Multi-type safety monitoring sensor measurement module

Abstract

The utility model provides a multi-type safety monitoring sensor measurement module, and belongs to the technical field of sensor information measurement modules. The module comprises a main control circuit, a storage unit, a power supply control unit, a channel switching unit, an analog quantity acquisition unit, a differential resistance measurement unit, a vibrating wire signal acquisition unit, a switching value acquisition unit and a digital quantity signal acquisition unit. The output end of the channel switching unit is connected with the master control circuit. The output end of the master control circuit is connected with the storage unit and the power supply control unit. The input end of the channel switching unit is respectively connected with the analog quantity acquisition unit, the differential resistance measurement unit, the vibrating wire signal acquisition unit, the switching value acquisition unit and the digital quantity signal acquisition unit; the analog quantity acquisition unit, the differential resistance measurement unit, the vibrating wire signal acquisition unit, the switching value acquisition unit and the digital quantity signal acquisition unit are connected with the safety monitoring sensor through cables. According to the invention, equipment cost can be saved, various sensors can be compatible, and sensor information can be accurately identified.

Description

Technical Field

[0001] This application belongs to the technical field of sensor information measurement modules, and particularly relates to a measurement module for various types of safety monitoring sensors. Background Art

[0002] During the construction process, some safety monitoring sensors need to be cast into the concrete together with the construction, or their installation positions will be buried by the construction. Since each sensor has its own unique identification number and calibration parameters, and the number and calibration parameters are corresponding, when the calibration parameters are lost, it is impossible to calculate the collected data and it is necessary to re-match through the number. After the construction is completed, it is impossible to directly observe the sensors. If the sensor number parameter information is lost later, it will cause the sensor data to be unusable and the recognition accuracy of the sensor information is not high.

[0003] At the same time, after the construction is completed, since it is impossible to directly observe the working conditions of the sensors, when the data acquisition signal is abnormal, it is impossible to determine whether the abnormality is caused by sensor failure or wiring breakage and other factors, and it is difficult to obtain the status of the sensors and cables.

[0004] In addition, at present, the sensor information acquisition module has poor compatibility with the signal acquisition channels of various sensors. When multiple types of sensors need to be collected at the project site, multiple acquisition modules need to be used in combination, and the equipment cost is relatively high. Summary of the Utility Model

[0005] Therefore, this application provides a measurement module for various types of safety monitoring sensors, which helps to solve the problems of low recognition accuracy of sensor information, difficulty in obtaining the status of sensors and cables, and poor compatibility of signal acquisition channels for various sensors in the existing sensor information measurement module.

[0006] To achieve the above objectives, this application adopts the following technical solutions:

[0007] A measurement module for various types of safety monitoring sensors provided by this application includes:

[0008] A main control circuit, a storage unit, a power control unit, a channel switching unit, an analog quantity acquisition unit, a differential resistance measurement unit, a vibrating wire signal acquisition unit, a switch quantity acquisition unit, and a digital quantity signal acquisition unit;

[0009] The main control circuit is connected to the channel switching unit, and the output end of the main control circuit is respectively connected to the storage unit and the power control unit;

[0010] The input end of the channel switching unit is respectively connected to the analog quantity acquisition unit, the differential resistance measurement unit, the vibrating wire signal acquisition unit, the switch quantity acquisition unit, and the digital quantity signal acquisition unit;

[0011] The power control unit is respectively connected to the analog quantity acquisition unit, the differential resistance measurement unit, the vibrating wire signal acquisition unit, the digital input acquisition unit, and the digital quantity signal acquisition unit;

[0012] The analog quantity acquisition unit, the differential resistance measurement unit, the vibrating wire signal acquisition unit, the digital input acquisition unit, and the digital quantity signal acquisition unit are all connected to the safety monitoring sensors through communication cables;

[0013] The safety monitoring sensors include analog signal sensors, differential resistance sensors, digital sensors, switch sensors, and vibrating wire sensors.

[0014] Further, the measurement module further includes a communication unit, which is connected to the main control circuit and is used for sending sensor information and receiving control instructions.

[0015] Further, a power supply module is further included, and the power supply module is connected to the main control circuit.

[0016] Further, a host computer is further included, and the host computer is connected to the communication unit and is used for obtaining sensor information and sending control instructions.

[0017] Preferably, the communication unit is specifically one of a 4G communication unit, a Bluetooth communication unit, a Lora communication unit, an RS485 communication unit, and an RS232 communication unit.

[0018] Preferably, the power supply module is specifically one of a DC power supply, an AC power supply, or a solar power supply.

[0019] Further, a module wake-up unit is further included, and the module wake-up unit is connected to the main control circuit.

[0020] The present application adopts the above technical solutions and at least has the following beneficial effects:

[0021] A measurement module for various types of safety monitoring sensors provided by the present application includes a main control circuit, a storage unit, a power control unit, a channel switching unit, an analog acquisition unit, a differential resistance measurement unit, a vibrating wire signal acquisition unit, a digital input acquisition unit, and a digital signal acquisition unit. Among them, by setting a channel switching unit in the measurement module and connecting the input ends of the channel switching unit to the analog acquisition unit, the differential resistance measurement unit, the vibrating wire signal acquisition unit, the digital input acquisition unit, and the digital signal acquisition unit respectively, the channel switching unit is used to select and access the acquisition channels of the corresponding acquisition units, realizing the multiplexing of the acquisition channels. At the same time, when the above-mentioned acquisition units are connected to sensors of corresponding signal types, the acquisition units can identify the sensor signals of corresponding types. Furthermore, the main control circuit can obtain sensor information and parameters by communicating with the acquisition units, realizing the accurate identification and compatible acquisition of information of various types of sensors by the measurement module. In addition, the present application measures the resistance values of the connected sensors and cables through the analog acquisition unit and the differential resistance measurement unit, and judges whether the connection status of the current sensors and cables is normal according to the measurement results, realizing the fault location of the sensors and cables.

[0022] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art.

[0024] Figure 1 It is a circuit structure diagram of a measurement module for various types of safety monitoring sensors provided by an exemplary embodiment of the present invention;

[0025] ATTACHMENT Figure 1 In the figure: 1 - main control circuit, 2 - storage unit, 3 - power control unit, 4 - channel switching unit, 5 - analog acquisition unit, 6 - differential resistance measurement unit, 7 - vibrating wire signal acquisition unit, 8 - digital input acquisition unit, 9 - digital signal acquisition unit, 10 - communication unit. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In order to make the purpose, technical solutions, and advantages of the present application clearer, the technical solutions of the present application will be described in detail below.

[0027] Please refer to Figure 1 , Figure 1 which is a circuit structure diagram of a measurement module for various types of safety monitoring sensors shown according to an exemplary embodiment. As Figure 1 shown, a measurement module for various types of safety monitoring sensors provided by the present application includes:

[0028] The main control circuit, storage unit, power control unit, channel switching unit, analog quantity acquisition unit, differential resistance measurement unit, vibrating wire signal acquisition unit, digital input unit, and digital signal acquisition unit; among which,

[0029] The main control circuit is connected to the channel switching unit, and the output terminals of the main control circuit are respectively connected to the storage unit and the power control unit;

[0030] The input terminals of the channel switching unit are respectively connected to the analog quantity acquisition unit, differential resistance measurement unit, vibrating wire signal acquisition unit, digital input unit, and digital signal acquisition unit;

[0031] The power control unit is respectively connected to the analog quantity acquisition unit, differential resistance measurement unit, vibrating wire signal acquisition unit, digital input unit, and digital signal acquisition unit;

[0032] The analog quantity acquisition unit, differential resistance measurement unit, vibrating wire signal acquisition unit, digital input unit, and digital signal acquisition unit are all connected to the safety monitoring sensor through communication cables ( Figure 1 not shown in the figure);

[0033] The safety monitoring sensor includes an analog signal sensor, a differential resistance sensor, a digital sensor, a switch sensor, and a vibrating wire sensor.

[0034] Among them, when the above-mentioned acquisition unit is working, it can pre-configure the sensor information to be acquired by the device. At the beginning of the acquisition, the main control circuit switches the current acquisition channel to the acquisition type of the preset safety monitoring sensor through the channel switching unit, such as setting the acquisition channel as a digital signal channel. When the above-mentioned acquisition unit detects the access of the corresponding sensor, the main control circuit will control the corresponding power supply output by the power control unit according to the acquisition method of the sensor, and control the corresponding acquisition unit to collect sensor information.

[0035] After the sensor information acquisition is completed, the main control circuit stores the data collected this time in the storage medium of the local storage unit through the local storage unit, which is convenient for identifying sensor failures or cable status through the sensor information.

[0036] Specifically, the type classification of the safety monitoring sensor is based on the type of signal output by the sensor. The analog signal sensor outputs an analog quantity signal, the differential resistance sensor outputs a differential resistance signal, the digital sensor outputs a digital quantity signal, the switch sensor outputs a digital input signal, and the vibrating wire sensor outputs a vibrating wire signal.

[0037] The analog acquisition unit is specifically an analog acquisition device, which is an intelligent acquisition module used to collect 0-5V voltage signals and 4-20mA current signals. Its main principle is to collect and input voltage and current signals, and then connect to the upper computer PC through a 485 communication interface. The communication protocol uses the MODBUS RTU protocol of the industrial communication standard.

[0038] The digital signal acquisition unit is specifically a digital signal collector, which is a device that converts sensor-measured digital signals into computer-readable data. It can assist engineers in effectively collecting and analyzing sensor data from different devices, thereby completing various monitoring and control tasks. Its main working principle is to convert digital signals into a binary format readable by a computer. Among them, the input signal can be of digital or analog type, and the output can also be in the form of digital or analog signals.

[0039] The vibrating wire signal acquisition unit is specifically a vibrating wire sensor measurement module, which can read the electronic tag built into the vibrating wire sensor to obtain the digital information of the sensor (such as sensor model, range, K value, number, factory frequency, etc.).

[0040] The differential resistance measurement unit is specifically an existing differential resistance measurement module. The differential resistance measurement unit specializes in collecting data signals of differential resistance sensors. The differential resistance measurement unit is a device used to automatically collect signals of differential resistance type sensors and other resistance type sensors. It has high measurement accuracy and complete functions, and can be responsible for the acquisition and processing of differential resistance signals and the auxiliary diagnosis of cable status at the same time. The technical parameters of the differential resistance measurement unit may include the number of measurement channels, the number of differential resistance sensors connected, the number of resistance sensors connected, the resistance measurement range, the resistance sensitivity, and the full-connection cycle measurement time, etc. A typical application scenario of the differential resistance measurement unit is in the power system, used to monitor the operating status of power equipment such as transformers and motors. The sensor signals collected by the differential resistance measurement unit can provide information about the health status of power equipment, such as the temperature, vibration, and leakage inside the equipment. This information can help operators detect potential problems in a timely manner and take necessary maintenance measures to avoid equipment failures and outages.

[0041] Preferably, in one embodiment, the principle of the differential resistance measurement unit of the present application for assisting in diagnosing the cable state is generally as follows: collect the actual resistance measurement value of the differential resistance sensor from the connection cable to the differential resistance measurement unit. The resistance value from the differential resistance sensor to the differential resistance measurement unit through the connection cable can be calculated or estimated in advance. Compare this resistance value with the actual resistance measurement value to determine whether it is a sensor failure or a cable failure. For example, if the resistance measurement value is normal, it may be that the instrument is damaged or has water ingress. If the resistance measurement value is very large or infinite, it may be that the cable is open-circuited. If the resistance measurement value is very small, it may be that the cable is short-circuited. In some other embodiments of the present application, an existing multimeter can be used as the differential resistance measurement unit to measure the resistance value from the differential resistance sensor to the differential resistance measurement unit.

[0042] The digital input unit is specifically a digital input collector, and its collected signals are high and low level triggers and digital signals. Its basic principle is to detect the voltage signal on the input port line to determine whether there is a digital signal on this port, so as to realize the collection of this signal. The digital input collector usually includes an input port, a processing unit, an output port, and a power supply, etc. Among them, the input port is used to receive the collected signal, the output port is used to output the collected data, and the processing unit is responsible for processing and analyzing the collected original data.

[0043] The working process of the digital input collector is usually divided into two parts: data collection and signal judgment. Specifically, its working process includes the following steps:

[0044] 1. Input port detection: The digital input collector first detects the voltage signal on the input port to determine whether there is a digital signal.

[0045] 2. Signal collection: If a digital signal is detected on the input port, the digital input collector will collect this signal and transmit the collected original data to the processing unit.

[0046] 3. Signal processing: The processing unit is responsible for processing and analyzing the collected original data, obtaining the required key data, and storing it in the internal memory.

[0047] 4. Data output: The collector outputs the processed data through the output port for the user to view and use.

[0048] The storage unit is specifically a memory, which can be a semiconductor memory, a magnetic surface memory, an optical memory, etc.

[0049] Among them, the channel switching unit of the present application is used to switch channels between the signal acquisition channels corresponding to the above-mentioned multiple acquisition units, and switch the signal accessed by the main control circuit from one channel to another. The channel switching unit of the present application can be specifically implemented by a data acquisition card or a digital signal processor. The data acquisition card has a channel switching function and can select the channel to be acquired according to needs. The digital signal processor (DSP) realizes channel switching through programming to select between different input signals. The working principle of its switching signal acquisition channels is as follows: Initialization: Before starting, the DSP needs to be initialized first. This includes setting the required registers, loading the program, and configuring the input and output ports, etc. Input signal selection: After initialization is completed, the DSP can select the input signal to be acquired according to needs. This can be achieved through programming, for example, using the GPIO (General Purpose Input / Output) port of the DSP to control analog switches or electronic switches. Channel switching: Once the input signal to be acquired is selected, the DSP will control the analog switch or electronic switch through programming to switch the input signal to the ADC (Analog-to-Digital Converter) port of the DSP.

[0050] Further, when accessing sensors, the analog quantity acquisition unit accesses analog signal sensors and acquires analog quantity signals of the analog signal sensors. The differential resistance measurement unit accesses differential resistance sensors and acquires differential resistance signals of the differential resistance sensors. The vibrating wire signal acquisition unit accesses vibrating wire sensors and acquires vibrating wire signals of the vibrating wire sensors. The digital quantity signal acquisition unit accesses digital sensors and acquires digital quantity signals of the digital sensors. The switch quantity acquisition unit accesses switch sensors and acquires switch quantity signals of the switch sensors.

[0051] The main control circuit is specifically a PLC controller or an ARM series main control board, which is used to control the above-mentioned acquisition units to work according to a preset logic, is responsible for the processing of data and control instructions, and is also responsible for communicating with the sensor identification chip to obtain sensor information and parameters.

[0052] In addition to normally collecting sensor data, the multi-type safety monitoring sensor measurement module provided by this application can automatically identify the currently connected sensors through a communication cable, including parameters such as sensor device numbers and calibration information. It can remotely control the multi-type safety monitoring sensor measurement module to identify the connected sensors through a cloud platform or a host computer. The multi-type safety monitoring sensor measurement module receives instructions sent by the host computer or the cloud platform, controls the corresponding acquisition unit to work to identify the sensor signals, and can obtain sensor information at any time as long as the sensor is working properly. At the same time, this application measures the resistance values of the connected sensors and cables through the multi-type safety monitoring sensor measurement module, and judges whether the connection status of the current sensors and cables is normal according to the measured resistance values, achieving the effect of fault location. The signal acquisition channel of this application has a multiplexing function. The channel switching unit is used to specify the signal type of the currently connected sensor in the channel, and automatically switches the subsequent measurement circuit to achieve the purpose of collecting multiple types of sensors through one channel.

[0053] Further, in one embodiment, referring to Figure 1 , the measurement module of this application further includes a communication unit, and the communication unit is connected to the main control circuit for sending sensor information and receiving control instructions.

[0054] Among them, after the sensor information is collected, the main control circuit can also upload the sensor information to the background terminal, the host computer or a third-party terminal platform through the communication unit to achieve data sharing or facilitate data background analysis of the sensor information.

[0055] Further, in one embodiment, the measurement module of this application further includes a power supply module, and the power supply module is connected to the main control circuit. The power supply module is used to supply power to the entire measurement module.

[0056] Among them, the power supply module is specifically one of a DC power supply, an AC power supply or a solar power supply. The DC power supply, the AC power supply and the solar power supply are externally provided power supplies.

[0057] In addition, the power supply module can also be powered by an internal battery. At the same time, it can also be powered by a combination of an internal battery and an external power supply, which can effectively adapt to the external environment. When the external power supply is interrupted, the internal battery can still be used for power supply to avoid the impact of power failure on the measurement module.

[0058] Further, in one embodiment, the measurement module of this application further includes a host computer, and the host computer is connected to the communication unit for obtaining sensor information and sending control instructions.

[0059] Among them, the host computer can analyze the uploaded sensor information to obtain information such as the building conditions, construction conditions, and equipment operation conditions monitored by the safety monitoring sensors. For example, by long-term monitoring and analysis of the structural load, structural stress, etc. during the building construction process, it is judged whether the building structure is in a safe state.

[0060] Preferably, in one embodiment, the communication unit is specifically one of a 4G communication unit, a Bluetooth communication unit, a Lora communication unit, an RS485 communication unit, and an RS232 communication unit. Among them, the 4G communication unit, the Bluetooth communication unit, and the Lora communication unit use wireless methods for communication and transmit data through the mobile network or Bluetooth and WiFi wireless networks. The RS485 communication unit and the RS232 communication unit use wired methods for communication and directly connect to external devices through the serial port or interface for data transmission.

[0061] Furthermore, in one embodiment, the measurement module of the present application further includes a module wake-up unit, which is connected to the main control circuit and is used to wake up the main control circuit. Specifically, a low-power duty function can be set in the main control circuit, and it enters the sleep state when the module is not working to achieve low-power duty. When the sensor signal or data communication signal of an external event triggers the module wake-up unit, the model wake-up unit automatically wakes up the main control circuit to work.

[0062] It can be understood that the same or similar parts in the above embodiments can be referred to each other, and the content not detailed in some embodiments can be seen in the same or similar content in other embodiments.

[0063] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A measurement module for multi-type safety monitoring sensors, characterized in that, Including: A main control circuit, a storage unit, a power control unit, a channel switching unit, an analog quantity acquisition unit, a differential resistance measurement unit, a vibrating wire signal acquisition unit, a digital input acquisition unit, and a digital quantity signal acquisition unit; The output end of the channel switching unit is connected to the main control circuit, and the output end of the main control circuit is respectively connected to the storage unit and the power control unit; The input ends of the channel switching unit are respectively connected to the analog quantity acquisition unit, the differential resistance measurement unit, the vibrating wire signal acquisition unit, the digital input acquisition unit, and the digital quantity signal acquisition unit; The power control unit is respectively connected to the analog quantity acquisition unit, the differential resistance measurement unit, the vibrating wire signal acquisition unit, the digital input acquisition unit, and the digital quantity signal acquisition unit; The analog quantity acquisition unit, the differential resistance measurement unit, the vibrating wire signal acquisition unit, the digital input acquisition unit, and the digital quantity signal acquisition unit are all connected to the safety monitoring sensor through communication cables; The safety monitoring sensor includes an analog signal sensor, a differential resistance sensor, a digital sensor, a switch sensor, and a vibrating wire sensor.

2. The multi-type safety monitoring sensor measurement module according to claim 1, wherein It further includes a communication unit, which is connected to the main control circuit and is used for sending sensor information and receiving control instructions.

3. The multi-type safety monitoring sensor measurement module according to claim 1, characterized in that, It further includes a power module, which is connected to the main control circuit.

4. The multi-type safety monitoring sensor measurement module according to claim 2, characterized in that, It further includes a host computer, which is connected to the communication unit and is used for obtaining sensor information and sending control instructions.

5. The multi-type safety monitoring sensor measurement module according to claim 2, characterized in that, The communication unit is specifically one of a 4G communication unit, a Bluetooth communication unit, a Lora communication unit, an RS485 communication unit, and an RS232 communication unit.

6. The multi-type safety monitoring sensor measurement module according to claim 3, characterized in that, The power module is specifically one of a DC power supply, an AC power supply, or a solar power supply.

7. The multi-type safety monitoring sensor measurement module according to claim 1, characterized in that, It further includes a module wake-up unit, which is connected to the main control circuit.

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