CN201532447U - An automatic monitoring system for the electrical performance of a solar power supply - Google Patents

Abstract

The utility model provides an automatic monitoring system for the electrical performance of a solar power supply, comprising a battery tester, a light source and a display and recording device; the battery tester has at least one pair of voltage measuring probes and a pair of current measuring probes, and the voltage measuring probes are connected to At both ends of the output voltage of the solar power supply to be measured, the current measuring probe is connected in series to the circuit in which the solar power supply charges the storage battery, and the measurement result is output to the display and recording device. The beneficial effect of the utility model is that since the current measurement probe and the voltage measurement probe of the battery tester are kept in contact with the solar power source, the test accuracy is high, and at the same time, the measurement data is transmitted to the central processor by using the data output port of the battery tester , in the central processor for storage processing, and realizes the automatic monitoring of the electrical performance of the solar power supply.

Description

An automatic monitoring system for the electrical performance of a solar power supply

technical field

The utility model relates to the field of automatic control, in particular to an automatic monitoring system for the electrical performance of a solar power supply.

Background technique

In solar products, a very important technical feature of solar power is the current and voltage when charging the battery during work. Therefore, when testing solar power products, it is necessary to charge the battery current when the solar power products are working. and voltage are tested. The general practice now is: install the solar power supply outdoors, connect the electrical interface of the solar power supply to the charging input end of the storage battery, and use a very primitive method to measure the number with an ammeter and a voltmeter by manpower. When measuring the current, it is necessary to connect the ammeter in series between the output terminal of the photovoltaic system and the storage battery. In this way, it is necessary to stop and connect the ammeter before continuing. This is inaccurate and inefficient, and the control of some solar power sources is integrated. The working mode of the circuit cannot be stopped when it is working. For example, the working mode of some circuits is controlled by IC, but if you need to test the current when it is working, you must disconnect the product line, so that the IC will start working again. . For example, the working mode of the IC of a product sets the working current of the LED to 80ma for the first 4 hours, and 40ma for the next 4 hours. If the lamp stops working, the IC will start working from the beginning, and the actual effect cannot be detected; so it will be wasteful to use manual inspection. A lot of time, secondly, the current and voltage parameter testing tool is a multimeter, which has internal resistance value, uses a battery, and the resistance value will increase as the voltage drops, resulting in inaccurate test results. In conclusion, monitoring the electrical performance of solar power sources in the prior art has the following disadvantages:

1. The detection efficiency is low and the error is large.

2. It cannot be detected in real time.

Contents of the invention

In order to solve the inaccurate and inefficient detection of the working current and voltage of the solar power supply in the prior art, the utility model provides an automatic monitoring system for the electrical performance of the solar power supply, including a battery tester, a light source and display and recording equipment;

The battery tester has at least one pair of voltage measurement probes connected in parallel to the two ends of the output voltage of the solar power supply to be tested, a pair of current measurement probes connected in series to the solar power supply to charge the battery, and a data output port. Described data output port is connected with display recording equipment by wire; Communication protocol is EIA RS-232 agreement;

The input end of the display and recording device is connected with the measurement result output end of the battery tester, including a display, a memory, a processor and corresponding software.

The beneficial effect of the utility model is that since the current measuring probe and the voltage measuring probe of the battery tester can be kept in contact with the solar cells to be tested for charging the storage battery, the measurement accuracy is high, and at the same time, the data output port of the battery tester is used to The measurement data is transmitted to the central processor, and stored in the central processor for storage, realizing automatic real-time monitoring of the electrical performance of the solar power supply.

The utility model is described in more detail below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Accompanying drawing 1 is a block diagram of the utility model embodiment.

In the figure: 1. Battery tester, 11. Current measuring probe, 12. Voltage measuring probe, 13. Digital output port, 2. Solar power supply, 3. Battery, 4. Solar power supply and battery charging interface, 5. Display and recording equipment , 6, optical isolator, 7, wire.

Detailed ways

Embodiment 1, with reference to accompanying drawing 1, solar power source electric performance automatic monitoring system, comprises battery tester 1, light source and display recording equipment 5; Described battery tester 1 has at least one pair of voltage measurement probes 12 and a pair of current measurement Probes 11 , in this embodiment, the battery tester 1 has a pair of current measurement probes 11 and a pair of voltage measurement probes 12 . All probes are connected to the solar power supply and battery charging interface 4, the voltage measurement probe 12 is connected to both ends of the solar power supply 2 and the solar battery 3, and the current measurement probe 11 is connected in series to the solar power supply and battery charging In the circuit in which the solar power source 2 described in the interface 4 charges the accumulator 3 .

In this embodiment, the light source generally utilizes sunlight, which is the most environmentally friendly and energy-saving light source, and also the light source that can most flatly reflect the performance of solar power. As long as the solar power supply under test is placed on a sunny roof or an open area, let the sunlight directly shine on the solar power supply under test. It is very practical to use sunlight as the light source of the automatic monitoring system in sunny deserts or seashores. An artificial light source can also be used as the light source in this embodiment. The artificial light source is controllable and can be used regardless of day or night, and it can be used regardless of the sky and cloudy sky, so the test progress can be well arranged.

In this embodiment, the display recording device 5 uses a personal computer. The battery tester 1 has a digital output port 13 for test results, and the digital output port 13 is connected to the data input port of the computer through a wire 7 . When in use, because the environment of the test site is relatively poor and does not meet the working conditions of computers and other equipment, the general use of this embodiment is arranged in this way: the battery tester and the solar power supply to be tested are placed in the sun, and the computer is installed. In places with good indoor conditions, use the RS-232 port on the battery tester to transmit the test data to the computer. Now the transmission distance of the RS-232 interface is 15 meters. It is safely transmitted to the computer, and an optical isolator 6 is set on the wire 7. The display interface can be set on the computer, and the test data records can be saved as required.

Embodiment 2, the main difference between this embodiment and Embodiment 1 is that the battery measuring instrument 1 in this embodiment has 8 pairs of current measuring probes 11 and 8 pairs of voltage measuring probes 12, and can monitor the charging of 8 groups of solar power sources at the same time. The measured data is transmitted to a personal computer by using the digital output port 13 of the battery tester 1, and stored and analyzed in the personal computer, so as to realize automatic monitoring of four groups of solar power sources at the same time.

In addition, more solar power sources can be automatically monitored in real time through multiple battery testers, and the measured data can be input into a personal computer through a digital output port.

Comprehensive embodiment 1 and the test device technical description of embodiment 2 embodiment of the utility model:

(1) High comprehensive utilization rate: You only need to extend the data line of the instrument to extend the related solar products to the outside (for example, some solar products need to be charged and discharged outdoors, and the data can be transferred to the outdoor charging and discharging data). The line extends about 15 meters, the port line extends 3 meters, and the monitoring computer can be placed inside the laboratory for observation at any time).

(2) Wide range of functions and applications: each test device has 8 ports (one computer can be connected to more than one), which can monitor the working current and working voltage during charging and discharging at the same time. This system can be used for all automatic monitoring of electrical properties. In terms of products and research and development, (charging and discharging current and voltage).

(3) Parameter setting and data storage: the current setting of the monitoring instrument circuit needs to be greater than the current of the monitored circuit; then the monitored data is automatically saved through software settings for subsequent reference;

(4) High data accuracy: the minimum testable voltage of this system is 0.0001V.

The result of the system test of the embodiment of the utility model is simple and widely used, and at the same time, the labor cost is reduced (manual manual testing is not required, usually a charge-discharge cycle is tested in 48 hours), and now only the instrument parameters After the setting is OK, there is no need for human supervision at all, and the computer will automatically save the test data; secondly, very accurate data can be obtained on the measurement data, so that the data of scientific research or inspection units can fully reflect the most actual performance of the product.

Claims (3)

1. An automatic monitoring system for the electrical performance of a solar power supply, characterized in that: automatic monitoring system: comprising a battery tester (1), a light source and a display recording device (5); The battery tester (1) has at least one pair of voltage measurement probes (12) connected in parallel to the two ends of the output voltage of the solar power supply to be tested, and a pair of current measurement probes connected in series to the solar power supply to charge the storage battery. Probe (11) and a data output port (13), described data output port (13) is connected with display recording device (5) by wire (7), and communication communication protocol is EIARS-232 agreement; The input end of the display recording device (5) is connected with the measurement result output end of the battery tester, and includes a display, a memory, a processor and corresponding software. 2. The automatic monitoring system for solar power electrical performance according to claim 1, characterized in that: an optical isolator is arranged on the electrical wire (7). 3. The automatic monitoring system for the electrical performance of a solar power supply according to claim 1 or 2, wherein the display and recording device is a personal computer.

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