CN206057547U - A kind of Portable DC voltage sensor test device - Google Patents
A kind of Portable DC voltage sensor test device Download PDFInfo
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- CN206057547U CN206057547U CN201621082266.6U CN201621082266U CN206057547U CN 206057547 U CN206057547 U CN 206057547U CN 201621082266 U CN201621082266 U CN 201621082266U CN 206057547 U CN206057547 U CN 206057547U
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Abstract
This utility model discloses a kind of Portable DC voltage sensor test device, including device body, power module, intelligent test module are provided with device body, High voltage output interface, working power output interface and current sample input interface are provided with device body, intelligent test module receives test instruction, and the test voltage of grade needed for controlling export by High voltage output interface, by working power output interface output power supply to tested sensor, and control is by the current feedback signal of the tested sensor of current sample input interface collection.This utility model concrete structure is compact, required low cost, be easy to carry and perform test, and the advantage of measuring accuracy and efficiency high.
Description
Technical field
This utility model is related to power equipment technical field of measurement and test, more particularly to a kind of Portable DC voltage sensor is surveyed
Trial assembly is put.
Background technology
Direct current voltage sensor is widely used in the electric devices such as current transformer, chopper, it is often necessary to carry out failure to which
Detection is tested.Such as when system jam, and the failure is when may be voltage sensor failure, is all generally logical at present
The resistance for crossing test voltage sensor does preliminary judgement, and voltage sensor, then the voltage sensor to changing are changed after confirming failure
Device carries out energizing test confirmation.Such direct current voltage sensor test mode, it is necessary first to remove voltage sensor, realizes multiple
It is miscellaneous, when the cabinet design space of device limits, it may be necessary to around removing after multiple parts can removal sensor, sensing
Device dismounting is more difficult；Also need to specific high-tension electricity testing equipment can just be verified after more emat sensor, tedious process, locate
The reason cycle is long.
For the verification experimental verification of direct current voltage sensor, then DC0V～DC2000V adjustable DCs are typically configured simultaneously high
Voltage source, ± 15V working powers and high precision electro flow table are carried out, and wherein adjustable DC high voltage power supply is by outside access
AC220V powers, there is provided DC0V～DC2000V high voltage power supplies；± 15V working powers are powered by AC220V, and conversion output DC ±
15V, there is provided working power, gathers tested voltage sensor feedback current by high precision electro flow table.I.e. to direct current voltage sensor
Verification experimental verification when, while needing to be equipped with adjustable DC high voltage power supply, ± 15V working powers and high precision electro flow table etc. multiple
Equipment, on the one hand, required instrument and equipment is more, weight big, causes testing equipment cost to increase, while each equipment is required to AC220V
Power supply, mobile and carrying are all inconvenient, it is impossible to easily in repair and maintenance onsite application, cannot also meet the operations such as portable detection
Demand；On the other hand, need to control during test simultaneously and adjust individual device, test operation is not convenient so that testing efficiency is low.
Utility model content
The technical problems to be solved in the utility model is that：For the technical problem that prior art is present, this practicality is new
Type provides a kind of compact conformation, required low cost, be easy to carry and perform test, and measuring accuracy and efficiency high is portable
Formula direct current voltage sensor test device.
For solve above-mentioned technical problem, the utility model proposes technical scheme be：
A kind of Portable DC voltage sensor test device, including device body, described device are originally provided with electricity in vivo
Source module, intelligent test module, are provided with High voltage output interface, working power output interface and electric current on described device body
Sampling input interface, the intelligent test module receive test instruction, and control by needed for High voltage output interface output
The test voltage of grade, by the working power output interface output power supply give tested sensor, and control pass through
The current sample input interface gathers the current feedback signal of tested sensor.
As further improvement of the utility model：The intelligent test module include control unit and respectively with institute
State the test instruction acquisition unit of control unit connection, the various level estimate voltages for including high voltage power supply are exported for changing
High pressure converting unit, the working power converting unit for changing output power supply and current sampling unit.
As further improvement of the utility model：The high pressure converting unit is by multiple voltage transformation modules series connection structure
Into the test voltage of the various grades of Access Control output by controlling each voltage transformation module.
As further improvement of the utility model：The input of each voltage transformation module is provided with control relay
Device, the control relay are connected with described control unit, control the voltage transformation module by the control relay
Access.
As further improvement of the utility model：Described control unit includes cpu control circuit, the photoelectricity being sequentially connected
Isolation circuit and drive circuit, the outfan of the drive circuit are connected with control relay each described respectively.
As further improvement of the utility model：The current sampling unit includes resistance sampling circuit, amplifier electricity
Sample rate current is accessed on road, the resistance sampling circuit, is exported to described control unit after the amplifier circuit.
As further improvement of the utility model：The intelligent test module is also included for storing current feedback signal
As a result memory element, the memory element are connected with described control unit, current sampling unit respectively.
As further improvement of the utility model：Be additionally provided with described device body for receive test instruction and
The interactive display module of test result is shown, the interactive display module is connected with the intelligent test module.
As further improvement of the utility model：External connection interface is additionally provided with described device body；It is described right
Outer connecting interface is USB interface.
As further improvement of the utility model：The power module is lithium battery group.
Compared with prior art, the utility model has the advantage of：
1) this utility model Portable DC voltage sensor test device, it is not necessary to dismantle tested voltage sensor, only
In the case of disconnecting its external circuit wiring, the input of High voltage output interface, working power output interface and current sample is connect
Mouth is connected to the current output terminal of tested voltage sensor and can perform test, and test operation is convenient, can be completed by a table apparatus
Whole test process, device takes up room little, is easy to mobile and carries, the testing cost needed for can reducing, while convenient
Ground is in repair and maintenance onsite application or performs portable detection operation；
2) this utility model Portable DC voltage sensor test device, receives test by intelligent test module and refers to
Order, and the test voltage of grade needed for controlled output, working power give tested sensor, and the tested sensor of control collection
Current feedback signal, by different test voltages current feedback signal or high pressure when current feedback signal, you can judge tested electricity
Whether pressure sensor is normal, realizes the intelligent test of voltage sensor, is effectively reduced fault determining time, while improving failure
The accuracy of diagnosis, diagnosis efficiency such that it is able to meet to demands such as the quick judgements of voltage sensor failure.
Description of the drawings
Fig. 1 is the principle schematic diagram. of this utility model embodiment Portable DC voltage sensor test device.
Fig. 2 is that this utility model specific embodiment Portable DC voltage sensor test device realizes that the principle of test is shown
It is intended to.
Fig. 3 is the concrete structure schematic diagram of this utility model embodiment mesohigh converting unit.
Fig. 4 is the concrete structure schematic diagram of Portable DC voltage sensor test device in this utility model embodiment.
Fig. 5 is the concrete structure principle schematic of power supply and driving plate in this utility model embodiment.
Fig. 6 is the concrete structure schematic diagram of current sampling unit in this utility model embodiment.
Marginal data：1st, device body；11st, power module；12nd, intelligent test module；121st, control unit；122nd, test
Instruction acquisition unit；123rd, high pressure converting unit；124th, working power converting unit；125th, current sampling unit.13rd, interaction is aobvious
Show module.
Specific embodiment
This utility model is further described below in conjunction with Figure of description and concrete preferred embodiment, but not because
This and limit protection domain of the present utility model.
As shown in Figure 1, 2, the present embodiment Portable DC voltage sensor test device includes device body 1, device sheet
Power module 11, intelligent test module 12 are provided with body 1, High voltage output interface, working power are provided with device body 1 defeated
Outgoing interface and current sample input interface, intelligent test module 12 receive test instruction, and control by High voltage output interface
The test voltage of grade needed for exporting, by working power output interface output power supply to tested sensor, and control
The current feedback signal of tested sensor is gathered by current sample input interface.
The above-mentioned Portable DC voltage sensor test device of the present embodiment, it is not necessary to dismantle tested voltage sensor, only
In the case of disconnecting its external circuit wiring, by High voltage output interface be connected to tested voltage sensor test voltage input,
Working power output interface is connected to the working power input of tested voltage sensor and is connected to current sample input interface
The current output terminal of tested voltage sensor can perform test, and test operation is convenient, can complete whole survey by a table apparatus
Examination process, without the need for using the equipment such as working sensor power supply and high voltage power supply in addition, device take up room it is little, be easy to it is mobile and
Carry, the testing cost needed for can reducing, while easily in repair and maintenance onsite application or performing portable detection operation.
After the above-mentioned Portable DC voltage sensor test device of the present embodiment starts test, by intelligent test module 12
Reception test instruction, the test voltage of grade needed for controlled output, working power gather tested to tested sensor, and control
The current feedback signal of sensor, by different test voltages current feedback signal or high pressure when current feedback signal, you can sentence
Whether the tested voltage sensor that breaks is normal, realizes the intelligent test of voltage sensor, and is based on centralized control, effectively can subtract
Few fault determining time, while improving the accuracy of fault diagnosis, diagnosis efficiency such that it is able to meet to voltage sensor failure
The demands such as quick judgement.
The present embodiment power module 11 specifically adopts 12V lithium battery groups, is powered by lithium battery group, it would however also be possible to employ its
The low pressure lithium battery group of his grade.
In the present embodiment, intelligent test module 12 is included control unit 121, and is connected with control unit 121 respectively
Test instruction acquisition unit 122, the high pressure converting unit that the various level estimate voltages for including high voltage power supply are exported for conversion
123rd, for changing the working power converting unit 124 and current sampling unit 125 of output power supply.Test instruction acquisition
The test for collecting instruction is sent to control unit 121 by the test instruction of 122 Real-time Collection of unit；Control unit 121 is controlled respectively
High pressure converting unit processed 123 exports the test voltage of required grade, 124 output power supply of working power converting unit and electricity
Stream sampling unit 125 gathers the output current of tested sensor.
As shown in Fig. 2 the present embodiment by power supply that lithium battery group is provided through high pressure converting unit 123 high-pressure reverse
Become conversion, test voltage (the present embodiment is specially DC0V～DC3000V) is exported through High voltage output interface, lithium battery group is carried
For power supply through working power converting unit 124, through working power output interface output power supply, (the present embodiment is concrete
For DC ± 15V), output current (the present embodiment tool of tested sensor is gathered by current sampling unit 125 from current sample interface
Body is 0mA～50mA), the malfunction of sensor is judged by the electric current for gathering.
In the present embodiment, high pressure converting unit 123 is in series by multiple voltage transformation modules, by controlling each electricity
The Access Control of pressure modular converter exports the test voltage of various grades.As shown in figure 3, the present embodiment high pressure converting unit 123
The DC/DC voltage transformation modules that 15 2V turn 200V8W are specifically included, the outfan of each DC/DC voltage transformation module is connected,
One group is constituted by per 5 DC/DC voltage transformation modules, every DC/DC voltage transformation module accesses 12V power supplys and changes output
200V voltages, the access of the input 12V by controlling each DC/DC voltage transformation modules, every group of DC/DC voltage transformation module are controllable
System output 0～1000V voltages, then can control output 200V, 400V ... ..., and the voltage of each grades of 3000V is supplied to tested voltage
Sensor.The present embodiment further can also extend connection DC/DC voltage transformation modules according to the actual requirements, with controlled output institute
Need the test voltage of scope.Voltage transformation module of the high pressure converting unit 123 by multiple series connection, it is possible to provide it is different grades of can
Pressure is heightened, so as to possess High voltage output function, and the sectional-regulated of High voltage output is capable of achieving, is met needed for direct current voltage sensor
Test voltage demand.
In the present embodiment, the input of each voltage transformation module (DC/DC) is provided with control relay, control relay
It is connected with control unit 121, by the access of control relay control voltage modular converter.As shown in figure 3, the present embodiment is each
DC/DC voltage transformation modules correspondence control relay is respectively A-1～A-15, and drive control relay A-1～A-15's cut-offs
Can grade needed for controlled output voltage.The present embodiment control relay specifically adopts DPDT type relay, certainly also
Other types relay can be adopted.The input of the present embodiment high pressure converting unit 123 is additionally provided with input relay K1, tight
Anxious button and total control switch, the outfan of each voltage transformation module (DC/DC) are provided with high-voltage diode (D-1～D-
And high-voltage capacitance (C-1～C-15) 15).
As shown in Figure 4,5, in the present embodiment, control unit 121 includes cpu control circuit, the Phototube Coupling electricity being sequentially connected
Road and drive circuit, the outfan of drive circuit are connected with each control relay respectively.Cpu control circuit receives test and refers to
The test instruction of the output of collecting unit 122 is made, and sends control signal, control signal is defeated after the isolation of photoelectric isolating circuit
Go out to drive circuit, each control relay action is driven by drive circuit.Based on the centralized Control of singlechip CPU, test operation
It is convenient, and measuring accuracy and testing efficiency can be effectively improved.
As shown in figure 4, the present embodiment cpu control circuit is by clock circuit, reset circuit, photoelectric switching circuit, driving electricity
Road etc. constitutes, and photoelectric isolating circuit specifically adopts T341 isolators, and CPU is carried out electrical isolation with I/O circuit.As shown in figure 5,
Power output circuit and drive circuit are arranged in power supply and driving plate, and drive circuit specifically adopts ULN2803 drivers, drives
The action of relay K1, K2 and A-1～A-15.CPU specifically adopts ATMEGA series processors, maximum operating frequency reach
To 32M, timer/counter can reach the operating frequency of 1M by frequency dividing, and to meet the requirement of wave capture, host CPU is adopted
Encapsulated with LQFP128.
As shown in fig. 6, current sampling unit 125 includes resistance sampling circuit, amplifier circuit in the present embodiment, resistance is adopted
Sample circuit accesses sample rate current, is exported to control unit 121 after amplifier circuit.Amplifier circuit is based on OP470GS
The amplifier circuit of chip, resistance sampling circuit are the sample circuit being made up of the power resistor of 4 metal film 2W, wherein first
Resistance Rg is connected with 3rd resistor Rd, the 4th resistance Ra respectively with the two ends after the parallel connection of second resistance Rh, and 3rd resistor Rd passes through
5th resistance Rb is connected to the in-phase end of amplifier, and the 4th resistance Ra is connected to the end of oppisite phase of amplifier by the 6th resistance Re.
The electric current that current sampling unit 125 is sampled is exported is sampled to the AD conversion passage of CPU.
In the present embodiment, intelligent test module 12 is also included for storing the memory element of current feedback signal result, deposits
Storage unit is connected with control unit 121, current sampling unit 125 respectively.The store function of test data is realized by memory element,
It is easy to test data to perform subsequent treatment.Memory element is specially the external memory circuit of CPU.
In the present embodiment, it is additionally provided with device body 1 for receiving test instruction and showing the interaction of test result
Display module 13, interactive display module 13 are connected with intelligent test module 12.Interactive display module 13 is specially display screen, CPU
Display interface circuit is set, is connected with display screen by RS232 modes, to realize that man-machine interaction mode centralized Control was tested
Journey, in that context it may be convenient to setting test instruction, display test result.Display screen specifically adopts LCD liquid crystal display screens.
When above-mentioned test device performs test, display screen sends control instruction after receiving test instruction, is received by CPU and is referred to
Order, test voltage needed for drive control relay (A-1～A-10) controlled output, controls whether starting current collecting unit
The feedback current of the tested sensor of 123 collections, and whether output transducer works to control startup working power converting unit 124
Power supply etc., the electric current for collecting is compared with tested voltage sensor curve of output, you can obtain under different test voltages
Tested voltage sensor whether failure, then by serial ports feedback abnormality to display screen when test is abnormal.
In the present embodiment, external connection interface on device body 1, is additionally provided with；External connection interface is specially USB interface,
Transmitting test data, such as printing test data etc. can be easy to by USB interface.
Above-mentioned simply preferred embodiment of the present utility model, not makees any pro forma restriction to this utility model.Though
So this utility model is disclosed above with preferred embodiment, but is not limited to this utility model.Therefore, it is every without departing from
The content of technical solutions of the utility model, any simply repaiies to made for any of the above embodiments according to this utility model technical spirit
Change, equivalent variations and modification, all should fall in the range of technical solutions of the utility model protection.
Claims (10)
1. a kind of Portable DC voltage sensor test device, it is characterised in that including device body (1), described device body
(1) in be provided with power module (11), intelligent test module (12), be provided with described device body (1) High voltage output interface,
Working power output interface and current sample input interface, the intelligent test module (12) receive test instruction, and control
By the test voltage of the required grade of High voltage output interface output, by working power output interface output services electricity
Source gathers the current feedback signal of tested sensor to tested sensor, and control by the current sample input interface.
2. Portable DC voltage sensor test device according to claim 1, it is characterised in that：The intelligent test
Module (12) includes control unit (121), and the test instruction acquisition unit that is connected with described control unit (121) respectively
(122), for change output include high voltage power supply various level estimate voltages high pressure converting unit (123), for changing
The working power converting unit (124) and current sampling unit (125) of output power supply.
3. Portable DC voltage sensor test device according to claim 2, it is characterised in that：The high pressure conversion
Unit (123) is in series by multiple voltage transformation modules, by the Access Control for controlling each voltage transformation module
Export the test voltage of various grades.
4. Portable DC voltage sensor test device according to claim 3, it is characterised in that：Each described voltage
The input of modular converter is provided with control relay, and the control relay is connected with described control unit (121), by institute
State the access that control relay controls the voltage transformation module.
5. Portable DC voltage sensor test device according to claim 4, it is characterised in that：Described control unit
(121) including the cpu control circuit, photoelectric isolating circuit and drive circuit being sequentially connected, the outfan of the drive circuit
It is connected with control relay each described respectively.
6. Portable DC voltage sensor test device according to claim 5, it is characterised in that：The current sample
Unit (125) includes resistance sampling circuit, amplifier circuit, and the resistance sampling circuit accesses sample rate current, puts through described
Export after big device circuit and give described control unit (121).
7. Portable DC voltage sensor test device according to claim 6, it is characterised in that：The intelligent test
Module (12) also includes that for storing the memory element of current feedback signal result the memory element is single with the control respectively
First (121), current sampling unit (125) connection.
8. the Portable DC voltage sensor test device according to any one in claim 1～7, its feature exist
In：It is additionally provided with described device body (1) for receiving test instruction and showing the interactive display module of test result
(13), the interactive display module (13) is connected with the intelligent test module (12).
9. Portable DC voltage sensor test device according to claim 8, it is characterised in that：Described device body
(1) external connection interface is additionally provided with；The external connection interface is USB interface.
10. the Portable DC voltage sensor test device according to any one in claim 1～7, its feature exist
In：The power module (11) is lithium battery group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621082266.6U CN206057547U (en) | 2016-09-26 | 2016-09-26 | A kind of Portable DC voltage sensor test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621082266.6U CN206057547U (en) | 2016-09-26 | 2016-09-26 | A kind of Portable DC voltage sensor test device |
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| CN206057547U true CN206057547U (en) | 2017-03-29 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108762141A (en) * | 2018-05-24 | 2018-11-06 | 常州工学院 | A kind of portable SSI interface data solution analyzer based on FPGA |
| CN109738174A (en) * | 2019-02-01 | 2019-05-10 | 贵州精工利鹏科技有限公司 | A kind of multifunction aircraft operating stick testboard |
| CN111459205A (en) * | 2020-04-02 | 2020-07-28 | 四川三联新材料有限公司 | Heating appliance control system based on reinforcement learning |
-
2016
- 2016-09-26 CN CN201621082266.6U patent/CN206057547U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108762141A (en) * | 2018-05-24 | 2018-11-06 | 常州工学院 | A kind of portable SSI interface data solution analyzer based on FPGA |
| CN109738174A (en) * | 2019-02-01 | 2019-05-10 | 贵州精工利鹏科技有限公司 | A kind of multifunction aircraft operating stick testboard |
| CN111459205A (en) * | 2020-04-02 | 2020-07-28 | 四川三联新材料有限公司 | Heating appliance control system based on reinforcement learning |
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