An earthquake early warning information broadcasting system

Abstract

The invention discloses an earthquake early warning information broadcasting system, which belongs to the field of earthquake early warning and solves the problem of how to realize early detection of seismic waves when an earthquake occurs and prolong the early warning response time, and at the same time make a safer and more effective strategy for the emergency stop of the elevator when only the arrival of the P wave is identified; the system comprises: an earthquake monitoring and analysis module, which analyzes and judges whether the operation of the elevator of the target building group will be threatened by the earthquake according to the earthquake parameter time series data detected by a plurality of earthquake monitoring devices arranged around the target building group, and generates an early warning signal of the corresponding seismic wave type; the elevator earthquake early warning analysis module obtains the early warning signal, analyzes and obtains the operation control instruction of the corresponding elevator in the target building group, and sends the obtained operation control instruction of the corresponding elevator to the elevator controller of the corresponding elevator, and at the same time generates an earthquake early warning prompt signal and sends it to the voice announcer of the corresponding elevator.

Description

Technical Field

[0001] The invention belongs to the field of elevator earthquake early warning, and in particular is an earthquake early warning information broadcasting system. Background Art

[0002] Elevators, as vertical transportation tools, have become an indispensable part of daily life. However, earthquakes, as unpredictable natural disasters, pose a severe challenge to the safety of elevator systems. When an earthquake occurs, buildings will experience severe vibrations, and elevator systems may be affected by a variety of complex factors. In order to ensure the safety of elevator passengers and the stable operation of elevator equipment, it is particularly important to design an effective earthquake early warning and emergency response system.

[0003] Existing elevator earthquake early warning methods usually rely on earthquake monitoring devices installed inside buildings, so they cannot achieve early detection before P waves reach the building, shortening the system's early warning response time. In addition, there are also deficiencies in the analysis of seismic wave characteristics, failing to accurately distinguish the different effects of P waves, S waves, and surface waves. Especially in the early stages of an earthquake, when only P waves are identified, there is a lack of further early warning and response strategies, and the time difference in seismic wave propagation cannot be fully utilized for effective response. Even if there is sufficient early warning time, there is a lack of safer and more effective strategies for elevator parking and early warning. To this end, the present invention proposes an earthquake early warning information broadcasting system. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes an earthquake early warning information broadcasting system, which solves the problem of how to achieve early detection of seismic waves when an earthquake occurs to extend the early warning response time, and at the same time make a safer and more effective strategy for the emergency stop of the elevator when only the arrival of the P wave is recognized.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An earthquake early warning information broadcasting system, comprising:

[0007] An earthquake monitoring device is used to detect and obtain the earthquake parameter time series data of the target building complex in real time, and transmit it to the earthquake monitoring and analysis module;

[0008] The earthquake monitoring and analysis module is used to analyze and determine whether the elevator operation of the target building complex will be threatened by the earthquake based on the earthquake parameter time series data detected by a number of earthquake monitoring devices evenly arranged around the target building complex, and generate an early warning signal of the corresponding earthquake wave type, mark it with the unique identifier of the earthquake monitoring device and send it to the elevator earthquake early warning analysis module; the earthquake monitoring and analysis module is provided with a number of monitoring processing units;

[0009] The elevator earthquake early warning analysis module is used to analyze and obtain the operation control instructions of the corresponding elevators in the target building complex according to the early warning signals obtained from the earthquake monitoring and analysis module, and send the obtained operation control instructions of the corresponding elevators to the elevator controllers of the corresponding elevators, and at the same time generate earthquake early warning prompt signals and send them to the voice announcers of the corresponding elevators; the elevator earthquake early warning analysis module includes an early warning preprocessing unit and a plurality of elevator operation analysis units;

[0010] An elevator controller, used to control the operation of the corresponding elevator based on the acquired elevator operation control instruction;

[0011] The voice announcer is used to broadcast earthquake early warning prompt signals according to pre-prepared earthquake voice broadcast sentences.

[0012] Furthermore, the earthquake monitoring device detects and obtains the acceleration of the X-axis, Y-axis and Z-axis in real time. The X-axis acceleration and the Y-axis acceleration refer to the acceleration in the horizontal direction, and the X-axis acceleration and the Y-axis acceleration are perpendicular to each other; the Z-axis acceleration refers to the acceleration perpendicular to the horizontal direction and is consistent with the direction of gravity.

[0013] Furthermore, the monitoring processing unit is used to process the acquired earthquake parameter time series data of the earthquake monitoring device corresponding to the unique identifier; including:

[0014] Step Q1: acquiring earthquake parameter time series data detected by a corresponding earthquake monitoring device according to a preset time period; performing denoising and filtering on the acquired corresponding earthquake parameter time series data; the earthquake parameter time series data includes a unique identifier of the earthquake monitoring device and the detected acceleration time series data; the acceleration time series data includes an X-axis acceleration time series, a Y-axis acceleration time series and a Z-axis acceleration time series;

[0015] Step Q2: respectively calculate the acceleration amplitude values ​​corresponding to the X-axis acceleration time series, the Y-axis acceleration time series and the Z-axis acceleration time series; respectively compare the calculated acceleration amplitude values ​​of each axis with the preset P-wave amplitude warning range, the preset S-wave amplitude warning range and the preset surface wave amplitude warning range; if only the acceleration amplitude value of the Z-axis belongs to the preset P-wave amplitude warning range, then generate a first comparison result displayed as a P-wave warning feature; if only the acceleration amplitude values ​​of the X-axis and the Y-axis belong to the preset S-wave amplitude warning range, then generate a first comparison result displayed as an S-wave warning feature; if the acceleration amplitude values ​​of the X-axis, the Y-axis and the Z-axis belong to the preset surface wave amplitude warning range, then generate a first comparison result displayed as a surface wave warning feature;

[0016] Step Q3: Perform fast Fourier transform on the X-axis acceleration time series, the Y-axis acceleration time series and the Z-axis acceleration time series respectively to obtain the frequency domain signal of each axis, and calculate the amplitude spectrum of each axis; obtain the power spectrum of each axis by calculating the square of the amplitude spectrum; if only the ratio of the power spectrum energy of the frequency component of the preset P-wave frequency warning range of the Z-axis to the total energy of the corresponding axis is greater than the preset ratio threshold, then a second comparison result displayed as a P-wave warning feature is generated; if only the ratio of the power spectrum energy of the frequency component of the preset S-wave frequency warning range of the X-axis and the Y-axis to the total energy of the corresponding axis is greater than the preset ratio threshold, then a second comparison result displayed as an S-wave warning feature is generated; if the ratio of the power spectrum energy of the frequency component of the preset surface wave frequency warning range of the X-axis, the Y-axis and the Z-axis to the total energy of the corresponding axis is greater than the preset ratio threshold, then a second comparison result displayed as a surface wave warning feature is generated;

[0017] Step Q4: using a peak detection algorithm to identify the peak values ​​of the waveforms to which the X-axis acceleration time series, the Y-axis acceleration time series and the Z-axis acceleration time series belong, calculating the time interval from peak to peak in the waveform of the corresponding axis acceleration time series, and marking the time interval as the waveform period of the corresponding axis acceleration time series; if only the waveform period of the Z-axis is within the preset P-wave waveform period warning range, a third comparison result displayed as a P-wave warning feature is generated; if only the waveform periods of the X-axis and the Y-axis are within the preset S-wave waveform period warning range, a third comparison result displayed as an S-wave warning feature is generated; if the waveform periods of the X-axis, the Y-axis and the Z-axis are within the preset surface wave waveform period warning range, a third comparison result displayed as a surface wave warning feature is generated;

[0018] Step Q5: Comprehensively compare the results of the three comparisons. If the results of the three comparisons are the same, it is determined that the elevator operation of the current target building complex is threatened by the earthquake, and a warning signal of the corresponding seismic wave type is generated and marked with the unique identifier of the seismic monitoring device and sent to the elevator earthquake warning analysis module; if the results of the three comparisons are different, no warning signal is generated; the seismic wave types include P waves, S waves and surface waves.

[0019] Furthermore, the early warning preprocessing unit is used to confirm the type of seismic waves contained in the early warning signals of all the unique identifiers of the seismic monitoring devices obtained. If the type of seismic waves contained in the early warning signals of all or part of the unique identifiers of the seismic monitoring devices are S waves or surface waves, a forced braking early warning signal is generated and sent to all elevator operation analysis units; if the type of seismic waves contained in the early warning signals of all or part of the unique identifiers of the seismic monitoring devices are P waves, the minimum predicted time of the S wave arrival at the target building complex is calculated and sent to all elevator operation analysis units.

[0020] Furthermore, the method for obtaining the minimum predicted value of the S wave arrival time of the target building group is as follows:

[0021] Obtain the earthquake early warning signal from the local earthquake monitoring center and the initial detection time point of the earthquake parameter time series data of each earthquake monitoring device in the target building complex;

[0022] Calculate the time difference between the initial occurrence time point of the earthquake source included in the earthquake early warning signal of the local earthquake monitoring center and the initial detection time point in the real-time earthquake parameter time series data of each earthquake monitoring device, and obtain the P wave arrival time value detected by each earthquake monitoring device;

[0023] Calculate the product of the P wave velocity and the P wave arrival time value detected by each seismic monitoring device respectively, obtain the distance between the earthquake source and each seismic monitoring device, and mark the distance as the seismic distance of the corresponding seismic monitoring device;

[0024] Calculate the quotient of the earthquake distance and the S-wave velocity of each earthquake monitoring device respectively, and obtain the propagation time value of the S-wave that will reach each earthquake monitoring device;

[0025] Calculate the sum of the P-wave arrival time value and the S-wave propagation time value of each seismic monitoring device respectively, and obtain the S-wave arrival prediction time of each seismic monitoring device;

[0026] The S-wave arrival prediction times obtained from all earthquake monitoring devices are arranged in ascending order, and the one with the smallest value is selected as the minimum S-wave arrival time prediction value of the target building complex.

[0027] Furthermore, each elevator operation analysis unit is associated with a corresponding elevator in the target building complex. The elevator operation analysis unit is used to analyze and obtain the elevator operation control instructions based on the acquired forced braking warning signal or the predicted value of the minimum arrival time of the S wave of the target building complex, and send them to the elevator controller of the corresponding elevator, while generating an earthquake warning prompt signal and sending it to the voice announcer of the corresponding elevator.

[0028] Furthermore, when the elevator operation analysis unit obtains a forced braking warning signal, the position of the corresponding elevator is obtained; if the current position of the corresponding elevator is at a floor position, a pause and door opening control command signal is generated and sent to the corresponding elevator controller; if the current position of the corresponding elevator is between floors, a pause control command signal is generated and sent to the corresponding elevator controller; at the same time, an earthquake warning prompt signal is generated and sent to the voice announcer of the corresponding elevator.

[0029] Furthermore, when the elevator operation analysis unit obtains the predicted value of the minimum arrival time of the S wave of the target building group, the load W of the corresponding elevator and the speed of the elevator when it is empty are obtained. ;

[0030] Case 1: When the load W of the corresponding elevator is greater than 0, then:

[0031] According to the formula , get the actual running speed V of the current corresponding elevator; where, represents the maximum load of the corresponding elevator; k represents the influence factor of load on the elevator running speed;

[0032] Calculate the maximum floor I that the elevator can reach within the minimum predicted time value TY of the S wave arrival; the calculation formula is:

[0033] ;

[0034] Where i represents the number of the floor the elevator is currently on, and i≥1; H represents the distance between floors; T1, T2, and T3 represent the acceleration time, deceleration time, and door opening time of the elevator, respectively;

[0035] According to the calculated maximum floor I that the elevator can reach within the minimum predicted time of the S wave, if the value of I is greater than or equal to 1, a control instruction for driving downward and stopping at the Ith floor and opening the door is generated and sent to the elevator controller of the corresponding elevator; if the value of I is less than 1, a control instruction for driving downward and stopping at the ground floor and opening the door is generated and sent to the elevator controller of the corresponding elevator; at the same time, an earthquake early warning prompt signal is generated and sent to the voice announcer of the corresponding elevator;

[0036] Case 2: When the load W of the corresponding elevator is equal to 0, then:

[0037] Get the i-th floor that the corresponding elevator is currently on or the i-th floor that is closest to it; compare the numbers of the i-th floor with those of all the safety floors of the building, and select the safety floor closest to the i-th floor as the current nearest safety floor of the corresponding elevator;

[0038] If the corresponding elevator is currently above the nearest safe floor, calculate the maximum floor I that the empty elevator can reach within the minimum predicted time of the S wave arrival. The calculation formula is:

[0039] ;

[0040] The calculated maximum floor I that the unloaded elevator can reach within the minimum predicted time of the S wave is compared with the number of the nearest safe floor; if the calculated floor I is at or above the nearest safe floor, a control instruction is generated to drive downward, stop at the I floor and open the door, which is sent to the elevator controller of the corresponding elevator; if the calculated floor I is lower than the nearest safe floor, a control instruction is generated to drive downward, stop at the nearest safe floor and open the door, which is sent to the elevator controller of the corresponding elevator; at the same time, an earthquake early warning prompt signal is generated and sent to the voice announcer of the corresponding elevator;

[0041] If the current elevator is at the nearest safe floor, a control command to stop at the current floor and open the door is generated and sent to the elevator controller of the corresponding elevator; at the same time, an earthquake early warning prompt signal is generated and sent to the voice announcer of the corresponding elevator;

[0042] If the corresponding elevator is currently below the nearest safe floor, calculate the maximum floor I that the empty elevator can reach within the minimum predicted time of the S wave arrival; the calculation formula is:

[0043] ;

[0044] The calculated maximum floor I that an empty elevator can reach within the minimum predicted time of the S wave is compared with the number of the nearest safe floor; if the calculated floor I is at or below the nearest safe floor, a control instruction for driving upward, stopping at the Ith floor and opening the door is generated and sent to the elevator controller of the corresponding elevator; if the calculated floor I is higher than the nearest safe floor, a control instruction for driving upward, stopping at the nearest safe floor and opening the door is generated and sent to the elevator controller of the corresponding elevator; at the same time, an earthquake early warning prompt signal is generated and sent to the voice announcer of the corresponding elevator.

[0045] Compared with the prior art, the present invention has the following beneficial effects:

[0046] 1. In the present invention, several earthquake monitoring devices are arranged around the target building complex to detect the earthquake parameter time series data of the area where the target building complex is located in real time. All the real-time earthquake parameter time series data obtained are analyzed by the earthquake monitoring and analysis module to determine whether the elevator operation of the target building complex is threatened by the earthquake, and generate an early warning signal of the corresponding earthquake wave type; this method can monitor the earthquake activity in the target area in real time and capture the characteristics of the earthquake wave in time. Different from the existing method of installing earthquake monitoring devices inside the building, the arrival of the P wave can be detected in advance. In addition, multiple earthquake monitoring devices are arranged around the target building complex, which can cover the earthquake wave transmission paths in different directions, effectively identify earthquake waves from different directions, and improve the accuracy of earthquake threat judgment. By analyzing the data of multiple monitoring points, the possibility of false alarms can be reduced. The earthquake monitoring and analysis module can automatically process and analyze a large amount of earthquake parameter time series data, and can determine whether it poses a threat to the elevator operation without human intervention, and automatically generate an early warning signal to reduce human delay. This method can increase or decrease the data and layout range of the earthquake monitoring device according to the scale and needs of the building complex to adapt to different geographical environments and earthquake risk levels.

[0047] 2. In the present invention, the earthquake wave type that threatens the operation of the elevator is analyzed and obtained through the earthquake monitoring and analysis module; if the earthquake wave type is S wave or surface wave, the elevator is directly controlled to pause and open the door or pause; if the earthquake wave type is P wave, the minimum time prediction value of the S wave reaching the target building group is calculated to control the emergency stop of the corresponding elevator of the target building group; while controlling the operation of the elevator, an earthquake early warning prompt signal is sent to the voice announcer for language reminder; this efficient early warning and response mechanism ensures that the elevator system can respond in the shortest time, reduce the threat of earthquakes to the operation of the elevator and the safety of passengers, and can make the most effective response at different stages of the earthquake through differentiated processing methods. In addition, the system can intelligently calculate the floor where the elevator should stop before the arrival of the S wave when the P wave arrives according to the current load condition, operating status and floor position of the elevator, and execute the optimal parking strategy. For unloaded elevators, reasonable parking arrangements can be made according to the safety layer setting of the building, which not only improves the operation efficiency of the elevator, but also further ensures the safety of people inside and outside the elevator; improves the accuracy of the prediction, and ensures the timeliness and rationality of emergency measures. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 The present invention is a schematic diagram of the structure of an earthquake early warning information broadcasting system. DETAILED DESCRIPTION

[0049] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] like Figure 1 As shown, an earthquake early warning information broadcasting system includes: an earthquake monitoring device, an earthquake monitoring and analysis module, an elevator earthquake early warning analysis module, an elevator controller and a voice broadcaster;

[0051] The earthquake monitoring device is arranged around the target building complex, and is used to detect and obtain the earthquake parameter time series data of the area where the target building complex is located in real time, and transmit it to the earthquake monitoring and analysis module;

[0052] The earthquake monitoring and analysis module is used to analyze and determine whether the elevator operation of the target building complex will be threatened by an earthquake based on the earthquake parameter time series data detected by a number of earthquake monitoring devices evenly arranged around the target building complex, and generate an early warning signal of the corresponding earthquake wave type, mark it with the unique identifier of the earthquake monitoring device, and send it to the elevator earthquake early warning analysis module;

[0053] The elevator earthquake early warning analysis module is used to analyze and obtain the operation control instructions of the corresponding elevators in the target building complex according to the early warning signal obtained from the earthquake monitoring and analysis module, and send the obtained operation control instructions of the corresponding elevators to the elevator controller of the corresponding elevators, and at the same time generate an earthquake early warning prompt signal and send it to the voice announcer of the corresponding elevator;

[0054] The elevator controller is used to control the operation of the corresponding elevator based on the acquired elevator operation control instruction;

[0055] The voice broadcasting device is used to broadcast earthquake early warning prompt signals according to the earthquake voice broadcasting sentences prepared in advance;

[0056] It can be understood that the earthquake monitoring device can be a three-axis accelerometer specially used for earthquake detection; the three-axis accelerometer is used to detect and obtain the acceleration of the X-axis, Y-axis and Z-axis in real time. Generally, the X-axis acceleration and the Y-axis acceleration refer to the acceleration in the horizontal direction, and the X-axis acceleration and the Y-axis acceleration are perpendicular to each other; the Z-axis acceleration refers to the acceleration perpendicular to the horizontal direction, which is usually consistent with the direction of gravity;

[0057] In an embodiment of the present invention, a plurality of earthquake monitoring devices are arranged around a target building complex, and the target building complex may be a residential area, a park, or a commercial building complex, etc. A plurality of earthquake construction devices are evenly arranged around the outer edge of the target building complex, and protective measures need to be taken at the locations where the earthquake construction devices are arranged to prevent the earthquake construction devices from being damaged;

[0058] Among them, according to the earthquake parameter time series data detected by several earthquake monitoring devices installed around the target building complex, it is analyzed and judged whether the elevator operation of the target building complex will be threatened by the earthquake; it is understandable that the earthquake source may occur in the area where the target building complex is located, or it may occur in the area outside the target building complex; if the earthquake source occurs in the area where the target building complex is located, the P wave and the S wave will arrive almost at the same time, but the amplitude, frequency and waveform characteristics of the P wave and the S wave can be analyzed to judge whether the earthquake will threaten the elevator operation in the target building complex; if the earthquake source occurs in the target building complex, the P wave and the S wave will arrive at the same time, and the S wave and the P wave and the S ... If the P wave arrives in the area outside the target building complex, the P wave arrives before the S wave, and a few seconds or even tens of seconds of advance warning time can be obtained. The characteristic analysis of the P wave can be combined to determine whether the earthquake will pose a threat to the operation of elevators in the target building complex. Among them, seismic wave types include P waves, S waves and surface waves. The propagation speed of P waves is the fastest, and the propagation speed of surface waves is the slowest. When the P wave is monitored, there is time for elevator earthquake warning and evacuation of people. It should be noted that when the relevant characteristics of the S wave or surface wave are monitored to be in the corresponding warning range, there is basically no time to control the elevator to stop at a safe floor and evacuate the crowd.

[0059] The earthquake monitoring and analysis module is used to analyze and determine whether the elevator operation of the target building complex will be threatened by an earthquake based on the earthquake parameter time series data detected by a number of earthquake monitoring devices set around the target building complex, and generate an early warning signal of the corresponding earthquake wave type, mark it with the unique identifier of the earthquake monitoring device, and send it to the elevator earthquake early warning analysis module;

[0060] Specifically, the earthquake monitoring and analysis module is provided with a plurality of monitoring and processing units, and the monitoring and processing units are used to process the earthquake parameter time series data of the earthquake monitoring device corresponding to the unique identifier acquired; including:

[0061] Step Q1: Acquire the earthquake parameter time series data detected by the corresponding earthquake monitoring device according to the preset time period; perform denoising and filtering on the acquired corresponding earthquake parameter time series data to reduce the influence of noise; it can be understood that the earthquake parameter time series data includes the equipment information of the earthquake monitoring device itself and the detected acceleration time series data; the equipment information includes a unique identifier; the acceleration time series data includes an X-axis acceleration time series, a Y-axis acceleration time series and a Z-axis acceleration time series; wherein the unique identifier can be an ID, and the unique identifier of each earthquake monitoring device is different; in addition, the X-axis The acceleration time series, Y-axis acceleration time series and Z-axis acceleration time series refer to data sequences in which the acceleration values ​​of the X-axis, Y-axis and Z-axis are arranged in chronological order, respectively; and the acceleration values ​​in each axis acceleration time series are recorded at the same time point; wherein the preset time period refers to the time period in which the earthquake monitoring device acquires earthquake parameter time series data, and the preset time period can be a few milliseconds or 1 second; it can be understood that the earthquake monitoring device detects earthquake parameter data at fixed time intervals, and generates a time series from the data of each time point detected within the preset time period and transmits it to the earthquake monitoring analysis module for analysis and processing;

[0062] Step Q2: respectively calculating the acceleration amplitude values ​​corresponding to the X-axis acceleration time series, the Y-axis acceleration time series, and the Z-axis acceleration time series; the calculation method may be to subtract the minimum acceleration value from the maximum acceleration value in the acceleration time series of the corresponding axis, and use the calculated difference as the acceleration amplitude value of the corresponding axis; or the root mean square value of the acceleration time series of the corresponding axis is calculated, and the calculated root mean square value of the acceleration is used as the acceleration amplitude value of the corresponding axis;

[0063] Compare the calculated acceleration amplitude value of each axis with the preset P-wave amplitude warning range, the preset S-wave amplitude warning range and the preset surface wave amplitude warning range respectively; determine what type of seismic wave warning feature is displayed by the seismic parameter time series data analysis obtained by the seismic monitoring device with the corresponding unique identifier;

[0064] If only the acceleration amplitude value of the Z axis falls within the preset P wave amplitude warning range, a first comparison result displayed as a P wave warning feature is generated;

[0065] If only the acceleration amplitude values ​​of the X-axis and the Y-axis fall within the preset S-wave amplitude warning range, a first comparison result displayed as an S-wave warning feature is generated;

[0066] If the acceleration amplitude values ​​on the X-axis, Y-axis and Z-axis belong to the preset surface wave amplitude warning range, a first comparison result displayed as a surface wave warning feature is generated;

[0067] Step Q3: Perform fast Fourier transform on the X-axis acceleration time series, the Y-axis acceleration time series and the Z-axis acceleration time series respectively, obtain the frequency domain signal of each axis, and calculate the amplitude spectrum of each axis; obtain the power spectrum of each axis by calculating the square of the amplitude spectrum; based on the energy distribution of the power spectrum of the corresponding axis, calculate the ratio of the power spectrum energy of the frequency components within the preset P-wave frequency warning range, the preset S-wave frequency warning range and the preset surface wave frequency warning range to the total energy of the corresponding axis, and judge whether the ratio is greater than the preset ratio threshold; wherein the amplitude spectrum refers to the data of the amplitude size of different frequency components of the signal in the frequency domain, which is the prior art and will not be elaborated here; the preset ratio threshold can be 0.7;

[0068] If the ratio of the power spectrum energy of the frequency components in the preset P-wave frequency warning range of the Z-axis to the total energy of the corresponding axis is greater than the preset ratio threshold, a second comparison result displayed as a P-wave warning feature is generated;

[0069] If only the ratio of the power spectrum energy of the frequency components in the preset S-wave frequency warning range of the X-axis and the Y-axis to the total energy of the corresponding axis is greater than the preset ratio threshold, a second comparison result displayed as an S-wave warning feature is generated;

[0070] If the ratio of the power spectrum energy of the frequency components in the preset surface wave frequency warning range of the X-axis, Y-axis and Z-axis to the total energy of the corresponding axis is greater than the preset ratio threshold, a second comparison result displayed as a surface wave warning feature is generated;

[0071] Step Q4: using a peak detection algorithm to identify the peak values ​​of the waveforms to which the X-axis acceleration time series, the Y-axis acceleration time series and the Z-axis acceleration time series belong, calculating the time interval from the peak value to the peak value in the waveform of the corresponding axis acceleration time series, and marking the time interval as the waveform period of the corresponding axis acceleration time series;

[0072] If only the waveform period of the Z axis is within the preset P wave waveform period warning range, a third comparison result displayed as a P wave warning feature is generated;

[0073] If only the waveform periods of the X-axis and the Y-axis are within the preset S-wave waveform period warning range, a third comparison result displayed as an S-wave warning feature is generated;

[0074] If the waveform periods on the X-axis, Y-axis and Z-axis are within the preset surface wave waveform period warning range, a third comparison result displayed as a surface wave warning feature is generated;

[0075] Step Q5: The three comparison results are combined. If the three comparison results are the same, it is determined that the elevator operation of the current target building complex is threatened by the earthquake, and an early warning signal of the corresponding seismic wave type is generated and marked with the unique identifier of the earthquake monitoring device and sent to the elevator earthquake early warning analysis module; if the three comparison results are different, no early warning signal is generated;

[0076] Among them, the execution order of step Q2, step Q3 and step Q4 can also be carried out simultaneously, or in other orders;

[0077] It should be noted that the preset warning ranges of all features refer to the standard ranges that can trigger local elevator earthquake warnings. The values ​​are different in different regions, so I will not elaborate on them here.

[0078] It can be understood that the present invention directly compares the amplitude, frequency and waveform characteristics analyzed from the three-axis acceleration time series contained in the earthquake parameter time series data with the corresponding earthquake wave characteristic warning range, and the result obtained is the corresponding type of earthquake wave, which can directly determine whether the elevator needs earthquake warning; there is no need to first determine the type of earthquake wave, and then determine whether the magnitude requirement of earthquake warning is met; in different regions, the warning range values ​​of vibration, frequency and waveform characteristics of different earthquake wave types are different;

[0079] In addition, it should be noted that if any earthquake monitoring device around the target building complex detects S waves or surface waves for the first time, it means that the earthquake source is likely to occur in the area where the target building complex is located; if its amplitude, frequency and waveform characteristics all meet the corresponding warning range, it means that the time left for the elevator earthquake warning is very short, and it is almost impossible to have enough time for the elevator to stop at the corresponding safe position, which is not considered here; the present invention mainly monitors P waves. Since the propagation speed of P waves is the fastest, once the monitoring and analysis confirms the P wave warning characteristics, the elevator earthquake warning is carried out in time, thereby ensuring the safety of personnel and elevators;

[0080] In the present invention, several earthquake monitoring devices are arranged around the target building complex to detect the earthquake parameter time series data of the area where the target building complex is located in real time, and all the real-time earthquake parameter time series data obtained are analyzed by the earthquake monitoring and analysis module to determine whether the elevator operation of the target building complex is threatened by the earthquake, and generate an early warning signal of the corresponding earthquake wave type; this method can monitor the earthquake activity in the target area in real time and capture the characteristics of the earthquake wave in time. Different from the existing method of installing earthquake monitoring devices inside the building, the arrival of the P wave can be detected in advance. In addition, multiple earthquake monitoring devices are arranged around the target building complex, which can cover the earthquake wave transmission paths in different directions, effectively identify earthquake waves from different directions, and improve the accuracy of earthquake threat judgment. By analyzing the data of multiple monitoring points, the possibility of false alarms can be reduced. The earthquake monitoring and analysis module can automatically process and analyze a large amount of earthquake parameter time series data, and can determine whether it poses a threat to the elevator operation without human intervention, and automatically generate an early warning signal to reduce human delay. This method can increase or decrease the data and layout range of the earthquake monitoring device according to the scale and needs of the building complex to adapt to different geographical environments and earthquake risk levels.

[0081] The elevator earthquake early warning analysis module is used to analyze and obtain the operation control instructions of the corresponding elevators in the target building complex according to the early warning signal obtained from the earthquake monitoring and analysis module, and send the obtained operation control instructions of the corresponding elevators to the elevator controller of the corresponding elevators, and generate an earthquake early warning prompt signal and send it to the voice announcer of the corresponding elevator; specifically including:

[0082] The elevator earthquake early warning analysis module includes an early warning preprocessing unit and a plurality of elevator operation analysis units;

[0083] The warning preprocessing unit is used to confirm the seismic wave type contained in the warning signals of all the seismic monitoring device unique identifiers. If the seismic wave type contained in the warning signals of all or part of the seismic monitoring device unique identifiers is S wave or surface wave, a forced braking warning signal is generated and sent to all elevator operation analysis units; if the seismic wave type contained in the warning signals of all or part of the seismic monitoring device unique identifiers is P wave, the minimum predicted time of S wave arrival at the target building complex is calculated and sent to all elevator operation analysis units.

[0084] It should be noted that the types of seismic waves contained in the warning signals of the unique identifiers of different seismic monitoring devices may be different, including: the types of seismic waves contained in the warning signals of the unique identifiers of all or part of the seismic monitoring devices are P waves, and the types of seismic waves contained in the warning signals of the unique identifiers of all or part of the seismic monitoring devices are S waves or surface waves; it is understandable that when the seismic wave propagates to the target building complex, some seismic monitoring devices will detect the arrival of the P wave, and the remaining seismic monitoring devices may not detect the P wave, or may not detect any wave at all, because the seismic monitoring devices are surrounded by the target building complex, and the seismic wave may arrive from any direction. Once the P wave is detected, the elevator warning is immediately issued, and the warning will not be issued until the S wave or surface wave arrives, at which time it is too late. In addition, when the types of seismic waves contained in the warning signals of the unique identifiers of all or part of the seismic monitoring devices are S waves or surface waves, the elevator operation can only be stopped immediately; it should be noted that the embodiment of the present invention excludes the situation of seismic monitoring device failure;

[0085] Specifically, the method for obtaining the minimum predicted value of the S-wave arrival time of the target building complex is as follows:

[0086] Obtain the earthquake early warning signal from the local earthquake monitoring center and the initial detection time point of the earthquake parameter time series data of each earthquake monitoring device in the target building complex;

[0087] Calculate the time difference between the initial occurrence time point of the earthquake source included in the earthquake early warning signal of the local earthquake monitoring center and the initial detection time point in the real-time earthquake parameter time series data of each earthquake monitoring device, and obtain the P wave arrival time value detected by each earthquake monitoring device; wherein, the local earthquake monitoring center refers to the relevant department of local earthquake monitoring and early warning, referred to as the earthquake monitoring center here, and the earthquake early warning signal of the local earthquake monitoring center refers to the early warning signal transmitted to the outside through the network by the local earthquake monitoring center when an earthquake is detected;

[0088] Calculate the product of the P wave velocity and the P wave arrival time value detected by each seismic monitoring device respectively, obtain the distance between the earthquake source and each seismic monitoring device, and mark the distance as the seismic distance of the corresponding seismic monitoring device;

[0089] Calculate the quotient of the earthquake distance and the S-wave velocity of each earthquake monitoring device respectively, and obtain the propagation time value of the S-wave that will reach each earthquake monitoring device;

[0090] Calculate the sum of the P-wave arrival time value and the S-wave propagation time value of each seismic monitoring device respectively, and obtain the S-wave arrival prediction time of each seismic monitoring device;

[0091] Arrange the S wave arrival prediction times of all seismic monitoring devices in ascending order, and select the smallest value as the minimum S wave arrival time prediction value of the target building complex;

[0092] It should be noted that the P-wave velocity and S-wave velocity are known and are obtained based on the analysis of previous local earthquake survey data. Global standards can also be adopted, such as the P-wave velocity is about 6 to 8 km / s and the S-wave velocity is about 3.5 to 5 km / s; the maximum value can be selected as the velocity of the corresponding wave;

[0093] In this embodiment, each elevator operation analysis unit is associated with a corresponding elevator in the target building complex. The elevator operation analysis unit is used to analyze and obtain the elevator operation control instruction based on the acquired forced braking warning signal or the predicted value of the minimum arrival time of the S wave of the target building complex, and send it to the elevator controller of the corresponding elevator, and at the same time generate an earthquake warning prompt signal and send it to the voice announcer of the corresponding elevator; the processing method of the elevator operation analysis unit specifically includes:

[0094] When the signal of forced braking warning is obtained, the position of the corresponding elevator is obtained; if the current position of the corresponding elevator is exactly at the floor position, a control command signal of pause and door opening is generated and sent to the corresponding elevator controller; if the current position of the corresponding elevator is between floors, a control command signal of pause is generated and sent to the corresponding elevator controller; at the same time, an earthquake warning prompt signal is generated and sent to the voice announcer of the corresponding elevator;

[0095] Understandably, during a larger earthquake, the reason to avoid moving an elevator if it is stopped between floors is to prevent the elevator from getting stuck, derailing, suddenly falling, or other unexpected situations during movement in the event of aftershocks or post-earthquake building structural instability; earthquakes may cause damage to the elevator shaft, guide rails, or other critical structures, and continuing to move the elevator may increase the risk; keeping the elevator stationary can avoid additional vibration or stress on the elevator system that may already be damaged, thereby protecting the safety of passengers; rescuers usually evacuate passengers from an elevator that is stopped between floors through manual operation or other safe methods, rather than taking the risk of continuing to operate the elevator;

[0096] When the minimum predicted value of the S wave arrival time of the target building group is obtained, then:

[0097] Get the load W of the corresponding elevator and the speed of the elevator when it is empty ; Among them, the load of the elevator is obtained by detecting the gravity sensor of the elevator; the speed of the elevator when it is empty is set by relevant technicians;

[0098] Case 1: When the load W of the corresponding elevator is greater than 0, then:

[0099] According to the calculation formula , get the actual running speed V of the current corresponding elevator; where, represents the maximum load of the corresponding elevator; k represents the influence factor of load on the elevator speed; the value of k is obtained through experimental testing and regression analysis. First, the experimental data of elevator speed under different loads are measured, and the model is used Perform linear regression analysis on the experimental data and use statistical methods to find the k value that minimizes the error between the model calculation value and the actual measurement value. In practical applications, the k value should be re-verified and adjusted regularly to ensure long-term accuracy.

[0100] Calculate the maximum floor I that the elevator can reach within the minimum predicted time value TY of the S wave arrival; the calculation formula is:

[0101] ;

[0102] In the formula, i represents the number of the floor the elevator is currently on, and i≥1; H represents the distance between floors; T1, T2, and T3 represent the acceleration time, deceleration time, and door opening time of the elevator, respectively; it should be noted that the sizes of T1 and T2 are generally similar to ensure that the elevator runs smoothly when starting and stopping;

[0103] It should be noted that when the elevator load is greater than 0, it means that the elevator is currently loaded and may be carrying people. When there are people in the elevator, if an earthquake occurs, it is best to move the elevator as close to the ground floor as possible to facilitate evacuation of people;

[0104] According to the calculated maximum floor I that the elevator can reach within the minimum predicted time of the S wave, if the value of I is greater than or equal to 1, a control instruction for driving downward and stopping at the Ith floor and opening the door is generated and sent to the elevator controller of the corresponding elevator; if the value of I is less than 1, a control instruction for driving downward and stopping at the ground floor and opening the door is generated and sent to the elevator controller of the corresponding elevator; at the same time, an earthquake early warning prompt signal is generated and sent to the voice announcer of the corresponding elevator;

[0105] Case 2: When the load W of the corresponding elevator is equal to 0, then:

[0106] For low-rise buildings, the middle part is usually set as a safety floor; for high-rise buildings, safety floors are usually set every certain number of floors; it is safer for an empty elevator to park on the safety floor when an earthquake strikes;

[0107] Get the i-th floor that the corresponding elevator is currently on or the i-th floor that is closest to it; compare the numbers of the i-th floor with those of all the safety floors of the building, and select the safety floor closest to the i-th floor as the current nearest safety floor of the corresponding elevator;

[0108] If the corresponding elevator is currently above the nearest safe floor, calculate the maximum floor I that the empty elevator can reach within the minimum predicted time of the S wave arrival. The calculation formula is:

[0109] ;

[0110] The calculated maximum floor I that the unloaded elevator can reach within the minimum predicted time of the S wave is compared with the number of the nearest safe floor; if the calculated floor I is at or above the nearest safe floor, a control instruction is generated to drive downward, stop at the I floor and open the door, which is sent to the elevator controller of the corresponding elevator; if the calculated floor I is lower than the nearest safe floor, a control instruction is generated to drive downward, stop at the nearest safe floor and open the door, which is sent to the elevator controller of the corresponding elevator; at the same time, an earthquake early warning prompt signal is generated and sent to the voice announcer of the corresponding elevator;

[0111] If the current elevator is at the nearest safe floor, a control command to stop at the current floor and open the door is generated and sent to the elevator controller of the corresponding elevator; at the same time, an earthquake early warning prompt signal is generated and sent to the voice announcer of the corresponding elevator;

[0112] If the corresponding elevator is currently below the nearest safe floor, calculate the maximum floor I that the empty elevator can reach within the minimum predicted time of the S wave arrival; the calculation formula is:

[0113] ;

[0114] The calculated maximum floor I that the unloaded elevator can reach within the minimum predicted time of the S wave is compared with the number of the nearest safe floor; if the calculated floor I is at or below the nearest safe floor, a control instruction is generated to drive upward, stop at the I floor and open the door, which is sent to the elevator controller of the corresponding elevator; if the calculated floor I is higher than the nearest safe floor, a control instruction is generated to drive upward, stop at the nearest safe floor and open the door, which is sent to the elevator controller of the corresponding elevator; at the same time, an earthquake early warning prompt signal is generated and sent to the voice announcer of the corresponding elevator;

[0115] It should be noted that in an emergency, the elevator may be allowed to slow down and change direction without stopping at a floor;

[0116] The voice announcer is used to broadcast earthquake warning prompt signals according to the pre-prepared earthquake voice broadcast sentences; the voice announcer installed inside the elevator reminds the people inside the elevator that the elevator is performing earthquake warning emergency braking, and tells the people to take safety measures, such as not to panic, not to open the door, etc.; the voice announcer installed outside the elevator reminds people outside the elevator not to enter the elevator and to protect their own safety and evacuate in an orderly manner;

[0117] In the present invention, the earthquake wave type that threatens the operation of the elevator is obtained through the earthquake monitoring and analysis module; if the earthquake wave type is S wave or surface wave, the elevator is directly controlled to pause and open the door or pause; if the earthquake wave type is P wave, the minimum time prediction value of the S wave reaching the target building group is calculated to control the emergency stop of the corresponding elevator of the target building group; while controlling the operation of the elevator, an earthquake early warning prompt signal is sent to the voice announcer for language reminder; this efficient early warning and response mechanism ensures that the elevator system can respond in the shortest time, reduce the threat of earthquakes to the operation of the elevator and the safety of passengers, and can make the most effective response at different stages of the earthquake through differentiated processing methods. In addition, the system can intelligently calculate the floor where the elevator should stop before the arrival of the S wave when the P wave arrives according to the current load condition, operating status and floor position of the elevator, and execute the optimal parking strategy. For unloaded elevators, reasonable parking arrangements can be made according to the safety layer setting of the building, which not only improves the operation efficiency of the elevator, but also further ensures the safety of people inside and outside the elevator; improves the accuracy of the prediction, and ensures the timeliness and rationality of emergency measures.

[0118] The above formulas are all calculated by removing dimensions and taking numerical values. The formula is a formula that is closest to the actual situation obtained by collecting a large amount of data and performing software simulation. The preset parameters and preset thresholds in the formula are set by technical personnel in this field according to actual conditions or obtained by simulating a large amount of data.

[0119] In the embodiments provided by the present invention, it should be understood that the disclosed devices, apparatuses and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the modules is only a logical function division, and there may be other division methods in actual implementation; the modules described as separate components may or may not be physically separated, and the components displayed as modules may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the method of this embodiment.

[0120] The above embodiments are only used to illustrate the technical method of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the present invention.

Claims

1. An earthquake early warning information broadcasting system, characterized in that: include: An earthquake monitoring device is used to detect and obtain the earthquake parameter time series data of the target building complex in real time, and transmit it to the earthquake monitoring and analysis module; The earthquake monitoring and analysis module is used to analyze and determine whether the elevator operation of the target building complex will be threatened by the earthquake based on the earthquake parameter time series data detected by a number of earthquake monitoring devices evenly arranged around the target building complex, and generate an early warning signal of the corresponding earthquake wave type, mark it with the unique identifier of the earthquake monitoring device and send it to the elevator earthquake early warning analysis module; the earthquake monitoring and analysis module is provided with a number of monitoring processing units; The elevator earthquake early warning analysis module is used to analyze and obtain the operation control instructions of the corresponding elevators in the target building complex according to the early warning signals obtained from the earthquake monitoring and analysis module, and send the obtained operation control instructions of the corresponding elevators to the elevator controllers of the corresponding elevators, and at the same time generate earthquake early warning prompt signals and send them to the voice announcers of the corresponding elevators; The elevator earthquake early warning analysis module includes an early warning preprocessing unit and several elevator operation analysis units; An elevator controller, used to control the operation of the corresponding elevator based on the acquired elevator operation control instruction; A voice broadcaster is used to broadcast earthquake early warning prompt signals according to pre-prepared earthquake voice broadcast sentences; The earthquake monitoring device detects and obtains the acceleration of the X-axis, Y-axis and Z-axis in real time. The X-axis acceleration and the Y-axis acceleration refer to the acceleration in the horizontal direction, and the X-axis acceleration and the Y-axis acceleration are perpendicular to each other; Z-axis acceleration refers to the acceleration perpendicular to the horizontal direction and is consistent with the direction of gravity; The monitoring processing unit is used to process the seismic parameter time series data of the seismic monitoring device corresponding to the unique identifier obtained; including: Step Q1: acquiring earthquake parameter time series data detected by a corresponding earthquake monitoring device according to a preset time period; performing denoising and filtering on the acquired corresponding earthquake parameter time series data; the earthquake parameter time series data includes a unique identifier of the earthquake monitoring device and the detected acceleration time series data; the acceleration time series data includes an X-axis acceleration time series, a Y-axis acceleration time series and a Z-axis acceleration time series; Step Q2: respectively calculate the acceleration amplitude values ​​corresponding to the X-axis acceleration time series, the Y-axis acceleration time series and the Z-axis acceleration time series; respectively compare the calculated acceleration amplitude values ​​of each axis with the preset P-wave amplitude warning range, the preset S-wave amplitude warning range and the preset surface wave amplitude warning range; if only the acceleration amplitude value of the Z-axis belongs to the preset P-wave amplitude warning range, then generate a first comparison result displayed as a P-wave warning feature; if only the acceleration amplitude values ​​of the X-axis and the Y-axis belong to the preset S-wave amplitude warning range, then generate a first comparison result displayed as an S-wave warning feature; if the acceleration amplitude values ​​of the X-axis, the Y-axis and the Z-axis belong to the preset surface wave amplitude warning range, then generate a first comparison result displayed as a surface wave warning feature; Step Q3: Perform fast Fourier transform on the X-axis acceleration time series, the Y-axis acceleration time series and the Z-axis acceleration time series respectively to obtain the frequency domain signal of each axis, and calculate the amplitude spectrum of each axis; obtain the power spectrum of each axis by calculating the square of the amplitude spectrum; if only the ratio of the power spectrum energy of the frequency component of the preset P-wave frequency warning range of the Z-axis to the total energy of the corresponding axis is greater than the preset ratio threshold, then a second comparison result displayed as a P-wave warning feature is generated; if only the ratio of the power spectrum energy of the frequency component of the preset S-wave frequency warning range of the X-axis and the Y-axis to the total energy of the corresponding axis is greater than the preset ratio threshold, then a second comparison result displayed as an S-wave warning feature is generated; if the ratio of the power spectrum energy of the frequency component of the preset surface wave frequency warning range of the X-axis, the Y-axis and the Z-axis to the total energy of the corresponding axis is greater than the preset ratio threshold, then a second comparison result displayed as a surface wave warning feature is generated; Step Q4: using a peak detection algorithm to identify the peak values ​​of the waveforms to which the X-axis acceleration time series, the Y-axis acceleration time series and the Z-axis acceleration time series belong, calculating the time interval from peak to peak in the waveform of the corresponding axis acceleration time series, and marking the time interval as the waveform period of the corresponding axis acceleration time series; if only the waveform period of the Z-axis is within the preset P-wave waveform period warning range, a third comparison result displayed as a P-wave warning feature is generated; if only the waveform periods of the X-axis and the Y-axis are within the preset S-wave waveform period warning range, a third comparison result displayed as an S-wave warning feature is generated; if the waveform periods of the X-axis, the Y-axis and the Z-axis are within the preset surface wave waveform period warning range, a third comparison result displayed as a surface wave warning feature is generated; Step Q5: Comprehensively compare the results of the three comparisons. If the results of the three comparisons are the same, it is determined that the elevator operation of the current target building complex is threatened by the earthquake, and a warning signal of the corresponding seismic wave type is generated and marked with the unique identifier of the seismic monitoring device and sent to the elevator earthquake warning analysis module; if the results of the three comparisons are different, no warning signal is generated; the seismic wave types include P waves, S waves and surface waves.

2. An earthquake early warning information broadcasting system according to claim 1, characterized in that: The early warning preprocessing unit is used to confirm the type of seismic waves contained in the early warning signals of all the unique identifiers of the seismic monitoring devices obtained. If the type of seismic waves contained in the early warning signals of all or part of the unique identifiers of the seismic monitoring devices are S waves or surface waves, a forced braking early warning signal is generated and sent to all elevator operation analysis units; if the type of seismic waves contained in the early warning signals of all or part of the unique identifiers of the seismic monitoring devices are P waves, the minimum predicted time of the S wave arrival at the target building complex is calculated and sent to all elevator operation analysis units.

3. An earthquake early warning information broadcasting system according to claim 2, characterized in that: The method for obtaining the minimum predicted value of the S wave arrival time of the target building group is as follows: Obtain the earthquake early warning signal from the local earthquake monitoring center and the initial detection time point of the earthquake parameter time series data of each earthquake monitoring device in the target building complex; Calculate the time difference between the initial occurrence time point of the earthquake source included in the earthquake early warning signal of the local earthquake monitoring center and the initial detection time point in the real-time earthquake parameter time series data of each earthquake monitoring device, and obtain the P wave arrival time value detected by each earthquake monitoring device; Calculate the product of the P wave velocity and the P wave arrival time value detected by each seismic monitoring device respectively, obtain the distance between the earthquake source and each seismic monitoring device, and mark the distance as the seismic distance of the corresponding seismic monitoring device; Calculate the quotient of the earthquake distance and the S-wave velocity of each earthquake monitoring device respectively, and obtain the propagation time value of the S-wave that will reach each earthquake monitoring device; Calculate the sum of the P-wave arrival time value and the S-wave propagation time value of each seismic monitoring device respectively, and obtain the S-wave arrival prediction time of each seismic monitoring device; The S-wave arrival prediction times obtained from all earthquake monitoring devices are arranged in ascending order, and the one with the smallest value is selected as the minimum S-wave arrival time prediction value of the target building complex.

4. An earthquake early warning information broadcasting system according to claim 2, characterized in that: Each elevator operation analysis unit is associated with the corresponding elevator in the target building complex. The elevator operation analysis unit is used to analyze and obtain the elevator operation control instructions based on the acquired forced braking warning signal or the predicted value of the minimum arrival time of the S wave of the target building complex, and send them to the elevator controller of the corresponding elevator. At the same time, it generates an earthquake warning prompt signal and sends it to the voice announcer of the corresponding elevator.

5. An earthquake early warning information broadcasting system according to claim 4, characterized in that: When the elevator operation analysis unit obtains a forced braking warning signal, the position of the corresponding elevator is obtained; if the current position of the corresponding elevator is at a floor position, a pause and door opening control command signal is generated and sent to the corresponding elevator controller; if the current position of the corresponding elevator is between floors, a pause control command signal is generated and sent to the corresponding elevator controller; at the same time, an earthquake warning prompt signal is generated and sent to the voice announcer of the corresponding elevator.

6. An earthquake early warning information broadcasting system according to claim 4, characterized in that: When the elevator operation analysis unit obtains the predicted value of the minimum arrival time of the S wave of the target building group, then: the corresponding elevator load W and the speed of the elevator when it is empty are obtained ; Case 1: When the load W of the corresponding elevator is greater than 0, then: According to the formula , get the actual running speed V of the current corresponding elevator; where, represents the maximum load of the corresponding elevator; k represents the influence factor of load on the elevator running speed; Calculate the maximum floor I that the elevator can reach within the minimum predicted time TY of the S wave arrival; The calculation formula is: ； Where i represents the number of the floor the elevator is currently on, and i≥1; H represents the distance between floors; T1, T2, and T3 represent the acceleration time, deceleration time, and door opening time of the elevator, respectively; According to the calculated maximum floor I that the loaded elevator can reach within the minimum predicted time of the S wave, if the value of I is greater than or equal to 1, a control instruction for driving downward, stopping at the Ith floor and opening the door is generated and sent to the elevator controller of the corresponding elevator; If the value of I is less than 1, a control command is generated to drive downward, stop at the ground floor and open the door, which is sent to the elevator controller of the corresponding elevator; at the same time, an earthquake early warning prompt signal is generated and sent to the voice announcer of the corresponding elevator; Case 2: When the load W of the corresponding elevator is equal to 0, then: Get the i-th floor that the corresponding elevator is currently on or the i-th floor that is closest to it; compare the numbers of the i-th floor with those of all the safety floors of the building, and select the safety floor closest to the i-th floor as the current nearest safety floor of the corresponding elevator; If the corresponding elevator is currently above the nearest safe floor, calculate the maximum floor I that the empty elevator can reach within the minimum predicted time of the S wave arrival. The calculation formula is: ； The calculated maximum floor I that the unloaded elevator can reach within the minimum predicted time of the S wave is compared with the number of the nearest safe floor; if the calculated floor I is at or above the nearest safe floor, a control instruction is generated to drive downward, stop at the I floor and open the door, which is sent to the elevator controller of the corresponding elevator; if the calculated floor I is lower than the nearest safe floor, a control instruction is generated to drive downward, stop at the nearest safe floor and open the door, which is sent to the elevator controller of the corresponding elevator; at the same time, an earthquake early warning prompt signal is generated and sent to the voice announcer of the corresponding elevator; If the current elevator is at the nearest safe floor, a control command to stop at the current floor and open the door is generated and sent to the elevator controller of the corresponding elevator; at the same time, an earthquake early warning prompt signal is generated and sent to the voice announcer of the corresponding elevator; If the corresponding elevator is currently below the nearest safe floor, calculate the maximum floor I that the empty elevator can reach within the minimum predicted time of the S wave arrival; The calculation formula is: ； The calculated maximum floor I that an empty elevator can reach within the minimum predicted time of the S wave is compared with the number of the nearest safe floor; if the calculated floor I is at or below the nearest safe floor, a control instruction for driving upward, stopping at the Ith floor and opening the door is generated and sent to the elevator controller of the corresponding elevator; if the calculated floor I is higher than the nearest safe floor, a control instruction for driving upward, stopping at the nearest safe floor and opening the door is generated and sent to the elevator controller of the corresponding elevator; at the same time, an earthquake early warning prompt signal is generated and sent to the voice announcer of the corresponding elevator.

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