CN220431964U - Emergency automatic alarm - Google Patents

Abstract

The utility model discloses an emergency automatic alarm, which comprises a singlechip, wherein the singlechip is sequentially connected with an alarm output circuit, a voice circuit, an operation lamp, a motion sensor, a microwave sensor, an air pressure height sensor and a key, and a level conversion module is arranged between the microwave sensor and the singlechip; the side of the singlechip is provided with a power circuit which is respectively and electrically connected with the singlechip, the alarm output circuit, the voice circuit, the running lamp, the motion sensor, the microwave sensor, the air pressure height sensor, the key and the level conversion module. The utility model is an active automatic alarm without manually pressing an alarm button; the alarm can actively detect and automatically trigger the elevator intercom system no matter the elevator is trapped in an adult, the old with inconvenient actions, children or other people which can not or are not aware of pressing the alarm button, thereby achieving the purpose of rapidly rescuing trapped people.

Description

Emergency automatic alarm

Technical Field

The utility model relates to the technical field of automatic alarm systems, in particular to an emergency automatic alarm which is suitable for detecting elevator trapping, elevator emergency stop and elevator abnormality so as to automatically trigger an elevator alarm.

Background

In the elevator in new installation, a trapping alarm call device is generally arranged. After a person is trapped, the person can contact the elevator duty room to carry out voice communication to call for help after pressing an alarm button on the alarm. After the staff in the duty room receives the help seeking information, the staff can be quickly organized to rescue the trapped staff, so that the occurrence of the personnel trapping accidents of the elevator can be avoided.

The alarm information is actively triggered by people, if only the old with inconvenient movement, children with insufficient height or other people incapable of actively triggering the alarm exist in the elevator. Such a group of people is always trapped in the elevator without being known, and thus a serious elevator trapping accident may be caused.

There are also related alarms on the market. And a pyroelectric sensor and a device for acquiring the elevator state from an elevator circuit or a switch are adopted to realize alarm. The device needs to turn on a control board or a switch of the elevator to acquire elevator running data to judge the current running state of the elevator, and meanwhile, a pyroelectric sensor detects whether a person exists in the elevator. If the elevator is detected to be in a non-running state, the elevator alarm system is started to send out a distress signal.

Such alarms have the following disadvantages: (hereinafter referred to as market alarm)

1. The market alarm needs to open an elevator operation circuit board or a switch to acquire elevator operation data. The elevator circuit board needs to be welded or connected, and if the elevator circuit board is improperly installed, the elevator circuit or the alarm circuit is easily damaged, so that the elevator operation hidden trouble can be caused.

2. Many elevator varieties in the market, the need to modify an elevator circuit board or a switch to acquire data is different, so that the compatibility of a market alarm is insufficient, and part of elevators are possibly incompatible or unstable after being installed. Corresponding hidden trouble is generated for the running of the elevator.

3. When the elevator circuit board fails, the running data is inaccurate, so that the market alarm receives incorrect data, and the market alarm can make incorrect false alarm or non-alarm according to the incorrect data. Thereby making the alarm meaningless.

4. The market alarm adopts a GSM module alarm mode. The car is fully metal shielded, and a shielding effect can be generated on the wireless radio frequency signals, so that the distress signals cannot be output. So that the automatic alarm effect cannot be achieved.

5. The market alarm sensor adopts an infrared pyroelectric sensor to detect people in motion. However, the infrared pyroelectric sensor must be exposed outside the car and is easily damaged by people. But also is susceptible to dust, various light sources and heat sources. When the room temperature and the human body temperature are close, the detection sensitivity is reduced, and erroneous judgment can be caused by short-time failure.

For the problems in the related art, no effective solution has been proposed at present.

Disclosure of Invention

Aiming at the problems in the related art, the utility model provides an emergency automatic alarm to overcome the technical problems in the prior art.

For this purpose, the utility model adopts the following specific technical scheme:

an emergency automatic alarm comprises a singlechip, wherein the singlechip is sequentially connected with an alarm output circuit, a voice circuit, an operation lamp, a motion sensor, a microwave sensor, an air pressure height sensor and a key, and a level conversion module is arranged between the microwave sensor and the singlechip; the side of the singlechip is provided with a power circuit which is respectively and electrically connected with the singlechip, the alarm output circuit, the voice circuit, the running lamp, the motion sensor, the microwave sensor, the air pressure height sensor, the key and the level conversion module.

Further, the alarm output circuit comprises a resistor R8, a resistor R9, a triode Q2, a resistor R10, an LED7, a diode D3, a relay RLY1 and a switch S4; one end of a resistor R8 is sequentially connected with one end of a resistor R9 and a third end of a triode Q2, the other end of the resistor R9 is grounded, a second end of the triode Q2 is grounded, a first end of the triode Q2 is sequentially connected with a second end of a relay rliy 1, an anode of a diode D3 and a cathode of an LED7, the anode of the LED7 is connected with one end of a resistor R10, the other end of the resistor R10 is connected with an output voltage 5V, the cathode of the diode D3 is sequentially connected with a first end of a relay rliy 1 and an output voltage 5V, a fourth end of the relay rliy 1 is connected with a seventh end and is connected with a first end of a switch S4, a third end of the relay rliy 1 is connected with a sixth end and is connected with a second end of the switch S4, and a fifth end of the relay rliy 1 is connected with an eighth end and is connected with a third end of the switch S4.

Further, the voice circuit includes a chip U3, a chip U2, an LED8, a resistor R24, a capacitor C18, a capacitor C22, a resistor R20, a capacitor C19, a capacitor C15, a resistor R22, a resistor R23, a capacitor C17, a resistor R21, a resistor R25, a capacitor C21, a capacitor C16, and a switch S8; wherein the second end of the chip U3 is connected with the negative electrode of the LED8, the positive electrode of the LED8 is connected with one end of the resistor R24, the other end of the resistor R24 is connected with the output voltage 3V3, the eighth end of the chip U3 is connected with one end of the capacitor C15, the other end of the capacitor C15 is grounded, the first end of the chip U3 is grounded, the fifth end of the chip U3 is sequentially connected with one end of the resistor R20 and one end of the capacitor C22, the other end of the resistor R20 is grounded, the other end of the capacitor C22 is connected with one end of the resistor R21, the other end of the resistor R21 is connected with the fourth end of the chip U2, the first end of the chip U2 is sequentially connected with one end of the resistor R22, one end of the resistor R23 and one end of the capacitor C17, the other end of the resistor R22 is connected with the output voltage 5V, the other end of the resistor R23 and the other end of the capacitor C17 are grounded, the third end of the chip U2 is connected with one end of the resistor R25, the other end of the resistor R25 is connected with one end of the capacitor C21, the other end of the capacitor C21 is grounded, the second end of the chip U2 is connected with one end of the capacitor C16, the other end of the capacitor C16 is grounded, the seventh end of the chip U2 is grounded, the eighth end of the chip U2 is connected with one end of the capacitor C18, the other end of the capacitor C18 is connected with the first end of the switch S8, the fifth end of the chip U2 is connected with the second end of the switch S8, the third end of the switch S8 is connected with the fourth end and grounded, one ends of the C20 and the C19 are grounded, the other end of the C20 is connected with the output voltage 3V2, and the other end of the C19 is connected with the output voltage 5V.

Further, the power supply circuit comprises a first power supply, and the first power supply is electrically connected with the second power supply; the first power supply comprises a switch S3, a diode D1, a capacitor EC2, a capacitor C23, a chip U6, a diode D2, an inductor L1, a capacitor EC1, a capacitor C3, a resistor R6 and an LED6; the second end of the switch S3 is grounded, the first end of the switch S3 is connected with the positive electrode of the diode D1, the negative electrode of the diode D1 is sequentially connected with the positive electrode of the capacitor EC2, one end of the capacitor C23 and the first end of the chip U6, the negative electrode of the capacitor EC2 and the other end of the capacitor C23 are grounded, the fourth end, the fifth end, the sixth end, the seventh end and the eighth end of the chip U6 are grounded, the second end of the chip U6 is sequentially connected with the negative electrode of the diode D2 and one end of the inductor L1, the positive electrode of the diode D2 is grounded, the other end of the inductor L1 is sequentially connected with the positive electrode of the capacitor EC1 and one end of the capacitor C3, the negative electrode of the capacitor EC1 and the other end of the capacitor are grounded, one end of the resistor R6 is connected with the output voltage 5V, the other end of the resistor R6 is connected with the positive electrode of the LED6, and the negative electrode of the LED6 is grounded; the second power supply comprises a chip U5, a capacitor C6, a resistor R7, a capacitor C4, a capacitor C5 and a capacitor C7; the first end of the chip U5 is sequentially connected with one end of the capacitor C6 and one end of the resistor R7, the other end of the capacitor C6 is grounded, the other end of the resistor R7 is connected with the third end of the chip U5, the second end of the chip U5 is grounded, the fourth end of the chip U5 is connected with one end of the capacitor C5, the other end of the capacitor C5 is grounded, the fifth end of the chip U5 is sequentially connected with one end of the capacitor C4 and one end of the capacitor C7, and the other ends of the capacitor C4 and the capacitor C7 are grounded.

The beneficial effects of the utility model are as follows:

(1) The utility model relates to an active automatic alarm, which automatically triggers an alarm after an elevator scram, an elevator abnormal condition or people are trapped in an elevator for a certain time is detected, and an alarm button is not required to be manually pressed. The alarm can actively detect and automatically trigger the elevator intercom system no matter the elevator is trapped in an adult, the old with inconvenient actions, children or other people which can not or are not aware of pressing the alarm button, thereby achieving the purpose of rapidly rescuing trapped people.

(2) The alarm of the utility model does not damage the original circuit of the elevator during installation, and ensures the safe operation of the elevator. The alarm is internally integrated with a motion sensor and a barometric pressure sensor, so that the real operation data of the elevator can be acquired. Without acquiring data from the elevator circuit board or switches. When the elevator fails, no alarm or false alarm is generated because the acquired elevator data is wrong. The alarm circuit interface is simple. The device is simple, convenient and quick to install by only connecting an input power supply with an output alarm trigger signal. The alarm uses a microwave sensor (millimeter wave radar sensor). Because millimeter waves can penetrate through non-conductor materials such as plastics, the alarm can be installed in a totally enclosed manner by the housing. And the millimeter wave radar sensor is not interfered by temperature, light and dust, and the acquired data is more stable and accurate. The alarm is directly connected with an alarm button interface in the car. No wireless alarm device such as GSM is needed. The wireless signal transmission can be effectively prevented from being interfered, and the cost can be effectively reduced. The alarm supports an external door detection switch, and can effectively detect whether the elevator door is in an open state or a closed state. Thereby improving the false alarm rate of detection. The alarm integrates the alarm pacifying voice function, and can pacify trapped people when the elevator fails. Can effectively avoid the overstress behavior of trapped personnel caused by fear tension.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a functional block diagram of an emergency automatic alarm according to an embodiment of the present utility model;

FIG. 2 is a schematic circuit diagram of an alarm output circuit in an emergency automatic alarm according to an embodiment of the present utility model;

FIG. 3 is a schematic circuit diagram of a voice circuit in an emergency automatic alarm according to an embodiment of the present utility model;

FIG. 4 is a schematic circuit diagram of a first power supply in an emergency automatic alarm according to an embodiment of the present utility model;

FIG. 5 is a schematic circuit diagram of a second power supply in an emergency automatic alarm according to an embodiment of the present utility model;

FIG. 6 is a flow chart of the program operation in an emergency automatic alarm according to an embodiment of the present utility model;

fig. 7 is a diagram of the connection of an alarm in an emergency automatic alarm according to an embodiment of the present utility model.

In the figure:

1. a single chip microcomputer; 2. an alarm output circuit; 3. a voice circuit; 4. running a lamp; 5. a motion sensor; 6. a microwave sensor; 7. a barometric pressure altitude sensor; 8. a key; 9. a level conversion module; 10. a power supply circuit.

Detailed Description

For the purpose of further illustrating the various embodiments, the present utility model provides the accompanying drawings, which are a part of the disclosure of the present utility model, and which are mainly used to illustrate the embodiments and, together with the description, serve to explain the principles of the embodiments, and with reference to these descriptions, one skilled in the art will recognize other possible implementations and advantages of the present utility model, wherein elements are not drawn to scale, and like reference numerals are generally used to designate like elements.

According to an embodiment of the present utility model, an emergency automatic alarm is provided.

The utility model is further described with reference to the accompanying drawings and the specific embodiments, as shown in fig. 1-7, the emergency automatic alarm according to the embodiment of the utility model comprises a singlechip 1, wherein the singlechip 1 is sequentially connected with an alarm output circuit 2, a voice circuit 3, an operation lamp 4, a motion sensor 5, a microwave sensor 6, an air pressure height sensor 7 and a key 8, and a level conversion module 9 is arranged between the microwave sensor 6 and the singlechip 1; the side of the singlechip 1 is provided with a power circuit 10, and the power circuit 10 is respectively and electrically connected with the singlechip 1, the alarm output circuit 2, the voice circuit 3, the running lamp 4, the motion sensor 5, the microwave sensor 6, the air pressure height sensor 7, the keys 8 and the level conversion module 9.

By means of the scheme, the utility model is an active automatic alarm without manually pressing an alarm button; the alarm can actively detect and automatically trigger the elevator intercom system no matter the elevator is trapped in an adult, the old with inconvenient actions, children or other people which can not or are not aware of pressing the alarm button, thereby achieving the purpose of rapidly rescuing trapped people.

In one embodiment, alarm output circuit 2 includes resistor R8, resistor R9, transistor Q2, resistor R10, LED7, diode D3, relay RLY1, and switch S4; one end of a resistor R8 is sequentially connected with one end of a resistor R9 and a third end of a triode Q2, the other end of the resistor R9 is grounded, a second end of the triode Q2 is grounded, a first end of the triode Q2 is sequentially connected with a second end of a relay rliy 1, an anode of a diode D3 and a cathode of an LED7, the anode of the LED7 is connected with one end of a resistor R10, the other end of the resistor R10 is connected with an output voltage 5V, the cathode of the diode D3 is sequentially connected with a first end of a relay rliy 1 and an output voltage 5V, a fourth end of the relay rliy 1 is connected with a seventh end and is connected with a first end of a switch S4, a third end of the relay rliy 1 is connected with a sixth end and is connected with a second end of the switch S4, and a fifth end of the relay rliy 1 is connected with an eighth end and is connected with a third end of the switch S4.

In one embodiment, the voice circuit 3 includes a chip U3, a chip U2, an LED8, a resistor R24, a capacitor C18, a capacitor C22, a resistor R20, a capacitor C19, a capacitor C15, a resistor R22, a resistor R23, a capacitor C17, a resistor R21, a resistor R25, a capacitor C21, a capacitor C16, and a switch S8; wherein the second end of the chip U3 is connected with the negative electrode of the LED8, the positive electrode of the LED8 is connected with one end of the resistor R24, the other end of the resistor R24 is connected with the output voltage 3V3, the eighth end of the chip U3 is connected with one end of the capacitor C15, the other end of the capacitor C15 is grounded, the first end of the chip U3 is grounded, the fifth end of the chip U3 is sequentially connected with one end of the resistor R20 and one end of the capacitor C22, the other end of the resistor R20 is grounded, the other end of the capacitor C22 is connected with one end of the resistor R21, the other end of the resistor R21 is connected with the fourth end of the chip U2, the first end of the chip U2 is sequentially connected with one end of the resistor R22, one end of the resistor R23 and one end of the capacitor C17, the other end of the resistor R22 is connected with the output voltage 5V, the other end of the resistor R23 and the other end of the capacitor C17 are grounded, the third end of the chip U2 is connected with one end of the resistor R25, the other end of the resistor R25 is connected with one end of the capacitor C21, the other end of the capacitor C21 is grounded, the second end of the chip U2 is connected with one end of the capacitor C16, the other end of the capacitor C16 is grounded, the seventh end of the chip U2 is grounded, the eighth end of the chip U2 is connected with one end of the capacitor C18, the other end of the capacitor C18 is connected with the first end of the switch S8, the fifth end of the chip U2 is connected with the second end of the switch S8, the third end of the switch S8 is connected with the fourth end and grounded, one ends of the C20 and the C19 are grounded, the other end of the C20 is connected with the output voltage 3V2, and the other end of the C19 is connected with the output voltage 5V.

In one embodiment, the power circuit 10 includes a first power source electrically connected to a second power source; the first power supply comprises a switch S3, a diode D1, a capacitor EC2, a capacitor C23, a chip U6, a diode D2, an inductor L1, a capacitor EC1, a capacitor C3, a resistor R6 and an LED6; the second end of the switch S3 is grounded, the first end of the switch S3 is connected with the positive electrode of the diode D1, the negative electrode of the diode D1 is sequentially connected with the positive electrode of the capacitor EC2, one end of the capacitor C23 and the first end of the chip U6, the negative electrode of the capacitor EC2 and the other end of the capacitor C23 are grounded, the fourth end, the fifth end, the sixth end, the seventh end and the eighth end of the chip U6 are grounded, the second end of the chip U6 is sequentially connected with the negative electrode of the diode D2 and one end of the inductor L1, the positive electrode of the diode D2 is grounded, the other end of the inductor L1 is sequentially connected with the positive electrode of the capacitor EC1 and one end of the capacitor C3, the negative electrode of the capacitor EC1 and the other end of the capacitor are grounded, one end of the resistor R6 is connected with the output voltage 5V, the other end of the resistor R6 is connected with the positive electrode of the LED6, and the negative electrode of the LED6 is grounded; the second power supply comprises a chip U5, a capacitor C6, a resistor R7, a capacitor C4, a capacitor C5 and a capacitor C7; the first end of the chip U5 is sequentially connected with one end of the capacitor C6 and one end of the resistor R7, the other end of the capacitor C6 is grounded, the other end of the resistor R7 is connected with the third end of the chip U5, the second end of the chip U5 is grounded, the fourth end of the chip U5 is connected with one end of the capacitor C5, the other end of the capacitor C5 is grounded, the fifth end of the chip U5 is sequentially connected with one end of the capacitor C4 and one end of the capacitor C7, and the other ends of the capacitor C4 and the capacitor C7 are grounded.

The device is mainly used for automatically playing pacifying voice in a short time after the elevator is trapped due to various faults, if the trapped person cannot or does not know to press the alarm button, the device can pacify the trapped person, and therefore other accidents caused by the emotional agitation of the trapped person are avoided. Meanwhile, the alarm can also actively trigger an intercom system in the elevator to send out alarm information of trapped people. The elevator rescue system can timely inform staff in an elevator duty room to rescue trapped staff in the elevator, so that serious accidents caused by trapped staff in the elevator can be avoided. The utility model is also mainly used for emergency stop fault or abnormal elevator standstill in elevator operation, and can automatically trigger an intercom system in the elevator to inform an on-duty room to confirm and check.

The alarm is installed inside the elevator car and consists of a probe part and a main board. The probe part is integrated with a microwave sensor 6 (millimeter wave radar sensor), a work indicator lamp, a control switch and the like, so that the running state of the alarm can be clearly observed. The main board part is internally integrated with a motion sensor 5, an air pressure height sensor 7, a proximity door detection switch and other related sensors for acquiring data. The main board is also integrated with a voice circuit 3 which can provide various voice information during operation and alarm. The alarm provides a power input and an alarm output interface to the outside, and the whole system is very simple to connect.

The motion sensor is a multi-axis gyroscope and a gravity acceleration sensor. The common module types are MPU6050, ADXL345, MPU9250, MMA7361 and the like. The millimeter wave radar sensor described above is a sensor of 2.4G or higher frequency. The air pressure height sensor is HP303.

The function of the utility model is as follows:

motion sensor 5: and the elevator real running state is detected in real time, and the output data is transmitted to the singlechip 1 for analysis and processing. Various running states of the elevator can be detected and an alarm can be given according to the states.

Barometric pressure altitude sensor 7: is responsible for detecting whether the elevator is currently in motion.

Microwave sensor (millimeter wave radar sensor): is responsible for detecting whether a person exists in the elevator in real time.

And a level conversion module: and converting the data detected by the millimeter wave radar sensor and sending the data to the singlechip 1 for processing.

Power supply circuit 10: the power supply circuit is responsible for generating the power required by each module.

Alarm output circuit 2: when the singlechip 1 detects that people are trapped in the elevator for a period of time, the alarm output circuit 2 is controlled to send an alarm signal, and an alarm button is triggered to realize alarm.

Singlechip 1 (including watchdog): the singlechip 1 is responsible for collecting the data of the microwave sensor 6 and the motion sensor 5, analyzing whether people are trapped in the elevator, and sending an alarm signal if the trapped people occur. The watchdog can realize that the working state before can normally resume after the alarm is disturbed accidentally.

Voice circuit 3: various voice signals can be played when the device is started, closed, opened or alarmed. When the elevator is in a condition, soothing voice can be played.

Switching circuit and running light 4: the alarm is provided with a switch at the probe part, so that an maintainer can prevent false alarm when overhauling the elevator, and the alarm can be opened or closed in real time. The running light 4 of the probe portion blinks to indicate the running state when the alarm is in the on state, and the running light 4 is turned off when the alarm is in the off state.

The working principle of the whole alarm is that a single chip microcomputer 1 is used as a core. The singlechip 1 can constantly read the data of the motion sensor 5 and the air pressure height sensor 7 and detect whether the elevator is in a motion state. At the same time, data of the microwave sensor 6 and the like are acquired. When the elevator has the following three conditions, an alarm signal is sent outwards. Case 1: the elevator suddenly finds a sudden stop. Case 2: the elevator is not closed for a long time, the elevator is in a static state, and people are trapped in the elevator. Case 3: the elevator is stationary and the door is closed, a person is detected, the time exceeds 1 minute, and the person is trapped in the elevator.

When the elevator operator receives the alarm information. The alarm will not emit an alarm signal for 30 minutes. After more than 30 minutes, the alarm will activate the detection and alarm functions again. The function of delaying for 30 minutes prevents the alarm from repeatedly alarming in a short time after receiving the alarm information, thereby affecting elevator rescue. The program flow chart is shown in fig. 6.

The elevator trapping alarm is very simple to connect, and two groups of interfaces are provided, wherein one group is power input, and only 9-30V direct current power supply is needed to supply power. The other group of interfaces are output interfaces, and the other group of interfaces are connected with the original alarm buttons in the elevator. The alarm connection diagram is shown in fig. 7.

The elevator trapping alarm is very simple to install, and only the alarm probe is required to be installed in the middle of an elevator car, and the led power line and the alarm output line are connected with a 9-30V power supply and an alarm button in the elevator car.

After the system is powered on, the singlechip 1 can perform initialization configuration on each module and parts. The singlechip 1 reads the external configuration and the data of each module and parts. When the motion sensor 5MOD1 detects the sudden stop of the elevator, the singlechip 1 can acquire the data to analyze and judge, the system can play pacifying voice when the data exceeds preset data, and the alarm output circuit 2 drives the relay, so that the alarm circuit is triggered to realize the sudden stop alarm.

When the singlechip 1 detects that the elevator door is closed, the microwave sensor 6MOD2 detects a person, and after a certain time is exceeded. The singlechip 1 also triggers a voice playing and alarming circuit to realize the alarm of trapping people.

Program operation flow chart as shown in fig. 6.

The alarm consists of a probe board and a main board. During installation, the probe is connected to the main board of the alarm through a configuration line, and then the output of a main board relay of the alarm is connected with an original elevator alarm device. And then the main board of the alarm is connected with a 9-30V power supply.

The alarm is schematically installed as shown in fig. 7.

The millimeter wave detection probe of the alarm is arranged in the car, so that the detection function of people in the elevator is realized. And the motion sensor 5, the barometric pressure sensor 7 and other circuitry are integrated on the motherboard. The main board is installed in the car interior space of the elevator. The probe is connected with the main board through a cable, so that the function detection of the whole alarm is realized.

Other sensors can be expanded on the basis of the scheme of the utility model, for example, other sensors such as infrared reflection, infrared correlation, infrared pyroelectric and the like are added to expand and realize the same or similar functions.

The technical key point of the utility model is that the motion sensor 5 and the air pressure height sensor 7 are utilized to actively acquire elevator operation data, an elevator circuit board is not required to be opened for circuit connection, and the accuracy of the acquired elevator data is high. The millimeter wave radar sensor is used for acquiring the state of a person in the elevator, and the millimeter wave sensor can avoid the interference of related interference sources such as a light source, a heat source, dust and the like.

The points to be protected include the following points:

1. the hardware architecture of the alarm is protected, and on the basis of the hardware architecture of the alarm, other functions are added and expanded on the circuit to realize the elevator people trapping alarm.

2. The protection adopts the motion sensor 5 and the air pressure altitude sensor 7 to actively acquire the elevator operation data state, and an elevator circuit is not required to be opened for connection.

3. The status of the person in the elevator is obtained with a microwave sensor 6 (millimeter wave radar sensor). The anti-interference performance is good compared with other sensors, and the sensor is stable and reliable.

4. The output interface of the alarm is directly connected with the button end of the original alarm, and no additional equipment is needed to send out alarm information.

5. The alarm can output relevant voice information and pacifying voice when relevant alarms.

In summary, by means of the above technical scheme of the utility model, the utility model is an active automatic alarm, and when an elevator scram, an elevator abnormal condition or people trapped in an elevator for a certain time are detected, the alarm is automatically triggered without manually pressing an alarm button. The alarm can actively detect and automatically trigger the elevator intercom system no matter the elevator is trapped in an adult, the old with inconvenient actions, children or other people which can not or are not aware of pressing the alarm button, thereby achieving the purpose of rapidly rescuing trapped people. The alarm of the utility model does not damage the original circuit of the elevator during installation, and ensures the safe operation of the elevator. The motion sensor 5 and the air pressure sensor 7 are integrated in the alarm, so that the real running data of the elevator can be acquired. Without acquiring data from the elevator circuit board or switches. When the elevator fails, no alarm or false alarm is generated because the acquired elevator data is wrong. The alarm circuit interface is simple. The device is simple, convenient and quick to install by only connecting an input power supply with an output alarm trigger signal. The alarm employs a microwave sensor 6 (millimeter wave radar sensor). Because millimeter waves can penetrate through non-conductor materials such as plastics, the alarm can be installed in a totally enclosed manner by the housing. And the millimeter wave radar sensor is not interfered by temperature, light and dust, and the acquired data is more stable and accurate. The alarm is directly connected with an alarm button interface in the car. No wireless alarm device such as GSM is needed. The wireless signal transmission can be effectively prevented from being interfered, and the cost can be effectively reduced. The alarm supports an external door detection switch, and can effectively detect whether the elevator door is in an open state or a closed state. Thereby improving the false alarm rate of detection. The alarm integrates the alarm pacifying voice function, and can pacify trapped people when the elevator fails. Can effectively avoid the overstress behavior of trapped personnel caused by fear tension.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (6)

1. The emergency automatic alarm comprises a single chip microcomputer (1), and is characterized in that the single chip microcomputer (1) is sequentially connected with an alarm output circuit (2), a voice circuit (3), an operation lamp (4), a motion sensor (5), a microwave sensor (6), an air pressure height sensor (7) and a key (8), and a level conversion module (9) is arranged between the microwave sensor (6) and the single chip microcomputer (1);

the side of singlechip (1) is provided with power supply circuit (10), just power supply circuit (10) respectively with singlechip (1) alarm output circuit (2) voice circuit (3) running lamp (4) motion sensor (5) microwave sensor (6) atmospheric pressure altitude sensor (7) button (8) reaches level conversion module (9) electricity is connected.

2. An emergency automatic alarm according to claim 1, wherein the alarm output circuit (2) comprises a resistor R8, a resistor R9, a transistor Q2, a resistor R10, an LED7, a diode D3, a relay rli 1 and a switch S4;

one end of the resistor R8 is sequentially connected with one end of the resistor R9 and a third end of the triode Q2, the other end of the resistor R9 is grounded, a second end of the triode Q2 is grounded, a first end of the triode Q2 is sequentially connected with a second end of the relay rliy 1, an anode of the diode D3 and a cathode of the LED7, an anode of the LED7 is connected with one end of the resistor R10, the other end of the resistor R10 is connected with an output voltage 5V, a cathode of the diode D3 is sequentially connected with the first end of the relay rliy 1 and the output voltage 5V, a fourth end of the relay rliy 1 is connected with a seventh end and is connected with a first end of the switch S4, a third end of the relay rliy 1 is connected with a sixth end and is connected with a second end of the switch S4, and a fifth end of the relay rliy 1 is connected with an eighth end and is connected with a third end of the switch S4.

3. The emergency automatic alarm according to claim 1, wherein the voice circuit (3) comprises a chip U3, a chip U2, an LED8, a resistor R24, a capacitor C18, a capacitor C22, a resistor R20, a capacitor C19, a capacitor C15, a resistor R22, a resistor R23, a capacitor C17, a resistor R21, a resistor R25, a capacitor C21, a capacitor C16 and a switch S8;

the second end of the chip U3 is connected to the negative electrode of the LED8, the positive electrode of the LED8 is connected to one end of the resistor R24, the other end of the resistor R24 is connected to one end of the output voltage 3V3, the eighth end of the chip U3 is connected to one end of the capacitor C15, the other end of the capacitor C15 is grounded, the first end of the chip U3 is grounded, the fifth end of the chip U3 is sequentially connected to one end of the resistor R20 and one end of the capacitor C22, the other end of the resistor R20 is grounded, the other end of the capacitor C22 is connected to one end of the resistor R21, the other end of the resistor R21 is connected to the fourth end of the chip U2, one end of the resistor R23 and one end of the capacitor C17 are sequentially connected, the other end of the resistor R22 is connected to the other end of the capacitor C5V, the other end of the resistor R23 is connected to the other end of the capacitor C2 is connected to the third end of the capacitor C20, the other end of the capacitor C2 is connected to the other end of the capacitor C25 is connected to the other end of the capacitor C2, the other end of the capacitor C21 is connected to the other end of the capacitor C2 is connected to the third end of the capacitor C20, the other end of the capacitor C21 is connected to the other end of the capacitor C2 is connected to the other end of the capacitor C21 is connected to the other end of the capacitor C2 is.

4. An emergency automatic alarm according to claim 1, wherein the power supply circuit (10) comprises a first power supply, the first power supply being electrically connected to a second power supply.

5. The emergency automatic alarm according to claim 4, wherein the first power supply comprises a switch S3, a diode D1, a capacitor EC2, a capacitor C23, a chip U6, a diode D2, an inductor L1, a capacitor EC1, a capacitor C3, a resistor R6 and an LED6;

the second end of the switch S3 is grounded, the first end of the switch S3 is connected with the positive electrode of the diode D1, the negative electrode of the diode D1 is sequentially connected with the positive electrode of the capacitor EC2, one end of the capacitor C23 and the first end of the chip U6, the negative electrode of the capacitor EC2 and the other end of the capacitor C23 are grounded, the fourth end, the fifth end, the sixth end, the seventh end and the eighth end of the chip U6 are grounded, the second end of the chip U6 is sequentially connected with the negative electrode of the diode D2 and one end of the inductor L1, the positive electrode of the diode D2 is grounded, the other end of the inductor L1 is sequentially connected with the positive electrode of the capacitor EC1 and one end of the capacitor C3, the negative electrode of the capacitor EC1 and the other end of the capacitor are grounded, one end of the resistor R6 is connected with the output voltage 5V, the other end of the resistor R6 is connected with the positive electrode of the LED6 and the negative electrode of the LED6 is grounded.

6. The emergency automatic alarm according to claim 5, wherein the second power supply comprises a chip U5, a capacitor C6, a resistor R7, a capacitor C4, a capacitor C5 and a capacitor C7;

the first end of the chip U5 is sequentially connected with one end of the capacitor C6 and one end of the resistor R7, the other end of the capacitor C6 is grounded, the other end of the resistor R7 is connected with the third end of the chip U5, the second end of the chip U5 is grounded, the fourth end of the chip U5 is connected with one end of the capacitor C5, the other end of the capacitor C5 is grounded, the fifth end of the chip U5 is sequentially connected with one end of the capacitor C4 and one end of the capacitor C7, and the other ends of the capacitor C4 and the capacitor C7 are grounded.