CN113060180A - Railway freight car bearing temperature safety monitoring system - Google Patents
Railway freight car bearing temperature safety monitoring system Download PDFInfo
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- CN113060180A CN113060180A CN202110459970.8A CN202110459970A CN113060180A CN 113060180 A CN113060180 A CN 113060180A CN 202110459970 A CN202110459970 A CN 202110459970A CN 113060180 A CN113060180 A CN 113060180A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
- B61K9/04—Detectors for indicating the overheating of axle bearings and the like, e.g. associated with the brake system for applying the brakes in case of a fault
- B61K9/06—Detectors for indicating the overheating of axle bearings and the like, e.g. associated with the brake system for applying the brakes in case of a fault by detecting or indicating heat radiation from overheated axles
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Abstract
The invention discloses a bearing temperature safety monitoring system of a railway wagon, relating to the technical field of railway wagon safety monitoring, the temperature, the environment temperature and the absolute temperature of the bearing of the railway wagon are obtained through the data acquisition module, and the data acquired by the data acquisition module is sent to the data analysis module, the data analysis module acquires the bearing temperature rise of the railway wagon, the temperature rise coefficient and the axle temperature coefficient of the bearing, the data acquired by the data analysis module is sent to the acquisition management module, and the acquisition management module can acquire the bearing temperature rise coefficient and the axle temperature coefficient of the railway wagon according to the actual condition of the bearing of the railway wagon, adjusting the data acquisition frequency of the data acquisition module and the information output frequency of the data transmission module, therefore, the effective monitoring of the bearing temperature of the railway wagon is ensured, the energy consumption of the data acquisition module and the data transmission module is reduced, and the service lives of the data acquisition module and the data transmission module are greatly prolonged.
Description
Technical Field
The invention belongs to the technical field of safety monitoring of rail wagons, and particularly relates to a system for monitoring the temperature safety of a bearing of a rail wagon.
Background
In the running process of a railway vehicle, if the inside of a bearing is damaged or the outside of the bearing is unreasonably stressed, the bearing can be subjected to faults such as excessive abrasion or damage, clamping stagnation and the like, and if the faults of the bearing are not timely warned, serious train safety accidents such as hot shaft cutting and the like can be finally caused. The existing railway freight car adopts an infrared technology to carry out non-contact detection on the axle temperature of a train and timely sends out warning on overhigh axle temperature.
The patent document with the publication number of CN106627658A discloses an axle temperature alarm system for a railway wagon, which comprises an axle temperature alarm module, an electronic tag module and a wireless transmission module; the axle temperature alarm module is arranged on a railway wagon running gear and is used for respectively transmitting the collected temperature information of the vehicle bearing to the electronic tag module and the wireless transmission module; the electronic tag module processes the received bearing temperature information and transmits the processed information to the ground intelligent car number tracking device, and the intelligent car number tracking device transmits the processed information to the existing infrared shaft temperature detection system; and the wireless transmission module processes and displays the received bearing temperature information. The invention can be used for carrying out on-line monitoring on the axle temperature of the railway freight car in China, improves the transportation safety, reduces misinformation and improves the transportation quality.
In the prior art, in the process of detecting the bearing of the railway wagon, the detection frequency can not be automatically adjusted according to actual requirements, so that unnecessary energy consumption is caused in the process of detecting the bearing of the railway wagon, a power supply is required to be frequently replaced at a detection terminal, and the railway wagon bearing temperature safety monitoring system is provided for solving the problems.
Disclosure of Invention
The invention aims to provide a railway wagon bearing temperature safety monitoring system.
The technical problem to be solved by the invention is as follows: how to enable the temperature monitoring process of the bearing of the railway wagon to automatically adjust the acquisition frequency according to actual requirements, thereby reducing energy consumption.
The purpose of the invention can be realized by the following technical scheme: a railway freight car bearing temperature safety monitoring system comprises a monitoring platform, a data acquisition module, an acquisition management module, a data analysis module, a data transmission module and an OTA (over the air) upgrading module;
the acquisition management module is used for acquiring the acquisition frequency of the data acquisition module and the information of the data transmission module according to the data analyzed by the data analysis moduleThe information transmission frequency is adjusted by the formula ZX ═ JC-alpha and
obtaining the values of ZX and DX respectively; and then judging the temperature of the bearing of the railway wagon according to different conditions, thereby adjusting the data acquisition frequency of the data acquisition module and the information sending frequency of the data transmission module.
Further, the data acquisition module comprises a non-contact infrared acquisition unit and a contact temperature acquisition unit, the non-contact infrared acquisition unit is used for acquiring the ambient temperature, the contact temperature acquisition unit is used for acquiring the bearing temperature of the railway wagon, and the specific acquisition process comprises the following steps:
step C1: carrying out sequence numbering on each data acquisition module, wherein the sequence number of each data acquisition module is marked as i, and i is 1, 2, … …, n; and n is an integer;
step C2: acquiring the ambient temperature of the bearing of the railway wagon, and marking the ambient temperature of the bearing of the railway wagon as HTi；
Step C3: acquiring the temperature of the bearing of the railway wagon, and marking the temperature of the bearing of the railway wagon as ZTi；
Step C4: acquiring the absolute temperature of a bearing, and marking the absolute temperature as JC;
step C5: and sending the data acquired in the steps C1-C4 to a data analysis module.
Further, the data analysis module is configured to analyze the data acquired by the data acquisition module, and a specific analysis process includes the following steps:
step F1: by formula D ═ ZTi-HTiObtaining a single-shaft temperature rise D;
step F2: by the formula ZX ═ JC-alpha and
respectively obtaining a railway wagon shaft temperature coefficient ZX and a railway wagon temperature rise coefficient DX, wherein alpha is a system preset temperature threshold and is larger than 0;
step F3: the steps F1-F2 are sent to the acquisition management module.
Furthermore, the OTA upgrading module is used for upgrading the software in the data acquisition module on line.
Furthermore, each carriage takes a front bogie and a rear bogie as a unit, and two non-contact infrared acquisition units and two contact temperature acquisition units are respectively arranged at two ends of two shafts of the bogies; the non-contact infrared acquisition unit and the contact temperature acquisition unit are provided with wireless interfaces, are connected with the data transmission module, and are responsible for uploading and issuing data parameters by the data transmission module; the data acquisition module and the data transmission module are provided with wireless communication interfaces, so that bidirectional data communication between the data acquisition module and the data transmission module can be realized; the data acquisition module adopts a low-power-consumption microprocessor technology, and under the non-operating state, the whole static power consumption is lower than 15uA, so that the service life of the battery is prolonged.
Further, the data transmission module is used for sending bearing temperature information and data parameters to the monitoring platform.
The invention has the beneficial effects that: the temperature, the environmental temperature and the absolute temperature of a bearing of the railway wagon are obtained through a data acquisition module, the data acquired by the data acquisition module are sent to a data analysis module, the temperature rise of the bearing of the railway wagon, the temperature rise coefficient and the shaft temperature coefficient of the bearing are obtained through the data analysis module, the data acquired by the data analysis module are sent to an acquisition management module, the acquisition management module can adjust the data acquisition frequency of the data acquisition module and the information output frequency of a data transmission module according to the actual condition of the bearing of the railway wagon, the data acquisition module adopts a low-power microprocessor technology, and the overall static power consumption is lower than 15uA in an out-of-service state; therefore, the effective monitoring of the bearing temperature of the railway wagon is ensured, the energy consumption of the data acquisition module and the data transmission module is reduced, and the service lives of the data acquisition module and the data transmission module are greatly prolonged.
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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 block diagram of a railway wagon bearing temperature safety monitoring system.
Detailed Description
As shown in fig. 1, a system for monitoring the temperature safety of a bearing of a railway wagon comprises a monitoring platform, a data acquisition module, an acquisition management module, a data analysis module, a data transmission module and an OTA upgrading module;
example 1
The data acquisition module comprises a non-contact infrared acquisition unit and a contact temperature acquisition unit, the non-contact infrared acquisition unit is used for acquiring the ambient temperature, the contact temperature acquisition unit is used for acquiring the bearing temperature of the railway wagon, and the specific acquisition process comprises the following steps:
step C1: carrying out sequence numbering on each data acquisition module, wherein the sequence number of each data acquisition module is marked as i, and i is 1, 2, … …, n; and n is an integer;
step C2: acquiring the ambient temperature of the bearing of the railway wagon, and marking the ambient temperature of the bearing of the railway wagon as HTi；
Step C3: acquiring the temperature of the bearing of the railway wagon, and marking the temperature of the bearing of the railway wagon as ZTi；
Step C4: acquiring the absolute temperature of a bearing, and marking the absolute temperature as JC; the absolute temperature is the published temperature describing the real objective world, is the basis for establishing an international protocol temperature scale and is a method for calibrating and quantifying the temperature;
step C5: sending the data acquired in the steps C1-C4 to a data analysis module;
the contact temperature sensor collects the bearing temperature of a contact part where the bearing and the sensor are connected, the collected bearing temperature is used as backup data of the bearing temperature collected by the non-contact infrared collection unit, and when the bearing temperature collected by the non-contact infrared collection unit is abnormal, the bearing temperature is monitored through the backup data.
Taking a front bogie and a rear bogie of each carriage as a unit, and respectively arranging two non-contact infrared acquisition units and two contact temperature acquisition units at two ends of two shafts of the bogies; the non-contact infrared acquisition unit and the contact temperature acquisition unit are provided with wireless interfaces and connected with a data transmission module, and the data transmission module is provided with a CAN interface and a wireless interface; the data transmission module is responsible for uploading and issuing data parameters; the data acquisition module and the data transmission module are provided with wireless communication interfaces, so that bidirectional data communication between the data acquisition module and the data transmission module can be realized; the data acquisition module adopts a low-power-consumption microprocessor technology, and under the non-operating state, the whole static power consumption is lower than 15uA, so that the service life of the battery is prolonged.
And the OTA upgrading module is used for upgrading the software in the data acquisition module on line.
The data analysis module is used for analyzing the data acquired by the data acquisition module, and the specific analysis process comprises the following steps:
step F1: by formula D ═ ZTi-HTiObtaining a single-shaft temperature rise D;
step F2: by the formula ZX ═ JC-alpha and
respectively obtaining a railway wagon shaft temperature coefficient ZX and a railway wagon temperature rise coefficient DX, wherein alpha is a system preset temperature threshold and is larger than 0;
step F3: sending the steps F1-F2 to an acquisition management module;
the acquisition management module is used for adjusting the acquisition frequency of the data acquisition module and the information sending frequency of the data transmission module according to the data analyzed by the data analysis module, and the specific process comprises the following steps:
step G1: when alpha is 15 deg.C, substituting formula ZX JC-alpha and
obtaining the values of ZX and DX respectively;
step G2: when D is less than or equal to 25 ℃, JC is less than or equal to 50 ℃, ZX is less than 0 and DX is less than 0, judging that the bearing temperature of the railway freight car is in a normal state of the shaft temperature;
step G3: the data acquisition frequency of the data acquisition module is adjusted to Cf1, and the information transmission frequency of the data transmission module is adjusted to Ff 1.
Example 2
The acquisition management module is used for adjusting the acquisition frequency of the data acquisition module and the information sending frequency of the data transmission module according to the data analyzed by the data analysis module, and the specific process comprises the following steps:
step G1: when alpha is 20 deg.C, the formula ZX JC-alpha and
obtaining the values of ZX and DX respectively;
step G2: when D is more than 25 ℃ and less than or equal to 40 ℃, JC is more than 50 ℃ and less than or equal to 70 ℃, ZX is less than 0, DX is less than 0 and the holding time is t, the bearing temperature of the railway freight car is judged to be in an axle temperature thermal state; wherein t is a system preset time threshold and is greater than 0;
step G3: the data acquisition frequency of the data acquisition module is adjusted to Cf2, and the information transmission frequency of the data transmission module is adjusted to Ff 2.
Example 3
The acquisition management module is used for adjusting the acquisition frequency of the data acquisition module and the information sending frequency of the data transmission module according to the data analyzed by the data analysis module, and the specific process comprises the following steps:
step G1: when alpha is 25 deg.C, substituting formula ZX JC-alpha and
obtaining the values of ZX and DX respectively;
step G2: when the conditions that D is more than 40 ℃ and less than or equal to 55 ℃, JC is more than 70 ℃ and less than or equal to 90 ℃, ZX is less than 0, DX is less than 0 and the holding time is t are met, the bearing temperature of the railway freight car is judged to be in a shaft temperature strong heat state; wherein t is a system preset time threshold and is greater than 0;
step G3: the data acquisition frequency of the data acquisition module is adjusted to Cf3, the information sending frequency of the data transmission module is adjusted to Ff3, and meanwhile, a warming alarm with the duration of T1 is sent to the monitoring platform.
Example 4
The acquisition management module is used for adjusting the acquisition frequency of the data acquisition module and the information sending frequency of the data transmission module according to the data analyzed by the data analysis module, and the specific process comprises the following steps:
step G1: when alpha is 35 deg.C, substituting formula ZX JC-alpha and
obtaining the values of ZX and DX respectively;
step G2: when D is more than 55 ℃, JC is more than 90 ℃, ZX is less than 0, DX is less than 0 and the holding time is t, the bearing temperature of the railway freight car is judged to be in an axle temperature heat-exciting state; wherein t is a system preset time threshold and is greater than 0;
step G3: adjusting the data acquisition frequency of the data acquisition module to Cf4, adjusting the information sending frequency of the data transmission module to Ff4, and sending a warming alarm with the duration of T2 to the monitoring platform;
wherein T1 and T2 are both system preset warm alarm time length, and T2 is more than 2T 1; wherein 0 < Cf1 < Cf2 < Cf3 < Cf4, and 0 < Ff1 < Ff2 < Ff3 < Ff 4.
And the data transmission module is used for sending bearing temperature information and data parameters to the monitoring platform.
The working principle of the invention is as follows: the temperature, the environmental temperature and the absolute temperature of a bearing of the railway wagon are obtained through the data acquisition module, the data obtained through the data acquisition module are sent to the data analysis module, the temperature rise of the bearing of the railway wagon, the temperature rise coefficient and the shaft temperature coefficient of the bearing are obtained through the data analysis module, the data obtained through the data analysis module are sent to the acquisition management module, the data analyzed by the data analysis module through the acquisition management module are compared with the data analyzed by the data analysis moduleAdjusting the acquisition frequency of the data acquisition module and the information transmission frequency of the data transmission module, and substituting a formula ZX (JC-alpha) and a formula ZX (JC-alpha) when alpha is 15 DEG C
Obtaining the values of ZX and DX respectively; when D is less than or equal to 25 ℃, JC is less than or equal to 50 ℃, ZX is less than 0 and DX is less than 0, judging that the bearing temperature of the railway freight car is in a normal state of the shaft temperature; adjusting the data acquisition frequency of the data acquisition module to Cf1, and adjusting the information transmission frequency of the data transmission module to Ff 1; when alpha is 20 deg.C, the formula ZX JC-alpha and
obtaining the values of ZX and DX respectively; when D is more than 25 ℃ and less than or equal to 40 ℃, JC is more than 50 ℃ and less than or equal to 70 ℃, ZX is less than 0, DX is less than 0 and the holding time is t, the bearing temperature of the railway freight car is judged to be in an axle temperature thermal state; adjusting the data acquisition frequency of the data acquisition module to Cf2, and adjusting the information transmission frequency of the data transmission module to Ff 2; when alpha is 25 deg.C, substituting formula ZX JC-alpha and
obtaining the values of ZX and DX respectively; when the conditions that D is more than 40 ℃ and less than or equal to 55 ℃, JC is more than 70 ℃ and less than or equal to 90 ℃, ZX is less than 0, DX is less than 0 and the holding time is t are met, the bearing temperature of the railway freight car is judged to be in a shaft temperature strong heat state; adjusting the data acquisition frequency of the data acquisition module to Cf3, adjusting the information sending frequency of the data transmission module to Ff3, and sending a warming alarm with the duration of T1 to the monitoring platform; when alpha is 35 deg.C, substituting formula ZX JC-alpha and
obtaining the values of ZX and DX respectively; when D is more than 55 ℃, JC is more than 90 ℃, ZX is less than 0, DX is less than 0 and the holding time is t, the bearing temperature of the railway freight car is judged to be in an axle temperature heat-exciting state; the data acquisition frequency of the data acquisition module is adjusted to Cf4, the information sending frequency of the data transmission module is adjusted to Ff4, and meanwhile, a warm alarm with the duration of T2 is sent to the monitoring platform, so that the temperature monitoring system is applied to the monitoring platformThe data acquisition frequency of the data acquisition module and the information output frequency of the data transmission module can be adjusted through the acquisition management module according to the actual condition of the bearing of the railway wagon, so that the effective monitoring of the temperature of the bearing of the railway wagon is guaranteed, the energy consumption of the data acquisition module and the energy consumption of the data transmission module are reduced, and the service lives of the data acquisition module and the data transmission module are greatly prolonged.
The above formulas are all calculated by removing dimensions and taking numerical values thereof, the formula is a formula which is obtained by acquiring a large amount of data and performing software simulation to obtain the closest real situation, and the preset parameters and the preset threshold value in the formula are set by the technical personnel in the field according to the actual situation or obtained by simulating a large amount of data.
The foregoing is illustrative and explanatory of the structure of the invention, and various modifications, additions or substitutions in a similar manner to the specific embodiments described may be made by those skilled in the art without departing from the structure or scope of the invention as defined in the claims. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Claims (6)
1. A railway wagon bearing temperature safety monitoring system is characterized by comprising a monitoring platform, a data acquisition module, an acquisition management module, a data analysis module, a data transmission module and an OTA (over the air) upgrading module;
the acquisition management module is used for adjusting the acquisition frequency of the data acquisition module and the information transmission frequency of the data transmission module according to the data analyzed by the data analysis module, and the acquisition management module is used for adjusting the acquisition frequency of the data acquisition module and the information transmission frequency of the data transmission module according to the formula ZX (JC-alpha)
Obtaining the values of ZX and DX respectively; and judging the temperature of the bearing of the railway wagon, so as to adjust the data acquisition frequency of the data acquisition module and the information sending frequency of the data transmission module.
2. The railway wagon bearing temperature safety monitoring system as claimed in claim 1, wherein the data acquisition module comprises a non-contact infrared acquisition unit and a contact temperature acquisition unit, the non-contact infrared acquisition unit is used for acquiring the ambient temperature, the contact temperature acquisition unit is used for acquiring the railway wagon bearing temperature, and the specific acquisition process comprises the following steps:
step C1: carrying out sequence numbering on each data acquisition module, wherein the sequence number of each data acquisition module is marked as i, and i is 1, 2, … …, n; and n is an integer;
step C2: acquiring the ambient temperature of the bearing of the railway wagon, and marking the ambient temperature of the bearing of the railway wagon as HTi；
Step C3: acquiring the temperature of the bearing of the railway wagon, and marking the temperature of the bearing of the railway wagon as ZTi；
Step C4: acquiring the absolute temperature of a bearing, and marking the absolute temperature as JC;
step C5: and sending the data acquired in the steps C1-C4 to a data analysis module.
3. The system for monitoring the bearing temperature safety of the railway wagon of claim 1, wherein the data analysis module is used for analyzing the data acquired by the data acquisition module, and the specific analysis process comprises the following steps:
step F1: by formula D ═ ZTi-HTiObtaining a single-shaft temperature rise D;
step F2: by the formula ZX ═ JC-alpha and
respectively obtaining the axle temperature coefficient ZX and the temperature of the railway wagonIncreasing a coefficient DX, wherein alpha is a preset temperature threshold value of the system and is more than 0;
step F3: the steps F1-F2 are sent to the acquisition management module.
4. The railway wagon bearing temperature safety monitoring system as claimed in claim 1, wherein the OTA upgrading module is used for online upgrading of software in the data acquisition module.
5. The system for monitoring the bearing temperature safety of the railway wagon as claimed in claim 2, wherein the non-contact infrared acquisition unit and the contact temperature acquisition unit are provided with wireless interfaces, are connected with the data transmission module, and upload and issue data parameters through the data transmission module; the data acquisition module and the data transmission module are both provided with wireless communication interfaces.
6. The railway wagon bearing temperature safety monitoring system as claimed in claim 1, wherein the data transmission module is used for sending bearing temperature information and data parameters to the monitoring platform.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113654797A (en) * | 2021-08-04 | 2021-11-16 | 株洲科盟车辆配件有限责任公司 | Bearing composite sensor |
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