WO2022062730A1 - 一种轨道车辆碰撞测试系统 - Google Patents
一种轨道车辆碰撞测试系统 Download PDFInfo
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- G—PHYSICS
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/08—Railway vehicles
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- G—PHYSICS
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
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- the rail vehicle crash test system is usually used to study the collision accident and to evaluate the safety of the energy-absorbing vehicle body.
- the layout of each load cell in the rail vehicle crash test system needs to be adjusted accordingly according to different crash test requirements.
- the traditional technology cannot accurately and conveniently realize the hardware channel setting of load cells to adjust the system parameters. Therefore, a large amount of manual participation is usually required, and the layout of each crash test is determined and entered manually.
- the sensor coefficients of each load cell not only lead to low work efficiency, but also prone to incorrect system parameter settings.
- the present invention discloses a rail vehicle crash test system, so as to realize the self-identification function of the rail vehicle crash test system, and it is not necessary to manually determine and enter the sensor coefficients of each load cell arranged in each crash test, so as not only to Improve work efficiency and effectively avoid system parameter setting errors.
- a rail vehicle crash test system comprising: a sensor connection board, a force measuring sensor group, a data acquisition system and a control system;
- the sensor connecting plate is provided with mounting holes
- the load cell group includes: N load cells, each of the load cells is installed on one of the mounting holes of the sensor connection board, and all the load cells installed on the sensor connection board
- the sensor forms a rail vehicle collision wall, wherein each of the load cells has a sensor ID chip, and the sensor ID chip stores a sensor coefficient and a sensor number representing a unique identification, and the sensor coefficient is used to represent the voltage value and the sensor force.
- N is a positive integer
- the number of hardware channels that the data acquisition system has is not less than the number of the load cells, each of the load cells is connected to one of the hardware channels, and the data acquisition system acquires through each of the hardware channels the voltage signal output by the corresponding load cell during the collision test of the rail vehicle, amplify the voltage signal to obtain a target voltage signal, and store the target voltage signal;
- the control system obtains each of the target voltage signals from the data acquisition system, and determines the sensor number of the corresponding load cell based on the hardware channel corresponding to each of the target voltage signals, and records it as the target sensor number, from In the pre-stored correspondence between sensor numbers and sensor coefficients, the sensor coefficients corresponding to each of the target sensor numbers are determined.
- the data acquisition system includes: a master and multiple slaves, the master is connected to each of the slaves, the master generates a synchronous clock signal, and sends the synchronous clock signal to each of the slaves.
- the slave machine realizes the synchronization signal acquisition of the master machine and each of the slave machines.
- the host and each of the slaves are connected by synchronous optical fibers.
- the host and each slave include: an amplifier and a collector, and the amplifier and the collector are integrated to form a chassis;
- the amplifier is used to amplify the voltage signal output by the load cell during the rail vehicle collision test to obtain the target voltage signal;
- the collector is used for collecting and storing the target voltage signal.
- the host is configured with 2 acquisition cards with 16 hardware channels, which can realize the continuous acquisition of voltage signals of all 32 hardware channels;
- Each of the slaves is configured with 3 acquisition cards with 16 hardware channels and 1 acquisition card with 8 hardware channels, which can realize the continuous acquisition of voltage signals of all 56 hardware channels.
- control system includes: a switch and a host computer, the host computer is connected to the data acquisition system through the switch, and the host computer is used to obtain each target from the data acquisition system through the switch. voltage signal, and determine the sensor number of the corresponding load cell based on the hardware channel corresponding to each of the target voltage signals, and record it as the target sensor number. a sensor coefficient corresponding to the target sensor number.
- the upper computer is connected to the data acquisition system through the switch via Gigabit Ethernet.
- the data acquisition system is connected to the force measuring sensor group through a collection cable, and the collection cable is installed on the installation hole of the sensor connection plate.
- the data acquisition system is internally loaded with a solid-state hard disk, and the target voltage signal is stored through the solid-state hard disk.
- the present invention discloses a rail vehicle crash test system, comprising: a sensor connection board, a force sensor group, a data acquisition system and a control system, each force sensor in the force sensor group is installed in a On one mounting hole of the sensor connection board, all load cells mounted on the sensor connection board form a rail vehicle collision wall.
- the present invention stores sensor coefficients and uniquely identified sensors by arranging a sensor ID chip in each load cell. number, and connect each load cell with a hardware channel of the data acquisition system.
- the data acquisition system obtains the voltage signal output by the corresponding load cell during the rail vehicle crash test through each hardware channel, and conducts the voltage signal analysis. Amplify the target voltage signal.
- the control system determines the target sensor number of the load cell corresponding to the corresponding hardware channel according to each target voltage signal stored in the data acquisition system, and selects the sensor number from the pre-stored sensor. In the corresponding relationship between the number and the sensor coefficient, the sensor coefficient corresponding to each target sensor number is determined.
- the present invention realizes the self-identification function of the rail vehicle crash test system, and does not need to manually determine and input the sensor coefficients of each force measuring sensor laid out in each crash test, thereby not only improving the work efficiency, but also effectively avoiding The system parameter setting is wrong.
- FIG. 1 is a schematic structural diagram of a rail vehicle crash test system disclosed in an embodiment of the present invention.
- the embodiment of the present invention discloses a disclosed crash test system for rail vehicles, comprising: a sensor connection board, a force measurement sensor group, a data acquisition system and a control system, and each force measurement sensor in the force measurement sensor group is installed on the sensor connection board On one of the mounting holes, all the load cells installed on the sensor connection board form the collision wall of the rail vehicle.
- the present invention stores the sensor coefficient and the sensor number representing the unique identification by arranging the sensor ID chip in each load cell. Connect each load cell to a hardware channel of the data acquisition system.
- the data acquisition system obtains the voltage signal output by the corresponding load cell during the rail vehicle crash test through each hardware channel, and amplifies the voltage signal to obtain the target.
- the control system determines the target sensor number of the load cell corresponding to the corresponding hardware channel according to each target voltage signal stored in the data acquisition system, and uses the pre-stored sensor number and sensor number to determine the target sensor number of the load cell. In the corresponding relationship of the coefficients, the sensor coefficient corresponding to each target sensor number is determined.
- the present invention realizes the self-identification function of the rail vehicle crash test system, and does not need to manually determine and input the sensor coefficients of each force measuring sensor laid out in each crash test, thereby not only improving the work efficiency, but also effectively avoiding The system parameter setting is wrong.
- a schematic structural diagram of a rail vehicle crash test system disclosed in an embodiment of the present invention includes: a sensor connection board 10 , a load cell group 20 , a data acquisition system 30 and a control system 40 .
- the sensor connection plate 10 is provided with installation holes, and the installation holes are used for arranging each load cell in the load cell group 20 and installing the acquisition cable and the like.
- the load cell group 20 includes N load cells, each load cell is mounted on a mounting hole of the sensor connection plate 10 , and all load cells mounted on the sensor connection plate 10 form a rail vehicle collision wall.
- the load cell group 20 includes N load cells, such as the measurement sensor 1, the load cell 2, the load cell 3, the load cell 4, . . . , the load cell N shown in FIG.
- Each load cell has a sensor ID chip, and the sensor ID chip stores a sensor coefficient and a sensor number representing a unique identifier.
- the sensor coefficient is used to represent the corresponding relationship between the voltage value and the sensor force value, and N is a positive integer.
- N is a positive integer, and the specific value is determined according to actual needs, which is not limited in the present invention.
- each load cell in the load cell group 20 is installed on the sensor connection plate 10
- the outgoing wires of each load cell are centrally arranged through the edge of the sensor connection plate 10.
- the port is connected to an external signal acquisition system.
- the number of hardware channels in the data acquisition system 30 is not less than the number of load cells, and each load cell is connected to a hardware channel.
- the target voltage signal is obtained by amplifying the voltage signal, and the target voltage signal is stored.
- the data acquisition system 30 is connected to the load cell group 20 through a collection cable, and the collection cable is installed on the installation hole of the sensor connection plate 10 .
- the data acquisition system 30 can continuously record the voltage signal output by the load cell group 20 for a long time.
- the data acquisition system 30 has the characteristics of shock resistance, shock and moisture resistance, and high and low temperature resistance, can be placed in a complex electromagnetic environment, and has a relevant CE certification test report.
- the data acquisition system 30 is equipped with a solid-state hard disk.
- the solid-state hard disk is not afraid of the coupling vibration of strong noise, which can avoid data loss caused by the coupling vibration of strong noise during the test process, prolong the service life, and improve the measurement reliability.
- the data acquisition system 30 includes: a master 31 and a plurality of slaves 32, the master 31 is connected to each slave 32, the master 31 generates a synchronous clock signal, and sends the synchronous clock signal to each slave 32, The synchronization signal acquisition of the master 31 and each slave 32 is realized.
- the master 31 and each slave 32 can be connected through a synchronization optical fiber, and the number of slaves 32 depends on the number of load cells included in the load cell group 20.
- the number of slaves 32 is shown in FIG. 1 .
- the four shown in the present invention are not limited here.
- the master 31 and each slave 32 can be connected in parallel using a dedicated master-slave synchronization board, and a synchronization optical fiber is used to transmit the synchronization clock signal to ensure that the physical clocks of the master 31 and each slave 32 are synchronized. Thereby improving the clock accuracy.
- both the host 31 and the slave 32 include: an amplifier and a collector, wherein the amplifier and the collector in the same host 31 or the same slave 32 are integrated to form a chassis.
- the amplifier is used to amplify the voltage signal output by the load cell during the rail vehicle crash test to obtain the target voltage signal;
- the collector is used to collect and store the target voltage signal.
- the design of the collector mainly realizes multi-channel, high-speed and high-precision synchronous acquisition.
- the collector adopts the master-slave setting based on the PTP protocol to achieve highly synchronous acquisition accuracy.
- the built-in solid-state hard disk of the host is used for local storage, which can realize the data streaming capacity of 350MB/s for a single machine, thus getting rid of the resource limitation of PC and operating system, and meeting the application requirements of high-speed multi-channel acquisition.
- the data acquisition system 30 amplifies the voltage signal output by the load cell group 20 during the rail vehicle crash test through the amplifiers in the host 31 and the slave 32 to obtain the target voltage signal, and collects the target voltage signal through the collector. and stored in the collector's solid-state hard drive.
- the host 31 can be configured with 2 acquisition cards with 16 hardware channels, which can realize the continuous acquisition of voltage signals of all 32 hardware channels and store them in the solid-state hard disk.
- Each slave 32 can be configured with 3 acquisition cards with 16 hardware channels and 1 acquisition card with 8 hardware channels, which can realize the continuous acquisition of voltage signals of all 56 hardware channels and store them in the solid-state hard disk.
- the data acquisition system 30 with 256 channels is preferentially selected according to the number of load cells included in the load cell group 20 .
- the control system 40 obtains each target voltage signal from the data acquisition system 30, and determines the sensor number of the corresponding load cell based on the hardware channel corresponding to each target voltage signal, and records it as the target sensor number, from the pre-stored sensor number. In the corresponding relationship between the number and the sensor coefficient, the sensor coefficient corresponding to each target sensor number is determined.
- control system 40 determines the sensor coefficient corresponding to each target sensor number, it can determine the voltage output by the load cell corresponding to the target sensor number according to the corresponding relationship between the voltage value represented by the sensor coefficient and the sensor force value.
- the sensor force value after signal conversion.
- control system 40 may include: a switch 41 and a host computer 42 , the host computer 42 is connected to the data acquisition system 30 through the switch 41 , and the host computer 42 is used to read each target from the solid-state hard disk of the data acquisition system 30 through the switch 41 voltage signal, and determine the sensor number of the corresponding load cell based on the hardware channel corresponding to each of the target voltage signals, and record it as the target sensor number. a sensor coefficient corresponding to the target sensor number.
- the host computer 42 is connected to the data acquisition system 30 through the switch 41 via a Gigabit Ethernet, and is specifically connected to a collector in the data acquisition system 30 .
- the present invention discloses a rail vehicle crash test system, comprising: a sensor connection board 10 , a load cell group 20 , a data acquisition system 30 and a control system 40 , each load cell in the load cell group 20 Installed on a mounting hole of the sensor connection board 10, all load cells installed on the sensor connection board 10 form a rail vehicle collision wall, the present invention stores sensor coefficients and representations by arranging a sensor ID chip in each load cell The uniquely identified sensor number, and each load cell is connected to a hardware channel of the data acquisition system 30, and the data acquisition system 30 obtains the voltage signal output by the corresponding load cell during the rail vehicle crash test through each hardware channel. , and amplify the voltage signal to obtain the target voltage signal.
- the control system 40 determines the target sensor of the load cell corresponding to the corresponding hardware channel according to each target voltage signal stored in the data acquisition system 30 number, and determine the sensor coefficient corresponding to each target sensor number from the pre-stored correspondence between the sensor number and the sensor coefficient.
- the present invention realizes the self-identification function of the rail vehicle crash test system, and does not need to manually determine and input the sensor coefficients of each force measuring sensor laid out in each crash test, thereby not only improving the work efficiency, but also effectively avoiding The system parameter setting is wrong.
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Abstract
一种轨道车辆碰撞测试系统，包括：传感器连接板（10）、测力传感器组（20）、数据采集系统（30）和控制系统（40），测力传感器组（20）中的每个测力传感器安装在传感器连接板（10）的一个安装孔上并与数据采集系统（30）的一个硬件通道连接，在每个测力传感器内设置传感器ID芯片来存储传感器系数和传感器编号，数据采集系统（30）通过每个硬件通道获取测力传感器在轨道车辆碰撞试验时输出的电压信号，并对电压信号进行放大得到目标电压信号，控制系统（40）根据每个目标电压信号确定对应的硬件通道所对应的测力传感器的目标传感器编号，并从传感器编号和传感器系数的对应关系中确定每个目标传感器编号对应的传感器系数，因此，无需人工参与确定和录入测试时各个传感器系数。
Description
本申请要求于2020年09月25日提交中国专利局、申请号为202011022307.3、发明名称为“一种轨道车辆碰撞测试系统”的国内申请的优先权，其全部内容通过引用结合在本申请中。
为保护列车成员的生命安全，避免列车碰撞事故的发生，研制耐撞性吸能列车成为目前世界各国最重要的研究方向。在列车碰撞安全性开发试验过程中，为了研究和提高车身的耐撞性，需要测定车辆碰撞时的撞力分布情况，以便分析撞击部位的结构和受力状况，从而为设计安全列车车身和改进优化车身结构提供试验依据。
目前通常采用轨道车辆碰撞测试系统研究碰撞事故以及对吸能车体进行安全评估。现有方案中，需要根据不同的碰撞测试需求，相应调整轨道车辆碰撞测试系统中各个测力传感器的布局。但是由于测力传感器数量较多，传统技术无法准确、便捷的实现测力传感器的硬件通道设置来对系统参数进行调整，因此通常需要大量人工参与，由人工确定和录入每次碰撞测试时布局的各个测力传感器的传感器系数，从而不仅导致工作效率低，而且容易出现系统参数设置错误的情况。
发明内容
有鉴于此，本发明公开一种轨道车辆碰撞测试系统，以实现轨道车辆碰撞测试系统的自识别功能，且无需人工确定和录入每次碰撞测试时布局的各个测力传感器的传感器系数，从而不仅提高工作效率，而且有效避免系统参数设置错误的情况。
一种轨道车辆碰撞测试系统，包括：传感器连接板、测力传感器组、数据采集系统和控制系统；
所述传感器连接板设置有安装孔；
所述测力传感器组包括：N个测力传感器，每个所述测力传感器安装在所述传感器连接板的一个所述安装孔上，所有安装在所述传感器连接板 上的所述测力传感器形成轨道车辆碰撞墙，其中，每个所述测力传感器具有传感器ID芯片，所述传感器ID芯片存储有传感器系数和表征唯一标识的传感器编号，所述传感器系数用于表示电压值和传感器力值的对应关系，N为正整数；
所述数据采集系统具有的硬件通道的数量不低于所述测力传感器的数量，每个所述测力传感器与一个所述硬件通道连接，所述数据采集系统通过每个所述硬件通道获取相对应的测力传感器在轨道车辆碰撞试验时输出的电压信号，并对所述电压信号进行放大得到目标电压信号，存储所述目标电压信号；
所述控制系统从所述数据采集系统获取各个所述目标电压信号，并基于每个所述目标电压信号对应的硬件通道确定相对应的测力传感器的传感器编号，并记为目标传感器编号，从预先存储的传感器编号和传感器系数的对应关系中，确定每个所述目标传感器编号对应的传感器系数。
可选的，所述数据采集系统包括：一台主机和多台从机，所述主机与各个所述从机连接，所述主机产生同步时钟信号，并将所述同步时钟信号发送至各个所述从机，实现所述主机和各个所述从机的同步信号采集。
可选的，所述主机和各个所述从机通过同步光线连接。
可选的，所述主机和每个从机均包括：放大器和采集器，所述放大器和所述采集器集成一体构成一个机箱；
所述放大器用于对测力传感器在轨道车辆碰撞试验时输出的电压信号进行放大，得到所述目标电压信号；
所述采集器用于采集和存储所述目标电压信号。
可选的，所述主机配置有16个硬件通道的采集卡2块，能够实现全部32个硬件通道的电压信号的连续采集；
每个所述从机配置16个硬件通道的采集卡3块和8个硬件通道的采集卡1块，能够实现全部56个硬件通道的电压信号的连续采集。
可选的，所述控制系统包括：交换机和上位机，所述上位机通过所述交换机与所述数据采集系统连接，所述上位机用于通过所述交换机从所述数据采集系统获取各个目标电压信号，并基于每个所述目标电压信号对应的硬件通道确定相对应的测力传感器的传感器编号，并记为目标传感器编 号，从预先存储的传感器编号和传感器系数的对应关系中，确定每个所述目标传感器编号对应的传感器系数。
可选的，所述上位机通过所述交换机经千兆以太网与所述数据采集系统连接。
可选的，所述数据采集系统与所述测力传感器组通过采集线缆连接，所述采集线缆安装在所述传感器连接板的所述安装孔上。
可选的，所述数据采集系统内部装载了固态硬盘，通过所述固态硬盘存储所述目标电压信号。
从上述的技术方案可知，本发明公开了一种轨道车辆碰撞测试系统，包括：传感器连接板、测力传感器组、数据采集系统和控制系统，测力传感器组中的每个测力传感器安装在传感器连接板的一个安装孔上，所有安装在传感器连接板上的测力传感器形成轨道车辆碰撞墙，本发明通过在每个测力传感器内设置传感器ID芯片来存储传感器系数和表征唯一标识的传感器编号，并将每个测力传感器与数据采集系统的一个硬件通道连接，数据采集系统通过每个硬件通道获取相对应的测力传感器在轨道车辆碰撞试验时输出的电压信号，并对电压信号进行放大得到目标电压信号，在进行轨道车辆碰撞测试时，控制系统根据数据采集系统存储的每个目标电压信号，确定对应的硬件通道所对应的测力传感器的目标传感器编号，并从预先存储的传感器编号和传感器系数的对应关系中，确定每个目标传感器编号对应的传感器系数。相对于传统方案，本发明实现了轨道车辆碰撞测试系统的自识别功能，且无需人工确定和录入每次碰撞测试时布局的各个测力传感器的传感器系数，从而不仅提高了工作效率，而且有效避免了系统参数设置错误的情况。
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的实施例，对于本领域普通技术人员来讲， 在不付出创造性劳动的前提下，还可以根据公开的附图获得其他的附图。
图1为本发明实施例公开的一种轨道车辆碰撞测试系统的结构示意图。
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明实施例公开了一种公开的轨道车辆碰撞测试系统，包括：传感器连接板、测力传感器组、数据采集系统和控制系统，测力传感器组中的每个测力传感器安装在传感器连接板的一个安装孔上，所有安装在传感器连接板上的测力传感器形成轨道车辆碰撞墙，本发明通过在每个测力传感器内设置传感器ID芯片来存储传感器系数和表征唯一标识的传感器编号，并将每个测力传感器与数据采集系统的一个硬件通道连接，数据采集系统通过每个硬件通道获取相对应的测力传感器在轨道车辆碰撞试验时输出的电压信号，并对电压信号进行放大得到目标电压信号，在进行轨道车辆碰撞测试时，控制系统根据数据采集系统存储的每个目标电压信号，确定对应的硬件通道所对应的测力传感器的目标传感器编号，并从预先存储的传感器编号和传感器系数的对应关系中，确定每个目标传感器编号对应的传感器系数。相对于传统方案，本发明实现了轨道车辆碰撞测试系统的自识别功能，且无需人工确定和录入每次碰撞测试时布局的各个测力传感器的传感器系数，从而不仅提高了工作效率，而且有效避免了系统参数设置错误的情况。
参见图1，本发明实施例公开的一种轨道车辆碰撞测试系统的结构示意图，该系统包括：传感器连接板10、测力传感器组20、数据采集系统30和控制系统40。
其中：
传感器连接板10设置有安装孔，所述安装孔用于布局测力传感器组20中的各个测力传感器以及安装采集线缆等。
测力传感器组20包括N个测力传感器，每个测力传感器安装在传感器连接板10的一个安装孔上，所有安装在传感器连接板10上的测力传感器形成轨道车辆碰撞墙。
具体的，测力传感器组20包括N个测力传感器，比如图1中示出的测量传感器1、测力传感器2、测力传感器3、测力传感器4，….，测力传感器N，每个测力传感器具有传感器ID芯片，所述传感器ID芯片中存储有传感器系数和表征唯一标识的传感器编号，所述传感器系数用于表示电压值和传感器力值的对应关系，N为正整数。
N为正整数，具体取值依据实际需要而定，本发明在此不做限定。
需要说明的是，在进行轨道车辆碰撞试验时，在将测力传感器组20中的各个测力传感器安装在传感器连接板10上后，各个测力传感器通过传感器连接板10一侧边缘集中布设出线口与外部信号采集系统相连。
数据采集系统30具有的硬件通道的数量不低于测力传感器的数量，每个测力传感器与一个硬件通道连接，数据采集系统30通过每个硬件通道获相应的测力传感器在轨道车辆碰撞试验时输出的电压信号，并对所述电压信号进行放大得到目标电压信号，存储所述目标电压信号。
可选的，数据采集系统30与测力传感器组20通过采集线缆连接，采集线缆安装在传感器连接板10的安装孔上。
需要说明的是，数据采集系统30可实现长时间连续记录测力传感器组20输出的电压信号。数据采集系统30具有抗震、冲击防潮和耐高低温的特点，能够放置在复杂的电磁环境中，并具有相关的CE认证测试报告。数据采集系统30的内部装载了固态硬盘，该固态硬盘不惧强噪声的耦合振动，能够避免试验过程中强噪声的耦合振动造成的数据丢失，延长使用寿命，提高测量可靠性。
具体的，数据采集系统30包括：一台主机31和多台从机32，主机31与各个从机32连接，主机31产生同步时钟信号，并将所述同步时钟信号发送至各个从机32，实现主机31和各个从机32的同步信号采集。
在实际应用中，主机31与各个从机32可以通过同步光纤连接，从机32 的数量依据测力传感器组20中包含的测力传感器的数量而定，比如，从机32的数量为图1中示出的四个，本发明在此不做限定。
需要特别说明的是，主机31与各个从机32之间可以使用专用的主从同步板实现并联，并使用同步光纤来传递同步时钟信号，以保证主机31与各个从机32的物理时钟同步，从而提高时钟精度。
本实施例中，主机31和从机32均包括：放大器和采集器，其中，同一主机31或同一从机32中的放大器和采集器集成一体构成一个机箱。
放大器用于对测力传感器在轨道车辆碰撞试验时输出的电压信号进行放大，得到目标电压信号；
采集器用于采集和存储目标电压信号。
采集器的设计主要实现多通道、高速和高精度的同步采集，为了保证高速多通道同步采集，采集器采用基于PTP协议的主从机设置实现高度同步的采集精度，采集到的海量数据可以通过主机内置的固态硬盘进行本地存储，能够实现单机350MB/s的数据流盘能力，从而摆脱了PC机和操作系统的资源限制困扰，满足了高速多通道采集的应用需求。
具体的，数据采集系统30通过主机31和从机32中的放大器对测力传感器组20在轨道车辆碰撞试验时输出的电压信号进行放大，得到目标电压信号，通过采集器对目标电压信号进行采集并存储至采集器的固态硬盘中。
在实际应用中，主机31可以配置16个硬件通道的采集卡2块，能够实现全部32个硬件通道的电压信号的连续采集，以及存储到固态硬盘中。
每台从机32可以配置16个硬件通道的采集卡3块和8个硬件通道的采集卡1块，能够实现全部56个硬件通道的电压信号的连续采集，以及存储到固态硬盘中。
本发明根据测力传感器组20中包含的测力传感器的数量，优先选择具有256通道的数据采集系统30。
控制系统40从数据采集系统30获取各个目标电压信号，并基于每个所述目标电压信号对应的硬件通道确定相对应的测力传感器的传感器编 号，并记为目标传感器编号，从预先存储的传感器编号和传感器系数的对应关系中，确定每个所述目标传感器编号对应的传感器系数。
需要说明的是，当控制系统40确定每个目标传感器编号对应的传感器系数后，就可以根据传感器系数表示的电压值和传感器力值的对应关系，确定目标传感器编号对应的测力传感器输出的电压信号转换后的传感器力值。
具体的，控制系统40可以包括：交换机41和上位机42，上位机42通过交换机41与数据采集系统30连接，上位机42用于通过交换机41从数据采集系统30的固态硬盘中读取各个目标电压信号，并基于每个所述目标电压信号对应的硬件通道确定相对应的测力传感器的传感器编号，并记为目标传感器编号，从预先存储的传感器编号和传感器系数的对应关系中，确定每个所述目标传感器编号对应的传感器系数。
可选的，上位机42通过交换机41经千兆以太网与数据采集系统30连接，具体与数据采集系统30中的采集器连接。
综上可知，本发明公开了一种轨道车辆碰撞测试系统，包括：传感器连接板10、测力传感器组20、数据采集系统30和控制系统40，测力传感器组20中的每个测力传感器安装在传感器连接板10的一个安装孔上，所有安装在传感器连接板10上的测力传感器形成轨道车辆碰撞墙，本发明通过在每个测力传感器内设置传感器ID芯片来存储传感器系数和表征唯一标识的传感器编号，并将每个测力传感器与数据采集系统30的一个硬件通道连接，数据采集系统30通过每个硬件通道获取相对应的测力传感器在轨道车辆碰撞试验时输出的电压信号，并对电压信号进行放大得到目标电压信号，在进行轨道车辆碰撞测试时，控制系统40根据数据采集系统30存储的每个目标电压信号，确定对应的硬件通道所对应的测力传感器的目标传感器编号，并从预先存储的传感器编号和传感器系数的对应关系中，确定每个目标传感器编号对应的传感器系数。相对于传统方案，本发明实现了轨道车辆碰撞测试系统的自识别功能，且无需人工确定和录入每次碰撞测试时布局的 各个测力传感器的传感器系数，从而不仅提高了工作效率，而且有效避免了系统参数设置错误的情况。
最后，还需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。
Claims (9)
- 一种轨道车辆碰撞测试系统，其特征在于，包括：传感器连接板、测力传感器组、数据采集系统和控制系统；所述传感器连接板设置有安装孔；所述测力传感器组包括：N个测力传感器，每个所述测力传感器安装在所述传感器连接板的一个所述安装孔上，所有安装在所述传感器连接板上的所述测力传感器形成轨道车辆碰撞墙，其中，每个所述测力传感器具有传感器ID芯片，所述传感器ID芯片存储有传感器系数和表征唯一标识的传感器编号，所述传感器系数用于表示电压值和传感器力值的对应关系，N为正整数；所述数据采集系统具有的硬件通道的数量不低于所述测力传感器的数量，每个所述测力传感器与一个所述硬件通道连接，所述数据采集系统通过每个所述硬件通道获取相对应的测力传感器在轨道车辆碰撞试验时输出的电压信号，并对所述电压信号进行放大得到目标电压信号，存储所述目标电压信号；所述控制系统从所述数据采集系统获取各个所述目标电压信号，并基于每个所述目标电压信号对应的硬件通道确定相对应的测力传感器的传感器编号，并记为目标传感器编号，从预先存储的传感器编号和传感器系数的对应关系中，确定每个所述目标传感器编号对应的传感器系数。
- 根据权利要求1所述的轨道车辆碰撞测试系统，其特征在于，所述数据采集系统包括：一台主机和多台从机，所述主机与各个所述从机连接，所述主机产生同步时钟信号，并将所述同步时钟信号发送至各个所述从机，实现所述主机和各个所述从机的同步信号采集。
- 根据权利要求2所述的轨道车辆碰撞测试系统，其特征在于，所述主机和各个所述从机通过同步光线连接。
- 根据权利要求2所述的轨道车辆碰撞测试系统，其特征在于，所述主机和每个从机均包括：放大器和采集器，所述放大器和所述采集器集成一体构成一个机箱；所述放大器用于对测力传感器在轨道车辆碰撞试验时输出的电压信号 进行放大，得到所述目标电压信号；所述采集器用于采集和存储所述目标电压信号。
- 根据权利要求2所述的轨道车辆碰撞测试系统，其特征在于，所述主机配置有16个硬件通道的采集卡2块，能够实现全部32个硬件通道的电压信号的连续采集；每个所述从机配置16个硬件通道的采集卡3块和8个硬件通道的采集卡1块，能够实现全部56个硬件通道的电压信号的连续采集。
- 根据权利要求1所述的轨道车辆碰撞测试系统，其特征在于，所述控制系统包括：交换机和上位机，所述上位机通过所述交换机与所述数据采集系统连接，所述上位机用于通过所述交换机从所述数据采集系统获取各个目标电压信号，并基于每个所述目标电压信号对应的硬件通道确定相对应的测力传感器的传感器编号，并记为目标传感器编号，从预先存储的传感器编号和传感器系数的对应关系中，确定每个所述目标传感器编号对应的传感器系数。
- 根据权利要求6所述的轨道车辆碰撞测试系统，其特征在于，所述上位机通过所述交换机经千兆以太网与所述数据采集系统连接。
- 根据权利要求1所述的轨道车辆碰撞测试系统，其特征在于，所述数据采集系统与所述测力传感器组通过采集线缆连接，所述采集线缆安装在所述传感器连接板的所述安装孔上。
- 根据权利要求1所述的轨道车辆碰撞测试系统，其特征在于，所述数据采集系统内部装载了固态硬盘，通过所述固态硬盘存储所述目标电压信号。
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