阅读说明：本技术 用于轨道衡的数据采集装置、数据采集方法及轨道衡 (Data acquisition device and data acquisition method for rail weighbridge and rail weighbridge ) 是由 张振禄 于 2020-06-24 设计创作，主要内容包括：本申请实施例提供了一种用于轨道衡的数据采集装置、数据采集方法及轨道衡,数据采集装置包括：传感器,用于检测列车的载重信息以生成对应载重信息的模拟信号,传感器的数量为多路,多路传感器之间相互独立设置；供电模块,供电模块的数量为多个,多个供电模块相互之间隔离设置,一个供电模块为对应的一路传感器供电,其中,多个所述供电模块的输入端并联到同一个外部电源,且多个所述供电模块的输出端相互独立设置；信号处理模块,信号处理模块的数量为多个,多个信号处理模块相互之间隔离设置,且每个所述信号处理模块由对应配置的一个所述供电模块供电,一个信号处理模块将对应的一路传感器生成的模拟信号转换为数字信号。本申请实施例中,至少解决了因传感器故障导致的数据丢失、数据叠加、数据不准确等问题,以及可实现正常工作检测列车的载重信息。(The embodiment of the application provides a data acquisition device, data acquisition method and track scale for track scale, and data acquisition device includes: the sensors are used for detecting the load information of the train to generate analog signals corresponding to the load information, the number of the sensors is multiple, and the multiple sensors are arranged independently; the sensor comprises a plurality of power supply modules, wherein the number of the power supply modules is multiple, the power supply modules are arranged in an isolated manner, one power supply module supplies power to one corresponding path of sensor, the input ends of the power supply modules are connected in parallel to the same external power supply, and the output ends of the power supply modules are arranged independently; the signal processing module, the quantity of signal processing module is a plurality of, and a plurality of signal processing modules are separated each other and set up, and every signal processing module is by one of corresponding configuration power module power supply, and a signal processing module converts the analog signal that the sensor of a way of correspondence generated into digital signal. In the embodiment of the application, the problems of data loss, data superposition, data inaccuracy and the like caused by sensor faults are at least solved, and the load information of the train can be detected in normal work.)

1. A data acquisition device for railroad track scale, comprising:

the system comprises sensors, a central processing unit and a central processing unit, wherein the sensors are used for detecting load information of a train to generate analog signals corresponding to the load information, the number of the sensors is multiple, and the multiple sensors are arranged independently;

the sensor comprises a plurality of power supply modules, a plurality of sensors and a plurality of power supply modules, wherein the plurality of power supply modules are arranged in an isolated manner, one power supply module supplies power to one corresponding path of sensor, the input ends of the plurality of power supply modules are connected in parallel to the same external power supply, and the output ends of the plurality of power supply modules are arranged independently;

the signal processing module, the quantity of signal processing module is a plurality of, and is a plurality of signal processing module sets up each other keeps apart, and every signal processing module is by one of corresponding configuration power module power supply, one signal processing module with the corresponding one way analog signal that the sensor generated converts digital signal into.

2. The data acquisition device as claimed in claim 1, wherein each of the power supply modules comprises a power isolation module, and each of the power isolation modules of the plurality of power supply modules outputs an independent power supply to supply power to a corresponding one of the sensors and a corresponding one of the signal processing modules respectively.

3. The data acquisition device according to claim 2, wherein the input terminals of the power isolation modules are connected in parallel to a same external power source, so that the input terminals of the power supply modules are connected in parallel to a same external power source, and the output terminals of the power isolation modules are independently arranged from each other, so that the output terminals of the power supply modules are independently arranged from each other, and the output terminal of one power isolation module outputs one independent power source, so as to independently supply power to a corresponding one of the sensors and a corresponding one of the signal processing modules, respectively.

4. The data acquisition device of claim 3, wherein each of the power modules further comprises: the current amplifier comprises a voltage reference module, a comparator and a current expansion triode, wherein the comparator and the current expansion triode provide bridge supply voltage for the sensor according to the bridge supply reference voltage output by the voltage reference module.

5. The data acquisition device according to any one of claims 1 to 4, further comprising a plurality of current monitoring modules, wherein the plurality of current monitoring modules are arranged independently, and one current monitoring module is used for monitoring the working current of the corresponding sensor in one path to determine whether the sensor fails.

6. The data acquisition device as claimed in claim 5, wherein the current monitoring module comprises an amplifier and a sampling resistor, the amplifier is used for amplifying the voltage difference appearing at two ends of the sampling resistor to output an amplified voltage signal; and the corresponding signal processing module calculates the working current flowing through the sensor according to the amplified voltage signal, the impedance of the sampling resistor and the normal impedance of the sensor, and judges whether the impedance value of the sensor is normal or not according to the working current flowing through the sensor so as to judge whether the sensor has a fault or not.

7. The data acquisition device of claim 1, further comprising: the signal processing module is used for generating digital signals corresponding to the load information, and the signal processing module is used for processing the load information in a mode of carrying out electric isolation.

8. The data acquisition device of claim 1, further comprising: the short-circuit protection module, the quantity of short-circuit protection module is a plurality of, one short-circuit protection module is used for to corresponding one way the sensor cut off corresponding when taking place to supply the bridge short circuit supply the bridge voltage that the power module exported.

9. A data acquisition method for rail weighbridge is characterized by comprising the following steps:

providing power supply modules for a plurality of sensors, wherein the plurality of sensors are mutually independent, the number of the power supply modules is multiple, the plurality of power supply modules are mutually isolated, one power supply module supplies power to the corresponding sensor, the input ends of the plurality of power supply modules are connected in parallel to the same external power supply, and the output ends of the plurality of power supply modules are mutually independent;

when power is supplied to a corresponding power supply module, each sensor detects load information of a train to generate an analog signal corresponding to the load information;

each signal processing module converts the analog signal generated by the corresponding one-path sensor into a digital signal, wherein the number of the signal processing modules is multiple, the signal processing modules are arranged in an isolated manner, and each signal processing module is powered by one power supply module which is correspondingly configured.

10. A railroad track scale, comprising:

the load surface is arranged below a track on which the train runs;

the data acquisition device of any one of claims 1-8, wherein the sensors in the data acquisition device are positioned below the load surface.

Technical Field

The embodiment of the application relates to the field of rail transit, in particular to a data acquisition device and a data acquisition method for a rail weighbridge and the rail weighbridge.

Background

The rail weighbridge is a weighbridge for weighing the load of a train (particularly a truck), generally comprises a plurality of sensors for detecting the load information of the train, and the load of the train is measured by collecting and processing signals detected by the sensors. However, in the prior art, one external power supply is adopted to supply power to a plurality of sensors, and the processing of signals of the plurality of sensors is completed by the same processor, so that abnormal conditions such as data loss and data superposition often occur in the scheme, and the load of the train cannot be effectively measured. In addition, in the rail weighbridge system in the prior art, the number of the sensors is limited, and the system can accurately and efficiently acquire data information of each sensor under the condition of multiple sensors.

Disclosure of Invention

In view of the above, an object of the present invention is to provide a data acquisition apparatus, a data acquisition method and a railroad track scale for railroad track scale, which overcome or alleviate some or all of the above-mentioned disadvantages in the prior art.

The embodiment of the application provides the following technical scheme:

a data acquisition device for railroad track scale, comprising:

the system comprises sensors, a central processing unit and a central processing unit, wherein the sensors are used for detecting load information of a train to generate analog signals corresponding to the load information, the number of the sensors is multiple, and the multiple sensors are arranged independently;

the sensor comprises a plurality of power supply modules, a plurality of sensors and a plurality of power supply modules, wherein the plurality of power supply modules are arranged in an isolated manner, one power supply module supplies power to one corresponding path of sensor, the input ends of the plurality of power supply modules are connected in parallel to the same external power supply, and the output ends of the plurality of power supply modules are arranged independently;

the signal processing module, the quantity of signal processing module is a plurality of, and is a plurality of signal processing module sets up each other keeps apart, and every signal processing module is by one of corresponding configuration power module power supply, one signal processing module with the corresponding one way analog signal that the sensor generated converts digital signal into.

Optionally, in an embodiment of the present application, each of the power supply modules includes a power isolation module, and each of the power isolation modules of the plurality of power supply modules outputs an independent power to supply power to the corresponding one of the sensors and the corresponding one of the signal processing modules respectively.

Optionally, in an embodiment of the present application, a plurality of input terminals of the power isolation module are connected in parallel to the same external power source, so that a plurality of input terminals of the power supply module are connected in parallel to the same external power source, and a plurality of output terminals of the power isolation module are independently arranged from each other, so that a plurality of output terminals of the power supply module are independently arranged from each other, and one output terminal of the power isolation module outputs one independent power source, so that the sensor and the corresponding signal processing module independently supply power respectively for one path of correspondence.

Optionally, in an embodiment of the present application, each of the power supply modules further includes: the voltage reference module, the comparator and the current expansion triode provide bridge supply voltage for the sensor according to the bridge supply reference voltage output by the voltage reference module.

Optionally, in an embodiment of the present application, the data acquisition device further includes current monitoring modules, the number of the current monitoring modules is multiple, and multiple the current monitoring modules are independently set up, one the current monitoring module is used for monitoring a corresponding path of the working current of the sensor to determine whether the sensor fails.

Optionally, in an embodiment of the present application, the current monitoring module includes an amplifier and a sampling resistor, where the amplifier is configured to amplify a voltage difference appearing across the sampling resistor to output an amplified voltage signal; and the corresponding signal processing module calculates the working current flowing through the sensor according to the amplified voltage signal, the impedance of the sampling resistor and the normal impedance of the sensor, and judges whether the impedance value of the sensor is normal or not according to the working current flowing through the sensor so as to judge whether the sensor has a fault or not.

Optionally, in an embodiment of the present application, the data acquisition device further includes a voltage monitoring module, the number of the voltage monitoring modules is multiple, and multiple the voltage monitoring modules are independently set up, one the voltage monitoring module is used for monitoring a corresponding path the working voltage of the sensor is in order to judge whether the working voltage of the sensor is normal.

Optionally, in an embodiment of the present application, the data acquisition device further includes: the signal processing module is used for generating digital signals corresponding to the load information, and the signal processing module is used for processing the load information in a mode of carrying out electric isolation.

Optionally, in an embodiment of the present application, the data acquisition device further includes: the short-circuit protection module, the quantity of short-circuit protection module is a plurality of, one short-circuit protection module is used for to corresponding one way the sensor cut off corresponding when taking place to supply the bridge short circuit supply the bridge voltage that the power module exported.

A data acquisition method for railroad track scale, comprising:

providing power supply modules for a plurality of sensors, wherein the plurality of sensors are mutually independent, the number of the power supply modules is multiple, the plurality of power supply modules are mutually isolated, one power supply module supplies power to the corresponding sensor, the input ends of the plurality of power supply modules are connected in parallel to the same external power supply, and the output ends of the plurality of power supply modules are mutually independent;

when power is supplied to a corresponding power supply module, each sensor detects load information of a train to generate an analog signal corresponding to the load information;

each signal processing module converts the analog signal generated by the corresponding one-path sensor into a digital signal, wherein the number of the signal processing modules is multiple, the signal processing modules are arranged in an isolated manner, and each signal processing module is powered by one power supply module which is correspondingly configured.

Optionally, in an embodiment of the present application, a power isolation module is provided for each power supply module, and each power isolation module outputs an independent power supply to supply power to a corresponding one of the sensors.

Optionally, in an embodiment of the present application, an input end of each of the power isolation modules is connected in parallel to a same external power source, so that an input end of each of the power supply modules is connected in parallel to a same external power source, and an output end of each of the power isolation modules is independently arranged so that an output end of each of the power supply modules is independently arranged, and an output end of one of the power isolation modules outputs one of the independent power sources to supply power to the sensor independently for a corresponding one of the sensors.

Optionally, in an embodiment of the present application, a voltage reference module, a comparator and a current expansion triode are provided for each power supply module, and the comparator and the current expansion triode provide a bridge supply voltage for the sensor according to a bridge supply reference voltage output by the voltage reference module.

A railroad track scale, comprising:

the load surface is arranged below a track on which the train runs;

the data acquisition device of any embodiment of this application, wherein, the sensor setting in the data acquisition device is in the below of load surface.

The technical scheme provided in the embodiment of the application can achieve the following technical effects:

(1) through setting up mutually independent sensor and mutually independent data acquisition passageway, effectively avoided data acquisition device to lead to the unable normal condition of working of whole data acquisition device because of the trouble of a certain sensor, solved the data loss, data stack, the inaccurate scheduling problem of data that lead to because of the sensor trouble, guaranteed data acquisition device's normal work to the maintenance for trouble sensor strives for the time.

(2) The input end of the power supply module is connected to an external power supply in parallel, the output ends of the power supply module are mutually independent, if one of the power supply modules breaks down, normal power supply to other sensors cannot be influenced, and other sensors can still work normally to detect load information of the train. The independent power supply output by the power supply module provides bridge voltage for each sensor, so that the stability of the working voltage of the sensor is improved, the signal interference possibly existing in the bridge power supply shared by a plurality of sensors is avoided, and the accuracy and the integrity of data acquisition of the sensor are improved.

(3) The voltage reference module is arranged for each sensor, so that the power supply voltage with strong stability and high precision is provided for the sensors, the accuracy of the detection information of the multiple sensors is ensured, and the metering precision of the train load information acquired by the application data acquisition device is improved.

(4) Because a plurality of signal processing modules which are arranged in an isolated mode exist, one signal processing module is used for processing the load information analog signal generated by one corresponding path of sensor and converting the load information analog signal into a digital signal, each signal processing module is powered by one power supply module which is correspondingly arranged, and a plurality of power supply modules of the plurality of signal processing modules are arranged independently. Each signal processing module adopts independent power supply and independent data signal processing mode, so that signal crosstalk is avoided, when one signal processing module fails to generate the digital signal of the load information, other signal processing modules can normally work to generate the digital signal of the load information. Therefore, the signal processing modules are arranged independently, so that the crosstalk of signals among the signal processing modules is avoided, the signals acquired by each sensor are completely and accurately processed by each signal processing module, and the stability, accuracy and reliability of data processing are improved.

(5) The utility model discloses a set up mutual independent multi-channel sensor, a plurality of power module and a plurality of signal processing module, and a plurality of power module's output neither altogether nor power of sharing, therefore, wherein arbitrary one part is as the sensor, power module or signal processing module appear unusual or damage the circumstances such as can not influence with unusual independent other power module of part, a sensor, signal processing module's normal work, can effectively reduce the fault area, stop signal interference, effectively avoid signal loss, signal delay, signal stack abnormal conditions such as, the reliability and the stability of data acquisition device data information collection have been improved, the measurement accuracy for improving the track scale provides the assurance.

Drawings

Some specific embodiments of the present application will be described in detail hereinafter by way of illustration and not limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a schematic structural diagram of a data acquisition device for a railroad track scale in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a power supply module in an embodiment of the present application;

fig. 3 is a schematic structural diagram of a data acquisition device according to an embodiment of the present application, in which a current monitoring module is added.

FIG. 4 is a schematic structural diagram of a current monitoring module according to an embodiment of the present disclosure;

fig. 5A is a schematic structural diagram of an application of the data acquisition device in the embodiment of the present application;

fig. 5B is a schematic view of an application structure of the data acquisition device in the embodiment of the present application;

FIG. 6 is a schematic flow chart illustrating a data acquisition method for railroad track scale according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of a railroad track scale according to an embodiment of the present application.

Detailed Description

It is not necessary for any particular embodiment of the invention to achieve all of the above advantages at the same time.

In order to make those skilled in the art better understand the technical solutions in the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application shall fall within the scope of the protection of the embodiments in the present application.

The following further describes specific implementations of embodiments of the present application with reference to the drawings of the embodiments of the present application.

Fig. 1 is a schematic structural diagram of a data acquisition device for a railroad track scale in an embodiment of the present application; as shown in fig. 1, in this embodiment, the data acquisition apparatus includes: the system comprises a sensor 101, a power supply module 102 and a signal processing module 103; wherein:

the sensor 101 is used for detecting the load information of the train to generate an analog signal corresponding to the load information, the number of the sensors 101 is multiple, the multiple sensors 101 form multiple paths of sensors, and the multiple paths of sensors 101 are arranged independently;

a plurality of power supply modules 102, wherein the number of the power supply modules 102 is multiple, the power supply modules 102 are arranged in an isolated manner, and one power supply module 102 supplies power to one corresponding path of the sensor 101; the input ends of the power supply modules are connected to the same external power supply in parallel, and the output ends of the power supply modules are arranged independently;

the number of the signal processing modules 103 is multiple, the multiple signal processing modules 103 are arranged in an isolated manner, each signal processing module is powered by one correspondingly configured power supply module, and one signal processing module 103 converts the analog signal generated by one corresponding path of the sensor 101 into a digital signal.

An independent data acquisition channel is formed by one sensor 101, one power supply module 102 and one signal processing module 103, a plurality of data acquisition channels formed by a plurality of sensors, a plurality of power supply modules and a plurality of signal processing modules are arranged independently, and all links of power supply, data acquisition and signal processing are completed independently, so that signal interference is avoided, and the accuracy and reliability of data acquisition are ensured.

Referring to fig. 1, in this embodiment, because a plurality of power supply modules 102 and a plurality of sensors 101 are separately arranged, one power supply module 102 supplies power to only one sensor 101 and one signal processing module 103, and the number of the sensors 101, the power supply modules 102 and the signal processing modules 103 corresponds to one another, when one sensor 101 fails, the normal operation of the other sensors 101 is not affected, and the other sensors 101 can normally detect the load information of the train to generate analog signals corresponding to the load information. In this embodiment, through setting up mutually independent sensor 101 and mutually independent data acquisition passageway, effectively avoided data acquisition device to lead to the unable normal condition of working of whole data acquisition device because of the trouble of a certain sensor, solved the data loss, data stack, the inaccurate scheduling problem of data that lead to because of the sensor trouble, guaranteed data acquisition device's normal work to the maintenance for trouble sensor strives for the time.

In this embodiment, the input end of the power supply module is connected in parallel to an external power supply, and the output ends are arranged independently, so that if one of the power supply modules 102 fails, the normal power supply of other power supply modules is not affected, the signal processing modules and the sensors corresponding to the other power supply modules one to one are not affected, and the other sensors 101 and the other signal processing modules can still work normally to detect the load information of the train. Because the input end of the power supply module is connected to an external power supply in parallel, the output ends are arranged independently, unified power supply is guaranteed, the plurality of power supply modules are enabled to supply power for the corresponding sensors and the signal processing modules independently, the power supply of the multi-path sensor and the power supply independence of the plurality of signal processing modules are guaranteed, the fact that the normal work of the other power supply modules which are arranged independently with the parts is not affected due to the fact that one part breaks down is guaranteed, the signal processing modules and the sensors, and the stability and the reliability of the data acquisition device are improved.

In this embodiment, the data acquisition device includes a plurality of signal processing modules 103 that are isolated from each other, and each signal processing module is powered by one of the power supply modules that is configured correspondingly, and one of the power supply modules independently powers a corresponding signal processing module and a sensor of one channel. One of the signal processing modules 103 is configured to process one of the analog signals of the load information generated by the sensor 101 and convert the analog signal into a digital signal, and when one of the signal processing modules 103 fails to generate the digital signal of the load information, the other signal processing modules 103 operate normally to generate the digital signal of the load information. Moreover, the signal processing modules 103 are arranged independently, each signal processing module is independently powered by an independent power supply module, and each signal processing module independently processes signals, so that signal crosstalk among the signal processing modules is avoided, the signals acquired by each sensor are completely and accurately processed by each signal processing module, and the stability, accuracy and reliability of data processing are improved.

In this embodiment, through setting up mutually independent multisensor 101, a plurality of power module 102 and a plurality of signal processing module 103 of mutually independent of output mutually independent, a plurality of sensors have been realized, a plurality of power module, a plurality of signal processing module are independent respectively completely, therefore, a plurality of power module's output neither altogether nor power supply in common, can effectively reduce the fault area, stop signal interference, effectively avoid abnormal conditions such as signal loss, signal delay, signal stack, the reliability and the stability of data acquisition device data information collection have been improved, the measurement accuracy for improving the track scale provides the assurance.

In this embodiment, the structure of the power supply module 102 is not particularly limited as long as power can be supplied to the sensor 101.

Fig. 2 is a schematic structural diagram of a power supply module in an embodiment of the present application; as shown in fig. 2, each of the power supply modules 102 includes: the power isolation module 112 is electrically connected with the voltage reference module 122, the voltage reference module 122 is electrically connected with the comparator 132, and the comparator 132 is electrically connected with the current expansion triode 142.

In this embodiment, the input terminals of the plurality of power supply modules are connected in parallel to an external power supply, and the output terminals are arranged independently of each other. Each power supply module 102 includes a power isolation module 112, and the power isolation modules 112 correspond to the number of power supply modules 102 one to one. When there are a plurality of power supply modules 102, the number of power isolation modules 112 is also a plurality. Each power isolation module 112 outputs an independent power supply, which is respectively a corresponding one of the sensors 101 and a corresponding one of the signal processing modules 103 for supplying power, thereby realizing that the output ends of a plurality of power supply modules 102 for supplying power to the multi-channel sensors 101 and for supplying power to the plurality of signal processing modules 103 are mutually independent and do not interfere with each other, ensuring that a data acquisition channel formed by one power supply module 102, one signal processing module 103 and one of the channels of the sensors 101 is completely independent, and a plurality of data acquisition channels formed by a plurality of power supply modules 102, a plurality of signal processing modules 103 and the multi-channel sensors 101 are mutually independent and do not interfere with each other. According to the embodiment, the independent power supply provides the working bridge supply voltage for each sensor, the signal interference possibly existing in the bridge supply shared by a plurality of sensors is avoided, and the accuracy and the integrity of data acquisition of the sensors are improved.

Specifically, in this embodiment, the input ends of the power isolation modules 112 are connected in parallel to the same external power source, so that the input ends of the power supply modules are connected in parallel to the same external power source, and the output ends of the power isolation modules 112 are independently arranged, so that the output ends of the power supply modules are independently arranged, and the output end of one power isolation module outputs one independent power source, and the independent power source outputs one stable bridge voltage, so as to independently supply power to one corresponding path of the sensor 101 and one signal processing module 103. In other words, an external power supply provides a plurality of isolated independent power supplies in a physical isolation manner, output ends of the isolated independent power supplies are independent of each other and do not interfere with each other, and each independent power supply independently supplies power to a corresponding path of sensor 101 and a corresponding signal processing module 103.

Specifically, the power isolation module 112 can provide a plurality of independent power supplies which are independent from each other and do not interfere with each other, such as an isolation transformer, and the like, without limitation.

When the sensor is applied to detecting the load information of the train, the stability of the bridge voltage for supplying power to the sensor is very important. The slight voltage misalignment or fluctuation of the supply bridge voltage can seriously affect the detection result, so that the measurement precision of the rail weighbridge applying the data acquisition device is reduced. For this reason, referring to fig. 2, in order to obtain a more stable supply bridge voltage, the power supply module of the embodiment further includes a voltage reference module 122, a comparator 132 and a current expanding transistor 243. The voltage reference module 122 is configured to generate a supply bridge reference voltage according to the independent power supply, i.e., the output power supply of the power isolation module 112, where the supply bridge reference voltage is a known absolute stable voltage. The comparator 132 and the current-expanding transistor 243 provide a stable supply bridge voltage for the sensor according to the supply bridge reference voltage output by the voltage reference module 122.

In this embodiment, the voltage reference module has accurate initial accuracy and extremely low noise, and the output supply bridge reference voltage can be kept stable and unchanged when the temperature and time change, so an absolute stable voltage is provided by the voltage reference module, the absolute stable voltage is compared with the output voltage of the independent power supply by the comparator to obtain a feedback signal for adjusting the supply bridge voltage, the switching time of the current-expanding triode is adjusted by the feedback signal, and finally, a supply bridge voltage with high load capacity and extremely stable voltage is obtained.

In this embodiment, the structure of the voltage reference module is not particularly limited as long as the power supply reference voltage can be generated.

Here, it should be noted that different voltage reference modules are selected to meet the requirements of different application scenarios.

Here, the voltage reference module 122, the comparator 132 and the current spreading transistor 142 may constitute a feedback current spreading module, or the comparator 132 and the current spreading transistor 142 may constitute a feedback current spreading module.

Fig. 3 is a schematic structural diagram of a data acquisition device according to an embodiment of the present application, in which a current monitoring module is added. As shown in fig. 3, the number of the current monitoring modules 104 is multiple, the current monitoring modules 104 are independently arranged, one current monitoring module 104 is configured to monitor a corresponding one of the working currents of the sensor 101 to determine whether the sensor 101 fails, and at this time, the output voltage of the current monitoring module 104 supplies power to the sensor.

Referring to fig. 3, in this embodiment, the current monitoring module 104 is connected in series to a signal input end of the sensor, and monitors a working current change caused by an impending failure and an increase in error of the sensor 101 due to a change in impedance of the sensor by the current monitoring module 104, and determines whether the sensor 101 has a fault or a hidden fault according to the change in the working current, so as to realize early detection and resolution of the fault and/or the hidden fault. When the data acquisition device of this embodiment is used for weighing train load information on being applied to the track scale, the track scale has high requirement to trouble maintenance time as important trade settlement measurement utensil, avoids finding after the trouble, goes to contact the producer again and dispatches people to maintain, delays time, still can cause serious economic loss because of weighing the mistake. In addition, the situation that some sensors 101 cannot find hidden faults in time to cause data loss and the like can be avoided, and further the deviation of the measuring result of the rail weighbridge is caused.

FIG. 4 is a schematic structural diagram of a current monitoring module according to an embodiment of the present application; as shown in fig. 4, the current monitoring module 104 includes an amplifier 114 and a sampling resistor 124, where the amplifier 114 is configured to amplify a voltage difference appearing across the sampling resistor 124 to output an amplified voltage signal; the corresponding signal processing module 103 calculates the working current flowing through the sensor 101 according to the amplified voltage signal, the impedance of the sampling resistor 124 and the normal impedance of the sensor 101, and determines whether the impedance value of the sensor 101 is normal according to the working current flowing through the sensor 101 to determine whether the sensor 101 has a fault.

In this embodiment, considering that the impedance of the sensor 101 is generally fixed and unchanged when the sensor 101 normally operates, when the sensor 101 fails, the impedance changes, and thus the operating current flowing through the sensor 101 also changes, in this embodiment, the operating current flowing through each sensor 101 is monitored, so that whether the sensor 101 fails or not can be determined quickly and directly.

Optionally, in other embodiments, the data acquisition device may further include a voltage monitoring module, where the voltage monitoring module is electrically connected to the current monitoring module 104, and monitors the accuracy of the bridge voltage finally output by the current monitoring module 104 and used by the sensor. When the current monitoring module is not configured, the voltage monitoring module is electrically connected with the part of the power supply module which finally outputs the bridge voltage so as to monitor the precision of the bridge voltage. The number of the voltage monitoring modules is multiple, the voltage monitoring modules are arranged independently, one voltage monitoring module is used for monitoring the working voltage of one corresponding path of the sensor 101, namely the accuracy of the bridge voltage finally output by the power supply module 102, and when the current monitoring module 104 is connected between the power supply module 102 and the sensor 101, the bridge voltage finally output by the power supply module 102 is the bridge voltage output after flowing through the current monitoring module 104.

In this embodiment, each independent data acquisition channel that power module, signal processing module and sensor formed all can set up a current monitoring module and/or voltage monitoring module, whether the operating current through current detection module monitoring sensor is normal in order not to influence the normal work of other sensors when confirming the fault sensor at the very first time, whether the supply bridge voltage that provides sensor work is normal through voltage monitoring module monitoring to ensure that the sensor obtains stable accurate supply bridge voltage.

Referring to fig. 1 again, as an embodiment, the data acquisition device includes a plurality of signal processing modules 103, the plurality of signal processing modules 103 are isolated from each other, each power supply module supplies power to a corresponding sensor and a corresponding signal processing module, and the corresponding signal processing module 103 converts the analog signal generated by the corresponding one of the sensors into a digital signal. "corresponding" in this and other embodiments means that two circuit modules are connected in a one-to-one correspondence in signal processing. Each signal processing module 103 includes an a/D data conversion unit and a data processing unit, the signal output by the sensor is an analog signal, and the a/D data conversion unit converts the analog signal output by the corresponding sensor into a digital signal under the control of the data processing unit. A data processing unit is arranged in a signal processing module corresponding to each sensor, so that the signal processing module is effectively ensured to accurately process the acquired sensor detection data at a high speed.

In this embodiment, each independent power supply module provides accurate bridge voltage with extremely low noise for each corresponding sensor and each signal processing module, so that the plurality of information processing modules can concurrently acquire and process the detection data (i.e., the analog signal generated by each sensor) of the plurality of sensors at the same sampling position, and the accuracy of data acquisition is greatly improved.

Fig. 5A is a schematic structural diagram of an application of the data acquisition device in the embodiment of the present application; as shown in fig. 5A, the sensor 101 is illustrated by taking a wheatstone bridge structure composed of four resistance strain gauges and using a current monitoring module as an example, the sensor 101 has four terminals, which are a positive bridge supply electrode (Ex +), a negative bridge supply electrode (Ex-), a positive signal electrode (S +), and a negative signal electrode (S-), and the bridge supply voltage supplies power to the sensor 101 through the positive bridge supply electrode (Ex +), and the negative bridge supply electrode (Ex-). The sensor 101 outputs the analog signal to the signal processing module 103 in the above embodiment through a signal positive pole (S +) and a signal negative pole (S-).

In addition, the data acquisition apparatus of the present embodiment includes the power isolation module 112.

As an embodiment, the data acquisition apparatus further includes a plurality of signal isolation modules, one signal isolation module is configured to perform magnetic coupling isolation processing on the digital signal corresponding to the load information generated by one signal processing module 103, so as to ensure that the plurality of signal processing modules acquire, process and output signals independently, and each signal processing module 103 does not interfere with each other.

In this embodiment and the above embodiments, the independent power supply module and the voltage reference module therein are configured to provide a more stable and accurate bridge voltage for the sensors, so that the multiple signal processing circuits can concurrently acquire data signals detected by the multiple sensors in real time at a higher sampling frequency, for example, concurrently acquire detection signals of 16 sensors at a sampling frequency higher than 800HZ, and then the data processing unit configured in each signal processing module performs synchronous data processing on the acquired detection signals of each sensor, thereby greatly increasing the number of sensors that can be arranged in the data acquisition device, the number of sensors can reach 16, or even more, and ensuring that the multiple sensors concurrently acquire data at a higher sampling frequency, for example, the sampling frequency reaches 800HZ, 1200HZ, 1800HZ, or even 2500HZ or more, the high efficiency, accuracy and completeness of the data acquisition device are guaranteed, and when the data acquisition device is applied to a rail weighbridge system, the weighing metering precision of the rail weighbridge is effectively guaranteed. The "concurrent acquisition" refers to that the signal processing circuit synchronously acquires data (i.e., the analog signal generated by each sensor) of the multiple sensors at the same sampling position in real time, so as to ensure consistency of the data of the multiple sensors at the acquisition position when the train moves at a high speed, where the "consistency" includes complete consistency between the actual sampling position and the calculated sampling position, and also includes that the maximum sampling deviation between the calculated sampling position and the actual sampling position is less than a certain set value, for example, the set value may be set to be not more than 1.5cm, and the smaller the maximum sampling deviation is, the higher the data sampling precision and accuracy are.

As an embodiment, the data acquisition device further includes a plurality of short-circuit protection modules, and one short-circuit protection module is used for cutting off the bridge supply voltage output by the corresponding power supply module when a bridge supply short circuit occurs to a corresponding one of the sensors.

Specifically, the short-circuit protection module may include a triode and a sampling resistor, a short-circuit monitoring point is formed by the sampling resistor, and the on-off of the triode is controlled by the voltage of the short-circuit monitoring point, so that the triode is cut off when the sensor is short-circuited by a supply bridge, and the supply bridge voltage output by the corresponding power supply module is cut off; on the contrary, after the bridge short circuit fault of the sensor is eliminated, the triode is conducted again, so that the bridge supply voltage output by the corresponding power supply module normally supplies power to the sensor.

In the above embodiment, the sensors, the power supply module, the signal processing module, the current monitoring module, the voltage monitoring module, the short-circuit protection module, and the signal isolation module are equal in number, and all interact data in a one-to-one correspondence manner to form independent data acquisition and processing channels.

Fig. 5B is a schematic view of an application structure of the data acquisition device in the embodiment of the present application; as shown in fig. 5B, the voltage monitoring module 105 is added on the basis of fig. 5A, and the voltage monitoring module 105 is configured to monitor the accuracy of the working voltage of the corresponding one path of the sensor 101, that is, the bridge voltage finally output by the power supply module 102.

FIG. 6 is a schematic flow chart illustrating a data acquisition method for railroad track scale according to an embodiment of the present disclosure; as shown in fig. 6, it includes the following steps:

s601, providing power supply modules for multiple sensors, wherein the multiple sensors are arranged independently, the number of the power supply modules is multiple, the multiple power supply modules are arranged in an isolated mode, and one power supply module supplies power to one corresponding sensor; the input ends of the power supply modules are connected to the same external power supply in parallel, and the output ends of the power supply modules are arranged independently;

s602, when power is supplied to a corresponding power supply module, each sensor detects load information of a train to generate an analog signal corresponding to the load information, wherein the number of the sensors is multiple, and the multiple sensors are arranged independently;

s603, each signal processing module converts the analog signal generated by the corresponding one path of sensor into a digital signal, wherein the number of the signal processing modules is multiple, the multiple signal processing modules are arranged in an isolated manner, and each signal processing module is powered by one power supply module which is correspondingly configured.

In this embodiment, there are a plurality of power supply modules that keep apart the setting each other, and a plurality of power supply module's input connects in parallel to an external power source moreover, has both ensured that entire system uses unified power supply, realizes being the independent power supply of multisensor through the mutually independent setting of a plurality of power supply module's output again, has guaranteed the power supply independence and the stability of every way sensor. Because the sensors are independently arranged, and one power supply module only supplies power for one sensor, when the step S602 is executed, when one sensor fails, the normal operation of the other sensors is not affected, and the other sensors can normally detect the load information of the train to generate the analog signal corresponding to the load information. In this embodiment, by setting the mutually independent sensors and the mutually independent data acquisition channels, the situation that the whole data acquisition process cannot be normally executed due to a failure of a certain sensor when step S602 is executed is effectively avoided, the problems of data loss, data superposition, data inaccuracy and the like caused by a sensor failure are solved, the normal execution of the data acquisition method is ensured, and time is won for the maintenance of a failed sensor.

In this embodiment, the power supply modules are arranged independently from each other, and if one of the power supply modules fails, normal power supply to other sensors is not affected, so that it is ensured that detection output signals of other sensors are not interfered, and when step S602 is executed, other sensors can still normally work to detect load information of the train.

In this embodiment, the plurality of signal processing modules are isolated from each other, each signal processing module is powered by an independent power supply module, so that the plurality of signal processing modules are powered independently, and one signal processing module processes the analog signal of the load information generated by the corresponding sensor and converts the analog signal into a digital signal, so that when step S603 is executed, when a certain signal processing module fails to generate the digital signal of the load information, other signal processing modules normally operate to generate the digital signal of the load information. And moreover, the signal processing modules are arranged independently, so that signal crosstalk is avoided, the signals acquired by each sensor are completely and accurately processed by each signal processing module, and the stability, accuracy and reliability of data processing are improved.

In this embodiment, through setting up mutually independent multiple sensor, a plurality of power module and a plurality of signal processing module, realized power module, complete independence of signal processing module, because the output of a plurality of power module neither shares nor the power, can effectively reduce the fault area when carrying out above-mentioned data acquisition method, stop signal interference, effectively avoid signal loss, signal delay, signal stack abnormal conditions such as stack, improved data acquisition method data information's reliability and stability, provide the assurance for improving the measurement accuracy of track scale.

Optionally, in an embodiment, a power isolation module is provided for each power supply module, and each power isolation module outputs an independent power supply to supply power to a corresponding one of the sensors, so that the power supply modules among the multiple sensors are independent from each other and do not interfere with each other.

Optionally, in an embodiment, the input ends of the power isolation modules are connected in parallel to the same external power source, so that the input ends of the power supply modules are connected in parallel to the same external power source, the output ends of the power isolation modules are independently arranged, so that the output ends of the power supply modules are independently arranged, and the output end of one power isolation module outputs one independent power source to independently supply power to the corresponding sensor.

Optionally, in an embodiment, a voltage reference module, a comparator and a current expansion triode are provided for each power supply module; therefore, when the power supply module supplies power to the corresponding one of the sensors in step S601, the comparator and the current expansion triode provide a bridge supply voltage for the sensors according to a bridge supply reference voltage output by the voltage reference module.

In this embodiment, since the voltage reference module has accurate initial accuracy and extremely low noise, and the voltage can be kept stable and unchanged when the temperature and time change, an absolute stable voltage can be provided by the voltage reference module when step S601 is executed, the absolute stable voltage is compared with the output voltage of the independent power supply by the comparator to obtain a feedback signal for adjusting the bridge supply voltage, and by adjusting the switching time of the current-expanding triode, a bridge supply voltage with strong loading capability and very stable voltage is finally obtained, so that the bridge supply voltage is guaranteed not to be slightly misaligned or fluctuated, a serious influence on the sensor is avoided, and the normal operation of the data acquisition method is further guaranteed.

FIG. 7 is a schematic structural diagram of a railroad track scale according to an embodiment of the present application; as shown in fig. 7, the rail weighbridge includes: a load surface 105, wherein the load surface 105 is arranged below a track 106 on which a train runs; and the data acquisition device of the embodiment shown in fig. 1 (the specific structural components of the data acquisition device and the reference numerals thereof are omitted here), wherein the sensor in the data acquisition device is arranged below the load surface.

In this embodiment, because there are a plurality of power supply modules isolated from each other and a plurality of sensors independently arranged from each other, one power supply module only supplies power to one sensor and one signal processing module, when one of the power supply modules, one sensor or one signal processing module fails, the normal operation of other power supply modules, other sensors and other signal processing modules independently arranged from the power supply module is not affected, or what is called as a data acquisition channel fails, the normal operation of other data acquisition channels is not affected. In this embodiment, through a plurality of mutually independent data acquisition channels that power module, sensor and signal processing module formed, effectively avoided data acquisition device to lead to the unable normal condition of working of whole data acquisition device because of the trouble of a certain sensor, solved the data loss that leads to because of the sensor trouble, data stack, inaccurate scheduling problem of data, guaranteed the normal work of data acquisition device and track scale to the maintenance for trouble sensor is striven for the time.

In this embodiment, the output of power module sets up independently each other, if one of them power module breaks down, also can not influence the normal power supply to other sensors, other signal processing modules, and other sensors still can normally work and detect the load information of train, and then guarantee the normal work of rail weighbridge.

In this embodiment, because there are a plurality of signal processing modules that are isolated from each other, one signal processing module is configured to process an analog signal of the load information generated by a corresponding one of the sensors and convert the analog signal into a digital signal, when a certain signal processing module fails to generate the digital signal of the load information, the other signal processing modules operate normally to generate the digital signal of the load information. Moreover, the signal processing modules are arranged independently, and the independent power supply and the independent signal processing are adopted, so that the signal crosstalk among the signal processing modules is avoided, the signals acquired by each sensor are completely and accurately processed by each signal processing module, the stability, the accuracy and the reliability of data processing are improved, and the metering precision of the rail weighbridge is further ensured.

In this embodiment, through setting up mutually independent multisensor, a plurality of power module and a plurality of signal processing module, realized that a plurality of power module's output neither shares the power altogether, can effectively reduce the fault area, stop signal interference, effectively avoid abnormal conditions such as signal loss, signal delay, signal stack, improved data acquisition device data information's collection reliability and stability, provide the assurance for the measurement accuracy who improves the track scale.

Optionally, in an embodiment, if the power supply module includes the above power supply isolation module, each power supply isolation module may output an independent power supply to supply power to a corresponding one of the sensors, so that in a data acquisition process, power supply modules between the sensors are independent of each other and do not interfere with each other, thereby ensuring that a railroad track scale that measures and weighs a load of a train by using the data acquisition device normally works, and realizing effective measurement.

Optionally, in an embodiment, in order to provide a more stable power supply, the power supply module further includes a voltage reference module, a comparator and a current expansion triode, because the voltage reference module has precise initial precision, extremely low noise, and the voltage can be kept stable and unchanged when the temperature and time change, an absolute stable voltage can be provided by the voltage reference module, the absolute stable voltage is compared with the output voltage of the independent power supply by the comparator to obtain a feedback signal for adjusting the voltage of the bridge, the switching time of the current expansion triode is adjusted by the feedback signal, and finally a bridge voltage with strong loading capability and very stable voltage is obtained, so that the serious influence on the sensor caused by slight voltage misalignment or fluctuation of the bridge voltage is avoided, and the rail weigher for weighing the load of the train by applying the data acquisition method is ensured to work normally, the effective measurement of the load of the train is realized.

Of course, the data acquisition device shown in fig. 7 may also include the current monitoring module, the voltage monitoring module, and the like, which are not described in detail.

In various embodiments, the description with reference to the figures. Certain embodiments, however, may be practiced without one or more of these specific details, or in conjunction with other known methods and structures. In the following description, numerous specific details are set forth, such as specific structures, dimensions, processes, etc., in order to provide a thorough understanding of the present invention. In other instances, well known semiconductor processing and manufacturing techniques have not been described in particular detail in order to avoid obscuring the present invention. Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or configuration, or characteristic described in connection with the embodiment, is included in at least one embodiment of the present invention. Thus, the appearances of the phrase "in one embodiment" in various places throughout this specification are not necessarily referring to the same example. Furthermore, the particular features, structures, configurations, or characteristics may be combined in any suitable manner in one or more embodiments.

The terms "generate", "on", "pair", "on" and "on" as used herein may refer to a relative position with respect to another layer or layers. One layer "on," "grown on," or "on" another layer or adhered to "another layer may be in direct contact with" another layer or may have one or more intervening layers. A layer "on" a layer may be a layer that is in direct contact with the layer or there may be one or more intervening layers.

Before proceeding with the following detailed description, it may be helpful to set forth definitions of certain words and phrases used throughout this patent document: the terms "include" and "comprise," as well as variations thereof, are meant to be inclusive and not limiting; the term "or" is inclusive, meaning and/or; the phrases "associated with …" and "associated with" and variations thereof may be intended to include, be included, "interconnected with …," inclusive, included, "connected to …" or "connected with …," "coupled to …" or "coupled with …," "communicable with …," "mated with …," staggered, juxtaposed, proximate, "constrained to …" or "constrained with …," have the properties of …, "and the like; and the term "controller" means any device, system or component thereof that controls at least one operation, such a device may be implemented in hardware, firmware or software, or some combination of at least two of the same. It should be noted that the functionality associated with any particular controller may be centralized or distributed, whether locally or remotely. Definitions for certain words and phrases are provided throughout this patent document, those of ordinary skill in the art should understand that in many, if not most instances, such definitions apply to prior art as well as to future uses of such defined words and phrases.

In the present disclosure, the expression "include" or "may include" refers to the presence of a corresponding function, operation, or element, without limiting one or more additional functions, operations, or elements. In the present disclosure, terms such as "including" and/or "having" may be understood to mean certain characteristics, numbers, steps, operations, constituent elements, or combinations thereof, and may not be understood to preclude the presence or addition of one or more other characteristics, numbers, steps, operations, constituent elements, or combinations thereof.

In the present disclosure, the expression "a or B", "at least one of a or/and B" or "one or more of a or/and B" may include all possible combinations of the listed items. For example, the expression "a or B", "at least one of a and B", or "at least one of a or B" may include: (1) at least one a, (2) at least one B, or (3) at least one a and at least one B.

The expressions "first", "second", "said first" or "said second" used in various embodiments of the present disclosure may modify various components regardless of order and/or importance, but these expressions do not limit the respective components. The foregoing description is only for the purpose of distinguishing elements from other elements. For example, the first user equipment and the second user equipment represent different user equipment, although both are user equipment. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of the present disclosure.

When an element (e.g., a first element) is referred to as being "operably or communicatively coupled" or "connected" (operably or communicatively) to "another element (e.g., a second element) or" connected "to another element (e.g., a second element), it is understood that the element is directly connected to the other element or the element is indirectly connected to the other element via yet another element (e.g., a third element). In contrast, it is understood that when an element (e.g., a first element) is referred to as being "directly connected" or "directly coupled" to another element (a second element), no element (e.g., a third element) is interposed therebetween.

The expression "configured to" as used herein may be used interchangeably with the expressions: "suitable for", "having a capacity", "designed as", "suitable for", "manufactured as" or "capable". The term "configured to" may not necessarily mean "specially designed" in hardware. Alternatively, in some cases, the expression "a device configured as …" may mean that the device is "… capable" along with other devices or components. For example, the phrase "a processor adapted (or configured) to perform A, B and C" may mean a dedicated processor (e.g., an embedded processor) for performing the respective operations only, or a general-purpose processor (e.g., a Central Processing Unit (CPU) or an Application Processor (AP)) that may perform the respective operations by executing one or more software programs stored in a memory device.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used herein, the singular forms may also include the plural forms unless the context clearly dictates otherwise.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. Unless expressly defined in this disclosure, such terms as defined in commonly used dictionaries may be interpreted as having a meaning that is the same as a meaning in the context of the relevant art and should not be interpreted as having an idealized or overly formal meaning. In some cases, even terms defined in the present disclosure should not be construed to exclude embodiments of the present disclosure.

The term "module" or "functional unit" as used herein may mean, for example, a unit including hardware, software, and firmware, or a unit including a combination of two or more of hardware, software, and firmware. It should be noted that the algorithms illustrated and discussed herein have various modules that perform particular functions and interact with each other. It should be understood that for the purposes of description, these modules are separated only based on their functionality and represent computer hardware and/or executable software code stored on a computer-readable medium for execution on suitable computing hardware. The various functions of the different modules and units may be combined or separated into hardware and/or software stored on a non-transitory computer readable medium as above as modules in any way and may be used alone or in combination.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.