CN212460375U

CN212460375U - Data acquisition and diagnosis device of suspension sensor

Info

Publication number: CN212460375U
Application number: CN202021093529.XU
Authority: CN
Inventors: 陈金良
Original assignee: Tongji University
Current assignee: Tongji University
Priority date: 2020-06-15
Filing date: 2020-06-15
Publication date: 2021-02-02
Anticipated expiration: 2030-06-15

Abstract

The utility model relates to a data acquisition and diagnosis device of a suspension sensor, which comprises a 485-TTL level conversion circuit module, a TTL-485 level conversion circuit module, an FPGA, a wireless transmission module and a background host; the input end of the 485-TTL level conversion circuit module is connected with the signal output end of the suspension sensor, the output end of the 485-TTL level conversion circuit module is respectively connected with the input ends of the FPGA and the TTL-485 level conversion circuit module, and the FPGA feeds back the data of the suspension sensor to the background host through the wireless transmission module. Compared with the prior art, the utility model discloses can realize the point-to-point high-speed data transmission of suspension data, monitor the current state of suspension sensor, real-time diagnosis suspension sensor's trouble can also realize completion mark and temperature compensation after the suspension sensor installation is accomplished, with the sensor data of all suspension points through network deployment wireless transmission to backstage host computer, provides data analysis for the running state of whole train.

Description

Data acquisition and diagnosis device of suspension sensor

Technical Field

The utility model belongs to the technical field of suspension sensor failure diagnosis technique and specifically relates to a data acquisition and diagnostic device of suspension sensor is related to.

Background

The suspension sensor provides data such as suspension gaps, acceleration and the like for the maglev train, so that the stable suspension of the train is guaranteed, but in the debugging process of the maglev train, a background needs to acquire information such as gaps, acceleration and the like to analyze and judge the suspension state.

The present solution is that the suspension controller uploads the data of the suspension sensor of gathering through on-vehicle debugging, at first, the CAN bus highest rate is 1Mbps, it is lower to correspond to every suspension controller rate, to the maglev train of high-speed operation, the rate is far away not enough, CAN't realize point-to-point high-speed data transmission, and second, occupy the CPU resource in the controller through on-vehicle debugging net, and the suspension data of uploading is the data after suspension controller filtering process, dynamic data is more smooth-going, be not the true data of sensor, as data analysis, do not have the referential meaning.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a data acquisition and diagnostic device of suspension sensor in order to overcome the defect that above-mentioned prior art exists, can directly feed back the data of suspension sensor to the backstage, need not through the suspension controller.

The purpose of the utility model can be realized through the following technical scheme:

a data acquisition and diagnosis device of a suspension sensor comprises a 485-TTL level conversion circuit module, a TTL-485 level conversion circuit module, an FPGA module, a wireless transmission module and a background host, wherein the input end of the 485-TTL level conversion circuit module is connected with the signal output end of the suspension sensor, the output end of the 485-TTL level conversion circuit module is respectively connected with the input ends of the FPGA module and the TTL-485 level conversion circuit module, the FPGA module is in communication connection with the background host through the wireless transmission module so as to feed back the data of the suspension sensor to the background host, the background host is used for analyzing the data of the suspension sensor, and the output end of the TTL-485 level conversion circuit module is connected with a suspension controller.

Furthermore, the 485-TTL level conversion circuit module is composed of a first level conversion chip and a first connecting resistor.

Further, the TTL-485 level shifter circuit module is composed of a second level shifter chip and a second connecting resistor.

Further, the model of the first level conversion chip is MAX 3485.

Further, the model of the second level conversion chip is MAX 3485.

Furthermore, a TVS diode is connected and arranged between the input end of the 485-TTL level conversion circuit module and the signal output end of the suspension sensor.

Further, the model of the TVS diode is LCDA 15.

Furthermore, a pulse transformer is connected between the input end of the 485-TTL level conversion circuit module and the TVS diode.

Furthermore, the pulse transformer is in a model number of PM 34-1006M.

Further, the wireless transmission module adopts one or more of a WIFI module, a Bluetooth module, a Zigbee module and a mobile 5G module.

Compared with the prior art, the utility model has the advantages of it is following:

(1) according to the technical scheme, 485 signals of the suspension sensor are converted into TTL levels through the 485-TTL level conversion circuit module, then the TTL levels are divided into two paths, one path of the TTL levels is connected into the FPGA, the FPGA is decoded and transmitted to the wireless transmission module, the wireless transmission module is uploaded to the background host, the other path of the 485 signals is converted into 485 signals through the TTL-485 level conversion circuit module again and transmitted to the suspension controller without passing through the suspension controller, the whole structure is simple, and the functions are comprehensive.

(2) According to the technical scheme, point-to-point high-speed data transmission of the suspension data can be realized, the current state of the suspension sensor is monitored, the fault of the suspension sensor is diagnosed in real time, calibration and temperature compensation can be completed after the suspension sensor is installed, the sensor data of all suspension points are wirelessly transmitted to the background host through the networking, and data analysis is provided for the running state of the whole train.

Drawings

To further clarify the above and other advantages and features of various embodiments of the present invention, a more particular description of various embodiments of the invention will be rendered by reference to the appended drawings. It is appreciated that these drawings depict only typical embodiments of the invention and are therefore not to be considered limiting of its scope. Also, the relative positions and sizes of the respective portions shown in the drawings are exemplary, and should not be understood as uniquely determining positional or dimensional relationships between the respective portions.

Fig. 1 is a schematic view of an installation position of a data acquisition and diagnosis device of a suspension sensor according to an embodiment of the present invention;

fig. 2 is a schematic block diagram of a data acquisition and diagnosis device of a suspension sensor according to an embodiment of the present invention;

fig. 3 is a schematic circuit diagram of a 485-TTL level shift circuit module and a TTL-485 level shift circuit module in an embodiment of the present invention;

FIG. 4 is a schematic diagram of the application connection of the data acquisition and diagnosis device of a plurality of suspension sensors to the background host;

in the figure, 100 is a 485-TTL level conversion circuit module, 200 is a TTL-485 level conversion circuit module, 300 is an FPGA module, 400 is a wireless transmission module, and 500 is a background host.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the 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 shall fall within the protection scope of the present invention.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

Referring to fig. 2, a data acquisition and diagnosis system of a suspension sensor includes: the wireless transmission system comprises a 485-TTL level conversion circuit module 100, a TTL-485 level conversion circuit module 200, an FPGA module 300, a wireless transmission module 400 and a background host 500.

Referring to fig. 1, a data acquisition node unit composed of a 485-TTL level conversion circuit module 100, a TTL-485 level conversion circuit module 200, an FPGA module 300, and a wireless transmission module 400 is installed at the bottom of the suspension sensor, connected to the suspension controller through a cable, and communicates with a background host 500 through wireless transmission.

Referring to fig. 3, the 485-TTL level shift circuit module 100 is composed of a level shift chip U2 and a resistor R8, and a TVS diode is disposed at a signal output end of the suspension sensor to protect an input of the 485-TTL level shift circuit module 100, and preferably, the model of the TVS diode is LCDA 15; the output end of the TVS diode is connected to a pulse transformer T1A, preferably, the model of the pulse transformer T1A is PM34-1006M, the output end of the pulse transformer T1A is connected to the input pin of a level conversion chip U2, the TTL level output by the output pin RO of the level conversion chip U2 is divided into two, one path is connected to the input pin of the FPGA, the other path is connected to the TTL-485 level conversion circuit module 200, the TTL-485 level conversion circuit module 200 is composed of a level conversion chip U1, a resistor R5 and a resistor R6, the output pin of the level conversion chip U1 is connected to a suspension controller, and converts the TTL level signal into a 485 signal and transmits the 485 signal to the suspension controller, and preferably, the models of the level conversion chip U1 and the level conversion chip U2 are MAX 3485.

The data feedback of suspension sensor is passed through wireless transmission module 400 by FPGA module 300 and is given back to backstage host computer 500, wireless transmission module 400 adopts the WIFI module, bluetooth module, the Zigbee module, remove one or more in the 5G module, backstage host computer 500 is used for carrying out the analysis to suspension sensor's data, diagnose trouble, refer to fig. 4, a backstage host computer 500 can correspond a plurality of data acquisition nodes through wireless AP, wireless AP passes through networking wireless transmission with the sensor data of all suspension points to the host computer, the running state for whole train provides data analysis.

To sum up, the embodiment of the utility model provides a 485 signals that will suspend the sensor are converted into the TTL level through 485-TTL level conversion circuit module 100, then divide the TTL level into two, will insert FPGA module 300 all the way, decode through FPGA module 300 and forward to wireless transmission module 400, then upload to backstage host computer 500, need not pass through the suspension controller, another way converts 485 signals to the suspension controller through TTL-485 level conversion circuit module 200 once more.

The suspension sensor wireless transmission system can realize point-to-point high-speed data transmission of suspension data, monitor the current state of the suspension sensor, diagnose the fault of the suspension sensor in real time, complete calibration and temperature compensation after the suspension sensor is installed, wirelessly transmit the sensor data of all suspension points to a background host through networking, and provide data analysis for the running state of the whole train.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A data acquisition and diagnosis device of a suspension sensor is characterized by comprising a 485-TTL level conversion circuit module (100), a TTL-485 level conversion circuit module (200), an FPGA module (300), a wireless transmission module (400) and a background host (500), the input end of the 485-TTL level conversion circuit module (100) is connected with the signal output end of the suspension sensor, the output end of the 485-TTL level conversion circuit module (100) is respectively connected with the input ends of the FPGA module (300) and the TTL-485 level conversion circuit module (200), the FPGA module (300) is in communication connection with the background host (500) through the wireless transmission module (400) so as to feed back the data of the suspension sensor to the background host (500), and the output end of the TTL-485 level conversion circuit module (200) is connected with the suspension controller.

2. The data acquisition and diagnosis device for suspension sensor of claim 1, wherein said 485-TTL level shifting circuit module (100) is composed of a first level shifting chip and a first connecting resistor.

3. The data acquisition and diagnosis device for suspension sensor of claim 1, wherein said TTL-485 level shifting circuit module (200) is composed of a second level shifting chip and a second connection resistor.

4. The data acquisition and diagnosis device of claim 2, wherein the first level shift chip has a model of MAX 3485.

5. The data acquisition and diagnostic apparatus of claim 3, wherein said second level shift chip has a model number of MAX 3485.

6. The data acquisition and diagnosis device for the suspension sensor as claimed in claim 1, wherein a TVS diode is further connected between the input terminal of the 485-TTL level shift circuit module (100) and the signal output terminal of the suspension sensor.

7. The data acquisition and diagnostic device of a suspension sensor of claim 6, wherein said TVS diode has a model number of LCDA 15.

8. The data acquisition and diagnosis device for suspension sensor of claim 6, wherein a pulse transformer is further connected between the input terminal of the 485-TTL level conversion circuit module (100) and the TVS diode.

9. The device as claimed in claim 8, wherein the pulse transformer is of the type PM 34-1006M.

10. The data acquisition and diagnosis device for suspension sensors of claim 1, wherein the wireless transmission module (400) is one or more of a WIFI module, a bluetooth module, a Zigbee module, and a mobile 5G module.