阅读说明：本技术 一种具有无线传输功能的便携式万用表 (Portable universal meter with wireless transmission function ) 是由 徐桂培 谭武英 赖洁文 张国龙 卢毅锋 于 2021-08-17 设计创作，主要内容包括：本发明提供了一种具有无线传输功能的便携式万用表,属于万用表技术领域。该万用表包括万用表本体、若干个表笔、后台终端、安装板和支撑板；万用表本体的背面顶部与安装板的一端铰接,背面底部与支撑板的一端铰接；安装板外表面设置有第一固定块,第一固定块上开设有固定槽,安装板内表面开设有收纳槽,收纳槽的形状与支撑板的形状适配；支撑板的另一端与收纳槽的内壁表面滑动连接；若干个表笔均卡接在固定槽内；表笔和万用表内均设置有无线传输模块和数据接收模块；后台终端与万用表本体之间信号连接。本发明解决了使用常规万用表对交直流设备进行测量时可能存在的距离不够而导致测量工作麻烦并且万用表支撑不方便的问题。(The invention provides a portable multimeter with a wireless transmission function, and belongs to the technical field of multimeters. The universal meter comprises a universal meter body, a plurality of meter pens, a background terminal, a mounting plate and a support plate; the top of the back of the multimeter body is hinged with one end of the mounting plate, and the bottom of the back is hinged with one end of the supporting plate; the outer surface of the mounting plate is provided with a first fixing block, a fixing groove is formed in the first fixing block, an accommodating groove is formed in the inner surface of the mounting plate, and the shape of the accommodating groove is matched with that of the support plate; the other end of the supporting plate is in sliding connection with the surface of the inner wall of the accommodating groove; the meter pens are clamped in the fixing grooves; a wireless transmission module and a data receiving module are arranged in the meter pen and the universal meter; and the background terminal is in signal connection with the multimeter body. The invention solves the problems that the measurement work is troublesome and the universal meter is inconvenient to support because the distance is not enough when the conventional universal meter is used for measuring alternating current and direct current equipment.)

1. A portable multimeter having wireless transmission capability, comprising: the universal meter comprises a universal meter body, a plurality of meter pens, a background terminal, a mounting plate and a support plate;

the top of the back of the multimeter body is hinged with one end of the mounting plate, and the bottom of the back is hinged with one end of the supporting plate;

a first fixing block is arranged on one side, away from the multimeter body, of the mounting plate, a fixing groove is formed in the first fixing block, an accommodating groove is formed in one side, close to the multimeter body, of the mounting plate, and the shape of the accommodating groove is matched with that of the supporting plate;

the other end of the supporting plate is in sliding connection with the inner wall surface of the accommodating groove;

the meter pens are clamped in the fixing grooves;

a first wireless transmission module and a first data receiving module are arranged in each of the plurality of meter pens, a second wireless transmission module and a second data receiving module are arranged in the multimeter body, the first wireless transmission module is in signal connection with the second data receiving module, and the second wireless transmission module is in signal connection with the first data receiving module;

the background terminal is in signal connection with the multimeter body and used for storing and analyzing the measurement data of the meter pen and returning the analysis result to the multimeter body.

2. The portable multimeter of claim 1, wherein a first circuit board is disposed in the stylus, the first wireless transmission module and the first data receiving module are disposed on the first circuit board, and the first circuit board further comprises:

the device comprises a data acquisition module, a first signal enhancement module and a first display module;

the output end of the data acquisition module is connected with the input end of the first wireless transmission module, the output end of the first wireless transmission module is connected with the input end of the first signal enhancement module, and the first signal enhancement module is in signal connection with the second data receiving module;

the output end of the first data receiving module is connected with the input end of the first display module.

3. The portable multimeter of claim 1, wherein a second circuit board is disposed inside the multimeter body, the second wireless transmission module and the second data receiving module are disposed on the second circuit board, and the second circuit board further comprises:

the second signal enhancement module, the second display module, the central control system and the data processing unit;

the output end of the second data receiving module is connected with the input end of the data processing unit, the data processing unit is in bidirectional electric connection with the central control system so that the data processing unit and the central control system can perform bidirectional data transmission, the output end of the central control system is respectively connected with the input end of the second display module and the input end of the second wireless transmission module, the output end of the second wireless transmission module is connected with the input end of the second signal enhancement module, and the second signal enhancement module is in signal connection with the first data receiving module;

and the central control system is in signal connection with the background terminal.

4. The portable multimeter of claim 3, wherein the data processing unit specifically comprises:

the data acquisition port, the data processing module and the data transmission module;

the data collection port is in bidirectional electrical connection with the data processing module, and the data processing module is in bidirectional electrical connection with the data transmission module;

the input end of the data collection port is used as the input end of the data processing unit, and the data transmission module is in bidirectional electric connection with the central control system.

5. The portable multimeter of claim 3, wherein the background terminal specifically comprises:

the system comprises a data analysis unit, a database and a storage module;

the data analysis unit is in signal connection with the database and is used for analyzing the measurement data of the meter pen and returning an analysis result to the database;

the database is respectively in signal connection with the central control system and the storage module and is used for returning the analysis result to the central control system;

the storage module is used for storing the measurement data of the meter pen.

6. The portable multimeter of claim 5, wherein the data analysis unit specifically comprises:

the data analysis port, the data feedback module and the data comparison module;

the data analysis port is in bidirectional electrical connection with the data feedback module, and the data feedback module is in bidirectional electrical connection with the data comparison module;

the data analysis port is in signal connection with the database.

7. The portable multimeter of claim 1, wherein fixing pieces are arranged on two side faces of the multimeter body, rubber heads are arranged on inner sides of the fixing pieces, circular grooves are formed in two side faces of the mounting plate, and the rubber heads are embedded into the circular grooves when the mounting plate is attached to the back face of the multimeter body.

8. The portable multimeter of claim 1, wherein a protective box is disposed at a bottom of a side of the mounting plate away from the multimeter body, the protective box being configured to protect a tip of the stylus.

9. The portable multimeter with the wireless transmission function according to claim 1, wherein a second fixing block is arranged at one end, close to the multimeter body, of the supporting plate, a clamping groove is formed in the bottom of the multimeter body, and the second fixing block is clamped with an inner wall of the clamping groove.

10. The portable multimeter having a wireless transmission function according to claim 1 or 9, wherein a mounting groove is formed at a bottom of the support plate, a non-slip mat is arranged in the mounting groove, the non-slip mat is provided with non-slip lines, and the non-slip mat is made of rubber.

Technical Field

The invention belongs to the technical field of multimeters, and particularly relates to a portable multimeter with a wireless transmission function.

Background

Multimeters, also known as multiplex meters, multi-purpose meters, triple meters, multi-purpose meters, etc., are indispensable measurement instruments for power electronics and other departments, and generally aim to measure voltage, current and resistance. The multimeter is divided into a pointer multimeter and a digital multimeter according to the display mode. The universal meter can measure direct current, direct voltage, alternating current, alternating voltage, resistance, audio level and the like, and can also measure alternating current, capacitance, inductance, parameters (such as beta) of a semiconductor and the like.

At present, most of existing alternating current and direct current equipment are independent intervals, for example, cables between a protection measurement and control device and the protection measurement and control device are supplied with respective devices independently for use, the independent intervals can break down in long-term operation of the device, the phenomenon that the distance is insufficient can be caused by adopting a conventional universal meter to measure, the measurement work of operators is troublesome, the existing universal meter is inconvenient to support the universal meter, and the operators are caused to be inconvenient to check and record data.

Disclosure of Invention

In view of the above, the present invention is directed to solve the problems that the measurement work is troublesome and the multimeter is inconvenient to support due to the insufficient distance when the conventional multimeter is used for measuring ac/dc equipment.

In order to solve the above technical problem, the present invention provides a portable multimeter having a wireless transmission function, comprising:

the universal meter comprises a universal meter body, a plurality of meter pens, a background terminal, a mounting plate and a support plate;

the top of the back of the multimeter body is hinged with one end of the mounting plate, and the bottom of the back is hinged with one end of the supporting plate;

a first fixing block is arranged on one side, away from the multimeter body, of the mounting plate, a fixing groove is formed in the first fixing block, an accommodating groove is formed in one side, close to the multimeter body, of the mounting plate, and the shape of the accommodating groove is matched with that of the supporting plate;

the other end of the supporting plate is in sliding connection with the surface of the inner wall of the accommodating groove;

the meter pens are clamped in the fixing grooves;

a first wireless transmission module and a first data receiving module are arranged in each of the plurality of meter pens, a second wireless transmission module and a second data receiving module are arranged in the multimeter body, the first wireless transmission module is in signal connection with the second data receiving module, and the second wireless transmission module is in signal connection with the first data receiving module;

and the background terminal is in signal connection with the multimeter body and is used for storing and analyzing the measurement data of the meter pen and returning the analysis result to the multimeter body.

Further, be provided with first circuit board in the pen-shape metre, first wireless transmission module and first data receiving module all set up on first circuit board, and first circuit board still includes:

the device comprises a data acquisition module, a first signal enhancement module and a first display module;

the output end of the data acquisition module is connected with the input end of the first wireless transmission module, the output end of the first wireless transmission module is connected with the input end of the first signal enhancement module, and the first signal enhancement module is in signal connection with the second data receiving module;

the output end of the first data receiving module is connected with the input end of the first display module.

Further, this internal second circuit board that is provided with of universal meter, second wireless transmission module and second data receiving module all set up on the second circuit board, and the second circuit board still includes:

the second signal enhancement module, the second display module, the central control system and the data processing unit;

the output end of the second data receiving module is connected with the input end of the data processing unit, the data processing unit is in bidirectional electric connection with the central control system so that the data processing unit and the central control system can carry out bidirectional data transmission, the output end of the central control system is respectively connected with the input end of the second display module and the input end of the second wireless transmission module, the output end of the second wireless transmission module is connected with the input end of the second signal enhancement module, and the second signal enhancement module is in signal connection with the first data receiving module;

the central control system is in signal connection with the background terminal.

Further, the data processing unit specifically includes:

the data acquisition port, the data processing module and the data transmission module;

the data collection port is in bidirectional electric connection with the data processing module, and the data processing module is in bidirectional electric connection with the data transmission module;

the input end of the data collection port is used as the input end of the data processing unit, and the data transmission module is in bidirectional electric connection with the central control system.

Further, the background terminal specifically includes:

the system comprises a data analysis unit, a database and a storage module;

the data analysis unit is in signal connection with the database and is used for analyzing the measurement data of the stylus and returning an analysis result to the database;

the database is respectively in signal connection with the central control system and the storage module and is used for returning the analysis result to the central control system;

the storage module is used for storing the measurement data of the meter pen.

Further, the data analysis unit specifically includes:

the data analysis port, the data feedback module and the data comparison module;

the data analysis port is in bidirectional electric connection with the data feedback module, and the data feedback module is in bidirectional electric connection with the data comparison module;

the data analysis port is in signal connection with the database.

Further, the both sides side of universal meter body all is provided with the stationary blade, and the stationary blade inboard is provided with the rubber head, and the circular slot has been seted up all to the both sides side of mounting panel, and when the back of mounting panel laminating universal meter body, in the rubber head embedding circular slot.

Furthermore, the bottom of the side, away from the universal meter body, of the mounting plate is provided with a protection box, and the protection box is used for protecting the pen point of the meter pen.

Further, the one end that the backup pad is close to the universal meter body is provided with the second fixed block, and the draw-in groove has been seted up to universal meter body bottom, the inner wall joint of second fixed block and draw-in groove.

Further, the mounting groove has been seted up to the backup pad bottom, is equipped with the slipmat in the mounting groove, and the slipmat is equipped with anti-skidding line, and the slipmat is made by the rubber material.

In summary, the invention provides a portable multimeter with a wireless transmission function, which comprises a multimeter body and a plurality of multimeter pens, wherein a first wireless transmission module and a first data receiving module are arranged in the multimeter pens, a second wireless transmission module and a second data receiving module are arranged in the multimeter body, and wireless transmission of data between the multimeter pens and the multimeter is realized through the data transmission capability of the wireless transmission module and the data receiving module, so that an operator can use the multimeter pens to cross a plurality of intervals to measure potentials at two ends, thereby facilitating subsequent recording work and solving the problem of insufficient distance possibly existing when the existing multimeter is used for measurement. Meanwhile, the upper end and the lower end of the universal meter provided by the invention are respectively hinged with the mounting plate and the supporting plate, and one end of the supporting plate can slide along the inner wall of the accommodating groove on the back surface of the mounting plate. When the universal meter is not used, the mounting plate is attached to the back of the universal meter, and the supporting plate can be placed in the accommodating groove; and when using the universal meter, in order to support the universal meter, can expand the mounting panel to also expand the backup pad to certain angle, make universal meter, mounting panel and backup pad three constitute a stable triangle-shaped structure, can be convenient for operating personnel like this look over the content on the universal meter, improve the operating efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic side view of a portable multimeter having a wireless transmission function according to an embodiment of the present invention;

FIG. 2 is a side view of a portable multimeter having wireless transmission capability according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a back-side perspective structure of a portable multimeter having a wireless transmission function according to an embodiment of the present invention;

FIG. 4 is a top view of a portable multimeter having wireless transmission capability according to an embodiment of the present invention;

fig. 5 is a schematic perspective view of a first circuit board according to an embodiment of the present invention;

fig. 6 is a schematic perspective view of a second circuit board according to an embodiment of the present invention;

FIG. 7 is a schematic block diagram of data transmission of a portable multimeter having wireless transmission capability provided by an embodiment of the present invention;

FIG. 8 is a block diagram of a data processing unit according to an embodiment of the present invention;

fig. 9 is a block diagram of a data analysis unit according to an embodiment of the present invention.

In the drawings: 1-a multimeter body, 2-a mounting plate, 3-a first fixing block, 4-a fixing groove, 5-a meter pen, 6-a containing groove, 7-a support plate, 8-a first circuit board, 9-a data acquisition module, 10-a first wireless transmission module, 11-a first signal enhancement module, 12-a first data receiving module, 13-a first display module, 14-a second circuit board, 15-a second data receiving module, 16-a data processing unit, 161-a data collection port, 162-a data processing module, 163-a data transmission module, 17-a central control system, 18-a second display module, 19-a second wireless transmission module, 20-a second signal enhancement module, 21-a fixing plate and 22-a rubber head, 23-circular groove, 24-second fixed block, 25-clamping groove, 26-mounting groove, 27-non-slip mat, 28-protective box and 29-control button.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. 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, the present embodiment provides a portable multimeter with wireless transmission function, including:

the universal meter comprises a universal meter body 1, a plurality of meter pens 5, a background terminal, a mounting plate 2 and a supporting plate 7;

the back top of multimeter body 1 is articulated with the one end of mounting panel 2, and the back bottom is articulated with the one end of backup pad 7.

One side that universal meter body 1 was kept away from to mounting panel 2 is provided with first fixed block 3, has seted up fixed slot 4 on the first fixed block 3, and mounting panel 2 has been close to universal meter body 1's one side and has seted up and has accomodate groove 6, accomodates the shape of groove 6 and the shape adaptation of backup pad 7.

It should be noted that the fixing grooves 4 are formed in the first fixing block 3 to mainly fix the pens 5, and therefore, the number of the fixing grooves 4 should be set appropriately, that is, a certain number of the pens 5 can be fixed. And because the meter pens 5 are used in pairs during measurement, the number of the fixing grooves 4 should be set to be even.

The other end of the supporting plate 7 is slidably connected to the inner wall surface of the receiving groove 6.

It should be noted that support plate 7 is mainly used for supporting multimeter body 1 in a use state. When the mounting plate 2 rotates, one end of the supporting plate 7 slides up and down along the inner wall of the accommodating groove 6, and when the mounting plate 2 rotates inwards to be attached to the back surface of the multimeter, one end of the supporting plate 7 slides upwards to the upper end of the accommodating groove 6 and the supporting plate 7 is embedded into the accommodating groove 6; when the mounting plate 2 rotates outwards to a direction away from the multimeter body 1, one end of the supporting plate 7 slides downwards until abutting against the bottom end of the accommodating groove 6, and a stable triangular structure is formed among the multimeter body 1, the mounting plate 2 and the supporting plate 7.

A plurality of meter pens 5 are clamped in the fixing grooves 4.

It should be noted that, because the two meter pens 5 need to be used in a pairwise manner during measurement, when the meter pens 5 are fixed, the two paired meter pens 5 are adjacently clamped in the fixing grooves 4, and corresponding marks can be made on the meter pens 5, so that an operator can identify the paired meter pens 5 from the plurality of meter pens 5.

All be provided with first wireless transmission module 10 and first data receiving module 12 in a plurality of pen-shape metre 5, be provided with second wireless transmission module 19 and second data receiving module 15 in the universal meter body 1, first wireless transmission module 10 and second data receiving module 15 signal connection, second wireless transmission module 19 and first data receiving module 12 signal connection.

It can be understood that the test pens 5 transmit the measured data to the multimeter through the wireless transmission function between the wireless transmission module and the data receiving module, and the multimeter returns the result of analyzing the measured data to each test pen 5 through the wireless transmission function, so as to conveniently notify the operator corresponding to each test pen 5.

Signal connection between backstage terminal and the universal meter body 1, backstage terminal are used for storing and analyzing the measured data of pen-shape metre 5 and return the analysis result to universal meter body 1.

It should be noted that, because the multimeter itself does not have the data analysis capability, a background terminal is added to analyze the measurement data of the meter pen 5, and whether the data measured this time is inconsistent is determined according to the data stored before the background terminal, so as to determine whether a fault occurs at the measurement position of the meter pen 5.

The embodiment provides a portable multimeter with wireless transmission function, including multimeter body 1 and a plurality of pen 5, set up first wireless transmission module 10 and first data receiving module 12 in pen 5, set up second wireless transmission module 19 and second data receiving module 15 in multimeter body 1, data transmission ability through wireless transmission module and data receiving module, realize the wireless transmission of data between pen 5 and the multimeter, and then operating personnel can use multimeter pen 5 to stride across the electric potential at a plurality of intervals and measure both ends, make things convenient for follow-up record work, thereby solved and used the problem that the distance that probably exists is not enough when wanting the multimeter to measure. Meanwhile, the upper end and the lower end of the universal meter provided by the invention are respectively hinged with the mounting plate 2 and the supporting plate 7, and one end of the supporting plate 7 can slide along the inner wall of the accommodating groove 6 on the back surface of the mounting plate 2. When the universal meter is not used, the mounting plate 2 is attached to the back of the universal meter, and the support plate 7 can be placed in the accommodating groove 6; and when using the universal meter, for the convenience support universal meter, can expand mounting panel 2 to also expand backup pad 7 to certain angle, make universal meter, mounting panel 2 and backup pad 7 three constitute a stable triangle-shaped structure, the content on the universal meter can be looked over to the operating personnel of being convenient for like this, improves the operating efficiency.

The above is a detailed description of one embodiment of the portable multimeter having a wireless transmission function of the present application, and another embodiment of the portable multimeter having a wireless transmission function of the present application is described in detail below.

Referring to fig. 2-9, the present embodiment provides a portable multimeter with wireless transmission function, comprising:

the universal meter comprises a universal meter body 1, a plurality of meter pens 5, a background terminal, a mounting plate 2 and a supporting plate 7;

the back top of multimeter body 1 is articulated with the one end of mounting panel 2, and the back bottom is articulated with the one end of backup pad 7.

One side that universal meter body 1 was kept away from to mounting panel 2 is provided with first fixed block 3, has seted up fixed slot 4 on the first fixed block 3, and mounting panel 2 has been close to universal meter body 1's one side and has seted up and has accomodate groove 6, accomodates the shape of groove 6 and the shape adaptation of backup pad 7.

Since the mounting plate 2 is hinged to the top of the multimeter as shown in fig. 2, circular grooves 23 may be provided on the side surfaces on both sides of the mounting plate 2, fixing pieces 21 may be provided on the side surfaces on both sides of the multimeter, and rubber tips 22 may be provided inside the fixing pieces 21, in order to enable the mounting plate 2 to be fastened to the back of the multimeter in a stored state. When the mounting plate 2 is rotated to fit the back of the multimeter, the rubber head 22 is inserted into the circular groove 23 so that the mounting plate 2 can be fastened to the back of the multimeter. When the mounting plate 2 needs to be unfolded, the rubber head 22 is separated from the circular groove 23 by the elasticity of the rubber head. Because the universal meter is frequently used, the worn rubber head 22 can be conveniently replaced by adopting the mode that the rubber head 22 is matched with the circular groove 23, and the cost is lower.

The other end of the supporting plate 7 is slidably connected to the inner wall surface of the receiving groove 6.

It should be noted that, as shown in fig. 4, since the supporting plate 7 plays a role of supporting the multimeter, in order to enhance the stabilizing effect of the triangle when the supporting plate 7 is unfolded, a second fixing block 24 may be disposed at one end of the supporting plate 7 close to the multimeter, a clamping groove 25 with a shape adapted to the second fixing block 24 is disposed at a position at the bottom of the multimeter corresponding to the second fixing block 24, and when the supporting plate 7 is completely unfolded, the second fixing block 24 is clamped in the clamping groove 25. Because draw-in groove 25 plays certain spacing fastening effect to second fixed block 24, so can further strengthen the stability of triangle structure, increase the supporting role to the universal meter.

In addition, as shown in fig. 3, in order to prevent the multimeter from sliding, a mounting groove 26 may be formed in the bottom of the support plate 7, a non-slip mat 27 is arranged in the mounting groove 26, the non-slip mat 27 is provided with non-slip lines, and the non-slip mat 27 may be made of rubber.

A plurality of meter pens 5 are clamped in the fixing grooves 4.

It should be noted that, as shown in fig. 3, since the stylus 5 is fixed on the surface of the mounting plate 2, in order to prevent the stylus 5 from being damaged due to the exposure of the stylus 5 to the outside during carrying, a protection box 28 may be disposed at the bottom of the surface of the mounting plate 2 where the stylus 5 is fixed, and the protection box 28 is used for protecting the pen point of the stylus 5.

All be provided with first wireless transmission module 10 and first data receiving module 12 in a plurality of pen-shape metre 5, be provided with second wireless transmission module 19 and second data receiving module 15 in the universal meter body 1, first wireless transmission module 10 and second data receiving module 15 signal connection, second wireless transmission module 19 and first data receiving module 12 signal connection.

As shown in fig. 5 and fig. 7, in the specific implementation of the present embodiment, a plurality of meter pens 5 are each provided with a first circuit board 8, and a first wireless transmission module 10 and a first data receiving module 12 are each provided on the first circuit board 8. Wherein the first circuit board 8 further comprises: the device comprises a data acquisition module 9, a first signal enhancement module 11 and a first display module 13;

the output end of the data acquisition module 9 is connected with the input end of the first wireless transmission module 10, the output end of the first wireless transmission module 10 is connected with the input end of the first signal enhancement module 11, and the first signal enhancement module 11 is in signal connection with the second data receiving module 15; the output end of the first data receiving module 12 is connected with the input end of the first display module 13.

It is understood that the data acquisition module 9 is used for receiving the measurement data of the meter pen 5 and transmitting the data to the first wireless transmission module 10, and in order to resist signal attenuation, the data of the first wireless transmission module 10 is transmitted to the multimeter through the first signal enhancement module 11. The first data receiving module 12 is configured to receive data sent by the multimeter and send the data to the first display module 13, and the first display module 13 performs corresponding display according to the data so as to facilitate reading of the data by a measurement person using the corresponding stylus 5.

In addition, as shown in fig. 6 and 7, a second circuit board 14 is arranged in multimeter body 1, a second wireless transmission module 19 and a second data receiving module 15 are both arranged on second circuit board 14, and second circuit board 14 further includes:

a second signal enhancement module 20, a second display module 18, a central control system 17 and a data processing unit 16;

the output end of the second data receiving module 15 is connected with the input end of the data processing unit 16, the data processing unit 16 is in bidirectional electrical connection with the central control system 17, so that the data processing unit 16 and the central control system 17 perform bidirectional data transmission, the output end of the central control system 17 is respectively connected with the input end of the second display module 18 and the input end of the second wireless transmission module 19, the output end of the second wireless transmission module 19 is connected with the input end of the second signal enhancement module 20, the second signal enhancement module 20 is in signal connection with the first data receiving module 12, and the central control system 17 is in signal connection with the background terminal.

It will be appreciated that the second data receiving module 15 receives the measurement data transmitted from the stylus 5 and transmits the data to the data processing unit 16. Because the test pens 5 are used in a pairwise matching manner, the multimeter receives the measurement data sent by a group of test pens 5, processes the measurement data by the data processing unit 16, associates and integrates the measurement data of the same group of test pens 5, and then transmits the associated and integrated data to the central control system 17. The central control system 17 transmits the data to the background terminal for analysis, and then transmits the analysis result to the second display module 18 and the second wireless transmission module 19, the second display module 18 displays corresponding information according to the analysis result so as to facilitate corresponding multimeter operators to read the data, and the second wireless transmission module 19 transmits the analysis result to the meter pen 5 through the second signal enhancement module 20 so that the first display module 13 of the meter pen 5 can synchronously display on the side of the meter pen 5 according to the analysis result. Therefore, the problem of complicated work caused by inconvenient communication between operators due to overlong measurement intervals can be avoided. The operators at the pen 5 side and the multimeter side can synchronously see the display information, so that the operators at a far distance can also share the information in time.

As shown in fig. 8, the data processing unit 16 particularly includes a data collection port 161, a data processing module 162 and a data transmission module 163; the data collection port 161 is electrically connected with the data processing module 162 in a bidirectional manner, and the data processing module 162 is electrically connected with the data transmission module 163 in a bidirectional manner; the input of the data collection port 161 serves as the input of the data processing unit 16, and the data transmission module 163 is electrically connected in both directions to the central control system 17.

In the present embodiment, the data processing unit 16 receives the measurement data through the data collecting port 161, performs correlation and integration on the measurement data through the data processing module 162, and transmits the data to the central control system 17 through the data transmission module 163.

Referring to fig. 7, a background terminal is in signal connection with multimeter body 1, and the background terminal is used for storing and analyzing measurement data of stylus 5 and returning an analysis result to multimeter body 1.

It should be noted that, in this embodiment, the background terminal specifically includes a data analysis unit, a database, and a storage module; the data analysis unit is in signal connection with the database and is used for analyzing the measurement data of the meter pen 5 and returning the analysis result to the database; the database is respectively in signal connection with the central control system 17 and the storage module and is used for returning the analysis result to the central control system 17; the memory module is used for storing the measurement data of the stylus 5.

In this embodiment, the background terminal performs data interaction with the central control system 17 through the database, when the central control system 17 transmits the measurement data after association and integration to the database, the data analysis unit reads the data, and reads the previously stored association data from the storage module, and if the difference between the current measurement data and the previously stored measurement data is large, it is analyzed that the measurement position may be damaged. If the measurement location changes and the measurement data does not change due to damage, the multimeter operator can store the data in a memory module to update the previous data. Furthermore, a plurality of control buttons 29 can be arranged on multimeter body 1, control buttons 29 are connected with central control system 17, and an operator controls corresponding functions of central control system 17 through control buttons 29. Such as updating data of a certain measurement point, etc.

As shown in fig. 9, the data analysis unit in the backend terminal of this embodiment may be configured to include a data analysis port, a data feedback module, and a data comparison module; the data analysis port is in bidirectional electric connection with the data feedback module, and the data feedback module is in bidirectional electric connection with the data comparison module; the data analysis port is in signal connection with the database.

The data analysis unit in this embodiment performs data interaction with the database through the data analysis port (i.e., receives the measurement data after association and integration, and transmits the analyzed and determined data to the database), reads the measurement data corresponding to the previously stored measurement data after association and integration from the storage module through the data feedback module, and compares the difference between the previously stored measurement data after association and integration and the previously stored measurement data corresponding to the previously stored measurement data through the data comparison module, thereby implementing analysis of the measurement data.

This embodiment provides a portable multimeter with wireless transmission function, when needs examine equipment, operating personnel pulling mounting panel 2 makes mounting panel 2 open, accomodates the backup pad 7 whereabouts thereupon in the groove 6, inserts the draw-in groove 25 with second fixed block 24 in, accomplishes the fixed to the position of backup pad 7, makes multimeter body 1 keep certain angle. Then an operator draws out a plurality of groups of the meter pens 5, places the pen points of the meter pens 5 at corresponding electric potentials, the data acquisition module 9 transmits data to a second data receiving module 15 of the multimeter body 1 through a first wireless transmission module 10, the data processing unit 16 performs correlation integration processing on the collected data of each group of the meter pens 5 and displays the data on a second display module 18, then the data is sent back to a first data receiving module 12 through a second wireless transmission module 19 and displays the data of each group on a first display module 13 of the corresponding meter pen 5, the data is convenient for the operator to read, the collected and integrated data of the multimeter body 1 is transmitted to a database of a background terminal and stored by a storage module, a data analysis module performs comparative analysis on the previously collected data and the newly collected data, and the operator can conveniently judge the position of a damaged area according to the data, thus, the detection work of the equipment is completed.

The universal meter that this embodiment provided passes through the wireless transmission function, make universal meter pen-shape metre 5 can stride across the electric potential that a plurality of intervals measured both ends, make things convenient for follow-up record work, but also it is fixed to conveniently support the universal meter, make the staff facilitate when looking over data, it is not enough to have not only solved conventional universal meter when detecting the longer electric potential in interval, the problem of inconvenient detection, current universal meter is inconvenient to have still been solved and self is supported, lead to the inconvenient problem of looking over and the record to data of staff.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.