KR100802440B1 - Device for measuring life time of DC motor and relay product - Google Patents

Abstract

The present invention relates to an automatic life measuring device of a DC motor and a relay, and according to the automatic life measuring device of the present invention, it is possible to automatically test the final life of the DC motor and the relay, as well as the relay several times. Repeated on / off operation can automatically test how many times it can break down or withstand the sudden change of external power, and also the DC motor can repeat forward and reverse several times. Can be tested automatically.

In particular, the company that manufactures the washer motor can check whether the single-unit DC motor and the relay are reliable, and can check the finished product of the washer motor and check the life of the finished product. And there is an advantage that can be produced, supplied.

Motor, Relay, Life Measurement Device, Power Supply, Switch, Spherical Pulse Oscillator

Description

Device for measuring life time of DC motor and relay product

1 is a block diagram showing a preferred embodiment of the automatic life measurement apparatus according to the present invention,

FIG. 2 is a flow chart showing a switch operation procedure of the embodiment shown in FIG.

<Explanation of symbols for the main parts of the drawings>

1: fixed power supply 2: variable power supply

3: timer 4: spherical pulse oscillator

5: 1st relay 6: 2nd relay

7: counter SW1: variable power switch

SW2: fixed power switch SW3: manual bidirectional selector switch

SW4: Automatic bidirectional selector switch SW5: Forward drive switch

SW6: Reverse Drive Switch

SW1S, SW2S, SW3S, SW4S, SW5S, SW15S: Drive Cycle Selection Switch

The present invention relates to an automatic life measuring device of a DC motor and a relay, and more particularly, a complete washer motor or DC motor unit mounted on an automobile, a DC motor capable of automatically testing the final life of the relay belonging to the power supply unit; The present invention relates to an automatic lifetime measuring device of a relay.

In general, motors are the most widely used components among the driving parts that are electrically operated in automobiles, various electronic and mechanical products, and various machines and devices in industrial sites.

For example, in the case of automobiles, the surface of the wiper motor, the windshield glass and the rear glass of the wiper device that removes the foreign matter adhering to the windshield glass surface and wipes the rain water on the glass surface in case of raining The washer motor and the like of the washer liquid injector for spraying the washer liquid on the glass surface in order to remove the foreign matter more easily in the cleaning process.

In addition, in the example of the washer fluid injector of an automobile, the washer motor is composed of a motor part, a power driver, and the like, and the power driver is configured to include various elements and circuits such as an electromagnetic relay.

On the other hand, for example, in the washer fluid injector of an automobile, it is necessary to test the operation of the relay component in the power drive unit in order to determine the cause of the failure of the washer motor finished product, and the relay component is repeatedly turned on and off several times. It is necessary to test how many times it can withstand failures or sudden changes in external power.

In addition, the DC motor also needs to test how many times it can be rotated forward and reverse.

As such, it is necessary to find out the lifespan of single-unit DC motors and relays from washer motors, etc. from external environmental changes (changes in voltage and current) or internal characteristics (the maximum number of times they operate). You need a device to test.

In addition, a single part manufacturer will test each quality performance, but a company that purchases it and produces one finished product such as a washer motor needs to check whether the single parts are reliable using only a simple device, and also assemble the parts separately. In order to know why breakdowns or defects occur when a finished product such as a manufactured washer motor is delivered to an automobile company, a device that can measure the lifespan of a single product and a finished product in the company itself is required.

Nevertheless, no devices have been developed to date that can test the end-life of related components, ie unidirectional or bidirectional DC motors or relay products.

Normally, the test of the finished product of the washer motor only checks whether the voltage and current values of each component are exactly as determined at a predetermined voltage and checks for defects.

In addition, the finished product test considering the change of external temperature or unstable environment (change of voltage and current) in the operating state of the motor has not yet been carried out, and thus, to develop and produce a more reliable washer motor product and supply it to the automobile company. It is difficult.

Accordingly, the present invention has been invented in view of the above, and can automatically test the final service life and the number of operation of the relay included in the washer motor, the DC motor unit, and the power supply unit against external unstable voltage and current. It is an object of the present invention to provide an automatic lifetime measuring device for a DC motor and a relay.

The objects of the present invention are not limited to the above-mentioned objects, and other objects which are not mentioned will be clearly understood by those skilled in the art from the following description.

Hereinafter, the present invention will be described with reference to the accompanying drawings.

In order to achieve the above object, the present invention provides a variable power supply for supplying a variable DC power supply; A fixed power supply unit supplying a fixed DC power supply; A variable power switch and a timer provided on an output side circuit of the variable power supply unit; A single-pole single channel type first relay configured to switch a variable DC power applied through the variable power switch and the timer while being excited during the on operation of the manual bidirectional selection switch and being turned on when the contact is turned on; A forward drive switch and a reverse drive switch installed in parallel on the contact side output circuit of the first relay to switch a variable DC power supply; A fixed power switch and a spherical pulse oscillator installed on the output circuit of the fixed power supply; A manual bidirectional selection switch and an automatic bidirectional selection switch installed to switch a square pulse wave power source having a predetermined period generated and output by the square pulse oscillator; The single-pole double channel type is installed in parallel with the first relay to switch the variable DC power applied through the variable power switch and the timer while being excited during the on operation of the automatic two-way selection switch and the contact side is turned on during the excitation. It provides a automatic life measuring device of a DC motor and a relay configured to include a second relay.

Here, the square pulse oscillator generates a square pulse wave having a different period from the fixed DC power provided by the fixed power supply unit to output each square pulse wave for each cycle through the respective output circuit, each output circuit of the square pulse oscillator And a periodic selection switch for switching the periodic signal output from the spherical pulse oscillator between the manual bidirectional switch and the automatic bidirectional switch.

And a counter connected to the output side circuits of the forward switch and the reverse switch and the contact side output circuit of the second relay.

That is, the present invention relates to an automatic life measuring device of a DC motor and a relay, and more particularly, a DC capable of automatically testing the final life of a relay belonging to a complete washer motor or a DC motor unit and a power supply unit mounted on an automobile. The present invention relates to an automatic life measuring device for a motor and a relay.

According to the automatic life measuring apparatus of the present invention, the final life of the DC motor and the relay can be automatically tested, as well as how many times the relay is repeatedly turned on or off may cause a failure or an external power supply. It can automatically test how many times it can withstand the drastic change of, and the DC motor can also automatically test how many times forward and reverse rotations can be repeated.

In particular, the company that manufactures the washer motor can check whether the single-unit DC motors and relays are reliable. And there is an advantage that can be produced, supplied.

Specific details of other embodiments are included in the detailed description and the drawings.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be embodied in various forms, and the present embodiments are merely provided to make the disclosure of the present invention complete and the general knowledge in the art to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, the invention is defined only by the scope of the claims. Like reference numerals refer to like elements throughout.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing a preferred embodiment of the automatic lifetime measurement apparatus according to the present invention, Figure 2 is a flow chart showing the operation sequence of the embodiment shown in FIG.

As shown in the drawing, the automatic lifetime measurement apparatus of the DC motor and the relay according to the present invention includes a power supply unit, a spherical pulse oscillation unit 4, a relay, a timer 3, a counter 7, a switch, and the like.

First, the power supply unit can be divided into two types, the variable power supply unit 2 and the fixed power supply unit 1, the variable power supply unit 2 supplies a variable DC power of 12 ~ 24V and 1 ~ 5A, the fixed power supply (1) is preferably configured to supply a fixed DC power supply of 12V.

The variable power supply of 12 to 24V supplied by the variable power supply unit 2 corresponds to an external unstable voltage and current, and is an input signal for driving a relay in a power unit of a motor or a washer motor itself and a washer motor. It can be a interest drive power source.

In addition, the 12V fixed power supplied by the fixed power supply unit 1 is supplied to the spherical pulse oscillation unit 4 for periodic driving of the motor and the relay, and is supplied from the fixed power supply unit 1 and then the spherical pulse oscillation unit 4 The output power from the N) may be used as an input signal for operating the first relay 5 and the second relay 6 to be described later.

In more detail with respect to the configuration of the present invention, the variable power switch (SW1) is provided on the output circuit of the variable power supply unit 2, the timer 3 is installed in the output circuit of the variable power switch (SW1). do.

The output side circuit of the timer 3 is branched and connected to the contact side of the first relay 5 and the second relay 6, more specifically to the movable contact of each of the relays 5 and 6; The variable power supply supplied from the variable power supply unit 2 at the time of the ON operation of the power switch SW1 is input to the movable contact of the first relay 5 and the second relay 6 via the timer 3.

Here, the timer 3 is a state in which the relay belonging to the power supply unit of the motor unit, the washer motor, and the washer motor is supplied with an external unstable voltage and current, that is, 12 to 24 V (1 to 5 A) of the variable power supply unit 2. It works to see if it can withstand a limited time or a variable time with a variable power supply.

In addition, the contact output circuit of the first relay 5, that is, the output circuit connected to the fixed contact is branched, and a forward driving switch SW5 and a reverse driving switch SW6 are respectively provided on each branched circuit. Each circuit separately branched in the middle of the output side circuits of the drive switches SW5 and SW6 is connected to the counter 7.

The forward drive switch SW5 and the reverse drive switch SW6 are installed in parallel on the contact side output circuit of the first relay 5, so that the manual bidirectional select switch SW3, which will be described later, is turned on and operated. It is a switch to independently select forward and reverse rotation.

The counter 7 is a state in which a relay belonging to a motor unit, a washer motor finished product, and a washer motor power supply unit is supplied with an external unstable voltage and current, that is, 12 to 24 V (1 to 5 A) variable from the variable power supply unit 2. It works to see how many times it's operating on power.

The first relay 5 is a single pole single channel type SPST relay, the second relay 6 is a single pole double channel type SPDT relay, and these relays 5 and 6 are fixed power supply units 1. The on / off operation by the power supply provided by) serves to switch an external unstable voltage and current, that is, a 12 to 24 V (1 to 5 A) variable power supply from the variable power supply unit 2.

On the other hand, a fixed power switch SW2 is provided on the output side circuit of the fixed power supply unit 1, and a spherical pulse oscillator 4 for periodic driving of the motor and the relay is provided on the output side circuit of the fixed power switch SW2. Connection is installed.

The square pulse oscillator 4 generates a square pulse wave having a period of 1 sec, 2 sec, 3 sec, 4 sec, 5 sec, and 15 sec, respectively, using a DC 12 V power provided by the fixed power supply 1. Is output through each corresponding output side circuit.

Selection switches SW1S, SW2S, SW3S, SW4S, SW5S, and SW15S are provided on each output side circuit from which the square pulse oscillator 4 outputs the square pulse wave of each period.

The selection switches SW1S, SW2S, SW3S, SW4S, SW5S, and SW15S are switches provided to select and apply one periodic signal applied to each output circuit from the rectangular pulse oscillator 4.

In addition, a manual bidirectional selection switch SW3 is installed at an output side of the selection switches SW1S, SW2S, SW3S, SW4S, SW5S, and SW15S, and an automatic bidirectional selection switch SW4 is installed at another output side. The output side circuit of the selection switch SW3 is connected to the exciting side of the first relay 5, and the output side circuit of the automatic bidirectional selection switch SW4 is connected to the exciting side of the second relay 6, respectively.

Therefore, when the manual bidirectional selection switch SW3 is turned on, the periodic signal output from the spherical pulse oscillator 4 is applied to the excitation side of the first relay 5 to periodically drive the first relay 5 on / off. When the automatic bidirectional selection switch SW4 is turned on, the periodic signal output from the spherical pulse oscillator 4 is applied to the exciting side of the second relay 6 to periodically drive the second relay 6 on / off. Let's go.

The manual bidirectional selection switch SW3 is a switch for allowing the forward and reverse rotation of the motor to be independently selected, and the automatic bidirectional selection switch SW4 can be alternately automatically selected for the forward and reverse rotation of the motor. To be a switch.

In addition, an output side circuit connected to each fixed contact of the second relay 6 is connected to the counter 7.

Hereinafter, a method of operating the automatic lifetime measuring device of the present invention will be described.

As shown in FIG. 2, after the DC washer motor, DC motor or relay is connected to the final output circuit to determine the driving method, the variable power switch SW1 and the fixed power switch SW2 are simultaneously turned on.

Then, one of the selection switches SW1S, SW2S, SW3S, SW4S, SW5S, and SW15S selects one of the selection switches corresponding to the cycle desired for the test and performs the on operation.

Subsequently, in the forward or reverse rotation, when the manual bidirectional selection switch SW3 is turned on and then the forward drive switch SW5 is turned on, the final output circuit is connected to the output side of the forward drive switch SW5. The forward rotation signal is output.

On the other hand, when the reverse driving switch SW6 is turned on, the reverse rotation signal is output through the final output circuit connected to the output side of the reverse driving switch SW6.

At this time, the 12V power of the fixed power supply unit 1 is selected through the operation of the selector switch SW1S, SW2S, SW3S, SW4S, SW5S, SW15S, which are supplied from the rectangular pulse oscillator 4 while the 12V power of the fixed power supply 1 is supplied to the rectangular pulse oscillator 4. Since the rectangular pulse wave of the period is applied to the exciting side of the first relay 5 through the manual bidirectional selection switch SW3, the first relay 5 is turned on / off at the selected period.

Then, as either one of the forward drive switch SW5 and the reverse drive switch SW6 is selected and operated, the variable power switch SW1, the timer 3, and the first relay 5 of the variable power supply unit 2 are operated. The power applied through the contact side is output as a forward rotation signal or a reverse rotation signal through the on-operated forward drive switch SW5 or reverse drive switch SW6 and the final output circuit.

On the other hand, when the automatic two-way selector switch SW4 is turned on, the operation of the selector switch SW1S, which is turned on from the rectangular pulse oscillator 4 in a state in which the 12V power supply of the fixed power supply unit 1 is supplied to the rectangular pulse oscillator 4, The rectangular pulse wave of the period selected through SW2S, SW3S, SW4S, SW5S, and SW15S is applied to the excitation side of the second relay 6 through the automatic bidirectional selection switch SW4, and thus the second relay 6 at the selected period. Is turned on / off.

At this time, in the second relay 6, as the on / off operation is performed periodically, the movable contact is alternately formed at a selected period between the two fixed contacts. In the off operation, the movable contact is connected to the NC (normal close) fixed contact. In the ON operation, the movable contact forms a contact with the NO (normally open) fixed contact, and the forward and reverse signals are automatically output periodically through the two final output circuits.

Of course, the power applied from the variable power supply unit 2 through the contact side of the variable power switch SW1, the timer 3, and the second relay 6 is output as a forward rotation signal or a reverse rotation signal through the final output circuit. Then, power is applied through the final output circuit on one side, and then power is applied through the final output circuit on the other side in the next cycle, and power is applied through the final output circuit on the one side in the subsequent cycle, and then again in the next cycle. The form in which power is applied through the final output circuit of the other side is repeated periodically.

Thus, while the power is applied through the final output circuit, the timer 3 (testing after initialization and setting) can measure the time, i.e., the lifetime that the motor or relay can withstand by external unstable voltage and current, It can be seen whether it can withstand a limited time or a limited time.

Through the counter 7, it is possible to know how many times the motor or the relay is operated by the external unstable voltage and current in the first clear state.

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that. Therefore, the embodiments described above are to be understood in all respects as illustrative and not restrictive.

As described above, according to the automatic life measuring device according to the present invention, the automatic washing of the DC motor and the relay which can automatically test the final life of the washer motor mounted on the vehicle or the DC motor unit, the relay belonging to the power supply unit It relates to a life measuring device.

In addition, according to the automatic life measuring device of the present invention, how many times the relay component in the power drive unit may fail if the on / off operation is repeated repeatedly and withstand a certain number of times against sudden changes in the external power supply. It will be able to automatically test how many times it is possible, and the DC motor will also be able to automatically test how many times forward and reverse rotation can be repeated.

In particular, the company that manufactures the washer motor can check whether the single-unit DC motor and the relay are reliable, and can check the finished product of the washer motor and check the life of the finished product. And there is an advantage that can be produced, supplied.

Claims (4)

A variable power supply and a fixed power supply for supplying a variable DC power supply and a fixed DC power supply, respectively; A variable power switch and a timer provided on an output side circuit of the variable power supply unit; A first relay configured to switch a variable DC power applied through the variable power switch and the timer while being excited during an on operation of the manual bidirectional selection switch and being turned on when the contact is excited; A forward drive switch and a reverse drive switch installed in parallel on the contact side output circuit of the first relay to switch a variable DC power supply; A fixed power switch and a spherical pulse oscillator installed on the output circuit of the fixed power supply; A manual bidirectional selection switch and an automatic bidirectional selection switch installed to switch a square pulse wave power source having a predetermined period generated and output by the square pulse oscillator;  A second relay installed in parallel with the first relay to switch the variable DC power applied through the variable power switch and the timer while being excited during the on-operation of the automatic bidirectional selection switch and the contact side is turned on during the excitation; Automatic life measurement device of DC motor and relay composed. The method according to claim 1, The square pulse oscillator generates a square pulse wave having a different period from the fixed DC power provided by the fixed power supply unit, and outputs each square pulse wave for each cycle through each output circuit, and each output circuit of the square pulse oscillator and the An automatic lifetime measurement device for a DC motor and a relay, characterized in that a periodic selection switch for switching the periodic signal output from the spherical pulse oscillation unit is installed between the manual bidirectional switch and the automatic bidirectional switch. The method according to claim 1, And a counter connected to the output side circuits of the forward switch and the reverse switch and the contact side output circuit of the second relay. The method according to any one of claims 1 to 3, And the first relay has a single pole single channel type (SPST) configuration and / or the second relay has a single pole double channel type (SPDT) configuration.

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