CN212134896U

CN212134896U - Anti-reverse-insertion PG motor speed measuring system

Info

Publication number: CN212134896U
Application number: CN202020175821.XU
Authority: CN
Inventors: 朱定林; 郑志辉; 周克乐; 陈思; 吴江勇; 高耀雅
Original assignee: Foshan Xiaxin Technology Co ltd
Current assignee: Foshan Xiaxin Technology Co ltd
Priority date: 2020-02-17
Filing date: 2020-02-17
Publication date: 2020-12-11
Anticipated expiration: 2030-02-17

Abstract

The utility model discloses an anti-reverse-plugging PG motor speed measurement system, which comprises a power supply processing module, a polarity switching module, a processor and a motor feedback module, wherein the power supply processing module is connected with the processor; the polarity switching module comprises a first single-pole double-throw analog switch and a second single-pole double-throw analog switch, a first interface is led out from a common end of the first single-pole double-throw analog switch, and a normally open end and a normally closed end of the first single-pole double-throw analog switch are respectively connected with a negative electrode and a positive electrode of the power supply processing module; a second interface is led out from a common end of the second single-pole double-throw analog switch, and a normally open end and a normally closed end of the second single-pole double-throw analog switch are respectively connected with the anode and the cathode of the power supply processing module; the first interface and the second interface are used for being connected with a positive electrode port and a negative electrode port of the motor to be tested at will; the motor feedback module is connected to a motor to be tested through a feedback interface and is connected with the processor.

Description

Anti-reverse-insertion PG motor speed measuring system

Technical Field

The utility model belongs to the technical field of the technique that motor performance detected and specifically relates to indicate a prevent inserting reverse PG motor speed measurement system.

Background

The specifications of PG motors on the market are different, and mainly reflect that the power supply direction of a power supply is different from the number of one-turn pulses. Chinese patent CN204925354U discloses a motor testing tool, which comprises a rotation speed detection module, a current detection module and a voltage detection module, wherein the three modules are connected with a motor to be tested through a motor feedback interface to detect the current, voltage and rotation speed of the motor under a testing environment, and the testing result is processed by a single chip microcomputer and then displayed by a display module. Most of PG motor feedback loops processing the above adopt a single-wire communication mode, although a feedback line is positioned in a middle line, the positive and negative of a power supply are easy to be mistaken, so that a sensor inside the motor is damaged, and the period of debugging the system is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's not enough, provide a prevent inserting reverse PG motor system of testing speed.

In order to achieve the above object, the utility model provides a PG motor speed measurement system that prevents reverse insertion, including power processing module, polarity switching module, treater and motor feedback module, wherein, the external alternating current inserts the power processing module; the power supply processing module is connected with the processor; the polarity switching module comprises a first single-pole double-throw analog switch and a second single-pole double-throw analog switch, a first interface is led out from a common end of the first single-pole double-throw analog switch, and a normally open end and a normally closed end of the first single-pole double-throw analog switch are respectively connected with a negative electrode and a positive electrode of the power supply processing module; a second interface is led out from a common end of the second single-pole double-throw analog switch, and a normally open end and a normally closed end of the second single-pole double-throw analog switch are respectively connected with the anode and the cathode of the power supply processing module; the first interface and the second interface are used for being connected with a positive electrode port and a negative electrode port of the motor to be tested at will; the first single-pole double-throw analog switch and the second single-pole double-throw analog switch are synchronously switched to synchronously switch the polarities of output currents of two public ends; the motor feedback module is connected to a motor to be tested through a feedback interface and is connected with the processor.

Further, the display device also comprises a display module connected with the processor.

The utility model adopts the above technical scheme, its beneficial effect lies in: the state of the motor to be tested is judged by utilizing the processor and the motor feedback module to confirm whether the wiring is normal, and then the output polarities of the first single-pole double-throw analog switch and the second single-pole double-throw analog switch can be rapidly switched to adapt to the motor to be tested without considering the polarity problem of the wiring, so that the operation is simple and the compatibility is strong.

Drawings

Fig. 1 is a schematic diagram of the speed measuring system of the present invention.

The system comprises a power supply processing module, a 2-polarity switching module, a 3-processor, a 4-motor feedback module, a 5-display module, a 21-first single-pole double-throw analog switch and a 22-second single-pole double-throw analog switch.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete.

Referring to fig. 1, the PG motor speed measurement system for preventing reverse insertion comprises a power supply processing module 1, a polarity switching module 2, a processor 3, a motor feedback module 4 and a display module 5. The power supply processing module 1 is a full-bridge rectification circuit, namely: the power supply processing module 1 is composed of four diodes which are connected in a closed loop mode in sequence, the positive electrode and the negative electrode of an external power supply are respectively connected to two input ports of the full-bridge rectification circuit, and the external power supply is rectified and then output through the power supply processing module 1.

In this embodiment, the polarity switching module 2 includes a first single-pole double-throw analog switch 21 and a second single-pole double-throw analog switch 22, wherein a first interface is led out from a common end of the first single-pole double-throw analog switch 21, and a normally open end and a normally closed end of the first single-pole double-throw analog switch 21 are respectively connected with a negative electrode and a positive electrode of the power processing module 1. A second interface is led out from a common end of the second single-pole double-throw analog switch 22, and a normally open end and a normally closed end of the second single-pole double-throw analog switch 22 are respectively connected with a positive electrode and a negative electrode of the power supply processing module 1; the output current polarity of the common terminal of the first single-pole double-throw analog switch 21 is always opposite to that of the common terminal of the second single-pole double-throw analog switch 22, and the first single-pole double-throw analog switch 21 and the second single-pole double-throw analog switch 22 are synchronously switched to synchronously switch the output current polarities of the two common terminals; the first interface and the second interface are used for being connected with the positive port and the negative port of the motor to be tested at will, namely, the first interface and the second interface can be selected at will to be connected with the positive port and the negative port of the motor to be tested.

In this embodiment, the motor feedback module 4 is connected to the motor to be tested through the feedback interface, so as to receive the feedback signal of the motor to be tested through the feedback interface, that is, the rotation speed, the current and the voltage of the motor to be tested are detected.

In the embodiment, the motor feedback module 4 is connected with the processor 3, and the processor 3 can receive and process data from the motor feedback module 4; still include the display module 5 that is connected with treater 3, display module 5 shows relevant feedback rotational speed data, and wherein, the display module 5 of this embodiment comprises the quadbit-yin charactron, and the drive function pin of the charactron of corresponding treater 3 that should pay of charactron to in real time feedback display awaits measuring the rotational speed of motor.

In this embodiment, the processor 3 is connected to the polarity switching module 2, that is, two control pins of the processor 3 are connected to the first single-pole double-throw analog switch 21 and the single-pole double-throw analog switch 22.

To facilitate understanding of the present embodiment, the following description is made with reference to specific working processes.

After the motor to be tested is connected into the test system, the processor 3 adopts an edge triggering mode to control the external power supply to output to the motor to be tested through the power supply processing module 1 and the polarity switching module 2, and the processor 3 at the moment judges whether the motor to be tested has the condition of polarity error according to whether the motor feedback module 4 acquires a pulse signal generated by the motor to be tested, namely:

the first condition is as follows: the motor feedback module 4 acquires a pulse signal generated by the motor to be detected, and indicates that the output current polarity connection of the motor to be detected and the first single-pole double-throw analog switch 21 and the second single-pole double-throw analog switch is normal at the moment, so that subsequent detection work can be performed;

case two: the motor feedback module 4 continuously cannot acquire a pulse signal generated by the motor to be tested, and then indicates that the motor to be tested cannot normally work at the moment, and the connection with the output current polarities of the first single-pole double-throw analog switch 21 and the second single-pole double-throw analog switch 22 is wrong, so that the processor 3 transmits a switching execution signal to the first single-pole double-throw analog switch 21 and the second single-pole double-throw analog switch 22 to synchronously switch the first single-pole double-throw analog switch 21 and the second single-pole double-throw analog switch, and the normally closed end is switched to the normally open end, so that the output current polarity of the public end is changed, that is: the common terminal of the first single-pole double-throw analog switch 21 is switched from the positive pole to the negative pole, the second single-pole double-throw analog switch 22 is switched from the negative pole to the positive pole, so that the rapid switching of the output current polarity is completed, whether the wiring of the motor to be detected is normal or not is judged again, and if a pulse signal is obtained, the subsequent detection work can be carried out; otherwise, if the pulse signal can not be obtained, the polarity is switched and determined again.

Further, in the second case, if the number of times of polarity switching operations is predetermined (preferably 10), it is determined that the motor to be tested is in an uncontrolled state at this time and a fault or abnormal wiring condition exists, and at this time, an abnormal code may be displayed by the display module 5 to remind an operator to perform manual troubleshooting.

Further, the processor 3 of this embodiment may adopt a single chip, and data communication and data processing between the single chip and the power processing module 1, the polarity switching module 2, the motor feedback module 4, and the display module 5 belong to the field of computer programs, and the related computer software program and the automation control principle belong to conventional technical means for those skilled in the art, so that the related program parts are not limited here, and a derivative control manner may be adopted, and the principle thereof is not described here again.

The above-described embodiments are merely preferred embodiments of the present invention, which are not intended to limit the present invention in any way. Those skilled in the art can make many changes, modifications, and equivalents of the embodiments of the invention without departing from the scope of the invention. Therefore, the content of the technical scheme of the utility model, according to the equivalent change made by the idea of the utility model, should be covered in the protection scope of the utility model.

Claims

1. The utility model provides a prevent inserting reverse PG motor speed measurement system which characterized in that: the device comprises a power supply processing module (1), a polarity switching module (2), a processor (3) and a motor feedback module (4), wherein external alternating current is accessed to the power supply processing module (1); the power supply processing module (1) is connected with the processor (3); the polarity switching module (2) comprises a first single-pole double-throw analog switch (21) and a second single-pole double-throw analog switch (22), a first interface is led out from a common end of the first single-pole double-throw analog switch (21), and a normally-open end and a normally-closed end of the first single-pole double-throw analog switch (21) are respectively connected with a negative electrode and a positive electrode of the power supply processing module (1); a second interface is led out from a common end of the second single-pole double-throw analog switch (22), and a normally open end and a normally closed end of the second single-pole double-throw analog switch (22) are respectively connected with a positive electrode and a negative electrode of the power supply processing module (1); the first interface and the second interface are used for being connected with a positive electrode port and a negative electrode port of the motor to be tested at will; the first single-pole double-throw analog switch (21) and the second single-pole double-throw analog switch (22) are synchronously switched to synchronously switch the polarities of output currents at two public ends; the motor feedback module (4) is connected to a motor to be tested through a feedback interface, and the motor feedback module (4) is connected with the processor (3).

2. The PG motor speed measurement system for preventing reverse insertion according to claim 1, wherein: and the display module (5) is connected with the processor (3).