CN102788919B - Wire detecting device and wire detecting method - Google Patents

Abstract

The invention provides a wire detection device and a wire detection method. The wire detection device includes a plurality of selection keys, a first test terminal, a second test terminal, a processor, a key circuit and a signal acquisition circuit. The first test end includes a plurality of first end connection parts. Each first end connecting portion is respectively used for connecting to the first end of the wire. The second test end is used for connecting the second end of the wire. The button circuit scans according to a plurality of button scanning functions to judge the selected button that is touched, and selects the corresponding button scanning function. The signal acquisition circuit selects the corresponding data acquisition function according to the corresponding button scanning function, and collects the wire data to generate the test result. Compared with the prior art, the invention can greatly reduce the detection time, and the test result is intuitively visible. In addition, the second test end of the wire testing device replaces the previous manual wire insertion method with a mechanism insertion method, so a single tester can easily perform the inspection procedure of the wire to be tested.

Description

Wire detection device and wire detection method

technical field

The invention relates to a wire detection device and a wire detection method.

Background technique

Generally speaking, when a signal line transmits a signal, since the signal transmitting end and the receiving end do not have the same potential, there will be a potential difference between the devices at both ends to form noise voltage. The noise voltage will be squeezed out of the insulating layer of the signal line, and directly penetrate the outer side of the insulating layer, and cause electromagnetic mutual inductance interference with the signals of the surrounding circuits. In this way, the transmission signal quality of the overall line will be affected, which is the so-called Electromagnetic Interference (EMI). Therefore, how to eliminate electromagnetic interference has become a necessary issue for current signal lines to maintain transmission quality.

In order to reduce the electromagnetic interference of equipment, a method generally adopted at present is to use a differential transmission mode. Among them, the low-voltage differential signaling (LVDS) transmission method has the advantage of low power supply voltage requirements, so it can generate relatively faster and more stable signals. According to the LVDS interface standard defined by ANSI-YUA-EIA-644-I995, for the signal line used in the application of LVDS signal transmission system, the signal line with characteristic impedance (Z0) of 100Ω±5% must be used to interface with the liquid crystal display and The circuit impedance (Z) of the interface on the system motherboard is matched to reduce electromagnetic interference and reduce noise interference. Otherwise, the signal transmission between the LCD interface and the system motherboard interface will produce signal reflection and noise interference, as well as signal loss, deformation and distortion.

In addition, when managing LVDS wires, in order to separate qualified and unqualified LVDS wires, the usual practice is to judge the quality of LVDS wires based on the integrity of the appearance of LVDS wires, but the fact proves that the appearance does not seem to be a problem LVDS wire is a qualified product that can be used normally. Therefore, if you want to ensure that the LVDS wire is qualified, you must use a specific test machine and look at the detection screen through the panel. However, it is often necessary to pass many detection screens before confirming whether the LVDS wire is qualified, which is time-consuming, laborious and expensive. costly approach.

Contents of the invention

In order to solve the problems of the prior art, a technical aspect of the present invention is a wire detection device, the second test end of which can be connected to one end of the wire to be tested, and the first test end includes a plurality of first ends One of the connecting parts can be selectively connected to the other end of the wire to be tested, so that the functions of multi-channel switching and channel-by-channel collection of the voltage of the wire to be tested can be achieved. Next, the wire detection device of the present invention selects the corresponding data acquisition function by pressing the selection button, and the processor collects corresponding data according to one end of the wire to be tested at the first test end, and performs data processing with the other end of the wire to be tested at the second test end. Compare and generate test results. The result of the wire pin (pin) to be tested can also be displayed through the corresponding key. Therefore, compared with the existing wire rod testing machine which measures many screens and manually analyzes to know whether the wire rod to be tested is qualified, the wire rod detection device of the present invention can greatly reduce the detection time, and the test results are intuitively visible. In addition, the second test end of the wire testing device replaces the previous manual wire insertion method with a mechanism insertion method, so a single tester can easily perform the inspection procedure of the wire to be tested.

A wire detection device according to an embodiment of the present invention is used for testing a plurality of wires. The wire detection device selectively electrically connects one of the wires. The wire detection device includes a plurality of selection keys, a first test terminal, a second test terminal, a signal acquisition circuit, a key circuit and a processor. Each selection button corresponds to one of the wires. The first test end includes a plurality of first end connection parts. Each first end connecting portion is respectively used for correspondingly connecting to the first end of one of the wires. The second test end is used for connecting the second end of one of the wires. The button circuit is electrically connected to the selection buttons, and is used for selecting one of the corresponding button scanning functions according to actuation of one of the selection buttons. The signal acquisition circuit is used for selecting one of the corresponding data acquisition functions according to one of the key scanning functions. The processor is electrically connected to the key circuit for scanning according to the key scanning function to determine the selected key that is touched, and is electrically connected to the signal acquisition circuit for collecting data on the electrically connected wires according to one of the data acquisition functions, and then Generate test results.

In an embodiment of the present invention, the above-mentioned second test end includes a second end connection portion and a limiting member. The second end connection part is arranged on the wire detection device and can slide relative to the wire detection device along the first direction. The limiting member is used for pluggably fixing the second end of one of the wires. The second end connection part can move toward the limiting part along the first direction, so that the second end is electrically connected with the second end connection part.

The wire detection method according to an embodiment of the present invention uses a wire detection device to test various types of wires. The wire detection device includes a plurality of selection keys and a display unit. Each selection button corresponds to one of the wires. The wire detection method comprises the following steps: (a) electrically connecting the wire to the wire detection device; (b) scanning a selection button according to a plurality of button scanning functions, and then obtaining a scanning result; (c) judging the corresponding electrical connection of the wire according to the scanning result Whether the selection button is touched, if yes, execute the following step (d), if not, execute step (b), wherein each button scanning function corresponds to one of the selection buttons; (d) according to the corresponding selection button that is touched The data acquisition function performs data acquisition on the electrically connected wires, and then generates test results; and (e) displays the test results on the display unit.

Description of drawings

Readers will have a clearer understanding of various aspects of the present invention after reading the detailed description of the present invention with reference to the accompanying drawings. in,

FIG. 1 is a perspective view of a wire detecting device according to an embodiment of the present invention.

FIG. 2 is a functional block diagram of the wire detecting device in FIG. 1 .

FIG. 3A is a partial top view of the wire detection device in FIG. 1 , wherein the second end connecting portion has not yet moved toward the limiting member.

FIG. 3B is a partial top view of the wire detecting device in FIG. 1 , wherein the second end connecting portion has been in contact with the limiting member.

FIG. 4 is a flow chart showing the steps of a wire detection method according to an embodiment of the present invention.

[Description of main component symbols]

1: Wire detection device

1a: Housing

1b: Second track

10: Select button

12: The first test terminal

120: first end connection part

120a: Plug board

120a1: Pin

14: The second test terminal

140: second end connection part

140a: Plug board

140a1: Pin

142: limit piece

144: Rack

146: Actuator

146a: gear

146b: handle

148: clamp

150: clamp arm

150a: first clamping part

150b: Guide Department

150c: second clamping part

16: Processor

160: Button circuit

162: Signal acquisition circuit

18: Display unit

2: wire

2a: First end

2b: Second end

A1: First direction

A2: Second direction

S100～S108: steps

Detailed ways

A number of embodiments of the present invention will be disclosed in the following figures. For the sake of clarity, many practical details will be described together in the following description. It should be understood, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the present invention, these practical details are unnecessary. In addition, for the sake of simplifying the drawings, some commonly used structures and components will be shown in a simple and schematic manner in the drawings.

A technical aspect of the present invention is a wire detection device. More specifically, its second test end can be connected to one end of the wire to be tested, and one of the plurality of first end connection parts included in the first test end can be selectively connected to the other end of the wire to be tested. , so it can achieve the function of multi-channel switching and collecting the voltage of the wire to be tested in different channels. Then, the wire detection device selects the corresponding data acquisition function through the selection button, and the processor collects corresponding data according to one end of the wire to be tested at the first test end, and compares the data with the other end of the wire to be tested at the second test end , and then generate test results, and display the test results on the display unit. In addition, the second test end of the wire testing device replaces the previous manual wire insertion method with a mechanism insertion method, so a single tester can easily perform the inspection procedure of the wire to be tested.

Please refer to Figure 1. FIG. 1 shows a perspective view of a wire detection device 1 according to an embodiment of the present invention.

As shown in FIG. 1 , in this embodiment, the wire detection device 1 can be used to test various types of wires 2 (only one wire 2 is shown in FIG. 1 ), and the wires 2 include multiple pins (pins). The first end 2a and the second end 2b. The wire detection device 1 can be selectively electrically connected to one of the wires 2 . For example, the model of the wire 2 can be LI-10, LI-16, LI-17, LI-20, LT-15B, etc., but the present invention is not limited thereto. The wire testing device 1 of the present invention includes a plurality of selection buttons 10 , a first testing terminal 12 and a second testing terminal 14 . Each selection button 10 of the wire detecting device 1 corresponds to one of the wires 2 . The first testing end 12 of the wire detection device 1 includes a plurality of first end connecting portions 120 . Each first end connection portion 120 of the first test end 12 is respectively used for correspondingly connecting to the first end 2 a of the wire 2 . The second testing end 14 of the wire testing device 1 is used for connecting the second end 2 b of the wire 2 . Further, the first terminal connection portion 120 of the first test terminal 12 includes a plug board 120a, and the plug board 120a has a plurality of pins 120a1. The first end 2a of the wire 2 has a slot (not shown in the figure), and a plurality of pins (not shown in the figure) are provided in the slot. The pins in the slot are electrically connected with the wire 2 . After the plug board 120a of the first end connection part 120 is inserted into the slot of the first end 2a, and the pins 120a1 of the plug board 120a are electrically connected with the pins in the slot, the first end 2a of the wire 2 can be connected to the slot. The purpose of the first terminal connection part 120 is electrical connection. However, the manner of electrically connecting the first end 2a of the wire 2 to the first end connection portion 120 is not limited to this embodiment.

In other words, when one type of wire 2 is to be connected to the wire detection device 1 of the present invention, the first end 2a of the wire 2 can be connected to the first test end 12 corresponding to the first end of the type. The end connection part 120, and the second end 2b of the wire 2 is connected to the second test end 14, so that the wire 2 can be completely connected to the wire detection device 1 of the present invention.

The first test end 12 shown in FIG. 1 only includes four first end connection portions 120 , but the present invention is not limited thereto, and can be flexibly increased or decreased according to the number of types of wires to be tested.

Please refer to Figure 2. FIG. 2 is a functional block diagram of the wire detecting device 1 in FIG. 1 .

As shown in FIG. 2 , in this embodiment, the wire detection device 1 further includes a processor 16 , a button circuit 160 , a signal acquisition circuit 162 and a display unit 18 . The processor 16 is electrically connected to the button circuit 160 , and the button circuit 160 is electrically connected to the selection button 10 , and the processor scans the button circuit through a plurality of button scanning functions. Each key scan function corresponds to one of the selection keys 10 . The processor 16 performs signal data acquisition through a plurality of data acquisition functions via the signal acquisition circuit 162 . The data collection function corresponds to one of the selection buttons 10 . When the first end 2a and the second end 2b of the wire 2 are electrically connected to the wire detection device 1, and the selection button 10 corresponding to the electrically connected wire 2 is touched, the processor 16 of the wire detection device 1 will pass through the button circuit 160 Scanning is performed according to the key scanning function to determine the selected key 10 that is touched. Moreover, the processor 16 of the wire detection device 1 collects data from the electrically connected wire 2 via the signal collection circuit 162 according to the data collection function corresponding to the selected selection button 10 to generate a test result.

In other words, when one type of wire 2 is to be tested, the first end 2a and the second end 2b of the wire 2 can be respectively connected to the first test end 12 and the second test end 14 of the wire detection device 1 Afterwards, first touch the selection button 10 corresponding to the wire 2 . The processor 16 of the wire detection device 1 will scan all the selection buttons 10 according to the button scanning function at any time through the button circuit 160, so when the button circuit 160 scans the button scanning function corresponding to the selection button 10 to obtain a match, then Determine the selection button 10 (that is, the wire detection device 1 can determine what the selected selection button 10 is touched), if the wire 2 does not match the selected selection button 10, then select the selection button 10 again until it matches. Next, the processor 16 of the wire detection device 1 collects data on the wire 2 through the signal collection circuit 162 according to the data collection function corresponding to the touched selection button 10 , and then generates a test result. The data acquisition function includes all the items that need to be detected on the wire 2, so when the processor 16 collects data on the wire 2 through the signal acquisition circuit 162, it will display the data and results of all the detected items on the wire 2 to the display unit 18 in the picture above. Therefore, compared with the previous method of measuring many screens through the existing wire testing machine and man-made analysis to know whether the wire to be tested is qualified or not, the wire testing device 1 of the present invention can directly display the test results through the display unit 18. As a result, the detection time is drastically reduced and the false positive rate is reduced.

For example, when using existing testing machines to test wires, it is necessary to manually watch many screens and observe the test results displayed on the screens, so it takes one to two minutes to test a single wire. In contrast, after the wire detection device 1 of the present invention touches the selection button 10 corresponding to the wire 2, the signal acquisition circuit 162 collects data on the wire 2 and displays the detected wire type and result on the display unit 18. Therefore, it only takes about a few seconds to detect a wire 2, and human-made analysis factors are excluded to reduce the probability of misjudgment, and the obtained measurement results are more accurate.

Please refer to FIG. 3A and FIG. 3B . FIG. 3A shows a partial top view of the wire detecting device 1 in FIG. 1 , where the second end connecting portion 140 has not moved toward the limiting member 142 . FIG. 3B is a partial top view of the wire detection device 1 in FIG. 1 , where the second end connecting portion 140 has been in contact with the limiting member 142 .

As shown in FIG. 1 , FIG. 3A and FIG. 3B , in this embodiment, the second testing end 14 of the wire detection device 1 includes a second end connecting portion 140 and a limiting member 142 . The second end connection portion 140 of the second testing end 14 is disposed on the wire detection device 1 and can slide relative to the wire detection device 1 along the first direction A1. The limiting member 142 of the second testing end 14 is used to detachably fix the second end 2 b of the wire 2 . The second connecting portion 140 of the second testing end 14 can move toward the stopper 142 along the first direction A1 , so that the second end 2 b of the wire 2 is electrically connected to the second connecting portion 140 . Further, the second terminal connection portion 140 of the second test terminal 14 includes a plug board 140a, and the plug board 140a has a plurality of pins 140a1. The stopper 142 of the second test end 14 has a slot (not shown, located on the other side of the stopper 142 in FIG. 1 relative to the second end 2b of the wire 2), and there are multiple pins in the slot ( not shown). The pins in the slot are electrically connected to the second end 2 b of the wire 2 . When the second end connection part 140 of the second test end 14 moves toward the limiter 142 along the first direction A1, the plug board 140a of the second end connection part 140 is inserted into the slot of the limiter 142, and the plug board 140a The pins 140a1 are electrically connected to the pins in the socket, so as to achieve the purpose of electrically connecting the second end 2b of the wire 2 to the second end connection portion 140 . However, the manner of electrically connecting the second end 2 b of the wire 2 to the second end connection portion 140 is not limited to this embodiment.

Moreover, the second testing end 14 of the wire detection device 1 further includes a rack 144 and an actuator 146. The rack 144 of the second testing end 14 is arranged on the casing 1a of the wire detection device 1 along the first direction A1. The actuator 146 of the second testing end 14 includes a gear 146 a and a handle 146 b, and the gear 146 a of the actuator 146 engages with the rack 144 and is coupled to the second connecting portion 140 . The handle 146b of the actuator 146 is connected to the gear 146a for rotating relative to the rack 144 so that the gear 146a rolls relative to the rack 144 , and then drives the second end connecting portion 140 to move relative to the wire detection device 1 along the first direction A1.

Also shown in Figure 1, Figure 3A and Figure 3B, the wire detection device 1 further has a first track (not shown, located below the second test end 14), a second track 1b, two clamping parts 148 and two clamping Arm 150. The first track of the wire detection device 1 is arranged on the housing 1a of the wire detection device 1 along the first direction A1, the second end connection part 140 of the second test end 14 moves along the first track, and the second end of the wire detection device 1 The rail 1b is disposed on the casing 1a of the wire detection device 1 along the second direction A2. The stopper 142 of the second test end 14 is disposed in the second track 1b (that is, the stopper 142 of the second test end 14 is a component disposed on the second track). The two clamping pieces 148 of the wire detecting device 1 are located in the second track 1b and are respectively located on two sides of the limiting piece 142 . The two clamping parts 148 of the wire detecting device 1 can only slide along the second direction A2 in the second track 1b. The two clamping arms 150 of the wire detection device 1 are respectively disposed on two sides of the second end connecting portion 140 and extend toward the limiting member 142 . The limiting part 142 and the clamping part 148 of the second testing end 14 are located between the clamping arm 150 . When the second end connecting portion 140 has not moved toward the stopper 142 along the first track (that is, the first direction A1), the two clamping arms 150 of the wire detection device 1 are respectively in contact with the two clamping members 148, but the two The clamping piece 148 is not in contact with the limiting piece 142 , as shown in FIG. 3A . However, during the movement of the second end connecting portion 140 along the first track toward the stopper 142, each clamping arm 150 makes the corresponding clamping member 148 approach the stopper 142 along the second track 1b, thereby making the wire 2 The second end 2b is clamped between the clamping pieces 148, as shown in FIG. 3B.

Further, each clamping arm 150 of the wire detecting device 1 includes a first clamping portion 150a and a guiding portion 150b. The first clamping portion 150 a of the clamping arm 150 is connected to the second end connecting portion 140 . The guiding part 150b of the clamping arm 150 is connected to the first clamping part 150a for guiding the corresponding clamping part 148 along the second track 1b when the second end connecting part 140 moves toward the stopper 142 along the first track. slide towards the stopper 142 . In addition, each clamping arm 150 of the wire detection device 1 further includes a second clamping portion 150c. The second clamping portion 150c of the clamping arm 150 is connected to the corresponding guide portion 150b and is substantially parallel to the first clamping portion 150a. When the second end connecting portion 140 has not moved toward the stopper 142 along the first track (that is, the first direction A1), the second clamping portion 150c of each clamping arm 150 is in contact with the two clamping members 148 respectively. , as shown in Figure 3A. However, if it is only for the purpose of guiding the corresponding clamping member 148 to slide toward the limiting member 142 along the second track 1b during the movement of the second end connecting portion 140 along the first track 1b toward the limiting member 142, the wire detection device 1 Each clamping arm 150 may also not include the second clamping portion 150c.

It should be noted here that the distance between the two first clamping portions 150a of the two clamping arms 150 in the second direction A2 is slightly smaller than the length of the stopper 142 of the second test end 14 in the second direction A2. and the sum of the lengths of the two clamping parts 148 in the second direction A2, so that the connecting part 140 at the second end moves toward the limiting part 142 along the first track so that each first clamping part 150a contacts the corresponding clamping part 150a. When the member 148 is used, each clamping arm 150 can firmly make the corresponding clamping member 148 clamp the limiting member 142 (that is, similar to the concept of tight fit).

In this way, the wire detecting device 1 of the present invention can simultaneously firmly fix the limiting member 142 while the second end connecting portion 140 moves toward the limiting member 142 along the first track, so that the second end 2b of the wire 2 is connected to the second The end connection part 140 has better stability when connected. Moreover, the second test end 14 of the wire detection device 1 replaces the previous manual wire insertion method by the above-mentioned mechanism insertion method, so a single tester only needs to simply turn the handle 146b of the actuator 146 to easily make the wire 2 The second end 2 b is connected to the second end connecting portion 140 , so that the inspection process of the wire 2 is performed through the wire inspection device 1 of the present invention.

In another embodiment, the wire detection device 1 of the present invention can set the selection button 10 at the end of the second clamping portion 150c of the clamping arm 150 in FIG. 3B , so that the wire detection device 1 of the present invention can achieve Device purpose for automatic measurement. After the second end connecting portion 140 moves toward the stopper along the first direction A1, when the second end connecting portion 140 is inserted into the second end 2b of the wire 2, the second clamping portion 150c of the clamping arm 150 will contact the Select the button 10, then the wire detection device 1 of the present invention will automatically call the corresponding function to measure the wire 2 and give the test result. The advantage of this embodiment is that one manual operation is omitted, thereby further saving detection time.

In one embodiment, the wire detection device 1 of the present invention further includes a power storage device (not shown). The power storage device of the wire detection device 1 is electrically connected to the processor 16 for supplying power to the wire detection device.

The wire 2 detected by the present invention is a low-voltage differential signaling (LVDS) wire, but the present invention is not limited thereto.

Please refer to Figure 4. FIG. 4 is a flow chart showing the steps of a wire detection method according to an embodiment of the present invention.

As shown in FIG. 4 , in this embodiment, the wire detection method uses a wire detection device to test various types of wires. The wire detection device includes a plurality of selection keys and a display unit. Each selection button of the wire detecting device corresponds to one of the wires. For the components contained in the wire detection device and the connection relationship between the components, please refer to the above-mentioned wire detection device 1 shown in FIG. 1 and FIG.

It should be noted here that the wire detection method of the present invention includes the following steps.

Step S100: Electrically connect the wire to the wire detection device.

Step S102: Scan the selected key according to multiple key scanning functions, and then obtain the scanning result.

Step S104: Determine whether the selection button corresponding to the electrically connected wire is touched according to the scanning result.

If the judgment result of step S104 is yes, step S106 is further executed. If the judgment result of step S104 is no, step S102 is repeatedly executed.

Step S106: Perform data collection on the electrically connected wires according to the data collection function corresponding to the touched selection button, and then generate a test result.

Step S108: Display the test result on the display unit.

From the above detailed description of specific embodiments of the present invention, it can be clearly seen that the second test end of the wire rod detection device of the present invention can be connected to one end of the wire rod to be tested, and the first test end includes multiple One of the first end connecting parts can be selectively connected to the other end of the wire to be tested, so that the functions of multi-channel switching and collecting the voltage of the wire to be tested by channels can be achieved. Then, the wire detection device selects the corresponding data acquisition function through the selection of the selection button, and the processor collects corresponding data according to one end of the wire to be tested at the first test end, and compares the data with the other end of the wire to be tested at the second test end, And then generate test results, and display the test results on the display unit. The pin result of the wire to be tested can also be displayed through the corresponding button. Therefore, compared with the existing wire rod testing machine which measures many screens and manually analyzes to know whether the wire rod to be tested is qualified, the wire rod detection device of the present invention greatly reduces the detection time and reduces the misjudgment of test results. In addition, the second test end of the wire testing device replaces the previous manual wire insertion method with a mechanism insertion method, so a single tester can easily perform the inspection procedure of the wire to be tested.

Hereinbefore, specific embodiments of the present invention have been described with reference to the accompanying drawings. However, those skilled in the art can understand that without departing from the spirit and scope of the present invention, various changes and substitutions can be made to the specific embodiments of the present invention. These changes and substitutions all fall within the scope defined by the claims of the present invention.

Claims (6)

1. The utility model provides a wire rod detection device for test a plurality of wire rods, its characterized in that, this wire rod detection device contains:

a plurality of selection keys, each selection key corresponding to one of the wires;

the first test end comprises a plurality of first end connecting parts, and each first end connecting part is used for being correspondingly connected to a first end of a wire;

a second testing end for connecting a second end of the wire;

a key circuit electrically connected to the plurality of selection keys for selecting one of the plurality of key scan functions corresponding to the activation of one of the plurality of selection keys;

a signal acquisition circuit for selecting one of the corresponding data acquisition functions according to one of the key scanning functions; and

the processor is electrically connected with the key circuit and used for scanning according to one of the key scanning functions to judge one of the touched selection keys, and the processor is also electrically connected with the signal acquisition circuit and used for carrying out data acquisition on the electrically connected wires according to one of the data acquisition functions so as to generate a test result;

the second testing terminal includes:

the second end connecting part is arranged on the wire detecting device and can slide relative to the wire detecting device along a first direction; and

a limiting member for fixing the second end of the wire rod in a pluggable manner, wherein the second end connecting portion can move towards the limiting member along the first direction, so that the second end is electrically connected with the second end connecting portion;

the second testing terminal further comprises:

the first track is arranged along the first direction, and the second end connecting part moves along the first track;

a second track arranged along a second direction, wherein the limiting member is configured on the second track;

two clamping pieces which are positioned in the second track and are respectively positioned at two sides of the limiting piece; and

two clamping arms respectively arranged at two sides of the second end connecting part and extending towards the limiting part, wherein the limiting part and the clamping part are positioned between the clamping arms;

during the movement of the second end connecting part along the first track toward the limiting part, each clamping arm enables the corresponding clamping part to approach the limiting part along the second track, so that the limiting part is clamped between the clamping parts;

the second direction is perpendicular to the first direction.

2. The wire detecting device according to claim 1, wherein each of the holding arms comprises:

the first clamping part is connected with the second end connecting part; and

the guiding portion is connected to the first clamping portion and used for guiding the corresponding clamping member to slide along the second rail toward the limiting member during the period that the second end connecting portion moves along the first rail toward the limiting member.

3. The wire detecting device of claim 2, wherein each of the holding arms further comprises a second holding portion connected to the corresponding guiding portion.

4. The wire detecting device of claim 1, further comprising a display unit electrically connected to the processor for displaying the test result.

5. The wire detecting device of claim 1, further comprising a power storage device electrically connected to the wire detecting device for supplying power to the wire detecting device.

6. A wire detecting method for testing a plurality of wires of different types by the wire detecting device of any one of claims 1 to 5, the wire detecting device comprising a plurality of selection buttons and a display unit, each selection button corresponding to one of the plurality of wires, the wire detecting method comprising the steps of:

(a) electrically connecting a wire to the wire detecting device;

(b) scanning the plurality of selection keys according to a plurality of key scanning functions to further obtain a scanning result;

(c) judging whether the selection key corresponding to the electrically connected wire is touched according to the scanning result, if so, executing the step (d), and if not, executing the step (b), wherein each key scanning function corresponds to one of the selection keys;

(d) performing data acquisition on the electrically connected wire according to a data acquisition function corresponding to the touched selection key so as to generate a test result; and

(e) and displaying the test result on the display unit.