Automatic alarm applied to elevator car

Abstract

The utility model relates to an automatic alarm applied to an elevator car, which comprises a radar probe and a control panel assembly, the radar probe comprises a laser radar and a millimeter wave radar, the millimeter wave radar is integrated on a preset millimeter wave radar circuit board, and the laser radar is integrated on a preset laser radar circuit board; the control panel assembly comprises a control unit, a state detection sensor, a relay, a signal output connector and a power supply circuit; the control unit is electrically connected with the state detection sensor, the power supply circuit, the relay and the signal output connector respectively; the millimeter wave radar circuit board, the laser radar circuit board and the control board assembly are electrically connected. Wherein the millimeter wave radar and the laser radar communicate with the control panel assembly through a preset connector and transmit a radar detection result to the control panel assembly. According to the invention, the automatic alarm effect can be effectively achieved, and the life safety of passengers is ensured to the greatest extent.

Description

TECHNICAL FIELD

[0001] The utility model relates to automatic alarm system technical field, especially an automatic alarm applied to elevator car. BACKGROUND

[0002] With the progress of science and technology and social development, the market capacity of household elevators is expanding, and household elevators, as elevators for family use, are used in occasions with higher customization, which leads to the fact that end customers require not only the realization of traditional functions of elevators, but also more beautiful appearance, more unique, more novel, safer and more convenient riding experience.

[0003] The existing household elevator car control products on the market are basically manually operated, including calling elevators under normal circumstances and calling for help under emergency situations, which cannot deal with the scenes of inconvenient manual calling and unknown help under emergency situations, thereby leading to low safety of household elevators.

[0004] At present, there is no effective solution to the problem of low safety of household elevators due to the fact that household elevators cannot be manually called and the system cannot actively call for help under emergency situations in the prior art. UTILITY MODEL CONTENT

[0005] Therefore, it is necessary to provide an automatic alarm applied to an elevator car.

[0006] In a first aspect, the utility model provides an automatic alarm applied to an elevator car, which comprises a radar probe and a control board assembly. The radar probe comprises a laser radar and a millimeter wave radar. The millimeter wave radar is integrated on a preset millimeter wave radar circuit board, and the laser radar is integrated on a preset laser radar circuit board. The control board assembly comprises a control unit, a state detection sensor, a relay, a signal output connector and a power supply circuit. The control unit is electrically connected with the state detection sensor, the power supply circuit, the relay and the signal output connector. The relay is used for outputting an alarm control signal, and the signal output connector is used for transmitting the alarm control signal to a control system of the elevator car. The millimeter wave radar circuit board and the laser radar circuit board are electrically connected with the control board assembly. The millimeter wave radar and the laser radar communicate with the control board assembly through a preset connector and transmit radar detection results to the control board assembly.

[0007] In some embodiments, the control board assembly further comprises a voice output unit and a communication unit. The control unit is connected with the voice output unit and the communication unit, and the power supply circuit supplies power to the voice output unit and the communication unit.

[0008] The voice output unit is used for voice prompting in the elevator car when detecting that the elevator car is in an abnormal state.

[0009] The communication unit is configured to communicate with a control system of the elevator car, acquire elevator operation data, and report an elevator fault signal to the control system of the elevator car.

[0010] In some embodiments, the radar probe further comprises a light module, wherein the light module comprises at least two light sub-modules, each light sub-module having a different light color, and each light sub-module is electrically connected to the power supply circuit and the control unit.

[0011] In one embodiment, the radar probe further comprises a housing assembly and a fixed knob, wherein the housing assembly is provided with a threaded surface on the outside, the housing assembly is arranged on the inside of the car, and the fixed knob is arranged on the outside of the car, the fixed knob passes through a hole in the side wall of the elevator car, and the fixed knob is fixedly connected to the housing assembly through the threaded surface; the control board assembly is fixedly connected to the inner wall of the elevator car by a pre-set magnet.

[0012] In one embodiment, the millimeter wave radar comprises a millimeter wave transmitter, a millimeter wave receiver, and a millimeter wave radar signal processor, wherein the millimeter wave transmitter comprises an oscillator, a power amplifier, and a millimeter wave transmitting antenna; the millimeter wave receiver comprises a millimeter wave receiving antenna, a noise amplifier, a mixer, and an intermediate frequency amplifier; the millimeter wave transmitter, the millimeter wave receiver, and the millimeter wave radar signal processor are integrated on a millimeter wave radar circuit board.

[0013] In one embodiment, the laser radar comprises a laser transmitter, an optical receiver, and a laser radar signal processor, wherein the laser transmitter comprises a pump source, a stimulated medium, and a resonant cavity; the optical receiver comprises a receiving optical module, a photodetector, and an amplifier; the laser transmitter, the optical receiver, and the laser radar signal processor are integrated on a laser radar circuit board.

[0014] In one embodiment, the millimeter wave radar signal processor is configured to perform analog-to-digital conversion processing on the collected car detection signal reflected from the inside of the elevator car, and send the analog-to-digital conversion result to the control unit through the connector; the laser signal processor is configured to perform analog-to-digital conversion processing on the collected laser electrical signal reflected from the inside of the elevator car, and send the analog-to-digital conversion result to the control unit through the connector.

[0015] In one embodiment, the state detection sensor comprises an acceleration sensor and an air pressure sensor.

[0016] The utility model provides an automatic alarm for elevator car, automatic alarm includes, radar probe is provided with laser radar, millimeter wave radar and control panel assembly in the radar probe, millimeter wave radar, laser radar all are integrated with control panel assembly, control panel assembly includes control unit, state detection sensor, relay, signal output connector, voice output unit, communication circuit and power supply circuit, control unit is connected with state detection sensor, power supply circuit, relay and signal output connector, communication circuit electricity respectively, and relay is used for outputting alarm control signal, and signal output connector is used for transmitting alarm control signal to the control system of elevator car, millimeter wave radar and laser radar, through the communication of the preset connector and control panel assembly, the radar detection result is transmitted to control panel assembly.

[0017] In one embodiment, the millimeter wave radar is disposed on a preset millimeter wave radar circuit board, and the laser radar is disposed on a preset laser radar circuit board; the control panel assembly, the millimeter wave radar circuit board and the laser radar circuit board are hard connected using a row of pins.

[0018] The automatic alarm provided by the utility model detects the state of passengers in the elevator car through the millimeter wave radar and the laser radar, such as whether an abnormal state such as falling or being trapped occurs, and can detect whether the elevator is running normally, such as whether an abnormal state such as emergency stop or shaking occurs, through the state detection sensor on the control panel assembly; when the radar module and the control panel assembly detect an abnormality, the control system of the elevator car can timely perform alarm processing. Through the application, the automatic alarm effect can be effectively achieved, the extreme situation caused by the fact that the elevator or passengers cannot call for help when an abnormal situation occurs can be solved, and the life safety of passengers can be ensured to the greatest extent. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is an embodiment of the automatic alarm structure diagram;

[0020] Figure 2 It is an embodiment of the radar probe structure schematic view;

[0021] Figure 3 It is an embodiment of the control panel assembly structure schematic view;

[0022] Figure 4 It is an embodiment of the control panel assembly back surface schematic view;

[0023] Figure 5 It is an embodiment of the radar probe back surface schematic view;

[0024] Figure 6 It is an embodiment of the automatic alarm front perspective view;

[0025] Figure 7 Fig. 1 is a schematic diagram of the electrical structure of the millimeter wave radar in one embodiment;

[0026] Figure 8 Fig. 2 is a schematic diagram of the operation process of the automatic alarm in one embodiment;

[0027] Figure 9 Fig. 3 is a schematic diagram of the radar probe structure in another embodiment.

[0028] Fig. 1 is a schematic diagram of the electrical structure of the millimeter wave radar in one embodiment; Fig. 2 is a schematic diagram of the operation process of the automatic alarm in one embodiment; Fig. 3 is a schematic diagram of the radar probe structure in another embodiment. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0030] It should be noted that when an element is referred to as being "arranged on" another element, it can be directly arranged on the other element or there can be a middle element. When an element is referred to as being "arranged on" another element, it can be directly arranged on the other element or there can be a middle element. When an element is referred to as being "arranged on" another element, it can be directly arranged on the other element or there can be a middle element.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application only for the purpose of describing specific embodiments of the present application, and is not intended to limit the present application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] The utility model provides an automatic alarm for elevator car, the automatic alarm includes radar probe and control panel subassembly, radar probe includes laser radar and millimeter wave radar, millimeter wave radar is integrated on the preset millimeter wave radar circuit board, and laser radar is integrated on the preset laser radar circuit board, control panel subassembly includes control unit, state detection sensor, relay, signal output connector and power supply circuit, control unit is connected with state detection sensor, power supply circuit, relay and signal output connector respectively, and relay is used for outputting alarm control signal, and signal output connector is used for transmitting alarm control signal to the control system of elevator car, millimeter wave radar circuit board, laser radar circuit board and control panel subassembly are electrically connected, wherein, millimeter wave radar and laser radar, through the preset connector and control panel subassembly communication, transmit radar detection result to control panel subassembly.

[0033] Specifically, Figure 1 It is an embodiment that the automatic alarm structure block diagram for elevator car, radar probe and control panel subassembly are split type structure, and the automatic alarm is connected with the control system of elevator car through control panel subassembly, Figure 2 It is an embodiment that the structure diagram of radar probe, including the shell component 1 of radar probe, the fixed knob 8 of fixing radar probe on the side wall of elevator car, the automatic alarm in the application is composed of radar probe and control panel subassembly (the control panel is not shown in Figure 2 The main function of radar detection is realized through radar probe, and two kinds of radar, millimeter wave radar 7 and laser radar 26, are integrated in radar probe for redundant detection.

[0034] The laser radar 26 is integrated on a preset laser radar circuit board 25, and the laser radar 26 includes a laser emitter, an optical receiver and a laser radar signal processor. The laser emitter emits a radiation beam to the elevator car to detect the situation in the elevator car. The optical receiver receives the radiation beam reflected from the elevator car and converts the optical signal into an electrical signal. The laser radar signal processor is used for analog-to-digital conversion, information analysis and integration of the signal, and finally outputs a laser detection signal to the control board assembly. Similarly, the millimeter wave radar 7 includes a millimeter wave emitter, a millimeter wave receiver and a millimeter wave radar signal processor. The millimeter wave emitter is used to generate a high-frequency signal and emit it through an antenna. The millimeter wave receiver is used to receive the signal reflected from the elevator car and convert the echo signal into a digital signal. The millimeter wave radar signal processor is used for filtering and analyzing the signal, and transmits the detection signal result to the control board assembly. The laser emitter, the optical receiver and the laser radar signal processor are integrated on the laser radar circuit board 25. The millimeter wave emitter, the millimeter wave receiver and the millimeter wave radar signal processor are integrated on the millimeter wave radar circuit board 5. The laser radar circuit board 25 and the millimeter wave radar circuit board 5 are hard-connected through a row of pins. In an embodiment, the radar probe and the control board assembly are electrically connected through a cable and a connector. In actual application, the radar probe and the control board assembly are in a split structure. The radar probe is generally installed on the inner wall of the elevator car or the panel of the elevator operating box. The control board assembly is installed on the back of the elevator car wall or the inside of the operating box.

[0035] The radar probe is provided with a maintenance switch 3. The maintenance switch 3 is connected with a preset radar signal processor on the radar probe (the radar signal processor includes a laser radar signal processor and / or a millimeter wave radar signal processor). The radar signal processor receives the signal of the maintenance switch 3 and sends it to the control board assembly on the basis of processing the radar signal. In some embodiments, the maintenance switch 3 is a micro switch. The micro switch is used to control the conduction or disconnection between the radar signal processor and the control board assembly. The user can manually press the maintenance switch 3, so as to temporarily close the detection alarm function of the radar probe. In the elevator maintenance scene, the maintenance personnel can press the maintenance switch 3 before maintaining the elevator to temporarily close the detection alarm function of the radar probe. The maintenance switch 3 is pressed again after the maintenance is completed, so as to restore the radar detection function.

[0036] Figure 3As shown in the schematic structural diagram of the control board assembly in one embodiment, the control board assembly includes mounting holes 11, a state detection sensor 12, a control board radar signal connector 13, a signal output connector 14, a relay 15, a power supply circuit 16, a voice output unit 17, a control unit 18, a communication unit 24, and a communication connector 27. The control unit 18 is electrically connected to the state detection sensor 12, the power supply circuit 16, the relay 15, and the signal output connector 14, respectively. The control unit 18 can be a CPU (Central Processing Unit), which processes all signals of the control board assembly. The state detection sensor 12 can include, but is not limited to, an acceleration sensor, an air pressure sensor, or any sensor that can detect the running state of the elevator car. When the state detection sensor 12 detects an abnormal motion of the elevator car, such as a sudden change in the motion speed, too fast or too slow motion, shaking of the elevator car, or air pressure in the car exceeding the preset normal range, an alarm is triggered. Specifically, the state detection sensor 12 transmits the detected signal to the control unit 18, which controls the relay 15 to act and output an alarm signal. The relay 15 is connected to the control system of the elevator car and / or the one-key calling device alarm system through the signal output connector 14, thereby completing automatic alarm, fault reporting, and processing. For example, after receiving the alarm signal, the control system of the elevator car controls the elevator car to open the door and sends an alarm to the outside through the one-key calling device on the car operating panel. Specifically, when the control unit 18 detects an abnormal situation (such as an abnormal running state of the elevator car or an abnormal number of people in the elevator car detected by the radar module), the relay 15 is controlled to act, and the dry contact signal of the relay 15 is sent to the control system of the elevator car and the one-key calling device through the signal output connector 14. The control system of the elevator car controls the elevator to stop at the nearest landing and opens the elevator door, and the one-key calling device automatically alarms or calls the preset calling terminal. The power supply circuit 16 can be a low-voltage power connector, which receives an external 12V or 24V power supply to power all components of the control board assembly and the radar module. Further, the control board assembly includes a mounting plate with mounting holes 11 on the back. The control board assembly can be fixed to the elevator car through the mounting holes 11. For example, a magnet 19 can be fixed on the mounting holes 11 to magnetically fix the control board assembly to the elevator car. This eliminates the need for holes in the car or the control board, and the position can be adjusted more freely and conveniently. The communication connector 27 is connected to the control system of the elevator car to transmit communication signals between the control board assembly of the automatic alarm and the control system of the elevator car. Figure 4As a schematic view of the back of the control board assembly in one embodiment, it should be noted that because the state detection sensor 12 is provided on the control board assembly, the direction in which the control board assembly is installed is fixed, for example, the installation direction of the control board assembly can be marked as shown. Figure 4 As a schematic view of the back of the control board assembly in one embodiment, it should be noted that because the state detection sensor 12 is provided on the control board assembly, the direction in which the control board assembly is installed is fixed, for example, the installation direction of the control board assembly can be marked as shown. Figure 5 As a schematic view of the back of the control board assembly in one embodiment, it should be noted that because the state detection sensor 12 is provided on the control board assembly, the direction in which the control board assembly is installed is fixed, for example, the installation direction of the control board assembly can be marked as shown.

[0037] The elevator car automatic alarm provided in the present application includes a radar probe and a control board assembly, the radar probe is provided with a laser radar 26 and a millimeter wave radar 7, the laser radar 26 and the millimeter wave radar 7 are connected with the control board assembly through a laser radar connector and a radar probe connector 9 respectively, the detection of the situation inside the elevator car is completed by the two radars together, which effectively improves the accuracy of detection and avoids the situation that one of the radars fails and fails to detect in time. When the control board assembly detects an abnormal situation inside the car (such as a passenger staying in the elevator car for too long) through the radar probe, it automatically alarms. Further, the control board assembly is integrated with a state detection sensor 12, which can effectively monitor the running state of the elevator car, and when an abnormality in the running of the elevator car is detected (such as sudden speed change, elevator shaking, running speed too fast or too slow, etc.), the control board assembly automatically alarms through a signal output unit. Through the present application, the automatic alarm effect can be effectively achieved, and the extreme situation caused by the passenger's inability to call for help when the elevator or passenger appears an abnormal situation is solved, which maximizes the safety of the passengers.

[0038] In some embodiments, the control board assembly further comprises a voice output unit and a communication unit, the control unit is connected with the voice output unit and the communication unit respectively, and the power supply circuit supplies power to the voice output unit and the communication unit respectively.

[0039] The voice output unit is used for voice prompting in the elevator car when detecting that the elevator car is in an abnormal state.

[0040] The communication unit is used for communicating with the control system of the elevator car, acquiring elevator operation data, and reporting elevator fault signals to the control system of the elevator car.

[0041] Specifically, the control board assembly further comprises a voice output unit 17 and a communication unit 24, as shown above. Figure 3 The control unit 18 is connected with the voice output unit 17 and the communication unit 24 respectively. The voice output unit 17 is used for controlling the control unit 18 to broadcast voice prompts to the elevator car when receiving abnormal signals, including detection abnormal signals output by the radar probe and / or detection abnormal signals output by the state detection sensor, to inform passengers in the car of the current state. Specifically, the voice output unit 17 mainly realizes the voice prompt function, and the content of the broadcast can be preset according to actual needs. In actual application, when the control unit 18 controls the relay 15 to act and sends the relay 15 dry contact signal to the control system of the elevator car and the one-key calling device through the signal output connector 14, and the one-key calling device realizes automatic alarm or calling to the preset calling terminal, at the same time, the control unit 18 controls the voice output unit 17 to give voice prompts.

[0042] The communication unit 24 is used for communicating with the control system of the elevator car. The communication between the communication unit 24 and the control system of the elevator car can be one-way or two-way. For example, the communication unit 24 can feed back the fault information of the elevator car to the control system of the elevator car in one way, or send fault information to the control system of the elevator car and acquire real-time operation data and real-time state of the elevator.

[0043] Through the voice output unit 17 and the communication unit 24, the current elevator operation data can be acquired in time through the communication unit when the elevator fails, and real-time voice broadcast can be realized in the elevator car to calm the passengers in the car.

[0044] In some embodiments, the radar probe further comprises a light module, wherein the light module comprises at least two light sub-modules, the light color of each light sub-module is different, a light-transmitting outer frame is arranged outside each light sub-module, and each light sub-module is electrically connected with the power supply circuit and the control unit.

[0045] Specifically, Figure 6 For a front perspective view of the automatic alarm in an embodiment, it includes standby indicator 4, light-transmitting outer frame 2, laser radar circuit board 25, status indicator 6, maintenance switch 3, laser radar 26, the radar probe includes at least two light sub-modules, two light sub-modules are used to indicate different states of the automatic alarm and / or the elevator car, such as including standby indicator 4, status indicator 6, in some preferred embodiments, after the control system of the elevator car is powered on, each component in the automatic alarm obtains power and enters a standby state, at this time, the above-mentioned standby indicator 4 starts to flash blue light, and each sensor enters a continuous detection state. Further, when the control unit receives an abnormal signal (including a detection abnormal signal output by the radar probe or a detection abnormal signal output by the state detection sensor), the control state indicator 6 starts to continuously flash bright yellow light (the above light colors are only used as examples for reference, and in actual application, the light colors of each light sub-module are not limited to the above colors), indicating that the elevator car is in an abnormal state at this time, and the above-mentioned voice output unit is controlled to play. In summary, a preferred embodiment of the light sub-module is provided, and the light sub-module in the present application includes but is not limited to the above two uses or states, which can be set by a person skilled in the art according to actual needs.

[0046] The present application also includes maintenance switch 3, which can be arranged on millimeter wave radar circuit board 5 or laser radar circuit board 25. The laser radar circuit board 25 and the millimeter wave radar circuit board 5 are arranged in a stack in the radar probe. In this embodiment, the maintenance switch 3 is a micro switch, and the micro switch is arranged on the laser radar circuit board 25. The maintenance switch 3 is connected with a radar signal processor prearranged on the radar probe. The radar signal processor receives the signal of the maintenance switch 3 and sends it to the control board on the basis of processing the radar signal. Each of the laser radar circuit board 25 and the millimeter wave radar circuit board 5 is provided with a radar signal processor. The shell assembly of the radar probe is provided with a hole at a position corresponding to the maintenance switch 3. The position of the hole is the same as that of the maintenance switch 3. The user can press the maintenance switch 3 through the hole to temporarily close the detection and alarm function of the radar probe. In the elevator maintenance scene, the maintenance personnel presses the maintenance switch 3 to temporarily close the detection and alarm function of the radar probe before maintaining the elevator. The maintenance switch 3 is pressed again after the maintenance is completed to restore the radar detection function.

[0047] Further, the light-transmitting outer frame 2 is arranged outside the light sub-module. The material of the light-transmitting outer frame 2 can be acrylic plate, and the surface treatment is silk printing or UV printing. The position and shape of the light-transmitting outer frame 2 can be set according to actual needs, as long as the light-transmitting outer frame 2 can make the light sub-module transparent and achieve the best reminding effect.

[0048] In one of the embodiments, the radar probe further comprises a shell assembly and a fixed knob; wherein the outer side of the shell assembly is provided with a threaded surface, the shell assembly is arranged inside the car, the fixed knob is arranged outside the car, the fixed knob passes through the hole on the side wall of the elevator car, and the fixed knob is fixedly connected with the shell assembly through the threaded surface; the control panel assembly is fixed on the inner wall of the elevator car through the preset magnet.

[0049] Specifically, as shown above Figure 2 The radar probe further comprises a shell assembly 1 and a fixed knob 8, the outer wall of the radar probe shell assembly is provided with a threaded surface, which is used in combination with the fixed knob, so that the entire radar probe can be fixed in the elevator car, the material of the shell assembly is acrylic, and in some preferred embodiments, the shell assembly can also include alarm names, user customized personalized logos and other information. The back of the shell assembly has a threaded column for fixing the radar circuit board, the above radar shell assembly, internal threaded column and internal threaded surface are integrally formed of acrylic material without the need for other connection methods. Inside the radar probe, there are millimeter wave radar circuit boards and laser radar circuit boards, and there are indicator lights, maintenance switches, various electronic components and corresponding radar modules distributed on the radar circuit board. Since the laser circuit board and the millimeter wave radar circuit board are hard connected through the pinout, the above-mentioned indicator lights, maintenance switches and other components can be installed on any one of the radar circuit boards.

[0050] In one of the embodiments, the millimeter wave radar comprises a millimeter wave transmitter, a millimeter wave receiver and a millimeter wave radar signal processor, wherein the millimeter wave transmitter comprises an oscillator, a power amplifier and a millimeter wave transmitting antenna; the millimeter wave receiver comprises a millimeter wave receiving antenna, a noise amplifier, a mixer and an intermediate frequency amplifier; the millimeter wave transmitter, the millimeter wave receiver and the millimeter wave radar signal processor are integrated on the millimeter wave radar circuit board.

[0051] Specifically, Figure 7As a schematic diagram of the electrical structure of the millimeter wave radar in an embodiment, it includes a millimeter wave transmitter 21, a millimeter wave receiver 22, a millimeter wave radar signal processor 23, and an antenna 20, wherein the antenna 20 is the antenna of the millimeter wave radar, including the millimeter wave transmitting antenna and the millimeter wave receiving antenna described above. In actual application, since the millimeter wave radar module is highly integrated, the transmitting antenna and the receiving antenna are integrated in the antenna 20. The millimeter wave transmitter 21 described above includes an oscillator, a signal amplifier, and a millimeter wave transmitting antenna. The oscillator is generally a crystal oscillator, which is used to generate a high-frequency signal to ensure that the signal has enough power to be transmitted. The high-frequency signal is amplified by the signal amplifier and then transmitted by the transmitting antenna. The millimeter wave receiver 22 described above includes an antenna, an LNA (Low Noise Amplifier), a mixer, an ADC (Analog-to-Digital Converter) module, and a filter, etc. The antenna of the receiver receives the echo signal, which is processed by the back end. The signal is enhanced by the low-noise amplifier to improve the signal-to-noise ratio. The mixer mixes the received millimeter wave radar signal with the local oscillator signal to convert the high-frequency signal into an intermediate frequency signal for subsequent processing. Then, the intermediate frequency filter filters out the frequency components that are not needed in the mixed intermediate frequency signal, and retains the useful signal. Finally, the echo signal is converted into a digital signal by the ADC for further digital signal processing.

[0052] The millimeter wave radar signal processor 23 described above includes a core device digital signal processor (DSP), a low-pass filter, and peripheral circuits, etc. The peripheral circuits generally include an FFT (Fast Fourier Transform) module, an MCU (Microcontroller Unit), etc. The low-pass filter is used to filter out high-frequency signals to improve signal quality for subsequent signal processing. The FFT module performs fast Fourier transform to convert time-domain signals into frequency-domain signals for spectral analysis. The DSP extracts the Doppler shift, speed, distance, and other information of the target from the above signals, and finally outputs a detection result to the control board through the MCU. The detection result reflects the status in the car, such as whether there is a passenger, the distance between the target in the car and the radar probe, the moving speed of the target in the car, etc. The millimeter wave transmitter 21, the millimeter wave receiver 22, and the millimeter wave radar signal processor 23 are integrated on the millimeter wave radar circuit board.

[0053] In one of the embodiments, the laser radar comprises a laser transmitter, an optical receiver and a laser radar signal processor, the laser transmitter comprises a pump source, a stimulated medium and a resonant cavity; the optical receiver comprises a receiving optical module, a photodetector and an amplifier; the laser transmitter, the optical receiver and the laser radar signal processor are integrated on a laser radar circuit board.

[0054] Specifically, the laser radar mainly comprises a laser transmitter, an optical receiver and a laser radar signal processor, the laser transmitter mainly comprises a pump source, a stimulated medium and a resonant cavity, the pump source excites the gain medium to radiate light, the stimulated medium is a substance that can convert the energy of the excitation light into laser light, when the stimulated medium obtains the energy supply from the outside, the stimulated medium generates energy radiation, the resonant cavity is composed of two mirrors, one of which is a half-transmission half-reflection mirror, the energy radiation generated by the stimulated medium is amplified in the resonant cavity, only specific radiation light can pass through the unidirectional lens to form a radiation light beam, which is the laser light. The optical receiver mainly comprises a receiving optical module, a photodetector and an amplifier, the receiving optical module collects the laser signal reflected from the target, and focuses the laser beam on the photodetector through the lens, the photodetector performs photoelectric conversion to convert the optical signal into an electrical signal, and the amplifier amplifies the electrical signal output by the photodetector for subsequent signal processing.

[0055] The laser radar signal processor performs analog-to-digital conversion, information analysis and integration, and finally outputs the laser detection signal to the control board assembly for processing. The radar probe in the application integrates a millimeter wave radar and a laser radar, which is a redundant design. In the case that one of the radars fails, the inside of the car can still be detected. When both radars work, the weaknesses of each detection can be supplemented, so as to achieve accurate detection.

[0056] In one of the embodiments, the millimeter wave radar signal processor is used for performing analog-to-digital conversion processing on the collected car detection signal reflected from the elevator car, and sending the analog-to-digital conversion result to the control unit through the connector; the laser signal processor is used for performing analog-to-digital conversion processing on the collected laser electrical signal reflected from the elevator car, and sending the analog-to-digital conversion result to the control unit through the connector.

[0057] Specifically, the millimeter wave radar signal processor is configured to perform analog-to-digital conversion on the car detection signal reflected in the car, and send the analog-to-digital conversion result to the control unit. Similarly, the laser signal processor is configured to perform analog-to-digital conversion on the laser electrical signal reflected in the car, and send the analog-to-digital conversion result to the control unit through the connector. In some embodiments, the millimeter wave radar and the laser radar respectively communicate with the control board connector of the control board assembly through the respective radar probe connector, transmit the radar detection result to the control board assembly, and further send it to the control unit. In another embodiment, since the laser radar and the millimeter wave radar are stacked in the radar probe structure, the laser radar connector can also be connected to the millimeter wave radar through hard connection, and then connected to the control board connector through the connector of the millimeter wave radar.

[0058] In one embodiment, the state detection sensor includes an acceleration sensor and an air pressure sensor.

[0059] Specifically, the control board assembly is provided with an acceleration sensor and an air pressure sensor. The acceleration sensor and its corresponding circuit are configured to sense acceleration changes. When the acceleration exceeds a preset threshold during the operation of the elevator car, or the speed of the elevator car changes suddenly, an alarm is triggered. The air pressure sensor in combination with the acceleration sensor is a hardware redundancy design to ensure the accuracy of the device. When the air pressure sensor detects an abnormal air pressure, it sends an abnormal signal to the control unit in the control board assembly. When the control unit receives the abnormal signal feedback from the acceleration sensor and / or the air pressure sensor, it determines that the elevator car is operating abnormally.

[0060] In some embodiments, the radar probe of the present application is also provided with a micro switch. The maintenance switch 3 is preferably arranged on the millimeter wave radar circuit board or the laser radar circuit board. The maintenance switch 3 is connected with the preset radar signal processor of the radar probe, and the shell assembly of the radar probe is provided with a hole at the corresponding position. The position of the hole is the same as that of the micro switch (i.e. the maintenance switch). The user can press the maintenance switch through the hole to temporarily turn off the detection and alarm function of the radar probe. In the elevator maintenance scene, the maintenance personnel presses the maintenance switch to temporarily turn off the detection and alarm function of the radar probe before maintaining the elevator. After the maintenance is completed, the maintenance switch is pressed again to restore the radar detection function.

[0061] The present embodiment also provides an automatic alarm scheme based on the automatic alarm device, Figure 8 The figure is a schematic diagram of the operation of the automatic alarm device.

[0062] Firstly, it is judged whether the maintenance switch 3 is in action. If the maintenance switch 3 is in action, it indicates that the elevator is in installation or maintenance or repair state, and no detection alarm is needed. If the maintenance switch 3 is in normal state, it indicates that the elevator is in normal use, and the automatic alarm starts to work normally.

[0063] The air pressure sensor and the acceleration sensor on the control board assembly detect whether the elevator is running. If the elevator is not running and is in a stopped state, the radar module detects whether there is a person in the car. If there is a person, the radar module controls the clock chip to start the countdown. When the preset countdown time (such as 1 min) ends, if there is still a passenger in the car, the radar module outputs an abnormal information corresponding to the person trapped in the current elevator car. The signal is sent to the control board assembly 10 through the radar probe connector 9 and the control board radar signal connector 13. The control unit 18 on the control board assembly 10 processes the signal and controls the relay 15 to act. The relay dry contact signal is sent to the one-key calling device in the elevator car control system through the signal output connector 14, and the preset rescue number is automatically called out through the one-key calling device to alarm and call for help.

[0064] When the radar module detects that there is no one in the car, it remains in standby state. If the elevator is in running state and the radar detects that there is a person in the car, it will not enter the alarm countdown, thereby avoiding false alarm caused by long running time of the elevator.

[0065] When the elevator is running, the acceleration sensor and the air pressure sensor on the control board assembly 10 continue to detect. When the acceleration sensor and the air pressure sensor detect that the elevator abnormally stops, an abnormal signal is sent to the control unit 18. The control unit 18 processes the signal and controls the relay 15 to act. The relay dry contact signal is sent to the one-key calling device through the signal output connector 14, so as to automatically call out and achieve the purpose of automatic alarm. The acceleration sensor and the air pressure sensor can detect abnormal situations such as sudden stop and abnormal vibration of the elevator during running. If the above abnormal situations occur, it indicates that the elevator has failed. At this time, whether there is a person trapped or not, the one-key calling device is immediately called to notify the maintenance personnel to rescue or repair. When the elevator is detected to run normally but abnormally vibrate, it may be caused by the vibration of the car due to the fall or impact of the passenger in the car. In this scene, the control unit controls the one-key calling device to automatically call out to notify the maintenance personnel or family members to rescue in time. In summary, when the state detection sensor detects an abnormal situation, no countdown is needed.

[0066] The application also provides an automatic alarm applied to an elevator car, comprising a radar probe, wherein a laser radar, a millimeter wave radar and a control board assembly are arranged in the radar probe, the millimeter wave radar and the laser radar are integrated with the control board assembly, and the control board assembly comprises a control unit, a state detection sensor, a relay, a signal output connector, a voice output unit, a communication circuit and a power supply circuit; the control unit is electrically connected with the state detection sensor, the power supply circuit, the relay, the signal output connector and the communication circuit respectively, the relay is used for outputting an alarm control signal, the signal output connector is used for transmitting the alarm control signal to a control system of the elevator car, and the millimeter wave radar and the laser radar are in communication with the control board assembly through a preset connector, and a radar detection result is transmitted to the control board assembly.

[0067] Specifically, the millimeter wave radar and the laser radar are integrated with the control board assembly in an integrated structure in the embodiment, and the control board assembly, the laser radar and the millimeter wave radar are integrated inside the radar probe. Figure 9 As shown in FIG. 1, it is a radar probe structure in an embodiment, comprising a communication unit 24, a control board assembly 10, a state detection sensor 12, a voice output unit 17, a millimeter wave radar circuit board 5, a radar probe connector 9, a millimeter wave radar 7, a laser radar circuit board 25 and a laser radar 26, wherein the laser radar 26 module is arranged on the laser radar circuit board 25, the millimeter wave radar 7 module is arranged on the millimeter wave radar circuit board 5, and the laser radar circuit board 25 and the millimeter wave radar circuit board 5 are in signal interaction with the control board assembly 10 through hard connection of a row of pins. The control board assembly 10 is integrated with the voice output unit 17, a signal output connector 14 (as shown in FIG. 2) and the communication unit 24. The functions and structures of the above components are the same as those described above. Figure 3

[0068] When the automatic alarm detects that the elevator running state is abnormal through the state detection sensor 12, the relay signal is first output to control the calling device in the control system of the elevator car to call out, to inform the preset rescue personnel that the elevator is abnormal, the integrated radar probe structure further comprises a communication unit 24, when it is detected that the elevator is running but abnormally shaking, a signal is sent to the control system of the elevator car through the communication unit 24, the control system of the elevator car controls the elevator to cancel all inside and outside calling instructions, directly returns to the base station, keeps the door open and waits for rescue, and the car buzzer or the voice station calling device continuously buzzes to remind nearby personnel to rescue.

[0069] ​At the same time when the above actions are performed, the millimeter wave radar 7 and the laser radar 26 are used to detect the current state of the passenger, when it is detected that the passenger falls down, a calling signal is output through the main control board, the preset calling device is controlled to dial the rescue phone, at the same time, the control system of the elevator car pushes the rescue information to the preset terminal equipment through the Internet, and the real-time communication between the terminal equipment and the passenger in the car is realized through the camera in the car, so as to achieve the most timely and effective rescue and emotional comfort. After the rescue is completed, the rescue process is closed, and the elevator returns to normal operation, and the maintenance personnel can also make the elevator return to normal operation through the control cabinet.

[0070] When it is detected that the elevator suddenly stops, in addition to outputting a signal to control the calling device to call out, the control board assembly 10 sends the sudden stop fault information to the control system of the elevator car through the communication unit 24, the control system of the elevator car judges the current state of the elevator, confirms whether the current fault can be self-recovered, if the fault can be self-recovered, the elevator is automatically returned to the floor, and the fault record is reserved, so that the maintenance personnel can lock the problem when they come to repair, if the fault cannot be self-recovered, the control system of the elevator car pushes the rescue information to the preset terminal equipment, and the real-time communication between the terminal equipment and the passenger in the car is realized through the camera in the car, so as to achieve the most timely and effective rescue and emotional comfort.

[0071] When the elevator is not in the running state, but the millimeter wave radar 7 and the laser radar 26 continuously monitor that there is a person in the car, the millimeter wave radar 7 and the laser radar 26 synchronously detect whether the passenger falls down, if the passenger falls down, the calling device is automatically called.

[0072] The control board assembly 10 can communicate with the control system of the elevator car through the communication unit 24, so that the control system of the elevator car controls the elevator to open the door, ascend, descend and the like.

[0073] The technical features of the above-mentioned embodiments can be combined arbitrarily, in order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered that it is within the scope of the present application.

[0074] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present application, and are not used as a limitation of the present application, as long as the above embodiments are appropriately changed and changed within the scope of the essential spirit of the present application, they fall within the scope of the present application.

Claims

1. An automatic alarm for application to an elevator car, characterized in that The automatic alarm comprises a radar probe and a control board assembly, the radar probe comprises a laser radar and a millimeter wave radar, the millimeter wave radar is integrated on a preset millimeter wave radar circuit board, and the laser radar is integrated on a preset laser radar circuit board; the control board assembly comprises a control unit, a state detection sensor, a relay, a signal output connector and a power supply circuit; the control unit is electrically connected with the state detection sensor, the power supply circuit, the relay and the signal output connector respectively, the relay is used for outputting an alarm control signal, and the signal output connector is used for transmitting the alarm control signal to a control system of the elevator car; the millimeter wave radar circuit board, the laser radar circuit board and the control board assembly are electrically connected; wherein the millimeter wave radar and the laser radar communicate with the control board assembly through a preset connector, and transmit radar detection results to the control board assembly.

2. The automatic alarm of claim 1, wherein, The control board assembly further comprises a voice output unit and a communication unit, and the control unit is connected with the voice output unit and the communication unit respectively, and the power supply circuit supplies power to the voice output unit and the communication unit respectively; The voice output unit is used for voice prompting in the elevator car when detecting that the elevator car is in an abnormal state. The communication unit is used for communicating with the control system of the elevator car, acquiring elevator operation data and reporting an elevator fault signal to the control system of the elevator car.

3. The automatic alarm of claim 1, wherein, The radar probe further comprises a light module, wherein the light module comprises at least two light sub-modules, the light color of each light sub-module is different, and each light sub-module is electrically connected with the power supply circuit and the control unit.

4. The automatic alarm of claim 1, wherein, The radar probe further comprises a shell assembly and a fixed knob, wherein a threaded surface is arranged on the outer side of the shell assembly, the shell assembly is arranged on the inner side of the car, the fixed knob is arranged on the outer side of the car, the fixed knob passes through a hole in the side wall of the elevator car, and the shell assembly is fixedly connected with the threaded surface through the threaded surface; the control board assembly is fixedly arranged on the inner wall of the elevator car through a preset magnet.

5. The automatic alarm of claim 1, wherein, The millimeter wave radar comprises a millimeter wave transmitter, a millimeter wave receiver and a millimeter wave radar signal processor, wherein the millimeter wave transmitter comprises an oscillator, a power amplifier and a millimeter wave transmitting antenna; the millimeter wave receiver comprises a millimeter wave receiving antenna, a noise amplifier, a mixer and an intermediate frequency amplifier; the millimeter wave transmitter, the millimeter wave receiver and the millimeter wave radar signal processor are integrated on the millimeter wave radar circuit board.

6. The automatic alarm of claim 1, wherein, The laser radar comprises a laser transmitter, an optical receiver and a laser radar signal processor, the laser transmitter comprises a pump source, a stimulated medium and a resonant cavity; the optical receiver comprises a receiving optical module, a photodetector and an amplifier; the laser transmitter, the optical receiver and the laser radar signal processor are integrated on the laser radar circuit board.

7. The automatic alarm of claim 5 or claim 6, wherein, The millimeter wave radar signal processor is used for analog-digital conversion processing of the collected car detection signals reflected from the elevator car, and sends the analog-digital conversion result to the control unit through the connector.

8. The automatic alarm of claim 1, wherein, The state detection sensor includes an acceleration sensor and an air pressure sensor.

9. An automatic alarm for an elevator car, characterized in that The automatic alarm includes a radar probe, the radar probe is provided with a laser radar, a millimeter wave radar and a control board assembly, the millimeter wave radar and the laser radar are integrated with the control board assembly, the control board assembly includes a control unit, a state detection sensor, a relay, a signal output connector, a voice output unit, a communication circuit and a power supply circuit; the control unit is electrically connected with the state detection sensor, the power supply circuit, the relay, the signal output connector and the communication circuit respectively, the relay is used for outputting an alarm control signal, the signal output connector is used for transmitting the alarm control signal to the control system of the elevator car, the millimeter wave radar and the laser radar communicate with the control board assembly through a preset connector, and radar detection results are transmitted to the control board assembly.

10. The automatic alarm of claim 9, wherein, The millimeter wave radar is arranged on a preset millimeter wave radar circuit board, and the laser radar is arranged on a preset laser radar circuit board; the control board assembly, the millimeter wave radar circuit board and the laser radar circuit board are hard connected by using a row of pins.

Images