CN111204628B - Intelligent elevator safety key input device and method for preventing and controlling virus infection - Google Patents
Intelligent elevator safety key input device and method for preventing and controlling virus infection Download PDFInfo
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- CN111204628B CN111204628B CN202010125733.3A CN202010125733A CN111204628B CN 111204628 B CN111204628 B CN 111204628B CN 202010125733 A CN202010125733 A CN 202010125733A CN 111204628 B CN111204628 B CN 111204628B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/46—Adaptations of switches or switchgear
- B66B1/461—Adaptations of switches or switchgear characterised by their shape or profile
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3407—Setting or modification of parameters of the control system
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
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Abstract
An intelligent elevator safety key input device for preventing and controlling virus infection comprises an elevator safety key, wherein a control circuit is arranged in the elevator safety key and consists of a microcontroller and a peripheral sub-circuit, a light intensity detection circuit is arranged in the elevator safety key, the light intensity detection circuit memorizes the current ambient light intensity under the control of the microcontroller and converts the current ambient light intensity into a voltage signal to be stored in a memory capacitor, a reflection type photoelectric sensor receiver is used for converting the total light intensity reflected into the safety key into the voltage signal, the voltage signal is input into a voltage comparator after passing through an in-phase buffer and is compared with the memory voltage to transmit the signal to the microcontroller, after the microcontroller detects a key required by a user, the signal is output to control a safety key driving circuit, and after being driven by a photoelectric coupler and a triode Q4, a normally open contact of a relay is controlled to be closed, so that the elevator safety key is automatically pressed, and the invention can effectively prevent viruses from being transmitted through a car type elevator key.
Description
Technical Field
The invention relates to the technical field of elevators, in particular to an intelligent elevator safety key input device and method for preventing and controlling virus infection.
Background
The lift-cabin type elevator which is seen everywhere in life is generally totally enclosed, and although a few of the lift-cabin type elevators are provided with air exhausting and ventilating devices, the air circulation in the lift-cabin type elevator is still poor.
Some car type elevators of high-rise buildings are easy to retain viruses for a long time because the car is almost closed, and particularly, the elevator keys frequently contacted by users are easy to be attached with the viruses. However, the elevator is an important living facility, and is indispensable, and a user needs to press the button of the corresponding floor and the button for opening and closing the door to use the elevator, which provides convenience for spreading viruses.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide an intelligent elevator safety key input device and method for preventing and controlling virus infection, which can enable a user to start the function of a corresponding key without contacting an elevator key and only approach the elevator key, can effectively prevent virus from being spread through a car type elevator key, have the characteristics of simple structure and good implementation effect, and play an important role in preventing epidemic situation from spreading.
In order to achieve the purpose, the invention adopts the technical scheme that:
an intelligent elevator safety key input device for preventing and controlling virus infection comprises a control circuit, wherein the control circuit is composed of a microcontroller 1 and a peripheral sub-circuit, the peripheral sub-circuit comprises a reflection type photoelectric sensor receiver 2, a reflection type photoelectric sensor emitter 6 and a triode Q, an in-phase buffer 3, a voltage comparator 4, a photoelectric coupler 7, a diode D, a relay 8, an elevator safety key 9, an LED display device 10 and a necessary resistance capacitor, a light intensity detection circuit is arranged in the elevator safety key 9, the light intensity detection circuit memorizes the current ambient light intensity under the control of the microcontroller 1 and converts the current ambient light intensity into a voltage signal to be stored in the memory capacitor 5, the reflection type photoelectric sensor receiver 2 is used for converting the total light intensity reflected into the elevator safety key 9 into the voltage signal, when a user uses a key (places a hand right in front of the key), the reflection type photoelectric sensor receiver 2 converts the total ambient light intensity (the current ambient light intensity + the reflection light intensity) reflected into the voltage signal to be input into the voltage comparator 4 after passing through the in-phase buffer 3, the microcontroller 1 transmits the signal to the memory voltage comparator 1, the microcontroller 1 detects that the reflection type photoelectric sensor 1 detects the reflection type elevator safety key 9, the reflection type photoelectric sensor is used, the relay is used for automatically, and the relay 7 is used for controlling the relay, and the relay 9, and the relay is used for realizing the automatic control of the elevator safety key, and the relay is used for realizing the automatic control of the relay, and the relay.
The micro controller 1 is directly connected with the reflective photoelectric sensor receiver 2, the reflective photoelectric sensor emitter 6, the voltage comparator 4, the photoelectric coupler 7 and the LED display device 10, the micro controller 1 is a low-power-consumption embedded micro controller LPC2103, the reflective photoelectric sensor emitter 6 is controlled by the micro controller 1, the voltage comparator 4 compares electric signals corresponding to light intensity changes and outputs the electric signals to the micro controller 1, the micro controller 1 processes the signals and then outputs low-level control safety key driving circuits to the photoelectric coupler 7, and the LED display device 10 is used for assisting an administrator in elevator parameter setting.
The four triodes Q are arranged in each safety key control circuit, the four triodes Q1, Q2, Q3 and Q4 are controlled by the microcontroller 1 and control other devices, the triodes Q1, Q2 and Q3 are arranged in the light intensity detection circuit, the triode Q1 is used for controlling the emitter 6 of the reflection type photoelectric sensor to work, the triode Q2 is used for controlling the charging of the memory capacitor 5 and memorizing the light intensity of the environment, the triode Q3 is used for controlling the work of the voltage comparator 4, the triode Q4 is arranged in the safety key drive circuit, and the current output by the photoelectric coupler 7 is amplified and then drives the relay 8 to work. The diode D functions as an overcurrent protection transistor Q4.
The reflective photoelectric sensor receiver 2 and the reflective photoelectric sensor emitter 6 are arranged in the light intensity detection circuit, and the power supply of the reflective photoelectric sensor emitter 6 is controlled by a triode Q1 controlled by the microcontroller 1. When the microcontroller 1 outputs a low level, the reflective photoelectric sensor emitter 6 does not work, the electric signal output by the reflective photoelectric sensor receiver 2 only represents the ambient light intensity and is stored in the memory capacitor 5, after the microcontroller 1 outputs a high level control signal, the power supply of the reflective photoelectric sensor emitter 6 is switched on to emit infrared light, the infrared light is reflected by a hand right in front of the elevator safety key 9 and then is received by the reflective photoelectric sensor receiver 2, and the electric signal corresponding to the total light intensity (the ambient light intensity plus the reflected light intensity) is output to the in-phase buffer 3.
The in-phase buffer 3 is formed by connecting operational amplifiers, and the input of the in-phase buffer is connected with the output end of the receiver 2 of the reflection type photoelectric sensor.
The power supply of the voltage comparator 4 is controlled by a triode Q3 controlled by the microcontroller 1, the in-phase input end of the voltage comparator is connected with the in-phase buffer 3 during working, the voltage corresponding to the total light intensity (the ambient light intensity + the reflected light intensity) is input, the reverse phase input end of the voltage comparator is connected with the memory capacitor 5, the voltage corresponding to the ambient light intensity is input, and the two are compared to output signals to the microcontroller 1 for processing.
The memory capacitor 5 is used for memorizing the voltage quantity corresponding to the current environmental light intensity output by the preceding stage circuit before the safety key is used and is used as a reference voltage, after the safety key is fully charged, the triode Q2 is controlled to be cut off by the microcontroller 1, the memory capacitor 5 outputs the environmental reference voltage to the inverting input end of the voltage comparator 4, the voltage quantity corresponding to the total light intensity (the environmental light intensity and the reflected light intensity) of the non-inverting input end is compared and then is output to the microcontroller 1, and the automatic detection function of the elevator safety key 9 is realized.
And the coil of the relay 8 is connected with the triode Q4 and is driven by the amplified current, the normally open contact of the relay 8 is closed, and the corresponding elevator safety key 9 is automatically pressed.
The elevator safety key 9 is made of transparent hard glass materials, and the two ends of the elevator safety key 9 are connected with the jitter elimination capacitors in parallel.
An intelligent elevator safety key input method for preventing and controlling virus infection comprises the following steps;
the user only needs to place the hand right in front of the elevator safety key 9 without contacting, and the microcontroller 1 controls the corresponding elevator safety key 9 to be automatically pressed down after the short time delay T2; if the user wants to go to a negative floor (such as a second floor), hands are sequentially placed right in front of the safety keys of the '2' and the '2', and the elevator safety key 9 is automatically closed after the short time delay T2; if the user wants to input two-digit floors such as 12 floors, the user puts hands right in front of the keys 1 and 2 in sequence in the same way, the microcontroller 1 delays T2 for a short time to ensure that the user finishes inputting, and then the relay 8 is controlled to automatically press the corresponding elevator safety key 9 to start the elevator;
when a user wants to go up and down a floor outside the car, the microcontroller 1 can control the corresponding elevator safety key 9 to be automatically pressed down only by approaching a hand to the delta or v button;
the acquisition of the environmental light intensity and the comparison of the voltage quantity corresponding to the light intensity reflected by the elevator safety key 9 are controlled by the control signal output by the microcontroller 1, the microcontroller 1 firstly sends a low level control signal and lasts for a time T1, at the moment, the emitter 6 of the reflective photoelectric sensor does not work, the reflective photoelectric sensor receiver 2 only receives the environmental light intensity, outputs a corresponding electric signal, and stores the corresponding electric signal in the memory capacitor 5 as the reference voltage of the environmental light intensity;
the short time delay T1 of the microcontroller 1 can ensure that the environmental light intensity is fully collected and the voltage of the memory capacitor 5 is stable, then a high level is output and a short time delay T2 is output, the emitter 6 of the reflective photoelectric sensor emits infrared light, after the infrared light is reflected by a hand right in front of the elevator safety key 9, the enhanced light (consisting of the environmental light intensity and the reflected light intensity) is received by the reflective photoelectric sensor receiver 2 and output as corresponding voltage quantity, the infrared light passes through the in-phase buffer 3 and is input to the in-phase input end of the voltage comparator 4, the memory capacitor 5 inputs the previously collected environmental reference voltage to the reverse-phase input end of the voltage comparator 4, and the voltage comparator 4 outputs a low level signal to the microcontroller 1;
after receiving a first low level signal sent by the voltage comparator 4, the microcontroller 1 judges whether the user still contacts other digital keys or not through time delay T2, so that whether the user wants to go to a floor with one digit or a floor with two digits is determined, and after the time delay of T2 is finished, if the user goes to the floor with one digit, the relay 8 is driven to automatically press the elevator safety key 9; if the user goes to two floors, the relay 8 automatically presses the corresponding two buttons, and then the function of the high-rise elevator is realized by the least safety buttons.
The microcontroller 1 is connected with an LED display device 10 and is mainly used for an administrator operating system, the administrator approaches an F key 2s in an elevator safety key 9 by hands, the LED display device 10 prompts password authentication, after the password authentication is correct, an elevator parameter setting mode is entered, parameter setting of environment light intensity acquisition time T1, key signal temporary storage time T2, floor upper limit and floor lower limit is sequentially carried out, and the device can be automatically stored after the setting is finished. If an error occurs, the administrator places the hands right in front of the F key again for 2s, resetting and clearing can be carried out, namely, the parameters are set again, and specific numerical values are determined according to actual conditions of installation environments in different areas;
wherein, "environment light intensity acquisition time T1" guarantees that memory capacitor 5 can the fully charged to voltage stable state, and its voltage can accurately show current environment light intensity, and T1 generally is no longer than 1ms, "key signal temporary storage time T2" mainly used user wants to go to the condition of two numbers floor or stratum underground: when the microcontroller 1 detects the first key input by the user, the response is not immediate, but short T2 delay is generated, the purpose is to input a second digit for sufficient time for the user, generally, T2 is set for 2s, the 'upper floor limit' and the 'lower floor limit' form an effective key range, the input exceeding the range is set according to the actual floor number of the building, the ineffective amount is determined, and the key driving circuit cannot be started.
After the elevator is initialized, the manager can reset elevator parameters (including ' ambient light intensity acquisition time T1 ', ' key signal temporary storage time T2 ', ' floor upper limit ' and floor lower limit ') through password authentication, or continue to use the last set value, then the microcontroller 1 sends out a control signal, firstly outputs low level control lasting for T1 time, so that the emitter 6 of the reflective photoelectric sensor does not work, the receiver 2 only receives the ambient light intensity and converts the ambient light intensity into a voltage quantity to be stored in the memory capacitor 5, if no user uses the elevator, the change of the ambient light intensity in the elevator car is continuously updated and memorized, if the user uses the elevator key, the microcontroller 1 sends out a high level control signal, so that the emitter 6 of the reflective photoelectric sensor works, and at the moment, the receiver 2 receives the ambient light intensity and the reflected light intensity, converts the ambient light intensity into a corresponding voltage quantity and sends the corresponding voltage quantity to the voltage comparator 4. The voltage comparator 4 outputs a signal to the microcontroller 1 after comparison, the microcontroller 1 temporarily stores the signal, whether other safety keys are used within the time waiting for T2 (if the user goes to 12 layers, after the number 1 is detected, the number 2 is detected again within the time T2), then the microcontroller 1 sends a signal corresponding to the elevator safety key 9 to be used by the user to the corresponding photoelectric coupler 7, the output is amplified by the triode Q4 and then drives the relay 8, and the function that the elevator safety key 9 can be automatically pressed without being contacted is achieved.
The invention has the beneficial effects that:
1. when the safety button is used by a user, the user does not need to touch the button by hand, and only needs to approach the corresponding button, the safety button can be automatically pressed down, and the function of the corresponding button is realized.
2. The number of the keys is small, the function of a high-rise elevator can be still realized through simple combination, and the intelligent elevator is more intelligent.
3. The non-contact keys can prevent viruses from spreading through the elevator keys.
4. The applicability is strong, and the elevator can be additionally installed in the existing elevator and can also be used in the design of a new elevator.
Drawings
FIG. 1 is a schematic diagram of the inventive hardware system.
Fig. 2 is a schematic view of a security key panel.
Fig. 3 is a flow chart of the invention.
Fig. 4 is a general diagram of the internal control circuit of the safety key.
Fig. 5 is a partially enlarged schematic view of a safety key control circuit in an elevator car.
Fig. 6 is a partially enlarged schematic view of an elevator car external safety key control circuit.
Fig. 7 is an enlarged schematic view of the light intensity detection control circuit of the digital '0' safety key.
Fig. 8 is an enlarged schematic diagram of a digital "0" security key driving control circuit.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the hardware system of the present invention comprises a microcontroller 1, a reflective photoelectric sensor receiver 2, a reflective photoelectric sensor transmitter 6, a triode Q, an in-phase buffer 3, a voltage comparator 4, a photoelectric coupler 7, a diode D, a relay 8, elevator safety keys 9, an led display device 10 and necessary resistance capacitors. The core part microcontroller 1 is a low-power consumption embedded microcontroller LPC2103, has stable control performance, smaller package and extremely low power consumption, and meets the requirements of energy conservation and environmental protection.
Referring to fig. 2, numbers of 0 to 9, minus sign and door opening sign are marked below safety keys in the elevator car "
", door closing symbol"
"and the symbol of the administrator setting key" F "; and each floor outside the elevator car door is provided with a sign delta and a sign v going downstairs. Each key comprises the internal hardware system of fig. 1, and realizes the function of automatic key pressing without contact.
According to the use method of the intelligent elevator safety key for preventing and controlling the virus infection, a user only needs to place a hand right in front of the elevator safety key 9 without contacting, and after the short time delay T2, the microcontroller 1 can control the corresponding elevator safety key 9 to be automatically pressed down; if the user wants to go to a negative floor (such as a second floor), hands are sequentially placed right in front of the safety keys of the '2' and the '2', and the elevator safety key 9 is automatically closed after the short time delay T2; if the user wants to input two-digit floors such as 12 floors, the user puts hands in front of the keys 1 and 2 in sequence in the same way, the microcontroller 1 delays T2 for a short time to ensure that the user input is finished, and then the relay 8 is controlled to automatically press the corresponding elevator safety key 9 to start the elevator.
Referring to fig. 3, the working flow of the present invention is as follows: after the elevator is initialized, the administrator can reset the elevator parameters (including the ambient light intensity acquisition time T1, the key signal temporary storage time T2, the upper floor limit and the lower floor limit) through password authentication, and can also continue to use the previous set values. Then the microcontroller 1 sends out a control signal, firstly outputs low level control lasting for T1 time to enable the emitter 6 of the reflection type photoelectric sensor not to work, the receiver 2 only receives the ambient light intensity and converts the ambient light intensity into voltage quantity to be stored in the memory capacitor 5, if no user uses the elevator, the change of the ambient light intensity in the elevator car is continuously updated and memorized, if the user uses an elevator key, the microcontroller 1 sends out a high level control signal to enable the emitter 6 of the reflection type photoelectric sensor to work, and at the moment, the receiver 2 receives the ambient light intensity and the reflected light intensity, converts the ambient light intensity into corresponding voltage quantity and sends the corresponding voltage quantity to the voltage comparator 4. The voltage comparator 4 outputs a signal to the microcontroller 1 after comparison, the microcontroller 1 temporarily stores the signal, whether other safety keys are needed to be used within the time waiting for T2 (if the user needs to go to 12 layers, after the number 1 is detected, the number 2 is detected again within the time T2), then the microcontroller 1 sends a signal corresponding to the elevator safety key 9 needed to be used by the user to the corresponding photoelectric coupler 7, the output is amplified by the triode Q4 and then drives the relay 8, and the function that the safety elevator safety key 9 can be automatically pressed without contact is achieved.
Referring to fig. 4, a general diagram of an internal control circuit of the safety key comprises a microcontroller 1, a reflective photoelectric sensor receiver 2, a reflective photoelectric sensor emitter 6, a triode Q, an in-phase buffer 3, a voltage comparator 4, a photoelectric coupler 7, a diode D, a relay 8, an elevator safety key 9 and necessary resistance capacitors. Microcontroller 1 exports low level control signal to the light intensity detection circuit earlier, switch on triode Q2, and triode Q1 and Q3 are in the off-state, reflection type photoelectric sensor's transmitter 6 is out of work, the environment light intensity is only received to receiver 2, charge for memory capacitor 5 after turning into the magnitude of voltage through in-phase buffer 3, the magnitude of voltage that will correspond is preserved in memory capacitor 5, this moment because triode Q3 ends, voltage comparator 4 is out of work, avoided transmitting the maloperation signal to microcontroller 1, the circuit is in the light intensity signal acquisition stage. After T1 extremely short time delay (no more than 1 ms), the microcontroller 1 immediately outputs high level control signals to each light intensity detection circuit, the triode Q2 is cut off, Q1 and Q3 are conducted, the emitter 6 of the reflection type photoelectric sensor is powered on to emit infrared light, the infrared light is reflected by a hand right in front of the elevator safety key 9 and then is received by the receiver 2, the light intensity is the sum of the ambient light intensity and the reflected light intensity, and the receiver 2 outputs corresponding electric signals to the in-phase input end of the voltage comparator 4 through the in-phase buffer 3. Because the triode Q2 is in a cut-off state, the memory capacitor (5) keeps the voltage amount corresponding to the previous ambient light intensity and outputs the voltage amount to the inverting input end of the voltage comparator 4. Since the transistor Q3 is in a conducting state, the voltage comparator 4 works normally, and since the voltage level of the non-inverting input terminal is less than that of the inverting input terminal, a low level signal is output to the microcontroller 1. After receiving the first low level signal, the microcontroller 1 starts T2 time delay, judge whether the user continues to be close to other keys (if the user wants to go to a two-digit floor or a negative floor) during this period, after the short time delay is finished, the microcontroller 1 sends a low level control signal to a driving circuit corresponding to the elevator safety key 9, a photoelectric coupler 7 is switched on, a triode Q4 is driven (a diode D plays a role of an overcurrent protection triode), the amplified signal drives a relay (8) again, a normally open contact of the relay is closed, the corresponding elevator safety key 9 is automatically pressed down, the safety key function is realized, the contact with potential viruses is reduced to the maximum extent, and the viruses are prevented from being transmitted through the elevator keys.
Referring to fig. 5, a schematic enlarged partial view of a safety key control circuit in an elevator car comprises various types (0 to 9, minus and plus) in the car "
”、“
"," F ") internal control circuitry for the security key.
Referring to fig. 6, the partial enlarged schematic diagram of the control circuit of the safety keys outside the elevator car comprises internal control circuits of the safety keys 'Δ' and 'v' for opening the door on each floor.
Referring to fig. 7 and 8, the enlarged schematic diagram of the internal control circuit of the digital "0" safety key includes a key light intensity detection circuit fig. 7 and a partial enlarged view of the key driving circuit fig. 8.
An intelligent elevator safety key input device for preventing and controlling virus infection comprises an elevator safety key 9 with good light transmission performance, wherein the elevator safety key 9 is made of light transmission hard glass materials, a control circuit is arranged in the elevator safety key 9 and consists of a microcontroller 1 and a peripheral sub circuit, the peripheral sub circuit comprises a reflection type photoelectric sensor receiver 2, a reflection type photoelectric sensor emitter 6, a triode Q, an in-phase buffer 3, a voltage comparator 4, a photoelectric coupler 7, a diode D, a relay 8, an elevator safety key 9, an LED display device 10 and a necessary resistance capacitor, a light intensity detection circuit (specifically arranged position) memorizes current environment light intensity under the control of the microcontroller 1 and converts the current environment light intensity into a voltage signal to be stored in a memory capacitor 5, the reflection type photoelectric sensor receiver 2 converts the total light intensity reflected into the inside of the elevator safety key 9 into a voltage signal, the voltage signal is input into the voltage comparator 4 after passing through the in-phase buffer 3, the voltage comparator 4 is compared with the memorized voltage and then transmits a signal to the microcontroller 1, after the microcontroller 1 detects a key to be used by a user, the signal to control a safety key driving circuit, a normally open contact is driven by the photoelectric coupler 7 and the triode Q4, the relay is controlled to realize the automatic pressing function of the elevator safety key 9.
The reflective photoelectric sensor comprises a microcontroller 1, a reflective photoelectric sensor receiver 2, a reflective photoelectric sensor emitter 6, a voltage comparator 4, a photoelectric coupler 7 and an LED display device 10, wherein the microcontroller 1 is a low-power-consumption embedded microcontroller LPC2103 with stable performance, the reflective photoelectric sensor emitter 6 is controlled by the microcontroller 1, the voltage comparator 4 compares electric signals corresponding to light intensity changes and outputs the electric signals to the microcontroller 1, the microcontroller 1 processes the signals and then outputs low-level control safety key driving circuits to the photoelectric coupler 7, and the LED display device 10 is used for assisting an administrator in elevator parameter setting.
The four triodes Q are arranged in each safety key control circuit, the four triodes Q1, Q2, Q3 and Q4 are controlled by the microcontroller 1 and control other devices, the Q1, Q2 and Q3 are positioned in the light intensity detection circuit, the Q1 controls the emitter 6 of the reflection type photoelectric sensor to work, the Q2 controls the charging of the memory capacitor 5 and memorizes the light intensity of the environment, the Q3 controls the work of the voltage comparator 4, the Q4 is positioned in the safety key driving circuit, the current output by the photoelectric coupler 7 is amplified and then drives the relay 8 to work, and the diode D plays a role in overcurrent protection of the triode Q4.
The reflective photoelectric sensor receiver 2 and the reflective photoelectric sensor emitter 6 are arranged in a light intensity detection circuit, the power supply of the reflective photoelectric sensor emitter 6 is controlled by a triode Q1 controlled by the microcontroller 1, when the microcontroller 1 outputs a low level, the reflective photoelectric sensor emitter 6 does not work, an electric signal output by the reflective photoelectric sensor receiver 2 only represents the ambient light intensity and is stored in the memory capacitor 5, after the microcontroller 1 outputs a high level control signal, the power supply of the reflective photoelectric sensor emitter 6 is switched on to emit infrared light, the infrared light is reflected by a hand right in front of the safety key 9 of the safety elevator and then received by the reflective photoelectric sensor receiver 2, and an electric signal corresponding to the total light intensity (the ambient light intensity plus the reflected light intensity) is output to the in-phase buffer 3.
The in-phase buffer 3 is formed by connecting operational amplifiers, the input of the in-phase buffer is connected with the output end of the receiver 2 of the reflection type photoelectric sensor, an electric signal corresponding to the light intensity is obtained, on one hand, the influence of a rear-stage circuit on the input signal is isolated, on the other hand, the driving capability is increased, so that the memory capacitor (5) can quickly track the input signal, and the purpose of memorizing the current ambient light intensity is achieved.
The power supply of the voltage comparator 4 is controlled by a triode Q3 controlled by the microcontroller 1, the in-phase input end of the voltage comparator is connected with the in-phase buffer 3 during working, the voltage corresponding to the total light intensity (the ambient light intensity + the reflected light intensity) is input, the reverse phase input end of the voltage comparator is connected with the memory capacitor 5, the voltage corresponding to the ambient light intensity is input, and the two are compared to output signals to the microcontroller 1 for processing.
The memory capacitor 5 is used for memorizing the voltage quantity corresponding to the current environmental light intensity output by the preceding stage circuit before the safety key is used and used as reference voltage, after the safety key is fully charged, the triode Q2 is controlled by the microcontroller 1 to be cut off, the memory capacitor 5 outputs the environmental reference voltage to the inverting input end of the voltage comparator 4, the voltage quantity corresponding to the total light intensity (the environmental light intensity and the reflected light intensity) of the non-inverting input end is compared and then output to the microcontroller 1, and the automatic detection function of the elevator safety key 9 is realized.
The photoelectric coupler 7 is connected in the safety key driving circuit, is controlled by the microcontroller 1, is used as an optical coupler to realize the conversion of an electric-optical-electric signal, increases the function of electric isolation, reduces interference, and outputs to drive the triode Q4 so as to drive the relay 8 to act.
And the coil of the relay 8 is connected with the triode Q4 and is driven by the amplified current, the normally open contact of the relay 8 is closed, and the corresponding elevator safety key 9 is automatically pressed.
The safety key 9 is made of a light-transmitting hard glass material, infrared light inside the key 9 can fully penetrate through the safety key 9, the infrared light is reflected by a hand right in front of the safety key 9 and then penetrates through the safety key 9 again, the infrared light is received by the receiver 2 of the reflection type photoelectric sensor to generate a corresponding electric signal, the two ends of the safety key 9 are connected in parallel with an anti-shake capacitor, interference is reduced, and stability of the safety key is further enhanced.
The LED display device 10 is connected with the microcontroller 1 and is mainly used for an administrator to operate a system, the administrator approaches an 'F' key 2s in the safety key 9 with hands, the LED display device 10 prompts password authentication, after the password authentication is correct, an elevator parameter setting mode is entered, parameter setting of 'ambient light intensity acquisition time T1', 'key signal temporary storage time T2', 'floor upper limit' and 'floor lower limit' is sequentially carried out, and the device can be automatically stored after the setting is completed. If an error occurs, the administrator can reset and clear the key by placing the hand right in front of the 'F' key for 2s again, namely, the parameters are set again, and the specific values are determined according to the actual conditions of installation environments in different regions.
The "ambient light intensity acquisition time T1" ensures that the memory capacitor 5 can be fully charged to a voltage stable state, the voltage of the memory capacitor can accurately represent the current ambient light intensity, and T1 generally does not exceed 1ms. "key signal temporary storage time T2" is mainly used in a case where a user wants to go to a two-digit floor or an underground floor: when the microcontroller 1 detects the first key input by the user, the response is not immediate, but short T2 delay is generated, the purpose is to input a second digit for sufficient time for the user, generally, T2 is set for 2s, the 'upper floor limit' and the 'lower floor limit' form an effective key range, the input exceeding the range is set according to the actual floor number of the building, the ineffective amount is determined, and the key driving circuit cannot be started.
Claims (8)
1. The intelligent elevator safety key input device for preventing and controlling virus infection is characterized by comprising a control circuit, wherein the control circuit is composed of a microcontroller (1) and a peripheral sub-circuit, and the peripheral sub-circuit comprises a reflection type photoelectric sensor receiver (2), a reflection type photoelectric sensor emitter (6), a triode Q, an in-phase buffer (3), a voltage comparator (4), a photoelectric coupler (7), a diode D, a relay (8), an elevator safety key (9), an LED display device (10) and a necessary resistance capacitor;
the reflective photoelectric sensor receiver (2) and the reflective photoelectric sensor emitter (6) are arranged in the light intensity detection circuit,
light intensity detection circuit remembers current environment light intensity and converts voltage signal storage under microcontroller's (1) control into, reflection type photoelectric sensor receiver (2) are arranged in getting into elevator safety button (9) inside total light intensity conversion voltage signal with the reflection, in inphase buffer (3) back input voltage comparator (4), with memory voltage comparison back transmission signal to microcontroller (1), after microcontroller (1) detected the button that the user will use, output signal control safety button drive circuit, through optoelectronic coupler (7), triode Q4 drives the back, control relay (8) normally open contact is closed, be used for realizing that elevator safety button (9) are automatic to be pressed.
2. The intelligent elevator safety key input device for preventing and controlling virus infection according to claim 1, wherein the microcontroller (1) is directly connected with the reflective photoelectric sensor receiver (2), the reflective photoelectric sensor transmitter (6), the voltage comparator (4), the photoelectric coupler (7) and the LED display device (10), the microcontroller (1) is a low power consumption embedded microcontroller LPC2103, the reflective photoelectric sensor transmitter (6) is controlled by the microcontroller (1), the voltage comparator (4) compares electric signals corresponding to light intensity changes and outputs the electric signals to the microcontroller (1), the microcontroller (1) processes the signals and outputs low level control safety key driving circuits to the photoelectric coupler (7), and the LED display device (10) is used for assisting an administrator in elevator parameter setting.
3. The intelligent elevator safety key input device for preventing and controlling virus infection according to claim 1, wherein four triodes Q are provided in each safety key control circuit, four triodes Q1, Q2, Q3, Q4 are controlled by the microcontroller (1) and control other devices, Q1, Q2, Q3 are in the light intensity detection circuit, Q1 is used for controlling the operation of the emitter (6) of the reflective photoelectric sensor, Q2 is used for controlling the charging of the memory capacitor (5), Q3 is used for controlling the operation of the voltage comparator (4), Q4 is in the safety key drive circuit, and the current output by the photoelectric coupler (7) is amplified and then drives the relay (8) to operate.
4. An intelligent elevator safety key input device for preventing and controlling virus infection according to claim 1, characterized in that the power supply of the reflective photoelectric sensor emitter (6) is controlled by a triode Q1 controlled by the microcontroller (1).
5. An intelligent elevator safety key input device for preventing and controlling virus infection according to claim 1, characterized in that the in-phase buffer (3) is formed by connecting operational amplifiers, and the input of the in-phase buffer is connected with the output end of the receiver (2) of the reflection type photoelectric sensor.
6. The intelligent elevator safety key input device for preventing and controlling virus infection according to claim 1, characterized in that the elevator safety key (9) is made of transparent hard glass material, and the two ends of the elevator safety key (9) are connected in parallel with an anti-jitter capacitor.
7. An intelligent elevator safety key input method for preventing and controlling virus infection is characterized in that;
a user only needs to place a hand right in front of the elevator safety key (9) without contacting, and the microcontroller (1) can control the corresponding elevator safety key (9) to be automatically pressed down after a short time delay T2;
when a user wants to go up and down floors outside the car, the microcontroller (1) can control the corresponding elevator safety key (9) to be automatically pressed down only by enabling the hand to be close to the delta or v button;
the acquisition of the environmental light intensity and the comparison of the voltage quantity corresponding to the reflected light intensity of the elevator safety key (9) are controlled by a control signal output by the microcontroller (1);
comprises the following steps;
the microcontroller (1) firstly sends out a low-level control signal and lasts for a time T1, at the moment, a transmitter (6) of the reflection type photoelectric sensor does not work, a receiver (2) of the reflection type photoelectric sensor only receives the ambient light intensity, outputs a corresponding electric signal and stores the electric signal in a memory capacitor (5) as the ambient light intensity reference voltage;
the short time delay T1 of the microcontroller (1) can ensure that the ambient light intensity is fully collected and the voltage of the memory capacitor (5) is stable, then a high level is output and the short time delay T2 is output, the emitter (6) of the reflective photoelectric sensor emits infrared light, after the infrared light is reflected by a hand right in front of the elevator safety key (9), the enhanced light is received by the reflective photoelectric sensor receiver (2) and is output as a corresponding voltage quantity, the infrared light passes through the in-phase buffer (3) and is input to the in-phase input end of the voltage comparator (4), the memory capacitor (5) inputs the previously collected ambient reference voltage to the reverse phase input end of the voltage comparator (4), and the voltage comparator (4) outputs a low level signal to the microcontroller (1); the microcontroller (1) judges whether the user still contacts other digital keys or not through the delay T2, if the user goes to a one-digit floor, the user only needs to put a hand right in front of the elevator safety key (9) without contacting, and after the delay T2 is finished, the relay (8) is driven to automatically press the elevator safety key (9);
if the user goes to two floors, the user only needs to put hands right ahead of the elevator safety keys (9) without contacting, the hands are sequentially put ahead of the corresponding keys in the time delay T2, and after the time delay T2 is finished, the relay (8) automatically presses the corresponding two keys, so that the function of a high-rise elevator is realized by the least safety keys.
8. The intelligent elevator safety key input method for preventing and controlling virus infection according to claim 7 is characterized in that the microcontroller (1) is connected with an LED display device (10) and is mainly used for an administrator operating system, the administrator approaches an 'F' key 2s in an elevator safety key (9) with a hand, the LED display device (10) prompts password authentication, if the password authentication is correct, the elevator parameter setting mode is entered, the parameter setting of 'ambient light intensity acquisition time T1', 'key signal temporary storage time T2', 'floor upper limit' and 'floor lower limit' is sequentially carried out, the device can automatically store after the setting is finished, if an error occurs, the administrator places the hand right in front of the 'F' key for 2s again to reset, the setting of the parameters is carried out again, and specific values are determined according to actual conditions of installation environments in different regions.
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| JP7488749B2 (en) * | 2020-10-29 | 2024-05-22 | 株式会社日立製作所 | Elevator system and elevator non-contact button operation detection method |
| CN112367068A (en) * | 2020-11-12 | 2021-02-12 | 康佳集团股份有限公司 | Elevator button circuit and elevator |
| CN112357704A (en) * | 2020-11-26 | 2021-02-12 | 佛山市高明区高级技工学校 | Non-contact elevator button device |
| CN113666208B (en) * | 2021-09-01 | 2023-03-21 | 厦门熵基科技有限公司 | Elevator control system and control method thereof |
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| JP2002053277A (en) * | 2000-08-09 | 2002-02-19 | Mitsubishi Electric Building Techno Service Co Ltd | Car operating panel for elevator |
| JP2005263378A (en) * | 2004-03-17 | 2005-09-29 | Toshiba Elevator Co Ltd | Register button of elevator |
| KR100606198B1 (en) * | 2005-03-21 | 2006-08-02 | 새한엘리베이터 주식회사 | Apparatus of Touch Screen Elevator |
| KR200442312Y1 (en) * | 2007-01-19 | 2008-10-29 | 우진전장 주식회사 | Elevate button with a photo-diode switch |
| JP4986134B2 (en) * | 2007-03-05 | 2012-07-25 | 横河電機株式会社 | Infrared touch switch |
| KR101352756B1 (en) * | 2009-08-27 | 2014-01-16 | 미쓰비시덴키 가부시키가이샤 | Elevator system and method for controlling the same |
| JP2013124166A (en) * | 2011-12-15 | 2013-06-24 | Mitsubishi Electric Building Techno Service Co Ltd | Elevator |
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| CN104787631B (en) * | 2014-01-21 | 2017-01-11 | 山东建筑大学 | Elevator and video intercom integrated control system and working method thereof |
| CN110342360A (en) * | 2018-04-04 | 2019-10-18 | 上海三菱电梯有限公司 | Elevator calling mechanism |
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