CN112919273A - Non-contact button of calling system, non-contact calling system and elevator equipment - Google Patents
Non-contact button of calling system, non-contact calling system and elevator equipment Download PDFInfo
- Publication number
- CN112919273A CN112919273A CN202110275701.6A CN202110275701A CN112919273A CN 112919273 A CN112919273 A CN 112919273A CN 202110275701 A CN202110275701 A CN 202110275701A CN 112919273 A CN112919273 A CN 112919273A
- Authority
- CN
- China
- Prior art keywords
- capacitor
- resistor
- call
- contact
- microprocessor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000008859 change Effects 0.000 claims abstract description 19
- 239000003990 capacitor Substances 0.000 claims description 99
- 238000002955 isolation Methods 0.000 claims description 20
- 238000009434 installation Methods 0.000 claims description 3
- 241000700605 Viruses Species 0.000 abstract description 7
- 241000894006 Bacteria Species 0.000 abstract description 5
- 230000010355 oscillation Effects 0.000 description 19
- 238000010586 diagram Methods 0.000 description 13
- 230000005693 optoelectronics Effects 0.000 description 9
- 238000013459 approach Methods 0.000 description 6
- 230000006698 induction Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000005672 electromagnetic field Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005674 electromagnetic induction Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000005180 public health Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- B66B1/468—Call registering systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B2201/00—Aspects of control systems of elevators
- B66B2201/40—Details of the change of control mode
- B66B2201/46—Switches or switchgear
- B66B2201/4607—Call registering systems
- B66B2201/4638—Wherein the call is registered without making physical contact with the elevator system
Landscapes
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Elevator Control (AREA)
Abstract
The embodiment of the invention discloses a non-contact button of a calling system, the non-contact calling system and elevator equipment. The non-contact button comprises an oscillating circuit and a microprocessor, wherein the oscillating circuit comprises an inductance coil and is used for outputting a calling signal, the frequency of the calling signal changes along with the change of a magnetic field detected by the inductance coil, and the microprocessor is electrically connected with the oscillating circuit and is used for generating a calling instruction according to the frequency change of the calling signal and outputting the calling instruction. The technical scheme provided by the embodiment of the invention realizes non-contact information identification and calling of the elevator, avoids contact between a human body and an elevator button, prolongs the service life of elevator equipment, and effectively prevents propagation of harmful bacteria and viruses.
Description
Technical Field
The embodiment of the invention relates to the technical field of elevator control, in particular to a non-contact button of a calling system, a non-contact calling system and elevator equipment.
Background
The elevator equipment can not leave the information input device, and the mechanical buttons are generally adopted as the information input modes at present, such as a control panel and an outbound panel.
The prior art elevator calling systems all require an elevator user to contact with elevator equipment, for example, when an elevator is called, the user needs to touch a case in a calling box or a car outside a hall with fingers, and only a close contact type operating device can realize operation, when a large number of people exist in the car, the user is difficult to directly touch keys of the elevator calling device, and the risk of missing a target landing or car exists. In addition, the mechanical micro switch is used in the elevator with the mechanical button as an elevator information input mode, the service life is limited by times, the elevator is easily damaged by strong external force, the mechanical button can be actuated only by contacting and applying pressure, and therefore harmful bacteria and viruses can be spread, and the physical health and public health safety of users are affected.
Disclosure of Invention
The embodiment of the invention provides a non-contact button of a calling system, the non-contact calling system and elevator equipment, which are used for realizing non-contact induction of an elevator, realizing floor selection or calling under the non-contact condition, effectively avoiding contact between a human body and the elevator equipment, prolonging the service life of the elevator equipment and effectively preventing the propagation of harmful bacteria and viruses.
In a first aspect, an embodiment of the present invention provides a non-contact button of a call system, including:
the oscillating circuit comprises an inductance coil and is used for outputting a call signal, and the frequency of the call signal changes along with the change of a magnetic field detected by the inductance coil;
and the microprocessor is electrically connected with the oscillating circuit and used for generating and outputting a call instruction according to the frequency change of the call signal.
Optionally, the oscillating circuit is a colpitts oscillating circuit.
Optionally, the oscillation circuit includes a first capacitor, a first resistor, a second capacitor, a first triode, a third resistor, a fourth resistor, a third capacitor, a fourth capacitor, a fifth capacitor, an inductor, a sixth capacitor, a seventh capacitor, a fifth resistor, a sixth resistor, a second triode, a seventh resistor, an eighth capacitor, and an eighth resistor;
the first end of the first capacitor is grounded, the second end of the first capacitor is respectively connected with the first end of the first resistor, the first end of the third resistor, the first end of the fifth resistor and the first end of the seventh resistor, and is commonly connected to an external power supply, the second end of the first resistor is respectively connected with the first end of the second resistor, the first end of the second capacitor and the base b of the first triode, the second end of the second resistor is respectively connected with the second end of the second capacitor, the second end of the fourth resistor, the second end of the fourth capacitor, the second end of the inductor, the sixth capacitor, the sixth resistor, the emitter of the second triode and the second end of the eighth resistor, and is commonly grounded, the second end of the third resistor is respectively connected with the collector c, the collector b, and the base b of the first triode, The first end of the third capacitor is connected with the first end of the fifth capacitor, the first end of the fourth resistor is connected with the emitter of the first triode, the second end of the third capacitor and the first end of the fourth capacitor respectively, the second end of the fifth capacitor is connected with the first end of the inductor, the first end of the sixth capacitor and the first end of the seventh resistor respectively, the second end of the seventh capacitor is connected with the second end of the fifth resistor, the first end of the sixth resistor and the base b of the second triode respectively, the second end of the seventh resistor is connected with the collector c of the second triode and the first end of the eighth capacitor respectively, and the second end of the eighth capacitor is connected with the first end of the eighth capacitor and the input end IN of the microprocessor respectively. Optionally, the oscillation circuit further comprises a first light emitting diode and a second light emitting diode;
the cathode of the first light emitting diode is connected with an external power supply, the anode of the first light emitting diode and the cathode of the second light emitting diode are commonly connected to the second end of the fifth capacitor, the first end of the inductor, the first end of the sixth capacitor and the first end of the seventh capacitor, and the anode of the second light emitting diode is grounded.
Optionally, the non-contact button of the call system further comprises a photoelectric isolation circuit, and the photoelectric isolation circuit is electrically connected with the output end of the microprocessor and is used for isolating and outputting the call instruction.
Optionally, the optoelectronic isolation circuit includes a ninth resistor, a photocoupler, a fuse, and a ninth capacitor;
the first end of the ninth resistor is connected with the output end of the microprocessor, the second end of the ninth resistor is electrically connected with the first input end of the photoelectric coupler, the second input end of the photoelectric coupler is grounded, the first end of the fuse is electrically connected with the first output end of the photoelectric coupler, the second end of the fuse is connected with the first end of the ninth capacitor, and the ninth capacitor is connected between the first output end and the second output end of the photoelectric coupler.
Optionally, the microprocessor is configured to respond to generate a call instruction when the frequency of the call signal is outside a preset frequency threshold range.
In a second aspect, an embodiment of the present invention further provides a non-contact call system, including the non-contact button described in any one of the first aspects, and further including a call control system;
the call control system is electrically connected with the non-contact buttons and is used for receiving call instructions of the non-contact buttons to control the running of the elevator.
Optionally, the contactless call system further comprises a LOP and/or a COP, respectively, for displaying the call instruction.
In a third aspect, an embodiment of the present invention further provides an elevator apparatus, including the non-contact call system described in the second aspect.
The embodiment of the invention provides a non-contact button of a calling system, which comprises: the oscillating circuit comprises an inductance coil and is used for outputting a calling signal, the frequency of the calling signal changes along with the change of the magnetic field detected by the inductance coil, and the microprocessor is electrically connected with the oscillating circuit and is used for generating a calling instruction according to the frequency change of the calling signal and outputting the calling instruction. When a finger is close to or far away from the inductance coil, the generated changed inductance value enables the oscillation circuit to output calling signals with different frequencies, and the microprocessor identifies, calculates and processes the inputted calling signals with different frequencies according to the internal arithmetic processing unit to generate calling instructions, so that the contact between a human body and an elevator button is avoided, the propagation of bacteria and viruses is prevented, the propagation path of viruses is reduced, in addition, the non-contact calling is realized, a mechanical button is replaced, the operation of a pressure button is reduced, the button is prevented from being damaged by strong external force or long-time work, and the service life of the button is prolonged.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
FIG. 1 is a schematic structural diagram of a non-contact button of a call system provided by an embodiment of the invention;
FIG. 2 is a detailed schematic diagram of a microprocessor in a non-contact button of a call system according to an embodiment of the invention;
FIG. 3 is a detailed schematic diagram of an oscillating circuit in a non-contact button of a call system according to an embodiment of the invention;
FIG. 4 is a detailed schematic diagram of the optoelectronic isolation in the non-contact button of a call system provided by an embodiment of the invention;
FIG. 5 is a schematic structural diagram of a non-contact call system provided by an embodiment of the invention;
fig. 6 is a schematic structural diagram of an elevator apparatus according to an embodiment of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description will be made on the specific implementation modes, structures, features and effects of the non-contact button of the call system, the non-contact call system and the elevator device according to the present invention with reference to the accompanying drawings and preferred embodiments.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other embodiments that depart from the specific details disclosed herein, and it will be recognized by those skilled in the art that the present invention may be practiced without these specific details.
Fig. 1 is a schematic structural diagram of a non-contact button of a call system according to an embodiment of the present invention. As shown in fig. 1, the non-contact button 100 includes: the oscillating circuit 110 comprises an induction coil 111, the oscillating circuit 110 is used for outputting a call signal, the frequency of the call signal changes along with the change of the magnetic field detected by the induction coil 111, and the microprocessor 120 is electrically connected with the oscillating circuit 110 and is used for generating and outputting a call command according to the frequency change of the call signal.
The inductor 111 works by using the principle of electromagnetic induction, and the inductance is a parameter describing the coil. For example, in the present embodiment, the finger is close to or far from the inductor coil, and the inductance thereof is different. The definition of the inductance depends on the electromagnetic induction principle, and the ratio of the induced electromotive force to the miscellaneous books of the inductance coil is the inductance, so that the induced electromotive force changes when a finger approaches. Therefore, the inductance coil is arranged to judge whether the finger approaches the electromagnetic induction affecting the inductance coil according to the change of the inductance value.
Specifically, when the diameter of the inductance coil 111 is designed, the diameter of the inductance coil 111 is made to be close to the thickness of a finger, and since the finger exhibits diamagnetism to an electromagnetic field, when a finger approaches the inductance coil 111, the electromagnetic field generated by the inductance coil 111 after being energized changes, so that the inductance of the inductance coil 111 increases, and similarly, when the finger is far away from the inductance coil 111, the inductance of the inductance coil 111 decreases, so that the approach or the distance of the finger can be judged by detecting the change of the inductance coil 111. Since the inductor 111 is located in the oscillating circuit 110, when the finger is close to or far from the inductor 111, the generated varying inductance causes the oscillating circuit 110 to output a signal of a different frequency, i.e., an output call signal. The change of the inductance coil 111 can be further judged by detecting the change of the frequency of the call signal output by the oscillating circuit 110, so that the approach or the distance of fingers can be known through the change of the frequency, the non-contact information identification and calling of the elevator are realized, and the contact between a human body and the elevator and a button is avoided.
In addition, fig. 2 is a specific schematic diagram of a microprocessor in a non-contact button of a call system according to an embodiment of the invention. As shown IN fig. 2, the oscillating circuit 110 is connected to the input terminal IN of the microprocessor 120, so that the frequency change of the call signal is directly transmitted to the microprocessor 120, and the microprocessor 120 recognizes, calculates and processes the input call signal with different frequencies according to its internal operation processing unit to generate a call command, and outputs the call command through the output terminal OUT of the microprocessor 120.
In this embodiment, the microprocessor 120 may selectively use an HC32F003 chip, which is a chip with high integration, high interference resistance, and high reliability, and is commonly used in industries such as elevators and small home appliances.
It should be noted that the specific processes of identifying, calculating and processing the incoming call signal within the microprocessor 120 are well known to those skilled in the art and will not be described herein.
It should be noted that the debugging circuit 121 connected to the microprocessor 120 is used for debugging the microprocessor before identifying, computing and processing the call signals, so as to ensure the accuracy of the data, and the specific debugging principle is also well known to those skilled in the art and will not be described herein.
The non-contact button of the call system provided by the embodiment comprises: the oscillating circuit comprises an inductance coil and is used for outputting a calling signal, the frequency of the calling signal changes along with the change of the magnetic field detected by the inductance coil, and the microprocessor is electrically connected with the oscillating circuit and is used for generating a calling instruction according to the frequency change of the calling signal and outputting the calling instruction. When a finger is close to or far away from the inductance coil, the generated changed inductance value enables the oscillation circuit to output calling signals with different frequencies, and the microprocessor identifies, calculates and processes the inputted calling signals with different frequencies according to the internal arithmetic processing unit to generate calling instructions, so that the contact between a human body and an elevator button is avoided, the propagation of bacteria and viruses is prevented, the propagation path of viruses is reduced, in addition, the non-contact calling is realized, a mechanical button is replaced, the operation of a pressure button is reduced, the button is prevented from being damaged by strong external force or long-time work, and the service life of the button is prolonged. Optionally, the oscillating circuit is a colpitts oscillating circuit.
The colpitts oscillation circuit is mainly used for the resonance frequency test or the oscillation frequency test of the resonance circuit.
As described in the above embodiments, the oscillation circuit is connected to the input end of the microprocessor, and directly transmits the frequency change of the call signal to the microprocessor, and the microprocessor recognizes, calculates and processes the input call signals with different frequencies according to the internal calculation processing unit to generate a call command, and outputs the call command through the output end of the microprocessor. Thus, in this embodiment, the colpitts oscillator circuit provides a source of excitation signals for subsequent call instructions.
The specific circuit principle of the colpitts oscillation circuit is explained as follows:
optionally, fig. 3 is a specific schematic diagram of an oscillating circuit in a non-contact button of a call system according to an embodiment of the present invention. As shown in fig. 3, the oscillation circuit includes a first capacitor C1, a first resistor R1, a second resistor R2, a second capacitor C2, a first transistor Q1, a third resistor R3, a fourth resistor R4, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, an inductor L, a sixth capacitor C5, a seventh capacitor C5, a fifth resistor R5, a sixth resistor R5, a second transistor Q5, a seventh resistor R5, an eighth capacitor C5, and an eighth resistor R5, wherein a first end of the first capacitor C5 is grounded, a second end of the first capacitor C5 is respectively connected to a first end of the first resistor R5, a first end of the third resistor R5, a first end of the fifth resistor R5, a first end of the seventh resistor R5, a first end of the second resistor R5, a second end of the second resistor R5, a first end of the second resistor R5, a base of the second capacitor C5, a base of the second resistor R5, and a second end of the second resistor R5 are respectively connected to an external power supply, and a base of the second terminal of the first end of the, A second end of the fourth resistor R4, a second end of the fourth capacitor C4, a second end of the inductor L, a sixth capacitor C6, a sixth resistor R6, an emitter e of the second transistor Q2, and a second end of the eighth resistor R8 are commonly connected to ground, a second end of the third resistor R3 is respectively connected to a collector C of the first transistor Q1, a first end of the third capacitor C3, and a first end of the fifth capacitor C5, a first end of the fourth resistor R4 is respectively connected to an emitter e of the first transistor Q1, a second end of the third capacitor C3, and a first end of the fourth capacitor C4, a second end of the fifth capacitor C5 is respectively connected to a first end of the inductor L, a first end of the sixth capacitor C6, and a first end of the seventh resistor C7, a second end of the seventh capacitor C7 is respectively connected to a second end of the fifth resistor R5, a first end of the sixth resistor R639, a second end of the second resistor R6862, a second end of the inductor L, a second end of the second resistor R8, a collector C8653, and a second end of the second resistor R8653 are respectively connected to a collector C828653 of The second terminal of the eighth capacitor C8 is connected to the first terminal of the eighth capacitor R8 and the input terminal IN of the microprocessor 120.
In the circuit diagram of fig. 3, the first transistor Q1 and the second transistor Q2 are equivalent to two amplifiers in the circuit, the third capacitor C3, the fourth capacitor C4 and the inductor L form a resonant circuit as a load of the amplifier of the first transistor Q1, and the third capacitor C3 and the fourth capacitor C4 are used as coupling capacitors.
Specifically, the oscillating circuit is connected with an external power supply to generate step voltage, so that the circuit generates disturbance and oscillation is easier to start, at the moment, the emitter e of the first triode Q1 inputs the step voltage into the resonant circuit, the input end of the amplifier, namely feedback, at the moment, the direct-current voltage source does not pass through the resonant circuit any more, but the former feedback is input into the resonant circuit again through the amplifier, at the moment, because the signal is amplified by the voltage of the filter last time, the frequency is not changed, the signal is amplified by the resonant circuit again, and the oscillating voltage is formed in a circulating mode infinitely. The resonant frequency of the oscillating circuit is determined by the inductance L and the third capacitor C3 and the fourth capacitor C4 which are connected in series, the inductance coil is positioned in the oscillating circuit, because the finger presents diamagnetism to the electromagnetic field, when the finger is close to the inductance coil, the electromagnetic field generated by the electrified inductance coil can be changed, so that the inductance value of the inductance coil is increased, when the finger is far away from the inductance coil, the inductance value of the inductance coil is reduced, the generated changed inductance value makes the output frequency of the oscillating circuit different, and the oscillating circuit transmits the output frequency to the microprocessor as different call signals for signal identification and processing.
It should be noted that, the feedback coefficient in the oscillation circuit generally takes a value of 0.1 to 0.5, too small is not easy to start oscillation, too large is easy to reduce the amplification factor of the amplifier in the oscillation circuit and the load value of the resonance circuit, so that the oscillation waveform is easy to generate distortion, and the stability of the output frequency of the oscillation circuit is correspondingly reduced.
It should be noted that, for a specific oscillation circuit, the increase of the amplitude mainly depends on the collector quiescent current of the transistor, and if the value is set too large, the first transistor is easily saturated to cause distortion of the oscillation waveform, even the oscillation circuit stops oscillating, and the value range is generally 1mA to 4 mA.
Optionally, with continued reference to fig. 3, the oscillation circuit further includes a first light emitting diode VD1 and a second light emitting diode VD2, a cathode of the first light emitting diode VD1 is connected to an external power source, an anode of the first light emitting diode VD1 and a cathode of the second light emitting diode VD2 are commonly connected to the second end of the fifth capacitor C5, the first end of the inductor L, the first end of the sixth capacitor C6, and the first end of the seventh capacitor C7, and an anode of the second light emitting diode VD2 is grounded.
The first light emitting diode VD1 and the second light emitting diode VD2 are used for standby or operation indication, when the first light emitting diode VD1 is used for standby indication, the second light emitting diode VD2 is used for operation indication, and when the first light emitting diode VD1 is used for operation indication, the second light emitting diode VD2 is used for standby indication.
Specifically, referring to fig. 3, the first light emitting diode VD1 is connected to an external power supply of 5V, the first light emitting diode VD1 performs a standby indication, and the anode of the first light emitting diode VD1 and the cathode of the second light emitting diode VD2 are commonly connected to the second end of the fifth capacitor C5, the first end of the inductor L, the first end of the sixth capacitor C6, and the first end of the seventh capacitor C7, when a finger approaches the inductor, the oscillating circuit generates a step voltage, and based on the above embodiment, the oscillating circuit generates call signals of different frequencies, and at this time, the second light emitting diode VD2 performs an operation indication. Since the anode of the first light emitting diode VD1 and the cathode of the second light emitting diode VD2 are commonly connected to one end of the inductor L, referring to fig. 3, the voltage at the node a directly affects the operating states of the first light emitting diode VD1 and the second light emitting diode VD 1.
For example, when the voltage at the node a is between 0 and 5V, since the cathode of the first light emitting diode VD1 is connected to an external power source and the anode of the second light emitting diode VD2 is grounded, no voltage difference exists between the first light emitting diode VD1 and the second light emitting diode VD2, no current flows, and thus neither the first light emitting diode VD1 nor the second light emitting diode VD2 emits light. When the voltage at the node a is greater than 5V, the voltage at the anode of the first light emitting diode VD1 is greater than the voltage at the cathode, and a current flows, so that the first light emitting diode VD1 emits light to indicate the operation. Similarly, when the voltage at the node a is less than 0V, the second light emitting diode VD2 emits light to perform an operation instruction.
Optionally, with continued reference to fig. 1 and 2, the contactless button further comprises a photo-isolation circuit 130, the photo-isolation circuit 130 being electrically connected to the output OUT of the microprocessor 120 for isolating the outgoing call command.
The principle of the optoelectronic isolation circuit 130 is to combine the light emitting device and the light receiving device, and to complete the isolation function by the electro-optic-electrical conversion and using the optical link, so that the input and the output are completely isolated electrically, the output signal has no influence on the input end, the anti-interference capability is strong, the operation is stable, the contact is not made, and the service life is long.
The following explains the specific operation principle of the optoelectronic isolation circuit:
optionally, fig. 4 is a specific schematic diagram of photoelectric isolation in a non-contact button of a call system according to an embodiment of the present invention. As shown in fig. 4, the optoelectronic isolation circuit includes a ninth resistor R9, a photocoupler U1, a fuse F1 and a ninth capacitor C9, a first end of the ninth resistor R9 is connected to the output terminal OUT of the microprocessor 120, a second end of the ninth resistor R9 is electrically connected to the first input terminal of the photocoupler U1, a second input terminal of the photocoupler U1 is grounded, a first end of the fuse F1 is electrically connected to the first output terminal of the photocoupler U1, a second end of the fuse F1 is connected to the first end of the ninth capacitor C9, and the ninth capacitor C9 is connected between the first output terminal and the second output terminal of the photocoupler U1.
The photoelectric coupler U1 integrates a light-emitting device and a photosensitive receiving device, wherein the light-emitting device is a light-emitting diode, and the photosensitive receiving device is a photosensitive transistor. When the photoelectric coupler U1 receives the call instruction signal transmitted from the output terminal OUT of the microprocessor 120, the call instruction signal is an input signal of the photoelectric coupler U1, and the signal output by the photosensitive receiver is an output signal of the photoelectric coupler. When an input signal loads the input end of the photoelectric coupler U1, the light-emitting device emits light, and the photosensitive receiving device generates photocurrent when being irradiated by light, so that the output end generates a corresponding electric signal, and the photoelectric transmission and conversion are realized. Subsequently, when the output terminal generates a corresponding electric signal, the control SW1 and SW2 buttons are closed so that a call command is displayed on a control panel connected to the contactless buttons.
From this, it can be understood that unidirectional transmission of an electric signal is realized by using light as a medium, an output signal has no influence on an input terminal, and the input and output of the photocoupler U1 are completely electrically insulated.
It should be noted that, since the photocoupler U1 is actually an "automatic switch" which uses a small current to control a large current, it plays a role in automatic adjustment and switching in the collection of the optoelectronic isolation circuit. Set up a fuse in optoelectronic isolation circuit, can guarantee optoelectronic isolation circuit safe operation, when the too big electric current in the twinkling of an eye appears in the circuit, the fuse will automatic fusing and cut off current, plays the effect of protection circuit safe operation to can effectively avoid because of the influence that circuit fault caused the outside button.
In addition, the ninth resistor R9 and the ninth capacitor C9 function as a protection loop in the optoelectronic isolation circuit.
Optionally, the microprocessor is adapted to respond to generating a call instruction when the frequency of the call signal is outside a preset frequency threshold range.
The preset frequency threshold is a preset value set by a designer according to the corresponding relationship among the output frequency of the oscillating circuit, the inductance of the inductance coil and the induction distance from the finger to the inductance coil. It will be appreciated that the frequency threshold is also a distance threshold, and that when the sensing distance from the finger to the induction coil is within a set distance threshold, the microprocessor generates a corresponding call command.
With this setting frequency threshold value scope, can make the finger accurately respond to and call the instruction in the sensing distance scope, avoid calling the maloperation of calling the call, and microprocessor will call the call instruction and transmit to photoelectric isolation circuit after through microprocessor's output, utilize photoelectric isolation circuit to carry out the optics isolation to output signal, avoided the influence that external disturbance signal led to the fact the button.
It should be noted that the sensing distance from the finger to the inductance coil can be calculated by a software program, and is not described in detail in this embodiment.
Fig. 5 is a schematic structural diagram of a contactless call system according to an embodiment of the present invention. As shown in fig. 5, the call system includes the non-contact buttons 100 provided in any of the embodiments described above, and also includes a call control system 140. The call control system 140 is electrically connected to the plurality of non-contact buttons 100 for receiving call commands from the plurality of non-contact buttons 100 to control elevator operation.
Specifically, on the basis of the above embodiment, after a plurality of non-contact buttons 100 output a call instruction, a call control system 140 is used to obtain the call instruction, so that a user can obtain call instruction information more quickly and accurately, and the use feeling of the user is improved.
Optionally, with continued reference to fig. 5, the contactless call system further comprises a LOP and/or COP141, the LOP and/or COP141 respectively being used for displaying call instructions.
The LOP and/or COP141 is an elevator control panel on which a user can not only obtain information about a staircase and information about a call instruction, but also operate the information, and is an intermediary through which the user establishes contact with an elevator.
It should be noted that the LOP and/or COP141 may be a liquid crystal display, and in other embodiments, the disclosure is not limited thereto.
Fig. 6 is a schematic structural diagram of an elevator apparatus according to an embodiment of the present invention. As shown in fig. 6, the elevator installation 150 includes the non-contact call system 140 provided by any of the embodiments described above.
Since the elevator installation 150 provided by this embodiment includes any of the contactless call systems 140 provided by embodiments of the present invention, which have the same or corresponding benefits as the contactless call systems 140, no further description is provided here.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A non-contact button for a call system, comprising:
the oscillating circuit comprises an inductance coil and is used for outputting a call signal, and the frequency of the call signal changes along with the change of a magnetic field detected by the inductance coil;
and the microprocessor is electrically connected with the oscillating circuit and used for generating and outputting a call instruction according to the frequency change of the call signal.
2. Call system's contactless button according to claim 1, characterized in that the oscillating circuit is a Copytz oscillating circuit.
3. Call system's contactless buttons according to claim 2, characterized in that the oscillating circuit comprises a first capacitor, a first resistor, a second capacitor, a first triode, a third resistor, a fourth resistor, a third capacitor, a fourth capacitor, a fifth capacitor, an inductor, a sixth capacitor, a seventh capacitor, a fifth resistor, a sixth resistor, a second triode, a seventh resistor, an eighth capacitor, and an eighth resistor;
the first end of the first capacitor is grounded, the second end of the first capacitor is respectively connected with the first end of the first resistor, the first end of the third resistor, the first end of the fifth resistor and the first end of the seventh resistor, and is commonly connected to an external power supply, the second end of the first resistor is respectively connected with the first end of the second resistor, the first end of the second capacitor and the base b of the first triode, the second end of the second resistor is respectively connected with the second end of the second capacitor, the second end of the fourth resistor, the second end of the fourth capacitor, the second end of the inductor, the sixth capacitor, the sixth resistor, the emitter of the second triode and the second end of the eighth resistor, and is commonly grounded, the second end of the third resistor is respectively connected with the collector c, the collector b, and the base b of the first triode, The first end of the third capacitor is connected with the first end of the fifth capacitor, the first end of the fourth resistor is connected with the emitter of the first triode, the second end of the third capacitor and the first end of the fourth capacitor respectively, the second end of the fifth capacitor is connected with the first end of the inductor, the first end of the sixth capacitor and the first end of the seventh resistor respectively, the second end of the seventh capacitor is connected with the second end of the fifth resistor, the first end of the sixth resistor and the base b of the second triode respectively, the second end of the seventh resistor is connected with the collector c of the second triode and the first end of the eighth capacitor respectively, and the second end of the eighth capacitor is connected with the first end of the eighth capacitor and the input end IN of the microprocessor respectively.
4. Call system's contactless buttons according to claim 1, characterized in that the oscillating circuit further comprises a first light emitting diode and a second light emitting diode;
the cathode of the first light emitting diode is connected with an external power supply, the anode of the first light emitting diode and the cathode of the second light emitting diode are commonly connected to the second end of the fifth capacitor, the first end of the inductor, the first end of the sixth capacitor and the first end of the seventh capacitor, and the anode of the second light emitting diode is grounded.
5. Call system's non-contact buttons according to claim 1, further comprising a photoelectric isolation circuit electrically connected with the microprocessor's output for isolating output of the call instructions.
6. Call system's contactless button according to claim 5, characterized in that the opto-electric isolation circuit comprises a ninth resistor, opto-coupler, fuse and ninth capacitor;
the first end of the ninth resistor is connected with the output end of the microprocessor, the second end of the ninth resistor is electrically connected with the first input end of the photoelectric coupler, the second input end of the photoelectric coupler is grounded, the first end of the fuse is electrically connected with the first output end of the photoelectric coupler, the second end of the fuse is connected with the first end of the ninth capacitor, and the ninth capacitor is connected between the first output end and the second output end of the photoelectric coupler.
7. Call system contact-less pushbutton according to claim 1, characterized in that the microprocessor is adapted to respond to a call instruction being generated when the frequency of the call signal exceeds a preset frequency threshold range.
8. Contact-less call system, characterized in that it comprises a plurality of contact-less pushbuttons according to any of claims 1 to 7, and a call control system;
the call control system is electrically connected with the non-contact buttons and is used for receiving call instructions of the non-contact buttons to control the running of the elevator.
9. Contact-less call system according to claim 8, characterized by further comprising LOPs and/or COPs, respectively, for displaying the call instructions.
10. Elevator installation, characterized in that it comprises a contactless call system according to claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110275701.6A CN112919273A (en) | 2021-03-15 | 2021-03-15 | Non-contact button of calling system, non-contact calling system and elevator equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110275701.6A CN112919273A (en) | 2021-03-15 | 2021-03-15 | Non-contact button of calling system, non-contact calling system and elevator equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112919273A true CN112919273A (en) | 2021-06-08 |
Family
ID=76175075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110275701.6A Pending CN112919273A (en) | 2021-03-15 | 2021-03-15 | Non-contact button of calling system, non-contact calling system and elevator equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112919273A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4376930A (en) * | 1980-01-29 | 1983-03-15 | Mitsubishi Denki Kabushiki Kaisha | Call signal conversion apparatus for elevator system |
| US4441034A (en) * | 1981-11-26 | 1984-04-03 | Inventio Ag | Contact-controlled capacitive switching apparatus |
| JPH0613876A (en) * | 1992-06-26 | 1994-01-21 | Omron Corp | Proximity switch |
| JPH0769552A (en) * | 1993-09-01 | 1995-03-14 | Toshiba Corp | Call registering device for elevator |
| US6161655A (en) * | 1998-12-23 | 2000-12-19 | Otis Elevator Company | Non-contact elevator call button |
| CN201214583Y (en) * | 2008-03-27 | 2009-04-01 | 河南省电力公司安阳供电公司 | Exterior calling automatic elimination number apparatus while none waiting for elevator after elevator caller |
| WO2009106109A1 (en) * | 2008-02-28 | 2009-09-03 | Sew-Eurodrive Gmbh & Co. Kg | Inductive data transfer device and system |
| CN205892385U (en) * | 2016-07-20 | 2017-01-18 | 上海长江斯迈普电梯有限公司 | Terraced pushbutton control device is exhaled in initiative response |
| CN107000970A (en) * | 2014-12-02 | 2017-08-01 | 因温特奥股份公司 | Transportation system and the method for control transportation system |
| US20180004298A1 (en) * | 2015-01-22 | 2018-01-04 | Texas Tech University System | System and method for non-contact interaction with mobile devices |
| JP2019142686A (en) * | 2018-02-22 | 2019-08-29 | フジテック株式会社 | elevator |
| US20210034186A1 (en) * | 2019-08-02 | 2021-02-04 | Samsung Electro-Mechanics Co., Ltd. | Touch sensing and force sensing sensor, touch sensing device including the sensor, and an electronic device including the touch sensing device |
-
2021
- 2021-03-15 CN CN202110275701.6A patent/CN112919273A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4376930A (en) * | 1980-01-29 | 1983-03-15 | Mitsubishi Denki Kabushiki Kaisha | Call signal conversion apparatus for elevator system |
| US4441034A (en) * | 1981-11-26 | 1984-04-03 | Inventio Ag | Contact-controlled capacitive switching apparatus |
| JPH0613876A (en) * | 1992-06-26 | 1994-01-21 | Omron Corp | Proximity switch |
| JPH0769552A (en) * | 1993-09-01 | 1995-03-14 | Toshiba Corp | Call registering device for elevator |
| US6161655A (en) * | 1998-12-23 | 2000-12-19 | Otis Elevator Company | Non-contact elevator call button |
| WO2009106109A1 (en) * | 2008-02-28 | 2009-09-03 | Sew-Eurodrive Gmbh & Co. Kg | Inductive data transfer device and system |
| CN201214583Y (en) * | 2008-03-27 | 2009-04-01 | 河南省电力公司安阳供电公司 | Exterior calling automatic elimination number apparatus while none waiting for elevator after elevator caller |
| CN107000970A (en) * | 2014-12-02 | 2017-08-01 | 因温特奥股份公司 | Transportation system and the method for control transportation system |
| US20170357229A1 (en) * | 2014-12-02 | 2017-12-14 | Inventio Ag | Transport system and method of controlling same |
| US20180004298A1 (en) * | 2015-01-22 | 2018-01-04 | Texas Tech University System | System and method for non-contact interaction with mobile devices |
| CN205892385U (en) * | 2016-07-20 | 2017-01-18 | 上海长江斯迈普电梯有限公司 | Terraced pushbutton control device is exhaled in initiative response |
| JP2019142686A (en) * | 2018-02-22 | 2019-08-29 | フジテック株式会社 | elevator |
| US20210034186A1 (en) * | 2019-08-02 | 2021-02-04 | Samsung Electro-Mechanics Co., Ltd. | Touch sensing and force sensing sensor, touch sensing device including the sensor, and an electronic device including the touch sensing device |
Non-Patent Citations (1)
| Title |
|---|
| 张伯虎等, 国防工业出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6434025B2 (en) | Power supply unit | |
| US4943886A (en) | Circuitry for limiting current between power inverter output terminals and ground | |
| US11774501B2 (en) | Switching monitoring device | |
| US4672230A (en) | Electronic proximity switch device | |
| CN115728626A (en) | Train signal control system and relay contact detection device thereof | |
| CN112919273A (en) | Non-contact button of calling system, non-contact calling system and elevator equipment | |
| CN110967619B (en) | Detection circuit, circuit detection and control method | |
| US5229653A (en) | Electronic switch apparatus | |
| US4987366A (en) | Oscillator damped test and evaluation circuit for a proximity switch | |
| US5818681A (en) | Electromagnetic relay drive circuit | |
| US5825233A (en) | Electronic proximity switching device | |
| KR0164233B1 (en) | Microwave oven | |
| US6272001B1 (en) | Emergency stop switch and emergency stop switch circuit | |
| JPS6295485A (en) | Detecting sensor device | |
| JPH05183965A (en) | Device for notifying state of device capable of taking plurality of discrete state by signal from remote place | |
| US20230299654A1 (en) | Device and method for detecting alternating voltage | |
| CN218332332U (en) | Feedforward circuit for intelligent panel and intelligent panel | |
| CN217374512U (en) | Train arrival detection device circuit | |
| CN117080996A (en) | Leakage protector | |
| CN211577288U (en) | Protection tripping outlet test auxiliary device | |
| KR100215677B1 (en) | A circuit breaker having alarm and informing functions | |
| KR910006288B1 (en) | Remote control switching system | |
| JPH05290667A (en) | Optical switch | |
| CN118138033A (en) | Proximity switch circuit | |
| WO1999065145A1 (en) | Threshold operation circuit and gate circuit using it, self-holding circuit and start signal generation circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210608 |
|
| RJ01 | Rejection of invention patent application after publication |