CN102153001A - Elevator absolute floor positioning device - Google Patents

Abstract

The invention relates to an elevator absolute floor positioning device which comprises a floor infrared acquisition unit, a single chip microcomputer and a display screen, wherein the floor infrared acquisition unit comprises infrared baffle plate pairs with number corresponding to the floor number of each floor, an infrared pair pipe frame and two pairs of infrared pair pipes; each infrared baffle plate pair comprises a floor infrared baffle plate and a time sequence infrared baffle plate; the infrared baffle plate pairs of all floors have same structures and are fixed to the side wall of a car passage; and the infrared pair pipe frame is fixed to the lower part of the side wall of a car. The invention has the advantage of accurately and rapidly displaying an absolute floor.

Description

An absolute floor positioning device for an elevator

technical field

The invention relates to an elevator absolute floor positioning device.

technical background

At present, a device used to display the current floor is popular in the market. This device relies on the elevator machine room to collect and control the elevator action signal (up and down running signal) and position signal (up and down leveling signal, up and down forcibly changing) signal) to obtain the current relative floor and running direction through logical operations, and these signals will encounter different difficulties for different elevators. Due to the different mechanical structures of the elevators when they are installed, some elevators can only collect part of the signals, and some even collect signals that are not enough to calculate the current relative floor and running direction. Even if the collected signal can be obtained by logic operation to obtain the floor signal, there is a half-floor delay compared to the actual situation after the signal is processed by the microcontroller and displayed. This delay cannot be displayed correctly in a fast-moving elevator at all, even if In a slow-moving elevator, this delay also loses its meaning. In addition, the floor information obtained is relative floor information because using these signals can only get whether the current stop floor has risen or fallen by one floor relative to the previous stop floor, and then it can be obtained by adding one and subtracting one according to the number of the previous floor. The current floor number and the reference floor number must be obtained by forcing the maximum or minimum value of the floor value when the up-forcing or down-forcing signal is obtained.

Contents of the invention

The technical problem to be solved by the present invention is to provide an elevator absolute floor positioning device capable of accurately and quickly displaying floors.

The technical solution adopted by the present invention to solve its technical problems:

An absolute floor positioning device for an elevator, characterized in that the device is composed of a floor infrared acquisition unit, a single-chip microcomputer and a display screen; the output terminal of the floor infrared collection unit is connected to the input terminal of the single-chip microcomputer, and the output terminal of the single-chip microcomputer is connected to the display screen the input terminal;

The floor infrared acquisition unit is composed of infrared baffle pairs corresponding to the number of floors on each floor, infrared pair tube racks and two pairs of infrared pair tubes; the infrared baffle pairs on each floor have the same structure and are fixed on the car On the side wall of the channel, the infrared pair tube frame is fixed on the lower part of the side wall of the car. When the car stops on a certain floor, the horizontal centerline of the infrared baffle pair on the floor reaches the floor of the floor. The distance d1 is greater than the distance d2 from the horizontal centerline of the infrared pipe rack to the floor of this floor;

The infrared baffle pair includes a floor infrared baffle and a timing infrared baffle, and the floor infrared baffle and the timing infrared baffle are connected through a connecting horizontal plate with holes;

The upper end of the infrared baffle on the floor is provided with 2 rectangular holes for confirming the effective sampling of downlink operation, and one rectangular hole with downward opening for confirmation of uplink operation is provided at its bottom. The top of the hole is provided with 2 rectangular holes for confirming that the uplink operation sampling is effective, and the middle part of the infrared baffle plate of the floor is uniformly equipped with rectangular holes for determining the floor information, and the number n of the rectangular holes for confirming the floor information is determined by the following formula: N=2 ⁿ ; where: n: the number of rectangular holes for confirming the floor information, N: the total number of floors;

On the top of the timing infrared baffle is provided with an upwardly opening rectangular hole that determines the downward operation, and below the upwardly opening rectangular hole are evenly distributed rectangular holes that generate clock pulses, and the rectangular holes that generate clock pulses The number of holes is m, m=n+4-1; where: n is the number of rectangular holes for confirming floor information;

The transverse horizontal centerline of the bottom surface of each rectangular hole on the timing infrared baffle coincides with the centerline of each rectangular hole on the floor infrared baffle; on the side walls of the

The infrared pipe rack includes a floor infrared pipe rack and a timing infrared pipe rack. The floor infrared pipe rack has the same structure as the time sequence infrared pipe rack. "The glyph frame is provided with installation holes for installing infrared emitting tubes and infrared receiving tubes on the axial positions of the two ends of one side of the opening, and the floor infrared pairing tube frame and the timing infrared tube frame are connected through the support; The infrared pair pipe frame is fixed on the side wall of the car through the first installation rod;

The two pairs of infrared tubes are respectively installed in the installation holes of the infrared emitting tube and the receiving tube located in the floor infrared tube rack and the timing infrared tube rack.

The beneficial effect of the invention is that the absolute floor can be displayed accurately and quickly.

Description of drawings

Fig. 1 is the infrared baffle plate pair of the present invention and the installation position schematic diagram of infrared pair pipe rack;

Fig. 2 is a structural schematic diagram of an infrared baffle pair of the present invention (for a 32-storey building, that is, five floor information rectangular holes are arranged on the floor infrared baffle);

Figure 3 is a structural schematic diagram (top view) of the infrared tube rack;

Figure 4 is a schematic diagram of the relative positional relationship between the floor infrared baffle and the rectangular holes opened on the timing infrared baffle (there are 5 floor information rectangular holes on the floor infrared baffle);

Fig. 5 is the distribution situation of all floor information rectangular holes on the floor infrared baffle of the infrared baffle pair of the first floor, and the schematic diagram of the positional relationship with each rectangular hole on the timing infrared baffle;

Fig. 6 is the waveform diagram produced by the infrared baffle pair shown in Fig. 5 after being scanned by the infrared tube pair, wherein: A1 is the floor information pulse generated by the floor infrared baffle, and B1 is the clock generated by the timing infrared baffle pulse;

Fig. 7 is the distribution situation and the relative position schematic diagram of each rectangular hole on the infrared baffle plate used on the second floor;

Fig. 8 is the waveform diagram produced by the infrared baffle pair shown in Fig. 7, wherein A2 and B2 are the waveforms produced by the floor infrared baffle and the timing infrared baffle respectively;

Fig. 9 is a schematic block diagram of the circuit of the present invention.

In Figure 1-8: 1 Infrared pair pipe rack, 2 Infrared pair of baffles, 3 Floor floor, 4 Car passage, 5 Car, 6 Rectangular hole for confirming that downlink sampling is valid, 7 Floor infrared pair pipe rack, 8 Rectangular holes for confirming floor information, 9 Infrared baffles for floors, 10 Rectangular holes for confirming uplink operation sampling is valid, 11 Rectangular holes for confirming uplink operation with downward opening, 12 Connecting horizontal plates, 13 Rectangular holes for generating clock pulses, 14 Timing infrared baffle, 15 Timing infrared tube bracket, 16 Upward opening rectangular hole for confirming downward operation, 17 Support, 18 First installation rod, 19 Second installation rod, 20 Infrared emission tube installation hole, 21 Infrared receiver 22 The center line of each rectangular hole on the floor infrared baffle, 23 The horizontal horizontal center line of the bottom surface of each rectangular hole on the timing infrared baffle, 24 The rectangular hole for the floor information of the first floor, 25 Rectangular hole for the floor information of the second floor.

Detailed ways

The following embodiment is a pair of infrared baffles designed for a building with a total floor number N of 32 floors. Since N=32, it can be seen from the formula N=2 ⁿ that n=5, m=8 (see Fig. 2, Figure 4, Figure 5, Figure 7).

As shown in Figure 1-9, present embodiment is made up of floor infrared acquisition unit, single-chip microcomputer and display screen; The output terminal of described floor infrared acquisition unit is connected the input end of single-chip microcomputer, and the output terminal of described single-chip microcomputer is connected the input end of display screen ;

The floor infrared acquisition unit is made up of infrared baffles corresponding to the number of floors on each floor 2, infrared pair tube frame 1 and two pairs of infrared tubes; the structure of the infrared baffles 2 on each floor is the same, and fixed On the side wall of the car channel 4, the infrared pair tube frame 1 is fixed on the lower part of the side wall of the car 5. When the car stops at a certain floor, the level of the infrared baffle pair 2 of the layer The distance d1 from the centerline to the floor 3 of this floor is greater than the distance d2 from the horizontal centerline of the infrared pair pipe rack 1 to the floor 3 of this floor;

The infrared baffle pair 2 includes a floor infrared baffle 9 and a timing infrared baffle 14, and the floor infrared baffle 9 and the timing infrared baffle 14 are connected through a connecting horizontal plate 12 with holes;

The upper end of the infrared baffle plate 9 on the floor is provided with two rectangular holes 6 that confirm that the downlink sampling is effective, and one rectangular hole 11 that confirms the downward opening of the uplink is provided at its bottom. The top of the rectangular hole 11 of the opening is provided with 2 rectangular holes 10 for confirming that the uplink operation sampling is effective, and the rectangular holes 8 for determining the floor information are evenly distributed in the middle of the floor infrared baffle 9, and the rectangular holes 8 for confirming the floor information The number n is determined by the following formula: N=2 ⁿ ; where: n: the number of rectangular holes for confirming the floor information, N: the total number of floors;

The top of the timing infrared baffle 14 is provided with an upwardly opening rectangular hole 16 that determines the downward movement, and below the upwardly opening rectangular hole 16, there are evenly distributed rectangular holes 13 that generate clock pulses. The number of rectangular holes 13 of the clock pulse is m, m=n+4-1; in the formula: n is the number of rectangular holes for confirming the floor information;

The transverse horizontal centerline 23 of the bottom surface of each rectangular hole on the timing infrared baffle 14 coincides with the centerline 22 of each rectangular hole on the floor infrared baffle 9 (see Figure 4); the infrared baffle pair 2 Be fixed on the side wall of the car channel 4 by the second mounting rod 19;

The infrared pair of pipe racks 1 includes a floor infrared pair of pipe racks 7 and a timing infrared pair of pipe racks 15. The floor infrared pair of pipe racks 7 has the same structure as the timing infrared pair of pipe racks 15, and the timing infrared pair of pipe racks 15 is The "mouth"-shaped frame with the middle opening on the left side is provided with mounting holes 20, 21 for installing infrared emitting tubes and infrared receiving tubes on the axial positions of the two ends of one side of the opening, and the floor infrared pairing tube frame 7 and timing infrared The pair of pipe frames 15 are connected through the support 17; the infrared pair of pipe frames 1 is fixed on the side wall of the car 5 through the first installation rod 18;

The two pairs of infrared tubes are respectively installed in the installation holes 20 and 21 of the infrared emitting tubes and receiving tubes on the floor infrared tube rack 7 and the timing infrared tube rack 15 .

The following takes the infrared baffle pair on the first floor and the second floor as an example to illustrate the floor positioning principle:

(1) When the pair of infrared baffles is the pair of infrared baffles on the first floor (see Figure 2-6):

In Fig. 2, Fig. 4 and Fig. 5, on the floor infrared baffle plate 9, opened a rectangular hole 24 confirming the floor information of the first floor. The infrared baffle 9 is installed on the first layer.

When the infrared tube pair scans the rectangular hole on the infrared baffle pair, the infrared output signal is a high level "1", and when the infrared emission signal is blocked by the infrared baffle, the infrared output signal is a low level "0". When the infrared tube pair scans to a place other than the upper and lower ends of the infrared baffle pair, the infrared output signal is a high level "1".

A1 and B1 in Fig. 6 are the floor information pulse A1 and the clock pulse B1 (from the left to look right).

The sampling and processing process of the single-chip microcomputer is as follows:

1. The car descends from the second floor to the first floor:

When the elevator enters the first floor from the second floor, the single-chip microcomputer first detects that the output signal of the infrared pair tube on the floor is lowered (the infrared emission is blocked by the upper end of the baffle), that is, it changes from "1" to "0" (see Figure 6 A1, viewed from left to right), the single-chip microcomputer confirms that the elevator is running downward; in the subsequent sampling process, the single-chip microcomputer further confirms that the falling edge of the clock pulse (B1 in Figure 6, viewed from left to right) is the sampling At this time, the single-chip microcomputer continues to collect two high-level "1", at this time, it is considered that the sampling is valid, and the single-chip microcomputer continues to continuously collect 5 floor information on the falling edge of the clock pulse. The level information of the rectangular hole is binary "00001" (see A1 in Figure 6), and finally two high-level "1"s were collected continuously (see A1 in Figure 6). To confirm the valid sampling information, when the elevator stops at the first floor, the display screen shows that the current floor is "1" in decimal.

2. When the car runs upwards from the first floor:

The sampling and processing process of the single-chip microcomputer is discussed in the following (2).

(2) When the pair of infrared baffles is the pair of infrared baffles on the second floor (see Figure 7 and Figure 8):

In Fig. 7, a rectangular hole 25 (see Fig. 7 for its position) for confirming the floor information of the second floor has been opened on the floor infrared baffle 9, and the infrared baffle pair 9 is installed on the second floor.

When the car 5 descends from the third floor to the second floor and stops, the waveforms scanned by the infrared tube pair are shown as A2 and B2 in Figure 8 (viewed from left to right), where A2 is the floor information pulse, and B2 for the clock pulse.

The sampling and processing process of the single-chip microcomputer is as follows:

1. The car descends from the third floor to the second floor:

When the elevator enters the second floor from the third floor, the sampling process of the single-chip microcomputer is the same as the sampling process of "the car descends from the second floor to the first floor" in (1) above. The information is "00010" in binary (see A2 in Figure 8), and the display shows that the current floor is "2" in decimal.

2. The car rises from the first floor to the second floor:

When the car 5 runs upwards from the first floor stop position to the second floor stop position, the infrared pair tube pair 1 on the car wall first scans the infrared baffle pair installed on the first floor from bottom to top, and runs When the second floor stops, the infrared tube pair is located under the infrared baffle pair on the second floor, that is to say, in this process, only the infrared baffle pair on the first floor is scanned, but the second floor is not scanned. pair of infrared baffles.

When the car starts to rise from the stop position on the first floor, the single-chip microcomputer first detects that the output signal of the timing infrared pair tube pair changes from high level to low level, that is, from "1" to "0" (B1 in Figure 6, The clock pulse generated by the timing infrared baffle pair installed on the first floor, and it is a pulse viewed from right to left), the single-chip microcomputer confirms that the elevator is running upwards, and in the subsequent sampling process, the single-chip microcomputer further Confirm that the rising edge of the clock pulse (B1 in Figure 6, viewed from right to left) is the sampling moment, the microcontroller then collects two high-level "1", at this time it is considered that the sampling is valid, and the microcontroller continues on the rising edge of the clock pulse The level information of 5 floor information rectangular holes is continuously collected as binary "10000" (see A1 in Figure 6, viewed from right to left) and finally 2 high-level "1"s are continuously collected (see Figure 6 A1 in A1, viewed from right to left) In order to confirm the effective sampling information, when the car stopped on the second floor, the infrared pair tube pair did not collect the infrared baffle pair located on the second floor at this time, then, at this time, the display screen The number of floors displayed needs to be further processed by the single-chip microcomputer as follows: first read the scanned floor level information "10000" in reverse as "00001", then convert it into decimal "1", and finally add "1" on this basis "That is, 1+1=2, the display shows that the current floor number is 2.

From the sampling and processing process of the above-mentioned single-chip microcomputer, it can be seen that when the car is running down, what the infrared pair tube pair collects is the information of the infrared baffle pair in the floor to be displayed; What is collected is the information of the infrared baffle pair on the next floor of the floor to be displayed. The single-chip microcomputer first needs to read the collected binary code in reverse, and then add one to the obtained floor number before displaying.

Claims (1)

1. an elevator absolute floor positioning device is characterized in that said device is made up of floor infrared acquisition unit, single-chip microcomputer and display screen; The input terminal of the display screen; The floor infrared acquisition unit is composed of a pair of infrared baffles (2) corresponding to the number of floors on each floor, an infrared pair tube frame (1) and two pairs of infrared tubes; the pair of infrared baffles (2) on each floor The structure is the same, and fixed on the side wall of the car channel (4), the infrared pair tube frame (1) is fixed on the lower part of the side wall of the car (5), when the car stops at a certain floor, The distance d1 from the horizontal centerline of the infrared baffle pair (2) to the floor (3) of the floor is greater than the distance d1 from the horizontal centerline of the infrared pair tube frame (1) to the floor (3) of the floor distance d2; The pair of infrared baffles (2) includes a floor infrared baffle (9) and a timing infrared baffle (14), and the floor infrared baffle (9) and the timing infrared baffle (14) are plate (12) is connected; On the upper end of the infrared baffle (9) on the floor, there are two rectangular holes (6) for confirming the effective sampling of the downlink operation, and one rectangular hole (11) opening downward for confirmation of the uplink operation is provided at the bottom end , above the downward opening rectangular hole (11), there are two rectangular holes (10) for confirming that the uplink operation sampling is effective, and the middle part of the floor infrared baffle (9) is evenly distributed with the Rectangular holes (8), the number n of rectangular holes (8) for confirming floor information is determined by the following formula: N=2 ⁿ ; where: n: the number of rectangular holes for confirming floor information, N: the total number of floors; On the top of the timing infrared baffle (14) there is an upwardly opening rectangular hole (16) that determines the downward operation, and below the upwardly opening rectangular hole (16) are evenly distributed rectangular clock pulse generating Holes (13), the number of rectangular holes (13) for generating clock pulses is m, m=n+4-1; where: n is the number of rectangular holes for confirming floor information; The transverse horizontal centerline (23) of the bottom surface (23) of each rectangular hole on the timing infrared baffle (14) coincides with the centerline (22) of each rectangular hole on the floor infrared baffle (9); The infrared baffle pair (2) is fixed on the side wall of the car channel (4) through the second installation rod (19); The infrared pipe rack (1) includes a floor infrared pipe rack (7) and a timing infrared pipe rack (15), and the floor infrared pipe rack (7) has the same structure as the timing infrared pipe rack (15) , the time-sequence infrared pair tube frame (15) is a "mouth"-shaped frame with an opening in the middle of the left side, and installation holes (20, 20, 21), the floor infrared pipe rack (7) and the timing infrared pipe rack (15) are connected through the support (17); the infrared pipe rack (1) is fixed on the On the side wall of the car (5); The two pairs of infrared tubes are respectively installed in the installation holes (20, 21) of the infrared emitting tubes and receiving tubes located in the floor infrared tube rack (7) and the timing infrared tube rack (15).

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