CN206420541U - A kind of liquid level sensor device for detecting performance - Google Patents
A kind of liquid level sensor device for detecting performance Download PDFInfo
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- CN206420541U CN206420541U CN201621313879.6U CN201621313879U CN206420541U CN 206420541 U CN206420541 U CN 206420541U CN 201621313879 U CN201621313879 U CN 201621313879U CN 206420541 U CN206420541 U CN 206420541U
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Abstract
The utility model discloses a kind of liquid level sensor device for detecting performance, the crust of the device is provided with temperature sensor and eight connection terminals, provided with first resistor Acquisition Circuit, voltage collection circuit, current collection circuit, second resistance Acquisition Circuit and alarm signal Acquisition Circuit and temperature collection circuit in device, eight connection terminals are respectively resistance, voltage, electric current, high potential alarm and low potential alarm signal connection terminal, and dc source+5V ,+24V terminals and dc source ground COM terminals.Resistance, voltage, current connection terminal are connected with electrical resistance collection circuit, voltage collection circuit, current collection circuit successively；High potential is alarmed and low potential alarm signal connection terminal is connected with alarm signal Acquisition Circuit, and temperature sensor is connected with temperature collection circuit；Whether the function that the utility model can easily test float-type tongue tube liquid level sensor is normal；Easily realize full inspection, it is ensured that product quality.
Description
Technical field
The utility model patent is related to a kind of liquid level sensor device for detecting performance, and in particular to be a kind of float-type do
The performance detection apparatus of reed pipe liquid level sensor.
Background technology
Float-type tongue tube liquid level sensor is as shown in figure 1, be one kind in the numerous types of liquid level sensor, because installing letter
List, no-spark, service life length and it is non-maintaining the characteristics of, be widely used in various liquid level automatic detections, such as automobile fires
The automatic detection of level of beverage in oil tank liquid level, water dispenser or coffee machine.Its operation principle is as shown in Fig. 2 float is built with magnetic
Ring, as liquid level is moved up and down, the tongue tube adhesive in control metal tube disconnects, and becomes so that resistance is linear in sensor
Change, output resistance signal, standard voltage signal or standard current signal output can be also converted to by converter.
, may be defeated caused by tongue tube is damaged or encapsulates error in float-type tongue tube liquid level sensor manufacturing process
Go out signal and do not meet design requirement, it is necessary to carry out performance test.The mode of conventionally employed universal meter test output signal is simple,
Data can not be recorded automatically, and efficiency is low, not meet high-volume automated production and the retrospective demand of automobile product test record.
The content of the invention
There is provided a kind of liquid level sensor automatic performance detection means in view of the shortcomings of the prior art for the utility model.
A kind of liquid level sensor automatic performance detection means, the crust of the device is provided with temperature sensor and eight connections
Terminal, in device provided with first resistor Acquisition Circuit, voltage collection circuit, current collection circuit, second resistance Acquisition Circuit and
Alarm signal Acquisition Circuit and temperature collection circuit；Eight connection terminals are respectively resistance, voltage, electric current, high potential
Alarm and low potential alarm signal connection terminal, and dc source+5V ,+24V terminals and dc source ground COM terminals.Electricity
Resistance, voltage, current connection terminal are connected with electrical resistance collection circuit, voltage collection circuit, current collection circuit successively；High potential report
Alert and low potential alarm signal connection terminal is connected with alarm signal Acquisition Circuit, and temperature sensor connects with temperature collection circuit
Connect；First resistor Acquisition Circuit, voltage collection circuit, current collection circuit, second resistance Acquisition Circuit, alarm signal collection electricity
Road, the signal output termination standard data acquisition board of temperature collection circuit.
The beneficial effects of the utility model：The function of float-type tongue tube liquid level sensor can easily be tested whether just
Often；Easily realize full inspection, it is ensured that product quality；Testing result truly reflects the electric property of sensor.
Brief description of the drawings
Fig. 1 is float-type tongue tube liquid level sensor structural representation；
Fig. 2 is float-type tongue tube liquid level sensor fundamental diagram；
Fig. 3 is system and device figure；
Fig. 4 is test elementary diagram；
Fig. 5 is signal waveforms.
Embodiment
The utility model is further illustrated with reference to the accompanying drawings and examples.
The utility model provides a kind of liquid level sensor performance detection apparatus, including signal pickup assembly, computer and one
Cover test program.
As shown in figure 3, described signal pickup assembly includes environment temperature sensor 2, connectivity port 3, device 4, pass through
Connection cables 5 are connected with host computer 6, and display and keyboard 7 are used for man-machine interaction.The wiring of tested sensor 1 is connected to
Connect on port 2.
External cabling circuit theory diagrams are as shown in figure 4, connectivity port 3 has the individual terminal in [1]-[8], and [4] are dc source
Ground COM, is also the simulation ground AGND of data acquisition, and [1] is resistance test input, [2] and [3] be respectively low potential alarm and
High potential alarm input, [5] are dc source+5V ends, and [6] are voltage input end, and [7] are current input terminal, and [8] are direct current
Power supply+24V ends.Product is connected to the respective end of signal pickup assembly port 3 according to type difference according to 8~12 wiring diagrams respectively
On son.
Can test product type include 6 kinds, be resistor-type, NCT (negative temperature coefficient) type, resistance+alarm, voltage respectively
Type, current mode and alarm.The resistance test wiring of resistor-type, NCT types and the class product of resistance+alarm three as shown in Fig. 48,
The after-applied 5V dc sources of 510 Europe precision resistances are concatenated on tested product, point obtained according to the test on tested product
Pressure calculates resistance.Ann test wiring diagram is as shown in Fig. 49, and full level alarm signal and low alarm signal are switching signal,
Voltage on collection terminal 2,3 judges whether alarm signal normally exports.NCT types product will according to the room temperature data that collects and
NCT parameter lists obtain standard electric resistance and judge whether the resistance value of product is qualified again, 12 institutes in the collection such as Fig. 4 of room temperature data
Show.Voltage-type product need to provide working power+5V or+24V, as shown in Fig. 4 10, can directly gather output of products magnitude of voltage with
Standard value is compared, and it is qualified to determine whether.Current mode product wiring is as shown in Fig. 4 11, and parallel precise is sampled in the output signal
Current signal is converted to voltage signal and is acquired by resistance.
Fig. 5 is typical signal waveforms, and no matter resistance, voltage or current signal are converted to voltage signal acquisition,
Principle is identical.Judgement include waveform judge and signal value judge two aspects because be it is manually operated simulate float with liquid
The motion of face change, so each wave band length may be different, the waveform of test collection also can be variant every time.Therefore ripple is used
Shape rising edge and trailing edge number (if float movement is in opposite direction) carry out waveform judgement, and rising edge or trailing edge number are with setting
Determine the identical then judgement waveform of signal segment number qualified.In each wave band the average value of all sampled values as the wave band signal
Value is compared with setting signal value, and difference judges qualified within the 5% of setting signal value.
The utility model can also have other embodiment, be carried out under without departing substantially from the utility model spirit and its real situation
Change and deformation should all belong to the utility model scope of the claims.
Claims (1)
1. a kind of liquid level sensor device for detecting performance, it is characterised in that：The crust of the device is provided with temperature sensor and eight
Provided with first resistor Acquisition Circuit, voltage collection circuit, current collection circuit, second resistance collection electricity in connection terminal, device
Road and alarm signal Acquisition Circuit and temperature collection circuit；Eight connection terminals are respectively resistance, voltage, electric current, height
Current potential is alarmed and low potential alarm signal connection terminal, and dc source+5V ,+24V terminals and dc source ground COM terminals；
Resistance, voltage, current connection terminal are connected with electrical resistance collection circuit, voltage collection circuit, current collection circuit successively；High potential
Alarm and low potential alarm signal connection terminal are connected with alarm signal Acquisition Circuit, and temperature sensor connects with temperature collection circuit
Connect；First resistor Acquisition Circuit, voltage collection circuit, current collection circuit, second resistance Acquisition Circuit, alarm signal collection electricity
Road, the signal output termination standard data acquisition board of temperature collection circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621313879.6U CN206420541U (en) | 2016-12-02 | 2016-12-02 | A kind of liquid level sensor device for detecting performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621313879.6U CN206420541U (en) | 2016-12-02 | 2016-12-02 | A kind of liquid level sensor device for detecting performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206420541U true CN206420541U (en) | 2017-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621313879.6U Active CN206420541U (en) | 2016-12-02 | 2016-12-02 | A kind of liquid level sensor device for detecting performance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768200A (en) * | 2016-12-02 | 2017-05-31 | 杭州电子科技大学 | A kind of liquid level sensor device for detecting performance and detection method |
| CN109838928A (en) * | 2017-09-08 | 2019-06-04 | 甘肃光热发电有限公司 | The salt method of note for the first time of high-temperature molten salt heat collecting field and hot salt cellar |
-
2016
- 2016-12-02 CN CN201621313879.6U patent/CN206420541U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106768200A (en) * | 2016-12-02 | 2017-05-31 | 杭州电子科技大学 | A kind of liquid level sensor device for detecting performance and detection method |
| CN109838928A (en) * | 2017-09-08 | 2019-06-04 | 甘肃光热发电有限公司 | The salt method of note for the first time of high-temperature molten salt heat collecting field and hot salt cellar |
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