KR200283969Y1 - Inspect Voltage Recorder - Google Patents

Abstract

The present invention relates to a test voltage recorder, comprising: a key input unit including a plurality of function keys; Communication module for data communication with an external computer; A power supply unit for supplying driving power by transforming and rectifying a voltage input from the outside; A voltage detector connected to the power supply and configured to monitor an AC power applied thereto; A control unit for outputting a corresponding control signal according to a key input signal of the key input unit, transmitting and receiving set data, and controlling display of an operation state; An address decoder for buffering data exchange with the controller; A memory unit for outputting data stored as a control signal of a controller or storing input data through the address decoder; An LCD displaying visual data under control of a control unit through the address decoder; A tester detecting a voltage input from a test measurement terminal for test; It includes a voltage recording unit for recording the voltage detected by the detection unit, to monitor and record the voltage of the wiring line in order to maintain the standard voltage of the power system and supply the appropriate voltage, the voltage characteristics and load It can be statistically analyzed by analyzing the voltage drop.

Description

Inspect Voltage Recorder

The present invention relates to a test voltage recorder, and more particularly, to a multi-function test voltage recorder that periodically measures, monitors, and records a voltage of a wiring line in order to maintain a standard voltage of a power system.

Conventionally, power drawn from an external columnar transformer or the like is applied to a corresponding load through an integrated power meter. That is, the integrated power meter that integrates the power usage includes a circuit breaker for sensing the flow of the incoming power and integrating it numerically, preventing the overvoltage and overcurrent and cutting off the power supplied by a short circuit of the load.

Such a power supply is not always supplied with a constant constant voltage, the power fluctuation occurs according to the load fluctuation. In addition, there was a fear that a malfunction or loss of the actual electric and electronic devices may be feared due to sudden increase in load or voltage drop of the supplied power due to the failure of recognizing the magnitude of the changed power.

In particular, when the amount of power applied is not constant in the case of the industry rather than the home, property loss due to malfunction or loss of expensive equipment or devices may be large, and in the case of precise electronic equipment such as computers, voltage fluctuations may occur. There was a problem that can cause a huge loss.

The present invention is a device for monitoring and recording the voltage of the wiring line in order to supply an appropriate voltage for the purpose of maintaining the standard voltage of the power system in view of the above-mentioned conventional problems, the voltage fluctuation state of the power system for a certain period of time The objective is to provide a versatile inspection voltage recorder that periodically measures, records and stores and analyzes and statistics the characteristics of voltage and voltage drop according to the load using the corresponding analysis program.

1 is a block diagram of a test voltage recorder according to the present invention;

2 is a circuit diagram of a test voltage recorder according to the present invention;

3 is an external view of a test voltage recorder according to the present invention;

4 is a view showing a display state of the LCD according to the use of the present invention.

♣ Explanation of symbols for main part of drawing ♣

10: key input unit 20: communication module

30: power supply unit 40: voltage detection unit

50: control unit 60: address decoder

62: memory section 64: battery backup real-time clock section

70: LCD (Liquid Crystal Display) 80: Test part

82: voltage recorder 90: computer

The present invention for achieving the above object, a key input unit including a plurality of function keys; Communication module for data communication with an external computer; A power supply unit for supplying driving power by transforming and rectifying a voltage input from the outside; A voltage detector connected to the power supply and configured to monitor an AC power applied thereto; A control unit for outputting a corresponding control signal according to a key input signal of the key input unit, transmitting and receiving set data, and controlling display of an operation state; An address decoder for buffering data exchange with the controller; A memory unit for outputting data stored as a control signal of a controller or storing input data through the address decoder; An LCD displaying visual data under control of a control unit through the address decoder; A tester detecting a voltage input from a test measurement terminal for test; It is characterized in that it provides a test voltage recorder comprising a voltage recorder for recording the voltage detected by the test part.

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

1 is a block diagram of a test voltage recorder according to the present invention, FIG. 2 is a detailed circuit configuration diagram, and FIG. 3 is an external view.

The key input unit 10 includes a plurality of function keys. The key input unit 10 includes a test switch SW4 for checking a test state in a state in which the test probe 93 is in contact with a measurement unit, and a time and RAM Set position shift key (SW1) to move the cursor direction of the clear function and LCD window, set value change key (SW2) to select screen selection, ID number, check function and numerical increase, YES / NO, and measurement time And an ID number, a recording start / end function, and a setting confirmation key SW3 for setting a value adjusted by the setting position moving key SW1 and the setting value changing key SW2.

The communication module 20 is for data communication with an external computer 90, and the communication module 20 preferably communicates with a short-range serial interface. Therefore, it is preferable to connect the serial communication cable (RS-232C) 95 with the computer 90.

The power supply unit 30 supplies a driving power by transforming and rectifying a voltage input from the outside, and the power supply unit 30 includes a transformer T1 for transforming the input AC power AC and an AC power supply ( Diodes D5 and D6 for rectifying AC to a DC power source DC and a regulator U6 for supplying a constant voltage are included, and a driving power for driving the device is supplied from the regulator U6.

The voltage detector 40 is connected to the power supply unit 30 to monitor the AC power applied to the voltage detector 40, the integrated circuit U8 is applied and can be measured by an electronic method. The integrated circuit U8 used as the voltage detector 40 is precisely measured, easy to use, inexpensive, and is applied to an AC power line monitoring device. The voltage detector 40 may utilize a method of allowing users to select their own power supply source by using the power line grid liberalization wind. In other words, the price of user service is determined by the price competitiveness of power consumption per hour, which requires sophisticated power usage monitoring. This power monitoring will depend on the electronic power meter in each home. Regardless of users, electricity usage monitoring is done via single-phase AC lines.

The controller 50 outputs a control signal corresponding to the key input signal of the key input unit 10, transmits and receives the set data, and controls the display of the operation state. The controller 50 controls the microprocessor U2. Is applied. The microprocessor U2 of the controller 50 includes a test light emitting diode L1 which can visually check the test record state.

The address decoder 60 buffers the exchange of data with the controller 50. The address decoder 60 converts an analog signal into a digital signal or a digital signal into an analog signal.

The memory unit 62 outputs the data stored as the control signal of the controller 50 through the address decoder 60 or stores the input data. The memory unit 62 applies the flash memory U5. In addition, the memory 62 may be RAM, ROM, EEPROM, etc. as necessary.

The LCD 72 displays visual data under the control of the control unit 50 through the address decoder 60, and the LCD 72 is connected to the LCD connection unit 70 for the interface of the data.

The inspection unit 80 detects and records the voltage input from the inspection measurement terminal JP3 for inspection, and the inspection unit 80 is connected with a inspection probe 93 to the inspection measurement terminal JP3. A display light emitting diode L2 for checking the state of the state of the inspection when the inspection switch SW4 is pressed, and a buzzer BZ1 for informing the state of the inspection are included. In addition, when the recorder is used, a 9V battery (BATTERY) that can be used without supplying power from the outside is incorporated.

In addition, the voltage recording unit 82 includes an integrated circuit U9 for recording data detected by the inspection unit 80.

In addition, in the present invention, a computer 90 connected to the communication module 20 to receive the test data stored in the memory 62 is connected, and the computer 90 is an analysis program for analyzing the test data. (92) is included. The analysis program 92 can be used in a Windows environment. Reference numeral 64 in the figure is an integrated circuit used as a battery backup real-time clock.

The power supply for the inspection voltage recorder according to the present invention configured as described above is AC80V to 300V. Sampling time is 2, 5, 10, 15, 20, 30, 60 (seconds, minutes), but more measurement time can be added. ID No. can measure and record more than 30 points and can be changed according to sampling time and total measurement time. Furthermore, the LCD 72 displays the current date and time (year, month, day, hour, minute), and the measurement location number (ID NO.) Displays four digits, and starts measurement by measurement location number (ID NO.). Display the time and display the measured voltage (4 digits). In addition, the measurement of the measurement voltage and the power failure / recovery time is recorded, the real time clock can be recorded for each sampling time, and the recorded data can be transmitted to the computer 90 for analysis by the analysis program 92.

The analysis program 92 includes data selection and reception, voltage graph analysis, data list analysis, average voltage analysis, power failure data analysis, upper / lower limit data analysis, voltage measurement annual statistics, voltage measurement record, customer management, configuration, Clear RAM, update programs and print report forms.

One end of the probe (93) for the test is connected to the test terminal (JP3) configured on the left side of the upper side of the test voltage recorder (100) of the present invention, and the part to measure the other end of the test probe (93) After contacting, press the switch SW4 to start the test. When the voltage is sensed, the display light emitting diode L2 is turned on and a buzzer sound is generated from the buzzer BZ1. It is preferable to use when the AC power source AC of the recorder 100 is cut off.

Next, the method of using the test voltage recorder 100 will be described with reference to FIG. 4, and the initial screen is displayed after the manufacturer's logo is displayed on the LCD 72 screen (FIG. 4A) simultaneously with the input of power (FIG. 4B). And FIG. 4C). When the setting value change key SW2 is pressed in the initial screen state, the screen of FIG. 4D appears. When the setting confirmation key SW3 is pressed again, the screen of FIG. 4E is displayed.

The initial screen is composed of two types, and when the initial screen 1 (Fig. 4B) (the manufacturer's logo, measurement date, time, measurement order, measurement location number (ID NO.) And measurement voltage are displayed) is shown in Figs. 4D and 4E. In this order, it changes to initial screen 2 (Fig. 4C), and initial screen 2 (Fig. 4C) (measurement start date, hour, minute and ID NO, measurement sequence, present time (day-hour: minute) and measurement voltage) In this case, the operation is changed to the initial screen 1 (FIG. 4B) in the order of FIGS. 4D and 4E.

When the password set in the inspection voltage recorder is changed, when the setting position shift key SW1 is pressed on the initial screen, the RAM erasing setting screen appears as shown in FIG. 4F. However, you cannot go to the password menu while recording, and a message appears.

Move the cursor using the setting position shift key (SW1), set the password with the set value change key (SW2), set the clear ram (No) to the set value change key (SW2), and then confirm the setting. Press (SW3) and the New Pass Word screen appears. At this time, move the cursor using setting position shift key (SW1), set new password number with setting value change key (SW2), select Yes and press setting confirmation key (SW3) to change the password and return to the initial screen. do. When No is selected and the setting confirmation key (SW3) is pressed, the previous password is retained and the display returns to the initial screen (Fig. 4G). This is an example of changing the password from 2002 to 2003.

Next, by changing the date and time, pressing the set position shift key (SW1) in the initial screen, the RAM erase setting screen as shown in Figure 4h appears. However, during recording, you cannot go to the date and time menu and a message appears. Without entering a password, press the setting confirmation key (SW3) at No to enter the date and time setting. At this time, move the cursor with the setting position shift key SW1 and set the number with the setting value change key SW2, and then press the setting confirmation key SW3 to end the setting and return to the initial screen. If you do not want to correct, press the setting confirmation key (SW3) to exit the setting and return to the initial screen (Fig. 4i).

Next, as the RAM erase, the RAM can be erased in the test voltage recorder 100 and the analysis program 92. That is, when the setting position shift key SW1 is pressed on the initial screen, the RAM erasing setting screen shown in FIG. 4J is displayed. However, you cannot go to the RAM erase menu while recording and a message appears. Move the cursor using the setting position shift key (SW1), set the password with the set value change key (SW2), set the clear ram (Yes) to the set value change key (SW2), and then press the set confirmation key ( Press SW3) to clear the RAM clear screen and clear the RAM. At this time, the RAM erase elapsed time is displayed, and when it is completed, it returns to the initial screen (FIG. 4K).

The recording sampling time setting and ID NO. For granting and recording start, the setting screen shown in Fig. 4L appears when the setting confirmation key SW3 is pressed on the initial screen. As shown in the setting screen of Fig. 4M, the cursor is automatically placed at the sampling time setting position, and the sampling time is set by the setting value changing key SW2. 30 minutes is set as an initial value. When the sampling time is set, ID NO. After moving the cursor to the position, change ID NO. Set the number of (Fig. 4n). ID NO. If inputting the previously used ID NO., It does not move to the next item or returns to the initial screen. Sampling time and ID NO. After setting, press the setting confirmation key (SW3) to display the setting screen of Figure 4o. At this time, if NO is selected with the setting value changing key SW2 and the setting confirmation key SW3 is pressed, recording starts and the test light emitting diode L1 flashes. If the storage capacity is insufficient during recording, the recording is automatically terminated and displayed on the screen as shown in Figs. 4P and 4Q. If the SRAM END Memory Message is displayed during recording or when the power is turned on, it cannot be used. Therefore, the recorded data is transferred to the computer 90 and used after the RAM clear. RAM erasing is also possible by key operation of the recorder 100, and the analysis program 92 of the computer 90 can be used.

In addition, as the end of recording, if the setting confirmation key (SW3) is pressed on the initial screen during recording, the screen shown in Fig. 4R is displayed. At this time, selecting Yes and pressing the setting confirmation key (SW3) for setting value changes the recording To exit and return to the initial screen. When the recording ends, the flashing light emitting diode L1 stops and turns on.

Also, ID NO. As a list confirmation, when the setting value change key SW2 is pressed on the initial screen, the screen of Fig. 4S appears. ID NO. In the list screen, select Yes as the setting value changing key SW2 and press the setting confirmation key SW3 to set the screen as shown in FIG. 4T. Press setting position shift key (SW1) to measure ID NO. It is displayed on the screen in order (Fig. 4u). The measurement sequence, sampling time, ID NO. And recording start time are displayed. At this time, if the setting confirmation key (SW3) is pressed, the list of IDs being recorded most recently is displayed. The number of Start is ID NO. The record start date and time. ID NO. If the setting value change key SW2 is pressed again in the list screen, the FIG. 4V screen appears. At this time, when the setting value change key SW2 is selected and the setting confirmation key SW3 is pressed, the screen returns to the initial screen.

As another message, this message appears when the setting position shift key SW1 is operated during recording, as shown in FIG. 4W. If the capacity of the RAM is insufficient during recording, a message as shown in FIG. 4x appears.

In the method of transmitting / receiving data stored in the recorder 100 to the computer 90, first, recording of the recorder being recorded is terminated, and the AC power cord 94 is disconnected to cut off the power. After connecting the communication cable 95 to the recorder 100 and the computer 90, the AC power cord 94 of the recorder 100 is connected to supply power. The analysis program 92 of the computer 90 is executed, a port to be connected between the serial ports COM1 and COM2 is set and transmission and reception are started. When the reception of the data to the computer 90 is completed, the data is stored and the RAM of the recorder is erased. If you do not erase the RAM, the recorder may not work. When data reception and RAM erasing are completed, the communication cable 95 is removed after the recorder is powered off.

When the analysis program 92 is set up in a computer, the setting is performed according to the setting step, and the user can operate the desired program.

As described above, the test voltage recorder of the present invention monitors and records the voltage of the wiring line for maintaining the standard voltage of the power system and supplying an appropriate voltage. It is recognizable, easy to carry and install, and when using only the recorder, a separate power supply is unnecessary, it operates at low power, is convenient to operate, and has an advantage of securing more advanced functions through an analysis program.

The test voltage recorder of the present invention having such an advantage is not limited to the above-described embodiment, and those skilled in the art can easily apply it to various application fields of the test voltage recorder.

Claims (5)

A key input unit including a plurality of function keys; Communication module for data communication with an external computer; A power supply unit for supplying driving power by transforming and rectifying a voltage input from the outside; A voltage detector connected to the power supply and configured to monitor an AC power applied thereto; A control unit for outputting a corresponding control signal according to a key input signal of the key input unit, transmitting and receiving set data, and controlling display of an operation state; An address decoder for buffering data exchange with the controller; A memory unit for outputting data stored as a control signal of a controller or storing input data through the address decoder; An LCD displaying visual data under control of a control unit through the address decoder; A tester detecting a voltage input from a test measurement terminal for test; And a voltage recorder for recording the voltage detected by the detector. The tester voltage recorder according to claim 1, wherein a computer connected to the communication module to receive test data of a memory unit is connected, and the computer includes an analysis program for analyzing the test data. The method of claim 1, wherein the key input unit A test switch for checking the test state while the test probe is in contact with the measuring part; Set position shift key to move time, RAM clear function and cursor direction of LCD window, Set value change key to select screen selection, ID number, confirmation function and numerical increase, YES / NO selection, And a setting confirmation key for setting a measurement time, an ID number, a recording start / end function, and a value adjusted by the setting position moving key and the setting value changing key. The tester voltage recorder according to claim 1, wherein the tester includes a light emitting diode for displaying the test state when the test switch is pressed. The tester voltage recorder according to claim 1, wherein the control unit includes a test light emitting diode capable of visually confirming the test record state. The tester voltage recorder according to claim 1, wherein the control unit includes a test light emitting diode capable of visually confirming the test record state.