-in user is an authorized user and choose whether to continue to perform the work; The alarm communication server is used to receive control instructions and query instructions from the alarm issuing client, and send the control instructions and query instructions to the central controller; the alarm communication server receives the reported information from the central controller, stores it in its own database, and then retrieves and displays it by the alarm issuing client; the alarm communication server also records the logs of all control instructions and query instructions; The central controller includes a central mainboard, a controller U shield, a first ultra-short wave data transmission radio, a central display screen and an alarm issuing interface. The central mainboard is used to receive control instructions and query instructions from the alarm communication server, send reporting information to the alarm communication server, detect whether the controller U shield is inserted and whether the supporting information is correct, connect with the display screen to display information and control information, send control instructions and query instructions to the first ultra-short wave data transmission radio, and receive reporting information from the first ultra-short wave data transmission radio; The alarm controller includes an alarm mainboard, a second ultra-short wave digital transmission radio, an alarm display screen, a playback amplifier, a control button, an internal audio speaker and an electronic switch. The alarm mainboard is used to read the current value of the current inductor in real time, read the switch status information of the electronic switch in real time, receive control information of the control button, push display information to the alarm display screen, push audio signals to the playback amplifier and the internal audio speaker, receive control instructions and query instructions from the first ultra-short wave digital transmission radio, and send reporting information to the second ultra-short wave digital transmission radio; The external sound amplifier assembly includes a decibel sensor and an external sound loudspeaker. The decibel sensor is used to record the decibel value of noise near the external sound loudspeaker and transmit the decibel value of noise to the alarm mainboard for real-time reading. The cross-linkage prevention work between the alarm issuing client, the central controller and the alarm controller includes the linkage arming / disarming work and the power on / off work of the sound amplifier. The linkage arming / disarming operation is as follows: when the alarm controller needs to issue an alarm, the current arming / disarming state of the alarm controller is determined in advance, and when either the alarm issuing client or the central controller chooses to remotely disarm, the alarm controller can arm locally; When the alarm controller chooses to disarm locally, the alarm issuing client and the central controller can choose to arm remotely; The power-on and power-off operation of the sound amplifier is as follows: when the alarm controller needs to issue an alarm, the current state of the sound amplifier of the alarm controller is determined in advance, and when the alarm issuing client or the central controller chooses to power on the remote sound amplifier, the alarm controller can power off the local sound amplifier; when the alarm controller chooses to power on the local sound amplifier, the alarm issuing client or the central controller can choose to power off the remote sound amplifier; When the alarm controller is in the armed state, no matter whether it receives a remote alarm issuing command or a local alarm button issuing operation, it will not respond and will not sound the alarm or TTS intelligent voice; when the alarm controller playback amplifier is in the power-off state, no matter whether it receives a remote alarm issuing command or a local alarm button issuing operation, the alarm or TTS intelligent voice can only be sounded through the alarm controller's internal speaker, and will not be sounded through the external audio amplifier.

2. The alarm false alarm prevention control system based on digital radio communication according to claim 1 is characterized in that: The alarm issuing client has the same function as the alarm issuing interface of the central controller. The alarm issuing interface includes the functions of alarm selection, alarm issuing, TTS intelligent voice issuing, remote power on / off of the power amplifier, remote arming / disarming and alarm log record query.

3. The alarm false alarm prevention control method based on digital radio communication is applied to the alarm false alarm prevention control system based on digital radio communication as claimed in any one of claims 1 to 2, characterized in that: It includes two methods running in parallel, a method for preventing false alarms triggered by human factors and a method for preventing false alarms triggered by environmental factors; The method for preventing false alarms caused by human factors includes the following steps: S1.

1. The alarm controller, central controller and alarm issuing client are operating normally; S1.2.

1. Based on S1.1, the central controller and the alarm issuing client proactively issue protection measures remotely; S1.2.

2. Based on S1.1, the alarm controller takes the initiative to issue protective measures locally; S1.2.3, based on S1.1, the alarm controller, central controller and alarm issuing client take the initiative to implement issuing command interception and resending protection measures; The method for preventing false alarms from being triggered by environmental factors comprises the following steps: S2.

1. The current transformer in the alarm controller detects the system current, and the preset current threshold is 1A; the alarm controller also obtains the noise decibel value of the decibel sensor in the external sound amplifier component, and the preset noise decibel threshold is 110dB; S2.

2. Based on S2.1, if the system current is greater than 1A, it is determined that the alarm controller has sounded the civil air defense alarm; if the noise decibel is greater than 110dB, it is also determined that the alarm controller has sounded the civil air defense alarm; S2.3, based on S2.2, determining whether a remote alarm issuing instruction is currently received; S2.4.

1. Based on S2.3, if a remote alarm issuing instruction is received, return to step S2.1 and perform detection again; S2.4.

2. Based on S2.3, if no remote alarm issuing instruction is received, further detect whether there is an alarm controller control button operating to issue an alarm; S2.5.1, based on S2.4.2, if it is detected that the control button of the alarm controller issues an alarm, return to step S2.1 to perform another test; S2.5.

2. Based on S2.4.2, if the alarm controller's control button is not detected to issue an alarm, it is determined that the alarm controller has sounded in error. The alarm controller immediately stops sounding and turns off the power amplifier, while recording a local log. The automatic operation log for preventing false alarms can be queried remotely at any time.

4. The alarm false alarm prevention control method based on digital radio communication according to claim 3 is characterized in that: In step S1.2.1, the central controller and the alarm issuing client actively remotely issue protective measures, including the following steps: a) The current user enters the central controller or alarm issuing client login page and performs the first level system user login determination; b) Enter the user name and password. After the system determines that they are correct, it will enter the system main interface. If the user name or password is incorrect, it will prompt an error and stay on the login interface. c) After entering the distribution interface, the current user can select the distribution object, distribution content and other customized alarm information; the user can also choose to distribute TTS intelligent voice; d) After selecting the distribution object and the content to be sent, click the distribution button. The central controller or alarm distribution client automatically detects whether the controller U shield or client U shield has been inserted. The controller U shield or client U shield is bound to the current user. If it is another unauthorized user, it will be judged as an invalid U shield. After prompting an error message, the distribution work will not be executed further; if the controller U shield or client U shield bound to the current user has been inserted, the distribution object and distribution content confirmation window will pop up to perform the next step; e) The current user confirms the recipient and content of the distribution in the recipient and content confirmation window. If the recipient and / or content of the distribution are incorrect, close the pop-up window and reselect the recipient and content of the distribution. If the recipient and content of the distribution are correct, click OK to proceed to the next step. f) After confirming that the distribution object and distribution content are correct, enter the distribution password. The distribution password is only valid for the current user. If the entered distribution password is correct, proceed to the next step, otherwise return to the distribution interface in step c; g) After checking that the input distribution password is correct, the information formed by the selected distribution object and distribution content is sent to the alarm communication server, and the control instruction is generated before distribution.

5. The alarm false alarm prevention control method based on digital radio communication according to claim 4 is characterized in that: In step S1.2.2, the alarm controller actively performs local issuance of protection measures, including the following steps: h) Whether the door password entered by the current user at the alarm controller installation location is correct; i) If the door password entered by the current user is incorrect, the door where the alarm controller is placed cannot be opened to prevent the alarm controller button from being accidentally touched; if the door password entered by the current user is correct, the login password is entered on the login interface of the alarm controller; j) If the login password of the alarm controller is entered correctly, the next step of issuing can be carried out; if the login password is entered incorrectly, a failure prompt will be displayed and the login interface will be retained to prevent the alarm controller from being mistakenly sounded by malicious human operation; k) The release operation includes: turning on the power of the sound amplifier, selecting the alarm release button to operate, the alarm release content button includes three types of air defense alarms and customized alarms, and clicking the button can directly release the alarm; l) After the alarm is issued, close the door of the box where the alarm controller is placed to end the alarm notification.

6. The alarm false alarm prevention control method based on digital radio communication according to claim 5 is characterized in that: In step S1.2.3, the alarm controller, central controller and alarm issuing client actively perform issuing instruction interception and resending protection measures, including the following steps: m) Start the encrypted distribution protocol: the user selects the distribution object and the distribution content, and when the distribution is normal, the selected distribution object and the distribution content are sent out after the communication server performs communication protocol combination and encryption; n) Protocol function code combination: Combine the distribution object and distribution content into the protocol to form a control instruction, that is, a real control instruction. After the alarm controller terminal decrypts it, it will get the content of this control instruction, so that the alarm controller knows whether to sound, what to sound, arm / disarm, and power on / off of the power amplifier; o) Double encryption factor for control instructions: obtain the project code and the issuance serial number at the same time, the project code is a fixed two-byte, and the issuance serial number is a four-byte that does not participate in encryption; p) Generate control instructions; add the issuance serial number to the control instructions; q) Double security of encryption and deception code: Obtain the key by project, encrypt the instruction by encryption method, the encryption factors involved in the encryption calculation include the key, project code and release sequence number, the encrypted instruction does not contain the four bytes of release sequence number; calculate the number of deception codes generated by the encrypted instruction according to the release sequence number, and automatically generate the specified number of deception code bytes after the deception code is inserted into the instruction position sequence; r) Insert the deception code into the control instruction: according to the calculated position sequence of the deception code insertion instruction, the deception code is inserted into the encrypted instruction to form the control instruction officially issued in the air; s) and issue encrypted control instructions.

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