CN209625573U - A kind of car electrics base components demonstrator - Google Patents
A kind of car electrics base components demonstrator Download PDFInfo
- Publication number
- CN209625573U CN209625573U CN201822261832.5U CN201822261832U CN209625573U CN 209625573 U CN209625573 U CN 209625573U CN 201822261832 U CN201822261832 U CN 201822261832U CN 209625573 U CN209625573 U CN 209625573U
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- Prior art keywords
- resistance
- blower
- teaching area
- switch
- base components
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Abstract
The utility model belongs to automobile elementary teaching fixture technology field, and in particular to a kind of car electrics base components demonstrator, including series circuit teaching area, water temperature sensor circuit teaching area and blower circuit teaching area；Series circuit teaching area includes 12V switch, indicator light, ammeter, first resistor and the second resistance being connected in series, the second resistance ground connection, and the both ends of the ammeter, first resistor and second resistance are equipped with terminal jacks；Pass through series circuit teaching area, water temperature sensor circuit teaching area and blower circuit teaching area, the principle of series circuit, the principle of the principle of water temperature sensor and blower circuit are illustrated to user with simplest device, user is set to have understood in series circuit interactional principle between device by observing ammeter, the control principle of the resistance of the principle and different stalls that change between temperature and resistance value to blower speed.
Description
Technical field
The utility model belongs to automobile elementary teaching fixture technology field, and in particular to a kind of car electrics base components are shown
Teaching board.
Background technique
Electric elements are the basic constituent element of various control circuit of machine tool and automatic electric drive control system, it is directly
Both rear reliability and economy are affected, therefore, the structure & working mechanism of electric elements is familiar with and its correctly selects,
Just become study and grasp understand novel electric appliance element basis, there are many type of electric elements, classification method also there are many.It presses
The classification of its manner of execution, can be divided into and automatically switch electric appliance and non-automatic switching electric appliance；By its effect and position in control circuit
Classification is set, control electric appliance and distribution (protection) electric appliance can be divided into；Classify by its functionating, can be divided into has contact and non-contact
Electric appliance, etc..
Existing technology has the following problems:
1, the existing principle for imparting knowledge to students the electric appliance base components by automobile for being unable to simple, intuitive is shown student；
2, complicated to the connection of circuit, not only quality of instruction is bad, and equipment is not allowed easily contained, is easily lost.
Utility model content
To solve the problems mentioned above in the background art.The utility model provides a kind of car electrics base components and shows
Teaching board has the characteristics that simple and clear.
To achieve the above object, the utility model provides the following technical solutions: a kind of car electrics base components demonstrator,
Including series circuit teaching area, water temperature sensor circuit teaching area and blower circuit teaching area；Series circuit teaching area
12V switch, indicator light, ammeter, first resistor and second resistance including series connection, the second resistance ground connection, and institute
The both ends for stating ammeter, first resistor and second resistance are equipped with terminal jacks；The water temperature sensor circuit teaching area includes
The ammeter and thermistor being connected on ECU, the other end ground connection of the thermistor；Blower circuit teaching area packet
Include 12V switch, indicator light, ammeter, blower switch, resistance A, resistance B, resistance C and blower motor, the blower switch
One end is serially connected on the ammeter, after the other end of the blower switch is connected in parallel on resistance A, resistance B, resistance C respectively
End, and connect with the blower motor.
Preferably, the thermistor is negative tempperature coefficient thermistor.
Preferably, the thermistor is mounted on the water jacket of engine cylinder body or cylinder cap.
Preferably, the blower switch is rotary switch.
Preferably, there are four contact on the blower switch, the resistance A, resistance B, resistance C are connected in series, and four
Contact is sequentially connected at the both ends of the resistance A, resistance B, resistance C.
Preferably, the resistance A, resistance B, resistance C resistance value be two ohm.
Preferably, the resistance value of the first resistor and second resistance is three ohm.
Compared with prior art, the utility model has the beneficial effects that
1, most simple by series circuit teaching area, water temperature sensor circuit teaching area and blower circuit teaching area, use
Device illustrate the principle of series circuit, the principle of the principle of water temperature sensor and blower circuit to user, keep user logical
Cross observation ammeter and understood in series circuit interactional principle between device, the principle changed between temperature and resistance value with
And the resistance of different stalls is to the control principle of blower speed.
2, simultaneously, whole device structure is simple, and patching operations are convenient, it is not easy to device loss and random wrong be caused to connect
Student can be improved to the understandability of circuit in situation, and especially basic relatively poor student has preferable acceptance.
Detailed description of the invention
Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this
Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the control circuit of blower figure of the prior art；
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment 1
Referring to Fig. 1, the utility model is the following technical schemes are provided: a kind of car electrics base components demonstrator, including
Series circuit teaching area, water temperature sensor circuit teaching area and blower circuit teaching area；Series circuit teaching area includes
12V switch, indicator light, ammeter, first resistor and the second resistance of series connection, the second resistance ground connection, and the electricity
The both ends of flow table, first resistor and second resistance are equipped with terminal jacks.
In the present embodiment: series circuit is one of the basic mode for connecting circuit element, according to the basic of series circuit
Principle, by circuit element (such as resistance, capacitor, inductance, electrical appliance etc.), sequentially join end to end connects one by one, and each electrical appliance is connected
Get up composition circuit series circuit, it is all equal by the electric current of each electrical appliance in series circuit, it is known that voltage rating 12V,
Do are first resistor and second resistance 3 Europe, and the electric current for trying to calculate in circuit is how many
According to Ohm's law it is found that in series circuit:
I is total=I1=I2 (1.1)
R is total=R1+R2 (1.2)
U is total=U1+U2 (1.3)
U=I × R (1.4)
It is 2 amperes that formula (1.1), (1.2), (1.3), which are substituted into band (1.4) electric current calculated in circuit, in simulation drawing
Ammeter electric current it is identical.
Embodiment 2
Referring to Fig. 1, the utility model is the following technical schemes are provided: a kind of car electrics base components demonstrator, including
Series circuit teaching area, water temperature sensor circuit teaching area and blower circuit teaching area；The water temperature sensor circuit teaching
Area includes the ammeter and thermistor being connected on ECU, the other end ground connection of the thermistor.
In the present embodiment: the inside of vehicle water temp sensor is a semiconductor thermistor, and temperature is lower, and resistance is cured
Greatly；Otherwise resistance is smaller, it is mounted on the water jacket of engine cylinder body or cylinder cap, directly contacts with cooling water, start to measure
The temperature of machine cooling water, electronic control unit measure the temperature of engine cooling water according to this variation, and temperature is lower, and resistance is bigger；
Otherwise resistance is smaller, and electronic control unit measures the temperature of engine cooling water according to this variation, sprays and lighted a fire just as fuel oil
When amendment number stop or movement it is possible thereby to understand the state of the present operation of automobile by the temperature of engine water temperature,
Or movement time have how long etc..
Vehicle water temp sensor is mounted on the water jacket of engine cylinder body or cylinder cap, is directly contacted with coolant liquid, for surveying
The coolant temperature of engine is measured, the temperature sensor that coolant temperature gauge uses is a negative tempperature coefficient thermistor
(NTC), resistance value is increased with temperature and is reduced, and has a conducting wire to be connected with electronic control unit ECU, and another is ground strap.
When occurring because vehicle load is excessive, water shortage, the duration of ignition the failures such as do not turn to, fan, when causing water temperature over-high,
Increase engine body temperature, to prevent engine from working, so devising vehicle water temp biography in instrument system
Sensor detects engine coolant temperature using vehicle water temp sensor, driver can intuitively find out, engine cool
Temperature of the liquid in any operating condition, and corresponding processing is made in time, cooling-water temperature transmitter is also equipped in electric-control system,
For distributive value revise signal.
In the present embodiment, with multimeter detection vehicle water temp sensor:
(1) it is looked into car test.Ignition switch is closed, the connector of sensor is removed, with the Rx1 of automobile specified multimeter
Gear tests the resistance value of sensor two-terminal.By taking THW the and E2 terminal of imperial crown 3.0 as an example, temperature be 0 DEG C when, resistance be 4~
7kΩ；When temperature is 20 DEG C, resistance is 2~3k Ω；It is 40 DEG C of times in temperature, resistance is 0.9~1.3k Ω；At 60 DEG C
When be O.4~0.7k Ω, at 80 DEG C, be 0.2~0.4k Ω vehicle water temp sensor resistance value and temperature height at anti-
Than.
(2) single-piece inspection.Vehicle water temp sensor conductor connector is removed, sensor is then removed from engine.It will
Sensor is placed in the water in beaker, the water in Heating Cup.As temperature gradually rises.With multimeter power block measurement sensor
Resistance value, the value measured is compared with standard value, if not meeting, Ying Genghuan vehicle water temp sensor.
In the present embodiment, according to Ohm's law, in same circuit, electric current in conductor with conductor both ends voltage at
Direct ratio, the resistance with conductor are inversely proportional.According to definition it is found that it could be assumed that U=I × R, is concluded that according to experiment
1) in series circuit
I is total=I1=I2 (2.1)
R is total=R1+R2 (2.2)
U is total=U1+U2 (2.3)
U=I × R (2.4)
The conclusion obtained in experiment complies fully with Ohm's law.
2) known nominal voltage 5V, R1 are 1 ohm, and vehicle water temp sensor is thermistor, 1 ohm to 4 of resistance value section
Ohm (simulation).
Analysis: when temperature reaches highest, minimum 1 Europe of resistance, when temperature reaches it is minimum when, resistance is up to 4 Europe.
According to formula (2.1), (2.2), (2.3), (2.4):
When temperature highest, the resistance in circuit is 1 Europe, and the all-in resistance in circuit is 2 ohm.
It is obtained according to (2.4), the electric current in circuit is 2.5A.
When the temperature is at a minimum, the resistance in circuit is 4 Europe, and the all-in resistance in circuit is 5 ohm.
It is obtained according to (2.4), the electric current 1A in circuit.
Therefore experiment conclusion is obtained:
By observing the curent change of ammeter it is found that when electric current becomes smaller, the resistance in circuit is maximum, and water temperature is got over
Low, when electric current becomes larger, the resistance in circuit is minimum, and water temperature is higher.
Embodiment 3
Fig. 1 and 2 is please referred to, the utility model is the following technical schemes are provided: a kind of car electrics base components demonstrator, packet
Include series circuit teaching area, water temperature sensor circuit teaching area and blower circuit teaching area；Blower circuit teaching area
Including 12V switch, indicator light, ammeter, blower switch, resistance A, resistance B, resistance C and blower motor, the air blower is opened
It closes one end to be serially connected on the ammeter, the other end of the blower switch is connected in parallel on resistance A, resistance B, resistance C respectively
Rear end, and connect with the blower motor.
In the present embodiment, it is the electricity by sealing in different resistance values in blower circuit that the revolving speed of air blower, which controls,
Resistance, by switch control, realizes that stepless time adjustment can be realized if resistance is changed to be controlled electronically in 4 revolving speed shelves.
1) low-speed running
When switch is located on heater control panel.When this switch connection, it is mounted in self-contained air-conditioner amplifier
Micro computer connect TR1, start heater relay.This makes electric current flow to heater relay from battery, then flows
To blower motor, then it is flow to blower resistor device, it is rear to be grounded.In this way, just making blower motor low-speed running.Meanwhile it indicating
Lamp is bright.
2) middling speed operates
When a switch is on, as when controlling with low speed, heater relay is started.It is mounted on self-contained air-conditioner amplification
Micro computer (ECU) in device will calculate resulting air blower driving signal from TAO value, export through BLW terminal to power crystal
Pipe.Then, electric current flow to heater relay from battery, then to blower motor, then flow to power transistor and drum
It is grounded after blower resistance.In this way, making blower motor just to correspond to the rotation speed operation of air blower driving signal.Meanwhile it indicating
Lamp is lighted, and Lo (low), M1 (in 1), M2 (in 2), Hi (height) indicator light also according to circumstances may be shinny.
3) extra-high speed operating.
When a switch is on, the micro computer (ECU) for allowing to be mounted in self-contained air-conditioner amplifier connects TRl and TR2,
Drive heater relay and air blower relay.Then, electric current flow to heater relay from battery, then to drum
Blower motor, then to after blower fan relay to being grounded.In this way, operating blower motor with extra-high speed.Meanwhile
Indicator light is bright.
In the present embodiment, according to Ohm's law it is found that in same circuit, the electricity of electric current in conductor with conductor both ends
It is pressed into direct ratio, the resistance with conductor is inversely proportional.According to definition it is found that it could be assumed that
U=I × R (3.1)
When being transferred to 1 gear, three rated resistance series connection in circuit, obtain, the resistance in circuit is most according to (3.1)
Greatly, electric current is just minimum, so the power of air blower is just minimum.
When being transferred to 4 gear, three rated resistances in circuit, except conducting wire is per se with resistance, but can not ignored
Disregard, obtained according to (3.1), the resistance in circuit is minimum, and electric current is just maximum, so the power of air blower is just maximum.
The known total 12V of total voltage U, three rated resistances totally 6 Europe, the electric current when changing to 1,2,3,4 grade respectively in circuit
It is how many respectively
According to Ohm's law
I is total=I1=I2 (3.2)
R is total=R1+R2 (3.3)
U is total=U1+U2 (3.4)
When gear changes to 1 grade, three resistance are connected in route, and R is always 6 Europe.
Obtained according to Ohm's law: the electric current in route is 2A；
When gear changes to 2 grades, two resistance are connected in route, and R is always 4 Europe.
Obtained according to Ohm's law: the electric current in route is 3A；
When gear changes to 3 grades, a resistance is connected in route, and R is always 2 Europe.
Obtained according to Ohm's law: the electric current in route is 6A；
When gear changes to 4 grades, non-resistance is connected in route, and the resistance in conducting wire can be ignored, and is equivalent to
Access.
Experiment conclusion
Pass through simulation blower circuit experiment, it was therefore concluded that, when resistance is bigger, electric current is with regard to smaller, and power is with regard to smaller.When
Resistance is got over hour, and electric current is bigger, and power is bigger.
Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention, it is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of technical characteristic
It is equivalently replaced.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on,
It should be included within the scope of protection of this utility model.
Claims (7)
1. a kind of car electrics base components demonstrator, it is characterised in that: including series circuit teaching area, water temperature sensor circuit
Teaching area and blower circuit teaching area；Series circuit teaching area includes the 12V switch being connected in series, indicator light, electric current
Table, first resistor and second resistance, the second resistance ground connection, and the both ends of the ammeter, first resistor and second resistance
It is equipped with terminal jacks；The water temperature sensor circuit teaching area includes the ammeter and thermistor being connected on ECU, described
The other end of thermistor is grounded；Blower circuit teaching area includes that 12V switch, indicator light, ammeter, air blower are opened
Pass, resistance A, resistance B, resistance C and blower motor, described blower switch one end are serially connected on the ammeter, the air blast
The other end of machine switch is connected in parallel on the rear end of resistance A, resistance B, resistance C respectively, and connect with the blower motor.
2. a kind of car electrics base components demonstrator according to claim 1, it is characterised in that: the thermistor is
Negative tempperature coefficient thermistor.
3. a kind of car electrics base components demonstrator according to claim 1, it is characterised in that: the thermistor peace
On the water jacket of engine cylinder body or cylinder cap.
4. a kind of car electrics base components demonstrator according to claim 1, it is characterised in that: the blower switch
For rotary switch.
5. a kind of car electrics base components demonstrator according to claim 1, it is characterised in that: the blower switch
It is upper that there are four contact, the resistance A, resistance B, resistance C are connected in series, four contacts be sequentially connected with the resistance A, resistance B,
The both ends of resistance C.
6. a kind of car electrics base components demonstrator according to claim 1, it is characterised in that: the resistance A, resistance
B, the resistance value of resistance C is two ohm.
7. a kind of car electrics base components demonstrator according to claim 1, it is characterised in that: the first resistor and
The resistance value of second resistance is three ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822261832.5U CN209625573U (en) | 2018-12-30 | 2018-12-30 | A kind of car electrics base components demonstrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822261832.5U CN209625573U (en) | 2018-12-30 | 2018-12-30 | A kind of car electrics base components demonstrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209625573U true CN209625573U (en) | 2019-11-12 |
Family
ID=68448300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822261832.5U Expired - Fee Related CN209625573U (en) | 2018-12-30 | 2018-12-30 | A kind of car electrics base components demonstrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209625573U (en) |
-
2018
- 2018-12-30 CN CN201822261832.5U patent/CN209625573U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191112 Termination date: 20201230 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |