CN2235620Y - Safety and precision investigating instrument for engine oil - Google Patents
Safety and precision investigating instrument for engine oil Download PDFInfo
- Publication number
- CN2235620Y CN2235620Y CN 95213435 CN95213435U CN2235620Y CN 2235620 Y CN2235620 Y CN 2235620Y CN 95213435 CN95213435 CN 95213435 CN 95213435 U CN95213435 U CN 95213435U CN 2235620 Y CN2235620 Y CN 2235620Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- sensor
- engine oil
- machine oil
- gauge outfit
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a safety and precision testing instrument for engine oil, comprising a casing, a meter head, a sensor, a testing circuit and a power supply. The utility model is characterized in that a microampere-level current meter is arranged on the casing; a sensor comprising a flat plate type surface capacitor is arranged at the middle part of the casing; a testing circuit which comprises a bridge circuit, an oscillator, a rectifying circuit and a testing switch is arranged in the casing. The utility model adopts electronic elements to detect the engine oil with reliable detection and high precision has cabinet structure, convenient carrying and convenient operation, and the safety and precision testing instrument for engine oil is suitable for detecting the engine oil of an automobile and the lubricating engine oil of other gasoline engines.
Description
The utility model provides a kind of method test analysis material of electricity consumption, is specially adapted to analyze automobile machine oil.
The machine oil safety detection mainly is at the automobile engine oil in gear case, and the term of life of other petrolic lubricating oils, quality state, in time changes to remind driver and user of service, prevents the parts excessive wear.Present detection method is to adopt the artificial visually examine, determines rule of thumb whether machine oil can continue to use, and detects poor effect like this, causes error easily, can not change used oil in time and causes the unnecessary wearing and tearing of automobile.
The purpose of this utility model is a kind of novel machine oil safety precision aid of design, and it adopts electronic component that machine oil is detected, detect reliably, and the precision height, and also structure is small and exquisite, is easy to carry, and easy to use.
Machine oil safety precision aid of the present utility model is made up of housing, gauge outfit, sensor, test circuit power supply, it is characterized in that: microampere order electric current gauge outfit is set on box-type shell top, green district and red color area are set in the gauge outfit; At the housing middle part sensor that flat surface capacitor constitutes is set; Test circuit is arranged in the housing, is made up of bridge diagram, oscillator, rectification circuit, Test Switchboard, and bridge diagram is a condenser type resistance bridge, and sensor is as one of them brachium pontis, C
1, C
2, C
3Be balancing capacitance, C
4, C
5Constitute the electric bridge zeroing circuit; Oscillator is by gate circuit G
1, G
2And resistance R
1, crystal oscillator T
1Form, be connected with bridge diagram; Rectification circuit is by D
1And C
6Form, be connected with an end of bridge diagram; Test Switchboard one end connects rectification circuit, and the other end then connects gauge outfit, power supply.
Machine oil safety precision aid circuit working process of the present utility model is: the AC signal of a quite stable of oscillator output of forming by crystal oscillator and gate circuit, supply with stable AC power of bridge diagram; Bridge diagram by sensor and balancing capacitance, and the effect of zeroing electric capacity, makes bridge diagram under charging machine oil condition not under the excitation of above-mentioned AC power, export a stable zero-signal, with assurance instrument operate as normal; When sensor filling machine oil, the bridge diagram out of trim so just produces an AC signal output, and this output, again with sensor in the quality of machine oil certain proportionate relationship is arranged, therefore, the output of bridge diagram is with regard to the corresponding quality of representing machine oil.Its quality is poor more, and AC signal output is then big more.In order to detect this signal, the rectification circuit by commutation diode and capacitor are formed becomes direct current signal with this signal, through selector switch, delivers to gauge outfit and shows output.
The use-pattern of machine oil safety precision aid of the present utility model is that the instrument horizontal positioned is wiped examination totally with the machine oil nest of planar surface Sensor section; Press Test Switchboard backward, detect this system battery voltage condition, this moment, gauge outfit should be rocked to full scale (3/4 places), and cell voltage is normal in the expression instrument; Push switch forward, because does not still have test machine oil this moment in the sensor machine oil nest, gauge outfit is designated as zero, as non-vanishing, available screwdriver adjusting; Still unworn fresh machine oil splashes in the sensor machine oil nest then, presses Test Switchboard forward, and position this moment is remembered in the meter pointer swing; It is clean sensor machine oil nest to be wiped examination again, go in the machine oil nest the used oil that uses or changed is one after another drop of, meter pointer will have very big swing this moment, if its oscillating quantity is no more than the green area of upper strata indication, represents that this machine oil quality descends, but can also use, if pointer enters red area fully, perhaps be rocked to the rightmost side, then represent this machine oil complete failure, should change immediately.
Machine oil safety precision aid of the present utility model, because adopting extremely accurate flat surface capacitor is sensor, therefore to the dielectric product qualitative response of machine oil (also can be used for media such as the moving or powder of other semi-fluids) sensitivity extremely, in oscillatory circuit,, therefore, make the circuit output services very stable by adopting crystal oscillator, can guarantee the reliable operation of instrument, test data is with the indication of gauge outfit form, and is directly perceived, accurate, easy to use.
The utility model has the advantages that circuit is simple and direct, the sensor sensitivity, indication is reliable, and is easy to use.
Machine oil safety precision aid of the present utility model is applicable to and detects automobile engine oil and other petrolic lubricating oils.
Below in conjunction with drawings and Examples machine oil safety precision aid is described further.
Fig. 1 is a machine oil safety precision aid structural representation
Fig. 2 is a machine oil safety precision aid electricity theory diagram
Fig. 3 is a machine oil safety precision aid electricity principle sketch
As can be seen, a kind of machine oil safety precision aid is made up of housing, gauge outfit, sensor, test circuit, power supply, it is characterized in that: on box-type shell 4 tops microampere order electric current gauge outfit 1 is set, green district and red color area are set in the gauge outfit; At the housing middle part sensor 2 that flat surface capacitor constitutes is set; Test circuit is arranged in the housing, is made up of bridge diagram 6, oscillator 7, rectification circuit 8, Test Switchboard 5, and bridge diagram is a condenser type resistance bridge, and sensor is as one of them brachium pontis, C
1, C
2, C
3Be balancing capacitance, C
4, C
5Constitute the electric bridge zeroing circuit; Oscillator is by gate circuit G
1, G
2And resistance R
1, crystal oscillator T
1Form, be connected with bridge diagram; Rectification circuit is by rectification diode D
1And capacitor C
6Form, be connected with an end of bridge diagram; Test Switchboard one end connects rectification circuit, and the other end then connects gauge outfit, power supply.
Among the figure: 3 are the zeroing knob.
Claims (2)
1, a kind of machine oil safety precision aid is made up of housing, gauge outfit, sensor, test circuit, power supply, it is characterized in that: microampere order electric current gauge outfit is set on box-type shell top, green district and red color area are set in the gauge outfit; At the housing middle part sensor that flat surface capacitor constitutes is set; Test circuit is arranged in the housing, is made up of bridge diagram, oscillator, rectification circuit, Test Switchboard.
2, machine oil safety precision aid as claimed in claim 1, it is characterized in that: described bridge diagram is a condenser type resistance bridge, and sensor is as one of them brachium pontis, C
1, C
2, C
3Be balancing capacitance, C
4, C
5Constitute the electric bridge zeroing circuit; Oscillator is by gate circuit G
1, G
2And resistance R
1, crystal oscillator T
1Form, be connected with bridge diagram; Rectification circuit is by rectification diode D
1And capacitor C
6Form, be connected with an end of bridge diagram: Test Switchboard one end connects rectification circuit, and the other end then connects gauge outfit, power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95213435 CN2235620Y (en) | 1995-06-16 | 1995-06-16 | Safety and precision investigating instrument for engine oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95213435 CN2235620Y (en) | 1995-06-16 | 1995-06-16 | Safety and precision investigating instrument for engine oil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2235620Y true CN2235620Y (en) | 1996-09-18 |
Family
ID=33863334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95213435 Expired - Fee Related CN2235620Y (en) | 1995-06-16 | 1995-06-16 | Safety and precision investigating instrument for engine oil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2235620Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108692837A (en) * | 2017-04-06 | 2018-10-23 | 恩智浦美国有限公司 | Signal interface circuit and pressure sensor systems including signal interface circuit |
-
1995
- 1995-06-16 CN CN 95213435 patent/CN2235620Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108692837A (en) * | 2017-04-06 | 2018-10-23 | 恩智浦美国有限公司 | Signal interface circuit and pressure sensor systems including signal interface circuit |
| CN108692837B (en) * | 2017-04-06 | 2021-10-15 | 恩智浦美国有限公司 | Signal interface circuit and pressure sensor system including the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |