CN209842041U - Capacitance and inductance tester capable of performing remote diagnosis - Google Patents
Capacitance and inductance tester capable of performing remote diagnosis Download PDFInfo
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- CN209842041U CN209842041U CN201920444420.7U CN201920444420U CN209842041U CN 209842041 U CN209842041 U CN 209842041U CN 201920444420 U CN201920444420 U CN 201920444420U CN 209842041 U CN209842041 U CN 209842041U
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Abstract
The utility model discloses a but remote diagnosis's electric capacity inductance tester belongs to electric capacity inductance tester, the utility model discloses the technical problem who solves guides user operation for how to realize technical staff remote debugging diagnosis electric capacity inductance tester, makes things convenient for the fault handling, and the material resources of using manpower sparingly, the technical scheme of adoption is: the tester comprises a shell and a mainboard arranged in the shell, wherein the shell is of a rectangular box-shaped structure, and a voltage interface A, a voltage interface B and a current interface are sequentially arranged on the upper end surface of the rectangular box-shaped shell; a charging port, an indicator light, a display screen and a key are arranged on the side surface of one side of the shell; the main board is provided with a current and voltage measuring unit, a fault storage unit, a 4G communication module and an isolation power module, the fault storage unit comprises an auxiliary CPU, an optical coupling isolator and a ferroelectric memory, the auxiliary CPU is electrically connected with the optical coupling isolator, the 4G communication module and the ferroelectric memory respectively, and the optical coupling isolator is electrically connected with the current and voltage measuring unit through a serial port.
Description
Technical Field
The utility model relates to an electric capacity inductance tester, specifically speaking are but remote diagnosis's electric capacity inductance tester.
Background
The capacitance and inductance tester is an important instrument for testing the capacitor of the transformer substation, and the use amount of a test field is large. Due to reasons such as irregular operation, the capacitance and inductance tester is easy to have test faults or other measurement problems. The instrument manufacturer needs to send a special technician to the site to search for problems, which easily causes waste of manpower and material resources. Therefore, how to realize the remote debugging and diagnosis of the capacitance and inductance tester by technicians, guide the operation of users, facilitate the fault treatment and save the manpower and material resources is a technical problem existing in the prior art at present.
Patent document No. CN206161740U discloses a wireless distributed capacitance and inductance testing device, in which a current clamp of the testing device is clamped on a connecting aluminum bar of a capacitor or an inductor to be tested, the other end of the testing device is connected to a current testing path port through an aviation plug, a testing power supply output is connected to two ends of the capacitor or the inductor to be tested through a testing line, and a voltage testing path is connected to a voltage amplifier for voltage amplification; the amplified current signal and voltage signal are transmitted to an A/D conversion unit, the converted current signal and voltage signal are transmitted to a DSP digital signal processor through a parallel port, the characteristic values of amplitude, initial phase angle and the like obtained by operation are output to a wireless communication unit through a UART serial communication port, and then are transmitted to a host. However, the technical scheme can not realize remote debugging and diagnosis of the capacitance and inductance tester by technicians, guide user operation, facilitate fault treatment and save manpower and material resources.
Disclosure of Invention
The technical task of the utility model is to provide a but remote diagnosis's electric capacity inductance tester, solve how to realize technical staff remote debugging diagnosis electric capacity inductance tester, guide the user operation, make things convenient for the fault handling, the problem of the material resources of using manpower sparingly.
The technical task of the utility model is realized in the following way, a capacitance and inductance tester capable of remote diagnosis, which comprises a shell and a mainboard arranged in the shell, wherein the shell is of a rectangular box-shaped structure, and the upper end surface of the rectangular box-shaped shell is sequentially provided with a voltage interface A, a voltage interface B and a current interface; a charging port, an indicator light, a display screen and a key are arranged on the side surface of one side of the shell;
the main board is provided with a current and voltage measuring unit, a fault storage unit, a 4G communication module and an isolation power supply module, the fault storage unit comprises a secondary CPU, an optical coupling isolator and a ferroelectric memory, the secondary CPU is respectively and electrically connected with the optical coupling isolator, the 4G communication module and the ferroelectric memory, and the optical coupling isolator is electrically connected with the current and voltage measuring unit through a serial port;
the isolation power supply module is respectively and electrically connected with the 4G communication module, the auxiliary CPU, the optical coupler isolator and the ferroelectric memory to supply power to the 4G communication module; the isolation power supply module is used for realizing isolation between the fault storage unit and the 4G communication module and the current and voltage measurement unit, and ensuring that the fault storage unit and the 4G communication module can work normally when the current and voltage measurement unit has circuit faults.
Preferably, the charging port is arranged at a position, close to the lower middle part of the side surface of the shell, the indicator lamp is arranged at a position, close to the upper middle part of the side surface of the shell, the display screen is arranged between the charging port and the indicator lamp, and the key is arranged at one side of the display screen and is arranged in parallel with the key and the display screen.
Preferably, the charging port is externally connected with a 12.6V charging power supply and is used for charging and supplying power to the main board in the shell;
the keys comprise four touch buttons, wherein the four touch buttons are an up-shift key, a down-shift key, a right-shift key and a determination key respectively;
the display screen adopts a black-and-white liquid crystal screen with the resolution of 128 x 64 and is used for displaying the measurement result;
the voltage interface A and the voltage interface B are used for outputting alternating voltage to the outside and providing the alternating voltage for a to-be-tested sample;
the current interface is used for receiving a detected current signal of a to-be-detected test article and providing the current signal for the internal analysis of the tester; the current signal is acquired by current clamp induction.
Preferably, the current and voltage measuring unit comprises a main CPU, a voltage signal collector, a current signal collector, an a/D converter, a key and a display module, and the main CPU is electrically connected with the opto-isolator, the a/D converter, the key and the display module, and the power amplifier chip respectively; the A/D converter is electrically connected with the voltage signal collector and the current signal collector respectively.
Preferably, the current and voltage measuring unit further comprises a power supply module, and the power supply module is respectively electrically connected with the main CPU, the voltage signal collector, the current signal collector, the A/D converter, the power amplifier chip, the key and the display module to supply power to the main CPU, the voltage signal collector, the current signal collector, the A/D converter, the power amplifier chip and the key and display module;
the power module comprises a 12.6V lithium battery and a voltage stabilizing chip, the voltage stabilizing chip comprises an LDO chip and a DC-DC chip, the LDO chip adopts AS1117-3.3, and the DC-DC chip adopts TPS 5450; the power module can meet 5-36V wide voltage input, a proper power supply chip is selected according to the rated voltage and power condition of the module, the DC-DC chip adopts TPS5450(3A power supply capacity, +5V), and the LDO chip adopts AMS1117-3.3(1A power supply capacity, + 3.3V).
Preferably, the 12.6V lithium battery of the power supply module supplies power to the isolation power supply module; the isolation power supply module comprises an LDO chip and an isolation voltage stabilization chip, the isolation voltage stabilization chip is used for isolating voltage, the output voltage and the isolation voltage of the isolation voltage stabilization chip are respectively 5V and 1500V, and the isolation voltage stabilization chip adopts B1205XT-W2R 2;
the LDO chip is used for supplying power to the auxiliary CPU, and the AS1117-3.3(1A power supply capacity, +3.3V) is adopted by the LDO chip.
Preferably, the voltage signal collector is used for collecting voltage signals output by the voltage interface A and the voltage interface B in a mode of serially connecting resistors for voltage division, and the voltage signals are transmitted to the A/D converter after voltage division; the voltage signal collector adopts two resistors with 0.1% precision, namely a3 kiloohm resistor and a 1.5 kiloohm resistor which are connected in series for voltage division and then are supplied to a following circuit;
the current signal collector is used for amplifying the input weak current signal and transmitting the amplified weak current signal to the A/D converter; the AD8253 is adopted as the amplifying chip of the current signal collector.
More preferably, the main CPU employs STM32F103RCT 6;
the main CPU is connected with a power amplifier chip through an analog output pin, and the power amplifier chip is used for amplifying the analog sine wave output by the main CPU and supplying the amplified sine wave to a sample to be detected; the power amplifier chip adopts TPA3116D 2;
the main CPU is connected with an A/D converter through a parallel port, and the A/D converter is used for converting the acquired input signals into digital quantity and providing the digital quantity to the main CPU; the A/D converter employs AD 7656.
More preferably, the sub-CPU employs STM32F103RCT 6;
the auxiliary CPU is connected with the optical coupler isolator through a serial port, and the optical coupler isolator is used for isolating electrical signals between the main CPU and the auxiliary CPU; the optocoupler isolator adopts TLP 181;
the auxiliary CPU is connected with the ferroelectric memory through the SPI, the ferroelectric memory is used for storing the ID and the historical fault information of the tester, and the identification and the control are carried out according to the ID of the tester in the network communication; the memory chip in the ferroelectric memory employs FM25L 16B.
Preferably, the auxiliary CPU is connected to the 4G communication module through a serial port, the 4G communication module is used for data transmission using a mobile 4G network or a telecommunication 4G network, and a technician remotely reads current test information, historical failure information or remotely operates an instrument of the tester through the 4G network to work; the 4G communication module adopts WH-LTE-7S4V 2.
The utility model discloses a but remote diagnosis's electric capacity inductance test appearance has following advantage:
the utility model has the advantages that technical personnel do not need to arrive at a test site, remote diagnosis or debugging work is carried out on the interior of the capacitance and inductance tester through a 4G network, the problem is solved and eliminated, and manpower and material resources are saved;
the tester of the utility model can be operated by a key to set the tester into a normal mode or a remote mode; the user can carry out normal measurement work in a normal state, and 4G network communication is not started; and in a remote state, a technician is allowed to debug the diagnostic instrument remotely through a 4G network, so that the operation of a user is conveniently guided, and the fault treatment is quickly carried out.
The utility model has the characteristics of reasonable in design, simple structure, easily processing, small, convenient to use, a thing is multi-purpose etc, therefore, has fine popularization and use value.
Drawings
The present invention will be further explained with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of a capacitance and inductance tester capable of remote diagnosis;
FIG. 2 is a schematic perspective view of a capacitance-inductance tester capable of remote diagnosis;
fig. 3 is a block diagram of the motherboard.
In the figure: 1. charging port, 2, key, 3, display screen, 4, indicator light, 5, voltage interface A, 6, voltage interface B, 7, current interface, 8, current and voltage measuring unit, 9, fault storage unit, 10, 4G communication module, 11, isolation power supply module, 12, auxiliary CPU, 13, optical coupling isolator, 14, ferroelectric memory, 15, main CPU, 16, voltage signal collector, 17, current signal collector, 18, A/D converter, 19, key and display module, 20, power supply module, 21, power amplifier chip, 22, shell, 23, mainboard.
Detailed Description
The present invention will be described in detail with reference to the drawings and specific embodiments.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and for simplification of description. And are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example (b):
as shown in fig. 1 and 2, the capacitance and inductance tester capable of remote diagnosis of the present invention includes a casing 22 and a main board 23 installed in the casing 22, the casing 22 is a rectangular box-shaped structure, and a voltage interface A5, a voltage interface B6 and a current interface 7 are sequentially installed on the upper end surface of the rectangular box-shaped casing 22; a charging port 1, an indicator lamp 4, a display screen 3 and a key 2 are arranged on one side surface of the shell 22; charging port 1 is located the position that casing 22 side middle part leaned on down, and pilot lamp 4 is installed in the position that casing 22 side middle part leaned on, and display screen 3 installs between charging port 1 and pilot lamp 4, and button 2 installs in one side of display screen 3 and sets up with button 2 and display screen 3 side by side. The charging port 1 is used for being externally connected with a 12.6V charging power supply and supplying power for a mainboard in the shell 22; the key 2 comprises four touch buttons which are an up-shift key, a down-shift key, a right-shift key and a determination key respectively; the display screen 3 adopts a black-and-white liquid crystal screen with the resolution of 128 x 64, and the display screen 3 is used for displaying the measurement result; the voltage interface A5 and the voltage interface B6 are used for outputting alternating voltage to the outside and providing the alternating voltage for a sample to be tested; the current interface 7 is used for receiving a detected current signal of a to-be-detected test article and providing the current signal for the internal analysis of the tester; the current signal is acquired by current clamp induction.
As shown in fig. 3, a current and voltage measuring unit 8, a fault storage unit 9, a 4G communication module 10 and an isolation power supply module 11 are installed on a main board 23, the fault storage unit 9 includes a sub-CPU 12, an optical coupler isolator 13 and a ferroelectric memory 14, the sub-CPU 12 is electrically connected with the optical coupler isolator 13, the 4G communication module 10 and the ferroelectric memory 14 respectively, and the optical coupler isolator 13 is electrically connected with the current and voltage measuring unit 8 through a serial port; the isolation power supply module 11 is respectively electrically connected with the 4G communication module 10, the auxiliary CPU12, the optical coupler isolator 13 and the ferroelectric memory 14 to supply power to the 4G communication module; the isolation power supply module 11 is used for realizing isolation between the fault storage unit 9 and the 4G communication module 10 and the current and voltage measurement unit 8, and ensuring that the fault storage unit 9 and the 4G communication module 10 can work normally when the current and voltage measurement unit has a circuit fault. The sub-CPU 12 employs STM32F103RCT 6; the auxiliary CPU12 is connected with the optical coupler isolator 13 through a serial port, and the optical coupler isolator 13 is used for isolating electrical signals between the main CPU15 and the auxiliary CPU 12; the optocoupler isolator 13 uses TLP 181; the sub-CPU 12 is connected with the ferroelectric memory 14 through the SPI, the ferroelectric memory 14 is used for storing the ID and the historical fault information of the tester, and the identification and the control are carried out according to the ID of the tester in the network communication; the memory chip in the ferroelectric memory 14 employs FM25L 16B. The auxiliary CPU12 is connected with the 4G communication module 10 through a serial port, the 4G communication module 10 is used for carrying out data transmission by using a mobile 4G network or a telecommunication 4G network, and a technician remotely reads current test information and historical fault information of the tester through the 4G network or remotely operates the tester to work; the 4G communication module 10 employs WH-LTE-7S4V 2. The 12.6V lithium battery of the power module 20 supplies power for the isolation power module 11; the isolation power supply module 11 comprises an LDO chip and an isolation voltage stabilization chip, the isolation voltage stabilization chip is used for isolating voltage, the output voltage and the isolation voltage of the isolation voltage stabilization chip are respectively 5V and 1500V, and the isolation voltage stabilization chip adopts B1205XT-W2R 2; the LDO chip is used for supplying power to the auxiliary CPU, and the AS1117-3.3(1A power supply capacity, +3.3V) is adopted by the LDO chip.
The current and voltage measuring unit 8 comprises a main CPU15, a voltage signal collector 16, a current signal collector 17, an A/D converter 18, a power module 20, a power amplifier chip 21 and a key and display module 19, wherein the main CPU15 is electrically connected with the optical coupling isolator 13, the A/D converter 18, the key and display module 19 and the power amplifier chip 21 respectively; the a/D converter 18 is electrically connected to the voltage signal collector 16 and the current signal collector 17, respectively. The power supply module 20 is respectively electrically connected with the main CPU15, the voltage signal collector 16, the current signal collector 17, the A/D converter 18, the power amplifier chip 21 and the key and display module 19 for supplying power; the power module 20 comprises a 12.6V lithium battery and a voltage stabilizing chip, wherein the voltage stabilizing chip comprises an LDO chip and a DC-DC chip, the LDO chip adopts AS1117-3.3, and the DC-DC chip adopts TPS 5450; the power module 20 can meet the wide voltage input of 5-36V, an appropriate power supply chip is selected according to the rated voltage and power condition of the module, the DC-DC chip adopts TPS5450(3A power supply capacity, +5V), and the LDO chip adopts AMS1117-3.3(1A power supply capacity, + 3.3V). The voltage signal collector 16 collects voltage signals output by the voltage interface A5 and the voltage interface B6 by adopting a mode of serially connecting resistors for voltage division, and transmits the voltage signals to the a/D converter 18 after voltage division; the current signal collector 17 is used for amplifying the input weak current signal and transmitting the amplified weak current signal to the A/D converter 18; the amplifying chip of the current signal collector 17 adopts AD 8253. The main CPU15 employs STM32F103RCT 6; the main CPU15 is connected with a power amplifier chip 21 through an analog output pin, and the power amplifier chip 21 is used for amplifying the analog sine wave output by the main CPU15 and supplying the amplified sine wave to a sample to be detected; the power amplifier chip 21 adopts TPA3116D 2; the main CPU15 is connected with an A/D converter 18 through a parallel port, and the A/D converter 18 is used for converting the acquired input signals into digital quantity and providing the digital quantity for the main CPU 15; the a/D converter 18 employs AD 7656.
The tester is set to a normal mode or a remote mode by the operation of the key 2. And in a normal state, the user can carry out normal measurement work and does not start 4G network communication. And in the remote state, a technician is allowed to remotely debug the diagnostic instrument through the 4G network.
During normal use, the tester is set to the normal mode. An operator operates the key 2 to start the tester to measure, the main CPU15 simulates sine wave output through an analog output pin, and the sine wave output is amplified by the power amplifier chip 21 and then output to an external sample to be tested through the voltage interface A5 and the voltage interface B6. The voltage signal collector 16 collects voltage signals at the voltage interface A5 and the voltage interface B6, and the current signal collector 17 collects input current signals. The voltage signal collector 16 and the current signal collector 17 adjust the signals to be within the signal amplitude range acceptable by the A/D converter 18, and transmit the signals to the A/D converter 18. The main CPU15 reads data information of the a/D converter 18 through the parallel port, and obtains a measurement result by calculation. And the measurement result is displayed through a display screen.
In a normal state, the main CPU15 transmits the tester information to the failure storage unit 9 in real time. The failure storage unit 9 receives only information and does not store it. When the tester has a fault and the main CPU15 can normally operate, the main CPU15 sends the fault information in the current test state to the fault storage unit and stores the fault information. When the tester fails and the main CPU15 cannot work normally, the failure storage unit 9 stores the tester information sent by the main CPU15 last time.
And when the remote diagnosis is carried out, the tester is set to be in a remote mode. The local user of the tester needs to inform the remote technician of the ID of the fault tester and keep the tester powered on. The remote technician can establish communication with the 4G communication module 10 through network communication, and debug the work through transferring the fault information in the ferroelectric memory by the auxiliary CPU12 or through the communication between the auxiliary CPU12 and the main CPU 15.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A capacitance and inductance tester capable of performing remote diagnosis is characterized by comprising a shell and a main board arranged in the shell, wherein the shell is of a rectangular box-shaped structure, and a voltage interface A, a voltage interface B and a current interface are sequentially arranged on the upper end surface of the rectangular box-shaped shell; a charging port, an indicator light, a display screen and a key are arranged on the side surface of one side of the shell;
the main board is provided with a current and voltage measuring unit, a fault storage unit, a 4G communication module and an isolation power supply module, the fault storage unit comprises a secondary CPU, an optical coupling isolator and a ferroelectric memory, the secondary CPU is respectively and electrically connected with the optical coupling isolator, the 4G communication module and the ferroelectric memory, and the optical coupling isolator is electrically connected with the current and voltage measuring unit through a serial port;
the isolation power supply module is respectively and electrically connected with the 4G communication module, the auxiliary CPU, the optical coupler isolator and the ferroelectric memory to supply power to the 4G communication module; the isolation power supply module is used for realizing isolation between the fault storage unit and the 4G communication module and the current and voltage measurement unit, and ensuring that the fault storage unit and the 4G communication module can work normally when the current and voltage measurement unit has circuit faults.
2. The remote diagnostic capacitance and inductance tester as claimed in claim 1, wherein the charging port is disposed at a lower position in the middle of the side surface of the housing, the indicator lamp is disposed at an upper position in the middle of the side surface of the housing, the display screen is disposed between the charging port and the indicator lamp, and the button is disposed at one side of the display screen and juxtaposed to the button and the display screen.
3. The capacitance-inductance tester capable of being diagnosed remotely as claimed in claim 1 or 2, wherein the charging port is used for being externally connected with a charging power supply to charge and supply power for the mainboard in the shell;
the keys comprise four touch buttons, wherein the four touch buttons are an up-shift key, a down-shift key, a right-shift key and a determination key respectively;
the display screen adopts a black-and-white liquid crystal screen with the resolution of 128 x 64 and is used for displaying the measurement result;
the voltage interface A and the voltage interface B are used for outputting alternating voltage to the outside and providing the alternating voltage for a to-be-tested sample;
the current interface is used for receiving the detected current signal of the to-be-tested sample and providing the current signal for the internal analysis of the tester.
4. The capacitive inductance tester capable of being diagnosed remotely as claimed in claim 3, wherein the current and voltage measuring unit comprises a main CPU, a voltage signal collector, a current signal collector, an A/D converter, a power amplifier chip, a key and a display module, and the main CPU is electrically connected with the optical coupling isolator, the A/D converter, the key and the display module and the power amplifier chip respectively; the A/D converter is electrically connected with the voltage signal collector and the current signal collector respectively.
5. The capacitance-inductance tester capable of being diagnosed remotely as claimed in claim 4, wherein the current-voltage measuring unit further comprises a power module, and the power module is respectively electrically connected with the main CPU, the voltage signal collector, the current signal collector, the A/D converter, the power amplifier chip, the key and the display module to supply power to the power module;
the power module comprises a lithium battery and a voltage stabilizing chip, the voltage stabilizing chip comprises an LDO chip and a DC-DC chip, the LDO chip adopts AS1117-3.3, and the DC-DC chip adopts TPS 5450.
6. The remotely diagnosable capacitance-inductance tester as claimed in claim 5, wherein the lithium battery of the power module supplies power to the isolated power module; the isolation power supply module comprises an LDO chip and an isolation voltage stabilization chip, the isolation voltage stabilization chip is used for isolating voltage, the output voltage and the isolation voltage of the isolation voltage stabilization chip are respectively 5V and 1500V, and the isolation voltage stabilization chip adopts B1205XT-W2R 2;
the LDO chip is used for supplying power for the auxiliary CPU and adopts AS 1117-3.3.
7. The capacitance-inductance tester capable of being diagnosed remotely as claimed in claim 6, wherein the voltage signal collector is used for collecting voltage signals output by the voltage interface A and the voltage interface B by adopting a mode of serially connecting resistors and dividing voltage, and transmitting the voltage signals to the A/D converter after voltage division;
the current signal collector is used for amplifying the input weak current signal and transmitting the amplified weak current signal to the A/D converter; the AD8253 is adopted as the amplifying chip of the current signal collector.
8. The remotely diagnosable capacitance-inductance tester as claimed in claim 7, wherein the host CPU employs STM32F103RCT 6;
the main CPU is connected with a power amplifier chip through an analog output pin, and the power amplifier chip is used for amplifying the analog sine wave output by the main CPU and supplying the amplified sine wave to a sample to be detected; the power amplifier chip adopts TPA3116D 2;
the main CPU is connected with an A/D converter through a parallel port, and the A/D converter is used for converting the acquired input signals into digital quantity and providing the digital quantity to the main CPU; the A/D converter employs AD 7656.
9. The remotely diagnosable capacitance-inductance tester as claimed in claim 8, wherein the sub-CPU employs STM32F103RCT 6;
the auxiliary CPU is connected with the optical coupler isolator through a serial port, and the optical coupler isolator is used for isolating electrical signals between the main CPU and the auxiliary CPU; the optocoupler isolator adopts TLP 181;
the auxiliary CPU is connected with the ferroelectric memory through the SPI, the ferroelectric memory is used for storing the ID and the historical fault information of the tester, and the identification and the control are carried out according to the ID of the tester in the network communication; the memory chip in the ferroelectric memory employs FM25L 16B.
10. The capacitive inductance tester capable of being diagnosed remotely as claimed in claim 9, wherein the sub CPU is connected with a 4G communication module through a serial port, the 4G communication module is used for data transmission by using a mobile 4G network or a telecommunication 4G network, and a technician remotely reads current test information, historical fault information or remotely operates the tester through the 4G network to work; the 4G communication module adopts WH-LTE-7S4V 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920444420.7U CN209842041U (en) | 2019-04-03 | 2019-04-03 | Capacitance and inductance tester capable of performing remote diagnosis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920444420.7U CN209842041U (en) | 2019-04-03 | 2019-04-03 | Capacitance and inductance tester capable of performing remote diagnosis |
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| Publication Number | Publication Date |
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| CN209842041U true CN209842041U (en) | 2019-12-24 |
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| CN201920444420.7U Active CN209842041U (en) | 2019-04-03 | 2019-04-03 | Capacitance and inductance tester capable of performing remote diagnosis |
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| Country | Link |
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