CN205138674U - Convenient readable on -vehicle thermodetector - Google Patents
Convenient readable on -vehicle thermodetector Download PDFInfo
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- CN205138674U CN205138674U CN201520911251.5U CN201520911251U CN205138674U CN 205138674 U CN205138674 U CN 205138674U CN 201520911251 U CN201520911251 U CN 201520911251U CN 205138674 U CN205138674 U CN 205138674U
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Abstract
The utility model discloses a convenient readable on -vehicle thermodetector, including power E, diode D1, switch S1 and chip IC1, chip IC1's pin 1, chip IC2's pin 3, diode D1's positive pole, diode D2's positive pole, diode D3's positive pole, diode D4's positive pole, diode D5's positive pole, diode D6's positive pole, diode D7's positive pole, diode D8's positive pole, diode D9's positive pole, diode D10's positive pole and switch S1 are connected to power E anodal. The utility model discloses convenient readable on -vehicle thermodetector circuit structure is simple, components and parts are few, adopts TCO2 temperature sensor extensively to utilize driver chip and emitting diode easily to read as temperature indicator module, convenience as detecting element, its precision height, stable good, measuring range to consequently can adjust measuring range and display packing, have that the function is various, convenient to use and an advantage with low costs.
Description
Technical field
The utility model relates to a kind of temperature detector, specifically a kind of vehicle-mounted temperature detector facilitating readability.
Background technology
Along with the arrival of new technology revolution, the whole world starts to enter the information age.In the process utilizing information, what first will solve is exactly how to obtain information accurately and reliably, and sensor is the main path and the means that obtain information in nature and production field; Just because of these characteristics of sensor, make the utilization of sensor extensive gradually.Especially in on-vehicle information technical field, fuel tank temperature needs emphasis to monitor, and that commonly uses at present is completed by temperature measuring equipment mostly to the collection of temperature.But, existing temperature measuring equipment, the metering circuit structure of its inside is comparatively complicated, although can realize the measurement of temperature, power consumption is higher, thus causes the waste of the energy, add the input of cost, and existing fuel tank temperature detector mostly is the display of LCD liquid crystal digital, brightness reduces, and is not easy to attract much attention.
Utility model content
The purpose of this utility model is to provide a kind of vehicle-mounted temperature detector facilitating readability, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of vehicle-mounted temperature detector facilitating readability, comprise power supply E, diode D1, switch S 1 and chip IC 1, the positive pole of described power supply E connects the pin 1 of chip IC 1, the pin 3 of chip IC 2, the anode of diode D1, the anode of diode D2, the anode of diode D3, the anode of diode D4, the anode of diode D5, the anode of diode D6, the anode of diode D7, the anode of diode D8, the anode of diode D9, the anode of diode D10 and switch S 1, the pin 5 of chip IC 2 connects the pin 2 of chip IC 1, the pin 6 of chip IC 2 connects a stiff end of potentiometer RP1 and the pin 7 of chip IC 2, the sliding end of another stiff end link potentiometer RP1 of potentiometer RP1 and the sliding end of potentiometer RP2, a stiff end of potentiometer RP1 connects the pin 4 of chip IC 2, another stiff end ground connection of potentiometer RP2, the negative electrode of diode D1 connects the pin 1 of chip IC 2, the negative electrode of diode D2 connects the pin 18 of chip IC 2, the negative electrode of diode D3 connects the pin 17 of chip IC 2, the negative electrode of diode D4 connects the pin 16 of chip IC 2, the negative electrode of diode D5 connects the pin 15 of chip IC 2, the negative electrode of diode D6 connects the pin 14 of chip IC 2, the negative electrode of diode D7 connects the pin 13 of chip IC 2, the negative electrode of diode D8 connects the pin 12 of chip IC 2, the negative electrode of diode D9 connects the pin 11 of chip IC 2, the negative electrode of diode D10 connects the pin 10 of chip IC 2, the model of chip IC 1 is TC02, the model of chip IC 2 is LM3914.
As preferred version of the present utility model: described diode D1 ~ D10 is light emitting diode.
Compared with prior art, the beneficial effects of the utility model are: the utility model facilitates that the vehicle-mounted temperature detection circuit structure of readability is simple, components and parts are few, adopt TC02 temperature sensor as detecting element, its precision is high, good stability, and measurement range is wide, utilizes driver chip and light emitting diode as temperature indicating module, facilitate readability, very eye-catching, and measurement range and display packing can be regulated, therefore there is diverse in function, the advantage that easy to use and cost is low.
Accompanying drawing explanation
Fig. 1 is for convenience of the circuit diagram of the vehicle-mounted temperature detector of readability.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, a kind of vehicle-mounted temperature detector facilitating readability, comprise power supply E, diode D1, switch S 1 and chip IC 1, the positive pole of described power supply E connects the pin 1 of chip IC 1, the pin 3 of chip IC 2, the anode of diode D1, the anode of diode D2, the anode of diode D3, the anode of diode D4, the anode of diode D5, the anode of diode D6, the anode of diode D7, the anode of diode D8, the anode of diode D9, the anode of diode D10 and switch S 1, the pin 5 of chip IC 2 connects the pin 2 of chip IC 1, the pin 6 of chip IC 2 connects a stiff end of potentiometer RP1 and the pin 7 of chip IC 2, the sliding end of another stiff end link potentiometer RP1 of potentiometer RP1 and the sliding end of potentiometer RP2, a stiff end of potentiometer RP1 connects the pin 4 of chip IC 2, another stiff end ground connection of potentiometer RP2, the negative electrode of diode D1 connects the pin 1 of chip IC 2, the negative electrode of diode D2 connects the pin 18 of chip IC 2, the negative electrode of diode D3 connects the pin 17 of chip IC 2, the negative electrode of diode D4 connects the pin 16 of chip IC 2, the negative electrode of diode D5 connects the pin 15 of chip IC 2, the negative electrode of diode D6 connects the pin 14 of chip IC 2, the negative electrode of diode D7 connects the pin 13 of chip IC 2, the negative electrode of diode D8 connects the pin 12 of chip IC 2, the negative electrode of diode D9 connects the pin 11 of chip IC 2, the negative electrode of diode D10 connects the pin 10 of chip IC 2, the model of chip IC 1 is TC02, the model of chip IC 2 is LM3914.
Diode D1 ~ D10 is light emitting diode.
Principle of work of the present utility model is: electric current when diode D1 ~ D10 in circuit is luminous is arranged by 4,6 pin outer meeting resistances, suppose that 4,6 pin outer meeting resistances are 1.2k Ω, in parallel with chip IC 2 internal voltage divider 10k Ω all-in resistance, making the equivalent resistance between 4,6 pin be the electric current that 10.7k about Ω, 1.25V reference voltage is supplied to bleeder circuit is 1.25V/1.07k Ω ≈ 1.2mA.And diode D1 ~ D10 glow current is 10 times of this electric current, i.e. about 12mA.Reference voltage source between 7,8 pin of chip IC 2 is also suspension joint, and 6 pin are connected with 7 pin and use inner 1.25V reference voltage, and because chip IC 2 is linear dividing potential drops, neighboring voltage comparer in-phase input end increases 0.125V step by step.Therefore when 5 pin defeated artificial zero time, the equal locking of 10 step voltage comparer, diode D1 ~ D10 is all not luminous; Switch S 1 in circuit is a little/bar display mode switch, Closing Switch S1, then be operated in bar shaped display mode, chip IC 1 is for collecting temperature signal, when inputting the signal voltage of a slow rising by 5 pin in chip IC 2 after its internal conversion, then voltage often increases 0.125V just a LED lighting, and when being increased to 1.25V, 10 diodes are all lighted.If cut-off switch S1, be then operated in a dynamic some display mode, input voltage often increases 0.125V, and just to change a diode luminous separately.Use potentiometer RP1 can change the current potential of resitstance voltage divider low side 4 pin, therefore can change the range ability of displays temperature, adjusting RP2 then can fine tuning Temperature displaying scope, conveniently can read temperature value by the state of light emitting diode.
Claims (2)
1. one kind facilitates the vehicle-mounted temperature detector of readability, comprise power supply E, diode D1, switch S 1 and chip IC 1, it is characterized in that, the positive pole of described power supply E connects the pin 1 of chip IC 1, the pin 3 of chip IC 2, the anode of diode D1, the anode of diode D2, the anode of diode D3, the anode of diode D4, the anode of diode D5, the anode of diode D6, the anode of diode D7, the anode of diode D8, the anode of diode D9, the anode of diode D10 and switch S 1, the pin 5 of chip IC 2 connects the pin 2 of chip IC 1, the pin 6 of chip IC 2 connects a stiff end of potentiometer RP1 and the pin 7 of chip IC 2, the sliding end of another stiff end link potentiometer RP1 of potentiometer RP1 and the sliding end of potentiometer RP2, a stiff end of potentiometer RP1 connects the pin 4 of chip IC 2, another stiff end ground connection of potentiometer RP2, the negative electrode of diode D1 connects the pin 1 of chip IC 2, the negative electrode of diode D2 connects the pin 18 of chip IC 2, the negative electrode of diode D3 connects the pin 17 of chip IC 2, the negative electrode of diode D4 connects the pin 16 of chip IC 2, the negative electrode of diode D5 connects the pin 15 of chip IC 2, the negative electrode of diode D6 connects the pin 14 of chip IC 2, the negative electrode of diode D7 connects the pin 13 of chip IC 2, the negative electrode of diode D8 connects the pin 12 of chip IC 2, the negative electrode of diode D9 connects the pin 11 of chip IC 2, the negative electrode of diode D10 connects the pin 10 of chip IC 2, the model of chip IC 1 is TC02, the model of chip IC 2 is LM3914.
2., according to a kind of vehicle-mounted temperature detector facilitating readability according to claim 1, it is characterized in that, described diode D1 ~ D10 is light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520911251.5U CN205138674U (en) | 2015-11-17 | 2015-11-17 | Convenient readable on -vehicle thermodetector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520911251.5U CN205138674U (en) | 2015-11-17 | 2015-11-17 | Convenient readable on -vehicle thermodetector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205138674U true CN205138674U (en) | 2016-04-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520911251.5U Expired - Fee Related CN205138674U (en) | 2015-11-17 | 2015-11-17 | Convenient readable on -vehicle thermodetector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205138674U (en) |
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2015
- 2015-11-17 CN CN201520911251.5U patent/CN205138674U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160406 Termination date: 20171117 |