CN214091953U - Split cascade controller - Google Patents
Split cascade controller Download PDFInfo
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- CN214091953U CN214091953U CN202120124078.XU CN202120124078U CN214091953U CN 214091953 U CN214091953 U CN 214091953U CN 202120124078 U CN202120124078 U CN 202120124078U CN 214091953 U CN214091953 U CN 214091953U
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Abstract
The utility model relates to a cascade controller belongs to the colliery safety control field. The system comprises: the intelligent alarm system comprises an MCU (microprogrammed control Unit) driving circuit, a level input circuit, an isolation optocoupler input circuit, an RTC (real time clock) clock chip, a self-detection circuit, an alarm driving circuit, a display circuit, an inner/outer CAN (controller area network) bus, an RS485 circuit, an external power supply circuit and an emergency starting button; and the MCU analyzes the input signal and outputs a control action signal to realize the linkage control of the explosion-proof device/the explosion suppressor. The utility model can simultaneously control another or a plurality of same controllers to start more sets of flame-proof devices with more ranges through the micro control unit, thereby realizing the graded linkage control, greatly improving the explosion-proof efficiency and reducing the incidence rate of coal mine explosion accidents; the emergency starting function is provided.
Description
Technical Field
The utility model belongs to the coal mine safety control field relates to a cascade controller.
Background
In China, a plurality of coal mines are in China and are seriously threatened by gas and coal dust explosion, and in recent years, a plurality of gas and dust explosion accidents occur mainly because of the lack of reliable explosion suppression technology and equipment.
At present, a protection device for gas and coal dust explosion in a coal mine is mainly an explosion-proof water bag, the principle of the protection device is that water bags filled with water are overturned by explosion overpressure to form water mist to inhibit explosion, and the protection device belongs to a passive explosion suppression technology. In addition, some enterprises have developed automatic explosion suppression devices used in coal mines, but the automatic explosion suppression devices are not applied in large quantity at present, operate independently and cannot perform hierarchical linkage control.
Therefore, a need exists for a controller that can control an explosion suppression device in a coordinated manner.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a cascade controller, according to the explosive strength and the scope that the explosion takes place, hierarchical linkage, the type and the quantity that need start to separate explosion suppression equipment are judged fast, accomplish joint defense joint control, high-efficient reliable control explosion scale. Meanwhile, the input explosion information can be rapidly analyzed and judged, the explosion intensity and the explosion range are determined, the positions and the number of explosion suppression units needing to be started are further determined, the explosion-proof efficiency is improved, and the occurrence rate of coal mine explosion accidents is reduced.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a split-level cascade controller comprising: the device comprises a Micro Control Unit (MCU), and a driving circuit, a level input circuit, an isolation optocoupler input circuit, an RTC clock chip, a self-detection circuit, an alarm driving circuit and a display circuit which are respectively connected with the MCU;
the micro control unit is used for analyzing and judging the input signal and outputting a control action signal;
the drive circuit is used for outputting a control action signal to the explosion suppressor/explosion suppressor;
the level input circuit is used for accessing explosion flame information and transmitting the explosion flame information to the micro control unit through conversion;
the isolation optocoupler input circuit is used for accessing explosion shock wave information;
the RTC clock chip provides time for the controller and is set through an external CAN bus;
the self-detection circuit detects input, output and other parts of the controller under the instruction of the micro-control unit and displays the state through the indicator lamp;
the sound-light alarm driving circuit is used for driving an external sound-light alarm;
the display circuit is used for carrying out liquid crystal display on the working state of the controller.
Further, the controller also comprises an inner/outer CAN bus, 2 paths of RS485 circuits and an external power supply circuit;
the inner/outer CAN bus is used by the cooperation of a local area network communication line and an RS485 circuit to realize the communication with the outside or the control function of the setting of the outside to the control;
the external power supply circuit is used for accessing an external power supply and supplying power for the normal work of the controller;
furthermore, an EEPROM is arranged in the micro control unit, the maximum memory capacity CAN reach 2000 groups of data, and reading and deleting are carried out through an external CAN bus.
Further, the driving circuit adopts a 4-path driving circuit.
Further, the level input circuit adopts a 2-path 0-5V level input circuit.
Further, the level input circuit is connected with the flame detector and transmits the detected explosion flame information to the micro control unit.
Furthermore, the isolation optocoupler input circuit adopts a 2-way isolation optocoupler input circuit.
Furthermore, the isolation optocoupler input circuit is connected with the shock wave detector and transmits the detected shock wave pressure value to the micro control unit.
Further, the alarm driving circuit adopts an audible and visual alarm driving circuit.
Further, the controller also includes an emergency start button.
The beneficial effects of the utility model reside in that: the utility model discloses divide cascade controller can control another one or many the same controllers simultaneously through little the control unit and start more groups of numbers, the flame proof ware of more ranges, realize hierarchical coordinated control, improved explosion-proof efficiency greatly, reduce the incidence of colliery explosion accident; the emergency starting function is provided.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.
Drawings
For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is the overall structure diagram of the cascade controller of the present invention;
FIG. 2 is a flow chart of the present invention;
FIG. 3 is a schematic diagram of the display screen displaying contents and arrangement thereof;
FIG. 4 is a schematic view of a secondary parameter configuration interface.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
Referring to fig. 1 to 4, the cascade controller of the present invention mainly comprises an intrinsically safe and flameproof housing, an internal electrical part, a liquid crystal display and indication, an explosion-proof interface, a switch and an emergency start button.
The controller shell uses a flameproof shell, so that sparks generated inside the controller cannot ignite an explosion environment formed by one or more external gases or steam through any joint surfaces or holes on the shell. The electrical part is the core and key of the controller, on which all performance is achieved. The liquid crystal display and indication are used for displaying and indicating various working states of the controller. The explosion-proof interface is used for inputting external explosion flame and shock wave pressure information, inputting a power supply, controlling output and connecting other communication. The switch button is used for switching on and off the controller, and the emergency starting button is a manual emergency control function of the controller and starts acousto-optic alarm.
The controller electric part is integrated into a circuit board, fixed in the shell in a thread mode, connected with each interface and the display part through lines, the explosion-proof interface is welded on the shell, and the display part and the button are installed on the surface of the shell. The explosion-proof interface adopts the explosion-proof bellmouth connected mode of A0, 10 groups A0 explosion-proof bellmouths in total. The indicating lamp selects a DC12V BD8050 explosion-proof indicating lamp, the emergency button selects a BA8050 explosion-proof self-reset button (matched with a BA8050 transparent protective cover), and the power switch selects a BA8050 explosion-proof second-gear change-over switch (with the capacity of 10A).
The core electrical part of the controller is connected as shown in figure 1 and mainly comprises a Micro Control Unit (MCU), 4 drive circuits, 2 0-5V level input circuits, 2 isolation optocoupler input circuits, an RTC clock chip, a self-detection circuit, an acousto-optic alarm drive circuit, a display circuit, an internal and external CAN bus, 2 RS485 circuits, an external power supply circuit and the like; the other parts are all connected with the MCU.
The MCU is the brain of the electrical part and is used for analyzing, judging, calculating and controlling other parts of the circuit; LPC1768FBD100 chip with RTC can be used.
The 4-path driving circuit outputs a control action signal to the explosion suppressor/explosion suppressor; a 2N2222& SUD50P06-15L chip may be used.
And the 2-path 0-5V level input circuit (compatible with 5V level input) is used for accessing explosion flame information and transmitting the explosion flame information to the MCU through conversion.
The 2-path isolation optocoupler input circuit is used for accessing explosion shock wave information; HCPL-063L-500E chips can be used.
The RTC clock chip provides reliable time for the controller and CAN be set through an external CAN bus; an AT24C256& CR1632 chip may be employed.
The self-detection circuit detects input, output and other parts of the controller under the instruction of the MCU, and displays the state through the indicator lamp.
The audible and visual alarm driving circuit is used for driving an external audible and visual alarm.
The display circuit is used for carrying out liquid crystal display on the working state of the controller; a 16-way led driver circuit may be used.
The inner/outer CAN bus is used by the cooperation of a local area network communication line and an RS485 circuit to realize the communication with the outside or the control function of the setting of the outside to the control; the inner and outer CAN buses include: B0305S-1W, ADUM1201, MAX3050ASA and the like.
The external power supply circuit is used for being connected with an external power supply and supplying power for normal work of the controller. The external power circuit can select VRB1203YMD-6WR2+ power down monitoring + compatible AC 220.
The MCU is internally provided with an EEPROM, the maximum memory capacity CAN reach 2000 groups of data, and the data CAN be read and deleted through an external CAN bus.
The hierarchical control method of the hierarchical cascade controller in the embodiment comprises the following steps:
(1) the flame detector 1 detects a fire source and outputs a signal 1 to the controller; the controller outputs a signal 1 to the explosion suppressor; and spraying explosion suppression medium on the explosion suppressor, and stopping the equipment if the explosion suppression is successful. If explosion suppression is not successful, the flame detector 2 detects a fire source and outputs a signal 2 to the controller; the controller outputs a signal 2 to the first group of flame-proof devices, and the first group of flame-proof devices spray explosion suppression media; (this function can be used as a backup)
(2) The shock wave detector detects a pressure value P1, a signal 3 is output to the controller, and the number of groups for starting the explosion-proof device is determined through intelligent judgment of the controller; the controller outputs a signal 3 to the explosion-proof devices, and a group of explosion-proof devices are started simultaneously; the shock wave detector detects a pressure value P2 (usually P2> P1), the one group and the two groups of flame-proof devices are started simultaneously, the pressure value P3 can be detected at most, and the four groups of flame-proof devices are controlled simultaneously. (typically only one shockwave detector is used to perform the above function, and the input port of the other shockwave detector can be expanded for later use).
As shown in fig. 2, the execution flow of the cascade controller in this embodiment is as follows:
when the controller is powered on, the configuration information (such as the number of detectors, the number of shock wave sensors and a pressure setting value) of the system is firstly read, and the configuration information is used as an initialization parameter for starting at this time. After power is on, the system carries out self-checking and lamp checking (self-checking, detecting the state of each component, lamp checking, all indicator lamps except a power lamp flicker, and a user can find out a fault of a certain indicator lamp conveniently), and then the state of the connected components is displayed.
During normal operation, the controller judges the state of the detector by detecting the state of a detector relay, and starts the explosion suppressor or the explosion suppressor when the detector gives an alarm; and similarly, the alarm of the shock wave sensor is processed in AD, and when the set pressure value is met, the corresponding explosion-proof device is started according to logic (starting logic: T1 alarm starting P1; T2 alarm starting P2; pressure alarm value 1 grade starting P2; pressure alarm value 2 grade starting P2, P3; pressure alarm value 3 grade starting P1, P2, P3 and P4). The controller detects the states of all the components in real time during operation, if the states of the components change (faults, alarms and the like), the detected state information of the components is reported to the upper computer through the CAN bus, and meanwhile, the states are displayed on the panel according to corresponding indicator lamps and display screens, and the event is recorded. If the state of the component does not change, detecting whether a remote control instruction exists, if so, carrying out corresponding operation display according to preset logic, and not influencing the alarm and fault judgment of the detector/shock wave sensor and the explosion suppression and explosion suppression starting of the controller in the remote control operation display process.
In the detector/shock wave sensor state determination, a fault is prioritized. When a fault condition exists, the controller does not respond to the alarm information of the corresponding detector/shock wave sensor.
As shown in fig. 3, the display screen displays the content and the arrangement manner:
the first row displays the running time of the current controller and the serial number of the controller;
the second line displays the states of the detectors 1 and 2, including alarm, fault and normal;
the third and fourth lines display the states of the shock wave detectors 1 and 2, including alarm, normal and fault; wherein the pressure value of the shock wave is displayed as a selectable item (related to the function of the shock wave detector), and when the pressure value cannot be acquired, the pressure value is displayed as empty;
the explosion suppressor and the explosion suppressor are classified into a class of devices, and therefore the numbers corresponding to the fire extinguishing devices are arranged in the following sequence:
The fifth row displays the explosion suppressor 1 (the explosion suppressor is in an electric explosion type), and displays the state of a pressure feedback point and the state of a connected electric explosion tube, wherein the state comprises normal, fault, abnormal and disconnected;
the sixth line displays an explosion isolator 2 (the explosion isolator is in an electric explosion type), and displays the states of the pressure feedback points and the connected electric explosion tubes, wherein the states comprise normal, fault, abnormal and disconnected states;
the seventh line displays an explosion isolator 3 (the explosion isolator is in an electric explosion type), and displays the states of the pressure feedback points and the connected electric explosion tubes, wherein the states comprise normal, fault, abnormal and disconnected states;
the eighth line displays an explosion isolator 4 (the explosion isolator is of an electric explosion type), and displays the states of the pressure feedback points and the connected electric explosion tubes, wherein the states comprise normal, fault, abnormal and disconnected states;
as shown in fig. 4, in the secondary parameter configuration interface, a corresponding change position is selected by a remote control selection key in the parameter configuration interface, and a parameter value is changed by pressing a confirmation key;
the time can be set for year, month, day, hour, minute and second, and the time is 24 hours;
the address is the ID value of the local machine;
p1, P2 and P3 are alarm values set by the shock wave sensor;
the probes are configured to configure the number of connections of the probes;
the sensors are configured to configure the number of connections of the shockwave sensor.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.
Claims (10)
1. A cascade controller, comprising: the device comprises a micro control unit, a driving circuit, a level input circuit, an isolation optocoupler input circuit, an RTC clock chip, a self-detection circuit, an alarm driving circuit and a display circuit, wherein the driving circuit, the level input circuit, the isolation optocoupler input circuit, the RTC clock chip, the self-detection circuit, the alarm driving circuit and the display circuit are respectively connected with the micro control unit;
the micro control unit is used for analyzing and judging the input signal and outputting a control action signal;
the drive circuit is used for outputting a control action signal to the explosion suppressor/explosion suppressor;
the level input circuit is used for accessing explosion flame information and transmitting the explosion flame information to the micro control unit through conversion;
the isolation optocoupler input circuit is used for accessing explosion shock wave information;
the RTC clock chip provides time for the controller and is set through an external CAN bus;
the self-detection circuit detects input and output parts of the controller under the instruction of the micro-control unit and displays the state through the indicator lamp;
the alarm driving circuit is used for driving an external alarm;
the display circuit is used for displaying the working state of the controller.
2. The cascade controller of claim 1, wherein the system further comprises an inside/outside CAN bus, an RS485 circuit, and an external power supply circuit;
the inner/outer CAN bus is used by the cooperation of a local area network communication line and an RS485 circuit to realize the communication with the outside or the control function of the setting of the outside to the control;
the external power supply circuit is used for being connected with an external power supply and supplying power for normal work of the controller.
3. The cascade controller according to claim 1 or 2, wherein an EEPROM is provided inside the micro control unit, and reading and deleting are performed through an external CAN bus.
4. The cascade controller of claim 1, wherein the drive circuit is a 4-way drive circuit.
5. The cascade controller of claim 1, wherein the level input circuit employs a 2-way 0-5V level input circuit.
6. The cascade controller of claim 1 or 4, wherein the level input circuit is connected to a flame detector for communicating information about the detected explosion flame to the micro-control unit.
7. The cascade controller of claim 1, wherein the isolated optocoupler input circuit is a 2-way isolated optocoupler input circuit.
8. The cascade controller according to claim 1 or 7, wherein the isolating optocoupler input circuit is connected to a shock wave detector for communicating the detected shock wave pressure value to the micro control unit.
9. The cascade controller of claim 1, wherein the alarm driver circuit is an acousto-optic alarm driver circuit.
10. The cascade controller of claim 1, further comprising an emergency start button.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120124078.XU CN214091953U (en) | 2021-01-15 | 2021-01-15 | Split cascade controller |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120124078.XU CN214091953U (en) | 2021-01-15 | 2021-01-15 | Split cascade controller |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114849108A (en) * | 2022-07-06 | 2022-08-05 | 四川坤弘远祥科技有限公司 | Control system of non-pressure storage type explosion suppression system |
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2021
- 2021-01-15 CN CN202120124078.XU patent/CN214091953U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114849108A (en) * | 2022-07-06 | 2022-08-05 | 四川坤弘远祥科技有限公司 | Control system of non-pressure storage type explosion suppression system |
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