CN113236062A

CN113236062A - Non-contact coding sensor for grouped sliding door

Info

Publication number: CN113236062A
Application number: CN202110548097.XA
Authority: CN
Inventors: 刘国清; 张晓宇; 吴桐; 赖新安; 孟举; 杨旭东
Original assignee: Southwest Jiaotong University
Current assignee: Southwest Jiaotong University
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2021-08-10

Abstract

The invention discloses a non-contact coding sensor for a grouped sliding door, which comprises a plurality of non-contact photoelectric sensing switches, a tooth space coding sensing plate and at least one number identification sensing plate, wherein the tooth space coding sensing plate and the number identification sensing plate are respectively corresponding to the plurality of non-contact photoelectric sensing switches; the tooth socket coding induction plate and the serial number identification induction plate are fixed on the grouped sliding door; the tooth space coding induction plate is at least provided with two teeth according to the sliding direction of the grouped sliding door, and the tooth distance is equal to the tooth width; the non-contact photoelectric sensing switch corresponding to the tooth space code sensing plate forms a position identification code according to a signal obtained by the sliding detection of the grouped sliding door; and the non-contact photoelectric sensing switches corresponding to the number identification sensing plate and other non-contact photoelectric sensing switches form a number identification code together according to signals obtained by the sliding detection of the grouped sliding door. The invention adopts a non-contact coding sensor to obtain the codes of any sliding door within the length range of the sliding door.

Description

Non-contact coding sensor for grouped sliding door

Technical Field

The invention relates to the technical field of platform safety doors, in particular to a non-contact coding sensor for a grouped sliding door.

Background

With the rapid development of high-speed rail networks, the 'public transportation' operation mode is proposed, so that an automatic isolation device needs to be arranged between a platform and a track, just like a platform safety door arranged at present in a subway. And nearly 20 types of domestic high-speed rail cars are provided, and each type of car has a corresponding door opening position and door opening distance. The fixed position door opening mode for the subway can not be directly used on intercity railways and high-speed railways obviously. Therefore, at present, the domestic high-speed rail platform is not provided with a platform safety door. One scheme can solve the problem that the sliding doors are made into a certain number of door combination structures capable of being freely grouped, and in the same grouping, the sliding doors are not mechanically connected and can be separated and combined to move freely, so that the door opening requirements of different vehicle types are met. For safety reasons, the sliding doors need to be designed into a passive system, that is, the sliding doors cannot be electrified, which brings difficulty to the identification and position identification of the sliding door numbers in the same group, and the identification signals of the sliding door numbers and the position identification signals are necessary signals for controlling the movement of the sliding doors.

Disclosure of Invention

The invention aims to provide a non-contact coding sensor for a grouped sliding door, which can distinguish the number and the position of a plurality of grouped sliding doors simultaneously through coding so as to solve the problem that the number and the position of the sliding door in a passive state cannot be distinguished.

The technical scheme for realizing the purpose of the invention is as follows:

a non-contact coding sensor for a grouped sliding door comprises a plurality of non-contact photoelectric sensing switches, a tooth space coding sensing plate and at least one number identification sensing plate, wherein the tooth space coding sensing plate and the number identification sensing plate are respectively corresponding to the non-contact photoelectric sensing switches; the tooth socket coding induction plate and the serial number identification induction plate are fixed on the grouped sliding door, the plate surface is vertical to the door surface, and the plate surfaces are mutually parallel up and down; the tooth space coding induction plate is at least provided with two teeth according to the sliding direction of the grouped sliding door, and the tooth distance is equal to the tooth width; the non-contact photoelectric sensing switch corresponding to the tooth space code sensing plate forms a position identification code according to a signal obtained by the sliding detection of the grouped sliding door; and the non-contact photoelectric sensing switches corresponding to the number identification sensing plate and other non-contact photoelectric sensing switches form a number identification code together according to signals obtained by the sliding detection of the grouped sliding door.

The grouped sliding door has the advantages that the grouped sliding door is not electrified, and codes can be obtained by adopting a non-contact coding sensor on any sliding door within the length range of the sliding door. And the sliding door is a moving part, adopts a non-contact coding sensor and has high operation reliability.

Drawings

FIG. 1 is a three-dimensional schematic diagram of the overall structure of a non-contact coding sensor.

Fig. 2 is a three-dimensional schematic diagram of a contactless photoelectric sensing switch.

Fig. 3 is a three-dimensional schematic view of a sensor board secured to a sliding door.

Fig. 4 is a three-dimensional schematic diagram of an embodiment in which the number identification code is a four-bit code.

Fig. 5 is an output waveform of the number recognition code in the embodiment.

Fig. 6 is an output waveform of the position recognition code in the embodiment.

FIG. 7 is a schematic view of the installation of a non-contact encoder sensor.

Labeled as: the device comprises a coding recognizer shell 100, a 1 st non-contact photoelectric sensing switch 101, a 2 nd non-contact photoelectric sensing switch 102, an N-1 st non-contact photoelectric sensing switch 10(N-1) and an Nth non-contact photoelectric sensing switch 10N. The metal plate comprises a tooth space coding metal induction plate 201, a first rectangular coding metal induction plate 202, a second rectangular coding metal plate 203, an Nth rectangular coding metal plate 20(N-1) and an N +1 th rectangular coding metal plate 20N. The signal line 300 is output. The support structure comprises a support structure 1, a sliding door 2, a pulley 3 and a linear motor 4.

Detailed Description

Through linear electric motor driven many sliding doors, every linear electric motor controller needs to distinguish many sliding doors to realize the accurate control to every door. Different sliding door codes and sliding door positions are identified through a non-contact type code sensor, and then code signals are input into a linear motor controller, so that the distinguishing and position identification of multiple doors are realized.

Specific examples of the present invention are given below.

A non-contact coding sensor capable of realizing numbering and position identification for a grouped sliding door comprises a tooth space coding metal induction plate and M rectangular coding metal induction plates, wherein the tooth space coding metal induction plates and the M rectangular coding metal induction plates are arranged perpendicular to a sliding direction at equal intervals and fixed on the grouped sliding door, the tooth space coding metal induction plates are used for position identification, and the rectangular induction plates are used for numbering identification. Wherein tooth's socket metal induction plate is located all metal induction plates the top, and the coding metal induction plate that other M rectangle metal induction plates are perpendicular to the direction of sliding equidistance and arrange. The tooth space coding metal induction plate is provided with N teeth from left to right in a direction parallel to the sliding direction, the tooth pitch and the tooth width are both 5CM, and N is more than or equal to 2; the position code recognizer is a photoelectric sensing switch, when the position code recognizer is close to the plane of the sensing plate, the position code recognizer detects that the tooth heel groove respectively outputs high level and low level or low level and high level corresponding to the photoelectric sensing switch, so that the output code of the non-contact position code sensor is formed, and the position of the safety door is judged by outputting the number of the high level and the low level. The number code recognizer is a photoelectric sensing switch, and when the number code recognizer is close to the plane of the sensing plate, the number code recognizer detects whether the metal plate is high or low or high corresponding to the photoelectric sensing switch respectively, so that the output code of the non-contact number code sensor is formed.

The material of the sensing plate can be any material which can not be penetrated by the incident light of the photoelectric sensing switch.

The noncontact encoder sensor is mainly composed of two parts as shown in fig. 1.

First, the code recognizer is composed of a housing 100 and a plurality of non-contact photoelectric sensing switches. As shown in fig. 2, a 1 st non-contact photoelectric sensor switch 101, a 2 nd non-contact photoelectric sensor switch 102, and the like are arranged in order in the vertical direction. The performance of the photoelectric sensing switch is that when the groove of the sensing switch is provided with a sensing plate plane, the state of the photoelectric switch can be changed. If the original state of the photoelectric sensing switch slot is off when no sensing plate plane exists, the photoelectric sensing switch slot is output at low level and is represented as '0' state by binary system. After the plane of the sensing plate exists, the switch state jumps to be switched on, and the switch state is output at a high level and is represented as a '1' state by binary. And vice versa. The non-contact photoelectric inductive switches have the same performance, namely, the maximum inductive distance of each photoelectric inductive switch is the same. Each photoelectric switch has an output signal, and an output signal line 300 formed by the signal lines of each photoelectric sensing switch outputs a coded signal. The middle plane of the photoelectric induction switch groove and the plane of the induction plate are arranged on the same plane. The number of photo-electric sensing switches used to identify the number is determined by the number of codes required. All '0' encoding that is misjudged prone needs to be removed. Assuming that the number K of codes is needed, the number of photoelectric sensing switches is N. The relationship is as follows:

K＝2^N-1 (1)

second, as shown in fig. 3, the upper limit of the number L of the rectangular sensing plates for identification number is determined by the number of the required photoelectric sensing switches for identification number, and the relationship is:

L≤N (2)

all rectangle tablet groups are a rectangle tablet group on a door, and rectangle tablet group's tablet state has two kinds: presence and absence. As shown in fig. 1 and 3, the rectangular sensing board in the dotted line part is absent, and the rectangular sensing board in the solid line part is present, so the rectangular sensing board group shown in fig. 1 and 3 is: presence- … … -absence-presence. The state of the rectangular sensing plate group on each door is formed by freely combining the existence and nonexistence of each rectangular sensing plate, and the state of the rectangular sensing plate group on each door cannot be the same. The tooth space code induction plates 201 are all 5CM with the same tooth and groove width and are uniformly distributed. The total number of the induction plates is the same as that of the non-contact photoelectric induction switches of the identification coding part. Assuming that the number of the photoelectric sensing switches is N, the number of the coding metal sensing plates is N. When the teeth of the tooth space coding metal induction plate are in the induction range of the photoelectric induction switch, the grooves of the tooth space coding metal induction plate are not in the induction range of the photoelectric induction switch. When a single photo-electric induction switch corresponds to a tooth structure, the output state is a high level, expressed as a binary '1'. When a single photo-electric induction switch corresponds to the slot structure, the output state is a low level, represented as a binary '0'. Assuming that the displacement distance of the gate is X, the number of output high levels is m, and the number of output low levels is n, the relationship between the displacement distance of the gate and the number of output high and low levels is as follows:

X＝5*(m+n)CM (3)

assuming that the number of the sliding doors requiring the maximum code is 15, the number of the photoelectric sensing switches requiring the identification number is 4 according to the formula (1), and the housing 100 and the five photoelectric sensing switches are fixed as a whole to form the identification code part of the non-contact code sensor. In FIG. 3, the states of the rectangular sense plate set are Presence- … … -non-Presence, which constitutes a coded state whose output is represented in binary as 1-1- … … -0-1. Referring to fig. 4, the sensing states of the code identifier for identifying the number of the marshalling gate are a presence-presence structure, which constitutes one of the code states, and the output signal thereof is as shown in fig. 5. Represented in binary as 1111. When the states of the metal coding plates are freely combined, the output of other states is represented by binary, and the following table shows that:

as shown in the above table, there are a total of 15 different codes. After the coded metal induction plates corresponding to the codes are integrally installed on different sliding doors, switching value signals are output through the code identifier to distinguish different sliding doors.

In use, the mounting position is as shown in figure 7. The code recognizer composed of the case 100 and a plurality of non-contact photoelectric sensing switches is installed on the support structure 1, the sliding door 2 with the tooth space code metal sensing plate 201 and the rectangular metal sensing plate 202 performs linear motion at an arbitrary distance by a pulley, and the driving force is a linear motor 4. There are several sliding doors along the straight line direction from the paper surface to the inside, and the rectangular metal induction plates with different combinations are installed on different sliding doors. When the sliding door 2 enters the sensing part of the code recognizer, the output signal line 300 outputs a code signal to the linear motor controller. When the sliding door enters the sensing range of the code recognizer, the code recognizer outputs a code signal and inputs the signal into the linear motor controller, so that the linear motor controller recognizes and controls the corresponding sliding door.

The invention can solve the problem that a plurality of sliding doors in linear motion are difficult to distinguish, and adopts a non-contact mode, so that the sensor has higher operation reliability and longer service life.

Claims

1. A non-contact coding sensor for a grouped sliding door is characterized by comprising a plurality of non-contact photoelectric sensing switches, a tooth space coding sensing plate and at least one number identification sensing plate, wherein the tooth space coding sensing plate and the number identification sensing plate are respectively corresponding to the plurality of non-contact photoelectric sensing switches; the tooth socket coding induction plate and the serial number identification induction plate are fixed on the grouped sliding door, the plate surface is vertical to the door surface, and the plate surfaces are mutually parallel up and down; the tooth space coding induction plate is at least provided with two teeth according to the sliding direction of the grouped sliding door, and the tooth distance is equal to the tooth width; the non-contact photoelectric sensing switch corresponding to the tooth space code sensing plate forms a position identification code according to a signal obtained by the sliding detection of the grouped sliding door; and the non-contact photoelectric sensing switches corresponding to the number identification sensing plate and other non-contact photoelectric sensing switches form a number identification code together according to signals obtained by the sliding detection of the grouped sliding door.