CN211263596U

CN211263596U - Remote voltage monitoring device of nuclear magnetic resonance water detector

Info

Publication number: CN211263596U
Application number: CN201921914122.6U
Authority: CN
Inventors: 王子强
Original assignee: Jilin University
Current assignee: Jilin University
Priority date: 2019-11-06
Filing date: 2019-11-06
Publication date: 2020-08-14
Anticipated expiration: 2029-11-06

Abstract

The utility model belongs to geophysical exploration preparation field especially relates to a remote voltage monitoring devices of nuclear magnetic resonance water detector, and the device includes: the device comprises a voltage acquisition module, a true effective value measuring circuit, a control unit, a power supply module and an LED display module; the voltage acquisition module is connected with the true effective value measuring circuit, the true effective value measuring circuit is connected with the control unit, the voltage sampling module samples the power supply voltage of the nuclear magnetic resonance water detector, and analog signals obtained by acquiring small voltage signals and passing through the true effective value measuring circuit are sent to an AD sampling end of the control unit; the power supply module is connected with the control unit, is the working basis of the whole voltage monitoring system and provides a stable and pure working power supply for the normal operation of each unit module; and the LED display module is connected with the control unit and used for displaying. The problem of stability among the prior art is solved.

Description

Remote voltage monitoring device of nuclear magnetic resonance water detector

Technical Field

The utility model belongs to geophysical exploration preparation field especially relates to a remote voltage monitoring devices of nuclear magnetic resonance water finder.

Background

Water resources are one of the most important natural resources and irreplaceable strategic resources, the total amount of water resources in China is rich, but the per-person occupancy is 1/4 of the per-person occupancy in the world, and the water resources in China are extremely unevenly distributed. The nuclear magnetic resonance technology for detecting underground water is the only new method for directly detecting underground water at present, and the principle is to detect by using nuclear magnetic resonance signals generated by energy level transition of hydrogen protons in water. The method belongs to a weak signal detection means, the signal amplitude is in a nano-volt level, strong background noise is easy to collect due to the high sensitivity of the instrument, and a useful signal is often submerged in the noise to cause serious distortion and influence subsequent data processing and inversion interpretation, so the working stability of the nuclear magnetic resonance water finder is particularly important.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a remote voltage monitoring device of nuclear magnetic resonance water detector is provided, the problem of stability ground among the prior art is solved.

A remote voltage monitoring device of a nuclear magnetic resonance water detector, the device comprises: the device comprises a voltage acquisition module, a true effective value measuring circuit, a control unit, a power supply module and an LED display module; wherein the content of the first and second substances,

the voltage acquisition module is connected with the true effective value measuring circuit, the true effective value measuring circuit is connected with the control unit, the voltage sampling module samples the power supply voltage of the nuclear magnetic resonance water detector, and analog signals obtained by acquiring small voltage signals and passing through the true effective value measuring circuit are sent to an AD sampling end of the control unit;

the power supply module is connected with the control unit, is the working basis of the whole voltage monitoring system and provides a stable and pure working power supply for the normal operation of each unit module;

and the LED display module is connected with the control unit and used for displaying.

Furthermore, the control unit adopts a single chip microcomputer with the model of STC89C54RD +.

Furthermore, the power module supplies power to a 12V backup power battery, the backup power battery supplies working voltage to the monitor, the diode D1 prevents the battery from reversely supplying power to the rectifying filter circuit, the power module is also divided into two paths after being converted into stable +5V through the high-efficiency linear voltage-stabilizing integrated block ASM1117-5V, one path is sent into the low-power polarity-reversal power converter ICL7660 to convert and output-5V, and the other path is the ASM1117-3.3V voltage-stabilizing integrated block to output + 3.3V.

Further, the system also comprises a communication module connected with the control unit, the communication module comprises an Ethernet communication module and a GPRS communication module, an RS485 serial port is simultaneously equipped as a data maintenance channel to be respectively connected with the control unit, the Ethernet communication module is an ENC28J60 Ethernet communication interface chip, and the GPRS communication module adopts an SIM300 and is connected with the control unit through the serial port.

Further, the voltage acquisition module adopts an AD7888 chip.

Further, the true effective value measuring module adopts an AD736 chip.

Compared with the prior art, the utility model, beneficial effect lies in: collecting voltage data of each working endpoint in real time, and displaying the voltage data on a monitoring LED display screen; the data is transmitted to the monitoring host in real time through the wired Ethernet interface or the wireless GPRS module for remote monitoring host communication, and the transmission distance is not limited. This neotype circuit structure is stable, and the fault rate is low to can guarantee in fact that nuclear magnetic resonance water detection appearance detects effective signal, provide effective guarantee for post processing.

Drawings

Fig. 1 is a schematic structural diagram provided in an embodiment of the present invention;

fig. 2 is a circuit diagram of a voltage acquisition module according to an embodiment of the present invention;

fig. 3 is a circuit diagram of a true effective value measuring module according to an embodiment of the present invention;

fig. 4 is a circuit diagram of a core control unit according to an embodiment of the present invention;

fig. 5 is a circuit diagram of a power module according to an embodiment of the present invention;

fig. 6 is a block diagram of a communication module according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Fig. 1 is a block diagram of a remote voltage monitoring system of a nuclear magnetic resonance water detector, which includes: the device comprises a voltage acquisition module 2, a true effective value measuring circuit 3, a core control unit 4, a power module 4, an LED display module 5 and a communication module 6, wherein the voltage acquisition module 1 is connected with the true effective value measuring circuit 2, and the true effective value measuring circuit 3 is connected with the core control unit 4. The voltage sampling module 1 samples the power supply voltage of the nuclear magnetic resonance water detector, and analog signals obtained by collecting small voltage signals and passing through the true effective value measuring circuit 2 are sent to an AD sampling end of the single chip microcomputer.

Referring to fig. 5, the power module 4 is connected to the core control unit 4, and the power module is a working basis of the whole voltage monitoring system and provides a stable and pure working power supply for normal operation of each unit module. In the utility model discloses in, see that fig. 4 shows, the singlechip is chooseed for use to the core control unit, and the model is STC89C54RD + and adopts +5V, and other parts of this novel need + -5V power respectively, +4V, +3.3V mains operated, so power module need provide +3.3V, +4V, +5V and four supply voltage passageways of-5V. The circuit principle is as shown in fig. 5, the 12V back-up battery supplies power, the back-up battery supplies working voltage to the monitor, and the diode D1 prevents the battery from supplying power to the rectifier filter circuit in reverse. The backup battery is used, so that data transmission failure caused by power failure is effectively avoided. The other path is converted into stable +5V by a high-efficiency linear voltage-stabilizing integrated module ASM1117-5V and then is also divided into two paths, and one path is sent into a low-power polarity reversal power converter ICL7660 to convert and output-5V, so that +/-5V working voltage can be provided for the system; one path of the voltage is supplied to an ASM1117-3.3V voltage-stabilizing integrated block, +3.3V is output, and working voltage is supplied to an Ethernet port module.

Referring to fig. 6, the communication module is connected to the core control unit, and in terms of the design of the communication module, an ethernet communication module and a GPRS communication module are adopted, and an RS485 serial port is provided as a data maintenance channel. The Ethernet communication module adopts an NC28J60 Ethernet communication interface chip, is an Ethernet controller, and comprises three different types of registers, namely a control register, an Ethernet register and a physical register. The communication module releases the I/O port of the CPU. The GPRS module adopts the SIM300 and communicates with the controller through a serial port.

The LED display module is connected with the core controller, drives the bit field and the field to respectively lighten the designated field of each nixie tube.

Referring to fig. 2, the voltage acquisition module adopts an AD7888 chip. Referring to fig. 3, the true-significance measurement module uses an AD736 chip.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A remote voltage monitoring device of a nuclear magnetic resonance water detector is characterized by comprising: the device comprises a voltage acquisition module, a true effective value measuring circuit, a control unit, a power supply module and an LED display module; wherein the content of the first and second substances,

2. The apparatus of claim 1 wherein said control unit is a single chip microcomputer model STC89C54RD +.

3. The apparatus of claim 1, wherein the power module supplies power to a 12V backup power battery, the backup power battery supplies operating voltage to the monitor, the diode D1 prevents the battery from supplying power to the rectifying filter circuit in reverse, the power module is also divided into two paths after being converted into stable +5V by the high-efficiency linear voltage-stabilizing integrated module ASM1117-5V, one path is sent into the low-power polarity-reversal power converter ICL7660, and the output is converted into-5V, and the other path is sent into the ASM1117-3.3V voltage-stabilizing integrated module and outputs + 3.3V.

4. The device of claim 1, further comprising a communication module connected to the control unit, wherein the communication module comprises an ethernet communication module and a GPRS communication module, and an RS485 serial port is provided as a data maintenance channel and is connected to the control unit, the ethernet communication module is an ENC28J60 ethernet communication interface chip, and the GPRS communication module is connected to the control unit through a serial port by using the SIM 300.

5. The device of claim 1, wherein the voltage acquisition module is an AD7888 chip.

6. The apparatus of claim 1, wherein the true validity measurement module employs an AD736 chip.