CN110658449A

CN110658449A - Time relay calibration device and use method

Info

Publication number: CN110658449A
Application number: CN201911001158.XA
Authority: CN
Inventors: 黄新乐; 贾洪明; 张思政
Original assignee: State Run Wuhu Machinery Factory
Current assignee: State Run Wuhu Machinery Factory
Priority date: 2019-10-21
Filing date: 2019-10-21
Publication date: 2020-01-07

Abstract

The invention relates to a time relay calibration device and a use method thereof, the time relay calibration device comprises an instrument shell, a central control computer and an alternating current/direct current programmable power supply, wherein the instrument shell is provided with an FPGA control module which is used for timing by a built-in timing clock and uploading real-time voltage and detection timing time to the central control computer, and a quick socket which is correspondingly connected with the alternating current/direct current programmable power supply and the FPGA control module and is used for quickly plugging a time relay. Compared with the existing detection instrument on the market, the voltage selection switch and the alternating current-direct current selection switch are reduced; in the aspect of timing, a timing clock built in the FPGA control module is used for timing, so that a delay timing precision selection switch is reduced, the test time is saved, and the detection efficiency is improved; the problems that wiring is complex and time-consuming in time relay calibration and potential safety hazards exist when a double-pole double-throw switch is operated in the prior art are solved, and the time relays with different pins tested by a unified platform are realized.

Description

Time relay calibration device and use method

Technical Field

The invention relates to the technical field of relay calibration, in particular to a time relay calibration device and a using method thereof.

Background

The current time relay detection method is that a power supply and a digital millisecond instrument trigger input port are respectively connected to a time relay pin, a double-pole double-throw switch is used for simultaneously switching on the time relay power supply and the digital millisecond instrument trigger input port, and after preset time is reached, the digital millisecond instrument is triggered to record the time. With this method, the wiring method is cumbersome, and re-wiring is required for each measurement. The wiring error is easily caused, and certain safety risk exists when the double-pole double-throw switch is operated. At present, the hardware switches of the similar equipment are too many, the operation process is longer, and the universality aiming at different pins is not high.

Disclosure of Invention

In order to solve the technical problems, the invention provides a time relay calibration device and a use method thereof, which are used for avoiding repeated wiring of a relay with a pin and avoiding potential safety hazards.

The technical problem to be solved by the invention is realized by adopting the following technical scheme:

the utility model provides a time relay calibrating device, includes instrument shell, well accuse computer, alternating current-direct current programmable power supply, be equipped with on the instrument shell through built-in timing clock timing and with real-time voltage and detect the FPGA control module on timing time upload to well accuse computer, with alternating current-direct current programmable power supply and FPGA control module correspond be connected and be used for the quick socket that connects of time relay to insert fast.

Further, the quick socket comprises a probe needle bed fixed on the shell of the instrument, a test probe arranged on the probe needle bed and used for being matched with the pins of the time relay, and a positioning column used for providing guidance.

Furthermore, the FPGA control module is provided with a high-level pin, a low-level pin and a level change trigger timing pin which are correspondingly connected with the time relay.

Furthermore, the FPGA control module is correspondingly connected with the central control computer and the alternating current-direct current programmable power supply through an RS232 data line.

A use method of an automatic detection device applying a time relay comprises the following specific steps:

(1) inserting a time relay to be tested into a proper quick socket, and correspondingly connecting coil pins of the time relay with the positive electrode and the negative electrode of the alternating current-direct current programmable power supply;

(2) correspondingly connecting a high-level pin, a low-level pin and a level change triggering timing pin of the FPGA control module with a normally closed end, a normally opened end and a public end of a time relay to be tested;

(3) switching on a 220V external power supply, pressing a power switch, turning on time relay test software, clicking a test mode interface, and setting a test voltage (if the selection is wrong, clicking a reset button, and reselecting the voltage);

(4) clicking a 'start test' button after a voltage value appears in a 'real-time voltage' frame on a central control computer screen;

(5) after the working state of the relay with the time to be measured jumps, the timing time appears in a timing time frame on a central control computer screen;

(6) and after the timing time is recorded, resetting the click time after the click test is finished, and finishing the calibration test of the time relay.

The invention has the beneficial effects that:

compared with the existing detection instrument on the market, the voltage selection switch and the alternating current-direct current selection switch are reduced; in the aspect of timing, a timing clock built in the FPGA control module is used for timing, so that a delay timing precision selection switch is reduced, the test time is saved, and the detection efficiency is improved; the problems that wiring is complex, time is consumed for repeated wiring and potential safety hazards exist in the operation of a double-pole double-throw switch in the conventional time relay calibration process are solved. The time relay for testing different pins by the unified platform is realized.

Drawings

The invention is further illustrated with reference to the following figures and examples:

FIG. 1 is a schematic block diagram of an apparatus of the present invention;

FIG. 2 is a schematic view of the apparatus of the present invention;

FIG. 3 is a schematic structural diagram of the quick socket of the present invention;

FIG. 4 is a schematic flow chart of the present invention.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further explained in the following with the accompanying drawings and the embodiments.

As shown in fig. 1 to 4, a time relay calibration device includes an instrument housing 1, a central control computer 2, an ac/dc programmable power supply 3, an FPGA control module 4, and a fast socket 5. The central control computer 2, the alternating current and direct current programmable power supply 3, the FPGA control module 4 and the quick socket 5 are all arranged on the instrument shell 1; the central control computer 2, the alternating current and direct current programmable power supply 3 and the FPGA control module 4 are connected in sequence through RS232 data lines; the central control computer 2 is used for man-machine interaction, including voltage selection, determination of starting test, feedback of test results and the like. The alternating current-direct current programmable power supply 3 is used for generating working voltages of time relays of different models. The FPGA control module 4 is used for transmitting a computer instruction to the alternating current-direct current program-controlled power supply to generate corresponding voltage, detecting whether the voltage is normal, building a standard clock for timing, and uploading various data such as real-time voltage, detection timing time and the like to a computer. The quick socket 5 is used for realizing quick plug-in of the time relay according to the position of a pin of the time relay; the quick socket 5 comprises a probe needle bed 6 fixed on the instrument shell 1, a test probe 7 arranged on the probe needle bed 6 and used for being matched with a time relay pin, and a positioning column 8 used for providing guidance; the quick socket 5 is provided with four and four different types.

And the FPGA control module 4 is provided with a high-level pin, a low-level pin and a level change triggering timing pin which are correspondingly connected with a normally closed end, a normally opened end and a public end of the time relay.

The working principle is as follows:

the positive and negative poles of the alternating current and direct current programmable power supply 3 are connected to a coil pin of the time relay through the quick-charging plug-in tool, and a high-level pin, a low-level pin and a level change trigger timing pin on the FPGA control module 4 are connected to a normally closed end, a normally open end and a public end of the time relay through the quick-charging plug-in tool. After the test is started, the FPGA control module 4 closes the power supply switch at the coil end of the time relay through the AC-DC process power supply 3, the time relay starts to work, and meanwhile, a timing clock built in the FPGA control module 4 is triggered to start timing. When the time relay reaches the preset time, the normally closed end of the time relay is disconnected, the normally open end is closed, the timing port of the FPGA control module 4 is changed from a high level to a low level, the built-in timing clock is triggered to stop timing, the timing result is displayed on the screen of the central control computer 2, and the preset time and the timing time are compared to finish the detection of the time relay.

(1) the time relay to be tested is inserted into a proper quick socket 5, and the coil pins of the time relay are correspondingly connected with the positive electrode and the negative electrode of the alternating current-direct current programmable power supply 3. After the time relay to be tested is inserted into the quick socket 5, the firmness and reliability are ensured, and the test result is prevented from being influenced.

(2) And correspondingly connecting a high-level pin, a low-level pin and a level change triggering timing pin of the FPGA control module 4 with a normally closed end, a normally opened end and a public end of the time relay to be tested.

(3) A 220V external power supply is switched on, and a power supply switch is pressed, so that a power supply lamp is turned on; the "time relay test software" clicks "the test mode" interface, sets the test voltage (if wrong, click "reset" button, reselect voltage).

After the time relay test software is turned on, a communication interface COM1 and a communication speed 9600 are selected in a communication selection page, and a connection button is clicked.

The specific process of setting the test voltage is to select a corresponding voltage button according to the working voltage of the time relay to be tested and then click a 'confirm' button.

(4) After a voltage value appears in a real-time voltage frame on the screen of the central control computer 2, a 'start test' button is clicked.

(5) After the working state of the relay with the time to be measured jumps, the timing time appears in a timing time frame on the screen of the central control computer 2.

The specific process of the working state jump of the time relay to be measured clicks a corresponding key on the central control computer 2, the FPGA control module 4 controls the alternating current-direct current programmable power supply 3 to supply power to the time relay, a built-in timing clock in the FPGA control module starts timing, when the time relay reaches preset time, a normally closed end of the time relay is disconnected, a normally open end is attracted, a time relay contact jumps, the level change of the FPGA control module 4 triggers the level of a timing pin to change, the built-in timing clock is triggered to stop timing, and a timing structure is displayed on a screen of the central control computer 2.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a time relay calibrating device, includes instrument shell (1), well accuse computer (2), alternating current-direct current programme-controlled power supply (3), its characterized in that: the instrument shell (1) is provided with an FPGA control module (4) which is used for timing through a built-in timing clock and uploading real-time voltage and detection timing time to the central control computer (2), and a quick socket (5) which is correspondingly connected with the AC/DC programmable power supply (3) and the FPGA control module (4) and is used for quickly plugging a time relay.

2. A time relay calibration device according to claim 1, wherein: the quick socket (5) comprises a probe needle bed (6) fixed on the instrument shell (1), a test probe (7) arranged on the probe needle bed (6) and used for being matched with a time relay pin, and a positioning column body (8) used for providing guidance.

3. A time relay calibration device according to claim 1, wherein: and the FPGA control module (4) is provided with a high-level pin, a low-level pin and a level change triggering timing pin which are correspondingly connected with the time relay.

4. A time relay calibration device according to claim 1, wherein: the FPGA control module (4) is correspondingly connected with the central control computer (2) and the alternating current/direct current programmable power supply (3) through RS232 data lines.

5. Use of a time relay calibration device according to any of claims 1 to 4, characterized in that: the method comprises the following specific steps:

(1) inserting a time relay to be tested into a proper quick socket (5), and correspondingly connecting coil pins of the time relay with the positive electrode and the negative electrode of the alternating current-direct current programmable power supply (3);

(2) correspondingly connecting a high-level pin, a low-level pin and a level change triggering timing pin of the FPGA control module (4) with a normally closed end, a normally opened end and a public end of a time relay to be tested;

(4) clicking a 'start test' button after a voltage value appears in a 'real-time voltage' frame on a screen of the central control computer (2);

(5) after the working state of the relay with the time to be measured jumps, the timing time appears in a timing time frame on the screen of the central control computer (2);

(6) and after the timing time is recorded, resetting the click time after the click test is finished, and finishing the test of the time relay.