CN111399368A - Redundancy technology of multi-path electromagnetic valve driving system - Google Patents
Redundancy technology of multi-path electromagnetic valve driving system Download PDFInfo
- Publication number
- CN111399368A CN111399368A CN202010222863.9A CN202010222863A CN111399368A CN 111399368 A CN111399368 A CN 111399368A CN 202010222863 A CN202010222863 A CN 202010222863A CN 111399368 A CN111399368 A CN 111399368A
- Authority
- CN
- China
- Prior art keywords
- electromagnetic valve
- controller
- isolation
- module
- solenoid valve
- 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.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B9/00—Safety arrangements
- G05B9/02—Safety arrangements electric
- G05B9/03—Safety arrangements electric with multiple-channel loop, i.e. redundant control systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Safety Devices In Control Systems (AREA)
Abstract
The invention discloses a redundancy technology of a multi-path electromagnetic valve driving system, which comprises a normal side and a redundancy side. The multi-path electromagnetic valve driving system comprises the following modules: the device comprises a power supply module, a current detection module, an analog-to-digital conversion module, a controller, a switch tube driving module, an electromagnetic valve driving system, an isolation/switching module and a multi-path electromagnetic valve. The power supply module is used for supplying power for the electromagnetic valve to work; the current detection module is used for detecting the current of the electromagnetic valve; the analog-to-digital conversion module is used for converting the analog quantity into digital quantity and sending the digital quantity to the controller; the controller is used for making a decision on the current signal in real time; the switching tube driving module is used for driving a switching tube; the electromagnetic valve driving system is used for driving the electromagnetic valve to work; the isolation/switching module is used for realizing fault isolation and switching to a redundancy side after a fault occurs on a normal side; the invention has the advantages that when the multi-path electromagnetic valve driving fault at the normal side causes the multi-path electromagnetic valve not to meet a certain current requirement, the fault generating side is automatically isolated and the multi-path electromagnetic valve is instantly switched to the redundancy side to realize the continuous normal work of the multi-path electromagnetic valve.
Description
Technical Field
The invention belongs to the technical field of redundancy, and particularly relates to a redundancy technology of a multi-path electromagnetic valve driving system.
Background
The electromagnetic valve is widely applied to industrial control systems and used for adjusting parameters such as flow, direction and speed. The electromagnetic valve driving system is a precondition for normal work of various electromagnetic valves. However, the switch tube in the multi-way electromagnetic valve driving system is easy to fail, i.e. short circuit and open circuit due to long-time operation in the on-off state of large current, so that the normal operation of the electromagnetic valve connected in series with the switch tube is influenced, the electromagnetic valve is always on or off, and the normal operation of the control system with the electromagnetic valve is influenced.
Disclosure of Invention
The invention aims to overcome the defects of the shutdown repair failure multi-way solenoid valve driving system. The invention applies the redundancy technology to the driving system of the electromagnetic valve and provides an on-line instant redundancy technology of a multi-path electromagnetic valve driving system.
To solve the problem of offline non-immediate repair of a faulty multi-path electromagnetic valve driving system, the invention adopts the technical scheme that:
1. a multi-way solenoid valve drive system redundancy technique, comprising: the device comprises a power supply module, a current detection module, an analog-to-digital conversion module, a controller, a switch tube driving module, an electromagnetic valve driving system, an isolation/switching module and a multi-path electromagnetic valve.
2. In the above scheme, the power supply module includes two voltage outputs. One voltage is used for supplying power for the quick opening of a multi-path electromagnetic valve; the other voltage is used for maintaining and supplying power for the current of the multi-way solenoid valve.
3. In the above scheme, the current detection module includes high accuracy sampling resistance and current detection chip, high accuracy sampling resistance with the multichannel solenoid valve is established ties, converts current signal into voltage signal and exports for the current detection chip, and the output of current detection chip is connected to analog-to-digital conversion's input. The current detection chip controls the detection value of the current within the input voltage range of the analog-to-digital conversion module by properly amplifying or reducing the voltage signals at two ends of the high-precision sampling resistor.
4. In the above scheme, the input of the analog-to-digital conversion module is connected with the output of the current detection module, and the output of the analog-to-digital conversion module is connected with the input of the master and slave controllers, and the analog-to-digital conversion module is used for converting the analog quantity output by the current detection module into the digital quantity which can be processed by the master and slave controllers.
5. In the above aspect, the controller includes: the input of the controller (including the master controller and the slave controller) is connected with the output of the analog-to-digital conversion module, and the output of the controller is connected with the switching tube driving module and the isolation/switching module. The controller is connected with the switch tube driving module for the following purposes: the controller controls the on-off of the switch tube according to the input of the analog-to-digital conversion module, and the purpose that the controller is connected with the isolation/switching module is as follows: the controller controls the normal side operation or the redundant side operation according to the input of the analog-to-digital conversion module. The master controller is connected with the slave controller together, the two controllers can communicate to determine the control right, the master controller takes over the control right normally to generate the current waveform required by the multi-path electromagnetic valve normally, a watchdog signal is given to the slave controller regularly, and the slave controller is in a hot backup state (initialization is completed). In case of failure, the master controller stops the watchdog signal to the slave controller and the slave controller wakes up from the hot backup state to take over the control right to take charge of the normal work of the redundant side.
6. In the above aspect, the solenoid valve driving system includes: the electromagnetic valve redundancy driving system is responsible for driving the electromagnetic valve on the redundancy side after a fault. The input of the electromagnetic valve driving system is connected with the switch tube driving module, the output of the electromagnetic valve driving system is connected with the electromagnetic valve, and the on and off of the switch tube control the electrification and the discharge of the electromagnetic valve, so that the required electromagnetic valve current waveform is generated.
7. In the above scheme, the input of the isolation/switching module is connected with the controller, and the output of the isolation/switching module is connected with the electromagnetic valve. Normally, the isolation/switching module at the normal side is in a non-isolation state, and the isolation/switching module at the redundant side is in an isolation state. When a fault occurs, the isolation/switching module at the fault occurrence side is in an isolation state, and the isolation/switching module at the redundant side is in a non-isolation state, so that fault isolation and switching of the fault occurrence side to the redundant side are realized when the fault occurs.
8. In the above scheme, the multi-way electromagnetic valve refers to a plurality of switching electromagnetic valves, and has only two states of complete opening and complete closing, and no intermediate state. The electromagnetic valve is connected in series with a switch tube in the electromagnetic valve driving system, and the on and off of the electromagnetic valve are realized by controlling the on and off of the switch tube.
9. In the scheme, which way of electromagnetic valve works is specifically needed, and only a selection enabling signal is needed to be sent to the way of electromagnetic valve by the controller. And similarly, the solenoid valve does not need to work, and only a selective disabling signal is needed to be sent to the solenoid valve by the controller.
10. In the above scheme, the controller is responsible for control signal output in the solenoid valve driving system and disable or enable signal output of the isolation/switching module, and the analog-to-digital conversion module is responsible for converting the current signal of the current detection module into a digital signal and then inputting the digital signal into the controller, specifically as follows:
(1) in normal time: the controller firstly selects an enabling signal for the solenoid valve needing to work, then takes the current waveform needed by the solenoid valve as a reference, and compares the reference signal at each moment with the current actually passing through the solenoid valve. If the difference value between the actual value and the reference value exceeds a threshold value, the controller drives a disabling signal to the electromagnetic valve, and the power supply of the electromagnetic valve is closed to reduce the current of the electromagnetic valve to a required range; similarly, when the difference value between the reference value and the actual value exceeds a threshold value, the controller drives an enabling signal to the electromagnetic valve, and the power supply of the electromagnetic valve is switched on to enable the current of the electromagnetic valve to rise to a required range;
(2) when in failure: and when the difference value between the actual value of the current of the electromagnetic valve and the reference value exceeds the current threshold value in normal operation, judging that the fault occurs. The main concern after the failure of the switching tube is the isolation of the failure driving system of the solenoid valve and the switching of the failure driving system of the solenoid valve to the redundant side for continuous operation. For the isolation of the electromagnetic valve fault driving system, only one isolation enabling signal is needed to be sent to the isolation/switching module on the fault occurrence side by the controller. For the situation that the electromagnetic valve fault driving system is switched to the redundant side to continue working, only one isolation disabling signal is needed to be sent to the isolation/switching module of the redundant side by the controller. The order for isolation and switching is: isolation first and switching later.
The invention has the beneficial effects that: the invention realizes the on-line real-time switching after the multi-path electromagnetic valve driving system fails, and improves the stability and reliability of the system.
Drawings
FIG. 1 is a block diagram of the redundant technology of the multi-way solenoid valve driving system of the present invention;
FIG. 2 is a diagram of an embodiment of the redundancy technique of the multi-way solenoid valve driving system of the present invention;
FIG. 3 is a schematic diagram of the peak and sustain driving modes under the dual voltage driving of the single solenoid valve;
FIG. 4 is a flowchart of the redundancy technique of the multi-way solenoid valve driving system according to the present invention.
Detailed Description
The following description of the embodiments of the present invention is provided in order to better understand the present invention for those skilled in the art with reference to the accompanying drawings. It is to be expressly noted that in the following description, a detailed description of known functions and designs will be omitted when it may obscure the subject matter of the present invention.
Example (b):
FIG. 1 is a block diagram of the redundancy technique of the multi-way solenoid valve driving system of the present invention, and is a diagram of an embodiment of the redundancy technique of the multi-way solenoid valve driving system of the present invention, as shown in FIG. 2, designed on the basis of FIG. 1. The device comprises a power supply module 1, a current detection module 2, an analog-to-digital conversion module 3, a controller 4, a switch tube driving module 5, an electromagnetic valve driving system 6, an isolation/switching module 7 and a multi-path electromagnetic valve 8.
The power module 1 includes a 24V dc power supply and a 48V dc power supply, and is connected to the solenoid valve driving switching tubes Qa and Qb. The 24V direct current power supply supplies power for the maintaining current of the multi-way electromagnetic valve, and the 48V direct current power supply supplies power for the quick opening of the multi-way electromagnetic valve.
The current detection module 2 comprises a sampling resistor with the precision of 1% in a milliohm level and a current detection chip INA240A1, the high-precision sampling resistor is connected with the electromagnetic valve in series, the current detection module 2 converts an electromagnetic valve current signal into a voltage signal and outputs the voltage signal to the analog-to-digital conversion module 3, and the output of the current detection chip is connected to the input end of the analog-to-digital conversion module 3. The current detection chip controls the detection value of the current within the input voltage range of the analog-to-digital conversion module 3 by properly amplifying or reducing the voltage signals at two ends of the high-precision sampling resistor.
The input of the analog-to-digital conversion module 3 is connected with the output of the current detection module, the output of the analog-to-digital conversion module 3 is connected with the input of the master and slave controllers, and the analog quantity output by the current detection module is converted into the digital quantity which can be processed by the master and slave controllers. The analog-to-digital conversion module 3 adopts a high-precision AD with a 16-bit 4MHz sampling rate.
The controller 4 comprises a master controller and a slave controller, and the adopted controller 4 chip is an STM32F 407. The output of the controller 4 is connected to the switching tube driving module 5 and the isolation/switching module. The controller 4 is connected to the switching tube driving module 5 for the purpose of: the controller 4 controls the on-off of the switch tube according to the input of the analog-to-digital conversion module 3; the controller 4 is connected to the isolation/switching module 7 for the purpose of: the controller 4 determines whether the normal side operates or the redundant side operates by judging whether a failure occurs or not according to the input of the analog-to-digital conversion module. The main controller is connected with the secondary controllers, and the two controllers 4 can communicate with each other to determine which controller should take over the control right, the main controller takes over the control right in normal time, and the secondary controller takes over the control right in failure. And considering that the switching tubes adopted in the whole system are all 100V N-type switching tubes with low on-resistance, such as voltage margin, loss and thermal stress of the switching tubes.
The input of the switch tube driving module 5 is connected with the controller 4, and the output thereof is connected with a switch tube in the electromagnetic valve driving system 6 (including an electromagnetic valve normal driving system and an electromagnetic valve redundant driving system) in order to drive the switch tube to be switched on or switched off.
The solenoid valve drive system 6 includes: the electromagnetic valve redundancy driving system is responsible for driving the electromagnetic valve at the redundancy side after a fault. The input of the electromagnetic valve driving system is connected with the switch tube driving module 5, and the output of the electromagnetic valve driving system is connected with the electromagnetic valve to control the electrification and the discharge of the electromagnetic valve so as to generate a required electromagnetic valve current waveform. The discharge of the solenoid valve is performed by a schottky diode D connected in parallel with the solenoid valve.
The input of the isolation/switching module 7 is connected with the controller 4, the output of the isolation/switching module 7 is connected with the electromagnetic valve 8, and the isolation/switching module 7 is used for realizing fault isolation and switching of a normal lateral redundancy side when a fault occurs. The isolation/switching module 7 adopts a structure that two groups of switch tubes (two switch tubes are connected in parallel to form one group) are connected in series, so that the advantages are that: the switching tube failure rate of the isolation/switching module 7 is reduced to a low level.
The multi-way electromagnetic valve 8 is a plurality of switch electromagnetic valves, and only has two states of complete opening and complete closing without an intermediate state. The electromagnetic valve 8 is connected in series with a switch tube in the electromagnetic valve driving system 6, and the on and off of the electromagnetic valve 8 are realized by controlling the on and off of the switch tube. The redundancy relating only to the solenoid valve drive system is not related to the redundancy of the solenoid valves, i.e. the solenoid valves are common on the normal side and the redundant side, because of the redundancy of the multiplex solenoid valve drive system.
Specifically, which way of electromagnetic valve works is needed, and only a cylinder selection enabling signal is needed to be sent to the way of electromagnetic valve by the controller. And in the same way, the solenoid valve does not need to work, and only a cylinder selection disabling signal is needed to be driven by the controller for the solenoid valve.
The working process of the redundancy technical example of the multi-path electromagnetic valve driving system comprises the following steps:
in normal time: firstly, the main controller 4 takes over the control right to select the enabling signal for the solenoid valve needing to work, then the current waveform needed by the solenoid valve 8 is taken as a reference, and the controller 4 compares the reference signal at each moment with the current actually passing through the solenoid valve 8. If the difference between the actual value of the current of the solenoid valve 8 and the reference value exceeds a threshold value, the controller 4 gives a disable signal to the drive of the solenoid valve 8, and the power supply of the solenoid valve 8 is closed to enable the current of the solenoid valve 8 to be discharged through the parallel Schottky diode D so as to enable the current to be reduced to a required range; similarly, when the difference between the reference value and the actual value exceeds a threshold, the controller 4 drives the solenoid valve 8 to generate an enable signal, and the power supply of the solenoid valve 8 is switched on to enable the current of the solenoid valve 8 to rise to a required range;
when in failure: the controller 4 compares the actual value of the current of the solenoid valve 8 with a reference value, and determines that a fault has occurred when the difference between the actual value of the current of the solenoid valve 8 and the reference value exceeds a current threshold value at the time of normal operation. And determining that the switch tube in the series driving system of the electromagnetic valve 8 has a fault when the current of the electromagnetic valve 8 does not meet the requirement of normal operation. When the difference value between the actual value of the current of the electromagnetic valve 8 and the reference value exceeds the allowable threshold value of the current of the electromagnetic valve 8 in normal operation, the short circuit is judged; when the difference value between the reference value and the actual value of the current of the solenoid valve 8 exceeds the allowable threshold value of the current of the solenoid valve 8 in normal operation, the short circuit is judged. After the fault of the switching tube occurs, the solenoid valve fault driving system needs to be isolated, and the controller 4 gives an isolation enabling signal to the isolation/switching module 7 on the normal side (under the normal condition of the solenoid valve, the isolation/switching module 7 on the normal side is in a non-isolation state) and gives an isolation disabling signal to the isolation/switching module 7 on the redundant side (under the normal condition of the solenoid valve, the isolation/switching module 7 on the redundant side is in an isolation state).
Fig. 3 shows a single solenoid valve employing a peak and hold drive scheme. This driving scheme is divided into 5 stages. Stage 1 (stage P1 in fig. 3): applying a high voltage in the power supply across the solenoid achieves that the current of the solenoid reaches the upper peak limit (denoted Ip _ max in fig. 3) quickly. Stage 2 (stage P2 in fig. 3): in the peak current holding stage, the solenoid valve is charged and discharged by continuously switching on and off a switching tube connected in series with the solenoid valve in the solenoid valve driving system, so that the solenoid valve current is limited within the range of the upper limit and the lower limit of the peak current (Ip _ max represents the upper limit of the peak current, and Ip _ min represents the lower limit of the peak current in fig. 3), and the solenoid valve is rapidly opened. Stage 3 (stage P3 in fig. 3): in the transition process of reducing the current of the solenoid valve from the peak value to the maintaining current, the discharging of the solenoid valve is realized by turning off a switching tube which is connected with the solenoid valve in series in the solenoid valve driving system, so that the maintaining current of the solenoid valve is reduced to the lower limit of the maintaining current (Ih _ min in fig. 3 represents the lower limit of the maintaining current). Stage 4 (stage P4 in fig. 3): at this time, the power supply for supplying power to the electromagnetic valve is a low-voltage power supply, and similarly to the stage 2, the charging and discharging of the electromagnetic valve are realized by continuously switching on and off a switching tube which is connected in series with the electromagnetic valve in the electromagnetic valve driving system, so that the current of the electromagnetic valve is limited within the range of the upper limit and the lower limit of the maintaining current (Ih _ max represents the upper limit of the maintaining current, and Ih _ min represents the lower limit of the maintaining current in fig. 3), and the maintaining and switching-on after the electromagnetic valve is rapidly opened is. Stage 5 (stage P5 in fig. 3): the electromagnetic valve is discharged by a switching tube which is connected with the electromagnetic valve in series in the electromagnetic valve turn-off driving system, so that the electromagnetic valve maintaining current is reduced to 0 to turn off the electromagnetic valve. The first 4 phases (phases P1-P4 in fig. 3) effect the opening of the solenoid valve, while the last 1 phase effects the closing of the solenoid valve.
FIG. 4 is a flowchart of the redundancy technique of the multi-way solenoid valve driving system according to the present invention. Firstly, the controller 4 carries out corresponding initialization, the current works in a normal range according to the working process in the normal time of the appeal, and once the current of the electromagnetic valve 8 is higher than the upper current limit (the switch tube is open) and lower than the lower current limit (the switch tube is open), the isolation/switching module 7 is started to carry out fault isolation and the fault board is switched to the redundant board.
Although illustrative embodiments of the present invention have been described above to facilitate the understanding of the present invention by those skilled in the art, it should be understood that the present invention is not limited to the scope of the embodiments, and various changes may be made apparent to those skilled in the art as long as they are within the spirit and scope of the present invention as defined and defined by the appended claims, and all matters of the invention which utilize the inventive concepts are protected.
Claims (10)
1. A multi-way solenoid valve driving system redundancy technology is characterized by comprising the following steps: the device comprises a power supply module, a current detection module, an analog-to-digital conversion module, a controller, a switch tube driving module, an electromagnetic valve driving system, an isolation/switching module and a multi-path electromagnetic valve.
2. The multiple solenoid valve drive system redundancy technique of claim 1, wherein the power module comprises two voltage outputs: one voltage is used for supplying power for the quick opening of the multi-way electromagnetic valve, and the other voltage is used for supplying power for the current maintenance of the multi-way electromagnetic valve.
3. The multi-way solenoid valve driving system redundancy technology of claim 1, wherein the current detection module comprises a high-precision sampling resistor and a current detection chip, the high-precision sampling resistor is connected in series with the multi-way solenoid valve and converts a current signal into a voltage signal to output to the current detection chip, and an output of the current detection chip is connected to an input end of an analog-to-digital conversion. The current detection chip controls the detection value of the current within the input voltage range of the analog-to-digital conversion module by properly amplifying or reducing the voltage signals at two ends of the high-precision sampling resistor.
4. The multi-channel solenoid valve driving system redundancy technology of claim 1, wherein an input of the analog-to-digital conversion module is connected with an output of the current detection module, an output of the analog-to-digital conversion module is connected with an input of the master controller and the slave controller, and the analog quantity output by the current detection module is converted into a digital quantity which can be processed by the master controller and the slave controller.
5. The multiple solenoid valve drive system redundancy technique of claim 1, wherein the controller comprises: the input of the controller (including the master controller and the slave controller) is connected with the output of the analog-to-digital conversion module, and the output of the controller is connected with the switching tube driving module and the isolation/switching module. The controller is connected with the switch tube driving module for the following purposes: the controller controls the on-off of the switch tube according to the input of the analog-to-digital conversion module, and the purpose that the controller is connected with the isolation/switching module is as follows: the controller controls the normal side operation or the redundant side operation according to the input of the analog-to-digital conversion module. The master controller is connected with the slave controller together, the two controllers can communicate to determine a control right, the master controller takes over the control right in normal time, a current waveform required by a multi-path electromagnetic valve and required by normal is generated, a watchdog signal is given to the slave controller at regular time, and the slave controller is in a hot backup state (initialization is completed); in case of failure, the master controller stops the watchdog signal to the slave controller and the slave controller wakes up from the hot backup state to take over the control right to take charge of the normal work of the redundant side.
6. The multiple solenoid valve drive system redundancy technique of claim 1, wherein the solenoid valve drive system comprises: the electromagnetic valve redundancy driving system is responsible for driving the electromagnetic valve at the redundancy side after the fault; the input of the electromagnetic valve driving system is connected with the switch tube driving module, the output of the electromagnetic valve driving system is connected with the electromagnetic valve, and the on and off of the switch tube control the electrification and the discharge of the electromagnetic valve, so that the required electromagnetic valve current waveform is generated.
7. The multiple solenoid valve drive system redundancy technique of claim 1, wherein the isolation/switching module has an input coupled to the controller and an output coupled to the solenoid valve. Normally, the isolation/switching module at the normal side is in a non-isolation state, and the isolation/switching module at the redundant side is in an isolation state; when a fault occurs, the isolation/switching module at the fault occurrence side is in an isolation state, and the isolation/switching module at the redundant side is in a non-isolation state, so that fault isolation and switching of the fault occurrence side to the redundant side are realized when the fault occurs.
8. The multi-way solenoid valve driving system redundancy technology of claim 1, wherein the multi-way solenoid valve refers to a plurality of on-off solenoid valves, which have only two states of complete on and complete off, and no intermediate state; the electromagnetic valve is connected in series with a switch tube in the electromagnetic valve driving system, and the on and off of the electromagnetic valve are realized by controlling the on and off of the switch tube.
9. The multi-way solenoid valve of claim 8, wherein the specific solenoid valve needs to be operated, and only the controller needs to provide a selection enable signal for driving the solenoid valve; and similarly, the solenoid valve does not need to work, and only a selective disabling signal is needed to be sent to the solenoid valve by the controller.
10. The multi-channel solenoid valve driving system redundancy technology of claim 1, wherein the controller is responsible for outputting control signals and disabling or enabling signals of the isolation/switching module in the solenoid valve driving system, and the analog-to-digital conversion module is responsible for converting current signals of the current detection module into digital signals and inputting the digital signals into the controller, and the technology is as follows:
(1) in normal time: firstly, the controller selects enabling signals for the solenoid valves needing to work, then the current waveform needed by the solenoid valves is used as a reference, and the controller compares the reference signal at each moment with the current actually passing through the solenoid valves; if the difference value between the actual value and the reference value exceeds a threshold value, the controller drives a disabling signal to the electromagnetic valve, and the power supply of the electromagnetic valve is closed to reduce the current of the electromagnetic valve to a required range; similarly, when the difference value between the reference value and the actual value exceeds a threshold value, the controller drives an enabling signal to the electromagnetic valve, and the power supply of the electromagnetic valve is switched on to enable the current of the electromagnetic valve to rise to a required range;
(2) when in failure: and when the difference value between the actual value of the current of the electromagnetic valve and the reference value exceeds the current threshold value in normal operation, judging that the fault occurs. The main concern after the fault of the switching tube occurs is that the electromagnetic valve fault driving system is isolated and switched to a redundant side to continue working; for the isolation of the electromagnetic valve fault driving system, only one isolation enabling signal is needed to be sent to an isolation/switching module at the fault generating side by the controller; for the situation that the electromagnetic valve fault driving system is switched to the redundant side to continue working, only one isolation disabling signal is needed to be sent to the isolation/switching module of the redundant side by the controller. The order for isolation and switching is: isolation first and switching later.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010222863.9A CN111399368A (en) | 2020-03-26 | 2020-03-26 | Redundancy technology of multi-path electromagnetic valve driving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010222863.9A CN111399368A (en) | 2020-03-26 | 2020-03-26 | Redundancy technology of multi-path electromagnetic valve driving system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111399368A true CN111399368A (en) | 2020-07-10 |
Family
ID=71432940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010222863.9A Pending CN111399368A (en) | 2020-03-26 | 2020-03-26 | Redundancy technology of multi-path electromagnetic valve driving system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111399368A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112202323A (en) * | 2020-08-25 | 2021-01-08 | 中国南方电网有限责任公司超高压输电公司广州局 | Redundancy improving method for flexible direct current valve control protection system |
| CN113189421A (en) * | 2021-04-21 | 2021-07-30 | 郑州海为电子科技有限公司 | Electromagnetic valve detection device and detection method based on electromagnetic drive validity detection |
| CN113339281A (en) * | 2021-06-24 | 2021-09-03 | 中国原子能科学研究院 | Nuclear power supply electromagnetic pump parallel drive controller |
| CN114253384A (en) * | 2021-12-21 | 2022-03-29 | 中科国微科技(深圳)有限公司 | Monolithic isolation voltage-stabilized source |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975300A (en) * | 2010-09-27 | 2011-02-16 | 苏明 | Method and device for controlling high-speed electromagnetic switch valve to adapt to pressure change at oil supply port |
| EP2916182A1 (en) * | 2014-01-15 | 2015-09-09 | FESTO AG & Co. KG | Safety control module and control device for a fluid driven processing machine |
| CN105569859A (en) * | 2015-12-14 | 2016-05-11 | 中国北方发动机研究所(天津) | High-speed electromagnetic valve drive method with boosting and fault diagnosing functions and circuit |
| CN106444514A (en) * | 2016-10-21 | 2017-02-22 | 中国运载火箭技术研究院 | High-reliability dual-redundancy power controller based on logic frame interaction |
| CN109185537A (en) * | 2018-10-24 | 2019-01-11 | 安徽锐视光电技术有限公司 | A kind of high-speed electromagnetic valve driving protection system |
-
2020
- 2020-03-26 CN CN202010222863.9A patent/CN111399368A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975300A (en) * | 2010-09-27 | 2011-02-16 | 苏明 | Method and device for controlling high-speed electromagnetic switch valve to adapt to pressure change at oil supply port |
| EP2916182A1 (en) * | 2014-01-15 | 2015-09-09 | FESTO AG & Co. KG | Safety control module and control device for a fluid driven processing machine |
| CN105569859A (en) * | 2015-12-14 | 2016-05-11 | 中国北方发动机研究所(天津) | High-speed electromagnetic valve drive method with boosting and fault diagnosing functions and circuit |
| CN106444514A (en) * | 2016-10-21 | 2017-02-22 | 中国运载火箭技术研究院 | High-reliability dual-redundancy power controller based on logic frame interaction |
| CN109185537A (en) * | 2018-10-24 | 2019-01-11 | 安徽锐视光电技术有限公司 | A kind of high-speed electromagnetic valve driving protection system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112202323A (en) * | 2020-08-25 | 2021-01-08 | 中国南方电网有限责任公司超高压输电公司广州局 | Redundancy improving method for flexible direct current valve control protection system |
| CN113189421A (en) * | 2021-04-21 | 2021-07-30 | 郑州海为电子科技有限公司 | Electromagnetic valve detection device and detection method based on electromagnetic drive validity detection |
| CN113339281A (en) * | 2021-06-24 | 2021-09-03 | 中国原子能科学研究院 | Nuclear power supply electromagnetic pump parallel drive controller |
| CN113339281B (en) * | 2021-06-24 | 2022-07-01 | 中国原子能科学研究院 | Nuclear power supply electromagnetic pump parallel drive controller |
| CN114253384A (en) * | 2021-12-21 | 2022-03-29 | 中科国微科技(深圳)有限公司 | Monolithic isolation voltage-stabilized source |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111399368A (en) | Redundancy technology of multi-path electromagnetic valve driving system | |
| CN103647300B (en) | Extra-high voltage direct-current transmission engineering inverter puts into and withdrawal control method online | |
| CN105024452B (en) | DC uninterrupted power supply method and line | |
| CN102548100B (en) | Load driving device and system | |
| CN100437408C (en) | Flow control system and control method in mixed mode of pulse code modulation and pulse width modulation | |
| KR102293764B1 (en) | Power supply system | |
| CN110336462B (en) | Direct-current power electronic transformer and control method and device thereof | |
| CN101645610A (en) | Device for equalizing charge of battery and method thereof | |
| CN111245039B (en) | Power supply system | |
| CN103797714A (en) | Gate control circuit, power module and associated method | |
| US20200177018A1 (en) | Power supply system | |
| CN109119981B (en) | Direct-current fault current limiting device and system and current limiting control method thereof | |
| CN104597750A (en) | Core relay fault detection and redundancy control system and control method | |
| CN110620405A (en) | Matrix type power distribution system in multi-power supply mode and control method | |
| CN101562353B (en) | On-line mutual switching control device of fundamental frequency power supply and variable frequency power supply | |
| CN109831159A (en) | A kind of method for diagnosing faults of sequence switch parallel regulator | |
| CN110797965B (en) | Electricity conversion structure and method | |
| JP2603043B2 (en) | Fuel cell power plant and its operation control method | |
| CN106533376B (en) | Switching power amplifier for modular series electromagnetic bearings | |
| CN115395781A (en) | Fault-tolerant control system of spacecraft power converter | |
| CN104701973B (en) | The control method of parallel connection power supply conversion equipment and parallel connection power supply conversion equipment | |
| CN110957781B (en) | Non-communication floating charge control method for two-stage series photovoltaic power optimizer system | |
| CN109247034B (en) | Power conversion system for system interconnection | |
| CN206135698U (en) | A switching power amplifier that electromagnetic bearing usefulness that is used for modularization to establish ties | |
| CN209389688U (en) | Short-circuit protection and converting means |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200710 |