CN201653448U - A sensor automatic acquisition device with manual comparison function - Google Patents

Abstract

The utility model discloses an automatic sensor acquisition device with manual comparison and measurement function, which comprises a data acquisition module, a channel selector and a power supply module, and is characterized in that: the data acquisition module is connected with the channel selector, and the data acquisition module is provided with a manual The comparison interface, the communication interface, the power supply interface and a plurality of vibrating wire sensor interfaces, and the power supply module are respectively connected with the power supply interface and the channel selector of the data acquisition module. The sensor automatic acquisition device with manual comparison and measurement function of the utility model can complete automatic measurement and manual comparison of multiple vibrating wire sensors, effectively reducing production costs and improving measurement reliability.

Description

A sensor automatic acquisition device with manual comparison function

technical field

The utility model relates to a sensor automatic acquisition device, which belongs to the technical field of automatic detection devices.

Background technique

With the vigorous development of water conservancy projects, roads, and bridges, the importance of engineering safety monitoring has been paid more and more attention. The vibrating wire sensor is a sensor widely used in engineering safety monitoring. At present, the manual comparison interface of the vibrating wire sensor automatic data acquisition device used in the engineering safety monitoring system adopts the mechanical manual comparison interface.

The mechanical and manual comparison interface is composed of an interface terminal and a multi-knife multi-position knob mechanical switch, which is connected between the vibrating wire sensor and the data acquisition module. test interface.

One or more knob switches will be added to the device for mechanical and manual comparison measurement interface. When multiple devices are used in the engineering safety monitoring system, the cost will increase. The electronic manual comparison interface only adds a channel selector, and is not fixed in the device. One or more engineering safety monitoring systems can share a channel selector, which will effectively reduce costs.

The mechanical manual comparison test interface adopts the rotary switch as a mechanical contact type, which has a short life and low reliability. The electronic manual comparison interface adopts high-performance electronic switch circuit, which has long life and high reliability.

Utility model content

The technical problem to be solved by the utility model is to provide a sensor data acquisition device, which can complete automatic measurement and manual comparison of multiple vibrating wire sensors, reduce production costs, and improve measurement reliability.

In order to solve the above-mentioned technical problems, the utility model provides a sensor automatic acquisition device with a manual comparison function, including a data acquisition module, a channel selector and a power supply module, characterized in that: the data acquisition module is connected to the channel selector, and the The data acquisition module is provided with a manual comparison interface, a communication interface, a power supply interface and a plurality of vibrating wire sensor interfaces. The power supply module is connected to the power supply interface and the channel selector of the data acquisition module respectively. Sensor manual reading gauge.

The aforementioned sensor automatic acquisition device with manual comparison and measurement function is characterized in that: the communication interface of the data acquisition module, when performing manual comparison and measurement, the data acquisition module is connected with the channel selector through the communication interface, and through the communication interface during automatic measurement. Connected to the monitoring computer.

The aforementioned sensor automatic acquisition device with manual comparison and measurement function is characterized in that: the channel selector includes a second microprocessor, and the second microprocessor communicates with the second power supply circuit, the second communication circuit, and the number setting circuit respectively. The key and the display circuit are connected, and the channel selector is connected with the first power supply circuit of the data acquisition module, the communication interface of the data acquisition module, and the output interface of the power supply module through the interface terminal.

The aforementioned sensor automatic acquisition device with manual comparison function is characterized in that: the number key and display circuit of the channel selector for selecting the number of the vibrating wire sensor are connected to the second microprocessor, and the second The microprocessor is connected to the second communication circuit, and the second communication circuit is connected to the data acquisition module, and the corresponding vibrating wire sensor is switched to the manual comparison measurement interface through the switch circuit of the data acquisition module.

The channel selector is a removable and portable channel selector. The channel selector can be connected with the power supply of the data acquisition module, the communication interface and the output interface of the power supply module through the interface terminal, use the number setting key and the digital display circuit to perform manual operation to select the number of the vibrating wire sensor, and pass the number through the second The communication circuit transmits to the data acquisition module, and the data acquisition module switches the corresponding vibrating wire sensor to the manual comparison interface through the switch circuit, so as to provide manual reading for the vibrating wire sensor reading instrument.

The data acquisition module includes a first microprocessor, a first power supply circuit, a first communication circuit, a clock circuit, a switch circuit, a measurement circuit, a sensor interface terminal, a manual comparison measurement interface terminal, the manual comparison measurement interface terminal, a sensor The interface terminal is connected with the switch circuit, the switch circuit is connected with the measurement circuit, the measurement circuit is connected with the first microprocessor, the first microprocessor is connected with the first power circuit, the clock circuit, the first communication circuit and the switch circuit at the same time, the power circuit At the same time, it is connected to the measuring circuit. The data acquisition module can be connected to multiple vibrating wire sensors at the same time, and can be automatically started at any set time for single inspection, patrol inspection, selective inspection and temporary storage of data, and has a power-off protection function. It can receive commands from the monitoring computer to set and modify the clock and measurement and control parameters. Temporary measurement data can be transmitted to the monitoring computer for storage, processing and chart output.

The power module includes a voltage stabilizing circuit, a transformer, a battery, and an input and output interface terminal, and the input interface terminal is connected to an external AC or DC power supply or a battery. The power supply module can be powered by external AC or DC at the input interface or directly by the internal battery, and output a fixed DC voltage to ensure the power supply of the data acquisition module and channel selector.

The beneficial effects achieved by the utility model:

The sensor automatic acquisition device with manual comparison and measurement function of the utility model can complete automatic measurement and manual comparison of multiple vibrating wire sensors, effectively reducing production costs and improving measurement reliability.

Description of drawings

Fig. 1 is a block diagram of the device system;

Fig. 2 is a block diagram of the data acquisition module of Fig. 1;

Fig. 3 is a composition block diagram of the channel selector of Fig. 1;

FIG. 4 is a block diagram of the power module in FIG. 1 .

Detailed ways

Figure 1 shows a block diagram of the system composition of the vibrating wire sensor automatic data acquisition device with an electronic manual comparison interface. The device is composed of a data acquisition module 1, a channel selector 2 and a power module 3. The data acquisition module 1 can simultaneously access multiple vibrating wire sensors. When measuring automatically, the channel selector 2 is not connected to the device. The power supply module 3 directly supplies power to the data acquisition module 1, and the data acquisition module 1 measures the connected sensors according to the set time and cycle, and the measurement data is stored in the data acquisition module 1. The communication interface of the data acquisition module 1 is directly connected with the monitoring computer, and the stored data can be obtained by the application software of the monitoring computer for storage, processing and chart output. When performing manual comparison, the channel selector 2 is connected to the device, and the power supply module 3 supplies power to the channel selector 2. The communication interface of the data acquisition module 1 is connected to the communication interface of the channel selector 2, and the channel selector 2 is used to select the required The number of the vibrating wire sensor for manual comparison, and the number is transmitted to the data acquisition module 1 through its communication interface, and the data acquisition module 1 switches the selected vibrating wire sensor to its electronic manual comparison measurement interface for manual reading instrument reading.

Fig. 2 shows the composition block diagram of data acquisition module 1 among Fig. 1, and data acquisition module 1 is made up of first microprocessor 11, first power supply circuit 12, first communication circuit 14, clock circuit 13, switch circuit 15, measuring circuit 16. It consists of sensor interface terminal 17 and manual comparison measurement interface terminal 18. The first microprocessor 11 adopts a STC89C58RD+ single-chip microcomputer, which contains a 16K byte EEPROM storage chip (for temporarily storing measurement data and realizing power-down protection). The first power supply circuit 12 uses a low-dropout linear voltage regulator to perform secondary voltage stabilization on the input voltage, and uses DC-DC power conversion technology to supply power to the measurement circuit 16 . During the automatic measurement of the sub-player, the first microprocessor 11 communicates with the monitoring computer through the first communication circuit 14, accepts its instructions, or accepts the control signal sent by the clock circuit 13 according to the set time and cycle, and controls the switch circuit 15 to connect the sensor interface. The vibrating wire sensor connected to the terminal 17 is switched to the measurement circuit 16 for measurement, the measurement data is stored in the first microprocessor 11, and the measurement data can be transmitted to the monitoring computer through the first communication circuit 14 according to the instructions of the monitoring computer. During manual comparison, the first microprocessor 11 communicates with the channel selector 2 through the first communication circuit 14, receives the number of the manual comparison sensor, and controls the switch circuit 15 to switch the vibrating wire sensor connected to the sensor interface terminal 17 to manual. The comparison test interface terminal 18 is used for reading by manual reading instruments.

FIG. 3 shows a block diagram of the channel selector 2 in FIG. 1 . The channel selector is composed of a second microprocessor 21 , a second power supply circuit 22 , a second communication circuit 23 , a number setting key 24 and a display circuit 25 . The second microprocessor 21 adopts STC125412AD single-chip microcomputer, and the second power supply circuit 22 adopts a low-dropout linear voltage regulator device, and the input voltage is carried out to secondary voltage stabilization for the second microprocessor 21, the second communication circuit 23, the number key 24, The display circuit uses 25 circuits. The second communication circuit 23 adopts a 65LBC184 chip, and the number setting key 24 adopts two long-handle light-touch key switches, one as a number increase key and one as a number decrease key. , displaying the serial number of the vibrating wire sensor for manual comparison. The second microprocessor 21 monitors the state of the number setting key 24, increases or decreases the numbering of the vibrating wire sensor of manual comparison according to the state of the key, and displays it through the display circuit 25, and simultaneously passes the numbering through the second communication circuit 23 is sent to the data acquisition module 1 to realize the function of controlling the data acquisition module to switch the vibrating wire sensor with the corresponding number to the electronic manual comparison interface

FIG. 4 is a block diagram of the power module 3 in FIG. 1 , which is composed of a voltage stabilizing circuit 31 , a transformer 32 and a battery 33 . When the AC 220V power supply is adopted, the AC 220V power is connected to the transformer 32, and the transformer 32 outputs low-voltage AC power to the voltage stabilizing circuit 31, and then outputs a fixed voltage DC power after passing through the voltage stabilizing circuit 31, and simultaneously charges the battery in the power supply module 3. When DC power is used (such as a solar cell), the DC power is connected to the voltage stabilizing circuit 31, and the constant voltage DC power is output after passing through the voltage stabilizing circuit 31, and at the same time, the battery in the power supply module 3 is charged. When there is no external power supply, the battery 33 directly supplies power to the data acquisition module and the channel selector, thereby ensuring the reliable operation of the device when there is no reliable power supply in the complex environment in the field.

1. The device consists of a data acquisition module, a channel selector and a power supply module. The data acquisition module provides a manual comparison interface to connect to a manual reading instrument, and uses an electronic switch to switch the sensor to the manual comparison interface.

2. The device uses a detachable portable channel selector to select the manual comparison sensor. During automatic measurement, the channel selector is not connected to the device.

3. When the device is compared manually, the channel selector uses the communication interface of the data acquisition module to communicate with the monitoring computer during automatic measurement, and no additional communication interface is required.

4. When the device is manually compared, the channel selector uses the original power module of the device to supply power, and does not need to bring its own power supply.

5. The channel selector of the device is equipped with touch buttons and digital display.

1. The device switches the sensor from the data acquisition module to the manual comparison interface through an electronic switch, which improves the reliability of the manual comparison interface, saves production costs, and reduces the size of the device.

2. The device uses a detachable and portable channel selector to select the manual comparison sensor, so that only one channel selector can be used in one or more projects to complete the manual comparison of all connected sensors, which improves the manual comparison. The reliability of the interface is convenient, the maintenance and replacement of the device is convenient, the production cost is saved, and the volume of the device is reduced at the same time.

The data acquisition module installed in the device is not limited to the vibrating wire sensor data acquisition module, the differential resistance sensor data acquisition module, the standard output sensor data acquisition module, etc. can also apply the above scheme, provide electronic manual comparison interface, and can Mixed and assembled in the device.

The utility model has been disclosed above with preferred embodiments, but it is not intended to limit the utility model, and all technical solutions obtained by adopting equivalent replacement or equivalent transformation methods fall within the protection scope of the utility model.

Claims (3)

1. automatic acquisition device of sensor with artificial comparing and testing function, comprise data acquisition module, channel to channel adapter and power module, it is characterized in that: data acquisition module links to each other with channel to channel adapter, described data acquisition module is provided with artificial than surveying interface, communication interface, power interface and a plurality of vibrating string type sensor interface, power module links to each other with data acquisition module and channel to channel adapter respectively, and is described artificial than surveying the artificial readout instrument of interface access vibrating string type sensor.

2. the automatic acquisition device of sensor with artificial comparing and testing function according to claim 1, it is characterized in that: the communication interface of described data acquisition module, when carrying out manually than survey, data acquisition module is connected with channel to channel adapter by communication interface, links to each other with monitoring computer by communication interface during automatic measurement.

3. the automatic acquisition device of sensor with artificial comparing and testing function according to claim 1, it is characterized in that: described channel to channel adapter comprises second microprocessor, described second microprocessor respectively with second source circuit, second communication circuit, put several keys, display circuit links to each other, channel to channel adapter is connected with first power circuit of data acquisition module, the communication interface of data acquisition module, the output interface of power module by Interface Terminal.

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