A portable common zero detection device

Abstract

The application discloses a portable common zero detection device, which comprises a shell, a band-pass filter arranged on one side of the inside of the shell, a low-frequency signal amplifier arranged on the other side of the band-pass filter, and a microcontroller arranged on the upper side of the inside of the shell; a preamplifier installed on the middle side of the lower end of the shell, a coil installed on the lower side of the preamplifier, a fixed block fixedly installed on the outer side of the lower end of the shell, and a protection structure connected to the outer side of the fixed block; a display screen arranged on the middle side of the upper end of the shell, a transparent dustproof plate connected to the outer side of the upper end of the shell, a fixed rod connected to the outer side of the middle of the transparent dustproof plate, and a mounting rod fixedly installed on the front and back sides of the middle of the shell and connected to the outer side of the mounting rod. The application can improve the portability of the common zero detection device, improve the protection performance of the preamplifier, reduce the maintenance cost, and improve the dustproof effect of the display screen.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of device detection, in particular to a portable common zero detection device. BACKGROUND

[0002] The common zero detection device is a device for detecting when the zero line and the ground line use the same line. During use of the common zero detection device, a portable structure is needed to meet the portability requirement of the common zero detection device, thereby improving the use effect of the common zero detection device.

[0003] However, the common zero detection devices in the prior art mostly have the following deficiencies:

[0004] Firstly, the common zero detection device is carried by a fixed handle, which occupies a large range in actual use; secondly, the common zero detection device has poor protection effect on the preamplifier, which is easy to damage, thereby causing maintenance cost; in addition, the dustproof of the display screen is not convenient, thereby affecting the viewing of signal strength and channel coding. SUMMARY

[0005] The technical problem to be solved by the present application is to provide a portable common zero detection device, which can improve the portability of the common zero detection device, improve the protection performance of the preamplifier, reduce the maintenance cost, and improve the dustproof effect of the display screen.

[0006] As one aspect of the present application, a portable common zero detection device is provided, which comprises a shell, an inside one side of which is provided with a band-pass filter, and the other side of the band-pass filter is provided with a low-frequency signal amplifier, and an inside upper side of the shell is provided with a microcontroller, which is located above the band-pass filter and the low-frequency signal amplifier; further comprising:

[0007] a preamplifier, which is installed in the lower end middle side of the shell, and a coil is installed on the lower side of the preamplifier, a fixed block is fixedly installed on the lower end outside of the shell, and a protection structure is connected to the outside of the fixed block, an installation block is fixedly installed on the middle part outside of the shell, and a spring sheet is fixedly installed on the inside of the installation block;

[0008] a display screen, which is arranged on the upper end middle side of the shell, and a transparent dustproof plate is connected to the upper end outside of the shell, and a fixed rod is connected to the middle part outside of the transparent dustproof plate, installation rods are fixedly installed on the front and rear sides of the middle part of the shell, and movable handles are connected to the outside of the installation rods.

[0009] Preferably, the transparent dustproof plate and the fixed rod are connected in a threaded manner, and the fixed rod is symmetrically distributed about the center line of the transparent dustproof plate.

[0010] Preferably, the transparent dustproof plate is connected with the display screen in a pasting manner.

[0011] Preferably, the movable handle is connected with the mounting rod in a rotating manner, and the movable handle has a U-shaped structure in cross section.

[0012] Preferably, the movable handle is connected with the mounting block in a clamping manner, and the movable handle is connected with the elastic sheet in a pasting manner.

[0013] Preferably, the protective structure comprises an adapter block, which is installed on the outer side of the fixed block, and the inner side of the adapter block is fixedly connected with a protective plate, and the outer side of the adapter block is installed with a limiting rod.

[0014] Preferably, the adapter block is connected with the fixed block in a clamping manner, and the fixed block is symmetrically distributed about the center line of the preamplifier.

[0015] Preferably, the adapter block is connected with the limiting rod in a threaded manner and plays a fixing role on the protective plate.

[0016] The embodiment of the present application has the following beneficial effects:

[0017] The present application provides a portable common zero detection device, which is convenient to carry, can reduce maintenance cost by protecting the preamplifier, and has good dustproof effect on the display screen.

[0018] In the present application, the protective plate is installed on the outer side of the preamplifier, so that the protective plate drives the adapter block to be clamped and installed on the outer side of the fixed block; by rotating the limiting rod, the limiting rod is threadedly connected on the outer side of the middle part of the adapter block, so that the limiting rod is threadedly connected on the outer side of the fixed block, which is convenient for fixing the protective plate and protecting the preamplifier.

[0019] In the present application, by pulling the movable handle, the movable handle is rotated upward on the outer side of the mounting rod, so that the movable handle pushes the elastic sheet to slide outward, and then the movable handle is separated on the inner side of the mounting block, so that the movable handle is rotated to the upper side of the shell, and then the movable handle is held by hand, which is convenient for carrying the shell.

[0020] In the present application, the transparent dustproof plate is connected with the display screen in a pasting manner, which is convenient for dustproof of the display screen; by rotating the fixing rod, the fixing rod is threadedly connected on the outer side of the middle part of the transparent dustproof plate, so that the fixing rod is separated on the outer side of the upper end of the shell, and then the transparent dustproof plate is pulled upward, so that the transparent dustproof plate is separated on the upper end of the shell, which is convenient for replacing the transparent dustproof plate. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings obtained according to these drawings without creative labor are still within the scope of the present application.

[0022] Figure 1 A schematic diagram of the overall cross-sectional structure of the connection between the shell and the band-pass filter in the portable common-zero detection device provided by the present application is shown in the figure.

[0023] Figure 2 The present application provides Figure 1 A schematic diagram of the enlarged structure of part A in the present application is shown in the figure.

[0024] Figure 3 The present application provides Figure 1 A schematic diagram of the enlarged structure of part B in the present application is shown in the figure.

[0025] Figure 4 A schematic diagram of the overall cross-sectional structure of the connection between the shell and the preamplifier in the present application is shown in the figure.

[0026] Figure 5 The present application provides Figure 4 A schematic diagram of the enlarged structure of part C in the present application is shown in the figure.

[0027] Figure 6 A schematic diagram of the overall cross-sectional structure of the connection between the shell and the mounting rod in the present application is shown in the figure.

[0028] In the figure: 1, shell; 2, band-pass filter; 3, low-frequency signal amplifier; 4, microcontroller; 5, preamplifier; 6, coil; 7, fixed block; 8, display screen; 9, transparent dustproof plate; 10, mounting block; 11, movable handle; 12, connecting block; 13, limiting rod; 14, protective plate; 15, elastic sheet; 16, fixed rod; 17, mounting rod. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings.

[0030] As Figure 1 shown, a schematic diagram of the overall cross-sectional structure of the connection between the shell and the band-pass filter in the portable common-zero detection device provided by the present application is shown in the figure, and reference is also made to Figures 2 to 6As shown, in the present embodiment, the present application provides a portable common zero detection device, which comprises: a housing 1, a band-pass filter 2 arranged on one side of the inside of the housing 1, a low-frequency signal amplifier 3 arranged on the other side of the band-pass filter 2, and a microcontroller 4 arranged on the upper side of the inside of the housing 1, the microcontroller 4 being located above the band-pass filter 2 and the low-frequency signal amplifier 3.

[0031] In actual application, the ultra-low frequency signal transmitter is placed in the power supply line and loads the ultra-low frequency signal in the power supply cable; the housing 1 is placed at the cable along the way and the cable into the house, the signal source data is encoded by the ultra-low frequency signal transmitter, the output channel is encoded, and the signal is emitted, the space radio signal is received by the coil 6, after the preamplifier 5, the band-pass filter 2 is accessed, and then the low-frequency signal amplifier 3, the microcontroller 4 is sampled, the effective signal is demodulated, the encoding of the transmitter is restored, and the signal strength is displayed on the display screen 8, and the channel number is reserved;

[0032] More specifically, the preamplifier 5 is installed in the lower end of the housing 1, the coil 6 is installed on the lower side of the preamplifier 5, the fixed block 7 is fixedly installed on the lower end of the housing 1, the protective structure is connected to the outer side of the fixed block 7, the mounting block 10 is fixedly installed on the outer side of the middle part of the housing 1, and the elastic sheet 15 is fixedly installed on the inner side of the mounting block 10. The protective structure is installed on the outer side of the preamplifier 5, and the protective structure is installed on the outer side of the fixed block 7. Rotate the protective structure to connect the protective structure on the outer side of the fixed block 7 to protect the preamplifier 5.

[0033] The display screen 8 is arranged on the upper end of the housing 1, and the transparent dustproof plate 9 is connected to the outer side of the upper end of the housing 1, and the fixed rod 16 is connected to the outer side of the middle part of the transparent dustproof plate 9. The mounting rod 17 is fixedly installed on the front and rear sides of the middle part of the housing 1, and the movable handle 11 is connected to the outer side of the mounting rod 17. Pull the movable handle 11 to rotate the movable handle 11 upwardly outside the mounting rod 17, so that the movable handle 11 pushes the elastic sheet 15 to slide outwardly, and then the movable handle 11 is separated from the inside of the mounting block 10, so that the movable handle 11 is rotated to the upper side of the housing 1. Hold the movable handle 11 with your hand to facilitate carrying the housing 1. The transparent dustproof plate 9 connected to the upper side of the display screen 8 facilitates dustproof of the display screen 8. Rotate the fixed rod 16 to connect the fixed rod 16 to the outer side of the middle part of the transparent dustproof plate 9, so that the fixed rod 16 slides outwardly on the outer side of the middle part of the transparent dustproof plate 9, and then the fixed rod 16 is separated from the upper end of the housing 1. Pull the transparent dustproof plate 9 upwardly to separate the transparent dustproof plate 9 from the upper end of the housing 1, so that the transparent dustproof plate 9 is replaced.

[0034] In use of the common zero detection device, specificallyFigure 1 And Figure 2 In the middle, the ultra-low frequency signal transmitter is placed in the power supply line to load the ultra-low frequency signal in the power supply cable, and the shell 1 is placed at the cable along the way and the cable at home. The signal source data is encoded by the ultra-low frequency signal transmitter, and the output channel is encoded and signals are sent. The space radio signal is received by the coil 6, and after the preamplifier 5, it is connected to the band-pass filter 2, and then enters the low-frequency signal amplifier 3. The microcontroller 4 samples and demodulates the effective signal to restore the transmitter's encoding and display the signal strength on the display screen 8. The channel number is reserved, the adapter block 12 is connected to the fixed block 7 in a clamping manner, and the fixed block 7 is symmetrically distributed about the center line of the preamplifier 5. The protective plate 14 is installed on the outside of the preamplifier 5, and the protective plate 14 drives the adapter block 12 to be clamped and installed on the outside of the fixed block 7. The adapter block 12 and the limiting rod 13 are connected in a threaded manner and play a fixing role for the protective plate 14. Rotating the limiting rod 13 makes the limiting rod 13 threadedly connected on the outside of the middle of the adapter block 12, so that the limiting rod 13 is threadedly connected on the outside of the fixed block 7, which is convenient for fixing the protective plate 14 and protecting the preamplifier 5;

[0035] Specifically as shown in Figure 3 、 Figure 4 And Figure 6 The movable handle 11 and the mounting rod 17 are connected in a rotating manner, and the cross-sectional shape of the movable handle 11 is a "U" shaped structure. Pulling the movable handle 11 makes the movable handle 11 rotate upwards on the outside of the mounting rod 17. The movable handle 11 and the mounting block 10 are connected in a clamping manner, and the movable handle 11 and the elastic sheet 15 are connected in a close manner, so that the movable handle 11 pushes the elastic sheet 15 to slide outward, and then the movable handle 11 separates on the inside of the mounting block 10. The movable handle 11 is rotated to the upper side of the shell 1, and then the movable handle 11 is held by hand, which is convenient for carrying the shell 1;

[0036] Specifically as shown in Figure 3 、 Figure 4 And Figure 5As shown, since the transparent dustproof plate 9 is connected with the display screen 8 in a pasting mode, the transparent dustproof plate 9 pasted and connected on the upper side of the display screen 8 can conveniently prevent dust from the display screen 8, the transparent dustproof plate 9 is connected with the fixed rod 16 in a screwing mode, the fixed rod 16 is symmetrically distributed about the center line of the transparent dustproof plate 9, the fixed rod 16 is screwed on the outer side of the middle part of the transparent dustproof plate 9 by rotating the fixed rod 16, so that the fixed rod 16 slides outwards on the outer side of the middle part of the transparent dustproof plate 9, and then the fixed rod 16 is separated on the upper end of the shell 1, the transparent dustproof plate 9 is separated on the upper end of the shell 1 by pulling upwards, and the transparent dustproof plate 9 is conveniently replaced.

[0037] The embodiment of the present application has the following beneficial effects:

[0038] The present application provides a portable common zero detection device, which is convenient to carry, can reduce maintenance cost by protecting the preamplifier, and has good dustproof effect on the display screen.

[0039] In the present application, the protective plate is installed on the outer side of the preamplifier, and the abutment block is clamped and installed on the outer side of the fixed block by the protective plate; the limiting rod is screwed on the outer side of the middle part of the abutment block by rotating the limiting rod, so that the limiting rod is screwed on the outer side of the fixed block, the protective plate is conveniently fixed, and the preamplifier is protected.

[0040] In the present application, the movable handle is pulled upwards on the outer side of the mounting rod to rotate, so that the movable handle pushes the elastic sheet to slide outwards, and then the movable handle is separated on the inner side of the mounting block, the movable handle is rotated to the upper side of the shell, and the movable handle is held by hand to conveniently carry the shell.

[0041] In the present application, the transparent dustproof plate pasted and connected on the upper side of the display screen can conveniently prevent dust from the display screen, the fixed rod is screwed on the outer side of the middle part of the transparent dustproof plate by rotating the fixed rod, so that the fixed rod slides outwards on the outer side of the middle part of the transparent dustproof plate, and then the fixed rod is separated on the upper end of the shell, the transparent dustproof plate is separated on the upper end of the shell by pulling upwards, and the transparent dustproof plate is conveniently replaced.

[0042] The above only discloses a preferred embodiment of the present application, and of course cannot limit the scope of the present application, so equivalent changes made according to the claims of the present application still fall within the scope of the present application.

Claims

1. A portable zero-detection device, comprising a housing (1), characterized in that, A bandpass filter (2) is provided on one side of the interior, and a low-frequency signal amplifier (3) is provided on the other side of the bandpass filter (2). A microcontroller (4) is provided on the upper side of the interior of the housing (1), and the microcontroller (4) is located above the bandpass filter (2) and the low-frequency signal amplifier (3). Further includes: A preamplifier (5) is installed on the lower middle side of the housing (1), and a coil (6) is installed on the lower side of the preamplifier (5). A fixing block (7) is fixedly installed on one outer side of the lower end of the housing (1), and a protective structure is connected to the outer side of the fixing block (7). A mounting block (10) is fixedly installed on the outer side of the middle part of the housing (1), and a spring piece (15) is fixedly installed on the inner side of the mounting block (10). The display screen (8) is located on the upper middle side of the outer shell (1), and the upper end of the outer shell (1) is connected to a transparent dustproof plate (9) on the outside of the display screen (8). A fixing rod (16) is connected to the outer side of the middle part of the transparent dustproof plate (9). Mounting rods (17) are fixedly installed on both the front and rear sides of the middle part of the outer shell (1), and a movable handle (11) is connected to the outer side of the mounting rod (17). The movable handle (11) is connected to the mounting block (10) by a snap-fit ​​method, and the movable handle (11) is connected to the spring piece (15) by a fitting method.

2. The apparatus according to claim 1, characterized in that, The transparent dustproof plate (9) and the fixing rod (16) are connected by threads, and the fixing rod (16) is symmetrically distributed about the center line of the transparent dustproof plate (9).

3. The apparatus according to claim 2, characterized in that, The transparent dustproof plate (9) and the display screen (8) are connected by a bonding method.

4. The apparatus according to claim 3, characterized in that, The movable handle (11) and the mounting rod (17) are connected by rotation, and the cross-sectional shape of the movable handle (11) is a "U" shape.

5. The apparatus according to any one of claims 1 to 4, characterized in that, The protective structure includes a connecting block (12), which is installed on the outside of the fixed block (7), and a protective plate (14) is fixedly connected to the inside of the connecting block (12), and a limit rod (13) is installed on the outside of the connecting block (12).

6. The apparatus according to claim 5, characterized in that: The connecting block (12) and the fixing block (7) are connected by a snap-fit ​​method, and the fixing block (7) is symmetrically distributed about the center line of the preamplifier (5).

7. The apparatus according to claim 6, characterized in that: The connecting block (12) and the limiting rod (13) are connected by threads and play a role in fixing the protective plate (14).

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