TWI769026B - Elevator button and touch-free induction method thereof - Google Patents

Abstract

The invention provides an elevator button and touch-free induction method thereof includes using a ranging assembly as at least part of the elevator button for detecting an inductive distance between an obstructer relative to ranging assembly, and then repeatedly reading the multiple distances of the obstructer located position in the interval time difference, so as to record the amount of change between the multiple distances, and judging that when the amount of change has a gradually reduced characteristics, issuing a trigger command of touch-free to control the elevator. The invention also provides an elevator button, integrating necessary components for touch-free and touch, so that are mounted on the same a button body, provides ordinary passengers and visually impaired persons can choose to touch-free or touch the way, so as to issue the trigger command to control the elevator.

Description

Elevator button and touch-free sensing method thereof

The invention relates to the induction of elevator buttons and the structure technology thereof, in particular to an elevator button with two-way functions of touch-free induction and touch activation.

Elevators installed in buildings all include a car that can move up and down between floors, and a car park that is installed on each floor for passengers to get on and off the car. It is known that there are multiple floor buttons in the compartment for passengers to give instructions to the floor they want to go to, and a car call button for passengers to give instructions to go up or down the stairs on the wall beside each of the boarding halls.

The types of the above-mentioned floor buttons and car-calling buttons can be roughly divided into two types: push-type and touch-type buttons. Whether it is a push-type or a touch-type button, passengers must press and touch these buttons with their hands. Only then can a floor command or a car call command be issued (ie activated) to the carriage.

However, because the surfaces of the elevator buttons are normally pressed by the fingers of many passengers, there is a lot of dust and germs attached. The dust and germs on these buttons are also very easy to spread to different contacts through the fingers of different passengers. It has seriously affected the prevention and control of vector transmission. Although in general buildings, cleaning staff are arranged to wipe down the floor buttons and car-calling buttons on a regular basis, the effect of preventing the spread of vectors on the buttons is still very limited.

In addition, there are a variety of light beam sensors on the market, such as electric eyes, infrared rays, etc., which have been used in the opening and closing operations of doors, adopting a touch-free form to sense whether people or objects are covering the place where the light beam is projected, and then control the For example, the opening and closing of doors, etc. However, although these light beam sensors can provide a control method in the form of touch-free and induction, they are still difficult to distinguish accurately in the case of elevator control. It is the difference between the command action issued by the finger of the elevator passenger, or the action such as cleaning the button, so it is difficult to apply to the elevator button and needs to be improved.

In view of this, the purpose of the present invention is to apply the light beam sensing technology to the touch button of the elevator, so that the passengers can activate the button in a touch-free induction way, in addition to the touch-free activation of the button. In order to improve the cleanliness of elevator buttons, reduce the problem of vector transmission by human hands or through touching objects.

To this end, the present invention uses the light beam sensing technology to construct the button, which is used to detect the distance change between the passenger's finger and the elevator button, and the distance change must have the characteristic of gradually shrinking, As the identification command to trigger the elevator action. Accordingly, the present invention can eliminate actions that do not have a gradually decreasing distance change, such as a cleaner wiping a button, so as to improve the sensing accuracy when the elevator button is activated in a touch-free manner.

More specifically, a preferred embodiment of the present invention is to provide a touch-free sensing method for elevator buttons, the technical means of which include: using a ranging element as at least a part of the button, and using the ranging element The element detects a sensing distance between a shielding object and the distance measuring element, and continuously reads a plurality of distances of the position of the shielding object in the sensing distance multiple times by means of interval time difference, and then records a distance change amount , and when judging that the distance change has a characteristic of gradually shrinking, a touch-free trigger command is issued to control the elevator; wherein, the gradually shrinking characteristic means that the distance change is less than the sensing distance and greater than 0.

In a further implementation, the distance measuring element can project a light beam on a linear trajectory, and the sensing distance is formed by a series of a calculated distance and a trigger distance respectively greater than 0 in the linear trajectory, wherein the calculated distance is located between the shield and the trigger distance. The trigger distance is located between the calculated distance and the distance measuring element, and the gradually decreasing distance variation is generated when the calculated distance moves toward the distance measuring element. In a further implementation, the calculated distance and the trigger distance are connected to each other through a trigger node, and the gradually decreasing distance change amount is generated when the shield moves from the calculated distance to the trigger node.

In a further implementation, the sensing distance of the shielding object detected by the ranging element is an analog signal, the ranging element includes using a signal conversion module to convert the analog signal into a digital signal, and the button includes using a micro-control unit to convert the analog signal into a digital signal. Receiving the digital signal and interpreting the distance change, the distance measuring element also includes a trigger circuit, and the micro-control unit issues the trigger command to an elevator control unit through the trigger circuit. In a further implementation, the triggering circuit includes using an electronic switch to control the issuing of the triggering command; the gradually decreasing distance variation is represented in the digital signal by an increasing digital system code.

In order to enable the above-mentioned touch-free sensing method and the traditional touch method to be jointly implemented on an elevator button, another preferred embodiment of the present invention provides an elevator button, the structural and technical means of which include: on a body A pressing block, the distance measuring element in the above method and a circuit board are arranged; wherein the device body has a accommodating chamber, and the pressing block can be elastically press-fitted in the accommodating chamber of the device body; the pressing The block has at least one assembly groove, the distance measuring element is fixed in the assembly groove, and the distance measuring element has a sensing portion exposed on the top surface of the pressing block; the circuit board is locked on the bottom of the device body, and the circuit The board is at least arranged with the micro-control unit and the trigger circuit in the above-mentioned method, the micro-control unit is electrically connected between the ranging element and the trigger circuit, and the trigger circuit is electrically connected between the micro-control unit and an elevator control unit. wherein, the trigger circuit includes the electronic switch in the above method and a push switch, the trigger circuit is electrically connected to the micro-control unit via the electronic switch, and the trigger circuit communicates with each other through the electronic switch and the push switch The parallel connection is electrically connected to the elevator control unit, and the pressing block can accept the touch and press the push switch.

In a further implementation, a cover plate is encapsulated on the top of the pressing block, and a pair of light-transmitting holes corresponding to the sensing portion of the distance measuring element is formed on the cover plate.

In a further implementation, the distance measuring element contains a signal conversion module, and the distance measuring element is electrically connected to the micro-control unit through the signal conversion module.

In a further implementation, the elevator control unit provides the power required by the micro-control unit via a power step-down module. Wherein the power step-down module can be built in the distance measuring element.

In a further implementation, at least one of an LED sensor light, an LED prompt light, and a buzzer is arranged on the circuit board; the LED sensor light is electrically connected to the microcontroller unit via the circuit board, and the LED prompt light The elevator control unit is electrically connected, and the buzzer is electrically connected to the trigger circuit.

According to the above-mentioned technical means, the efficiency that the present invention can produce is:

1. Through the touch-free sensing method, passengers are provided with a floating sensing method that avoids touching the button to issue a trigger instruction to the button, eliminating the physical contact between the cover such as the human hand and the button, so as to prevent the contact transmission of disease vectors.

2. In the touch-free sensing method, it is judged whether there is a gradually decreasing distance change in the multiple distances of the location of the shield by means of multiple readings at intervals of time difference, so as to confirm that the shield has a trigger button to control the elevator. Int Improve the accuracy of touch-free sensing.

3. In the structure of elevator buttons, the necessary components of touch-free and touch-type are effectively integrated, so that they can be mounted on the same button body, so that ordinary passengers and visually impaired people can choose the way of avoiding touch or touch. Touch the way to issue floor instructions or car-calling instructions to the elevator car.

The technical means of the above-mentioned methods and apparatuses and the specific implementation details of their performances are described with reference to the following embodiments and drawings.

10: Button

11: Body

111: accommodating cabin

112: Limiting part

113: Fixed seat

12: briquetting

120: Assembly slot

121: Card Holder

122: Positioning hole

13: Elastic element

14: Cover

141: light-transmitting hole

142: Positioning post

15: Twist lock ring Twist lock ring

16: circuit board

161: push switch

17: Screws

20: Ranging element

21: Sensing part

22: Sensing circuit

23: Signal conversion circuit

24: Control circuit

31: Micro Control Unit

32: Trigger circuit

321: Electronic switch

33: LED sensor light

34: Power step-down module

35: LED indicator light

36: Integrated busbar circuit

37: Buzzer

41: Trigger signal transmission line

42: Power input line

43, 43a: Trigger signal feedback line

50: Elevator control unit

60: Shelter

61: Contact

L: Sensing distance

L ₁ : Calculated distance

L ₂ : Trigger distance

A: Analog signal

D: digital signal

δ : distance change

P: trigger node

S1 to S4: Step Description

FIG. 1 is a block diagram showing the steps of implementing the touchless sensing method of the present invention.

FIG. 2 is a configuration diagram of each control element when the method shown in FIG. 1 is executed.

FIG. 3 is a configuration diagram of a signal conversion module built in the distance measuring element shown in FIG. 2 .

FIG. 4a and FIG. 4b are respectively explanatory diagrams of actions for executing the process of the method shown in FIG. 1 .

FIG. 4c is an explanatory diagram of the action of performing touch sensing in the present invention.

FIG. 5 is a configuration diagram of the micro-control unit, the trigger circuit and the elevator control unit shown in FIG. 2 .

Fig. 6 is a perspective exploded view of the touch-free induction button of the elevator of the present invention.

First of all, it must be explained that the related technology of the elevator button provided by the following embodiments of the present invention, especially the touch-free sensing method and the button structure of the button, can be applied to the floor buttons in the elevator car, as well as the various floors. The ride call button.

To this end, please refer to FIG. 1 , which discloses the steps of the present invention for implementing a touch-free sensing method for elevator buttons, and describes the implementation details of the sensing method of the present invention, including a distance measuring element 20 and a micro-control unit 31 inside. The button 10 of (MCU) performs the following steps S1 to S4 on a shield 60:

Step S1: Detecting the approach of the shelter

The present invention selects a light sensing element capable of projecting light beams as the distance measuring element 20 , so that the distance measuring element 20 can be arranged in the button 10 as an indispensable important element in the structure of the button 10 . The distance measuring element 20 must be able to project a light beam to sense and determine whether a shield 60 in the approaching button 10 wants to activate the button 10 in a touch-free manner. In the present embodiment, a laser range finder capable of projecting a laser beam to the outside is used as the distance measuring element 20 for description, but it is not limited thereto. In fact, the ranging element 20 can also be a light sensing element capable of projecting light beams such as infrared rays to the outside, or a sensing element that emits radar waves to the outside.

More specifically, the distance-measuring element 20 can detect the relative distance between the shielding object 60 and the distance-measuring element 20 in the projection field through the projection and recovery of light beams or waves, and the relative distance is this The sensing distance L defined by the invention (as shown in Figure 4a). When the distance measuring element 20 is a light sensing element, the shielding object 60 must be an opaque object in order to shield the light beam. In the elevator boarding and stairwell places, the shielding object 60 can be a finger or any part of the human body, or a rag, a pen or a hand tool. Accordingly, when the shielding object 60 has a shielding effect on the light beam projected by the distance measuring element 20 within the sensing distance L, it means that the shielding object 60 is close to the button 10, and the distance measuring element 20 continues to perform the following step S2; When the shielding object 60 does not shield the light beam within the sensing distance L, it means that there is no shielding object 60 close to the button 10, and the distance measuring element The device 20 is continuously monitored, and the following step S2 is not executed.

Referring to FIG. 2 , it is disclosed that the button 10 may include a power step-down module 34 , and an elevator control unit 50 installed in the elevator hall or the central control terminal to control the lift of the elevator provides the power step-down module through a power input line 42 The operating power required by the group 34 (for example, 24V-DC), and the power step-down module 34 first steps down the operating power (for example, 3V), and then provides the digital control program built in the microcontroller unit 31 and the distance measuring element 20 uses. In addition, the ranging element 20 can transmit the ranging signal to the micro-control unit 31; in essence, the ranging element 20 is electrically connected to the micro-control unit via an integrated bus line 36 (Inter-Integrated Circuit, I ² C). 31 and obtain operating power, and then transmit the ranging signal to the micro-control unit 31 . Wherein, the power step-down module 34 can also be installed outside the button 10, such as the staircase, the central control terminal, or the elevator control unit 50, etc., as long as the power step-down module 34 can step down and convert the voltage of the elevator control unit 50. Electricity, which is used to drive the operation of the micro-control unit 31, belongs to the applicable scope of the present invention.

Please refer to FIG. 3 , which further discloses the implementation structure of using a laser range finder as the distance measuring element 20 , which illustrates that the distance measuring element 20 has a sensing portion 21 used as a projection/receiving port of the laser beam, the The distance measuring element 20 also contains a signal conversion module. The signal conversion module is formed by electrically connecting a sensing circuit 22 , a signal conversion circuit 23 and a control circuit 24 in sequence. Wherein, the integrated bus line 36 is electrically connected between the control circuit 24 of the distance measuring element 20 and the micro-control unit 31;

The sensing portion 21 has a surface mount (SMT) laser projecting/light-receiving element on the sensing circuit 22 . Accordingly, when the laser beam projected by the distance measuring element 20 through the sensing portion 21 is blocked by the shield 60 shown in FIG. 4a , the sensing circuit 22 can generate an analog signal of the distance between the shield 60 A, and the analog signal A is converted into a hexadecimal digital signal D (Analog-to-digital converter, A/D) through the signal conversion circuit 23, and then the hexadecimal digital signal D passes through the control circuit The control of 24 and the bidirectional connection of the integrated bus line 36 are used to control the read request and transmission timing of the hexadecimal digital signal D by the micro-control unit 31, so that the micro-control unit 31 can identify and measure the signal D accordingly. The position signal of the shielding object 60 detected by the distance element 20 .

Step S2: Determine the distance change δ of the shielding object

Immediately after step S1 , the micro-control unit 31 shown in FIG. 2 will immediately execute step S2 shown in FIG. 1 , that is, interpret the sensing distance L of the shield 60 with or without the distance change δ . Further, as shown in FIG. 4a, the sensing distance L is presented in the form of at least one linear trajectory in the beam projection field; or scattering) or the divergent form of the wave; in this embodiment, when a single laser rangefinder is used as the distance measuring element 20, the straight line trajectory is single. The sensing distance L is formed by a series of a calculation distance L ₁ greater than 0 and a trigger distance L ₂ on each linear trajectory, wherein the calculation distance L ₁ is located between the shielding object 60 and the trigger distance L ₂ . The trigger distance L ₂ is located between the calculation distance L ₁ and the sensing portion 21 of the ranging element 20 , and the calculation distance L ₁ and the trigger distance L ₂ are connected via a trigger node P.

Accordingly, the built-in control program of the micro-control unit 31 will instruct the distance measuring element 20 to increase the calculation distance L ₁ , or the calculation distance L ₁ and the trigger distance L ₂ in the form of a time difference within a certain period of time. In the total sensing distance L, multiple distances at the position of the shield 60 are continuously and repeatedly read; wherein, at least in the calculated distance L ₁ , the multiple distances at the position of the shield 60 are read multiple times, which will be The column of the micro-control unit 31 is a valid value for judging the amount of distance change; wherein, the number of times of the successive reading is the majority, and is defined by the control program built in the micro-control unit 31 . Accordingly, when the micro-control unit 31 determines that the shielding object 60 has a distance variation δ in the calculated distance L ₁ , the following step S3 is continued. When the micro-control unit 31 determines that the distance variation δ of the shielding object 60 in the calculated distance L ₁ does not change, it returns to the above step S1.

Step S3: Determine whether the distance change δ is gradually decreasing

After step S2, the control program built in the micro _- control unit 31 shown in FIG. 2 will immediately execute step S3 shown in FIG. It has the characteristics of "decreasing and shrinking" for interpretation. In the present invention, the "gradual reduction" is defined as the distance change δ smaller than the sensing distance L and greater than 0 in the technical concept of the upper level, and is defined as the shield 60 in the technical concept of the sub-level From the process _of gradually moving from the calculated distance L1 to the triggering distance _L2 or the triggering node P, the resulting distance variation δ has the characteristic of gradually shrinking, and there is still a difference between the shield 60 and the distance measuring element 20. 0 floating trigger distance L ₂ (as shown in Figure 4a).

To be more specific, the control program built in the micro-control unit 31 will successively record a plurality of valid values of the position of the shelter 60 in the calculation distance L ₁ at each interval time difference, and record whether the plurality of valid values are gradually reduced. The distance change δ. The gradually decreasing distance variation δ refers to the digital system codes of multiple significant values of the position of the shielding object 60 in the calculated distance L ₁ , showing an increasing situation (as shown in the following table a rectangular frame).

In Table 1, the Timestamp column shows that the micro-control unit 31 operates with a time difference of 9.15 milliseconds (ms) one by one, and the micro-control unit 31 also displays in the Status Next, the distance measuring element 20 is issued with the command of request start (Request Start) and start (Start) to read the valid value, and the read command (Rd) of the micro-control unit 31 to the valid value is displayed in the program command (RW) field successively. ) and the write command (Wr), correspondingly, are displayed at the same address 60 in the Address column, and the distance measuring element 20 continuously acquires the position _of the shield 60 in the calculated distance L1. The valid value of , and it is expressed in hexadecimal code in the data (Data) field.

Please further check the "rectangular frame" part in Table 1, it is pointed out that the hexadecimal code "B6 07" is displayed in the data field of item 1019, and "B6 07" is converted to decimal = "1974""; display the hexadecimal code "OC 08" in the data field of item 1021, and convert "OC 08" to decimal = "2060"; and display the hexadecimal code in the data field of item 1023 The hexadecimal code is "7A 08", and "7A 08" is converted into decimal = "2170"; among them, since the effective value "1974<2060<2170" is gradually increasing, it means that the 60-bit of the shield is in the calculation distance The plurality of distance data at the location in L ₁ has a gradually decreasing distance change amount δ, and then it is determined that the shield 60 has the intention of triggering the button 10 to control the elevator. At this time, as disclosed in FIG. 4a , the shielding object 60 moves toward the sensing portion 21 of the ranging element 20 and then reaches the position of the trigger node P, and the shielding object 60 and the projecting/receiving port of the ranging element 20 are mutually The dangling form with the trigger distance L ₂ is separated; wherein, the calculation distance L ₁ greater than 0 indicates the existence of a gradually decreasing distance variation δ , and the trigger distance L ₂ greater than 0 indicates that the shielding object (such as a finger) does not Touch button 10 to avoid spreading the vector.

In addition, when the valid values after the conversion of the hexadecimal codes shown in Table ₁ are gradually decreasing or remain unchanged, it means that the multiple distances where the shielding object 60 is located in the calculated distance L1 do not appear as described above. At this time, the micro-control unit 31 reverts to the above-mentioned step S1. Moreover, the distance change of the shield 60 moving from the trigger node P to the projection/reception port of the distance measuring element 20 gradually, even if it is gradually reduced, may not be listed by the micro-control unit 31 as a valid value of the distance change.

Step S4: Issue a touch-free trigger command to control the elevator

As shown in FIG. 2 , the disclosure button 10 further includes a trigger circuit 32 , an LED sensor light 33 and an LED indicator light 35 ; the trigger circuit 32 is electrically connected to the micro-control unit 31 via a circuit board 16 , so that the micro- The control unit 31 can be electrically connected between the distance measuring element 20 and the trigger circuit 32 ; furthermore, the trigger circuit 32 is also electrically connected to the trigger signal transmission line 41 and a trigger signal feedback line 43 . The elevator control unit 50, so that the trigger circuit 32 can be electrically connected between the micro-control unit 31 and the elevator control unit 50, and the LED induction light 33 is electrically connected to the micro-control unit via the circuit board 16 31, and the LED prompt light 35 is electrically connected to the elevator control unit 50 via another trigger signal feedback line 43a.

Accordingly, after the continuation of step S3, that is, the micro-control unit 31 learns a plurality of distances of the position of the shield 60 in the calculated distance L1, there is _a gradually decreasing distance variation δ, and the trigger button 10 is intended to control the elevator. At this time, the micro-control unit 31 immediately activates the trigger circuit 32 and the LED induction lamp 33 to emit light. Wherein, the activated trigger circuit 32 issues a touch-free trigger command to the elevator control unit 50 via the trigger signal transmission line 41, and the elevator control unit 50 will receive the action of the touch-free trigger command via the trigger signal feedback line 43 It is fed back to the trigger circuit 32 to confirm that the touch-free trigger command has been received. Wherein, the LED sensor light 33 can be used as a touch-free sensor light for the button 10 , and when the LED sensor light 33 is activated to emit light, it can prompt the passenger that the button 10 has been sensed in a touch-free manner. Among them, the LED prompt light 35 can be used as a prompt light for displaying the number of floors in the button 10. When the elevator control unit 50 receives the trigger command issued by the trigger circuit 32, it will start the LED prompt light 35 to emit light, so as to remind passengers of the elevator The trigger command given by the passenger will be executed, and will go to the floor the passenger arrived at. In addition, FIG. 2 discloses that the button 10 may further include a buzzer 37, and the buzzer 37 can be electrically connected to the trigger circuit 32 by a signal line; accordingly, when the microcontroller 31 activates the trigger circuit 32, The trigger buzzer 37 will sound synchronously, so as to prompt the passengers that the action of issuing the trigger command has been completed.

The LED sensor light 33 , the LED prompt light 35 , and the buzzer 37 can be implemented alternatively or combined, and all belong to the scope of application of the present invention.

Please refer to FIG. 5 , which further discloses the implementation details of the trigger circuit 32 , illustrating that the elevator control unit 50 provides the operating power (eg 24V-DC) required by the trigger circuit 32 through the electrical connection of the power input line 42 . The trigger circuit 32 includes an electronic switch 321 electrically connected to the pins of the micro-control unit 31 , and the double contacts of the electronic switch 321 are electrically connected to the elevator control unit via the trigger signal transmission line 41 and the trigger signal feedback line 43 respectively. 50, so that the trigger circuit 32 needs to issue a touch-free trigger During the command, the electronic switch 321 can be controlled to open, so as to connect the trigger signal transmission line 41 and the trigger signal feedback line 43, and issue the touch-free trigger command to the elevator control unit 50, and then control the lift of the elevator. On the contrary, the trigger circuit 32 When it is not necessary to issue a touch-free trigger command, the electronic switch 321 can be controlled to close the passage between the trigger signal transmission line 41 and the trigger signal feedback line 43 .

Next, referring to FIG. 4b , it is explained that the shielding object 60 does not specifically complete the steps S1 to S4 shown in FIG. ₁ , that is, even if the shielding object 60 moves within the sensing distance L1, the light beam projected on the distance measuring element 20 When the shielding effect is generated (step S1 is completed), but the shielding object 60 only moves laterally or sways laterally back and forth (simulating the action of cleaning personnel wiping the buttons with a rag), due to the lack of the distance change δ of the linear beam trajectory (Step S2 has not been completed), or even if there is a distance change amount δ, but the distance change amount δ does not have the element of gradually decreasing (step S3 has not been completed), it will be determined that the touch-free trigger command has not been completed ( Step S4) cannot be executed, so the elevator does not move.

According to the detailed explanation of the above steps S1 to S4, the touch-free induction method for elevator buttons of the present invention can be realized; in addition, the present invention also includes an elevator that can implement the touch-free induction method according to this. The button structure enables the button of the present invention not only to provide passengers with a touch-free induction mode to start the elevator, but also to provide passengers to start the elevator in a traditional touch mode.

To this end, referring to FIG. 6 , it is disclosed that the button 10 of the present invention includes a space provided by a body 11 to install a pressing block 12 , at least one elastic element 13 , a cover plate 14 and a twist lock ring 15 . in:

The body 11 is roughly in the shape of a ring seat, and a accommodating chamber 111 is formed in the body 11 , and a fixing seat 113 equal to the number of the elastic element 13 is formed on the groove wall of the accommodating chamber 111 . The upper part can be a compression spring, the pressing block 12 can cooperate with one or more elastic elements 13 to elastically press fit into the accommodating compartment 111, the bottom of the pressing block 12 is formed with a plurality of clamping parts 121, the accommodating compartment The groove wall of 111 is formed with a limit portion 112 equal to the number of the holding portion 121, and the pressing block 12 is restrained by the limiting portion 112 through the holding portion 121 and is limited in the accommodating compartment 111, so that the pressing block 12 can be carry For passengers to elastically press without leaving the accommodation compartment 111 . The holding portion 121 is a hook in implementation, and the limiting portion 112 is a slot in implementation.

The pressing block 12 is provided with at least one assembly slot 120, which is used for fixing the distance measuring element 20 described in the above induction method. Therefore, the sensing portion 21 of the distance measuring element 20 can be exposed at an appropriate position on the top surface of the pressing block 12 .

The cover plate 14 can be packaged on the top of the pressing block 12 in a snap-fit manner, and a light-transmitting hole 141 corresponding to the position of the sensing portion 21 can be formed on the cover plate 14 , so that the sensing portion 21 can pass through the light-transmitting hole 141 Project a beam of light outside. Further, a plurality of positioning columns 142 are formed at the bottom of the cover plate 14 , and positioning holes 122 corresponding to the positioning columns 142 are formed at the top of the pressing block 12 . The cover plate 14 is inserted into the positioning holes 122 through the positioning columns 142 . It is buckled on the top of the pressing block 12 , so that the cover plate 14 and the pressing block 12 can be combined into one body and have the function of elastic pressing. It must be noted here that the cover plate 14 is an optional fitting and not an essential element of the present invention.

Please refer to FIG. 2 and FIG. 6 together, in which FIG. 6 illustrates that the top surface of the cover 14 can be implemented to form a schematic blind spot pattern or/and characters such as the number of floors, so as to facilitate the visually impaired and ordinary passengers, who can use touch The object 61 (such as a human hand) physically presses the cover plate 14 , and then the integrated pressing block 12 is linked to produce a feed-contraction elastic movement in the accommodating compartment 111 of the device body 11 . FIG. 2 further discloses a situation in which the passenger touches the pressing block 12 with the contact object 61 (eg, human hand) to activate the trigger circuit 32 .

The circuit board 16 described in the above induction method can be locked on the bottom of the device body 11 in cooperation with at least one screw 17, and the circuit board 16 is used to construct the micro control unit 31, trigger circuit 32, The LED sensor light 33 , the power step-down module 34 , the LED prompt light 35 , the integrated bus line 36 and the buzzer 37 enable the power input line 42 , the trigger signal transmission line 41 and the trigger signal feedback line 43 to pass through the circuit The board 16 is electrically connected to the elevator control unit 50 .

In addition, as shown in FIG. 6 , a film-type push switch 161 is also installed on the circuit board 16 ; please refer to FIG. 5 , it is explained that the trigger circuit 32 includes the push switch 161 ; The flip-flop circuit 32 includes in addition to In addition to the electronic switch 321 required for touch-free sensing, it also includes a push switch 161 required for human touch, and the double contacts of the push switch 161 are electrically connected to the trigger signal transmission line 41 and the trigger signal feedback line 43 respectively. The elevator control unit 50 ; wherein, the electronic switch 321 and the push switch 161 are connected in parallel with each other via the trigger signal transmission line 41 and the trigger signal feedback line 43 . Furthermore, the push switch 161 is located on the feed-contraction movement path of the pressure block 12 , so that the present invention can also allow the passenger to physically touch the pressure block 12 on the button 10 with the contact object 61 , so that the pressure block 12 can be elastically compressed. The push switch 161 is pressed to activate the trigger circuit 32 to issue a touch trigger command (as shown in FIG. 2 and FIG. 4 c ). In addition, the outer wall of the device body 11 can be formed with threads, so as to match the twist-lock ring 15 to install the entire button 10 on the elevator panel of the passenger wall and the car wall, so that the button 10 of the present invention can be used as a floor button and Call button. It must be stated here that the twistlock ring 15 is an optional fitting of the present invention and not an essential element.

The above embodiments are only preferred embodiments of the present invention, but should not be construed as limiting the scope of the present invention. Therefore, the present invention should be subject to the content of the claims defined in the scope of the patent application.

10: Button

20: Ranging element

60: Shelter

S1 to S4: Step Description

Claims (14)

A touch-free sensing method for an elevator button, comprising: using a distance measuring element as at least a part of the button, and using the distance measuring element to project a beam to detect a sensing distance between a shield relative to the distance measuring element , continue to read multiple distances of the position of the shielding object in the sensing distance multiple times by means of interval time difference, and then record a distance change, and when it is judged that the distance change has a characteristic of gradually shrinking, issue a free The touch trigger instruction controls the elevator; wherein, the sensing distance is presented by at least a straight line trajectory derived from the button, the distance measuring element projects a light beam along the straight line trajectory, and the gradually shrinking characteristic means that the distance change is less than The sensing distance is greater than 0. The touch-free sensing method for elevator buttons as claimed in claim 1, wherein the sensing distance is formed by a sequence of a calculation distance and a trigger distance that are respectively greater than 0 in the linear trajectory, wherein the calculation distance is located between the shielding object and the triggering distance. The trigger distance is located between the calculated distance and the distance measuring element, and the gradually decreasing distance change amount is generated when the shielding object moves toward the distance measuring element from the calculated distance. The touch-free sensing method for elevator buttons as claimed in claim 2, wherein the calculation distance and the trigger distance are connected to each other through a trigger node, and the gradually decreasing distance variation is the movement of the shield from the calculation distance to the Generated when a node is triggered. The touch-free sensing method for elevator buttons according to claim 1, wherein the sensing distance of the distance measuring element for detecting the shielding object is an analog signal, and the distance measuring element includes using a signal conversion module to convert the analog signal into a signal. Digital signal, the button includes using a micro-control unit to receive the digital signal and interpret the distance change, and the distance-measuring element also includes using a trigger circuit, the micro-control unit issues a command to an elevator control unit through the trigger circuit. the trigger command. The touch-free induction method for elevator buttons as claimed in claim 4, wherein The trigger circuit includes using an electronic switch to control the issuance of trigger commands. The touch-free sensing method for elevator buttons according to claim 4, wherein the gradually decreasing distance variation is represented in the digital signal by an increasing digit code. An elevator button, comprising: a body with an accommodating compartment; a pressing block, which can be elastically press-fitted in the accommodating compartment of the body, and the pressing block has at least one assembly groove; The distance element is fixed in the assembling slot, and the distance measuring element has a sensing part exposed on the top surface of the pressing block; and a circuit board, which is locked and mounted on the bottom of the device body, and the circuit board is arranged with at least a micro A control unit and a trigger circuit, the micro-control unit is electrically connected between the ranging element and the trigger circuit, and the trigger circuit is electrically connected between the micro-control unit and an elevator control unit; wherein, the trigger circuit includes a An electronic switch and a push switch, the trigger circuit is electrically connected to the micro-control unit through the electronic switch, and the trigger circuit is electrically connected to the elevator control unit in parallel with each other through the electronic switch and the push switch, the The pressing block can accept the touch and press the push switch. The elevator button according to claim 7, wherein a cover plate is encapsulated on the top of the pressing block, and a pair of light-transmitting holes corresponding to the sensing portion of the distance measuring element is formed on the cover plate. The elevator button according to claim 7, wherein the distance measuring element contains a signal conversion module, and the distance measuring element is electrically connected to the micro-control unit through the signal conversion module. The elevator button as claimed in claim 7, wherein the elevator control unit provides power required by the micro-control unit via a power step-down module. The elevator button of claim 10, wherein the power step-down module is contained in the ranging element. The elevator button according to claim 7, wherein the circuit board is further arranged with an LED sensor light, and the LED sensor light is electrically connected to the microcontroller unit via the circuit board. The elevator button according to claim 7, wherein the circuit board is further provided with an LED prompt light, and the LED prompt light is electrically connected to the elevator control unit. The elevator button according to claim 7, wherein a buzzer is further arranged on the circuit board, and the buzzer is electrically connected to the trigger circuit.

Images