CN207301816U - Automobile water level controller - Google Patents
Automobile water level controller Download PDFInfo
- Publication number
- CN207301816U CN207301816U CN201721035205.9U CN201721035205U CN207301816U CN 207301816 U CN207301816 U CN 207301816U CN 201721035205 U CN201721035205 U CN 201721035205U CN 207301816 U CN207301816 U CN 207301816U
- Authority
- CN
- China
- Prior art keywords
- water level
- diode
- signal
- circuit
- resistance
- 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
Links
Abstract
The utility model discloses a kind of automobile water level controller, including：Level sensor circuit, voltage signal is converted to by the resistance signal of the water level detected；Signal processing circuit, receives and amplifies the voltage signal from level sensor circuit, and this voltage signal is made comparisons with the signal of reference voltage and exports high level and low level；Water level control warning circuit, the conducting of triode, the change of prompting water level are controlled according to the low and high level of electric signal processing circuit output.The controller of the utility model is by improving the way of output of comparator output terminal not current limliting, it is changed to output terminal current-limiting mode, constant-current control circuit is applied to the output terminal of product comparator, so that each function element of water level controller control module is all in controllable current range, will not because output terminal peripheral circuit it is bad influenced the failure of this product and even burnt.
Description
Technical field
It the utility model is related to a kind of automobile water level controller.
Background technology
The control mode of the automobile water level controller of mainstream is to use electric pole type water level switch currently on the market, utilizes water
Electric conductivity, two electrode conductions when there is water, resistance approach infinity during without water.Voltage will be produced using the change of its resistance
Change, recycle comparator/operational amplifier with set reference voltage compared with, export high or low level so as to control
Object, that is, anhydrous alarm is controlled.Its circuit can be divided into three parts：Water level detection circuit, comparison circuit, control circuit.
But client when there are some unexpected states, may cause product element when using output terminal incorporation way
Burn out, product failure.Although possessing fool proof technology in structure, it cannot be guaranteed that the reliability of output terminal peripheral circuit.
Utility model content
The purpose of this utility model is to solve the above-mentioned problems, there is provided a kind of automobile water level controller, the product of enhancing
Reliability and stability, avoid the occurrence of periphery interference either peripheral circuit the problem of bring itself product disabler or
Burn.
In order to achieve the above object, the utility model is achieved through the following technical solutions：
A kind of automobile water level controller, including：Level sensor circuit, electricity is converted to by the resistance signal of the water level detected
Press signal；Signal processing circuit, receives and amplifies the voltage signal from level sensor circuit, and by this voltage signal and benchmark
The signal of voltage makes comparisons and exports high level and low level；Water level control warning circuit, exports according to electric signal processing circuit
Low and high level control the conducting of triode, the change of prompting water level；It is characterized in that：The water level control warning circuit bag
Resistance (R6, R7), diode (D2, D3, D4), zener diode (ZD3), triode (Q2) are included, the signal processing circuit
The signal output part of comparator is connected with one end of resistance (R6), and the other end of resistance (R6) is connecting diode (D2) just respectively
Pole and the collector of triode (Q2), the cathode of the anode connection diode (D3) of diode (D2), the anode of diode (D3)
Ground connection, the emitter of triode (Q2) connect the cathode of zener diode (ZD3), zener diode (ZD3) by resistance (R7)
Anode connection output voltage (VOUT), the anode of the collector connection diode (D4) of triode (Q2), diode (D4) is just
Pole connection output voltage (VOUT)。
Further, the power input of the level sensor circuit is connected with diode.
Further, the level sensor circuit loong shunt has transient voltage suppressor.
The beneficial effects of the utility model are：The controller of the utility model is by improving comparator output terminal not current limliting
The way of output, is changed to output terminal current-limiting mode, constant-current control circuit has been applied to the output terminal of product comparator so that water level
Each function element of controller control module all in controllable current range, will not because of the bad of output terminal peripheral circuit and
The failure for having influenced this product is even burnt.Not only working method does not change, and strengthen product reliability and
Stability, extends the service life of product, will not because circumscribing peripheral circuit it is bad be affected, effectively prevent production
Product fail.In the selection of parameter, in order to make product prevent power positive cathode reversal connection, a diode is employed in input terminal；
In order to keep the stability of voltage, voltage stabilizing output mode is employed；In order to suppress Electromagnetic Compatibility, various parameters are employed
Filter capacitor solve the problems, such as height frequency interferences；Electro-static Driven Comb is suppressed using TVS pipe.
Brief description of the drawings
Fig. 1 is the circuit diagram of the utility model water level controller.
Embodiment
Specific embodiment of the present utility model is further described below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of automobile water level controller, including：Level sensor circuit 1, by the resistance of the water level detected
Signal is converted to voltage signal；Signal processing circuit 2, receives and amplifies the voltage signal from level sensor circuit 1, and by this
Voltage signal makes comparisons with the signal of reference voltage and exports high level and low level；Water level control warning circuit 3, according to telecommunications
Low and high level that number process circuit 2 exports controls the conducting of triode, the change of prompting water level；It is characterized in that：The water
Position control warning circuit 3 includes resistance R6, resistance R7, diode D2, diode D3, diode D4, zener diode ZD3, three
The signal output part of pole pipe Q2, the comparator UI of the signal processing circuit 2 are connected with one end of resistance R6, and resistance R6's is another
End connects the cathode of diode D2 and the collector of triode Q2 respectively, and the anode of diode D2 connects the cathode of diode D3,
The anode ground connection of diode D3, the emitter of triode Q2 pass through the cathode of resistance R7 connection zener diodes ZD3, two pole of voltage stabilizing
The anode connection output voltage V of pipe ZD3OUT, the anode of the collector connection diode D4 of triode Q2, the cathode of diode D4
Connect output voltage VOUT。
In the utility model, electrode type water level sensor is used in level sensing unit 1, electrode type water level sensor by
Hermetically sealed isolation film oil-filled sensor and built-in high-performance microprocessor are formed, can be to the non-linear of sensor, temperature drift etc.
The digitlization correcting process in gamut is carried out, and has HART communication protocol output and simulation output.In water level sensor side
Connect a resistance, and access D.C. regulated power supply, then resistance signal can be converted to by voltage signal by partial pressure of connecting.
Signal processing unit 2 is mainly made of operational amplifier and additional resistance.Ginseng is used as by resistance series connection partial pressure
Examine reference voltage, water level sensor according to detected water or it is anhydrous when, respective resistance values and series resistance can be produced and produced point
Pressure, the signal of the reference voltage of the input signal of this partial pressure partial pressure in series with a resistor is made comparisons, and output produces low and high level
To control the conducting of triode.
The voltage signal of comparator output makes the height of its output by the constant-current circuit that triode, resistance, diode are formed
It is in the case that low transition mode is constant, the electric current of output terminal is constant in controlled range, will not be stranded because of output terminal
The failure that is bad and having influenced this product of peripheral circuit is even burnt.
In the selection of parameter, in order to make product prevent power positive cathode reversal connection, a diode is employed in input terminal,
In the entire system, in order to keep the stability of voltage, voltage stabilizing output mode is employed.In order to suppress product E MC (electromagnetic compatibilities
Property), the filter capacitors of various parameters is employed to solve the problems, such as height frequency interferences, and using TVS pipe, (transient voltage suppresses two
Pole pipe) suppress ESD (Electro-static Driven Comb).Product all materials use vehicular grade, ensure that the reliability and stabilization of product
Property.
The utility model is changed to output terminal current-limiting mode by improving the way of output of comparator output terminal not current limliting,
Constant-current control circuit has applied to the output terminal of product comparator so that each function element of water level controller control module is all
In controllable current range, will not because output terminal peripheral circuit it is bad influenced the failure of this product and even burnt.
Not only working method does not change, but also the reliability and stability of the product strengthened, extends the service life of product, no
Can because circumscribing peripheral circuit it is bad be affected, effectively prevent product failure.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on, should be included in the utility model
Protection domain within.
Claims (3)
1. a kind of automobile water level controller, including：Level sensor circuit, voltage is converted to by the resistance signal of the water level detected
Signal；Signal processing circuit, receives and amplifies the voltage signal from level sensor circuit, and this voltage signal and benchmark is electric
The signal of pressure makes comparisons and exports high level and low level；Water level control warning circuit, exports according to electric signal processing circuit
Low and high level controls the conducting of triode, the change of prompting water level；It is characterized in that：The water level control warning circuit includes
Resistance (R6, R7), diode (D2, D3, D4), zener diode (ZD3), triode (Q2), the ratio of the signal processing circuit
Signal output part compared with device is connected with one end of resistance (R6), and the other end of resistance (R6) connects the cathode of diode (D2) respectively
With the collector of triode (Q2), the cathode of the anode connection diode (D3) of diode (D2), the anode of diode (D3) connects
Ground, the emitter of triode (Q2) connect the cathode of zener diode (ZD3) by resistance (R7), zener diode (ZD3)
Anode connection output voltage (VOUT), the anode of the collector connection diode (D4) of triode (Q2), the cathode of diode (D4)
Connect output voltage (VOUT)。
2. automobile water level controller according to claim 1, it is characterised in that：The power input of the level sensor circuit
End is connected with diode (D1).
3. automobile water level controller according to claim 1, it is characterised in that：The level sensor circuit loong shunt has wink
Time variant voltage suppresses diode (TVS).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721035205.9U CN207301816U (en) | 2017-08-18 | 2017-08-18 | Automobile water level controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721035205.9U CN207301816U (en) | 2017-08-18 | 2017-08-18 | Automobile water level controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207301816U true CN207301816U (en) | 2018-05-01 |
Family
ID=62444622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721035205.9U Expired - Fee Related CN207301816U (en) | 2017-08-18 | 2017-08-18 | Automobile water level controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207301816U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115128989A (en) * | 2022-08-30 | 2022-09-30 | 深圳时代能创能源科技有限公司 | Intelligent water level control system of miniature water tower |
-
2017
- 2017-08-18 CN CN201721035205.9U patent/CN207301816U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115128989A (en) * | 2022-08-30 | 2022-09-30 | 深圳时代能创能源科技有限公司 | Intelligent water level control system of miniature water tower |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203455642U (en) | Multi-sensor control circuit | |
| CN102628889B (en) | Voltage sampling circuit | |
| CN201113523Y (en) | Direct-current input -type charger | |
| CN203376387U (en) | Over-voltage detection circuit and PFC circuit using the same | |
| CN205334254U (en) | Water level monitor control device | |
| CN206074715U (en) | A kind of direct current power-fail detection circuit | |
| CN207301816U (en) | Automobile water level controller | |
| CN104868470A (en) | High-precision symmetric voltage stabilizing oscillation type commercial power monitoring system | |
| CN104779577A (en) | Over-current protection circuit | |
| CN101833350B (en) | Midpoint voltage self-adaptation device of magnetic resistor network and self-adaptation method | |
| CN105576617A (en) | Speed frequency output protection circuit of automobile instrument | |
| CN204331523U (en) | Voltage-regulating circuit | |
| CN205160047U (en) | Overvoltage crowbar and device | |
| CN202886443U (en) | Voltage sampling circuit | |
| CN207113900U (en) | A kind of encoder opto-electronic compensation circuit and photoelectric encoder | |
| CN107727992A (en) | A kind of load circuit and its wire break detection method | |
| CN210245032U (en) | Power supply dynamic load circuit of liquid crystal display screen | |
| CN209117756U (en) | Fan monitor | |
| CN203457042U (en) | Switching power supply of pulse switching machine | |
| CN209046523U (en) | Power-on and power-off sequencing circuit and electronic equipment | |
| CN208971001U (en) | A kind of leakage-protective lighting distribution box | |
| CN208006203U (en) | A kind of machine Control system cabinet with humidity alarm function | |
| CN104868441A (en) | Symmetric voltage-stabilizing oscillation-type system for monitoring commercial power | |
| CN216434328U (en) | Electronic equipment and open circuit detection circuit thereof | |
| CN209765021U (en) | battery pack on-line detection circuit of BMS |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20180501 Termination date: 20180818 |