CN218765379U - Portable subway riding environment comprehensive test device - Google Patents

Abstract

The utility model discloses a portable subway environment comprehensive testing device by bus, including ground equipment and mobile unit, ground equipment includes a plurality of ground location beacons of installing along the train orbit, mobile unit includes test host computer, external sensor and host computer, the test host computer includes laser and gravity positioner, power module, vibration sensor, acceleration sensor and comprehensive main control module, external sensor, host computer, power module, vibration sensor and acceleration sensor all are connected with comprehensive main control module, external sensor includes location beacon sensor, baroceptor, temperature and humidity sensor, particulate matter sensor, carbon dioxide sensor and noise sensor; the utility model discloses under testing arrangement's the assistance, subway operator can be very convenient gather a large amount of valuable field data, has created strong support condition for the management promotes.

Description

Portable subway riding environment comprehensive test device

Technical Field

The utility model relates to a testing arrangement especially relates to a portable subway environment integrated test device by bus belongs to rail transit operation management technical field.

Background

Along with the continuous improvement of people's standard of living, also more and more high to the requirement of trip comfort level. As the main force of urban internal traffic, urban rail traffic is also continuously optimized and improved in service quality, and iron operators in various regions are actively developing satisfaction improvement and optimization activities. Subway operation aims at providing safe, efficient and comfortable travel service for passengers. Whether the subway is safe and comfortable when people go out by taking the subway is a core problem faced by each subway operator. It is generally considered that the main factors affecting the comfort of passengers during riding are train shaking (acceleration, vibration), air pressure change, environmental noise, carbon dioxide concentration, air dust content, environmental temperature and humidity, and the like. The factors form the basic understanding of the satisfaction degree of the passenger on the subway service through the perception of the human body. The factors are tested and measured, the obtained data are recorded and analyzed through a technical management means, and the operation strategy is adjusted in the process of equipment operation and maintenance in a targeted manner, so that the method is an important means for improving the comfort level of passengers and the quality of operation service.

The Chinese invention patent application with the application number of 201710214443.4 discloses a subway train operation service quality detection device and a method, wherein the device comprises a detection unit and an inertia measurement module, wherein the detection unit is used for acquiring train body operation attitude parameters, noise, temperature, humidity, air quality and mobile phone signal intensity in a carriage; the detection host is in communication connection with the detection unit and is used for acquiring data acquired by the detection unit; the processing unit is in communication connection with the detection host and is used for receiving and storing data transmitted by the detection host, calculating position parameters of the subway line where the detection device is located according to the data, evaluating single indexes and comprehensive indexes of the operation service quality of the subway train, performing data comparison analysis, data trend analysis, analysis according to spatial positions, correlation analysis with line equipment and subway line track damage analysis. The invention improves the space positioning precision of the analysis and evaluation of the subway train operation service quality and the objectivity of the analysis result, and provides a more convenient technical means for the management and supervision of the subway train service quality.

When the detection device and the method are adopted to carry out the test of the environmental indexes, the behaviors of wiring, temporary configuration change and the like are often required to be carried out inside and outside a subway train, the preparation time is long, and special trains (without passenger trains) are sometimes required to be carried out for testing, so that the cost of test activities is high. In addition, the special train and the common passenger train have differences in many environmental factors (such as noise, dust in public areas and carbon dioxide concentration), so that relevant data in the actual operation service process are not easy to obtain. If the train is not temporarily modified and wired, the position of the train in the tunnel cannot be obtained, so that the availability and the value of the test data are severely limited.

In summary, although the testing tool is mature, a series of problems still exist, such as tedious process, high labor cost, high cost, influence on passenger experience, complex positioning and measurement, and poor data availability. In order to conveniently and frequently carry out tests during operation to acquire relevant data and not influence normal operation service order, a set of portable subway riding environment comprehensive test device needs to be developed in a targeted manner.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of above-mentioned prior art, the utility model provides a portable subway environment integrated test device by bus.

The utility model adopts the technical proposal that: the portable subway riding environment comprehensive testing device comprises ground equipment and vehicle-mounted equipment, wherein the ground equipment comprises a plurality of ground positioning beacons which are installed along the running track of a train, the vehicle-mounted equipment comprises a testing host, a GPS module, an external sensor and an upper computer, the testing host comprises a laser and gravity positioning device, a power supply module, a vibration sensor, an acceleration sensor and a comprehensive main control module, the external sensor, the upper computer, the GPS module, the power supply module, the vibration sensor and the acceleration sensor are all connected with the comprehensive main control module, and the external sensor comprises a positioning beacon sensor and other data acquisition sensors; the device need not to lay wire to the train and reforms transform, does not insert train control circuit, does not need the train to provide the power, has integrateed chargeable source in it, need not external power source support when the test, avoids getting the interference of electric wiring operation to the operation service, does not influence train operation safety. The positioning information of the data collected by the positioning beacon sensor is provided by the positioning beacon sensor through identifying a ground positioning beacon (a light source capable of emitting modulated light and being reconstructed by replacing a light source driver on the existing subway illumination LED lamp) installed in a subway tunnel section and a displacement prediction algorithm. Under the cooperation of the interval beacons, accurate positioning can be achieved in the train, and data collected by other sensors can be combined with the position of the train to provide analysis. Between adjacent ground positioning beacons, the comprehensive main control module calculates the train position through relevant data such as acceleration and the like until the next beacon is scanned, and then positioning correction is carried out, so that continuous positioning in the acquisition process is realized. The positioning beacon sensor and the acceleration sensor supplement each other, so that the high precision of transmission and the high reliability of a system are ensured, the positioning precision is higher, and the positioning data is reliable. The source position of the detection data of the testing device is accurate.

The upper computer is a special computer provided with acquisition control software and is used for configuring the operating parameters of the test host and realizing the functions of displaying, acquiring, storing, analyzing and the like of data acquired by the test host.

Furthermore, the power supply module comprises a VRLA battery and a power supply management module connected with the VRLA battery, and in the operation process of the device, the built-in VRLA battery provides electric energy, and the power supply management module provides stable power supply for each sensor, a sensor (excitation) auxiliary circuit, a data acquisition system, a comprehensive main control module and the like. The built-in power supply realizes that the testing device can obtain the power supply without being connected with any control circuit of the train, and simultaneously ensures the lightness, the flexibility and the reliability of the whole device.

The external sensor also comprises an air pressure sensor, a temperature and humidity sensor, a particulate matter sensor, a carbon dioxide sensor and a noise sensor, the accurate collection of influence factors such as train shaking (acceleration, vibration), air pressure change, environmental noise, carbon dioxide concentration, dust content, temperature and humidity is realized by arranging corresponding sensors and sensor (excitation) auxiliary circuits, the external sensor is arranged in a carriage and is 1m-1.8m away from the bottom plate of the carriage during field test, a positioning beacon sensor is adsorbed on window glass at two sides of the subway carriage through a sucking disc, the installation of the external sensor embodies the convenience of mounting and dismounting the whole set of equipment, the sensors are fixed at the parts (1 m-1.8m are obtained by measuring and calculating the average height of a human body) easy to perceive by the human body, and the obtained test data are used for evaluating the test environment to be more convincing; the test data of the external sensor is combined with an algorithm developed autonomously, so that the riding environment of passengers can be better evaluated. Still connect on the test host computer and be provided with laser and gravity positioner, in order to make the acceleration sensor measuring axis of above-mentioned design device keep perpendicular with train traffic direction, parallel and self keep the level, laser and gravity positioner utilize the optics principle to realize the alignment of testing arrangement and train direction of advance, utilize gravity positioner to make acceleration sensor installation level, use the mounted position of laser and gravity positioner calibration test host computer, can effectively reduce acceleration sensor's steady state error, portable equipment's convenience has greatly been strengthened, realize the swift installation location in scene.

Further, the test host computer still includes data acquisition system, data acquisition system includes high-speed acquisition system and low-speed acquisition system, baroceptor, vibration sensor and acceleration sensor all are connected with synthesizing the host system through high-speed acquisition system, temperature and humidity sensor, particulate matter sensor, carbon dioxide sensor and noise sensor all are connected with synthesizing the host system through low-speed acquisition system, carry out data acquisition to the index of quick and slow speed change respectively, high-efficient utilization equipment performance and data storage space.

Furthermore, a power supply and signal conditioning module is arranged between the air pressure sensor, the vibration sensor and the acceleration sensor and the high-speed acquisition system for carrying out power supply and signal modulation.

Further, the vibration sensor is a piezoelectric IEPE vibration sensor, and the acceleration sensor is a MEMS acceleration sensor.

Furthermore, the test host further comprises an operation panel, and the operation panel is integrated with: the device comprises a liquid crystal display screen, a power switch, a power indicator, a charging switch, a charging indicator, an external power interface, an upper computer interface, an external sensor interface, a sensor control switch, a sensor operation indicator, a debugging interface, an amplification factor selection switch and a channel switch. The liquid crystal display screen on the host operating panel can display current time information, positioning information, power supply information, reference speed information, running fault information and the like, a debugging interface is reserved, the requirement of continuous updating of later-stage programs can be met, and the requirement of a changeable operating environment can be met.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has the characteristics of portability, rapidness, no influence on operation and passenger experience, convenient test, accurate positioning, no accumulated error and strong data usability; the system can perform real-time test during the operation period, can frequently perform test during the operation period to acquire related data, and does not influence the normal operation service order; integrating multiple sensors, collecting simultaneously, and performing comprehensive processing, sorting and evaluation according to data collected by multiple sensors; the continuous acquisition data of all relevant indexes can be obtained through one-time test, the train does not need to be subjected to wiring transformation in the test process, the train is not connected into a train control loop at all, displacement and a power supply can be obtained without being connected with any internal part of the train, the data acquisition can be based on the actual operation of the train and can be acquired at any time, and the obtained data has strong reference. The device uses the tunnel interval light beacon positioning technology which is independently researched and developed to realize the synchronous recording of the position information, greatly enhances the usability of the portable equipment for acquiring data, has no accumulated displacement error of the conventional acceleration positioning, and can be used in an overhead section and a tunnel section.

The utility model discloses a test data and evaluation conclusion can provide modified direction and management optimization suggestion for line renovation maintenance, vehicle walking portion dimension guarantor, air conditioner maintenance, environmental control system operational mode, filter pulp change cycle, train control etc. provide support for operation quality of service's continuation promotion.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic layout diagram of the present invention.

Fig. 2 is a schematic view of the operation panel of the present invention.

In the figure: the system comprises a ground device 1, a vehicle-mounted device 2, a test host 3, an operation panel 4, a liquid crystal display 5, a power switch 6, a power indicator 7, a charging switch 8, a charging indicator 9, an external power interface 10, an upper computer interface 11, an external sensor interface 12, a sensor control switch 13, a sensor operation indicator 14, a debugging interface 15, an amplification factor selection switch 16 and a channel switch 17.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be construed broadly and include, for example, fixed connections, detachable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

In addition, in the description of the present invention, unless otherwise specified, the terms "plurality", and "plural groups" mean two or more, and the terms "a plurality", and "a plurality" mean one or more.

Example 1

As shown in fig. 1: this portable subway environment integrated test device by bus, including ground equipment 1 and mobile unit 2, ground equipment 1 includes a plurality of ground location beacons along the installation of train orbit, mobile unit 2 includes test host 3, GPS module, external sensor and host computer, test host 3 includes laser and gravity positioner, power module, vibration sensor, acceleration sensor and synthesizes host system, external sensor, host computer, GPS module, power module, vibration sensor and acceleration sensor all are connected with synthesizing host system, and the GPS module is used for under the daytime condition, and the train cooperates the location when going to the train track beyond the tunnel, external sensor includes location beacon sensor. The vibration sensor adopts a piezoelectric IEPE vibration sensor, and the acceleration sensor adopts an MEMS acceleration sensor. Wherein:

the power module includes a VRLA battery and a power management module coupled thereto.

The external sensor further comprises an air pressure sensor, a temperature and humidity sensor, a particulate matter sensor, a carbon dioxide sensor and a noise sensor, the external sensor is installed in the carriage and is 1m-1.8m away from the bottom plate of the carriage, the positioning beacon sensor is adsorbed on window glass on two sides of the subway through a sucker, and the adsorption height is about 1.61 m.

The test host 3 further comprises a data acquisition system and an operation panel 4, the data acquisition system comprises a high-speed acquisition system with a sampling rate of more than or equal to 1000sa/s and a low-speed acquisition system with a sampling rate of more than or equal to 5sa/s, the air pressure sensor, the vibration sensor and the acceleration sensor are all connected with the comprehensive main control module through the high-speed acquisition system, and a power supply and a signal conditioning module are arranged between the air pressure sensor, the vibration sensor and the acceleration sensor and the high-speed acquisition system; the temperature and humidity sensor, the particulate matter sensor, the carbon dioxide sensor and the noise sensor are connected with the comprehensive main control module through the low-speed acquisition system. As shown in fig. 2, the operation panel 4 has integrated thereon: the device comprises a liquid crystal display screen 5, a power switch 6, a power indicator 7, a charging switch 8, a charging indicator 9, an external power interface 10, an upper computer interface 11, an external sensor interface 12, a sensor control switch 13, a sensor operation indicator 14, a debugging interface 15, an amplification factor selection switch 16 and a channel switch 17. When in use, the positioning beacon sensor 1 and the positioning beacon sensor 2 in the figure 1 are correspondingly arranged on the windows at two sides of a train carriage.

Acquiring field data: placing a test host of the portable subway riding environment comprehensive test device on the ground at a specified position of a subway carriage, turning on a laser and gravity positioning device, and adjusting the installation of the test host to ensure that a measurement axis of an acceleration sensor in the host is parallel and vertical to the running direction of a train and the installation of the acceleration sensor is kept horizontal; after the matched external sensor is installed to a specified position, the external sensor is accessed to the test host through a corresponding sensor interface on the operation panel of the test host; electrifying the upper computer and accessing the upper computer to the test host through a special data interface; respectively starting a test host and an upper computer power supply, and entering a state to be acquired after the test host is initialized through self-checking, preheating and the like; the system configuration is completed by selecting corresponding sensors and sensor acquisition channels and amplifying ratios, and the test host is controlled to enter an acquisition state by the upper computer.

And in the acquisition process, the upper computer special software displays the numerical value and the change trend oscillogram of the acquired data in real time. The acquired data is synchronously stored in an upper computer memory, and after the acquisition is finished, objective evaluation and quantification results can be obtained through the stored data through a software algorithm.

In the operation process of the acquisition system, a built-in VRLA battery provides electric energy, and a stable power supply is provided for each sensor, the sensor auxiliary circuit, the data acquisition system, the controller and the like through the power management module. The method includes the steps that a positioning beacon sensor outside a testing host scans an optical beacon installed in a subway tunnel, and accurate positioning is achieved; between adjacent beacons, the train position is calculated through related data such as speed, acceleration and the like until the next beacon is scanned, positioning correction is carried out, and continuous positioning in the acquisition process is achieved.

The present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit and scope of the present invention.

Claims (7)

1. Portable subway environment integrated test device by bus, its characterized in that: including ground equipment (1) and mobile unit (2), ground equipment (1) is including a plurality of ground location beacons along the installation of train orbit, mobile unit (2) is including test host computer (3), GPS module, external sensor and host computer, test host computer (3) are including laser and gravity positioner, power module, vibration sensor, acceleration sensor and synthesize host system, external sensor, host computer, GPS module, power module, vibration sensor and acceleration sensor all are connected with synthesizing host system, external sensor includes the location beacon sensor.

2. The portable subway riding environment comprehensive testing device according to claim 1, characterized in that: the power module comprises a VRLA battery and a power management module connected with the VRLA battery.

3. A portable subway riding environment comprehensive test device according to claim 1 or 2, characterized in that: the external sensor further comprises an air pressure sensor, a temperature and humidity sensor, a particulate matter sensor, a carbon dioxide sensor and a noise sensor, the external sensor is installed in the carriage and is 1m-1.8m away from the ground of the carriage, and the positioning beacon sensors are adsorbed on window glass on two sides of the train through suckers.

4. A portable subway riding environment comprehensive testing device according to claim 3, wherein: the test host (3) further comprises a data acquisition system, the data acquisition system comprises a high-speed acquisition system and a low-speed acquisition system, the air pressure sensor, the vibration sensor and the acceleration sensor are connected with the comprehensive main control module through the high-speed acquisition system, and the temperature and humidity sensor, the particulate matter sensor, the carbon dioxide sensor and the noise sensor are connected with the comprehensive main control module through the low-speed acquisition system.

5. A portable subway riding environment comprehensive test device according to claim 4, characterized in that: and a power supply and a signal conditioning module are arranged among the air pressure sensor, the vibration sensor and the acceleration sensor and the high-speed acquisition system.

6. A portable subway riding environment comprehensive test device according to claim 5, characterized in that: the vibration sensor is a piezoelectric IEPE vibration sensor, and the acceleration sensor is an MEMS acceleration sensor.

7. A portable subway riding environment comprehensive test device according to claim 6, characterized in that: the test host (3) further comprises an operation panel (4), wherein the operation panel (4) is integrated with: the device comprises a liquid crystal display screen (5), a power switch (6), a power indicator (7), a charging switch (8), a charging indicator (9), an external power interface (10), an upper computer interface (11), an external sensor interface (12), a sensor control switch (13), a sensor operation indicator (14), a debugging interface (15), an amplification factor selection switch (16) and a channel switch (17).

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