CN209805825U - elevator emergency calling system - Google Patents
elevator emergency calling system Download PDFInfo
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- CN209805825U CN209805825U CN201920797840.3U CN201920797840U CN209805825U CN 209805825 U CN209805825 U CN 209805825U CN 201920797840 U CN201920797840 U CN 201920797840U CN 209805825 U CN209805825 U CN 209805825U
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- 239000013078 crystal Substances 0.000 claims description 8
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Abstract
the utility model discloses an elevator emergency calling system, which comprises an embedded microcontroller minimum system, a 4G communication circuit, a pyroelectric sensing circuit, a Hall sensing circuit, a one-key dialing circuit, a power circuit, a real-time clock circuit and a data storage circuit; the minimum system of the embedded microcontroller comprises a main control chip, and a reset circuit, a clock circuit and a starting circuit which are electrically connected with the main control chip; the 4G communication circuit, the pyroelectric sensing circuit, the Hall sensing circuit, the one-key dialing circuit, the power circuit, the real-time clock circuit and the data storage circuit channel lead are respectively connected with different pins of the main control chip. The system has high intelligent degree, improves the rescue efficiency and shortens the time for passengers to be trapped. The 4G communication circuit is arranged to realize wireless communication with the outside, so that signals are not easily interfered, the attenuation degree is low, the communication quality is high, and the elevator is beneficial to rescue when people are trapped; compared with the current wired connection mode, the wire is saved, the maintenance is convenient, and the cost is low.
Description
Technical Field
The utility model belongs to the technical field of the elevator, concretely relates to elevator emergency call system and control method.
Background
An emergency alarm device for an elevator is a device which can easily and rapidly communicate with the outside when an elevator is out of order and a person is trapped.
At present, most of the emergency alarm devices used in elevators are wired talkback connections, that is, five parties of the emergency alarm devices are directly connected through lines. This form of wired connection is naturally sufficiently stable and reliable during use, but suffers from several disadvantages:
1. at present, the residential elevators occupy the largest amount, but are scattered, and if the residential elevators are connected with an elevator emergency alarm device through wires, the engineering quantity is large;
2. If the elevator is far away from the duty room, the signal attenuation exists in the circuit, the communication quality is reduced, and the rescue of the elevator when people are trapped is not facilitated;
3. the circuit of the elevator emergency alarm device and various circuits of a building are placed together for wiring, signals are easy to interfere, so that the conversation quality is reduced, and the rescue is not facilitated;
4. The service life of the elevator is as long as ten years, the line can be aged or damaged, and when the elevator is maintained, a re-paying-off method is usually adopted, so that the cost is high and the engineering quantity is large;
5. The emergency alarm device of the elevator connected by the wire can ensure the effectiveness of the emergency alarm device only if the person on duty does not leave the post for 24 hours.
Disclosure of Invention
The utility model aims at providing an elevator emergency calling system, which solves the problems that most existing emergency alarm devices of elevators are connected by wired intercommunication and by wired connection, the engineering quantity is large; the circuit far leads to the attenuation of signal, conversation quality decline, and the signal is easy to be disturbed, and the circuit can take place ageing or damage the phenomenon, and the technical problem that cost of maintenance is high.
In order to solve the technical problem, the utility model discloses a following scheme:
An elevator emergency calling system comprises an embedded microcontroller minimum system, a 4G communication circuit, a pyroelectric sensing circuit, a Hall sensing circuit, a one-key dialing circuit, a power supply circuit, a real-time clock circuit and a data storage circuit; the minimum system of the embedded microcontroller comprises a main control chip, and a reset circuit, a clock circuit, a starting circuit and a debugging interface which are electrically connected with the main control chip;
The 4G communication circuit, the pyroelectric sensing circuit, the Hall sensing circuit, the one-key dialing circuit, the power circuit, the real-time clock circuit and the data storage circuit are respectively connected with different pins of the main control chip through channel wires.
The system is applied to traction drive elevators, senses whether people exist in an elevator car by using the pyroelectric sensor, senses the opening and closing state of an elevator car door by using the Hall sensor, and calculates the accumulated time of passengers in the elevator car by using the timer. When the elevator is trapped and has a fault, the embedded microcontroller can automatically and accurately send out a rescue signal by using the 4G communication circuit, and automatically dial a third-level rescue telephone to realize automatic rescue. The system can automatically dial a third-level rescue call to realize automatic rescue by pressing a key in the one-key dialing circuit by a trapped passenger, a data storage circuit of the system stores all conversations of the passenger and a receiver in a recording form locally, and when the remote management platform needs to call the call recording, the recording stored in the local device can be uploaded to the management platform. When elevator accident disputes occur, a fact basis is provided for both disputes.
the system has high intelligent degree, improves the rescue efficiency and shortens the time for passengers to be trapped. The 4G communication circuit is arranged to realize wireless communication with the outside, so that signals are not easy to interfere, the signal attenuation degree is low, the communication quality is high, and the rescue of trapped people in the elevator is facilitated; compared with the current wired connection mode, the wire is saved, the maintenance is convenient, and the cost is low.
the pyroelectric sensing circuit comprises a pyroelectric sensor, a first noise reduction capacitor, a first photoelectric coupler and a first current limiting resistor, wherein the pyroelectric sensor is arranged in an elevator car and used for detecting whether the elevator car is occupied or not; a data pin of the pyroelectric sensor is connected with a first current-limiting resistor in series and then is connected with a first photoelectric coupler, and the other pin of the first photoelectric coupler is connected with a first noise reduction capacitor and then is connected with a corresponding pin of the main control chip; when the pyroelectric sensor detects that a person is in the elevator car, the first photoelectric coupler outputs a corresponding high level and a corresponding low level and sends a level signal to the main control chip;
The Hall sensing circuit comprises a Hall sensor, a second noise reduction capacitor, a second photoelectric coupler and a second current limiting resistor, wherein the Hall sensor is arranged on the elevator car door and used for detecting whether the elevator door is closed; a pin of data of the Hall sensor is connected with a second current-limiting resistor in series and then is connected with a second photoelectric coupler, and the other pin of the second photoelectric coupler is connected with a second noise reduction capacitor and then is connected with a corresponding pin of the main control chip; when the Hall sensor detects that the opening and closing state of the elevator car door changes, the second photoelectric coupler outputs corresponding high and low levels and sends the level signals to the main control chip.
the 4G communication circuit comprises a communication module, an SIM card slot, an SIM card, a radio frequency antenna interface circuit, a signal state indicating circuit, a microphone noise reduction circuit and a loudspeaker noise reduction circuit, wherein the SIM card slot is connected with different pins of the communication module through wires;
and the communication module is connected with the main control chip for communication through a serial communication port.
in a further improvement, the one-key dialing circuit comprises a key arranged in a door of the elevator car, and a third resistor and a third capacitor for mechanical jitter elimination; and the third capacitor is connected in parallel with the two ends of the button, then is connected with the third resistor in series, and then is connected with the corresponding pin of the main control chip through a wire. When a passenger presses a key in the one-key dialing circuit, the system can automatically dial a third-level rescue telephone to realize automatic rescue.
in a further improvement, the power supply circuit comprises a 4.2V power supply circuit and a 3.3V power supply circuit;
the external power supply is connected with the 2 pins of the first voltage stabilizing chip, and the 4 pins of the first voltage stabilizing chip stabilize a power supply with output voltage of 4.2V and supply power for the communication circuit;
And the external power supply is connected with the 3 pins of the second voltage stabilizing chip, and the 2 pins of the second voltage stabilizing chip stabilize a power supply with the output voltage of 3.3V and supply power for the main control chip.
further improved, the real-time clock circuit comprises a clock chip PCF8563, a 32.768KHz crystal oscillator, a diode and a battery; two ends of the crystal oscillator are connected with a pin 1 and a pin 2 of the clock chip PCF8563, and the anode of the battery is connected with a pin 8 of the clock chip PCF8563 through a diode; pins 5 and 6 of the clock chip PCF8563 are respectively connected to corresponding pins of the main control chip.
In a further improvement, the data storage circuit comprises an SD card slot, an SD card inserted in the SD card slot and a pull-up resistor, and a pin of the SD card slot is connected with a corresponding pin of the main control chip through the pull-up resistor.
The main control chip is STM32F103VCT6, the first voltage stabilizing chip is MIC29302, and the second voltage stabilizing chip is AMS 1117-3.3.
the control method based on the elevator emergency call system comprises the following steps:
1) When the pyroelectric sensor detects that people exist in the elevator car and the Hall sensor detects that the elevator door is in a closed state, the minimum system of the embedded microcontroller starts timing by using a timer in the system;
2) After the set value is reached, detecting that people still exist in the elevator car, and judging that the elevator is trapped by people when the elevator door is in a closed state, wherein the embedded microcontroller sends a call instruction to the 4G communication circuit by using the serial port, and the 4G communication circuit immediately dials an appointed rescue call; in addition, trapped passengers can dial a designated rescue telephone to wait for rescue by pressing a key in the one-key dialing circuit, and the embedded microcontroller controls the real-time clock circuit to acquire trapping time and dialing time;
3) And after the call is finished, the minimum system control data storage circuit of the embedded microcontroller stores the telephone recording file into the SD card.
In further improvement, the rescue telephone is divided into three levels: the first level is a property company, the second level is an elevator maintenance company, and the third level is an emergency rescue platform;
The embedded microcontroller dials the designated rescue telephone through 4G communication in the following sequence: dialing from the first level, dialing the second level when the first level is not connected, dialing the third level when the second level is not connected, wherein the third level is an elevator emergency rescue platform, and people are on duty within 24 hours to ensure smooth rescue.
compared with the prior art, the beneficial effects of the utility model are as follows:
the system is applied to traction drive elevators, senses whether people exist in an elevator car by using the pyroelectric sensor, senses the opening and closing state of an elevator car door by using the Hall sensor, and calculates the accumulated time of passengers in the elevator car by using the timer. When the elevator is trapped and has a fault, the embedded microcontroller can automatically and accurately send out a rescue signal by using the 4G communication circuit, and automatically dial a third-level rescue telephone to realize automatic rescue. The system can automatically dial a third-level rescue call to realize automatic rescue by pressing a key in the one-key dialing circuit by a trapped passenger, a data storage circuit of the system stores all conversations of the passenger and a receiver in a recording form locally, and when the remote management platform needs to call the call recording, the recording stored in the local device can be uploaded to the management platform. When elevator accident disputes occur, a fact basis is provided for both disputes.
The system has high intelligent degree, improves the rescue efficiency and shortens the time for passengers to be trapped. The 4G communication circuit is arranged to realize wireless communication with the outside, so that signals are not easy to interfere, the signal attenuation degree is low, the communication quality is high, and the rescue of trapped people in the elevator is facilitated; compared with the current wired connection mode, the wire is saved, the maintenance is convenient, and the cost is low.
Drawings
FIG. 1 is an embedded microcontroller minimum system circuit;
FIG. 2 is a 4G communication circuit;
FIG. 3 is a pyroelectric sensing circuit;
FIG. 4 is a Hall sensing circuit;
FIG. 5 is a one-touch dialing circuit;
FIG. 6 is a power supply circuit;
FIG. 7 is a real time clock circuit;
fig. 8 is a data storage circuit.
Detailed Description
In order to make the purpose and technical solution of the present invention clearer, the following will combine the embodiments of the present invention to clearly and completely describe the technical solution of the present invention.
The first embodiment is as follows:
An elevator emergency calling system comprises an embedded microcontroller minimum system, a 4G communication circuit, a pyroelectric sensing circuit, a Hall sensing circuit, a one-key dialing circuit, a power supply circuit, a real-time clock circuit and a data storage circuit; when the elevator is trapped, the pyroelectric sensing circuit and the Hall sensing circuit detect that a person is in the elevator and the elevator is closed, the embedded microcontroller minimum system calculates the time length by using a timer in the system, after the set value is reached, the embedded microcontroller minimum system sends a call instruction to the 4G communication circuit by using a serial port, the 4G communication circuit immediately dials a designated rescue call, and after the call is finished, the trapping time and the dialing time are obtained through the real-time clock circuit, and a call recording file is stored in the data storage circuit. The minimum system of the embedded microcontroller detects that a person is in an elevator car by using the pyroelectric sensor and detects that an elevator car door is in a closed state by using the Hall sensor, the time length is calculated in the system, the elevator is judged to be trapped by the person and has a fault when the set time is exceeded, and the embedded microcontroller immediately and automatically dials three levels of rescue telephones in the memory in sequence;
the minimum system of the embedded microcontroller consists of a main control chip with the model number of STM32F103VCT6, an 8MHZ crystal oscillator, a 22pF capacitor and a 0.1uF capacitor. The minimum system of the embedded microcontroller consists of a reset circuit, a clock circuit, a starting circuit, a capacitor and a debugging interface. At the moment when the RESET circuit is powered on, the capacitor is charged, the RESET is at a short low level, and the duration of the RESET signal is about 1 ms. The clock circuit consists of an 8MHz crystal oscillator and two 22pF capacitors, is connected to OSC _ IN and OSC _ OUT pins of the chip and provides a stable and reliable clock signal for the system. The starting circuit is connected to pins BOOT0 and BOOT1 of the chip, the BOOT0 is high level, the BOOT1 is low level, the slave system memory is started, the BOOT0 is high level, and the BOOT1 is high level, the slave system memory is started. As shown in fig. 1.
The 4G communication circuit comprises a communication module, an SIM card slot, an SIM card, a radio frequency antenna interface circuit, a signal state indicating circuit, a microphone noise reduction circuit and a loudspeaker noise reduction circuit. The RST pin, the DATA pin, the VCC pin and the CLK pin of the SIM card slot are respectively connected to a pin 20, a pin 22, a pin 21 and a pin 23 of the communication module; the antenna is connected to 32 pins of the communication module, and the other four pins are connected to GND; the indicating lamp circuit is connected to a pin 13 of the communication module, and the communication module adjusts the level of the pin 13 to turn on or off the triode, so that the LED lamp is turned on or off; two pins of the microphone are respectively connected to a pin 18 and a pin 19 of the communication module; two pins of the loudspeaker are respectively connected to a pin 16 and a pin 17 of the communication module; the communication module is connected with and communicates with the pins 8 and 9 of the STM32F103VCT6 through the serial communication port. The circuit is shown in fig. 2.
The pyroelectric sensing circuit comprises a first noise reduction capacitor, a first photoelectric coupler and a first current limiting resistor. Pyroelectric sensor's data pin 1 connects first current-limiting resistor in series and inserts first optoelectronic coupler, and when pyroelectric sensor detected the change, first optoelectronic coupler can export corresponding high-low level, and this digital signal STM _ HS connects STM32F103VCT 6's 31 pins, as shown in FIG. 3.
the Hall sensing circuit comprises a Hall sensor, a second noise reduction capacitor, a second photoelectric coupler and a second current limiting resistor. Data pin 1 of hall sensor connects in series the second current-limiting resistor and inserts second optoelectronic coupler, and when hall sensor detected the change, second optoelectronic coupler can export corresponding high-low level, and this digital signal STM _ DS connects STM32F103VCT 6's 34 pins. The circuit is shown in fig. 4.
the one-key dialing circuit comprises a key, a third resistor and a third capacitor. A third capacitor of 0.1uF is connected in parallel across the button for mechanical debounce, and a third resistor of 10K pulls pin 1 of key up to high level and connects to pin 76 of STM32F103VCT6, as shown in FIG. 5.
the power supply circuit comprises a 4.2V power supply and a 3.3V power supply. An external power supply is connected with a pin 2 of the first voltage stabilizing chip MIC29302, and a pin 4 of the chip can stabilize a power supply with output voltage of 4.2V and supply power for the communication circuit. An external power supply is connected with the 3 pins of the second voltage stabilization chip AMS1117-3.3, and the 2 pins of the chip can stabilize a power supply with an output voltage of 3.3V to supply power to the main control chip, as shown in fig. 6.
the real-time clock circuit comprises a clock chip PCF8563, a 32.768KHz crystal oscillator, a diode, a battery, a capacitor and a resistor. The two ends of the crystal oscillator are connected with a pin 1 and a pin 2 of the clock chip PCF8563, and the anode of the battery is connected with a pin 8 of the clock chip PCF8563 through a diode. Pins 5 and 6 of the clock chip PCF8563 are connected to pins 52 and 51 of the main control chip, respectively, as shown in FIG. 7.
the data storage circuit comprises an SD card slot, an SD card, a pull-up resistor and a capacitor, wherein pins 1, 2, 5 and 7 of the SD card slot are respectively connected to pins 81, 82, 83 and 84 of the main control chip through the pull-up resistor, as shown in FIG. 8.
example two:
the control method based on the elevator emergency call system comprises the following steps:
1) When the pyroelectric sensor detects that people exist in the elevator car and the Hall sensor detects that the elevator door is in a closed state, the minimum system of the embedded microcontroller starts timing by using a timer in the system;
2) after the set value is reached, detecting that people still exist in the elevator car, and judging that the elevator is trapped by people when the elevator door is in a closed state, wherein the embedded microcontroller sends a call instruction to the 4G communication circuit by using the serial port, and the 4G communication circuit immediately dials an appointed rescue call; in addition, trapped passengers can dial a designated rescue telephone to wait for rescue by pressing a key in the one-key dialing circuit, and the embedded microcontroller controls the real-time clock circuit to acquire trapping time and dialing time;
3) And after the call is finished, the minimum system control data storage circuit of the embedded microcontroller stores the telephone recording file into the SD card.
in this embodiment, the rescue phone is divided into three levels: the first level is a property company, the second level is an elevator maintenance company, and the third level is an emergency rescue platform; the embedded microcontroller dials the designated rescue telephone through 4G communication in the following sequence: dialing from the first level, dialing the second level when the first level is not connected, dialing the third level when the second level is not connected, wherein the third level is an elevator emergency rescue platform, and people are on duty within 24 hours to ensure smooth rescue. Once the telephone is connected, the system starts recording, and the rescue call content is recorded and stored locally. The remote management platform can read the locally stored recording file by utilizing the internet.
what has not been described in detail in the present invention is the prior art or can be realized by the prior art, and the specific embodiment of the present invention is only the preferred embodiment of the present invention, which is not intended to limit the scope of the present invention. All equivalent changes and modifications made according to the content of the claims of the present invention should be regarded as the technical scope of the present invention.
Claims (8)
1. An elevator emergency calling system is characterized by comprising an embedded microcontroller minimum system, a 4G communication circuit, a pyroelectric sensing circuit, a Hall sensing circuit, a one-key dialing circuit, a power supply circuit, a real-time clock circuit and a data storage circuit; the minimum system of the embedded microcontroller comprises a main control chip, and a reset circuit, a clock circuit, a starting circuit and a debugging interface which are electrically connected with the main control chip;
The 4G communication circuit, the pyroelectric sensing circuit, the Hall sensing circuit, the one-key dialing circuit, the power circuit, the real-time clock circuit and the data storage circuit are respectively connected with different pins of the main control chip through channel wires.
2. the elevator emergency call system according to claim 1, wherein the pyroelectric sensing circuit comprises a pyroelectric sensor installed in the elevator car for detecting whether a person is in the elevator car, and a first noise reduction capacitor, a first photocoupler and a first current limiting resistor; a data pin of the pyroelectric sensor is connected with a first current-limiting resistor in series and then is connected with a first photoelectric coupler, and the other pin of the first photoelectric coupler is connected with a first noise reduction capacitor and then is connected with a corresponding pin of the main control chip; when the pyroelectric sensor detects that a person is in the elevator car, the first photoelectric coupler outputs a corresponding high level and a corresponding low level and sends a level signal to the main control chip;
The Hall sensing circuit comprises a Hall sensor, a second noise reduction capacitor, a second photoelectric coupler and a second current limiting resistor, wherein the Hall sensor is arranged on the elevator car door and used for detecting whether the elevator door is closed; a pin of data of the Hall sensor is connected with a second current-limiting resistor in series and then is connected with a second photoelectric coupler, and the other pin of the second photoelectric coupler is connected with a second noise reduction capacitor and then is connected with a corresponding pin of the main control chip; when the Hall sensor detects that the opening and closing state of the elevator car door changes, the second photoelectric coupler outputs corresponding high and low levels and sends the level signals to the main control chip.
3. The elevator emergency call system according to claim 1 or 2, wherein the 4G communication circuit comprises a communication module, a SIM card slot connected with different pins of the communication module through wires, a SIM card inserted in the slot, a radio frequency antenna interface circuit, a signal state indicating circuit, a microphone noise reduction circuit and a speaker noise reduction circuit;
And the communication module is connected with the main control chip for communication through a serial communication port.
4. the elevator emergency call system according to claim 3, wherein said one-touch dialing circuit comprises a touch key installed in a door of an elevator car, and a third resistor and a third capacitor for mechanical debounce; and the third capacitor is connected in parallel with the two ends of the button, then is connected with the third resistor in series, and then is connected with the corresponding pin of the main control chip through a wire.
5. The elevator emergency call system of claim 4, wherein the power circuit comprises a 4.2V power circuit and a 3.3V power circuit;
the external power supply is connected with the 2 pins of the first voltage stabilizing chip, and the 4 pins of the first voltage stabilizing chip stabilize a power supply with output voltage of 4.2V and supply power for the communication circuit;
and the external power supply is connected with the 3 pins of the second voltage stabilizing chip, and the 2 pins of the second voltage stabilizing chip stabilize a power supply with the output voltage of 3.3V and supply power for the main control chip.
6. The elevator emergency call system according to claim 5, wherein said real time clock circuit comprises a clock chip PCF8563, a 32.768KHz crystal oscillator, a diode and a battery; two ends of the crystal oscillator are connected with a pin 1 and a pin 2 of the clock chip PCF8563, and the anode of the battery is connected with a pin 8 of the clock chip PCF8563 through a diode; pins 5 and 6 of the clock chip PCF8563 are respectively connected to corresponding pins of the main control chip.
7. The elevator emergency call system according to claim 6, wherein the data storage circuit comprises an SD card slot, an SD card inserted in the SD card slot and a pull-up resistor, and a pin of the SD card slot is connected with a corresponding pin of the main control chip in a pull-up mode through the resistor.
8. The elevator emergency call system according to claim 7, wherein the main control chip has a model number of STM32F103VCT6, the first voltage stabilization chip has a model number of MIC29302, and the second voltage stabilization chip has a model number of AMS 1117-3.3.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920797840.3U CN209805825U (en) | 2019-05-29 | 2019-05-29 | elevator emergency calling system |
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| CN201920797840.3U CN209805825U (en) | 2019-05-29 | 2019-05-29 | elevator emergency calling system |
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| CN209805825U true CN209805825U (en) | 2019-12-17 |
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| CN201920797840.3U Withdrawn - After Issue CN209805825U (en) | 2019-05-29 | 2019-05-29 | elevator emergency calling system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110113079A (en) * | 2019-05-29 | 2019-08-09 | 南京市特种设备安全监督检验研究院 | A kind of elevator emergency calling system and control method |
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2019
- 2019-05-29 CN CN201920797840.3U patent/CN209805825U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110113079A (en) * | 2019-05-29 | 2019-08-09 | 南京市特种设备安全监督检验研究院 | A kind of elevator emergency calling system and control method |
| CN110113079B (en) * | 2019-05-29 | 2024-04-26 | 南京市特种设备安全监督检验研究院 | Elevator emergency call system and control method |
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