CN112532773A - Fixed telephone - Google Patents
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- CN112532773A CN112532773A CN202011424331.XA CN202011424331A CN112532773A CN 112532773 A CN112532773 A CN 112532773A CN 202011424331 A CN202011424331 A CN 202011424331A CN 112532773 A CN112532773 A CN 112532773A
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- 238000001514 detection method Methods 0.000 claims abstract description 56
- 239000000523 sample Substances 0.000 claims description 31
- 238000005259 measurement Methods 0.000 claims description 20
- 238000003825 pressing Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 12
- 238000010586 diagram Methods 0.000 description 11
- 238000004590 computer program Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000006870 function Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/24—Arrangements for testing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Abstract
The present invention provides a fixed telephone, comprising: the detection device is arranged on the side edge of the base machine body; the detection device comprises a measuring ammeter and a restorer, one end of the restorer is connected with the measuring ammeter, the other end of the restorer is connected with the side edge of the base phone body, detection rods are arranged at two ends of the measuring ammeter, a moving hole is formed in the side edge of the base phone body, and the detection rods penetrate through the moving hole and enter the base phone body; the base machine comprises a base machine body, a touch net rack, a telescopic piece, a detection rod and a touch net rack, wherein the base machine body is internally provided with the touch net rack which is vertically arranged above the level of a key circuit in the base machine body; the detection rod is inclined downwards by taking a central axis in the horizontal direction as a center. The invention has simple structure, and when the user finds that the key cannot be pressed or the key does not react, the detection can be carried out by pressing the measuring ammeter.
Description
Technical Field
The invention relates to the technical field of communication equipment, in particular to a fixed telephone.
Background
A fixed telephone is called a fixed telephone for short, commonly called a landline telephone, and refers to a telephone set which is fixed at a certain position and does not move. Fixed telephone is one of the important communication means in modern times, and utilizes the microphone in the telephone to modulate the current voltage on the telephone line by means of the vibration of voice, i.e. converts the voice into a voltage signal, and transmits the voltage signal to the other end of the telephone through the telephone line, and then utilizes the microphone to convert the voltage signal into a voice signal.
When the fixed telephone is used, a user is required to dial in the keys and connect and communicate with other telephones through dialing numbers. However, as the use time goes on, the key circuit or the printed circuit in the fixed telephone is repaired over time, and the circuit may be short-circuited or disconnected. The current common maintenance and detection mode is to disassemble the fixed telephone and then perform short circuit detection on each line.
However, in a common mode, the fixed telephone needs to be disassembled every time, and the fixed telephone needs to be assembled again after detection, so that the operation is difficult, the detection efficiency is low, and the fixed telephone is a sealed precise device, so that a circuit is easy to damage due to touch errors in the detection process, the damage risk is increased, and the fixed telephone is inconvenient for a user to operate and use.
Disclosure of Invention
In view of the above, embodiments of the present invention provide a fixed telephone that overcomes or at least partially solves the above problems.
In this embodiment, there is provided a fixed telephone comprising: the detection device is arranged on the side edge of the base machine body;
the detection device comprises a measuring ammeter and a restorer, one end of the restorer is connected with the measuring ammeter, the other end of the restorer is connected with the side edge of the base machine body, detection rods are arranged at two ends of the measuring ammeter, a moving hole is formed in the side edge of the base machine body, and the detection rods penetrate through the moving hole and enter the base machine body;
a touch net rack is arranged in the base unit body and vertically arranged above the level of a key circuit in the base unit body, an extensible member is arranged at one end of the touch net rack, the touch net rack is connected with the base unit body through the extensible member, a connecting hole is formed in the side edge of the touch net rack, and a detection rod is inserted into the connecting hole so as to be connected with the touch net rack;
the probe rod uses the axis of horizontal direction as central downward sloping, and inclination is alpha, works as the probe rod is followed it is past to remove the hole during the inside removal of base unit body, the probe rod inserts the connecting hole, and through the connecting hole will the touching rack is pulled down, so that the touching rack with the inside key circuit touching of base unit body is connected, supplies the measurement ammeter is surveyed the key circuit.
Further, the angle range of the inclination angle α is 5 to 45 °.
Further, a preferred angle of the inclination angle α is 30 °.
Further, the touch rack is provided with a touch joint, and the touch rack passes through the touch joint and the key line connection.
Furthermore, the horizontal movement distance of the detection rod in the moving hole is S, the distance difference between the touch joint and the key line in the horizontal direction is S, the hole depth of the connecting hole is d, and S is larger than S + d.
Further, the distance that the probe rod pushes the touch net rack to descend is H, the height difference between the touch joint and the key circuit when the touch joint is static is H, H is larger than H, and H is smaller than S.
Furthermore, a probe is arranged at the connecting end of the touch joint and the key circuit, and the touch joint is connected with the key circuit through the probe.
Further, the base phone body is provided with a handle earphone.
Further, the base unit body is provided with a display screen.
Furthermore, the bottom of the base unit body is provided with an anti-slip pad.
The application has the following advantages:
in the embodiment of the application, the detection device comprises a measuring electric meter and a restorer, one end of the restorer is connected with the measuring electric meter, the other end of the restorer is connected with the side edge of the base unit body, detection rods are arranged at two ends of the measuring electric meter, a moving hole is formed in the side edge of the base unit body, and the detection rods penetrate through the moving hole to enter the base unit body; a touch net rack is arranged in the base unit body and vertically arranged above the level of a key circuit in the base unit body, an extensible member is arranged at one end of the touch net rack, the touch net rack is connected with the base unit body through the extensible member, a connecting hole is formed in the side edge of the touch net rack, and a detection rod is inserted into the connecting hole so as to be connected with the touch net rack; the probe rod uses the axis of horizontal direction as central downward sloping, and inclination is alpha, works as the probe rod is followed it is past to remove the hole during the inside removal of base unit body, the probe rod inserts the connecting hole, and through the connecting hole will the touching rack is pulled down, so that the touching rack with the inside key circuit touching of base unit body is connected, supplies the measurement ammeter is surveyed the key circuit. The key line detection device is simple in structure and easy to operate, when a user finds that the key cannot be pressed or the key does not react, the key line can be detected by pressing the measurement ammeter, the whole fixed telephone body does not need to be disassembled for detection, the detection efficiency is improved, the fault reason can be quickly detected, and the maintenance of the user is facilitated.
Drawings
In order to more clearly illustrate the technical solutions of the present application, the drawings needed to be used in the description of the present application will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic diagram of a fixed-line telephone according to the present invention;
FIG. 2 is a front cross-sectional view of a landline telephone of the present invention;
FIG. 3 is a schematic circuit diagram of a keying circuit of the present invention;
FIG. 4 is a schematic view of a stationary configuration of a test device according to the present invention;
FIG. 5 is a schematic view of a detecting device according to the present invention.
A base unit body 1; a detection device 2; a handle handset 11; a display screen 12; touching the net rack 13; a key circuit 14; a telescopic member 15; a touch joint 16; a measurement ammeter 21; a repositor 22; a detection rod 23.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, there is shown a fixed telephone of the present invention comprising: the detection device 2 is arranged on the side edge of the base machine body 1;
the detection device 2 comprises a measuring electric meter 21 and a restorer 22, one end of the restorer 22 is connected with the measuring electric meter 21, the other end of the restorer 22 is connected with the side edge of the base unit body 1, detection rods 23 are arranged at two ends of the measuring electric meter 21, a moving hole is formed in the side edge of the base unit body 1, and the detection rods 23 penetrate through the moving hole to enter the base unit body 1;
a touch net rack 13 is arranged inside the base unit body 1, the touch net rack 13 is vertically arranged above the level of a key circuit 14 inside the base unit body 1, a telescopic piece 15 is arranged at one end of the touch net rack 13, the touch net rack 13 is connected with the base unit body 1 through the telescopic piece 15, a connecting hole is formed in the side edge of the touch net rack 13, and a detection rod 23 is inserted into the connecting hole so as to enable the detection rod 23 to be connected with the touch net rack 13;
the probe rod 23 uses the axis of horizontal direction as the central downward sloping, and inclination is alpha, works as the probe rod 23 is followed the removal hole is toward when the internal portion of base unit 1 moves, the probe rod 23 inserts the connecting hole, and through the connecting hole will the touching rack 13 is drawn downwards, so that touching rack 13 with the inside key circuit 14 touching of base unit 1 is connected, supplies the measurement ammeter 21 surveys key circuit 14.
In the embodiment of the application, the detection device 2 comprises a measuring electric meter 21 and a restorer 22, one end of the restorer 22 is connected with the measuring electric meter 21, the other end of the restorer 22 is connected with the side edge of the base unit body 1, two ends of the measuring electric meter 21 are provided with detection rods 23, the side edge of the base unit body 1 is provided with a moving hole, and the detection rod 23 penetrates through the moving hole to enter the base unit body 1; a touch net rack 13 is arranged inside the base unit body 1, the touch net rack 13 is vertically arranged above the level of a key circuit 14 inside the base unit body 1, a telescopic piece 15 is arranged at one end of the touch net rack 13, the touch net rack 13 is connected with the base unit body 1 through the telescopic piece 15, a connecting hole is formed in the side edge of the touch net rack 13, and a detection rod 23 is inserted into the connecting hole so as to enable the detection rod 23 to be connected with the touch net rack 13; the probe rod 23 uses the axis of horizontal direction as the central downward sloping, and inclination is alpha, works as the probe rod 23 is followed the removal hole is toward when the internal portion of base unit 1 moves, the probe rod 23 inserts the connecting hole, and through the connecting hole will the touching rack 13 is drawn downwards, so that touching rack 13 with the inside key circuit 14 touching of base unit 1 is connected, supplies the measurement ammeter 21 surveys key circuit 14. The invention has simple structure and simple operation, when a user finds that the key cannot be pressed or the key does not react, the key circuit 14 can be detected by pressing the measuring ammeter 21 without disassembling the whole fixed telephone body 1 for detection, thereby improving the detection efficiency, being capable of quickly detecting the fault reason and being convenient for the user to maintain.
Hereinafter, the stationary telephone in the present exemplary embodiment will be further described.
Wherein the base unit body 1 can be square or irregular.
In this embodiment, the base unit body 1 is provided with a handle handset 11, which is convenient for a user to listen and make a call.
In order to facilitate users to make calls and receive calls, a display screen 12 can be arranged on the front surface of the fixed telephone body 1. The display 12 may be an LED screen or a liquid crystal screen.
Because the base unit body 1 is in use, users can place the base unit body 1 in different places, and in order to enable the whole base unit body 1 to be placed more firmly, the bottom of the base unit body 1 is provided with a non-slip mat. The non-slip mat may be the same size as the bottom surface of the base unit body 1.
Referring to fig. 2, there is shown a front cross-sectional view of a fixed-line telephone of the present invention. In this embodiment, detection device 2 includes measurement ammeter 21 and restorer 22, measurement ammeter 21 is connected to restorer 22 one end, restorer 22's the other end with the side or the side of base unit body 1 are connected, the both ends of measuring ammeter 21 are equipped with gauge rod 23, the side of base unit body 1 is equipped with the removal hole, gauge rod 23 passes the removal hole gets into the inside of base unit body 1.
In this embodiment, the reset 22 may be a spring. The user can make the detection rod 23 move back and forth in the moving hole by pressing the measuring meter 21, and the measuring meter compresses the spring; when the user releases his hand, the reset device 22 can spring the measuring meter 21 open to return to its original position.
Referring to fig. 1 to 2, when a user presses the entire measuring meter, the probe pin 23 may enter the base unit 1 from the moving hole and touch the key line 14 inside the base unit 23, so that the resistance of the key line may be measured. For example, as shown in fig. 1 or 2, when the user presses the measurement meter 21 for measurement, if the measurement meter 21 displays that the resistance value of the current key line is 64 Ω, the key line is in a normal state. If the measurement ammeter 21 displays that the resistance value of the current key circuit is 0 omega, the key circuit is short-circuited and needs to be maintained; if the measurement meter 21 indicates that the current resistance value of the key circuit is infinite, the key circuit is open, and maintenance is also required.
A touch screen frame 13 and a key circuit 14 are provided inside the base unit body 1, and a schematic circuit diagram of the key circuit 14 according to the present invention is shown with reference to fig. 3.
The measurement meter 21 may be configured to measure a resistance value of the key line 14, so as to determine the state of the key line 14 through the resistance value.
In an alternative embodiment, the detecting rod 23 is inclined downward at an angle α about a central axis in the horizontal direction. The angle range of the inclination angle alpha is 5-45 degrees.
Preferably, the angle range of the inclination angle α is 30 °.
In this embodiment, the touch screen 13 is provided with a touch joint 16, and the touch screen 13 is connected with the key circuit 14 through the touch joint 16.
In order to allow the touch tab 16 to touch the key circuit 14, the horizontal movement distance of the probe rod 23 in the moving hole is S, i.e., the horizontal distance that the probe rod can move in the moving hole is S. The distance difference between the touch joint 16 and the key circuit 14 in the horizontal direction is S, and the hole depth of the connecting hole is d, wherein S is greater than S + d.
In a specific implementation, the horizontal moving distance S of the detecting rod 23 in the moving hole is equal to the resettable compression deformation distance of the repositor 22, for example, if the resettable compression deformation distance of the repositor 22 is 5mm, the horizontal moving distance of the detecting rod 23 in the moving hole is equal to 5 mm.
In order to ensure that the touch joint 16 can be in touch connection with the key circuit 14, during the movement of the detection rod 23, the distance that the detection rod 23 pushes the touch net rack 13 to descend is H, the height difference between the touch joint 16 and the key circuit 14 when the touch joint is at rest is H, H is greater than H, and H is less than the horizontal movement distance S tan α of the detection rod 23 in the movement hole.
In order to improve the accuracy and sensitivity of the detection, a probe is arranged at the connecting end of the touch joint 16 and the key line 14, and the touch joint 16 is connected with the key line 14 through the probe.
The probe can be electrified, can be made of materials such as a meter pen of a multimeter, and can directly detect the resistance value of a circuit.
Referring to fig. 4-5, a schematic diagram of a stationary structure of a detecting device of the present invention and a schematic diagram of a detecting structure of a detecting device of the present invention are shown, respectively. When a user pushes or presses the measuring electric meter 21 from the outside of the base unit body 1, the measuring electric meter 21 drives the detecting rod 23 to move in the moving hole and move from the outside of the base unit body 1 to the inside of the base unit body 1 along the moving hole, so that the detecting rod 23 is inserted into the connecting hole, the detecting rod 23 is connected with the touch net rack 13, the touch net rack 13 can move under the pushing of the detecting rod 23, and the touch net rack 13 also moves downwards under the pushing of the detecting rod 23 in the moving process due to the fact that the detecting rod 23 horizontally inclines downwards, and gradually approaches to the key circuit 14. Because the touch net rack 13 is pushed by the detection rod 23, the descending distance is H, and H is less than S tan α, that is, in the moving process of the detection rod 23, the user can make the touch net rack 13 descend by the distance H without pressing the measurement electric meter 21 to the limit of the resettable compression deformation of the resetter 22, and because H is greater than H, that is, under the condition that the touch net rack 13 does not need to descend by the distance H, the touch joint 16 can be connected with the key circuit 14 inside the base unit body 1, so that the measurement electric meter 21 can detect the key circuit 14.
In actual operation, if the measurement electric meter 21 measures the resistance value of the key line 14 to be infinite, it is determined that the key line is open, if the measurement electric meter 21 measures the resistance value of the key line 14 to be 0, it is determined that the key line is short, and if the measurement electric meter 21 measures the resistance value of the key line 14 to be a certain value, for example, 3 Ω, 5 Ω, 1.5 Ω, or the like, it is determined that the key line is normal.
The embodiment of the invention discloses a fixed telephone, which has a simple structure and is simple and convenient to operate, when a user finds that a key cannot be pressed or the key does not react, the key circuit can be detected by the measuring ammeter by pressing the measuring ammeter, the whole fixed telephone body does not need to be disassembled for detection, the detection efficiency is improved, the fault reason can be quickly detected, and the fixed telephone is convenient for the user to maintain.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart 1 flow or flows and/or block 1 block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart block or blocks of the flowchart 1 and/or block diagram 1.
These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart 1 flow or flows and/or block 1 block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
Claims (10)
1. A fixed telephone, comprising: the detection device is arranged on the side edge of the base machine body;
the detection device comprises a measuring ammeter and a restorer, one end of the restorer is connected with the measuring ammeter, the other end of the restorer is connected with the side edge of the base machine body, detection rods are arranged at two ends of the measuring ammeter, a moving hole is formed in the side edge of the base machine body, and the detection rods penetrate through the moving hole and enter the base machine body;
a touch net rack is arranged in the base unit body and vertically arranged above the level of a key circuit in the base unit body, an extensible member is arranged at one end of the touch net rack, the touch net rack is connected with the base unit body through the extensible member, a connecting hole is formed in the side edge of the touch net rack, and a detection rod is inserted into the connecting hole so as to be connected with the touch net rack;
the probe rod uses the axis of horizontal direction as central downward sloping, and inclination is alpha, works as the probe rod is followed it is past to remove the hole during the inside removal of base unit body, the probe rod inserts the connecting hole, and through the connecting hole will the touching rack is pulled down, so that the touching rack with the inside key circuit touching of base unit body is connected, supplies the measurement ammeter is surveyed the key circuit.
2. A fixed telephone according to claim 1, wherein the angle of inclination α is in the range of 5-45 °.
3. A fixed telephone according to claim 2, wherein the preferred angle of inclination a is 30 °.
4. The fixed-line telephone of claim 1, wherein the touch screen is provided with a touch tab, and the touch screen is connected with the key circuit through the touch tab.
5. The fixed-line telephone of claim 4, wherein the horizontal moving distance of the probe rod in the moving hole is S, the distance difference between the touch terminal and the key circuit in the horizontal direction is S, and the hole depth of the connecting hole is d, wherein S is greater than S + d.
6. The fixed-line telephone of claim 5, wherein the distance that the probe rod pushes the touch screen frame down is H, the height difference between the touch connector and the key circuit when the touch connector is at rest is H, H is greater than H, and H is less than S tan alpha.
7. The fixed-line telephone of claim 5, wherein the connection end of the touch connector and the key circuit is provided with a probe, and the touch connector is connected with the key circuit through the probe.
8. The fixed-line telephone of claim 1, wherein the base unit body is provided with a handle earpiece.
9. The fixed telephone of claim 1, wherein the base unit body is provided with a display screen.
10. The fixed telephone of claim 1, wherein the bottom of the base unit body is provided with a non-slip pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011424331.XA CN112532773B (en) | 2020-12-08 | 2020-12-08 | Fixed telephone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011424331.XA CN112532773B (en) | 2020-12-08 | 2020-12-08 | Fixed telephone |
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| Publication Number | Publication Date |
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| CN112532773A true CN112532773A (en) | 2021-03-19 |
| CN112532773B CN112532773B (en) | 2022-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011424331.XA Active CN112532773B (en) | 2020-12-08 | 2020-12-08 | Fixed telephone |
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| CN (1) | CN112532773B (en) |
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| CN110632460A (en) * | 2019-10-24 | 2019-12-31 | 杭州兔研工业设计有限公司 | Electric power inspection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2190305Y (en) * | 1994-06-11 | 1995-02-22 | 彭锦奇 | Portable inspector for electric appliances |
| JP2001197222A (en) * | 2000-01-17 | 2001-07-19 | Soft & Hard Co Ltd | Device for generating toll charging pulse |
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| CN112532773B (en) | 2022-08-19 |
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