CN206905940U - A kind of thermistor steady-state current test instrument - Google Patents
A kind of thermistor steady-state current test instrument Download PDFInfo
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- CN206905940U CN206905940U CN201720921496.5U CN201720921496U CN206905940U CN 206905940 U CN206905940 U CN 206905940U CN 201720921496 U CN201720921496 U CN 201720921496U CN 206905940 U CN206905940 U CN 206905940U
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- test instrument
- state current
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Abstract
The utility model is a kind of thermistor steady-state current test instrument, including fuselage and the panel that is connected on fuselage；Table top is provided with the fuselage, binding post and knob of transferring the files are provided with the table top, is provided with starting switch, start button, stop button, counter, two time relays, ammeter and voltmeter on the panel；Two time relays are respectively very first time relay and second time relay.This product not only regulating power, meets the detection needs of different products, can implement automatically, process automatically completes；This product is simple in construction, and it is convenient to realize, single can detect multiple resistance simultaneously.This test instrument designs according to the demand of research and development and client, and detection product continuously works under the steady-state current of setting, working condition of the detection thermistor under continuous current.
Description
Technical field
It the utility model is related to electric elements detection means, and in particular to thermistor device for detecting performance.
Background technology
, will with meet market and client in order to research and develop the needs with product up-gradation, it is necessary to improve the performance of thermistor
Ask.While the material and processing technology of thermistor is improved, it is also necessary to which the tester of a product, there is presently no this
A kind of instrument for being used to test, the instrument requirements can continuous firings in the steady state, there is provided and multiple power selects, and preferably
It is automatic to carry out.The instrument requirements can test the maximum operating currenbt of the maximum steady state electric current, i.e. thermistor of thermistor.
Utility model content
In order to overcome the above-mentioned deficiency of prior art, the purpose of this utility model is to provide a kind of thermistor stable state electricity
Test instrument is flowed, the thermistor steady-state current test instrument can be tested continuously thermistor, simple in construction, user
Just, and multiple resistance can be tested simultaneously.
The utility model realizes that the technical scheme of above-mentioned purpose is：
A kind of thermistor steady-state current test instrument, including fuselage and the panel that is connected on fuselage；On the fuselage
Table top is provided with, binding post and knob of transferring the files are provided with the table top, starting switch is provided with the panel, starts
Button, stop button, counter, two time relays, ammeter and voltmeter；Two time relays are respectively
Very first time relay and second time relay；
It is provided with controller in the fuselage, described starting switch one end electric connection of power supply, described in other end electrical connection
Controller；The start button, stop button, counter, very first time relay, second time relay, ammeter, voltage
Table and knob of transferring the files electrically connect with the controller；Very first time relay and second time relay are separately positioned on back
On two branch roads in road.
The controller is PLC modules or micro computer.
The knob of transferring the files is the first knob and the second knob respectively for two.
First knob is in parallel with second knob.
First knob is connected with second knob.
There are five groups of wiring points on the binding post, this five groups of wiring points are parallel with one another and connected with the controller.
The controller is electrically connected with capacitance component, and the capacitance component includes multiple electric capacity parallel with one another two-by-two.
The utility model has following beneficial effect compared with prior art：
This product not only regulating power, meets the detection needs of different products, can implement automatically, and it is complete to cross process automation
Into；This product is simple in construction, and it is convenient to realize, single can detect multiple resistance simultaneously.This test instrument is according to research and development and the need of client
Ask and design, detection product continuously works under the steady-state current of setting, work shape of the detection thermistor under continuous current
State, and the size of the continuous current can adjust.
Brief description of the drawings
Fig. 1 is dimensional structure diagram of the present utility model；
Fig. 2 is main circuit diagram of the present utility model.
Embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment：
A kind of thermistor steady-state current test instrument, including fuselage 1 and connection panel 3 on the fuselage 1；In the fuselage
Table top 2 is provided with 1, binding post 4 and knob of transferring the files are provided with the table top 2, being provided with startup on the panel 3 opens
Close 81, start button 82, stop button 83,6, two time relays of counter, ammeter 71 and voltmeter 72；Two institutes
It is respectively the time relay 52 of very first time relay 51 and second to state the time relay；
Controller, one end electric connection of power supply of starting switch 81, other end electrical connection institute are provided with the fuselage 1
State controller；The start button 82, stop button 83, counter 6, very first time relay 51, second time relay 52,
Ammeter 71, voltmeter 72 and knob of transferring the files electrically connect with the controller；The time of very first time relay 51 and second
Relay 52 is separately positioned on two branch roads in loop.
The controller is PLC modules or micro computer.
The knob of transferring the files is the first knob 91 and the second knob 92 respectively for two.
First knob 91 is in parallel with second knob 92, the state between the first knob and the second knob now
Do not interact, the neutral of the first knob and the second knob is off state.
Another scheme, first knob 91 are connected with second knob 92, now set the neutral of the second knob
For short-circuit condition, but the neutral of the first knob is off state.
There are five groups of wiring points on the binding post 4, this five groups of wiring points are parallel with one another and connected with the controller.
The controller is electrically connected with capacitance component, and the capacitance component includes multiple electric capacity parallel with one another two-by-two.
As Fig. 2, Fig. 2 show the major part of circuit diagram of the present utility model.The utility model is made up of two loops, this
Two loops are respectively major loop and subloop, and major loop is connected by bridge heap 104 with subloop.101 in Fig. 2 be electric capacity gear selecting
Switch, 102 be that electric furnace gear selecting switchs, and 103 be tested NTC, and NTC is thermistor (similarly hereinafter).It can be seen that voltmeter 72
Main circuit voltage is measured, the electric current of branch road where ammeter 71 measures each wiring point.Set respectively on the two poles of the earth of main branch
There are very first time relay and second time relay, miniature circuit breaker 105 is additionally provided with main branch, the miniature circuit breaker
Power switch as this test instrument.Two relays in figure also electrically connect controller, it is illustrated that middle controller is PLC modules.
The setting of electric capacity gear selecting switch in Fig. 2, is to surge is produced in circuit, produce the surge current of moment, observe the electricity
Flow down NTC working condition.Such as Fig. 1, generally, the first knob 91 is adjusted, select a suitable power gear, also
It is the gear of the electric furnace gear selecting switch in Fig. 2, tested thermistor is placed on the joint of binding post, closes starting switch
81, stable electric current is now just had in circuit, starts start button, very first time relay starts timing.
Such as Fig. 1, the present embodiment uses 6 grades of power selections, and the first knob has three power gears, and the second knob has other three
Individual power gear.Each grade of resistance value can according to circumstances be set, and because voltage constant is 220V, changing resistance value can also change
Variable power, the present embodiment use following setting value, and three shelves of the first knob are respectively 100W, 150W and 200W, the second knob
Three shelves be respectively 500W, 1000W and 2000W.Fig. 1 middle connecting terminals are provided with five wiring points, between five wiring points
Parallel with one another, each wiring point connects a tested NTC.Such as Fig. 2, electric capacity gear selecting switch 101 described in the utility model has 14,
I.e. 14 grades selections；Electric furnace gear selecting switch 102 has 6, i.e., 6 grades selections.Electric capacity gear selecting switch in the utility model is standby, is connect
During the appearance that is powered gear selecting switch, the utility model can be used for the maximum capacity for testing thermistor.
Operation principle of the present utility model is：
With reference to Fig. 1 and Fig. 2 and the above, a NTC is connected on a wiring point of binding post 4, to this
NTC steady-state current is tested.The power supply of the firing test instrument of starting switch 81 is closed, sets the number of counter, setting control
The program of device PLC modules processed, i.e. setting program control the energization period of very first time relay, the power-off of second time relay
Duration；First knob and the regulation of the second knob press start button 82, test instrument is started working to the power needed.For example, the
One knob is set in 100W gear, and the first knob and the second knob are parallel relationship, and the second knob is neutral, now by calorimetric
The operating power of quick resistance is the electric current corresponding to 100W, and the relay time very first time sets 24 hours, the second time relay
The device time sets 1 hour, stable continuous firing.After test instrument starts, relay starts timing, disconnects within every 24 hours, then every 1 small
Shi Tong electricity, so move in circles, testing time is 3 times.Very first time relay was used to record when the time of primary current impact, the
Two time relays are used to record the cool time when Secondary Shocks, and counter is used for the test job number for recording experimental products.
If thermistor damages in test process, illustrate the work being unsatisfactory under the power of setting, do not reach the requirement of design；Phase
Instead, experienced more than ten hour even tens hours test after, thermistor appoint so it is intact, illustrate that performance conforms to
Ask.
After the test of above-mentioned steps, the steady-state current of single sample is judged；This test instrument can also carry out five simultaneously
Individual NTC test, it is only necessary to five NTC are connected on five wiring points of binding post, the specific steps of test with
Method is same as described above.
Embodiment not limited to this of the present utility model, according to the above of the present utility model, utilizes the general of this area
Logical technological know-how and customary means, under the premise of the above-mentioned basic fundamental thought of the utility model is not departed from, the utility model may be used also
To make the modification of other diversified forms, replacement or change, all fall within the utility model rights protection scope.
Claims (7)
- A kind of 1. thermistor steady-state current test instrument, it is characterised in that：Including fuselage (1) and the face being connected on fuselage (1) Plate (3)；Table top (2) is provided with the fuselage (1), binding post (4) and knob of transferring the files are provided with the table top (2), Be provided with the panel (3) starting switch (81), start button (82), stop button (83), counter (6), two when Between relay, ammeter (71) and voltmeter (72)；Two time relays are respectively very first time relay (51) With second time relay (52)；Controller, described starting switch (81) one end electric connection of power supply, other end electrical connection institute are provided with the fuselage (1) State controller；The start button (82), stop button (83), counter (6), very first time relay (51), the second time Relay (52), ammeter (71), voltmeter (72) and knob of transferring the files electrically connect with the controller；Very first time relay Device (51) and second time relay (52) are separately positioned on two branch roads in loop.
- A kind of 2. thermistor steady-state current test instrument according to claim 1, it is characterised in that：The controller is PLC modules or micro computer.
- A kind of 3. thermistor steady-state current test instrument according to claim 1, it is characterised in that：The knob of transferring the files is Two, be the first knob (91) and the second knob (92) respectively.
- A kind of 4. thermistor steady-state current test instrument according to claim 3, it is characterised in that：First knob (91) it is in parallel with second knob (92).
- A kind of 5. thermistor steady-state current test instrument according to claim 3, it is characterised in that：First knob (91) connected with second knob (92).
- A kind of 6. thermistor steady-state current test instrument according to claim 4 or 5, it is characterised in that：The terminals There are five groups of wiring points on sub (4), this five groups of wiring points are parallel with one another and connected with the controller.
- A kind of 7. thermistor steady-state current test instrument according to claim 1, it is characterised in that：The controller is electrically connected Capacitance component is connected to, the capacitance component includes multiple electric capacity parallel with one another two-by-two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720921496.5U CN206905940U (en) | 2017-07-27 | 2017-07-27 | A kind of thermistor steady-state current test instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720921496.5U CN206905940U (en) | 2017-07-27 | 2017-07-27 | A kind of thermistor steady-state current test instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206905940U true CN206905940U (en) | 2018-01-19 |
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ID=61312297
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720921496.5U Active CN206905940U (en) | 2017-07-27 | 2017-07-27 | A kind of thermistor steady-state current test instrument |
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| CN (1) | CN206905940U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111537777A (en) * | 2020-04-13 | 2020-08-14 | 深圳欣旺达智能科技有限公司 | Automatic testing method and device for thermistor failure current |
-
2017
- 2017-07-27 CN CN201720921496.5U patent/CN206905940U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111537777A (en) * | 2020-04-13 | 2020-08-14 | 深圳欣旺达智能科技有限公司 | Automatic testing method and device for thermistor failure current |
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| CP03 | Change of name, title or address |
Address after: 515000, Pearl Street, Longhu District, Guangdong, Shantou Patentee after: Guangdong Xincheng Technology Industry Co., Ltd Address before: 515041 No. 2 East North Street, Zhujiang Road, Shantou, Guangdong, Taishan Patentee before: SHANTOU XINCHENG ELECTRONIC TECHNOLOGY Co.,Ltd. |