KR102223026B1 - Digital melti-meter capable of multifarious measurement - Google Patents

Abstract

The present invention relates to a digital multimeter capable of measuring various types of electric values such as voltage, current, phase and frequency signals applied to electric and electronic products, as well as physical properties such as wire length and resistance, and more specifically If the operator replaces the probe part in contact with the measurement object according to the type of electric value to be measured and the type of electric and electronic products, the user can accurately measure the electric value of the measurement object desired by the user without any special manipulation of the multimeter. It relates to a digital multimeter capable of measurement, comprising: a collection stage that contacts a measurement object and receives an electrical signal; A connection end having a connection terminal arranged so that the electric signal transmitted from the collection terminal is energized and outputted through a channel path designated according to the type of measurement; a head made of and detachably coupled to the connection terminal, and according to the type of the head A connector having an adapter terminal configured to be connected to all of the connection terminals arranged differently from each other, and transmitting an identification signal for the adapter terminal receiving the electric signal; A check module for recognizing a type of electric signal received by the connector; A switch for switching the conduction channel of the electric signal according to a control signal; A digital multimeter (DMM) for measuring the electric signal received from the switch as an electric value corresponding to a corresponding current channel; And a controller configured to check the identification signal of the connector and the electrical type recognized by the check module, transmit a control signal to the switch, and receive and output the electrical value measured by the DMM.

Description

DIGITAL MELTI-METER CAPABLE OF MULTIFARIOUS MEASUREMENT}

The present invention relates to a digital multimeter capable of measuring various types of electric values such as voltage, current, phase and frequency signals applied to electric and electronic products, as well as physical properties such as wire length and resistance, and more specifically If the operator replaces the probe part in contact with the measurement object according to the type of electric value to be measured and the type of electric and electronic products, the user can accurately measure the electric value of the measurement object desired by the user without any special manipulation of the multimeter. It relates to a digital multimeter that can be measured.

In order to measure electrical values such as voltage, current, resistance, phase and frequency signals, as well as electrical products such as wires, batteries, plugs, and lamps, as well as electronic products such as computers, calculators, communication devices, and mobiles, voltmeters have been used since long ago. Various measuring devices such as ammeter, ohmmeter, and phase meter have been used. In particular, large structures such as buildings, automobiles, and ships equipped with complex electrical equipment require periodic electrical safety checks, and for electrical safety checks, distribution boards installed at points where electricity is normally distributed were checked. In this case, the operator used various kinds of measuring devices to measure the overall electrical values such as AC current, leakage current, effective leakage current, and live wire insulation resistance, and conducted a safety check.

However, carrying various types of measuring devices according to the type of measurement and electrical and electronic products to be measured (hereinafter referred to as'measurement target') drastically reduced the convenience of work and reduced work efficiency. In order to solve this problem, conventionally, a multimeter capable of measuring a variety of electric values according to DC and AC characteristics has been developed. In particular, a digital multimeter that digitally converts the measured electricity value and displays it as an accurate value has also been developed.

In order to measure the electrical value of the object to be measured, conventionally, the operator sets the measurement mode according to the electrical characteristics of the object to be measured by preferentially operating the function selection switch (eg, rotary switch) of a digital multimeter. The digital multimeter's probe was touched to the measuring point of the object to be measured to receive the applied electricity. Therefore, in the conventional digital multimeter, the operator had to be familiar with the information and range of the measurement object to be measured to some extent, and the measurement object could be measured only after the range was set according to the measurement range.

However, conventional digital multimeters had to switch and set the measurement mode and range each time the measurement object and the type of measurement electric value changed, so there was inconvenience in work, and due to incorrect application of electricity to the digital multimeter, the corresponding digital multimeter There was also the risk that the multimeter was damaged or even the measurement object itself was damaged, resulting in a problem.

In order to solve this problem, conventionally, a digital multimeter has been developed to perform measurement by automatically setting a measurement mode and a range according to the received electricity when receiving electricity without setting a separate measurement mode.

However, the control unit (CPU) configured in the conventional digital multimeter must be programmed with a complex process for automatically setting the measurement mode and range, and the digital multimeter IC (DMM) configured in the measurement unit has a relatively wide range. Since allowable specifications are required, the control unit and the DMM of the conventional digital multimeter are inevitably relatively expensive equipment, and a relatively large size is inevitable in order to accommodate the corresponding function.

As a result, conventional digital multimeters have a large size that is inconvenient to carry and have a large load and thus have a limit that is inevitable for generalization.

Prior Art Document 1. Patent Publication No. 10-2006-0060634 (published on June 5, 2006)

Accordingly, the present invention is invented to solve the above problems, and it is possible to measure various types of electric values such as voltage, current, phase and frequency signals applied to the measurement target, as well as physical properties such as wire length and resistance, If the operator replaces the probe part in contact with the measurement object according to the type of electric value to be measured and the type of electricity and electronic products, the operator can accurately measure the electric value of the measurement object desired by the user without any special manipulation of the multimeter. In order to solve the provision of digital multimeters capable of various measurements capable of miniaturization and low-cost manufacturing of devices, it is possible to minimize the range specification of the DMM and do not need to manually adjust the measurement mode and range, and do not require complicated processing settings on the CPU. It is a task to do.

In order to achieve the above object, the present invention,

A collecting end contacting the measurement target and receiving an electrical signal; A connection terminal having a connection terminal arranged to output and energize the electric signal transmitted from the collection terminal through a channel path designated according to the type of measurement; a head consisting of, and

A connector that is detachably coupled to the connection end, has an adapter terminal configured to be connected to all of the connection terminals arranged differently according to the type of the head, and transmits an identification signal to the adapter terminal from which the electrical signal is received; and ; A check module for recognizing a type of electric signal received by the connector; A switch for switching the conduction channel of the electric signal according to a control signal; A digital multimeter (DMM) that measures the electrical signal received from the switch as an electrical value corresponding to a corresponding current channel; A probe consisting of; a controller that checks the identification signal of the connector and the electric type recognized by the check module, transmits a control signal to the switch, and receives and outputs the electric value measured by the DMM.

It is a digital multimeter capable of a variety of measurements including.

The present invention described above can measure various types of electric values such as voltage, current, phase, and frequency signals applied to a measurement target, as well as physical properties such as wire length and resistance, and the type of electric value to be measured and electricity. According to the type of electronic product, if the operator replaces the head, which is the probe part in contact with the measurement object, the user can accurately measure the electric value of the measurement object desired by the user without any special manipulation of the multimeter. There is no need to adjust, complicated processing settings on the CPU are not required, and the range specification of the DMM can be minimized, thus making it possible to reduce the size of the device and manufacture at a low cost.

1 is an image showing an embodiment of a multimeter according to the present invention,
2 is a block diagram showing an embodiment of a multimeter according to the present invention,
3 is a view showing an assembly state between a head and a probe in an embodiment of a multimeter according to the present invention,
4 is an image showing an assembly state between a head and a probe of another embodiment of a multimeter according to the present invention,
5 is a view showing an assembly state between the head of the multimeter and the probe shown in FIG. 4,
6 is an image showing a state in which the multimeters according to the present invention are arranged side by side,
7 is an image showing the appearance of the head of the multimeter according to the present invention,
8 is a view showing a connection surface between the multimeter and the head,
9 is a view showing a plan view of the multimeter and the head shown in FIG. 8,
10 is a diagram showing a state of use of a multimeter according to the present invention,
11 is a diagram showing a state in which the measurement result of the multimeter according to the present invention is output to the mobile,
12 is a block diagram showing another embodiment of a multimeter according to the present invention,
13 is a diagram showing a state of use of the multimeter shown in FIG. 12,
14 is a block diagram showing another embodiment of a multimeter according to the present invention,
15 is a view showing a connection surface between the multimeter and the head of FIG. 14,
16 is a view showing a plan view of the multimeter and the head shown in FIG. 15,
17 is a view showing a state of use of the multimeter shown in FIG. 14,
18 is a diagram illustrating a state in which the measurement result of the multimeter shown in FIG. 14 is output to a mobile device.

The features and effects of the present invention described above will become apparent through the following detailed description in connection with the accompanying drawings, whereby those of ordinary skill in the technical field to which the present invention pertains can easily implement the technical idea of the present invention. There will be. Since the present invention can make various changes and have various forms, specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific form of disclosure, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention. The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention.

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

FIG. 1 is an image showing an embodiment of a multimeter according to the present invention, FIG. 2 is a block diagram showing an embodiment of a multimeter according to the present invention, and FIG. 3 is an embodiment of a multimeter according to the present invention. Figure 4 is a diagram showing an assembly state between the head of the multimeter and the probe, and Figure 4 is an image showing an assembly state between the head and the probe of another embodiment of the multimeter according to the present invention, and Figure 5 is a multimeter head and probe shown in Figure 4 It is a diagram showing an assembly state of the liver, FIG. 6 is an image showing a state in which the multimeters according to the present invention are arranged parallel to each other, and FIG. 7 is an image showing the appearance of the head of the multimeter according to the present invention.

The head 100 of the multimeter (MM) according to the present embodiment includes: a collection stage 110 that contacts a measurement object and receives an electrical signal; And a connection terminal 120 having a connection terminal 121 (see FIG. 8) arranged so that the electric signal transmitted from the collection terminal 110 is energized and outputted through a channel path designated according to the measurement type.

In addition, the probe 200 of the multimeter (MM) according to the present embodiment is configured to be detachably coupled to the connection terminal 120 and to be connected to all of the connection terminals 121 arranged differently according to the head 100. A connector 210 having an adapter terminal 211 (see FIG. 8) and transmitting an identification signal to the adapter terminal 211 from which the electrical signal is received; A check module 220 for recognizing the type of electric signal received by the connector 210; A switch 240 for switching a current channel of the electric signal according to a control signal; A DMM 250 for measuring a corresponding electric value of the electric signal received through the electric channel of the switch 240; A controller 230 that checks the identification signal of the connector 210 and the recognition content of the check module 220, transmits a control signal to the switch 240, and receives and outputs the electrical value measured by the DMM 250; It is composed.

When describing the head 100 in more detail, the head 100 includes a housing 101 for accommodating the collecting end 110 and the connection end 120. The housing 101 is made detachably from the probe 200, and for this purpose, a coupling means 102 is formed at the end of the housing 101. The coupling means 102 of the present embodiment has a protrusion shape and is mechanically inserted into and coupled to the groove-shaped coupling means 202 (see FIG. 8) formed in the housing 201 of the probe 200.

In addition, the housing 101 of the head 100 according to the present embodiment has a collection stage 110, and the collection stage 110 forms a tower needle shape. The probe-shaped collection end 110 contacts the wire or terminal of the measurement target or is inserted into the hole of the outlet to contact the inner terminal or the like.

In addition, as shown in FIG. 4, the collecting terminal 110 of the present embodiment has a port shape through which the gender-in cords C1 and C2 of the cable C to be measured (see FIG. 17) are detachably connected. Accordingly, the multimeter MM of the present embodiment can measure the resistance and length of the cable C on which the cords C1 and C2 are formed. Details about this will be described again below. For reference, there are two types of ports illustrated in FIG. 4, one is a cord-only port connected to an RJ-45 type LAN cable, and the other is a USB cord-only port. The illustrated port is only one of many types of code-only ports, and various types of code-only ports may be applied.

The collecting stage 110 configured in the head 100 according to the present embodiment may be of a probe type and a port type, but may be various types such as clamp type and ring type, and any structure and type capable of collecting electrical signals while in contact with other measurement objects. In addition, it can be varied.

Meanwhile, the probe 200 according to the present embodiment further includes a connector 210, a check module 220, a controller 230, a switch 240, and a housing 201 accommodating the DMM 250. The housing 201 is formed with a coupling means 202 corresponding to the coupling means 102 of the head 100.

In addition, the probe 200 of the present embodiment is composed of a first probe (MM1) and a second probe (MM2) electrically connected to each other, and the first probe (MM1) and the second probe (MM2) are arranged side by side with each other. Stoppers 204 and 204' engaged to be engaged are formed in the housing 201 of the first probe MM1 and the housing 201' of the second probe MM2, respectively. In the case of the first probe (MM1), the stoppers (204, 204') of this embodiment are formed between a pair of protrusions (a, a') protruding side by side and spaced apart from each other, and a pair of protrusions (a, a'). Consists of a groove (b), and in the case of the second probe (MM2), a pair of protrusions (a, a') are inserted and engaged with the grooves (c, c'), and the grooves (b) are inserted and engaged. It consists of a protrusion (d). As a result, the first probe (MM1) and the second probe (MM2) are connected in parallel with each other without twisting or shifting through the stoppers (204, 204') as shown in FIG. 6 to measure the electrical value of the measurement target of the outlet structure. I can. For reference, since the outlet constitutes a pair of holes as well-known, the first probe (MM1) and the second probe (MM2) meshed with each other through the stoppers (204, 204') are each head 100 ), a probe-shaped collection end 110 is inserted into the hole like a general plug.

On the other hand, the collection stage 110 of the present embodiment is eccentrically arranged to one side from the end surface of the housing 101 of the head 100, as shown in Figure 7, and flashes by receiving the power applied from the probe 200 (104). ) Is disposed eccentrically on the other side of the end surface. The light 104 is configured in parallel with the collection stage 110 for the purpose of illuminating the measurement object in a relatively dark location, and blinks under the control of the user. Power for lighting the lamp 104 is supplied from the battery 270 of the probe 200, and by placing the lighting switch S between the lamp 104 and the battery 270, the user flashes the lamp 104 Can be controlled.

For reference, the first probe (MM1) and the second probe (MM2) are electrically connected to each other, and the connector 210, the check module 220, the switch 240, the DMM 250, and the controller 230 are respectively Each is configured in at least one selected from among the first probe MM1 and the second probe MM2. That is, the connector 210, the check module 220, the switch 240, the DMM 250, and the controller 230 are configured in the first probe (MM1) or the second probe (MM2), or the first probe ( It is configured by dividing into MM1) and the second probe (MM2), or one or more of the first probe (MM1) and the second probe (MM2) are configured in common.

As a result, the first and second probes (MM1, MM2) are electrically connected to each other through the wire (L), and the first and second probes (MM1, MM2) connected in this way are the electrical signals received through each head (100). While energizing each other, the electricity value of the corresponding measurement object can be measured.

FIG. 8 is a view showing a connection surface between the multimeter and the head, and FIG. 9 is a view showing a plan view of the multimeter and the head shown in FIG. 8.

The connection terminal 120 of the present embodiment is provided with a connection terminal 121 (refer to FIG. 8) for energizing and outputting the electric signal transmitted from the collection terminal 110 along channels that are uniquely arranged for identification.

The connection terminal 120 is configured for electrical connection with the probe 200, and at least one connection terminal 121 is disposed at a specific position according to the type of electric value measured by the head 100 and the type of measurement. That is, the probe 200 may have a different structure and shape depending on whether it is for measuring resistance, measuring current, measuring voltage, measuring cable length, or the like. After all, the multimeter (MM) according to the present invention can perform measurement tasks without the need for the user to manually set measurement conditions for measurement, and for this purpose, instead of manually setting the measurement conditions to the multimeter (MM), The head 100 is mounted on the probe 200 so that the multimeter (MM) sets its own execution condition.

To this end, in the head 100 of the multimeter (MM) of the present embodiment, one or more connection terminals 121 are arranged and arranged at a specific position according to the type of measurement. Therefore, the number and placement of the connection terminals 121 of the connection terminal 120 configured in the head 100 as shown in (b) and (c) of FIG. 9 vary according to the type of measurement of the head 100. Do.

On the other hand, since the adapter terminal 211 configured on the connector 210 of the probe 200 must be able to connect to the connection terminals 121 of all arrangement structures regardless of the type of the head 100, Fig. 9(a) As described above, the adapter terminal 211 of the connector 210 is configured at all positions in which the connection terminal 121 configured on the connection terminal 120 of the head 100 can be disposed. Accordingly, the connector 210 transmits an identification signal of the adapter terminal 211 to which the electric signal has been received, so that the currently mounted head 100 can identify which electric value is to be measured.

The connector 210 recognizes the adapter terminal 211 to which the connection end 120 of the head 100 is connected, regardless of the type of the head 100, and transmits a corresponding identification signal.

Eventually, the head 100 receiving the electrical signal of the measurement target is energized through its own connection terminal 121 to the adapter terminal 211 of the channel path to which the electrical signal is designated, and the connector 210 is the corresponding adapter terminal 211 And transmits an identification signal to the controller 230 for identification.

On the other hand, the connection terminal 120 and the connector 210 are mutually detachable, so that the connection terminal 121 and the adapter terminal 211 connected to each other are not separated.

On the other hand, as shown in Figure 8, the head 100 is formed so that the coupling means 102 inserted into the coupling means 202 of the probe 200 protrudes from the end of the housing 101 of the head 100, and the head 100 ) And the probe 200, the coupling bodies 103, 105, 203, and 205, which are engaged to be inserted so that the coupling state is stably maintained, are respectively configured. In this embodiment, the coupling bodies 103 and 203 have a tubular shape surrounding the connection end 120 and the connector 210 in the head 100 and the probe 200, respectively, and another coupling body 105 and 205 is the head 100 And a tubular shape disposed at the cross-sectional corners of the probe 200, but in addition to the structure capable of stably maintaining the coupled state of the head 100 and the probe 200, it is varied within the scope of the following rights. It can be modified to be implemented.

FIG. 10 is a view showing a state of use of a multimeter according to the present invention, and FIG. 11 is a view showing a state of outputting a measurement result of the multimeter according to the present invention to a mobile.

The check module 220 of the present embodiment recognizes the type of electric signal received by the connector 210. The electric signal received from the head 100 may be an alternating current type, but may be a direct current type. This is the type of electricity you must know for measurement. Therefore, the check module 220 analyzes the frequency of the electric signal received by the connector 210 and checks whether the corresponding electric signal is AC or DC.

In this embodiment, the measurement target is a battery B, and the collection terminals 110 each configured in a pair of multimeters MM contact the electrode terminals of the battery B. For reference, the first probe MM1 and the second probe MM2 are connected to be energized through an electric wire L.

The collection terminal 110 of a pair of multimeters (MM) transmits the received electrical signal to the connector 210 through the connection terminal 120, and the connector 210 transmits an identification signal for the received electrical signal. And, the check module 220 confirms that the type of the electric signal received by the connector 210 is direct current.

On the other hand, the controller 230 according to the present embodiment checks the identification signal of the connector 210 and the recognition content of the check module 220 and transmits a control signal for switching control of the switch 240. To explain this in more detail, the controller 230 checks the identification signal to determine which measurement the electrical signal received through the head 100 is for, and adds the electrical type recognized by the check module 220. Check with, and finally check what electricity value you want to measure according to the setting process. After the confirmation, the controller 230 transmits a control signal for switching control.

The switch 240 switches the energization channel of the electric signal according to the control signal. The conduction channel consists of one or more paths depending on the type of measurement of the electric signal. Therefore, according to the control signal, the switch 240 switches so that the electric signal is energized through the corresponding path, and the electric signal is applied to the MMS 250 through the path.

The DMM 250 measures the corresponding electric value of the electric signal received through the energization channel of the switch 240. The DMM 250 measures the electrical value of the electrical signal in a manner corresponding to the energization channel received through the switch 240. For example, if the electrical signal is for voltage measurement, the DMM 250 measures the voltage of the electrical signal. Measure Since the measurement target in this embodiment is a battery (B), the controller 230 transmits the corresponding control signal to the switch 240, and the switch 240 switches to a current channel for voltage measurement, so that the DMM 250 corresponds to it. Lets you measure the voltage based on the electric signal.

Subsequently, the DMM 250 transmits the measured electrical value to the controller 230, and the controller 230 receives and outputs the electrical value measured by the DMM 250. To this end, the probe 200 of the multimeter (MM) according to the present embodiment further includes a communication module 260 of a wireless or wired communication function to enable data communication with an external terminal (DM). Accordingly, the controller 230 transmits the electric value received from the DMM 250 as data through the communication module 260, and the external terminal DM transmits the text on the electric value through the screen 11 as shown in FIG. Control to output (12). To this end, the external terminal (DM) is installed with a dedicated app to perform data communication with the multimeter (MM), and the user carries the external mobile (DM) and executes the app installed in the external terminal (DM) during measurement work. . When the app is executed, the multimeter (MM) and the external terminal (DM) communicate with each other in a wired or wireless manner. In general, wireless communication is performed through Bluetooth or Wi-Fi communication, and data communication may be performed through various communication means.

For reference, it may be a smartphone, a laptop, or a template capable of processing external terminal (DM) data.

In addition, the voltage or current can be measured by a multimeter (MM) through a general analog measurement method, and when one of the voltage and current is measured, the controller 230 is the self-resistance and voltage of the multimeter (MM). Or calculate the current and measure the remaining one.

Meanwhile, the communication module 260 receives data from the external terminal DM and transmits it to the controller 230, and the controller 230 processes the received data. The controller 230 and the DMM 250 may analyze an electrical signal and calculate an electrical value according to a process they have, but if necessary, a processing function of the external terminal DM may be required. Therefore, when the controller 230 transmits the verified electricity value as data through the communication module 260, the external terminal DM calculates the electricity value through the setting app, and transmits the result to the multimeter (MM). , As shown in FIG. 11, the external terminal DM may output a result value by itself.

FIG. 12 is a block diagram showing another embodiment of the multimeter according to the present invention, and FIG. 13 is a diagram showing the use of the multimeter shown in FIG. 12.

The probe MM' according to the present embodiment further includes a screen 280 for outputting the electrical value processed by the controller 230 to at least one selected from text, image, and graph.

The screen 280 is disposed on the probe MM1 as shown in FIG. 13, and the electric value checked by the controller 230 is output. Accordingly, without interlocking with the external terminal (DM), the electric value can be output to the user and displayed to the user, and the user can check the electric value of the measurement target by viewing the contents output on the screen 280.

14 is a block diagram showing another embodiment of the multimeter according to the present invention, FIG. 15 is a diagram showing a connection surface between the multimeter of FIG. 14 and a head, and FIG. 16 is a multimeter shown in FIG. 15 Fig. 17 is a view showing the use of the multimeter shown in Fig. 14, and Fig. 18 is a view showing a state in which the measurement result of the multimeter shown in Fig. 14 is output to a mobile device. It is a drawing shown.

The head 100 according to the present embodiment further includes a conducting terminal 130 that receives power and applies it to the collection terminal 110, and the collection terminal 110 is a port through which the codes C1 and C2 are detachably connected. Is; The probe 200 is electrically connected to the battery 270 for driving the probe 200, opens and closes the power of the battery 270 under the control of the controller 230, and is detachable from the conducting terminal 130. It further includes a power terminal 290;

The multimeter (MM" of the present embodiment) can measure the length of a measurement object, such as a cable C, based on the measurement of resistance as well as general voltage and current. To this end, the multimeter (MM") measures the resistance of the measurement object. Supply power for measurement.

In this embodiment, the probe 200 constitutes a battery 270 for supplying power, and further includes a power terminal 290 for controlling power opening and closing of the battery 270. The power terminal 290 is disposed at the end of the housing 101 in which the head 100 is detached.

In response to this, the head 100 of the present embodiment further includes a power supply terminal 130 that is detachably and electrically connected to the power terminal 290. The energization terminal 130 is electrically connected to the collection terminal 110 so that the current applied from the power terminal 290 is energized to the collection terminal 110. As a result, the collecting terminal 110 applies a current to a measurement object for measuring resistance, receives the electrical signal generated in this way, and transmits it to the probe 200 through the connection terminal 120.

In the probe 200, the DMM 250 calculates a corresponding electric value according to the above-described process, and the controller 230 sets a resistance standard, which is the calculated electric value, and a resistance standard per length for each copper conductor or various cable types to be measured. Confirm. As a result, the controller 230 calculates the length according to the type of the measurement target based on the checked resistance standard and outputs it through the external terminal (DM) or its own screen 280 as shown in FIG. 18. Briefly describing the output result of FIG. 18, the controller 230 controls the battery 270 to apply voltage and current, respectively, to check the resistance of the cable C. On the other hand, the setting standard for the type and resistance of the cable (C) is directly input by the user or is automatically input according to the type of the head (100), and the measurement length of the cable (C) to be measured can be measured through the result. have.

For reference, information on the resistance standard per length according to the type of copper wire or various cables is stored in the controller 230 or the external terminal (DM) or another server of the network. Therefore, if the corresponding standard information is not stored in the controller 230, the controller 230 can check the electricity value by using the standard information stored in the external terminal DM while communicating with the external terminal DM. In addition, if the corresponding standard information is not stored in the external terminal DM, the external terminal DM may access another server through a network to search for and calculate the corresponding standard information to check the electricity value.

In this embodiment, the measurement target is an RJ45 type LAN cable, and the collecting end 110 of the head 100 is in a port type, so that the cords C1 and C2 of the corresponding LAN cable are connected to the port type collecting end of the head 100 ( 110) to contact the measurement target.

In the detailed description of the present invention described above, the present invention has been described with reference to preferred embodiments of the present invention, but those skilled in the art or those of ordinary skill in the relevant technical field have the spirit of the present invention described in the claims to be described later. And it will be understood that various modifications and changes can be made to the present invention within a range not departing from the technical field.

100; Head 101; Housing 102; Means of coupling
103; Conjugate 104; Light 105; concrete
110; Collector 120; Connection end 130; Energizing terminal
200; Probe 201; Housings 202, 203, 205; concrete
210; Connector 220; Check module 230; controller
240; Switch 250; DMM 260; Communication module
270; Battery 280; Screen 290; Power terminal
B; Battery C; Cables C1, C2; code
DM; External terminal L; Wire MM, MM', MM"; multimeter

Claims (8)

A collecting end contacting the measurement target and receiving an electrical signal; A connection terminal having a connection terminal arranged to be output by energizing the electric signal transmitted from the collecting terminal through a channel path designated according to the type of measurement; a head consisting of, and
A connector that is detachably coupled to the connection terminal, has an adapter terminal configured to be connected to all of the connection terminals arranged differently according to the type of the head, and transmits an identification signal to the adapter terminal from which the electrical signal is received; and ; A check module for recognizing a type of electric signal received by the connector; A switch for switching the conduction channel of the electric signal according to a control signal; A digital multimeter (DMM) for measuring the electric signal received from the switch as an electric value corresponding to a corresponding current channel; Including a probe consisting of; a controller configured to check the identification signal of the connector and the electric type recognized by the check module, respectively, to transmit a control signal to the switch, and to receive and output the electric value measured by the DMM,
The head further includes a current-carrying terminal for receiving electric power and applying it to the collecting terminal, wherein the collecting terminal is a port through which a cord is detachably connected;
The probe further comprises a power terminal that is detachable from the conduction terminal and opens and closes power with the conduction terminal according to the control of the controller. The method of claim 1,
The probe further includes a communication module having a wireless or wired communication function to enable data communication with an external terminal;
The controller transmits data on the electric value using a communication module, and processes and outputs the data received from the external terminal;
A digital multimeter capable of measuring various types of measurements. The method of claim 1,
The probe is composed of a first probe and a second probe electrically connected to each other, wherein the connector, the check module, the switch, the DMM, and the controller are configured in at least one selected from a first probe and a second probe, respectively;
A digital multimeter capable of measuring various types of measurements. The method of claim 1,
The probe further comprises a screen for outputting the electric value processed by the controller as at least one selected from text, image, and graph;
A digital multimeter capable of measuring various types of measurements. delete The method of claim 1,
The probe is composed of a first probe and a second probe that are electrically connected to each other, and a stopper that engages so that the first probe and the second probe are aligned and coupled to each other is disposed in the housing of the first probe and the housing of the second probe. Each formed;
A digital multimeter capable of measuring various types of measurements. delete The method of claim 1,
The collecting end is arranged eccentrically from an end surface of the head to one side, and a lamp configured to flash on the other side of the end surface by receiving electric power applied from a probe;
A digital multimeter capable of measuring various types of measurements.

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