CN219574229U - Acousto-optic test pencil - Google Patents

Abstract

The present disclosure relates to an acousto-optic test pencil, wherein the acousto-optic test pencil includes a housing having an inner cavity, an output unit, at least one set of pin pairs, wherein the output unit is disposed in the inner cavity and is configured to output multimedia information based on a resistance value of an object to be tested. The at least one group of pin pairs comprise a first pin pair, the first pin pair comprises a first pin and a second pin, the first end of the first pin is connected with the first end of the output unit, the first end of the second pin is connected with the second end of the output unit, and the second end of the first pin and the second end of the second pin extend out of the shell and are used for being connected with an object to be tested in series outside the shell. The output unit of the acousto-optic test pencil can output multimedia information based on the resistance value of the object to be tested, namely, the object to be tested with different resistance values can enable the output unit to output different multimedia information, and the acousto-optic test pencil is beneficial to increasing operation and test interestingness of the acousto-optic test pencil.

Description

Acousto-optic test pencil

Technical Field

The present disclosure relates to the field of circuit detection, and more particularly, to an acousto-optic test pencil.

Background

When the prior art in the industry tests whether the object to be detected has the conductive performance, the object to be detected is often directly connected into a simple circuit, and then whether the small lamp in the circuit emits light or not or whether the buzzer in the circuit emits sound is observed, so that whether the object to be detected has the conductive performance is judged. However, in the testing process of the prior art, the problems of complicated steps for connecting the detected objects, inconvenient carrying of the detection device, insufficient sensitivity of feedback of the detection result and lower interestingness exist.

Disclosure of Invention

The utility model provides an acousto-optic test pencil in order to solve the problem that exists among the prior art.

According to a first aspect of the present disclosure, there is provided an acousto-optic test pencil comprising:

a housing having an interior cavity;

an output unit disposed in the inner cavity and configured to output multimedia information based on a resistance value of an object to be measured;

the device comprises at least one group of pin pairs, wherein the at least one group of pin pairs comprise a first pin pair and a second pin pair, the first end of the first pin is connected with the first end of the output unit, the first end of the second pin is connected with the second end of the output unit, and the second end of the first pin and the second end of the second pin extend out of the shell and are used for connecting an object to be tested in series outside the shell.

In one embodiment of the disclosure, the first end of the second pin is disposed in the inner cavity, the second end of the second pin is configured to extend out from the inner cavity and form a nib portion connected in series with an external object to be tested, and the second end of the first pin is configured to be sleeved on a pen holder of the acousto-optic test pencil and form a hand grip portion connected in series with the external object to be tested.

In one embodiment of the disclosure, the acousto-optic test pencil further includes a third pin disposed on the acousto-optic test pencil at an end remote from the second pin; the first end of the third pin is connected with the second end of the output unit, and the second end of the third pin extends out of the shell and is used for connecting an object to be tested in series outside the shell;

the third pin and the first pin form a second pin pair, and the second pin pair is configured to form a closed loop after being connected in series with an external object to be tested.

In one embodiment of the disclosure, the acousto-optic test pencil further includes a fourth pin disposed on the acousto-optic test pencil adjacent to an end of the third pin; the first end of the fourth pin is connected with the first end of the output unit, and the second end of the fourth pin extends out of the shell and is used for connecting an object to be tested in series outside the shell;

the fourth pin is matched with any one of the second pin or the third pin to form a third pin pair, and the third pin pair is configured to form a closed loop after being connected in series with an external object to be tested.

In one embodiment of the disclosure, the acousto-optic test pencil further includes a fifth pin disposed on the acousto-optic test pencil at an end adjacent to the third pin and distal from the fourth pin; the first end of the fifth pin is connected with the second end of the output unit, and the second end of the fifth pin extends out of the shell and is used for connecting an object to be tested in series outside the shell;

the fifth pin is matched with any one of the first pin or the fourth pin to form a fourth pin pair, and the fourth pin pair is configured to form a closed loop after being connected in series with an external object to be tested.

In one embodiment of the present disclosure, the second end of the second pin is configured to be in the shape of a cone; the inner cavity of the shell comprises a columnar first inner cavity and a second inner cavity extending from the first inner cavity towards a direction far away from the second pin, the sectional area of the second inner cavity is larger than that of the first inner cavity, and the second inner cavity is configured for accommodating the output unit;

the third pin is arranged at the top of the second inner cavity, the second end of the third pin is in a spherical shape, the fourth pin and the fifth pin are respectively distributed at two sides of the second inner cavity, and the second end of the fourth pin and the second end of the fifth pin are in a C shape.

In one embodiment of the present disclosure, the hand grip of the first pin, the pen tip of the second pin, the second end of the third pin, the second end of the fourth pin, and the second end of the fifth pin are conductive silicone.

In one embodiment of the present disclosure, the output unit includes:

a circuit board configured to be connected with the pair of pins;

and a sound assembly configured to output different tones based on different resistance values of the object to be measured.

In one embodiment of the present disclosure, the sound component is configured to output different tones corresponding to musical scales based on monotonic changes in the resistance value of the object under test.

In one embodiment of the present disclosure, the output unit includes:

and a display assembly configured to output different light effects based on a monotonic change in the resistance value of the object to be measured.

The acousto-optic test pencil has the beneficial effects that the output unit of the acousto-optic test pencil can output multimedia information based on the resistance value of the to-be-tested object, namely, the to-be-tested object with different resistance values can enable the output unit to output different multimedia information, and therefore the difference of the resistance values among different to-be-tested objects can be judged through the multimedia information output by the output unit. And, a plurality of different multimedia output results are also favorable for increasing the operation and test interestingness of the acousto-optic test pencil.

Other features of the present disclosure and its advantages will become apparent from the following detailed description of exemplary embodiments of the disclosure, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.

FIG. 1 is a schematic perspective view of an acousto-optic test pencil according to an embodiment of the present disclosure;

FIG. 2 is a schematic front view of an acousto-optic test pencil according to an embodiment of the present disclosure;

FIG. 3 is a schematic rear view of an acousto-optic test pencil provided in an embodiment of the present disclosure;

FIG. 4 is a cross-sectional view of an acousto-optic test pencil provided in an embodiment of the present disclosure;

FIG. 5 is a cross-sectional view of another angled acousto-optic test pencil provided by an embodiment of the present disclosure;

FIG. 6 is a schematic side view of an acousto-optic test pencil provided in an embodiment of the present disclosure;

the one-to-one correspondence between the component names and the reference numerals in fig. 1 to 6 is as follows:

1. a first pin; 12. a hand grip; 2. a second pin; 21. a first end of the second pin; 22. a pen tip; 3. a third pin; 31. a first end of the third pin; 32. a second end of the third pin; 4. a fourth pin; 41. a first end of the fourth pin; 42. a second end of the fourth pin; 5. a fifth pin; 51. a first end of the fifth pin; 52. a second end of the fifth pin; 6. a housing; 61. a first lumen; 62. a second lumen; 7. an output unit; 71. a circuit board; 72. a through hole; 73. a switch button; 74. a charging port; 75. and a display assembly.

Detailed Description

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless it is specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.

Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Specific embodiments of the present disclosure are described below with reference to the accompanying drawings.

In this document, "upper", "lower", "front", "rear", "left", "right", and the like are used merely to indicate relative positional relationships between the relevant portions, and do not limit the absolute positions of the relevant portions.

Herein, "first", "second", etc. are used only for distinguishing one another, and do not denote any order or importance, but rather denote a prerequisite of presence.

Herein, "equal," "same," etc. are not strictly mathematical and/or geometric limitations, but also include deviations that may be appreciated by those skilled in the art and allowed by fabrication or use, etc.

The present disclosure provides an acousto-optic test pencil that includes a housing having an interior cavity, an output unit disposed in the interior cavity, and at least one set of pin pairs. The output unit is configured to output the multimedia information based on the resistance value of the object to be measured. The at least one group of pin pairs comprise a first pin pair, the first pin pair comprises a first pin and a second pin, wherein the first end of the first pin is connected with the first end of the output unit, the first end of the second pin is connected with the second end of the output unit, and the second end of the first pin and the second end of the second pin extend out of the shell and are used for being connected with an object to be tested in series outside the shell.

In one application scenario of the present disclosure, when the external object to be measured is a conductor, after the external object to be measured is connected in series with the second end of the first pin and the second end of the second pin, the first pin, the external object to be measured, the second pin and the output unit cooperate to form a closed loop, and at this time, the output unit is configured to output multimedia information based on a resistance value of the external object to be measured connected in series in the current closed loop. The user can test different objects to be tested based on the method, and the difference of the resistance values among the different objects to be tested can be judged by acquiring different multimedia information. When the external object to be tested is a non-conductor, the first pin, the external object to be tested, the second pin and the output unit can not form a closed loop, and then the output unit can not output multimedia information. Based on this, the user can determine whether the current analyte has conductivity.

For ease of understanding, the specific structure of the acousto-optic test pencil of the present disclosure and its operation principle will be described in detail with reference to fig. 1 to 6 in conjunction with an embodiment.

Referring to fig. 1, in one embodiment of the present disclosure, an acousto-optic test pencil is provided that includes a housing 6, an output unit 7, and at least one set of pin pairs. Referring also to fig. 4, the housing 6 has an inner cavity. The output unit 7 is provided in the inner cavity, and is configured to output multimedia information based on the resistance value of the object to be measured. At least one group of pin pairs comprises a first pin pair, the first pin pair comprises a first pin 1 and a second pin 2, the first end of the first pin 1 is connected with the first end of the output unit 7, the first end 21 of the second pin is connected with the second end of the output unit 7, and the second end of the first pin and the second end of the second pin extend out of the shell 6 and are used for being connected with an object to be tested in series outside the shell 6. In this embodiment, referring to fig. 5, the first end of the first pin, the first end of the output unit 7, the first end 21 of the second pin, and the second end of the output unit 7 are sequentially connected to form a loop, and when the second end of the first pin, the second end of the second pin, and the external object to be tested are serially connected together, a closed loop is formed.

In one application scenario of the present disclosure, when the external object to be measured is a conductor, after the external object to be measured is connected in series with the second end of the first pin and the second end of the second pin, the first pin 1, the external object to be measured, the second pin 2, and the output unit 7 cooperate to form a closed loop, and at this time, the output unit 7 outputs multimedia information based on the resistance value of the external object to be measured currently connected in series, and records the multimedia information as the first multimedia information. In this application scenario, when the second end of the first pin, the second end of the second pin, and other external objects to be tested are connected in series, and a closed loop is formed, the output unit 7 outputs the multimedia information corresponding to the resistance value based on the resistance value of the external objects to be tested in the current closed loop, and records the multimedia information as the second multimedia information. The user can acquire the resistance value difference between the two external objects to be measured based on the first multimedia information and the second multimedia information.

In one embodiment of the present disclosure, the output unit 7 includes a circuit board 71, and a circuit layout for outputting different multimedia information according to a resistance change is disposed on the circuit board 71, and when the first pin 1, the second pin 2, and the external object to be tested form a closed loop, different electrical signals can be output according to different resistance values of the external object to be tested through a circuit on the circuit board 71. These multimedia information may be preset in components in the circuit board 71. In addition, it should be noted that the circuit principle of outputting different electrical signals according to different resistance values and the adoption of corresponding components are all common knowledge of those skilled in the art, and those skilled in the art can realize outputting different signals based on different resistance values based on the existing circuit principle, which is not described in detail herein.

In general, it is difficult for an external object to be directly connected in series with the second end of the first pin and the second end of the second pin. In one application scenario of the present disclosure, a user may connect the second end of the first pin with an external object to be tested in series, then connect the second end of the second pin with the external object to be tested in series by using any one hand of the user, and finally connect the second end of the first pin with the second end of the second pin by using the other hand of the user, thereby forming a closed loop among the first pin 1, the external object to be tested, the user, the second pin 2 and the output unit 7. If the external object to be tested is a conductor at this time, the output unit 7 outputs corresponding multimedia information based on the external object to be tested, so that the user can conveniently connect the external object to be tested and the acousto-optic test pencil together in series, and the interaction behavior of the user in the test process can be increased, so that the purpose of improving the use experience of the user is achieved.

In one embodiment of the present disclosure, to increase the playability of the acousto-optic test pencil, referring to fig. 4, 5, the output unit 7 includes a sound component. Wherein the circuit board 71 is configured to be connected with the pair of pins. The acoustic assembly is configured to output different tones based on different resistance values of the object under test. When testing different external objects to be tested, the user can judge whether the external object to be tested can conduct electricity or not and the resistance value of the external object to be tested can be judged based on the tone emitted by the sound component in the output unit 7.

In one particular embodiment of the present disclosure, the circuit board 71 is configured to mate with the first ends of the pin pairs and control the sound assembly to emit different tones based on the magnitude of the resistance of the external test object within the current closed loop when the second ends of the pin pairs form a closed loop with the external test object, and to control the sound assembly to emit or not emit tones based on whether the external test object within the current closed loop is conductive.

In one embodiment of the present disclosure, the sound component is configured to output different tones corresponding to musical scales based on monotonic changes in the resistance value of the object under test. Alternatively, the larger the resistance value of the external object to be measured, the higher the tone emitted by the sound component after forming a closed loop with the pin pair and the output unit 7; alternatively, the greater the resistance of the external test object, the lower the tone emitted by the acoustic assembly, and the disclosure is not so limited. In one embodiment of the disclosure, the sound component may be a horn or a speaker, and when the resistance value of the external object to be measured is larger, the current output to the horn or the speaker is larger, so that the horn or the speaker generates higher tone. Such a method of controlling the horn or speaker to emit different tones is well known to those skilled in the art and will not be described in detail herein.

In a specific embodiment of the present disclosure, referring to fig. 4, the inner cavity of the housing 6 includes a first inner cavity 61 having a cylindrical shape and a second inner cavity 62 extending from the first inner cavity 61 in a direction away from the second pin 2, the second inner cavity 62 having a larger cross-sectional area than the first inner cavity 61, the second inner cavity 62 being configured to accommodate the output unit 7. In one embodiment of the present disclosure, the first lumen 61 is cylindrical in cross-section and the second lumen 62 is rectangular in cross-section. Of course, the first and second inner cavities 61, 62 may have other shapes, such as circular, oval, etc., and the disclosure is not so limited.

In one embodiment of the present disclosure, referring to fig. 4 and 5, to further increase the playability of the acousto-optic test pencil, the output unit 7 further includes a display component 75. The display assembly 75 is configured to output different light effects based on monotonic changes in the resistance value of the object under test. Referring to fig. 5, in a specific embodiment of the present disclosure, the display assembly 75 is configured to be arranged on the circuit board 71 to be combined into a mood pattern, and the mood pattern in the display assembly 75 is illuminated when the output unit 7 is in the on state. In another embodiment of the present disclosure, the display assembly 75 is configured as the display assembly 75 with a display screen, and when the output unit 7 is in the on state, the display assembly 75 can output different light effects, or output multiple pattern styles formed by combining different lights, so that the output result of the display assembly 75 is enriched, the playability of the acousto-optic test pencil is increased to a certain extent, and the use experience of the user is improved.

In one embodiment of the present disclosure, to further increase the interest and ease of operation of the acousto-optic test pencil, referring to fig. 5, the first end 21 of the second pin is disposed in the first inner cavity 61, the second end of the second pin is configured to protrude from the first inner cavity 61 and form a nib 22 in series with an external object to be tested, and the second end of the first pin is configured to be sleeved on the barrel of the acousto-optic test pencil and form a grip 12 for being in series with the external object to be tested.

In the embodiment, the acousto-optic test pencil is designed into a shape of a common pencil in daily life, so that the operation and the use of a user are simplified, and the familiar shape is also beneficial to improving the hand experience of the user. In one application scenario of the present disclosure, a user may use the acousto-optic test pencil of the present disclosure according to a state of a daily pen. If the pen tip 22 is contacted with an external object to be tested together, the pen tip 22 and the external object to be tested are connected in series, then the user can naturally hold the hand holding part 12 of the hand-held acousto-optic test pencil in the process of holding the pen according to daily habits, the hand is connected with the hand holding part 12 in series, and finally the other hand of the user only needs to be contacted with the external object to be tested to form a closed loop, so that the external object to be tested is tested. In the whole test process, a user does not need to additionally learn test operation, and can test an external object to be tested only by using the acousto-optic test pencil according to the daily writing habit, so that the design greatly simplifies the test operability and is beneficial to expanding the user population.

In another application scenario of the present disclosure, a user may freely draw different patterns with a pencil on paper. Then, the user holds the holding part 12 with one hand and the other hand contacts the pattern drawn on the paper by holding the acousto-optic test pencil of the present disclosure, and places the pen tip 22 on the pattern contacted with the hand, and the holding part 12, the pen tip 22 and the output unit 7 form a closed loop because the human body, the graphite (contained in the pencil lead), the holding part 12 and the pen tip 22 have good conductivity, the drawn pattern can be regarded as an object to be tested, and the output unit 7 outputs sound and light effects based on the drawn pattern in the current loop.

Optionally, the user can move the pen tip 22 on the drawn pattern, so that the pen tip 22 moves relatively to the finger tip contacted with the pattern, so as to change the resistance value of the object to be measured connected in the closed loop, further change the sound tone and the displayed light effect emitted by the output unit 7, and realize simple music playing and pattern change display by continuously moving the pen tip 22.

In one embodiment of the present disclosure, referring to fig. 2, the acousto-optic test pencil further includes a third pin 3, the third pin 3 being disposed at an end of the acousto-optic test pencil remote from the second pin 2. The first end 31 of the third pin is connected to the second end of the output unit 7, and the second end 32 of the third pin extends out of the housing 6 and is used for connecting an object to be tested in series outside the housing 6. Referring to fig. 4 and 5, the third pin 3 is disposed at the top of the second inner cavity 62, and the second end 32 of the third pin is configured to be spherical, so that the design is beneficial to the user to operate the second end 32 of the third pin to be connected with an external object to be tested in series, and is also beneficial to protecting the user from collision when operating the acousto-optic test pencil of the present disclosure. In this embodiment, the third pin 3 and the first pin 1 form a second pin pair, and the second pin pair is configured to form a closed loop after being connected in series with an external object to be tested.

With continued reference to fig. 2 and 3, the second ends 32 of the third pins and the pen tip 22 are disposed at opposite ends of the housing 6. The design is convenient for a user to select any one end to be contacted with an external object to be measured while holding the hand holding part 12, and forms a closed loop. External analytes include, but are not limited to, solids, liquids, fluids, and the like. In one application scenario of the present disclosure, when the external object to be measured is water, the second end 32 of the third pin or the pen tip 22 may be extended into the water, and at this time, the user holds the hand grip 12 with one hand and extends into the water with the other hand, so as to form a closed loop among the water, the third pin 3, the user and the first pin 1.

In one embodiment of the present disclosure, referring to fig. 2 and 3, the acousto-optic test pencil further includes a fourth pin 4, and the fourth pin 4 is disposed on the acousto-optic test pencil adjacent to an end of the third pin 3. The first end 41 of the fourth pin is connected to the first end of the output unit 7, and the second end 42 of the fourth pin extends out of the housing 6 and is used for connecting an object to be tested in series outside the housing 6. In this embodiment, referring to fig. 4, the fourth pin 4 cooperates with the second pin 2 to form a third pin pair, and the third pin pair is configured to form a closed loop after being connected in series with an external object to be tested. In another embodiment, the fourth pin 4 cooperates with the third pin 3 to form a third pin pair, and the third pin pair is configured to form a closed loop after being connected in series with an external object to be tested. When the fourth pin 4 is required to be tested, the second pin 2 or the third pin 3 and the fourth pin 4 can be selected to form a pin pair according to actual requirements or testing requirements, and the disclosure is not limited excessively herein.

In one embodiment of the present disclosure, referring to fig. 2 and 3, the acousto-optic test pencil further includes a fifth pin 5, and the fifth pin 5 is disposed on an end of the acousto-optic test pencil adjacent to the third pin 3 and far from the fourth pin 4. The first end 51 of the fifth pin is connected to the second end of the output unit 7, and the second end 52 of the fifth pin extends out of the housing 6 and is used for connecting an object to be tested in series outside the housing 6. In this embodiment, referring to fig. 4 and 5, the fifth pin 5 cooperates with the first pin 1 to form a fourth pin pair, and the fourth pin pair is configured to form a closed loop after being connected in series with an external object to be tested. In another embodiment, the fifth pin 5 cooperates with the fourth pin 4 to form a fourth pin pair, and the fourth pin pair is configured to form a closed loop after being connected in series with an external object to be tested.

In one embodiment of the present disclosure, referring to fig. 4 and 5, the fourth pin 4 and the fifth pin 5 are respectively distributed on two sides of the second inner cavity 62, and the second end 42 of the fourth pin and the second end 52 of the fifth pin are C-shaped. The C-shaped structure is advantageous for contacting and connecting in series with an external test object, although it may be other shapes as long as it can be connected in series with an external test object, and the disclosure is not limited thereto.

In a specific application scenario of the present disclosure, the user holds the second end 42 of the fourth pin with one hand and holds the second end 52 of the fifth pin with the other hand, and a closed loop is formed among the user, the fourth pin 4, the fifth pin 5, and the output unit 7. In the application scene, the user can also change the connection position between the user and the fourth pin 4 or between the user and the fifth pin 5, for example, the user can respectively connect the user with the fourth pin 4 and the fifth pin 5 by arms and legs, and the sound and the light effect output by the output unit 7 are changed by changing the object to be tested connected with the user, so that the simple performance by using the human body is realized.

In one embodiment of the present disclosure, the output unit 7 is configured to output the same multimedia information after different pins form a closed loop with the same external object to be tested. In another embodiment of the present disclosure, the output unit 7 is configured to output different multimedia information after different pairs of pins form a closed loop with the same external object to be tested. In actual use, in the process of testing the same external object to be tested, users change the multimedia information output by the output unit 7 by changing different pin pairs, thereby increasing the playing method and the interestingness of the acousto-optic test pencil.

In one embodiment of the present disclosure, the grip 12 of the first pin 1, the nib 22 of the second pin 2, the second end 32 of the third pin, the second end 42 of the fourth pin, and the second end 52 of the fifth pin are conductive silicone. In another embodiment of the present disclosure, pen tip 22 is configured to be manufactured from a graphite material. In this way, the nib 22 can draw a path with conductivity directly on the paper. Of course, the hand 12, the nib 22, the second end 32 of the third pin, the second end 42 of the fourth pin, and the second end 52 of the fifth pin may be made of other materials having conductive properties, and the disclosure is not limited thereto.

In one embodiment of the present disclosure, referring to fig. 3, a switch button 73 is further provided on the back of the second cavity 62 to control the acousto-optic test pencil to be turned on or off. A plurality of through holes 72 penetrating the second cavity 62 and the external space are also provided above the switch knob 73. The through hole 72 is beneficial to the sound effect output by the sound component to be transmitted to the outside, and is beneficial to improving the use experience of users. Referring to fig. 6, one side of the second interior cavity 62 is further provided with a charging port 74 for interfacing with an external charging device, the other end of the charging port 74 being configured to be connected to a power source within the second interior cavity 62.

It should be noted that, the output unit of the present disclosure may be applied to other devices that need to display the test result by sound or light effect, and this disclosure is not limited to the example.

The foregoing description of the embodiments of the present disclosure has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the technical improvements in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the present disclosure is defined by the appended claims.

Claims (10)

1. An acousto-optic test pencil, comprising:

a housing (6), the housing (6) having an interior cavity;

an output unit (7), the output unit (7) being disposed in the inner cavity and configured to output multimedia information based on a resistance value of an object to be measured;

at least one group of pin pairs, at least one group of pin pairs comprises a first pin pair, the first pin pair comprises a first pin (1) and a second pin (2), the first end of the first pin is connected with the first end of the output unit (7), the first end of the second pin is connected with the second end of the output unit (7), and the second end of the first pin and the second end of the second pin extend out of the shell (6) and are used for connecting an object to be tested in series outside the shell (6).

2. The acousto-optic test pencil according to claim 1, wherein the first end of the second pin is disposed in the inner cavity, the second end of the second pin is configured to protrude from the inner cavity and form a nib (22) in series with an external test object, and the second end of the first pin is configured to fit over a barrel of the acousto-optic test pencil and form a hand grip (12) for being in series with an external test object.

3. The acousto-optic test pencil according to claim 2, characterized in that it further comprises a third pin (3), said third pin (3) being arranged at an end of said acousto-optic test pencil remote from said second pin (2); the first end (31) of the third pin is connected with the second end of the output unit (7), and the second end (32) of the third pin extends out of the shell (6) and is used for connecting an object to be tested in series outside the shell (6);

the third pin (3) and the first pin (1) form a second pin (2) pair, and the second pin (2) pair is configured to form a closed loop after being connected in series with an external object to be tested.

4. An acousto-optic test pencil according to claim 3, characterized in that it further comprises a fourth pin (4), said fourth pin (4) being arranged on said acousto-optic test pencil adjacent to one end of said third pin (3); the first end (41) of the fourth pin is connected with the first end of the output unit (7), and the second end (42) of the fourth pin extends out of the shell (6) and is used for connecting an object to be tested in series outside the shell (6);

the fourth pin (4) is matched with any one pin of the second pin (2) or the third pin (3) to form a third pin pair, and the third pin pair is constructed to be connected with an external object to be tested in series to form a closed loop.

5. The acousto-optic test pencil according to claim 4, characterized in that it further comprises a fifth pin (5), said fifth pin (5) being arranged on said acousto-optic test pencil at an end adjacent to said third pin (3) and remote from said fourth pin (4); the first end (51) of the fifth pin is connected with the second end of the output unit (7), and the second end (52) of the fifth pin extends out of the shell (6) and is used for connecting an object to be tested in series outside the shell (6);

the fifth pin (5) is matched with any one pin of the first pin (1) or the fourth pin (4) to form a fourth pin pair, and the fourth pin pair is constructed to be connected with an external object to be tested in series to form a closed loop.

6. The acousto-optic test pencil according to claim 5, wherein the second end of the second pin is configured to be in the shape of a cone; the inner cavity of the housing (6) comprises a first inner cavity (61) with a columnar shape and a second inner cavity (62) extending from the first inner cavity (61) towards a direction away from the second pin (2), the cross-sectional area of the second inner cavity (62) is larger than that of the first inner cavity (61), and the second inner cavity (62) is configured for accommodating the output unit (7);

the third pins (3) are arranged at the top of the second inner cavity (62), the second ends (32) of the third pins are configured to be spherical, the fourth pins (4) and the fifth pins (5) are respectively distributed on two sides of the second inner cavity (62), and the second ends (42) of the fourth pins and the second ends (52) of the fifth pins are C-shaped.

7. The acousto-optic test pencil according to claim 5, wherein the hand grip (12) of the first pin (1), the nib (22) of the second pin (2), the second end (32) of the third pin, the second end (42) of the fourth pin and the second end (52) of the fifth pin are conductive silicone.

8. The acousto-optic test pencil according to claim 1, characterized in that the output unit (7) comprises:

-a circuit board (71), the circuit board (71) being configured to be connected with the pair of pins;

and a sound assembly configured to output different tones based on different resistance values of the object to be measured.

9. The acousto-optic test pencil according to claim 8, wherein the acoustic assembly is configured to output different tones corresponding to musical scales based on monotonic changes in the resistance value of the test object.

10. The acousto-optic test pencil according to claim 9, characterized in that the output unit (7) comprises:

a display assembly (75), the display assembly (75) being configured to output different light effects based on monotonic changes in the resistance value of the test object.