CN211014425U - Anti-misoperation device of multimeter - Google Patents
Anti-misoperation device of multimeter Download PDFInfo
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- CN211014425U CN211014425U CN201921270002.7U CN201921270002U CN211014425U CN 211014425 U CN211014425 U CN 211014425U CN 201921270002 U CN201921270002 U CN 201921270002U CN 211014425 U CN211014425 U CN 211014425U
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Abstract
The utility model relates to an electric power measurement field, more specifically relates to an anti-misoperation device is prevented to universal meter. The utility model discloses a different gears that the universal meter chooseed for use to the user, when the gear switches, can send voice prompt, in time prevent the maloperation. The utility model discloses an use hall sensor, need not to change the inner structure of universal meter, only need increase detachable and prevent that maloperation module and one end install the driver plate of a miniature magnet and press from both sides the cover, can reach and prevent maloperation effect. The method has very important function for preventing misoperation of the multimeter and ensuring safe and stable operation of the power grid.
Description
Technical Field
The utility model relates to an electric power measurement field, more specifically relates to an anti-misoperation device is prevented to universal meter.
Background
With the continuous development of national economy, the power grid is used as a power source for production and life and plays an increasingly important role in the national economy. The secondary protection is used as a defense line of the power grid, and guarantees are provided for safe and stable operation of the power grid. The power grid structure is large and complex day by day, part of equipment runs for a long time, and the comprehensive self-improvement project of the secondary specialty is more frequent. Whether large-scale comprehensive transformation projects or single interval protection replacement projects, relay protection personnel need to debug and accept on site. The universal meter is the indispensable instrument in this work, has taken place because with the accident of wrong gear position leading to 220kV circuit tripping operation in synthesizing the transformation, brings very big hidden danger to the safe and stable operation of equipment safety and electric wire netting.
Because the accident of tripping operation line is caused by using wrong universal meter gears, great hidden danger is brought to the safe and stable operation of equipment and a power grid. In order to ensure that the universal meter is correctly used, one person is required to operate and monitor, the monitoring efficiency is low, and misoperation is easy.
SUMMERY OF THE UTILITY MODEL
In order to solve among the prior art for the correct use universal meter, need alone the not enough of the one person's guardianship of operation, the utility model provides a device is prevented mistake by universal meter.
In order to solve the technical problem, the technical scheme of the utility model as follows:
the device comprises a dial sleeve and a universal meter sleeve, wherein the dial sleeve is nested on a gear shifting dial of the universal meter; a micro magnet is arranged in the driving plate clamping sleeve;
the multimeter jacket is provided with a voice module, a loudspeaker, a measuring gear sensing module, a shutdown gear sensing module and a power supply module; the voice module is respectively connected with the measuring gear sensing module, the shutdown gear sensing module and the loudspeaker; the power supply module is respectively connected with the voice module, the loudspeaker, the measuring gear sensing module and the shutdown gear sensing module.
When the universal meter is used, firstly, the drive plate jacket and the universal meter gear shifting drive plate are nested and installed, the universal meter jacket and the universal meter are nested and connected, when the universal meter gear shifting drive plate is switched to a power-off gear, the magnet of the drive plate jacket also points to the power-off gear induction module, the power-off gear induction module induces the magnetic field of the magnet, the power supply of the whole power universal meter anti-misoperation device is cut off, and the whole device is in a micro-power consumption standby state; when the universal meter shifts the driver plate and converts to a certain measurement gear, the magnet that the driver plate pressed from both sides the cover also points to corresponding measurement gear response module, measures that the gear response module draws down the corresponding IO port level on the voice module after sensing the magnetic field of magnet, and voice module repeated reports current gear information, reminds the user to notice, avoids using wrong gear to measure and leads to reading error even to take place electrical accident.
Preferably, the voice module is of a DY-SV17F model.
Preferably, the positive pole of the loudspeaker is connected with the positive output port SPK + of the DY-SV17F voice module, and the negative pole of the loudspeaker is connected with the negative output port SPK-of the DY-SV17F voice module.
Preferably, the measurement gear sensing module is installed right below a corresponding measurement gear of a universal meter jacket, each gear in the measurement gear sensing module consists of 1 first micro-power consumption hall sensor, and the model of the first micro-power consumption hall sensor is HEX 454;
the power supply port VDD of each 1 first micro-power Hall sensor is connected with the power supply port V5 of the DY-SV17F voice module, the ground port GND01 of each 1 first micro-power Hall sensor is connected with the ground port GND of the DY-SV17F voice module, and the output port OUT of each first micro-power Hall sensor is connected with the parallel input ports IO 0-IO 7 of the DY-SV17F voice module.
Preferably, the battery module consists of 1 lithium battery, 1 voltage reduction diode and 1 current limiting resistor, the model of the voltage reduction diode is 1N4007, the resistance value of the current limiting resistor is 5 ohms, and the power of the current limiting resistor is 0.5 watt;
the output port OUT of the first micro-power consumption Hall sensor in the measuring gear sensing module is connected to the input ports IO 1-IO 7 of the voice module, when the first micro-power consumption Hall sensor senses a magnetic field, the output port OUT outputs low level, the pressing state of a key control mode of the voice module is simulated, and the voice module broadcasts preset corresponding voice of the key.
The positive electrode BAT + of the lithium battery is connected with a power port V5 of the DY-SV17F voice module, the negative electrode BAT-of the lithium battery is connected with the positive electrode of the voltage reduction diode, the negative electrode of the voltage reduction diode is connected with one end of the current limiting resistor, and the other end of the current limiting resistor is connected with a ground port GND of the DY-SV17F voice module.
Preferably, the shutdown gear sensing module comprises 1 second micro-power hall sensor, 1N-channel field effect transistor and 1 pull-up resistor; the model of the second micro-power Hall sensor is HEX454, the model of the N-channel field effect transistor is AO3400A, and the resistance value of the pull-up resistor is 500K ohm;
the power supply port VDD of the second micro-power Hall sensor is connected with the power supply port V5 of the voice module, the ground port GND01 of the second micro-power Hall sensor is connected with the negative electrode BAT-of the power supply module, the output port OUT of the second micro-power Hall sensor is connected with the power supply port V5 of the voice module through a pull-up resistor, the output port OUT of the second micro-power Hall sensor is connected with the grid electrode of the N-channel field effect transistor, the drain electrode of the N-channel field effect transistor is connected with the ground port GND of the voice module, and the source electrode of the N-channel field effect transistor is connected with the negative electrode BAT-of the power supply module.
When a second micro-power-consumption Hall sensor in a shutdown gear induction module senses a magnetic field, an OUT port outputs a low level, the grid voltage of an N-channel field effect tube in the module is pulled down, the N-channel field effect tube is not conducted, a ground port GND of a voice module is disconnected with a negative electrode BAT-of a battery, the voice module is not powered on, the whole multimeter anti-misoperation device only consumes the working current of a second micro-power-consumption Hall sensor switch of the shutdown gear induction module and the working current of a pull-up resistor, the average working current of the second micro-power-consumption Hall sensor switch is less than 10 microamperes, the proper pull-up resistor working current is less than 10 microamperes, the standby current of the whole device is less than 20 microamperes, and long-time standby can be realized.
When the magnetic field leaves the induction range of the second micro-power-consumption Hall sensor of the module, the OUT port stops outputting low level, the pull-up resistor pulls the grid voltage of the N-channel field effect transistor in the module high, the N-channel field effect transistor is conducted, the ground port GND of the voice module is connected with the negative electrode BAT-of the battery, the voice module is powered on, and the whole multimeter starts working.
Preferably, the dial jacket is in a jacket form with an opening at the bottom surface, so that the dial jacket is directly nested on the gear shifting dial.
Compared with the prior art, the utility model discloses technical scheme's beneficial effect is:
the utility model discloses a different gears that the universal meter chooseed for use to the user, when the gear switches, can send voice prompt, in time prevent the maloperation. The utility model discloses an use hall sensor, need not to change the inner structure of universal meter, only need increase detachable and prevent that maloperation module and one end install the driver plate of a miniature magnet and press from both sides the cover, can reach and prevent maloperation effect. The method has very important function for preventing misoperation of the multimeter and ensuring safe and stable operation of the power grid.
Drawings
Fig. 1 is a diagram of the structure of the device of the present invention.
Fig. 2 is a circuit structure diagram of the present invention.
Fig. 3 is a schematic diagram of the present invention when not installed.
Fig. 4 is a schematic view of the present invention during installation.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product;
it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.
Example 1
As shown in fig. 1, 3 and 4, the anti-misoperation device for the multimeter comprises a dial jacket 15 and a multimeter jacket 16, wherein the dial jacket 15 is nested on a gear-shifting dial of the multimeter; the dial jacket 15 is internally provided with a micro magnet 7;
the universal meter jacket 16 is provided with a voice module 1, a loudspeaker 2, a measuring gear sensing module 3, a power-off gear sensing module 4 and a power module 5; the voice module 1 is respectively connected with the measuring gear induction module 3, the shutdown gear induction module 4 and the loudspeaker 2; the power module 5 is respectively connected with the voice module 1, the loudspeaker 2, the measuring gear sensing module 3 and the shutdown gear sensing module 4.
When the universal meter is used, firstly, the drive plate jacket 15 and a universal meter gear shifting drive plate are nested and installed, the universal meter jacket 16 and the universal meter are nested and connected, when the universal meter gear shifting drive plate is switched to a power-off gear, a magnet of the drive plate jacket 15 also points to the power-off gear induction module 4, the power-off gear induction module 4 induces a magnetic field of the magnet, a power supply of the whole power universal meter anti-misoperation device is cut off, and the whole device is in a micro-power consumption standby state; when the universal meter shifts the driver plate and converts to a certain measurement gear, the driver plate presss from both sides the magnet of cover 15 and also points to corresponding measurement gear response module 3, measures that gear response module 3 draws down the corresponding IO port level on voice module 1 after sensing the magnetic field of magnet, and voice module 1 repeatedly broadcasts current gear information, reminds the user to notice, avoids using wrong gear to measure and leads to reading error even to take place electrical accident.
Example 2
As shown in fig. 1, fig. 2, fig. 3 and fig. 4, in the present embodiment, the voice module 1 is of a model DY-SV 17F.
The positive electrode of the loudspeaker 2 is connected with the output positive electrode port SPK + of the DY-SV17F voice module 1, and the negative electrode of the loudspeaker 2 is connected with the output negative electrode port SPK-of the DY-SV17F voice module 1.
The measurement gear induction modules 3 are arranged under corresponding measurement gears of a universal meter jacket 16, each 1 measurement gear induction module 3 consists of 1 first micro-power consumption Hall sensor 8, and the model of the first micro-power consumption Hall sensor 8 is HEX 454;
the power supply port VDD of each 1 first micro-power hall sensor 8 is connected with the power supply port V5 of the DY-SV17F voice module 1, the ground port GND01 of each 1 first micro-power hall sensor 8 is connected with the ground port GND of the DY-SV17F voice module 1, and the output port OUT of each first micro-power hall sensor 8 is connected with parallel input ports IO 0-IO 7 of the DY-SV17F voice module 1.
The battery module consists of 1 lithium battery 12, 1 voltage reduction diode 13 and 1 current limiting resistor 14, wherein the model of the voltage reduction diode 13 is 1N4007, the resistance value of the current limiting resistor 14 is 5 ohms, and the power of the current limiting resistor 14 is 0.5 watt;
the output port OUT of the first micro-power consumption Hall sensor 8 in the measuring gear sensing module 3 is connected to the input ports IO 1-IO 7 of the voice module 1, when the first micro-power consumption Hall sensor 8 senses a magnetic field, the OUT port outputs a low level, the key pressing state of the 'key control mode' of the voice module 1 is simulated, and the voice module 1 broadcasts the preset key corresponding voice.
The positive electrode BAT + of the lithium battery 12 is connected with the power supply port V5 of the DY-SV17F voice module 1, the negative electrode BAT-of the lithium battery 12 is connected with the positive electrode of the voltage reduction diode 13, the negative electrode of the voltage reduction diode 13 is connected with one end of the current limiting resistor 14, and the other end of the current limiting resistor 14 is connected with the ground port GND of the DY-SV17F voice module 1.
The shutdown gear sensing module 4 comprises 1 second micro-power consumption hall sensor 9, 1N-channel field effect transistor 11 and 1 pull-up resistor 10; the model of the second micro-power hall sensor 9 is HEX454, the model of the N-channel field effect transistor 11 is AO3400A, and the resistance value of the pull-up resistor 10 is 500K ohms;
the power supply port VDD of the second micro-power hall sensor 9 is connected with the power supply port V5 of the voice module 1, the ground port GND01 of the second micro-power hall sensor 9 is connected with the negative electrode BAT-of the power supply module 5, the output port OUT of the second micro-power hall sensor 9 is connected with the power supply port V5 of the voice module 1 through a pull-up resistor 10, the output port OUT of the second micro-power hall sensor 9 is connected with the grid electrode of the N-channel field effect transistor 11, the drain electrode of the N-channel field effect transistor 11 is connected with the ground port GND of the voice module 1, and the source electrode of the N-channel field effect transistor 11 is connected with the negative electrode BAT-of the power supply module 5.
When a second micro-power Hall sensor 9 in a shutdown gear induction module 4 induces a magnetic field, an OUT port outputs a low level, the grid voltage of an N-channel field effect tube 11 in the module is pulled down, the N-channel field effect tube 11 is not conducted, a ground port GND of a voice module 1 is disconnected with a cathode BAT-of a battery, the voice module 1 is not electrified, the whole multimeter anti-misoperation device only consumes the working current of a second micro-power Hall sensor 9 switch of the shutdown gear induction module 4 and the working current of a pull-up resistor 10, the average working current of the second micro-power Hall sensor 9 switch is less than 10 microamperes, the proper pull-up resistor 10 working current is less than 10 microamperes, the standby current of the whole device is less than 20 microamperes, and long-time standby can be realized.
When the magnetic field leaves the sensing range of the second micro-power-consumption Hall sensor 9 of the module, the OUT port stops outputting low level, the pull-up resistor 10 pulls up the grid voltage of the N-channel field effect transistor 11 in the module, the N-channel field effect transistor 11 is conducted, the ground port GND of the voice module 1 is connected with the negative electrode BAT-of the battery, the voice module 1 is powered on, and the whole multimeter starts working.
Preferably, the dial sleeve 15 is in a sleeve form with an opening at the bottom surface, so that the dial sleeve 15 is directly nested on the gear shifting dial.
The same or similar reference numerals correspond to the same or similar parts;
the terms describing positional relationships in the drawings are for illustrative purposes only and are not to be construed as limiting the patent;
it is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (7)
1. The anti-misoperation device of the multimeter is characterized by comprising a dial sleeve (15) and a multimeter sleeve (16), wherein the dial sleeve (15) is nested on a gear-shifting dial of the multimeter; a micro magnet (7) is arranged in the dial plate jacket (15);
the universal meter jacket (16) is provided with a voice module (1), a loudspeaker (2), a measuring gear sensing module (3), a power-off gear sensing module (4) and a power supply module (5); the voice module (1) is respectively connected with the measuring gear sensing module (3), the shutdown gear sensing module (4) and the loudspeaker (2); the power module (5) is respectively connected with the voice module (1), the loudspeaker (2), the measuring gear induction module (3) and the shutdown gear induction module (4).
2. A multimeter anti-misoperation device according to claim 1, wherein the voice module (1) is of type DY-SV 17F.
3. A multimeter anti-misoperation device according to claim 2, wherein the positive pole of the speaker (2) is connected with the positive output port SPK + of the DY-SV17F voice module (1), and the negative pole of the speaker (2) is connected with the negative output port SPK-of the DY-SV17F voice module (1).
4. The anti-misoperation device of the multimeter according to claim 3, wherein the measurement range sensing module (3) is installed right below a corresponding measurement range of a multimeter jacket (16), each range in the measurement range sensing module (3) is composed of 1 first micro-power consumption Hall sensor (8), and the model of the first micro-power consumption Hall sensor (8) is HEX 454;
the power supply port VDD of each 1 first micro-power Hall sensor (8) is connected with the power supply port V5 of the DY-SV17F voice module (1), the ground port GND01 of each 1 first micro-power Hall sensor (8) is connected with the ground port GND of the DY-SV17F voice module (1), and the output port OUT of each 1 first micro-power Hall sensor (8) is connected with parallel input ports IO 0-IO 7 of the DY-SV17F voice module (1).
5. A multimeter anti-misoperation device according to claim 4, wherein the device further comprises a battery module 5, the battery module 5 is composed of 1 lithium battery (12), 1 voltage reduction diode (13), and 1 current limiting resistor (14), the type of the voltage reduction diode (13) is 1N4007, the resistance value of the current limiting resistor (14) is 5 ohm, and the power of the current limiting resistor (14) is 0.5 watt;
the positive electrode BAT + of the lithium battery (12) is connected with a power port V5 of the DY-SV17F voice module (1), the negative electrode BAT-of the lithium battery (12) is connected with the positive electrode of the voltage reduction diode (13), the negative electrode of the voltage reduction diode (13) is connected with one end of the current limiting resistor (14), and the other end of the current limiting resistor (14) is connected with a ground port GND of the DY-SV17F voice module (1).
6. A multimeter anti-misoperation device according to claim 5, wherein the shutdown gear sensing module (4) comprises 1 second micro-power consumption Hall sensor (9), 1N-channel field effect transistor (11) and 1 pull-up resistor (10); the model of the second micro-power Hall sensor (9) is HEX454, the model of the N-channel field effect transistor (11) is AO3400A, and the resistance value of the pull-up resistor (10) is 500K ohms;
the power supply port VDD of the second micro-power Hall sensor (9) is connected with the power supply port V5 of the voice module (1), the ground port GND01 of the second micro-power Hall sensor (9) is connected with the negative electrode BAT-of the power supply module (5), the output port OUT of the second micro-power Hall sensor (9) is connected with the power supply port V5 of the voice module (1) through a pull-up resistor (10), the output port OUT of the second micro-power Hall sensor (9) is connected with the grid of the N-channel field effect tube (11), the drain electrode of the N-channel field effect tube (11) is connected with the ground port GND of the voice module (1), and the source electrode of the N-channel field effect tube (11) is connected with the negative electrode BAT-of the power supply module (5).
7. A multimeter anti-misoperation device according to claim 6, wherein the dial jacket (15) is in the form of a jacket with an open bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921270002.7U CN211014425U (en) | 2019-08-06 | 2019-08-06 | Anti-misoperation device of multimeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921270002.7U CN211014425U (en) | 2019-08-06 | 2019-08-06 | Anti-misoperation device of multimeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211014425U true CN211014425U (en) | 2020-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921270002.7U Active CN211014425U (en) | 2019-08-06 | 2019-08-06 | Anti-misoperation device of multimeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211014425U (en) |
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2019
- 2019-08-06 CN CN201921270002.7U patent/CN211014425U/en active Active
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