CN205787054U - Nuclear magnetic resonance, NMR water detector discharge and recharge power supply testing device - Google Patents

Abstract

The utility model provides a charging and discharging power supply testing device for a nuclear magnetic resonance water finding instrument. The device includes a power supply to be tested, a host computer, a router, a single-chip microcomputer module, an input voltage sensor, an output voltage sensor, an input current sensor, an output current sensor, a 24V AC‑DC power supply module, temperature acquisition module and load. The test device of the utility model can complete a series of test steps according to the preset test steps, or manually control the test, monitor the input/output voltage, current signal and temperature signal in real time, calculate the power and efficiency values, generate graphs and display them. Record, when the monitored data is abnormal, the test will be automatically stopped and the error message will be reported.

Description

NMR water finder charge and discharge power supply test device

technical field

The utility model relates to a charging and discharging power supply testing device for a nuclear magnetic resonance water finding instrument, which belongs to the field of geophysical detection instruments.

Background technique

The nuclear magnetic resonance method is a geophysical detection method that directly detects groundwater. This method has the advantages of unique interpretation, quantitative results, high detection efficiency, low cost, and comprehensive hydrogeological information. The nuclear magnetic resonance water finding instrument developed by using this method has been applied to many groundwater detection projects, and has achieved good application results.

The charge and discharge power supply is an important component of the NMR water detector. During the operation of the instrument, the charging and discharging power supply plays the role of constant current charging and constant current discharging for the emission system. Therefore, before installation, it is of great significance to ensure the product quality of the charging and discharging power supply.

At present, there is no set of detection device and detection method specially used for the charging and discharging power supply. The existing test methods are mainly to manually connect the charging and discharging power supply and load (energy storage capacitor or high-power sliding rheostat), provide charging and discharging control signals through simple batteries and switches, use the meter or multimeter to measure voltage and current signals, and infrared temperature measurement The meter monitors the temperature.

The current testing method has the following disadvantages:

1. The test lines for temporary connection are messy, the connection is cumbersome, prone to wiring errors, and the reliability is poor.

2. In the process of measuring voltage and current signals with a meter or a multimeter, it is impossible to record the data in real time, accurately and comprehensively by relying on manual recording of the values. At the same time, it requires more manpower and time in the process of sorting out the data.

3. The infrared thermometer can only monitor the temperature of a certain point at the same time.

Therefore, there is an urgent need for a test device that is easy to use, has detailed data records, and has reliable test results.

Utility model content

The purpose of the utility model is to provide a charging and discharging power supply testing device for a nuclear magnetic resonance water finding instrument in view of the above problems.

The utility model is realized through the following technical solutions:

NMR water detector charge and discharge power supply test device, the device includes the power supply under test, host computer, router, single-chip microcomputer module, input voltage sensor, output voltage sensor, input current sensor, output current sensor, 24VAC-DC power supply module, temperature Acquisition module and load;

The power supply under test is placed in the test chamber of the test box, and the host computer is connected to the router through an Ethernet cable or wireless Ethernet; the input voltage sensor and the input current sensor are connected to the input end of the power supply under test, and the output voltage sensor, output The current sensor is connected to the output terminal of the power supply under test, and at the same time, the input voltage sensor, input current sensor, output voltage sensor, and output current sensor are respectively connected to the single-chip microcomputer module; the multi-channel probe of the temperature acquisition module is fixed in the test box of the power supply under test At the same time, the temperature acquisition module is connected to the router through the Ethernet cable; the single-chip microcomputer module is connected to the router through the Ethernet cable; the load is connected to the output terminal of the power supply under test through the output current sensor. At the same time, the load The output voltage sensor is connected to the single-chip microcomputer module; the input terminal of the 24VAC-DC power supply module is connected to the mains, and the output terminal is connected to the input terminal of the measured power supply through the input current sensor.

Further, the load includes an energy storage capacitor and a high-power sliding rheostat load.

Further, the temperature acquisition module is an 8-way temperature acquisition module.

Beneficial effects of the utility model: the test device is easy to operate, has a friendly man-machine interface, and can realize real-time, comprehensive and accurate monitoring, calculation, display and recording of the signal to be tested, and the test device itself has good reliability.

Description of drawings

Fig. 1 is a structural block diagram of the charging and discharging power supply testing device of the nuclear magnetic resonance water finding instrument of the present invention.

detailed description

The utility model will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

Referring to Figure 1, the charging and discharging power supply test device for the magnetic resonance water finder, the device includes a power supply under test, a host computer, a router, a single-chip microcomputer module, an input voltage sensor, an output voltage sensor, an input current sensor, an output current sensor, 24V AC- DC power supply module, temperature acquisition module and load.

The power supply under test is fixed in the test chamber of the test box. The test chamber and the interface in the chamber are the same as the installation chamber of the power supply under test in the NMR water detector. The chamber can provide fixation and heat dissipation. The host computer is connected to the router through an Ethernet cable or wireless Ethernet; the input voltage sensor and the input current sensor are connected to the input terminal of the power supply under test, the output voltage sensor and the output current sensor are connected to the output terminal of the power supply under test, and are respectively connected to the single-chip microcomputer module , and transmit the collected analog signal to the single-chip microcomputer module; the 8-way probe of the 8-way temperature acquisition module is fixed on the test chamber where the temperature needs to be concerned (mainly the MOS tube of the inverter circuit of the tested power supply, the MOS tube of the discharge circuit, the rectifier And the heat dissipation area of the anti-reverse circuit diode), at the same time, the temperature acquisition module is connected to the router through the Ethernet line, and the collected temperature data is transmitted to the host computer through the router; the single-chip module is connected to the router through the Ethernet line, and the single-chip module will be from The analog signals of each input voltage sensor, input current sensor, output voltage sensor, and output current sensor are converted into digital signals, uploaded to the host computer, and receive instructions from the host computer to control the charging and discharging of the power supply under test and load switching. The load includes two types: energy storage capacitor and high-power sliding rheostat. At the same time, the load is also connected to the single-chip microcomputer module, which is controlled by the single-chip microcomputer module to switch between the two loads. The load is connected to the output terminal of the power supply under test through the output current sensor. At the same time, the load is connected to the single-chip microcomputer module through the output voltage sensor; among them, the load of the energy storage capacitor is exactly the same as the load of the power supply under test when it is actually working, and it can completely dynamically simulate the load status of the actual work, which is used for the pre-set test plan Medium; the high-power sliding rheostat can manually adjust the resistance value, statically observe the working condition of the power supply under test at a certain output voltage, and use it in the manual control test program; the input terminal of the 24V AC-DC power supply module is connected to 220V mains, The output terminal is connected with the input terminal of the power supply under test to provide input electric energy to the power supply under test.

The host computer monitors the input/output voltage, current signal and temperature signal in real time according to the data received from the temperature acquisition module and the single-chip microcomputer module, calculates the power and efficiency values, generates curves, and displays and records them. In addition, the host computer Send charge and discharge commands to the single-chip microcomputer module according to the test scheme (the test scheme can be a preset test scheme or manual control). All modules (except the host computer) are integrated in a test box.

Claims (3)

1. nuclear magnetic resonance, NMR water detector discharge and recharge power supply testing device, it is characterised in that this device includes tested power supply, upper electromechanics Brain, router, one-chip computer module, input voltage sensor, output voltage sensor, input current sensor, output electric current pass Sensor, 24V AC-DC power module, temperature collect module and load；

Described tested power supply is placed in the test storehouse of test casing, and host computer computer passes through ethernet line or wireless ethernet It is connected with router；Input voltage sensor, input current sensor are connected with tested power input, and output voltage senses Device, output current sensor be connected with tested power output end, meanwhile, described input voltage sensor, input current sensor, Output voltage sensor, output current sensor are connected with one-chip computer module respectively；The multichannel probe of temperature collect module is fixing Needing to pay close attention to the region of temperature on the test storehouse of the test casing of tested power supply, meanwhile, temperature collect module is through ethernet line It is connected with router；Described one-chip computer module is connected with router through ethernet line；Load and tested power output end are through output Current sensor is connected, and meanwhile, load is connected with one-chip computer module by output voltage sensor；24VAC-DC power module is defeated Entering and terminate civil power, outfan is connected with tested power input by input current sensor.

2. nuclear magnetic resonance, NMR water detector discharge and recharge power supply testing device as claimed in claim 1, it is characterised in that described load bag Include storage capacitor and the load of high-power slide rheostat.

3. nuclear magnetic resonance, NMR water detector discharge and recharge power supply testing device as claimed in claim 1, it is characterised in that described temperature is adopted Collection module is 8 road temperature collect modules.