CN207869084U - A kind of electromagnetic valve switch control device - Google Patents
A kind of electromagnetic valve switch control device Download PDFInfo
- Publication number
- CN207869084U CN207869084U CN201820338306.1U CN201820338306U CN207869084U CN 207869084 U CN207869084 U CN 207869084U CN 201820338306 U CN201820338306 U CN 201820338306U CN 207869084 U CN207869084 U CN 207869084U
- Authority
- CN
- China
- Prior art keywords
- solenoid valve
- driving circuit
- control signal
- control device
- low side
- 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 provides a kind of electromagnetic valve switch control device, and microcontroller sends out control signal and carries out switch control to solenoid valve；Wherein, flash driving circuit and low side driving circuit are provided between microcontroller and solenoid valve, flash driving circuit is arranged between power end and solenoid valve anode, and low side driving circuit is arranged between ground terminal and solenoid valve negative terminal.The electromagnetic valve switch control device of the utility model is provided with flash driving circuit and low side driving circuit, the switch of solenoid valve and the control mode of switch are controlled by exporting control instruction so that solenoid valve can be connected under two kinds of control strategies that flash controls and low side controls.
Description
Technical field
The utility model belongs to solenoid valve control technical field, more particularly to a kind of electromagnetic valve switch control device.
Background technology
The switch of solenoid valve there are two types of different switch-control strategies, the first be solenoid valve be serially connected in MOSFET (or after
Electric appliance) between power supply flash control switch, another kind is that solenoid valve is serially connected in MOSFET (or relay) between ground
Low side control switch.
Existing solenoid valve control can only select a kind of above-mentioned switch-control strategy, in the case of circuit conditions complexity,
It cannot be satisfied multifarious requirement.
Utility model content
The main purpose of the utility model is to provide a kind of electromagnetic valve switch control device, microcontroller sends out control letter
Number switch control is carried out to solenoid valve；Wherein, flash driving circuit and the driving of low side are provided between microcontroller and solenoid valve
Circuit, flash driving circuit are arranged between power end and solenoid valve anode, and low side driving circuit is arranged in ground terminal and electromagnetism
Between valve negative terminal.
Preferable scheme is that being provided with high-side current detection circuit between flash driving circuit and solenoid valve.
Preferable scheme is that being both provided with field-effect tube in flash driving circuit and low side driving circuit.
Preferable scheme is that further including multiple diodes, the first diodes in parallel is at solenoid valve both ends, and the second diode is simultaneously
It is associated in solenoid valve and high-side current detection circuit both ends.
Preferable scheme is that control signal includes first control signal and second control signal, first control signal from
Low side driving circuit input, second control signal are inputted from flash driving circuit；First control signal controls solenoid valve and carries out just
Control or negative control, second control signal control the switch of solenoid valve.
The beneficial effects of the utility model：The electromagnetic valve switch control device of the utility model is provided with flash driving circuit
And low side driving circuit, control the switch of solenoid valve and the control mode of switch by exporting control instruction so that electromagnetism
Valve can be connected under two kinds of control strategies that flash controls and low side controls.
Description of the drawings
Fig. 1 is the functional block diagram of the electromagnetic valve switch control device of the utility model embodiment；
Fig. 2 is the circuit diagram of the electromagnetic valve switch control device of the utility model embodiment.
Specific implementation mode
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 creative efforts
The every other embodiment obtained, shall fall within the protection scope of the present invention.
By Fig. 1 and Fig. 2 it is found that the utility model provides a kind of electromagnetic valve switch control device, microcontroller 1 sends out control
Signal carries out switch control to solenoid valve 2；Wherein, flash driving circuit 31 and low is provided between microcontroller 1 and solenoid valve 2
Side driving circuit 41, flash driving circuit 31 are arranged between power end and solenoid valve anode, and the low setting of side driving circuit 41 exists
Between ground terminal and solenoid valve negative terminal.
Specifically, control signal includes first control signal and second control signal, first control signal is driven from low side
Dynamic circuit 41 inputs, and second control signal is inputted from flash driving circuit 31；First control signal control solenoid valve 2 is just controlled
Or negative control, second control signal control the switch of solenoid valve 2.
Preferably, high-side current detection circuit 32 is provided between flash driving circuit 31 and solenoid valve 2, specifically, this
MAX472 chips are selected to carry out high side current detection in embodiment, MAX472 chips are high side current detection amplifiers, it has one
A current output terminal, can simply implement the conversion of the current/voltage of point referenced to ground with a resistance, and can work
In compared with Width funtion.
Preferably, it is both provided with field-effect in the flash driving circuit 31 in the present embodiment and low side driving circuit 41
Pipe, specifically, in the present embodiment flash driving circuit 31 select be model I RF7309 field-effect tube, low side driving electricity
What road 41 was selected is the field-effect tube of model FDS4953.
Preferably, further include multiple diodes in the electromagnetic valve switch control device of the present embodiment, the first diode 51 is simultaneously
2 both ends of solenoid valve are associated in, the second diode 53 is connected in parallel on 32 both ends of solenoid valve 2 and high-side current detection circuit.Specifically, the
One diode 51 is diode D6 in the present embodiment, and the second diode 53 is diode D4 and diode D6 in the present embodiment
Tandem compound.
Diode is the counter electromotive force energy for eliminating solenoid valve 2.Due to the inductance characteristic of solenoid valve 2, work as solenoid valve
It is often operated on off state, in the moment for opening to closing, will produce prodigious counter electromotive force, if this counter electromotive force is not added with
To eliminate, all components being connected with solenoid valve will certainly be influenced.Due to cumulative effect, relevant component for a long time compared with
Under the impact of high counter electromotive force, the problems such as functional deficiency certainly will be generated or even damaged.First in the parallel connection of solenoid valve both ends
After diode 51, when solenoid valve generates larger counter electromotive force by opening a turn pass, due to the direction of this counter electromotive force and first
The conducting direction of diode 51 is consistent, so solenoid valve and the first diode 51 under the action of this counter electromotive force, form one
The counter electromotive force energy of closed loop, such solenoid valve will in the form of heat be discharged rapidly by the first diode 51.And
And conducting resistance all very littles of the resistance of solenoid valve 2 and the first diode 51, it is similar to short circuit, so counter electromotive force can be with
Speed quickly discharges, and ensures that will not cause to impact to other components in this way, while also ensuring solenoid valve 2 under
As soon as before control signal, counter electromotive force is discharged, without being impacted to the control of next step.If
If dischargeing counter electromotive force not yet before next control signal, solenoid valve 2 one is opened, due to the pole of power of electromagnetic valve
Property with counter electromotive force on the contrary, 2 power supply of solenoid valve first needs to balance counter electromotive force, could normal control.Such one or two pole
Pipe 51 ensures that safety and the controllability of system control.
In conclusion the electromagnetic valve switch control device of the present embodiment is provided with flash driving circuit 31 and low side drives
Circuit 41 controls the switch of solenoid valve 2 and the control mode of switch so that solenoid valve 2 is in flash by exporting control instruction
It can be connected under two kinds of control strategies of control and the control of low side.
The technical principle of the utility model is described above in association with specific embodiment.These descriptions are intended merely to explain this reality
With novel principle, and it cannot be construed to the limitation to scope of protection of the utility model in any way.Based on the explanation herein,
Those skilled in the art would not require any inventive effort the other specific implementation modes that can associate the utility model,
These modes are fallen within the scope of protection of the utility model.
Claims (5)
1. a kind of electromagnetic valve switch control device, microcontroller sends out control signal and carries out switch control to solenoid valve；
It is characterized in that：
Flash driving circuit and low side driving circuit, the flash driving are provided between the microcontroller and the solenoid valve
Circuit is arranged between power end and the solenoid valve anode, and the low side driving circuit is arranged in ground terminal and the solenoid valve
Between negative terminal.
2. electromagnetic valve switch control device according to claim 1, it is characterised in that：
It is provided with high-side current detection circuit between the flash driving circuit and the solenoid valve.
3. electromagnetic valve switch control device according to claim 2, it is characterised in that：
It is both provided with field-effect tube in the flash driving circuit and the low side driving circuit.
4. electromagnetic valve switch control device according to claim 3, it is characterised in that：
Further include multiple diodes, the first diodes in parallel is at the solenoid valve both ends, and the second diodes in parallel is in the electromagnetism
Valve and the high-side current detection circuit both ends.
5. electromagnetic valve switch control device according to any one of claims 1 to 4, it is characterised in that：
The control signal includes first control signal and second control signal, and the first control signal is driven from the low side
Dynamic circuit input, the second control signal are inputted from the flash driving circuit；
The first control signal controls the solenoid valve and is just being controlled or born control, and the second control signal controls the electromagnetism
The switch of valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820338306.1U CN207869084U (en) | 2018-03-13 | 2018-03-13 | A kind of electromagnetic valve switch control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820338306.1U CN207869084U (en) | 2018-03-13 | 2018-03-13 | A kind of electromagnetic valve switch control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207869084U true CN207869084U (en) | 2018-09-14 |
Family
ID=63456403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820338306.1U Expired - Fee Related CN207869084U (en) | 2018-03-13 | 2018-03-13 | A kind of electromagnetic valve switch control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207869084U (en) |
-
2018
- 2018-03-13 CN CN201820338306.1U patent/CN207869084U/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: 20180914 Termination date: 20200313 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |