CN209512995U - A kind of fuel liquid level sensor test device - Google Patents
A kind of fuel liquid level sensor test device Download PDFInfo
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- CN209512995U CN209512995U CN201821203563.0U CN201821203563U CN209512995U CN 209512995 U CN209512995 U CN 209512995U CN 201821203563 U CN201821203563 U CN 201821203563U CN 209512995 U CN209512995 U CN 209512995U
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Abstract
The utility model discloses a kind of fuel liquid level sensor test devices, it is related to liquid level sensor the field of test technology, fuel liquid level sensor test device includes: mechanical drive department, pneumatic department and control unit, and mechanical drive department includes driving device, turntable, guiding bar and sensor tooling；Pneumatic department includes gas source component, the component that refuels, component of draining the oil, oil storage tank and test fuel tank, tests on fuel tank and is additionally provided with heating device；Control unit is equipped with operation display panel and temperature control device；Fuel liquid level sensor test device further includes power supply unit, and power supply unit is used to provide power supply for driving device, pneumatic department, control unit and sensor；State change of the utility model analog sensor in automotive oil tank, pass through the state of temperature of heating device simulated automotive fuel tank, the control to test fuel tank intermediate fuel oil liquid level is realized by the cooperation of gas source component, refuel component and component of draining the oil, so that the problem of the utility model can be used in the sensor states tested under a variety of varying environments.
Description
Technical field
The utility model relates to liquid level sensor the field of test technology, especially a kind of fuel liquid level sensor test dress
It sets.
Background technique
As the development automobile of society is more more and more universal in people's lives, the performance of the following automobile is also more next
It is more paid close attention to by people, easily causes instrument to show phenomena such as inaccurate currently, fuel liquid level sensor goes wrong, therefore to biography
The testing requirements of the various performance parameters of sensor are higher and higher, and the accuracy of test data is also higher and higher.
A kind of fuel level sensor and oil-level measurement for vehicle as disclosed in Chinese invention patent CN107449489A
Device, fuel level sensor is for measuring the fuel level for entering fuel level sensor to survey to the fuel level in fuel tank
It measures and its corresponding electric signal is exported according to the fuel level of measurement；Wherein, vehicle has display, and fuel level sensor is from combustion
The bottom of fuel tank extends to the opening of the fuel tank along the direction perpendicular to fuel tank bottom, and by sensor harness with
Display is connected；And fuel level sensor along the height extended perpendicular to fuel tank bottom direction be greater than fuel tank in the direction
On vertical height.Oil level measuring device includes fuel level sensor and matches connection with fuel level sensor by sensor harness
Display；The measuring device of the patent of invention cannot be used for the sensor states tested under a variety of varying environments.
For another example a kind of automotive oil tank oil level method for sensing disclosed in Chinese invention patent CN101709988B, using two
Parallel plate capacitance is respectively as measurement capacitor and refers to compensating electric capacity, and measurement capacitor height is close or equal to fuel tank height, erects
It is directly mounted in fuel tank, is horizontally arranged at tank bottoms with reference to compensating electric capacity, is immersed in oil liquid.Two capacitors are opening
Formula, when level height changes in fuel tank, the Height of oil into measurement capacitor changes therewith, and capacitance is corresponding
It changes, will not change with liquid level with reference to compensating electric capacity capacitance and change.By reference compensating electric capacity to measurement capacitor
It compensates, obtains accurate measurement capacitance variations value and passed through by measuring the linear relationship of capacitance variations value and Height of oil
Processing of circuit can be obtained the exact value of oil tank liquid level height, realize the measurement of oil level；The automotive oil tank oil level of the invention senses
Method cannot achieve automatic detection, and need it is artificial carry out DATA REASONING, there are large error, and detection project list
One.
Utility model content
One, technical problems to be solved
The utility model provides a kind of fuel liquid level sensor test dress for drawbacks described above present in the prior art
It sets, the test parameter for solving existing fuel liquid level sensor test device is single, and test device is complicated, while cannot be used for testing
The problem of sensor states under a variety of varying environments, while solving the problems, such as multiple sensors contrast test.
Two, technical solution
In order to solve the above technical problems, the utility model provides a kind of fuel liquid level sensor test device, fuel liquid level
Sensor detector includes: mechanical drive department, pneumatic department and control unit, and mechanical drive department includes driving device, turntable, guidance
Bar and sensor tooling, for driving turntable to rotate, guiding bar is arranged on turntable driving device, is driven by the rotation of turntable
Guiding bar moves up and down, and sensor tooling is arranged in guiding bar bottom；
Pneumatic department includes gas source component, the component that refuels, component of draining the oil, oil storage tank and test fuel tank, and oiling component includes the
One solenoid valve and positive pressure pressure regulator valve, air pass sequentially through gas source component, the first solenoid valve and positive pressure pressure regulator valve and enter oil storage tank, make
It obtains in the fuel oil indentation test fuel tank in oil storage tank and realizes oiling movement；Component of draining the oil includes second solenoid valve, vacuum generator
With negative pressure pressure regulator valve, air passes sequentially through gas source component, second solenoid valve and vacuum generator and generates negative pressure to extract oil storage
Air in tank, the fuel oil tested in fuel tank are inhaled into oil storage tank when oil storage tank is under negative pressure state, negative pressure pressure regulator valve
For adjusting the vacuum degree of vacuum generator；
Heating device is additionally provided on test fuel tank, heating device is used to heat test fuel tank；
Control unit is equipped with operation display panel and temperature control device, and operation display panel is for showing the real-time of test device
State, temperature control device are used to control temperature of the heating device to adjust test fuel tank；
Fuel liquid level sensor test device further includes power supply unit, and power supply unit is used to be driving device, pneumatic department, control unit
Power supply is provided with sensor.
Wherein, driving device includes servo motor and reduction gearbox, and the power of servo motor is transmitted to turntable by reduction gearbox
Above to drive turntable to rotate.
Wherein, heating device is thermocouple.
Wherein, sensor is equipped with concatenated potentiometer, and potentiometer is for adjusting sensor electrical current.
Wherein, test fuel tank is equipped with watch window, and watch window uses transparent material material.
Wherein, every group of mechanical drive department and pneumatic department are as a sensor test station, fuel liquid level sensor test
Device includes at least two groups of sensor test stations, can carry out sensor contrast test by control unit.
Fuel liquid level sensor test method includes the following steps:
Portion is powered on first, manual mode is selected by control unit, and whether have fuel oil in exact p-value fuel tank；
When, there are when fuel oil, starting Oil drain operation, air passes sequentially through gas source component, the second electromagnetism at this time in test fuel tank
Valve and vacuum generator generate negative pressure to extract the air in oil storage tank, and the fuel oil tested in fuel tank is in negative pressure in oil storage tank
It is inhaled into oil storage tank when under state, completes Oil drain operation；
Then test fuel tank is opened, sensor is mounted in sensor tooling, and complete connection, test oil is closed
Case；
Start refueling operation, air passes sequentially through gas source component, the first solenoid valve and positive pressure pressure regulator valve and enters oil storage at this time
Tank, so that the fuel oil indentation in oil storage tank is tested in fuel tank and realizes oiling movement；
Then sensor electrical current is adjusted by potentiometer, and the temperature of test fuel tank is set by control unit, completed
Parameter setting；
Automatic mode is subsequently selected by control unit, and selects to start, starts the test of fuel liquid level sensor.
Wherein, control unit is also used to be arranged the parameter of the temperature upper limit of test fuel tank, lowest temperature and limiting temperature, and
The parameter of the single power-off time of the single conduction time and sensor of sensor.
Wherein, fuel liquid level sensor test method further includes contrast test mode, under contrast test mode, while
Multiple sensor test stations test different sensors, and carry out test parameter comparison by operation display panel.
Three, beneficial effect
Compared with prior art, a kind of fuel liquid level sensor test device provided by the utility model is driven by setting
Dynamic device, turntable, guiding bar and sensor tooling are used to state change of the analog sensor in automotive oil tank, are filled by heating
The state of temperature for setting simulated automotive fuel tank is realized by the cooperation of gas source component, refuel component and component of draining the oil to test fuel tank
The control of intermediate fuel oil liquid level so that the fuel liquid level sensor test device of the utility model can be used in testing it is a variety of not
The problem of with sensor states under environment；
Further pass through the setting of multisensor test station, so that the utility model is able to carry out more accurate comparison and surveys
Examination.
Detailed description of the invention
Fig. 1 is a kind of mechanical drive department structure chart 1 of fuel liquid level sensor test device of the utility model；
Fig. 2 is a kind of mechanical drive department structure chart 2 of fuel liquid level sensor test device of the utility model；
Fig. 3 is a kind of pneumatic department flow chart 1 of fuel liquid level sensor test device of the utility model；
Fig. 4 is a kind of pneumatic department flow chart 2 of fuel liquid level sensor test device of the utility model；
In figure: 1 is driving device；2 be turntable；3 be guiding bar；4 be sensor tooling；7 be test fuel tank.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.Below
Embodiment cannot be used to limit the scope of the utility model for illustrating the utility model.
Embodiment 1:
A kind of fuel liquid level sensor test device of the utility model embodiment, as shown in Figure 1, Figure 2, Figure 3 and Figure 4,
Fuel liquid level sensor test device includes: mechanical drive department, pneumatic department and control unit, mechanical drive department include driving device 1,
Turntable 2, guiding bar 3 and sensor tooling 4, for driving turntable 2 to rotate, guiding bar 3 is arranged on turntable 2 driving device 1, leads to
The rotation for crossing turntable 2 drives guiding bar 3 to move up and down, and sensor tooling 4 is arranged in 3 bottom of guiding bar；
As shown in Figure 3 and Figure 4, pneumatic department includes gas source component, the component that refuels, component of draining the oil, oil storage tank and test fuel tank
7, oiling component includes the first solenoid valve and positive pressure pressure regulator valve, and air passes sequentially through gas source component, the first solenoid valve and positive pressure tune
Pressure valve enters oil storage tank, so that realizing oiling movement in the fuel oil indentation test fuel tank 7 in oil storage tank；Component of draining the oil includes second
Solenoid valve, vacuum generator and negative pressure pressure regulator valve, air pass sequentially through gas source component, second solenoid valve and vacuum generator and generate
For negative pressure to extract the air in oil storage tank, the fuel oil tested in fuel tank 7 is inhaled into storage when oil storage tank is under negative pressure state
In oil tank, negative pressure pressure regulator valve is used to adjust the vacuum degree of vacuum generator, and specifically, guiding bar 3 is inserted into test fuel tank 7
In, turntable 2 is mounted on the bracket of 7 top of test fuel tank, drives turntable 2 to rotate by driving device 1, specific driving device
1 includes servo motor and reduction gearbox, and the power of servo motor is transmitted on turntable 2 that turntable 2 is driven to rotate by reduction gearbox；
By above-mentioned machine driving, so that the sensor tooling 4 in test fuel tank 7 moves up and down, i.e., so that being mounted on sensor tooling 4
On sensor move up and down, simulate the states of different liquid levels in test fuel tank 7 for sensor；
Heating device is additionally provided on test fuel tank 7, heating device is used to heat test fuel tank 7, in specific implementation
Heating device is using thermocouple as heating device, and in actual application, the temperature in automotive oil tank is can be with season
Change with factors such as driving status, at this point, passing through thermoelectricity in the fuel liquid level sensor test device of the utility model
Couple test fuel tank 7 is heated, and simulation tests sensor under different temperatures environment；
It is equipped with operation display panel and temperature control device on control unit, specifically further includes power switch and signal device,
Signal device corresponds to each sensor test station specifically can be used when sensor test station is in different conditions
Signal lamp is as signal device；Operation display panel is used to show the real-time status of test device, the temperature including testing fuel tank 7
The single conduction time of the upper limit, the parameter of lowest temperature and limiting temperature and sensor and the single power-off time of sensor
Parameter, further comprise the electric current, resistance parameter and corresponding level parameter of tested sensor, in actual application,
Using the design of sensor series potentiometer, sensor electrical current is adjusted by potentiometer, sensor electrical current can pass through
Potentiometer adjusts 10mA-100mA；Temperature control device is used to control temperature of the heating device to adjust test fuel tank 7；
Fuel liquid level sensor test device further includes power supply unit, and power supply unit is used to be driving device 1, pneumatic department, control
Portion and sensor provide power supply, and power switch is used to control the state of power supply unit.
The fuel liquid level sensor test method of the utility model includes the following steps:
Portion is powered on first, manual mode is selected by control unit, and whether have fuel oil in exact p-value fuel tank 7；
When, there are when fuel oil, starting Oil drain operation in test fuel tank 7, air passes sequentially through gas source component, the second electricity at this time
Magnet valve and vacuum generator generate negative pressure to extract the air in oil storage tank, and the fuel oil tested in fuel tank 7 is in oil storage tank
It is inhaled into oil storage tank when under negative pressure state, completes Oil drain operation, the high speed that vacuum generator utilizes gas source component to provide at this time
Compressed air is sprayed, jet stream is formed in nozzle exit, generates volume and inhale flowing, the sky around nozzle exit is made under Involving velocity
Gas is constantly sucked away, so that the pressure in adsorbent chamber is down to atmospheric pressure hereinafter, certain vacuum degree is formed, to extract oil storage tank
Interior air passes through the vacuum degree of negative pressure pressure regulation valve regulation vacuum generator at this time, and then adjusts the air extracted in oil storage tank
Speed, Oil drain operation is conveniently replaceable sensor for meeting test request or the when progress for cleaning test device,
Angle valve is equipped between oil storage tank and test fuel tank 7；
When testing does not have fuel oil in fuel tank 7, continue next movement；
Then test fuel tank 7 is opened, sensor is mounted in sensor tooling 4, and complete connection, test is closed
Fuel tank 7, is locked by locking nut, guarantees test process safety；
Next refueling operation is started according to selection dry grinding test or wet-milling test, be not required to if carrying out dry grinding test into
Row refueling operation, if refueling operation need to be carried out by carrying out wet-milling test；
Refueling operation is as follows, and air passes sequentially through gas source component, the first solenoid valve and positive pressure pressure regulator valve and enters oil storage at this time
Tank, so that the fuel oil indentation in oil storage tank is tested in fuel tank 7 and realizes oiling movement；
Then sensor electrical current is adjusted by potentiometer, and the temperature of test fuel tank 7 is set by control unit, completed
Parameter setting；
Automatic mode is subsequently selected by control unit, and selects to start, starts the test of fuel liquid level sensor.
Control unit is also used to be arranged the parameter of the temperature upper limit of test fuel tank 7, lowest temperature and limiting temperature, and sensing
The parameter of the single power-off time of the single conduction time and sensor of device.
A kind of specific test setting of the utility model is as follows, endurance test:
Circulation A: sensor needs the 4ms that is powered in testing, and break 240ms, continues 60 hour circulations and is powered, then continues
12 hour no powers, 72 hours are a circulation；
In circulation A, it is completely one cycle that test fuel tank 7, which expires -- sky --, i.e. the full oil and empty oil condition of test fuel tank 7,
Cycle operation frequency is adjustable 0.5-2.5Hz；
In circulation A, 2 minutes in air in liquid within sensor 10 minutes.
Then the different temperature condition of settable test fuel tank 7.
Fuel liquid level sensor test device is additionally provided with the abnormal alarms such as short circuit, open circuit and recordable test number (TN), highest
Up to 10,000,000 times；The test device of the utility model is suitable for -2 DEG C of environment temperature~40 DEG C, is situated between without dust and various corrosion
The place of matter.
Embodiment 2:
For embodiment 1, every group of mechanical drive department and pneumatic department are as a sensor test work in embodiment 2
Position, fuel liquid level sensor test device include at least two groups of sensor test stations, can carry out sensor pair by control unit
Than test, it can be used for the sensor for same model under different temperatures environment, carry out identical test, carry out test comparison
Analysis；The sensor of different model be can also be used for when other environment are identical, carry out identical test, carry out test comparison point
Analysis.
Fuel liquid level sensor test method further includes contrast test mode, under contrast test mode, while multiple
Sensor test station tests different sensors, and carries out test parameter comparison by operation display panel.
Embodiment 3:
Fuel tank 7, which is tested, for embodiment 1, in the fuel liquid level sensor test device of embodiment 3 is equipped with sight
Window is examined, watch window uses transparent material material, carries out most intuitive observation to test mode by watch window, further
Guarantee that the safety of test carries out, and can find the problem at the first time.
Above are merely preferred embodiments of the utility model, it is noted that for the ordinary skill people of the art
Member for, without deviating from the technical principle of the utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model.
Claims (6)
1. a kind of fuel liquid level sensor test device, which is characterized in that the fuel liquid level sensor test device includes: machine
Tool driving section, pneumatic department and control unit, the mechanical drive department include driving device (1), turntable (2), guiding bar (3) and sensing
Device tooling (4), for driving the turntable (2) to rotate, the guiding bar (3) is arranged in the turntable driving device (1)
(2) on, the guiding bar (3) is driven to move up and down by the rotation of the turntable (2), sensor tooling (4) setting exists
Guiding bar (3) bottom；
The pneumatic department includes gas source component, the component that refuels, component of draining the oil, oil storage tank and test fuel tank (7), the oiling component
Including the first solenoid valve and positive pressure pressure regulator valve, air pass sequentially through the gas source component, the first solenoid valve and positive pressure pressure regulator valve into
Enter oil storage tank, so that the fuel oil in the oil storage tank, which is pressed into the test fuel tank (7), realizes oiling movement；The component of draining the oil
Including second solenoid valve, vacuum generator and negative pressure pressure regulator valve, air passes sequentially through the gas source component, second solenoid valve and true
Empty generator generates negative pressure to extract the air in oil storage tank, and the fuel oil in test fuel tank (7) is at the oil storage tank
It is inhaled into when under negative pressure state in the oil storage tank, the negative pressure pressure regulator valve is used to adjust the vacuum degree of vacuum generator；
Heating device is additionally provided on the test fuel tank (7), the heating device is used to heat test fuel tank (7)；
The control unit is equipped with operation display panel and temperature control device, and the operation display panel is for showing test device
Real-time status, the temperature control device are used to control the heating device to adjust the temperature of test fuel tank (7)；
The fuel liquid level sensor test device further includes power supply unit, and the power supply unit is used for for driving device (1), pneumatically
Portion, control unit and sensor provide power supply.
2. a kind of fuel liquid level sensor test device as described in claim 1, which is characterized in that the driving device (1)
Including servo motor and reduction gearbox, the power of the servo motor is transmitted on turntable (2) by reduction gearbox to described in drive
Turntable (2) rotation.
3. a kind of fuel liquid level sensor test device as described in claim 1, which is characterized in that the heating device is heat
Galvanic couple.
4. a kind of fuel liquid level sensor test device as described in claim 1, which is characterized in that the sensor is equipped with string
The potentiometer of connection, the potentiometer is for adjusting the sensor electrical current.
5. a kind of fuel liquid level sensor test device as described in claim 1, which is characterized in that the test fuel tank (7)
It is equipped with watch window, the watch window uses transparent material material.
6. a kind of fuel liquid level sensor test device as described in claim 1, which is characterized in that machine driving described in every group
As a sensor test station, the fuel liquid level sensor test device includes at least two groups of sensors for portion and pneumatic department
Test station can carry out sensor contrast test by the control unit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821203563.0U CN209512995U (en) | 2018-07-27 | 2018-07-27 | A kind of fuel liquid level sensor test device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821203563.0U CN209512995U (en) | 2018-07-27 | 2018-07-27 | A kind of fuel liquid level sensor test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108759992A (en) * | 2018-07-27 | 2018-11-06 | 宁波洛卡特汽车零部件有限公司 | A kind of fuel liquid level sensor test device and method |
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2018
- 2018-07-27 CN CN201821203563.0U patent/CN209512995U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108759992A (en) * | 2018-07-27 | 2018-11-06 | 宁波洛卡特汽车零部件有限公司 | A kind of fuel liquid level sensor test device and method |
| CN108759992B (en) * | 2018-07-27 | 2024-05-03 | 宁波洛卡特汽车零部件有限公司 | Fuel oil liquid level sensor testing device and method |
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