CN206740894U - A kind of wink break time detector with 1 μ s detectabilities - Google Patents
A kind of wink break time detector with 1 μ s detectabilities Download PDFInfo
- Publication number
- CN206740894U CN206740894U CN201720645625.2U CN201720645625U CN206740894U CN 206740894 U CN206740894 U CN 206740894U CN 201720645625 U CN201720645625 U CN 201720645625U CN 206740894 U CN206740894 U CN 206740894U
- Authority
- CN
- China
- Prior art keywords
- module
- switch
- charge
- trigger
- discharge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses a kind of wink break time detector with 1 μ s detectabilities, it is related to electronic technology field, the wink break time detector includes：Switch module, charge-discharge modules, comparison module, trigger module and reminding module, switch module include switch element；The control terminal of switch module connects power end by measured switch, measured switch is normally closed switch, the positive input terminal of the output end connection comparison module of switch module, the input connection power end of charge-discharge modules, the output end connection positive input terminal of charge-discharge modules, the negative input end connection reference power source end of comparison module, the clock end of the output end connection trigger module of comparison module, the output end connection reminding module of trigger module；Wink break time detection instrument circuit is simple, reliable operation, judges that the time is accurate, it is possible to achieve the judgement to 1 μ s wink break times, and autgmentability is strong, and the judgement to other wink break times can be realized by the parameter of device in adjustment circuit.
Description
Technical field
Electronic technology field is the utility model is related to, especially a kind of wink break time detector with 1 μ s detectabilities.
Background technology
Required according to the standards of GB5095.2-1997, the member with mechanical contact such as switch, potentiometer, connector and relay
Device, vibrating, impact and collide etc. under mechanical test environmental condition, the break-make situation of contact is monitored, judge wink
Whether interruption ETAD expected time of arrival and departure is above standard.But it is now most of to require 1 μ s transient OFF times of detection, because the time is shorter, at present
Detector be all unable to reach this requirement.
Utility model content
The present inventor is regarding to the issue above and technical need, it is proposed that a kind of wink break time with 1 μ s detectabilities is examined
Survey instrument, it is possible to achieve the detection to 1 μ s transient OFF times.
The technical solution of the utility model is as follows：
A kind of wink break time detector with 1 μ s detectabilities, the wink break time detector include：Switch module, fill
Discharge module, comparison module, trigger module and reminding module, switch module include switch element, switch element be triode or
Metal-oxide-semiconductor, charge-discharge modules include electric capacity, and comparison module includes comparator, and trigger module includes trigger；The control of switch module
End processed connects power end by measured switch, and measured switch is normally closed switch, and the output end of switch module connects comparison module
Positive input terminal, charge-discharge modules input connection power end, charge-discharge modules output end connection positive input terminal, compare mould
The negative input end connection reference power source end of block, the clock end of the output end connection trigger module of comparison module, trigger module it is defeated
Go out end connection reminding module.
Its further technical scheme is that switch module includes the enhanced metal-oxide-semiconductor of N-channel, and the grid of metal-oxide-semiconductor is switching molding
The control terminal of block, metal-oxide-semiconductor drain as the output end of switch module, the source ground of metal-oxide-semiconductor.
Its further technical scheme is that charge-discharge modules include charging resistor and charge and discharge capacitance, and charging resistor is with filling
Discharge capacity is connected, and one end of the series circuit is the input of charge-discharge modules, other end ground connection, charging resistor and discharge and recharge
The common port of electric capacity is the output end of charge-discharge modules.
Advantageous effects of the present utility model are：
Wink break time detector disclosed in the utility model can with the break-make situation of the contact of effective detection measured switch, and
Circuit is simple, reliable operation, judges that the time is accurate, can detect 1 μ s wink break times.In addition, circuit extension of the present utility model
Property is strong, and by the parameter of each device in adjustment circuit, the wink break time of other time length can be judged.
Brief description of the drawings
Fig. 1 is the circuit structure diagram of wink break time detector of the present utility model.
Fig. 2 is the circuit diagram of one embodiment of wink break time detector.
Embodiment
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings.
Fig. 1 is refer to, it illustrates the circuit knot of the wink break time detector with 1 μ s detectabilities disclosed in the present application
Composition, the wink break time detector include switch module, charge-discharge modules, comparison module, trigger module and reminding module.
Switch module includes switch element, and switch element is triode or metal-oxide-semiconductor, and the control terminal of switch module passes through to be measured
Switch K connections power end Uc, measured switch K are normally closed switch, and the output end of switch module connects the positive input of comparison module
End, measured switch K be the component with mechanical contact such as switch, potentiometer, connector and relay include need to detect
The switch of break-make situation.
Charge-discharge modules include electric capacity, the input connection power end Uc of charge-discharge modules, the output of charge-discharge modules
The positive input terminal of end connection comparison module.
Comparison module includes comparator, the negative input end connection reference power source end Uref of comparison module.
Trigger module includes trigger, the clock end of the output end connection trigger module of comparison module, trigger module it is defeated
Go out end connection reminding module.
It is related to specific circuit structure, the utility model there can be numerous embodiments, typical real with one below
Example is applied to illustrate particular circuit configurations and operation principle of the present utility model, refer to Fig. 2.
Switch module includes the enhanced metal-oxide-semiconductor of N-channel, and in the present embodiment, the metal-oxide-semiconductor is BS170 FETs, should
The grid of metal-oxide-semiconductor is the control terminal of switch module, and the drain electrode of the metal-oxide-semiconductor is the output end of switch module, and the source electrode of the metal-oxide-semiconductor connects
Ground.The grid connection measured switch K and second resistance R2 of the metal-oxide-semiconductor, the positive input of the drain electrode connection comparison module of the metal-oxide-semiconductor
End, second resistance R2 other end ground connection, the measured switch K other end is by first resistor R1 connection power end Uc, in this reality
Apply in example, power end Uc offer+5V voltages, R1=100 Ω, R2=1k Ω.
Charge-discharge modules include charging resistor R and charge and discharge capacitance C, and charging resistor R connects with charge and discharge capacitance C, the string
The one end for joining circuit is the input of charge-discharge modules, connects power end Uc, the other end ground connection of the series circuit, charging resistor
R and charge and discharge capacitance C common port are the output end of charge-discharge modules, connect the positive input terminal of comparison module.In this embodiment,
Charging resistor R is accurate noninductive resistance, and R=150 Ω, charge and discharge capacitance C are precision capacitance, C=0.01 μ F.
Comparison module includes comparator, and in the present embodiment, comparator is that LM119 is double high-speed comparator, the comparator
A feeder ear connection power end Uc, by+5V power ends carry out single supply power supply, another feeder ear of the comparator and
One earth terminal is grounded respectively.The negative input end connection reference power source end Uref of comparator, in the present embodiment, using resistance point
Laminated structure provides reference power source end Uref, and 3rd resistor R3 connects with potentiometer Rp, and one end of the series circuit connects power end
Uc, other end ground connection, potentiometer Rp sliding end ground connection, 3rd resistor R3 and potentiometer Rp common port is reference power source end
Uref, the negative input end of comparator is connected, by adjusting potentiometer Rp, reference power source end Uref voltage can be adjusted.At this
In embodiment, 3rd resistor R3 resistance R3=1k Ω, potentiometer Rp are 10k Ω multiturn potentiometer.
Trigger module includes trigger, and trigger is 74HC74 type double D triggers, and the output end of comparator connects the triggering
The clock end of device, namely the CK pin of the trigger, the output end of comparator are also connected with the 4th resistance R4, the other end of the 4th resistance
Connect power end Uc, the resistance R4=1k Ω of the 4th resistance.The D pin connection power end Uc of the trigger, the S pin of the trigger connect
Power end Uc is met, the R ends of the trigger connect the 5th resistance R5, the 5th resistance R5 other end connection power end Uc, the 5th electricity
R5 resistance R5=1k Ω are hindered, the R ends of the trigger are also connected with the reset switch K0 that fails, the failure reset switch K0 other end
Ground connection.
Reminding module includes light emitting diode (Light Emitting Diode, LED) and buzzer etc., the present embodiment with
Exemplified by reminding module includes light emitting diode, the inverse output terminal Q of one end connection trigger of the light emitting diode, the other end connects
Meet the 6th resistance R6, the 6th resistance the R6 other end connection power end Uc, the resistance R6=300 Ω of the 6th resistance.
The operation principle of the circuit is：
Under normal circumstances, measured switch K is closed always, and BS170MOS tube grids voltage is higher than threshold voltage, its drain and
Source conduction, the voltage U (t) of the drain electrode output of the metal-oxide-semiconductor is close to 0V, and now U (t) point voltages are less than reference power source end Uref's
Voltage, comparator output low level, trigger are not triggered, and the positive output of the trigger is low level, and reversely output is high electricity
Flat, light emitting diode does not work.
When measured switch K disconnects moment, the negative pulse that one pulse width of generation is T, this pulse causes BS170MOS to manage
Drain electrode and source electrode quickly end (BS170MOS pipe switch times are less than 10ns), and+5V power ends Uc passes through R pairs of charging resistor simultaneously
Charge and discharge capacitance C is charged, then the voltage U (t) of input comparator positive input terminal is constantly risen by regular hour functional relation, such as
Fruit measured switch K wink break times T is longer, when the voltage U (t) of positive input terminal is more than reference power source end Uref voltage, compares
Device output is changed into high level and instantaneously triggers d type flip flop, then the positive output high level of d type flip flop, reversely exports low level, and luminous two
Pole pipe is bright and keeps, for prompting measured switch K to fail.If measured switch K wink break times T is shorter, the electricity of positive input terminal
When pressure U (t) is also not reaching to reference power source end Uref voltage, the drain electrode of metal-oxide-semiconductor and source electrode fast conducting, charge and discharge capacitance C
Rapid electric discharge, the voltage U (t) of positive input terminal and is not triggered close to 0V, trigger, and light emitting diode keeps not working.
The speed that the voltage U (t) of the positive input terminal of comparator rises determines by charge constant RC, reference power source end
Uref voltage judges the voltage amplitude risen, and as the above analysis, measured switch K wink break times T judgement is by charging electricity
Resistance R, charge and discharge capacitance C and reference power source end Uref voltage together decide on, and by calculating, relational expression is：T=-RCln (1-
Uref/Uc), wherein, T represents measured switch K wink break time；R be charging resistor resistance value, unit Ω；C is discharge and recharge
The capacitance of electric capacity, unit are μ F；Uref is the magnitude of voltage at reference power source end, unit V；Uc is the magnitude of voltage of power end, single
Position is V.In the present embodiment, when to take charging resistor R be 150 Ω, charge and discharge capacitance C is 0.01 μ F, power end Uc magnitude of voltage
When being transferred to 2.435V for 5V, reference power source end Uref voltage, hit judges that time T is 1 μ s, in actual applications, Ke Yitong
The appropriate value for choosing charging resistor R and charge and discharge capacitance C is crossed, then the wink break time detector can be carried out to other wink break times
Judge.
Above-described is only preferred embodiment of the present utility model, and the utility model is not limited to above example.Can
To understand, what those skilled in the art directly exported or associated on the premise of spirit of the present utility model and design is not departed from
Other improvement and change, it is considered as being included within the scope of protection of the utility model.
Claims (3)
1. a kind of wink break time detector with 1 μ s detectabilities, it is characterised in that the wink break time detector includes：
Switch module, charge-discharge modules, comparison module, trigger module and reminding module, the switch module includes switch element, described
Switch element is triode or metal-oxide-semiconductor, and the charge-discharge modules include electric capacity, and the comparison module includes comparator, described
Trigger module includes trigger；The control terminal of the switch module connects power end by measured switch, and the measured switch is
Normally closed switch, the output end of the switch module connect the positive input terminal of the comparison module, the charge-discharge modules it is defeated
Enter end and connect the power end, the output ends of the charge-discharge modules connects the positive input terminal, the comparison module it is negative defeated
Enter end connection reference power source end, the output end of the comparison module connects the clock end of the trigger module, the trigger module
Output end connect the reminding module.
2. wink break time detector according to claim 1, it is characterised in that the switch module strengthens including N-channel
Type metal-oxide-semiconductor, the grid of the metal-oxide-semiconductor are the control terminal of the switch module, and the drain electrode of the metal-oxide-semiconductor is the switch module
Output end, the source ground of the metal-oxide-semiconductor.
3. wink break time detector according to claim 1, it is characterised in that the charge-discharge modules include charging resistor
And charge and discharge capacitance, the charging resistor are connected with the charge and discharge capacitance, one end of the series circuit is the discharge and recharge mould
The common port of the input of block, other end ground connection, the charging resistor and the charge and discharge capacitance is the charge-discharge modules
Output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720645625.2U CN206740894U (en) | 2017-06-05 | 2017-06-05 | A kind of wink break time detector with 1 μ s detectabilities |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720645625.2U CN206740894U (en) | 2017-06-05 | 2017-06-05 | A kind of wink break time detector with 1 μ s detectabilities |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206740894U true CN206740894U (en) | 2017-12-12 |
Family
ID=60568770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720645625.2U Active CN206740894U (en) | 2017-06-05 | 2017-06-05 | A kind of wink break time detector with 1 μ s detectabilities |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206740894U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918974A (en) * | 2018-09-14 | 2018-11-30 | 广州赛宝计量检测中心服务有限公司 | Transient resistance value measuring circuit and high speed hit tester |
| CN111641406A (en) * | 2020-06-30 | 2020-09-08 | 湖南中车时代通信信号有限公司 | Power-off restart automatic control circuit |
| CN116298838A (en) * | 2022-12-29 | 2023-06-23 | 苏州赛芯电子科技股份有限公司 | Main switch detection circuit and battery system |
-
2017
- 2017-06-05 CN CN201720645625.2U patent/CN206740894U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918974A (en) * | 2018-09-14 | 2018-11-30 | 广州赛宝计量检测中心服务有限公司 | Transient resistance value measuring circuit and high speed hit tester |
| CN111641406A (en) * | 2020-06-30 | 2020-09-08 | 湖南中车时代通信信号有限公司 | Power-off restart automatic control circuit |
| CN116298838A (en) * | 2022-12-29 | 2023-06-23 | 苏州赛芯电子科技股份有限公司 | Main switch detection circuit and battery system |
| CN116298838B (en) * | 2022-12-29 | 2023-10-03 | 苏州赛芯电子科技股份有限公司 | Main switch detection circuit and battery system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206740894U (en) | A kind of wink break time detector with 1 μ s detectabilities | |
| CN101793943B (en) | Intelligent type test system for service life of fuses | |
| CN105826963B (en) | A kind of method, charging circuit and terminal for detecting cell voltage | |
| CN106526476B (en) | Synchronous control device and method for power frequency follow current interruption capability test synthesis loop | |
| CN104865513A (en) | Surge current testing circuit with function of detection | |
| CN202034765U (en) | Switch power source short circuit protection circuit | |
| CN206489401U (en) | A kind of Switch Control device tested for switching on and shutting down | |
| CN109090710A (en) | A kind of atomizer resistance value detection circuit | |
| CN203398784U (en) | Reversal connection protection circuit of battery charging circuit | |
| CN108761162A (en) | A kind of oscilloprobe control system and method | |
| CN204836131U (en) | Effective switch input signal acquisition circuit of high level | |
| CN204945993U (en) | A kind of watchdog circuit being applicable to Safety output | |
| CN204068684U (en) | For the current foldback circuit of power device | |
| CN103401220A (en) | Novel switch power supply short-circuit protection circuit and protection method | |
| CN110824399B (en) | Remote online monitoring system and method for lightning arrester discharge counter | |
| CN103163358A (en) | Fast and reliable alternative current power failure detection circuit | |
| CN209486164U (en) | Microcontroller power supply low-voltage detection circuit without A D interface and internal reference voltage | |
| CN203929854U (en) | Voltage magnitude testing circuit | |
| CN207602978U (en) | Semiconductor integrated circuit | |
| CN207007980U (en) | A kind of AC dump detects circuit | |
| CN105116200A (en) | Detection circuit compatible with switching value and level amount | |
| CN201498978U (en) | Battery over-discharge protection circuit | |
| CN104596599A (en) | Excitation high-voltage automatic control device | |
| CN202586331U (en) | Constant current source protection circuit | |
| CN203537638U (en) | Safe light-emitting circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 214073 Wuxi Jinshui Road, Jiangsu, No. 100 Patentee after: Jiangsu electronic information product quality supervision and Inspection Research Institute (Jiangsu Information Security Evaluation Center) Address before: 214073 Wuxi Jinshui Road, Jiangsu, No. 100 Patentee before: JIANGSU ELECTRONIC INFORMATION PRODUCTS QUALITY SUPERVISION INSPECTION Research Institute |
|
| CP01 | Change in the name or title of a patent holder |