CN207408511U - A kind of device parameters measuring device - Google Patents

Abstract

The utility model devises a kind of device parameters measuring device, including operation interface, inside device, algorithmic system, told operation interface inside device with being electrically connected, it is electrically connected inside told device with operation interface, tells and be electrically connected inside device with algorithmic system, told and be electrically connected inside device with detected element.The device parameters measuring device, has drawn the thought of state estimation, by injecting different voltage to measured device, obtains volume of data, is analyzed by algorithmic system, draw the exact value of parameter, substantially reduce the interference of the error in actual measurement process.

Description

A device parameter measuring device

technical field

The utility model relates to the field of electrical device measurement, in particular to a device parameter measurement device.

Background technique

All kinds of electrical equipment are inseparable from various internal electrical devices. Accurately knowing the parameter values of various devices plays an important role in the design, debugging and operation of electrical equipment. Precision equipment requires the accuracy of the measured parameters to be high. General measuring devices inevitably have error interference due to various reasons, and the measured device parameters are not accurate.

Utility model content

Aiming at the deficiencies of the existing measuring devices, the utility model provides a device parameter measuring device, which greatly reduces the interference of errors in the actual measuring process and improves the measuring accuracy.

In order to improve the accuracy of parameter measurement, the utility model provides the following technical solutions: a device parameter measurement device, including an operation interface, the inside of the device, and an algorithm system, characterized in that: the inside of the device includes a voltage reducer, a single-chip microcomputer, a storage module, Communication module, main circuit, A/D converter, the input end of the said step-down device is electrically connected with the output end of the external power supply, the output end of the said step-down device is electrically connected with the input end of the single-chip microcomputer, and the said operation interface The output end of the single-chip microcomputer is electrically connected to the input end of the single-chip microcomputer, the input end of the operation interface is electrically connected to the output end of the single-chip microcomputer, the input end of the operation interface is electrically connected to the output end of the single-chip microcomputer, and the output end of the single-chip microcomputer is connected to the output end of the single-chip microcomputer. The input end of the storage module is electrically connected, the output end of the storage module is electrically connected to the input end of the algorithm system, the output end of the single-chip microcomputer is electrically connected to the input end of the communication module, and the output end of the communication module is electrically connected to the input end of the algorithm system. The input end is connected to the wireless channel, the output end of the single-chip microcomputer is electrically connected to the input end of the main circuit, the output end of the main circuit is electrically connected to the input end of the A/D converter, and the output end of the A/D converter is electrically connected. It is electrically connected with the input end of the single-chip microcomputer, the input end of the main circuit is electrically connected with the output end of the external power supply, and the output end of the main circuit is electrically connected with the input end of the unit under test.

Preferably, the said single-chip microcomputer, storage module, communication module, main circuit, A/D converter constitute the internal structure of the device; preferably, the interior of the said device and the algorithm system constitute the entire design of the whole device; preferably, the single-chip microcomputer is MCS-51 single-chip microcomputer; preferably, said main circuit is a single-phase bridge PWM rectifier circuit.

Compared with the prior art, the utility model provides a device parameter measuring device, which absorbs the idea of state estimation, detects the corresponding current through multiple measurements at different voltage values, and thus obtains Multiple sets of data, through the analysis and calculation of the data, the parameters of the tested components are obtained, and the purpose of improving the measurement accuracy is achieved.

Description of drawings

Fig. 1 is a schematic diagram of the system of the utility model, and Fig. 2 is a structural diagram of the main circuit.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Please refer to Fig. 1, a kind of device parameter measurement device, comprises operation interface, device inside, algorithm system, it is characterized in that: described device inside comprises step-down device, single-chip microcomputer, storage module, communication module, main circuit, A/D conversion The input end of the said step-down device is electrically connected with the output end of the external power supply, the output end of the said operation interface is electrically connected with the input end of the single-chip microcomputer, and the input end of the said operation interface is electrically connected with the output end of the single-chip microcomputer , the output end of the said step-down device is electrically connected with the input end of the single-chip microcomputer, the output end of the said single-chip microcomputer is electrically connected with the input end of the storage module, the output end of the said storage module is electrically connected with the input end of the algorithm system, and the said The output end of the single-chip microcomputer is electrically connected with the input end of the communication module, the output end of the communication module is connected with the wireless channel of the input end of the algorithm system, the output end of the single-chip microcomputer is electrically connected with the input end of the main circuit, and the main circuit of the complaint The output end is electrically connected to the input end of the A/D converter, the output end of the A/D converter is electrically connected to the input end of the single-chip microcomputer, the input end of the main circuit is electrically connected to the output end of the external power supply, the appeal The output end of the main circuit is electrically connected with the input end of the unit under test.

The interior of the device and the algorithm system constitute the entire design of the device. The single-chip microcomputer, storage module, communication module, main circuit, and A/D converter constitute the internal structure of the device. The single-chip microcomputer is MCS-51 single-chip microcomputer, and the main circuit is a single-phase bridge PWM rectifier circuit. .

When in use, the output end of the device is electrically connected to the input end of the unit under test, and the input end of the device is electrically connected to an external power supply. The external power supply voltage is reduced to the power supply voltage required by the single-chip microcomputer through the voltage reducer. The operator sets a series of measurement voltages for the output of the device through the operation interface. The operation interface transmits the operation signal to the single-chip microcomputer, and the single-chip microcomputer determines the appropriate control strategy. Referring to Figure 2, the control method is to send a series of set pulse signals from the single-chip microcomputer and input them into the gates of each full-control device through the pulse amplifier circuit to control the opening and closing of the power MOSFET, so as to control the width of the output voltage pulse. modulation. A diode is connected in parallel to each power MOSFET to play the role of freewheeling. Four power MOSFETs and four diodes form a single-phase bridge PWM rectifier circuit, which is connected in parallel with capacitor C1 and then electrically connected to the measured element. In this process, the current value needs to be obtained. Since the single-chip microcomputer cannot input analog signals, the current analog signals in the circuit are converted into digital signals through the A/D converter, and input to the single-chip microcomputer for processing. Since the output voltage is controlled by the single-chip microcomputer, the control strategy can also be converted into the corresponding output voltage signal. The single-chip microcomputer obtains the current value under each measured voltage, and through internal program processing, a set of data is obtained, stored in the storage module, and through the operation interface Display the data for the operator to observe and compare. Furthermore, the data can be wirelessly transmitted from the communication module to the computer algorithm system outside, and can also be completed by electrically connecting the storage module with the computer. The computer algorithm system provides the mathematical model inside the tested component, that is, the relationship between voltage, current and parameters. The relationship between them, and the precise value of the parameter to be measured is calculated by a suitable algorithm.

To sum up, the device parameter measurement device absorbs the idea of state estimation, detects the corresponding current through multiple measurements at different voltage values, and thus obtains multiple sets of data. The data is analyzed and calculated by the algorithm system to obtain the The parameters of the measured components have achieved the purpose of improving the measurement accuracy.

The computer software programs and circuit structures involved in the relevant modules in this system are technologies well known to those skilled in the art. The improvement of this system is the interaction or connection relationship between the modules, which is the overall structure of the system. The design to solve the corresponding technical problems to be solved by this system. Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes and modifications can be made to these embodiments without departing from the principle and spirit of the present invention , replacements and modifications, the scope of the present utility model is defined by the appended claims and their equivalents.

Claims (5)

1. A device parameter measuring device, comprising an operation interface, inside the device, and an algorithm system, is characterized in that: the inside of the device includes a step-down device, a single-chip microcomputer, a memory module, a communication module, a main circuit, an A/D converter, and the The input end of the step-down device is electrically connected to the output end of the external power supply, the output end of the step-down device is electrically connected to the input end of the single-chip microcomputer, and the output end of the operation interface is electrically connected to the input end of the single-chip microcomputer. The input end of the operation interface is electrically connected with the output end of the single-chip microcomputer, the output end of the single-chip microcomputer is electrically connected with the input end of the storage module, the output end of the storage module is electrically connected with the input end of the algorithm system, and the output end of the single-chip microcomputer is electrically connected. The terminal is electrically connected to the input terminal of the communication module, the output terminal of the communication module is connected to the input terminal of the algorithm system through a wireless channel, the output terminal of the single chip microcomputer is electrically connected to the input terminal of the main circuit, and the output terminal of the main circuit is connected to the input terminal of the main circuit. The input end of the A/D converter is electrically connected, the output end of the A/D converter is electrically connected to the input end of the single-chip microcomputer, the input end of the main circuit is electrically connected to the output end of the external power supply, and the main circuit is electrically connected. The output end is electrically connected with the input end of the unit under test. 2. A device parameter measuring device according to claim 1, characterized in that: said single-chip microcomputer, memory module, communication module, main circuit, and A/D converter constitute the internal structure of the device. 3. A device parameter measuring device according to claim 1, characterized in that: the interior of the device and the algorithm system constitute the whole design of the device. 4. A device parameter measuring device according to claim 1, characterized in that: said single-chip microcomputer is an MCS-51 single-chip microcomputer. 5. A device parameter measuring device according to claim 1, characterized in that: said main circuit is a single-phase bridge PWM rectifier circuit.