CN101811638B - Longitudinal elevator light curtain system and method for detecting longitudinal elevator light curtain - Google Patents
Longitudinal elevator light curtain system and method for detecting longitudinal elevator light curtain Download PDFInfo
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- CN101811638B CN101811638B CN201010150301A CN201010150301A CN101811638B CN 101811638 B CN101811638 B CN 101811638B CN 201010150301 A CN201010150301 A CN 201010150301A CN 201010150301 A CN201010150301 A CN 201010150301A CN 101811638 B CN101811638 B CN 101811638B
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Abstract
The invention discloses a longitudinal elevator light curtain system and a method for detecting a longitudinal elevator light curtain. In the invention, the longitudinal elevator light curtain system comprises at least three infrared emitting units (receiving units), a plurality of infrared receiving units (emitting units) and a signal processing module, wherein the infrared emitting units are arranged on the upper part of an elevator-cabin door; the infrared receiving units are arranged on the lower part of the elevator-cabin door for receiving the infrared rays which are emitted by the infrared emitting units and forming a light curtain in the region of the elevator-cabin door (the same effect can be achieved by the vertical exchange of the emitting ends and receiving ends according to the principle that the optical path is reversible); and the signal processing module is connected with all the infrared emitting units and all the infrared receiving units for controlling the time sequence in which the infrared emitting units emit the infrared rays and reading induction signals of the infrared receiving units to judge the working state of the light curtain. The longitudinal elevator light curtain system and the method for detecting the longitudinal elevator light curtain have the advantages of low cost, high reliability and long service life.
Description
Technical field
The present invention relates to the elevator light curtain technical field, particularly a kind of vertical formula elevator light curtain system of low cost and high reliability and vertical formula elevator light curtain detection method.
Background technology
Elevator light curtain is to prevent that elevator from clamping the safety device of passenger or goods automatically at closing time.He utilizes the high-velocity scannings of many group infrared emission and receiving element, and the shelter in the detection protection zone also provides signal to upper control convenience.
The elevator light curtain overwhelming majority of existing market supply is a horizontal detection light curtain, sees also Fig. 1, and it is installed in the birds-eye view in the elevator for horizontal detection light curtain.Two fan elevator cage doors, 13 places about infra-red ray transmitting unit 11 is installed in respectively with infrared ray receiving element 12; It is along with elevator cage 14 moves together; And utilize the gap (nearly 50mm width) between elevator cage door 13 and the hoistway door 15 to form detection light curtain; Come to cause safety misadventure to prevent them to be squeezed to whether existing human body or object to detect between the elevator door.
See also Fig. 2, it is the scheme drawing of existing horizontal detection light curtain.Common elevator door height is generally 2 meters, in order to guarantee the coverage density of light curtain, needs configuration 32 pairs of infra-red ray transmitting unit 11 and infrared ray receiving element 12 usually.This horizontal elevator light curtain has advantages such as the density of detection is high, installation is convenient, but its shortcoming is also clearly, is summarized as follows at present:
1, to survey the quantity that density must guarantee infra-red ray transmitting unit and infrared ray receiving element in order improving, generally to be no less than 32 pairs, this can significantly increase the cost of product.
2, infra-red ray transmitting unit and infrared ray receiving element are too much; Can make system become complicated; Because all there is reliable probability in each electronic devices and components, thereby the infra-red ray transmitting unit of One's name is legion and infrared ray receiving element can reduce integral light curtain reliability of system operation.
3, the light curtain is installed in the both sides of elevator cage door, and along with the switch of elevator cage door, light curtain cable will bear thousands of times bending every day, and this is easy to cause cable to open circuit.
Summary of the invention
The purpose of this invention is to provide two kinds of vertical formula elevator light curtain systems, with the problem that solves existing horizontal detection light curtain cost height, poor reliability, causes cable to open circuit easily.
Another object of the present invention provides a kind of vertical formula elevator light curtain detection method, with the problem that solves existing horizontal detection light curtain cost height, poor reliability, causes cable to open circuit easily.
The present invention proposes a kind of vertical formula elevator light curtain system, comprises at least three infra-red ray transmitting unit, several infrared ray receiving element and signal processing modules.Infra-red ray transmitting unit is arranged on the top of elevator cage door.The infrared ray receiving element is arranged on the bottom of elevator cage door, is used to receive the infrared ray that said infra-red ray transmitting unit emission comes, and in the zone of elevator door, forms the light curtain.Signal processing module links to each other with the infrared ray receiving element with all infra-red ray transmitting unit, is used to control said infra-red ray transmitting unit and launches ultrared sequential, and read the induced signal of said infrared ray receiving element, to judge the mode of operation of light curtain.
According to the described vertical formula elevator light curtain of preferred embodiment of the present invention system; It also comprises light curtain plate and following light curtain plate; Said upward light curtain plate is arranged on the top of elevator cage door, and said infra-red ray transmitting unit is embedded in the light curtain plate, and said light curtain plate down is arranged on the bottom of elevator cage door; Said infrared ray receiving element is embedded in down in the light curtain plate, and said light curtain plate and the said space position of light curtain plate between elevator cage door and hoistway door down of going up.
According to the described vertical formula elevator light curtain of preferred embodiment of the present invention system, said to go up light curtain plate consistent with the car door width with the length of said light curtain plate down.
The present invention also proposes a kind of vertical formula elevator light curtain system, comprises at least several infra-red ray transmitting unit, at least three infrared ray receiving elements and signal processing module.Infra-red ray transmitting unit is arranged on the bottom of elevator cage door.The infrared ray receiving element is arranged on the top of elevator cage door, is used to receive the infrared ray that said infra-red ray transmitting unit emission comes, and in the zone of elevator door, forms the light curtain.Signal processing module links to each other with the infrared ray receiving element with all infra-red ray transmitting unit, is used to control said infra-red ray transmitting unit and launches ultrared sequential, and read the induced signal of said infrared ray receiving element, to judge the mode of operation of light curtain.
According to the described vertical formula elevator light curtain of preferred embodiment of the present invention system; It also comprises light curtain plate and following light curtain plate; Said upward light curtain plate is arranged on the top of elevator cage door, and said infrared ray receiving element is embedded in the light curtain plate, and said light curtain plate down is arranged on the bottom of elevator cage door; Said infra-red ray transmitting unit is embedded in down in the light curtain plate, and said light curtain plate and the said space position of light curtain plate between elevator cage door and hoistway door down of going up.
According to the described vertical formula elevator light curtain of preferred embodiment of the present invention system, said to go up light curtain plate consistent with the car door width with the length of said light curtain plate down.
The present invention proposes a kind of vertical formula elevator light curtain detection method in addition; May further comprise the steps: a, infra-red ray transmitting unit is arranged on the top of elevator cage door; The infrared ray receiving element is arranged on the bottom of elevator cage door; Or infra-red ray transmitting unit is arranged on the bottom of elevator cage door, the infrared ray receiving element is arranged on the top of elevator cage door.B, control infra-red ray transmitting unit are launched infrared ray in turn with time-sharing format.C, read the signal of cooresponding infrared ray receiving element, and judged whether object shading light curtain according to the situation of infrared receiver tube receiving infrared-ray.D, if foreign matter shading light curtain arranged, output alarm signal immediately then.
According to the described vertical formula elevator light curtain detection method of preferred embodiment of the present invention, may further comprise the steps when having judged whether object shading light curtain: e, the abnormal alarm limited number of times is set.F, read the signal that infrared ray receiving element transmission comes.G, judge that whether same infrared ray receiving element does not receive ultrared number of times greater than said abnormal alarm limited number of times.H, if greater than said abnormal alarm limited number of times, output alarm signal immediately then.
With respect to prior art, the invention has the beneficial effects as follows:
1, the present invention adopts vertical formula light curtain, and light curtain plate length can reduce to about 1 meter usually, and infra-red ray transmitting unit and infrared ray receiving element all correspondingly reduce, significantly cost-cutting.
2, circuit layout of the present invention based on the change of traditional horizontal detection light curtain seldom, and because the minimizing of electronic devices and components makes the reliability of system strengthen greatly.
3, the quantity of infra-red ray transmitting unit of the present invention and infrared ray receiving element can be adjusted according to demand, and adopts the search coverage of design of the present invention back elevator door that very high light curtain protection density is still arranged, and has very high safety.
4, the present invention designs and adopts the fixed installation mode, and the cable of having avoided the frequent bending of light curtain cable to cause opens circuit.
Certainly, arbitrary product of embodiment of the present invention might not reach above-described all advantages simultaneously.
Description of drawings
Fig. 1 is installed in the birds-eye view in the elevator for existing horizontal detection light curtain;
Fig. 2 is the scheme drawing of existing horizontal detection light curtain;
Fig. 3 is first kind of light curtain structure scheme drawing of the vertical formula elevator light curtain of the present invention system;
Fig. 4 is second kind of light curtain structure scheme drawing of the vertical formula elevator light curtain of the present invention system;
Fig. 5 is the third light curtain structure scheme drawing of the vertical formula elevator light curtain of the present invention system;
Fig. 6 is a kind of embodiment diagram of circuit of the vertical formula elevator light curtain of the present invention detection method;
Fig. 7 is the vertical formula infrared ray of a present invention curtain workflow diagram.
The specific embodiment
Main thought of the present invention is the upper and lower that the infra-red ray transmitting unit of elevator light curtain system and infrared ray receiving element branch is located at elevator cage door; Thereby can correspondingly reduce the quantity of infra-red ray transmitting unit and infrared ray receiving element, reach the purpose of cost-cutting, raising reliability.
Vertical formula elevator light curtain of the present invention system comprises light curtain plate, light curtain plate, infra-red ray transmitting unit, infrared ray receiving element and signal processing module down; Last light curtain plate is arranged on the top of elevator cage door; Following light curtain plate is arranged on the bottom of elevator cage door; And (elevator cage door is promptly with the movable inside door of elevator in last light curtain plate and the following light curtain plate position, space between elevator cage door and hoistway door; Hoistway door promptly is installed in the fixedly elevator external door of floor, and the width of nearly 50mm between the two is in the influence that can not receive the dodge gate switch that transmits and receives of this space middle infrared (Mid-IR)).Infra-red ray transmitting unit and infrared ray receiving element are embedded in respectively in light curtain plate and the following light curtain plate; Wherein, Both can embedded infra-red ray transmitting unit in the last light curtain plate, also can embedded infrared ray receiving element, same; Both can embedded infra-red ray transmitting unit in the following light curtain plate, also can embedded infrared ray receiving element.Signal processing module links to each other with the infrared ray receiving element with all infra-red ray transmitting unit, is used to control said infra-red ray transmitting unit and launches ultrared sequential, and read the induced signal of said infrared ray receiving element, to judge the mode of operation of light curtain.
Below in conjunction with accompanying drawing, specify the present invention.
Embodiment one
See also Fig. 3, it is for a kind of smooth curtain structure scheme drawing of the vertical formula elevator light curtain of the present invention system.In the present embodiment; Five infra-red ray transmitting unit 31 are installed in elevator cage door top; 17 infrared ray receiving elements 32 are installed in the elevator cage door bottom; And the infrared ray that each infra-red ray transmitting unit 31 is sent all can be received by a plurality of infrared ray receiving elements 32, thereby in the zone of elevator door, forms the light curtain.
In use; When infrared ray can't be received certain or certain a few infrared ray receiving elements 32 by obstruct; Explain come in and go out elevator or there is object blocks at the elevator door place of passenger is arranged this moment; These infrared ray receiving elements 32 can be transferred to signal processing module with the work state information of this time curtain, and are transferred to elevator control cabinet after by signal processing module signal being handled.Wherein signal processing module comprises micro controller system and peripheral circuit; The effect of micro controller system is the emission sequential of control infra-red ray transmitting unit 31; And after the signal that each cycle reads from infrared ray receiving element 32 handled, light curtain signal is sent to elevator control cabinet through the relay contact mode or the transistor voltage way of output.
It should be noted that; Because general elevator door; Its width is all less than its height; Therefore infra-red ray transmitting unit 31 and infrared ray receiving element 32 are arranged on the upper and lower of elevator door, under the prerequisite that guarantees light curtain density, (infra-red ray transmitting unit 31 is arranged on and minimumly under the situation on top reduces to three can to significantly reduce the quantity of infra-red ray transmitting unit 31 and infrared ray receiving element 32; Infrared ray receiving element 32 is arranged on and minimumly under the situation of bottom reduces to 16), thus the cost of light curtain system can be reduced greatly.And the light curtain plate that uses also can taper to about 1 meter, equally also reduced the material cost of light curtain system.And the minimizing of electronic devices and components correspondingly can improve the reliability of total system.
Embodiment two
See also Fig. 4, according to the principle of reversibility of light path, with respect to embodiment one, present embodiment exchanges the position of infra-red ray transmitting unit and infrared ray receiving element.In the present embodiment; Five infrared ray receiving elements 42 are installed in elevator cage door top; 17 infra-red ray transmitting unit 41 are installed in the elevator cage door bottom; And each infrared ray receiving element 42 all can receive the infrared ray that a plurality of infra-red ray transmitting unit 41 are sent, thereby in the zone of elevator door, forms the light curtain.
The working process of present embodiment and advantage are all identical with embodiment one, repeat no more here.
Embodiment three
See also Fig. 5; In the present embodiment; Three infra-red ray transmitting unit 51 are installed in elevator cage door top; 17 infrared ray receiving elements 52 are installed in the elevator cage door bottom, and the infrared ray that sends of each infra-red ray transmitting unit 51 all can receive by all infrared ray receiving elements 52, thereby in the zone of elevator door, form the light curtain.
Because the infra-red ray transmitting unit 51 in the present embodiment has very big divergence of beam angle, thereby requires infra-red ray transmitting unit 51 to have higher luminous power.And with respect to embodiment one and embodiment two, because the protection face of each infra-red ray transmitting unit 51 is very wide, so present embodiment has very high light curtain density.
Corresponding to above-mentioned light curtain system, the invention allows for a kind of vertical formula elevator light curtain detection method, as shown in Figure 6, it may further comprise the steps:
S601 is installed in infra-red ray transmitting unit and infrared ray receiving element the upper and lower of elevator cage door.
Among the present invention, infra-red ray transmitting unit both can be arranged on the top of elevator cage door, also can be arranged on the bottom of elevator cage door.Equally, the infrared ray receiving element both can be arranged on the top of elevator cage door, also can be arranged on the bottom of elevator cage door.During installation; Can infra-red ray transmitting unit and infrared ray receiving element be embedded in light curtain plate and the following light curtain plate; And because the width of elevator door is less than height; Therefore this mounting means can shorten the length of light curtain plate, and under the prerequisite that meets light curtain density, reduces the quantity of infra-red ray transmitting unit and infrared ray receiving element.
S602, the control infra-red ray transmitting unit is launched infrared ray in turn with time-sharing format.The emission sequential of infra-red ray transmitting unit is by Single-chip Controlling.
S603 reads the signal that cooresponding infrared ray receiving element transmission comes, and has judged whether object shading light curtain according to the situation of infrared receiver tube receiving infrared-ray.
S604, if foreign matter shading light curtain arranged, output alarm signal immediately then.
Among the present invention, micro controller system is to launch infrared ray in turn with time-sharing format control infra-red ray transmitting unit, for ease of further understanding its working process, with a comparatively detailed instance whole detection flow process is described at present.For ease of describing, the infra-red ray transmitting unit numbering is replaced with variable N, the infra-red ray transmitting unit sum is made as M, and infrared ray receives unusual accumulative total representes that with X the abnormal alarm limited number of times is made as Y.Infra-red ray transmitting unit quantity M looks actual conditions and can adjust, and abnormal alarm limited number of times Y also looks actual conditions and can adjust.As shown in Figure 7, the working process of light curtain may further comprise the steps:
S701, program start and initialization.
S702 establishes N=1, X=0.
S703 starts infra-red ray transmitting unit N.
S704, corresponding infrared ray receiving element receiving infrared-ray, and signal is transferred to micro controller system.
S705, micro controller system judges with the cooresponding infrared ray receiving element of infra-red ray transmitting unit N whether all receive infrared ray.If then get into step S708.If not, then get into step S706.
S706 carries out computing: X=X+1
S707 judges that whether X is greater than Y.If not, then get into step S703.If then confirming has the passenger to come in and go out, and sends alerting signal immediately.
S708 carries out computing: N=N+1, X=0.
S709 judges that whether N is greater than M.If not, then get back to step S703, if then get back to step S702.
With respect to the light curtain of existing transverse type, the present invention has the following advantages:
1, the present invention adopts vertical formula light curtain, and light curtain plate length reduces to about 1 meter, and infra-red ray transmitting unit and infrared ray receiving element all correspondingly reduce, significantly cost-cutting.
2, circuit layout of the present invention based on the change of traditional horizontal detection light curtain seldom, and because the minimizing of electronic devices and components makes the reliability of system strengthen greatly.
3, the quantity of infra-red ray transmitting unit of the present invention and infrared ray receiving element can be adjusted according to demand, and adopts the search coverage of design of the present invention back elevator door that very high light curtain protection density is still arranged, and has very high safety.
4, the present invention designs and adopts the fixed installation mode, and the cable of having avoided the frequent bending of light curtain cable to cause opens circuit.
More than disclosedly be merely several specific embodiment of the present invention, but the present invention is not limited thereto, any those skilled in the art can think variation, all should drop in protection scope of the present invention.
Claims (7)
1. a vertical formula elevator light curtain system is characterized in that, comprising:
At least three infra-red ray transmitting unit, it is arranged on the top of elevator cage door;
Several infrared ray receiving elements, the bottom that it is arranged on elevator cage door is used to receive the infrared ray that said infra-red ray transmitting unit emission comes, and in the zone of elevator door, forms the light curtain;
One signal processing module; It links to each other with the infrared ray receiving element with all infra-red ray transmitting unit; Be used to control said infra-red ray transmitting unit and launch ultrared sequential, and read the induced signal of said infrared ray receiving element, to judge the mode of operation of light curtain;
Last light curtain plate, said upward light curtain plate is arranged on the top of elevator cage door, and said infra-red ray transmitting unit is embedded in the light curtain plate;
Following light curtain plate, said light curtain plate down is arranged on the bottom of elevator cage door, and said infrared ray receiving element is embedded in down in the light curtain plate;
Said light curtain plate and the said space position of light curtain plate between elevator cage door and hoistway door down of going up.
2. vertical formula elevator light curtain as claimed in claim 1 system is characterized in that, said to go up light curtain plate consistent with the elevator cage door width with the length of said light curtain plate down.
3. a vertical formula elevator light curtain system is characterized in that, comprising:
Several infra-red ray transmitting unit, it is arranged on the bottom of elevator cage door;
At least three infrared ray receiving elements, the top that it is arranged on elevator cage door is used to receive the infrared ray that said infra-red ray transmitting unit emission comes, and in the zone of elevator door, forms the light curtain;
One signal processing module; It links to each other with the infrared ray receiving element with all infra-red ray transmitting unit; Be used to control said infra-red ray transmitting unit and launch ultrared sequential, and read the induced signal of said infrared ray receiving element, to judge the mode of operation of light curtain.
4. vertical formula elevator light curtain as claimed in claim 3 system; It is characterized in that it also comprises light curtain plate and following light curtain plate, said upward light curtain plate is arranged on the top of elevator cage door; Said infrared ray receiving element is embedded in the light curtain plate; Said light curtain plate down is arranged on the bottom of elevator cage door, and said infra-red ray transmitting unit is embedded in down in the light curtain plate, and said light curtain plate and the said space position of light curtain plate between elevator cage door and hoistway door down of going up.
5. vertical formula elevator light curtain as claimed in claim 4 system is characterized in that, said to go up light curtain plate consistent with the elevator cage door width with the length of said light curtain plate down.
6. a vertical formula elevator light curtain detection method is characterized in that, may further comprise the steps:
The top of elevator cage door is provided with light curtain plate on; The bottom of elevator cage door is provided with light curtain plate; Infra-red ray transmitting unit is embedded in the light curtain plate; The infrared ray receiving element is embedded into down in the light curtain plate, or infra-red ray transmitting unit is embedded into down in the light curtain plate, the infrared ray receiving element is embedded in the light curtain plate;
The control infra-red ray transmitting unit is launched infrared ray in turn with time-sharing format;
Read the signal that cooresponding infrared ray receiving element transmission comes, and judged whether object shading light curtain according to the situation of infrared receiver tube receiving infrared-ray;
If foreign matter shading light curtain arranged, output alarm signal immediately then.
7. vertical formula elevator light curtain detection method as claimed in claim 6 is characterized in that, may further comprise the steps when having judged whether object shading light curtain:
The abnormal alarm limited number of times is set;
Read the signal that the transmission of infrared ray receiving element comes;
Judge that whether same infrared ray receiving element does not receive ultrared number of times greater than said abnormal alarm limited number of times;
If greater than said abnormal alarm limited number of times, output alarm signal immediately then.
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| CN201010150301A CN101811638B (en) | 2010-04-16 | 2010-04-16 | Longitudinal elevator light curtain system and method for detecting longitudinal elevator light curtain |
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| CN201010150301A CN101811638B (en) | 2010-04-16 | 2010-04-16 | Longitudinal elevator light curtain system and method for detecting longitudinal elevator light curtain |
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| CN101811638B true CN101811638B (en) | 2012-10-17 |
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Cited By (1)
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| CN104237962A (en) * | 2013-06-11 | 2014-12-24 | 赛德斯安全与自动化公司 | Method for synchronizing optical units of a photoelectric barrier and light curtain |
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| DE102010026140A1 (en) | 2010-07-05 | 2012-01-05 | Cedes Ag | Monitoring device for securing a driven element |
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| CN111646330B (en) * | 2020-06-15 | 2022-08-02 | 上海三菱电梯有限公司 | Elevator detection device |
| CN113401773A (en) * | 2021-05-21 | 2021-09-17 | 杭州优迈科技有限公司 | Elevator light curtain control method and device and electronic equipment |
| CN113264440B (en) * | 2021-06-04 | 2023-01-06 | 猫岐智能科技（上海）有限公司 | System and method for acquiring light curtain without light area |
| CN115385210A (en) * | 2022-08-25 | 2022-11-25 | 快意电梯股份有限公司 | Method for determining defense area of visual light curtain, detection method, equipment and medium |
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| CN101811638A (en) | 2010-08-25 |
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