CN106809717B - A kind of supporting safety device of escalator - Google Patents

Abstract

The invention discloses a supporting safety device for an escalator, which specifically includes a photoelectric sensor array for detecting the body posture of passengers (whether there is an abnormal posture such as a fall), and a pressure sensor for detecting the pressure in the gap between steps and between steps, and between steps and aprons Array, the magnetic sensor for detecting the running speed and direction of the elevator, the first judging controller based on the output of the pressure sensor array, the second judging controller based on the output of the photoelectric sensor array and the output of the magnetic sensor, used to issue warnings to passengers Warning device array, emergency stop device for elevator emergency stop. The invention has the function of detecting the unsafe and unexpected behavior of passengers and the abnormal operation of the elevator, is comprehensive in consideration, and can effectively prevent the occurrence of safety accidents.

Description

An escalator matching safety device

technical field

The invention relates to the field of public facilities, in particular to a safety device for an escalator.

Background technique

As a public facility, the escalator has changed people's way of life and has become an important symbol of modern material civilization, which greatly facilitates people's lives, especially for people with walking disabilities. It is a great invention. With the further deepening of my country's urbanization process, a series of public transportation infrastructure projects have been launched one after another, and escalators, as an indispensable part of these facilities, will become more and more common. But people should also clearly realize that escalators also bring many safety hazards. The main causes of safety accidents are as follows:

(1) Accidentally fall while taking the escalator, but the escalator is still running;

(2) toes caught in the gap between the elevator steps and the apron (side fender);

(3) Toes sink into the joint between the upper and lower steps;

(4) The speed or direction of the elevator changes suddenly.

Contents of the invention

In view of the above-mentioned potential safety hazards, the present invention provides a matching safety device for an escalator.

The technical scheme adopted in the present invention is as follows: a supporting safety device for an escalator, including a photoelectric sensor array for detecting the passenger's body posture (whether there is an abnormal posture such as a fall) respectively, and detecting steps and between steps, steps and apron boards The pressure sensor array for the gap pressure, the magnetic sensor for detecting the running speed and direction of the elevator, the first judgment controller for judging according to the output of the pressure sensor array, and the second judging controller for the output of the photoelectric sensor array and the output of the magnetic sensor for An array of warning devices to warn passengers, an emergency stop device for an emergency stop of an elevator.

Further, the photoelectric sensor array has a plurality of units, which are arranged at intervals along the direction of the escalator, and each unit is installed on the apron boards on both sides of the escalator. There are two groups of photoelectric sensors in one unit, and the output of the sensor array is transmitted to the second Two determine the controller.

Further, the pressure sensor array has a plurality of units in total, and each unit is composed of a plurality of pressure sensors installed at the edge of the lower step near the upper step of the upward escalator and at a position opposite to the step on the apron plate, and the sensor array outputs Pass it to the first judgment controller.

Further, the magnetic sensor is composed of a plurality of magnetic strips with different magnetic strengths installed on the back of the steps and a magnetic sensitive diode circuit installed at the entrance of the escalator, and the output of the sensor is sent to the second judging controller.

Further, the first judging controller is installed at the entrance of the escalator, and is respectively connected with the pressure sensor array and the warning device array, and is used to judge the output of the pressure sensor array, and if the output at a certain position is abnormal, the warning device at that position will be activated .

Further, the second judging controller is also connected with the photoelectric sensor array, the magnetic sensor, and the emergency stop device, and is used for judging the output of the photoelectric sensor array and the magnetic sensor output, and the emergency stop device will be activated if an abnormality occurs.

Further, the warning device arrays are installed on the apron plates corresponding to the pressure sensor units.

Further, the elevator emergency stop device is installed at the entrance of the escalator.

The beneficial effects of the present invention are as follows: the supporting safety device for the escalator of the present invention adopts a variety of sensors to detect various possible safety hazards, is well considered, has a relatively low misjudgment rate, and has a warning device and an emergency stop device, It can effectively prevent the occurrence of various escalator safety accidents and ensure the safety of people's lives.

Description of drawings

Figure 1 is a schematic diagram of the installation position and work of the photoelectric sensor array;

Fig. 2 is a schematic diagram of the installation positions of the pressure sensor array and the warning device array;

Figure 3 is a schematic diagram of the installation position and work of the magnetic sensor;

Fig. 4 is a warning control flowchart;

Fig. 5 is a flow chart of emergency stop control;

In the figure: photoelectric sensor array 1, pressure sensor array 2, warning device array 3, magnetic strip 4 with increasing magnetic strength, and magnetic sensitive diode circuit 5.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

As shown in FIG. 1 , the photoelectric sensor array 1 has a plurality of units arranged at intervals along the direction of the escalator. Each unit is installed on the apron plates on both sides of the escalator. There are two groups of photoelectric sensors in each unit. The output of the sensor array is sent to the second judgment controller. The output of the photoelectric sensor is determined by whether the laser generated by one side is received by the other side (that is, whether there is an object blocking the optical path). Under normal circumstances, the upper and lower sets of sensors in the same unit either detect the presence of objects on the optical path (that is, there are passengers currently in the unit) or neither detect the existence of objects in the optical path (that is, there are no passengers in the unit at present). location). When a passenger accidentally falls down, the upper sensor in a certain unit will not detect that there is an object on the optical path, while the lower sensor still detects that there is an object on the optical path. At this time, the output of the photoelectric sensor will be different from the normal situation.

As shown in FIG. 2 , the pressure sensor array 2 has a plurality of units, and each unit is composed of a plurality of pressure sensors installed on the edge of the lower step near the upper step of the upward escalator and on the apron plate at a position opposite to the step. The output of the sensor array is sent to the first judgment controller. When the passenger's foot steps on or presses on the position of the pressure sensor, different outputs will be generated.

As shown in FIG. 3 , the magnetic sensor is composed of magnetic strips 4 with different magnetic strengths installed on the back of the steps and a magnetic sensitive diode circuit 5 installed at the entrance of the escalator. The same number of multiple magnetic strips 4 with increasing magnetic strength are installed on the back of each step. Therefore, whether it is an uplink or a downlink elevator, under normal circumstances, the magnetic field where the magnetic sensitive diode circuit 5 is located changes periodically and the strength changes incrementally or gradually within a cycle, and the magnetic sensitive diode circuit 5 can output signals according to the change of the magnetic field to the second judgment controller. When the elevator running speed changes suddenly or the direction changes, the frequency of the magnetic field change will change or the change law of the magnetic field strength within one cycle will be opposite to the normal situation. Therefore, the signal output of the magnetic sensitive diode circuit 5 will change.

The first judging controller is installed at the entrance of the escalator, and is connected with the pressure sensor array 2 and the warning device array 3 through a circuit. The output of the pressure sensor array is detected, and if the output of the pressure sensor unit at a certain position reaches the set pressure threshold, the warning device at that position will be activated. The setting of the pressure threshold should consider minimizing misjudgment, and certain experiments can be carried out to determine the pressure threshold.

The second judging controller is installed at the entrance of the escalator, and is connected with the photoelectric sensor array, magnetic sensor, and emergency stop device through a circuit, and can judge whether a passenger has fallen according to the output of the photoelectric sensor array, and can judge whether the elevator has fallen according to the output of the above-mentioned magnetic sensor. Whether the running speed or direction changes suddenly, once the above situation occurs, the emergency stop device will be activated.

As shown in Fig. 2 and Fig. 4, three warning device arrays are installed on the apron plates corresponding to each pressure sensor unit. When the warning device at a certain position receives the activation signal of the first judging controller, it will broadcast a voice to remind passengers to pay attention to the safety of their feet. The emergency stop device will stop the operation of the escalator after receiving the activation signal from the second judging controller, so as to avoid safety accidents, as shown in FIG. 5 .

The first judging controller can be a product of the WS1521 model, but not limited thereto; the second judging controller can be a product of the WS1521 model, but not limited thereto; the warning device is a MAX9812 voice module circuit. The emergency stop device is a self-contained emergency stop system inside the elevator.

Claims (8)

1. A kind of 1. supporting safety device of escalator, it is characterised in that the light including being respectively used to detection passenger's body posture Electric transducer array, is detected between step and step, the array of pressure sensors of step and skirt panel clearance pressure, detection elevator fortune Scanning frequency degree and the magnetic sensor in direction, first judged according to array of pressure sensors output judge controller, according to Photosensor arrays export and magnetic sensor exports second judged and judges controller, for giving a warning to passenger Warning device array, the emergency stop device for elevator emergency stop.
2. 2. the supporting safety device of escalator according to claim 1, it is characterised in that the photosensor arrays Multiple units are shared, are intervally arranged along staircase direction, each unit is installed on the skirt panel of staircase both sides, in a unit There are two groups of photoelectric sensors, sensor array output is transmitted to the second judgement controller.
3. 3. the supporting safety device of escalator according to claim 1, it is characterised in that the array of pressure sensors Share multiple units, each unit by installed in for uplink staircase close to the lower step edge of upper step and skirt panel Upper and step relative position multiple pressure sensors form, and sensor array output is transmitted to the first judgement controller.
4. 4. the supporting safety device of escalator according to claim 1, it is characterised in that the magnetic sensor is by pacifying A plurality of magnetic stripe mounted in the different magnetic intensities at the step back side and the magnetodiode circuit installed in staircase inlet are formed, the biography Sensor output is transmitted to the second judgement controller.
5. 5. the supporting safety device of escalator according to claim 1, it is characterised in that described first judges controller Installed in staircase entrance, it is connected respectively with array of pressure sensors, warning device array, for judging array of pressure sensors Output, if the output abnormality at a certain position will activate the warning device of the position.
6. 6. the supporting safety device of escalator according to claim 1, it is characterised in that described second judges controller Also it is connected with photosensor arrays, magnetic sensor, emergency stop device, for judging photosensor arrays output and magnetic biography Sensor exports, and emergency stop device will be activated by exception occur.
7. 7. the supporting safety device of escalator according to claim 1, it is characterised in that the warning device array is each On skirt panel corresponding with each pressure sensor unit.
8. 8. the supporting safety device of escalator according to claim 1, it is characterised in that the elevator emergency stop device peace Mounted in staircase inlet.