WO2021109820A1 - 时间同步的混合模拟、数字传感器数据采集系统及方法 - Google Patents

时间同步的混合模拟、数字传感器数据采集系统及方法 Download PDF

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WO2021109820A1
WO2021109820A1 PCT/CN2020/128231 CN2020128231W WO2021109820A1 WO 2021109820 A1 WO2021109820 A1 WO 2021109820A1 CN 2020128231 W CN2020128231 W CN 2020128231W WO 2021109820 A1 WO2021109820 A1 WO 2021109820A1
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digital
data
sensor
analog
hub
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French (fr)
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宁德志
孙毅超
张崇伟
吴镝
周青
李和银
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大连理工大学
成都科大胜英科技有限公司
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Priority to US17/278,934 priority Critical patent/US11474558B2/en
Publication of WO2021109820A1 publication Critical patent/WO2021109820A1/zh

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    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
    • G08C23/06—Non-electrical signal transmission systems, e.g. optical systems through light guides, e.g. optical fibres
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/04—Generating or distributing clock signals or signals derived directly therefrom
    • G06F1/12—Synchronisation of different clock signals provided by a plurality of clock generators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
    • H04Q9/04—Arrangements for synchronous operation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/04—Generating or distributing clock signals or signals derived directly therefrom
    • G06F1/14—Time supervision arrangements, e.g. real time clock

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  • the invention relates to the technical field of sensor monitoring, in particular to a time-synchronized hybrid analog and digital sensor data acquisition system and a signal processing method thereof.
  • Sensors are widely used in various industries such as river embankments, dams, machinery, bridges and buildings.
  • the sensors are used to detect the pressure, temperature, water level, wave height and other states of the measured object, and then the display device measures the sensor The value is displayed.
  • the technical problem to be solved by the present invention is to provide a clock synchronization digital sensing system and temperature measurement and force measurement methods that can remotely perform intelligent monitoring of a large number of multiple sensors, and solve the problem of heterogeneity in existing experiments and actual projects.
  • the sampling time between dissimilar sensors cannot be accurately synchronized, and the data collection has the problem of time difference.
  • it solves the problems of single function, low integration and labor consuming when the instruments of different sensors work separately. It can be directly connected to a variety of heterogeneous and heterogeneous sensors to realize synchronous collection and synchronous transmission, and the operation is simple and fast.
  • the invention greatly improves the accuracy and efficiency of synchronous acquisition, reduces labor costs, and has a very wide application prospect.
  • a time-synchronized hybrid analog and digital sensor data acquisition system including analog sensors, digital modules, digital sensors, hubs, local area network equipment, and data processing terminals; the hub connects data to the data processing terminal through the local area network equipment; analog sensors and digital modules connection.
  • the digitizing module includes a signal conditioning module, a signal amplifying module, and an A/D conversion module electrically connected in sequence through a control circuit, and also includes a data interface connected to a hub and an interface connected to a clock synchronization circuit integrated on the hub;
  • the hub generates a clock synchronization circuit for synchronizing the synchronization signal broadcast by the data processing terminal.
  • the hub generates the synchronization signal and is received by the digital module or digital sensor connected to it, thereby realizing the synchronization data of the analog sensor and the digital sensor collection.
  • the analog sensor detects the physical signal of the measured object and generates a corresponding analog signal, and then the analog signal is adjusted and amplified by the signal conditioning module and the signal amplifying module, and converted into a digital signal by the A/D conversion module.
  • the signal through A/D conversion adapts to the long-distance transmission of data, simplifies the complexity of multi-channel system network layout, reduces the error of signal measurement caused by long-distance transmission, the signal is stable, and the anti-interference ability is strong.
  • the clock synchronization circuit is used to collect all sensors in the same network according to a unified clock, and can unify the time dimension of multi-channel signal comparison in the parallel test of multiple sensors, so that the collected data has a unified reference point in the time dimension. Enhance comparability and scientificity, so that the collected and stored signals have a time dimension, which is conducive to signal analysis, processing and application.
  • the digital module with a clock source further includes an automatic identity recognition module, the identity recognition module is integrated on the control circuit of the digital module, and the sensor is automatically recognized after being connected to the network, making networking easier.
  • the identity recognition module is integrated on the control circuit of the digital module, and the sensor is automatically recognized after being connected to the network, making networking easier.
  • control circuit of the digital module is also integrated with a Soc chip, and the Soc chip can be programmed externally, so that the sensor data can be processed accordingly.
  • Soc chip can be programmed externally, so that the sensor data can be processed accordingly.
  • the sensor data can be compensated and so on.
  • the hub is a 485 hub that can convert the 485 bus interface of the sensor to the interface of the local area network, so as to facilitate the formation of a larger network system.
  • the 485 hub is networked locally, which simplifies the complexity of network wiring.
  • the local area network device includes a router, one end of the router may be data-connected with multiple 485 hubs, and the other end may be data-connected with a data processing terminal.
  • the data connection between the router and the data processing terminal is an optical fiber connection.
  • Optical fiber network transmission breaks through the traditional 485 transmission rate bottleneck, so that the signals of multiple hubs are concentrated on the spot and then transmitted through the wide area network through routing.
  • the present invention also provides a signal processing method for a time-synchronized hybrid analog and digital sensor data acquisition system, which includes the following steps:
  • the analog sensor and digital sensor in the system sense the value of the measured target, and perform digital compensation and clock synchronization control, and the measured value is digitally corrected and compensated;
  • the hub collects the data sensed by the analog sensor and the digital sensor processed in the first step through the data connection, and outputs it to the local area network device through the output terminal;
  • the local area network device integrates the data from the hub and transmits it to the data processing terminal for processing through the network;
  • the data processing terminal performs data comparison and visual display based on the time axis through the program, and outputs the monitoring results according to the monitoring needs.
  • the signal processing method of the time-synchronized hybrid analog and digital sensor data acquisition system further includes the data processing terminal performing parameter presets and issuing instructions to the digital sensor, and the digital sensor performs sensing feedback according to the parameter instruction.
  • the beneficial effect of the present invention is that a time-synchronized hybrid analog and digital sensor data acquisition system converts analog signals into digital signals through clock-synchronized analog sensors, digital modules, and digital sensors, and gives the sensed signal a time axis characteristic.
  • This enhances the comparability and scientificity of multiple signals, which is conducive to signal analysis, processing and application; through the identification module, each sensor is given a unique identity, so that the sensor can be automatically identified after it is connected to the network, and finally remote data processing is realized
  • the terminal locates and remotely monitors each sensor; through the integration of the Soc chip, the sensor is programmable and controlled to realize intelligence.
  • the system reduces the dependence on the network, and can continuously collect a large number of sensor data, so that the system has the advantages of reliability, stability, versatility and long-distance transmission .
  • Figure 1 is a schematic structural diagram of an embodiment of a time-synchronized hybrid analog and digital sensor data acquisition system according to the present invention
  • FIG. 2 is a schematic diagram of the circuit structure of a clock-synchronized digital sensor in an embodiment of a time-synchronized hybrid analog and digital sensor data acquisition system according to the present invention
  • Fig. 3 is a flowchart of an embodiment of a signal processing method of a time-synchronized hybrid analog and digital sensor data acquisition system according to the present invention.
  • a time-synchronized hybrid analog and digital sensor data acquisition system includes analog sensors, digital modules, digital sensors, hubs that network multiple sensors, local area network equipment, and data processing terminals.
  • the module includes a signal conditioning module, a signal amplifying module, and an A/D conversion module electrically connected in sequence through a control circuit, a data interface connected to the control circuit, a clock synchronization circuit integrated on the control circuit, the digitization module and the digitization sensor and hub
  • the hub is data-connected to the data processing terminal through a local area network device.
  • the digital module also includes an automatic identification module, which can be integrated on the control circuit, and the sensor is automatically identified after being connected to the network, making the networking easier.
  • an automatic identification module which can be integrated on the control circuit, and the sensor is automatically identified after being connected to the network, making the networking easier.
  • the digital module also includes a constant current control module for supplying power to the sensor.
  • the control circuit also integrates a Soc chip, and the Soc chip can be programmed externally, so that the sensor data can be processed accordingly. For example, by setting an algorithm program in the Soc chip, the sensor data can be compensated and so on.
  • the hub is a 485 hub that can convert the 485 bus interface of the sensor to the interface of the local area network, so as to facilitate the formation of a larger network system.
  • the 485 hub is networked locally, which simplifies the complexity of network wiring.
  • the local area network equipment includes a router.
  • One end of the router can be data-connected with multiple 485 hubs, and the other end can be data-connected with a data processing terminal.
  • the data connection between the router and the data processing terminal is an optical fiber connection.
  • Optical fiber network transmission breaks through the bottleneck of the traditional 485 transmission rate, so that the signals of multiple hubs are concentrated and transmitted through the wide area network through routing.
  • the present invention also provides a time-synchronized hybrid analog and digital sensor data acquisition system signal processing method, due to sensor initialization Operation, data processing terminal startup and operation programs, etc., are common knowledge and software program design issues, and are not described.
  • this signal processing method includes the following steps:
  • the analog sensor and digital sensor in the system sense the value of the measured target, and perform digital compensation and clock synchronization control, and the measured value is digitally corrected and compensated;
  • the hub collects the data sensed by the analog sensor and the digital sensor processed in the first step through the data connection, and outputs it to the local area network device through the output terminal;
  • the local area network device integrates the data from the hub and transmits it to the data processing terminal for processing through the network;
  • the data processing terminal performs data comparison and visual display based on the time axis through the program, and outputs the monitoring results according to the monitoring needs.
  • the received sensor data can be sorted into tables, curves, and acousto-optic signals to provide operators with alarms, analyze and study observation data, etc.
  • the signal processing method of the time-synchronized hybrid analog and digital sensor data acquisition system further includes the data processing terminal performing parameter presets and issuing instructions to the digital sensor, and the digital sensor performs sensing feedback according to the parameter instruction, and returns Operating data or status.

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  • Physics & Mathematics (AREA)
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Abstract

时间同步的混合模拟、数字传感器数据采集系统及方法，包括模拟传感器、数字化模块、数字化传感器、将多个异质、异种传感器组网的集线器、局域网设备、数据处理终端，解决了在现有的实验和实际工程中，不同传感器之间的采样时间不能精确同步，数据采集存在时差无法比对的问题，同时解决了不同传感器的仪器分别工作时功能单一、集成度不高、耗费人力的问题。可直接接入多种异质、异种传感器实现同步采集、同步传输、操作简单快捷，较大地提高了同步采集的时间精度、幅值精度和效率，降低了人工成本，具有非常广泛的应用前景。

Description

时间同步的混合模拟、数字传感器数据采集系统及方法 技术领域
本发明涉及传感器监测技术领域，具体涉及一种时间同步的混合模拟、数字传感器数据采集系统及其信号处理方法。
 背景技术
传感器广泛应用于河堤、大坝、机械、桥梁和建筑等各个行业，通过传感器来检测被测对象的压力、温度、水位、波高等多种状态，然后再由显示设备对传感器所测得的值进行显示。
现有传感器一般都采用模拟信号的方式对测值进行输出。由于模拟信号在沿线路的传输过程中会受到外界的和通信系统内部的各种噪声干扰，噪声和信号混合后难以分开，从而使得通信质量下降。线路越长，噪声的积累也就越多。从而造成所测得的数据的精度低。另外，由于模拟信号特性的限制，很难实现对多个传感器数值的组网对比，使通过监测压力值信号进行对比分析的难度较大，且难以实现信号数据的长期大批量存档。
随着数字化的发展应用，原有的通过模拟信号感测数据的传统传感器正逐渐被传输距离远、便于计算机处理的数字化传感器所替代。虽然数字化传感器有明显的应用优势，但在对一些大型项目、特别是大量传感器共同监测的项目中，组网对数据带宽、网络稳定等方面，都提出了很高的要求。从现有技术来看，多路传感器信号传输组网及其信号处理方法还不够成熟。
 技术问题
本发明要解决的技术问题在于提供一种可远程对多路大量传感器进行智能化监控的时钟同步数字化传感系统及测温、测力方法，解决在现有的实验和实际工程中，异质、异种传感器之间的采样时间不能精确同步，数据采集存在时差的问题，同时解决不同传感器的仪器分别工作时功能单一、集成度不高、耗费人力的问题。可直接接入多种异质、异种传感器实现同步采集、同步传输、操作简单快捷。本发明较大地提高了同步采集的精度和效率，降低了人工成本，具有非常广泛的应用前景。
 技术解决方案
为实现上述目的，本发明采用的技术方案是：
时间同步的混合模拟、数字传感器数据采集系统，包括模拟传感器、数字化模块、数字化传感器、集线器、局域网设备、数据处理终端；所述集线器通过局域网设备与数据处理终端进行数据连接；模拟传感器与数字化模块连接。
所述数字化模块包括通过控制电路依次电连接的信号调理模块、信号放大模块、A/D转换模块，还包括与集线器连接的数据接口、与集成于集线器上的时钟同步电路连接的接口；
所述集线器产生时钟同步电路，用于将数据处理终端所广播的同步信号同步，集线器产生该同步信号，并由其所连接的数字化模块或数字化传感器接收，从而实现模拟传感器和数字化传感器的同步数据采集。
所述模拟传感器检测被测对象的物理信号，并生成相应的模拟信号，然后将所述的模拟信号经信号调理模块、信号放大模块调理放大，由A/D转换模块转换为数字信号。通过A/D转换的信号，适应数据的远距离传输，简化多路系统布网的复杂度，减小信号测量因远距离传输导致的误差，信号稳定，抗干扰能力强。同时，所述时钟同步电路用于在同一网络的所有传感器按统一时钟进行采集，可在多路传感器并联测试中统一多路信号对比的时间维度，使采集数据在时间维度有统一参考点，增强可比性及科学性，使采集存储的信号具有时间维度，利于信号的分析、处理和应用。
优选的，所述带有时钟源的数字化模块还包括身份自动识别模块，所述身份识别模块集成于数字化模块的控制电路上，传感器接入网络后被自动识别，使组网更容易。
优选的，所述数字化模块的控制电路还集成了Soc芯片，外部可对Soc芯片进行编程，从而对传感器数据进行相应处理。如，通过在Soc芯片中设置算法程序，对传感器数据进行补偿运算等。
优选的，所述集线器为可将传感器的485总线接口转换为局域网的接口的 485集线器，以方便组成更大的网络系统。485集线器就地组网，简化了布网线路的复杂度。
优选的，所述局域网设备包括路由器，路由器一端可与多个485集线器数据连接，另一端与数据处理终端数据连接。
优选的，所述路由器与数据处理终端的数据连接为光纤连接。光纤网络传输，突破传统485传输速率瓶颈，使多个集线器信号就地集中后通过路由经广域网络传输。
另外，本发明还提供时间同步的混合模拟、数字传感器数据采集系统的信号处理方法，包括如下步骤：
第一步，系统中的模拟传感器和数字化传感器感测受测目标的值，并进行数字化补偿和时钟同步控制，将受测值进行数字化矫正和补偿处理；
第二步，集线器通过数据连接，将第一步处理后的模拟传感器和数字化传感器感测到的数据进行集中，通过输出端输出给局域网设备；
第三步，局域网设备将集线器传来的数据综合后，通过网络传输到数据处理终端进行处理；
第四步，数据处理终端通过程序进行基于时间轴的数据比较和可视化显示，根据监测需要输出监测结果。
优选的，所述时间同步的混合模拟、数字传感器数据采集系统的信号处理方法还包括数据处理终端对数字化传感器进行参数预设和发出指令，数字化传感器根据参数指令进行感测反馈。
 有益效果
本发明的有益效果为，时间同步的混合模拟、数字传感器数据采集系统，通过时钟同步的模拟传感器及数字化模块、数字化传感器将模拟信号转化为数字信号，并赋予感测的信号以时间轴特征，从而增强了多路信号的可比性及科学性，利于信号的分析、处理和应用；通过身份识别模块，赋予每一个传感器唯一身份标识，使传感器入网后即可被自动识别，最终实现远程数据处理终端对每一传感器的定位及远程监控；通过集成Soc芯片，使传感器可编程控制，实现了智能化。通过485集线器、数据存储收集器、局域网等设计，使系统降低了对网络的依赖性，能对大量传感器数据进行持续采集，从而使系统具有可靠性、稳定性、广泛性和远距离传输的优点。
 附图说明
图1为本发明一种时间同步的混合模拟、数字传感器数据采集系统实施例的结构示意图；
图2为本发明一种时间同步的混合模拟、数字传感器数据采集系统实施例的时钟同步数字化传感器的电路结构示意图；
图3为本发明一种时间同步的混合模拟、数字传感器数据采集系统信号处理方法实施例的流程图。
 本发明的实施方式
以下结合附图对本发明的优选实施例进行进一步详细说明。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作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。
下面结合附图和具体实施方式对本发明进行进一步详细说明。
参照图1、图2所示，时间同步的混合模拟、数字传感器数据采集系统，包括模拟传感器、数字化模块、数字化传感器、将多个传感器组网的集线器、局域网设备、数据处理终端，所述数字化模块包括通过控制电路依次电连接的信号调理模块、信号放大模块、A/D转换模块，与控制电路连接的数据接口，集成于控制电路上的时钟同步电路，所述数字化模块和数字化传感器与集线器数据连接，所述集线器通过局域网设备与数据处理终端数据连接。
参照图2所示，所述数字化模块还包括身份自动识别模块，所述身份识别模块可集成于控制电路上，传感器接入网络后被自动识别，使组网更容易。
所述数字化模块还包括恒流控制模块，用于给传感器供电。
所述控制电路还集成了Soc芯片，外部可对Soc芯片进行编程，从而对传感器数据进行相应处理。如，通过在Soc芯片中设置算法程序，对传感器数据进行补偿运算等。
本实施例中，所述集线器为可将传感器的485总线接口转换为局域网的接口的485集线器，以方便组成更大的网络系统。485集线器就地组网，简化了布网线路的复杂度。
所述局域网设备包括路由器，路由器一端可与多个485集线器数据连接，另一端与数据处理终端数据连接。
所述路由器与数据处理终端的数据连接为光纤连接。光纤网络传输，突破传统485传输速率瓶颈，使多个集线器信号集中后通过路由经广域网络传输。
参照图1、图2、图3所示，结合上述时间同步的混合模拟、数字传感器数据采集系统，本发明还提供了时间同步的混合模拟、数字传感器数据采集系统的信号处理方法，由于传感器初始化运行、数据处理终端启动运行程序等均为公知常识及软件程序设计问题，在于不作叙述，具体地，这种信号处理方法包括如下步骤：
第一步，系统中的模拟传感器和数字化传感器感测受测目标的值，并进行数字化补偿和时钟同步控制，将受测值进行数字化矫正和补偿处理；
第二步，集线器通过数据连接，将第一步处理后的模拟传感器和数字化传感器感测到的数据进行集中，通过输出端输出给局域网设备；
第三步，局域网设备将集线器传来的数据综合后，通过网络传输到数据处理终端进行处理；
第四步，数据处理终端通过程序进行基于时间轴的数据比较和可视化显示，根据监测需要输出监测结果。
这里，通过数据处理终端的程序处理，可将接收的传感器数据整理为表格、曲线、声光信号，向操作人员提供报警、分析研究观测数据等情况。
参照图3所示，所述时间同步的混合模拟、数字传感器数据采集系统的信号处理方法还包括数据处理终端对数字化传感器进行参数预设和发出指令，数字化传感器根据参数指令进行感测反馈，返回操作数据或状态。
最后应说明的是：以上所述实施例仅为本发明的优选实施例，并不用于限制本发明，尽管参照前述实施例对本发明进行了详细的说明，对于本领域的技术人员来说，其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (7)

  1. 时间同步的混合模拟、数字传感器数据采集系统，其特征在于，包括模拟传感器、数字化模块、数字化传感器、集线器、局域网设备、数据处理终端；所述集线器通过局域网设备与数据处理终端进行数据连接；模拟传感器与数字化模块连接，
    所述数字化模块包括通过控制电路依次电连接的信号调理模块、信号放大模块、A/D转换模块，还包括与集线器连接的数据接口、与集成于集线器上的时钟同步电路连接的接口；
    所述集线器产生时钟同步电路，用于将数据处理终端所广播的同步信号同步，集线器产生该同步信号，并由其所连接的数字化模块或数字化传感器接收，从而实现模拟传感器和数字化传感器的同步数据采集。
  2. 根据权利要求1所述的时间同步的混合模拟、数字传感器数据采集系统，其特征在于，所述的数字化模块还包括身份识别模块。
  3. 根据权利要求1所述的时间同步的混合模拟、数字传感器数据采集系统，其特征在于，所述的数字化模块还集成了Soc芯片。
  4. 根据权利要求1所述的时间同步的混合模拟、数字传感器数据采集系统，其特征在于，所述集线器为485集线器，用于将模拟传感器和数字化模块的485总线数据接口转换为局域网的数据接口。
  5. 采用权利要求1-4任一所述的时间同步的混合模拟、数字传感器数据采集系统的信号处理方法，其特征在于，包括如下步骤：
    第一步，系统中的模拟传感器和数字化传感器感测受测目标的值，并进行数字化补偿和时钟同步控制，将受测值进行数字化矫正和补偿处理；
    第二步，集线器通过数据连接，将第一步处理后的模拟传感器和数字化传感器感测到的数据进行集中，通过输出端输出给局域网设备；
    第三步，局域网设备将集线器传来的数据综合后，通过网络传输到数据处理终端进行处理；
    第四步，数据处理终端通过程序进行基于时间轴的数据比较和可视化显示，根据监测需要输出监测结果。
  6. 根据权利要求5所述的信号处理方法，其特征在于，还包括数据处理终端对数字化传感器进行参数预设和发出指令，数字化传感器根据参数指令进行感测反馈。
  7. 根据权利要求5或6所述的信号处理方法，其特征在于，第一步中数字化矫正和补偿处理方法为最小二乘法曲线拟合、多项式曲线拟合、折线式拟合、查表式插值拟合中的一种。
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