CN206907122U - Gate control device and system based on RS485 communication protocols - Google Patents
Gate control device and system based on RS485 communication protocols Download PDFInfo
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- CN206907122U CN206907122U CN201720822777.5U CN201720822777U CN206907122U CN 206907122 U CN206907122 U CN 206907122U CN 201720822777 U CN201720822777 U CN 201720822777U CN 206907122 U CN206907122 U CN 206907122U
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Abstract
The utility model provides gate control device and system based on RS485 communication protocols, is related to access control technical field, including master control borad, servo-driver, encoder, servomotor and gate；The control signal that state monitoring apparatus generates is sent to servo-driver, encoder and detects the position of gate, so as to obtain positional information, go out velocity information according to positional information calculation by master control borad；Servo-driver is controlled according to control signal to servomotor, and the three-phase current of detection output, and three-phase current, positional information and velocity information are compared with presupposed information, obtains comparison result；Servomotor is operated according to the control signal of comparison result and servo-driver, and drives gate to perform corresponding actions, is controlled using RS485 communication protocols, it is simple in networking control, it is easy on the basis of extension, is controlled according to the running status of gate, realizes the purpose of synchronism stability operation.
Description
Technical Field
The utility model belongs to the technical field of the access control technique and specifically relates to a floodgate machine controlling means and system based on RS485 communication protocol are related to.
Background
With the vigorous development of high technology, intelligent management has entered into people's social life, and the demand of the information era is adapted, and as an advanced high-tech technical precaution and management means, the intelligent channel system has been widely applied to places such as schools, dining halls, hotels, restaurants, clubs, subways, stations, docks, and communities in some economically developed countries and regions. The intelligent channel swing gate is based on industrial automatic control, and takes a computer network as a bridge, so that the comprehensive management which is safer, more reliable, more efficient and more economic is provided for users;
at present, the general networking degree of difficulty of traditional passageway floodgate machine is great, and the operation is asynchronous, has the pedestrian of easy accidental injury, poor stability's problem.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a floodgate machine controlling means and system based on RS485 communication protocol adopts RS485 communication protocol control, and is simple at network deployment control, on the basis of the extension of being convenient for, controls according to the running state of floodgate machine, realizes the purpose of synchronous steady operation.
In a first aspect, an embodiment of the present invention provides a gate control device based on an RS485 communication protocol, including a main control board, a servo driver, an encoder, a servo motor, and a gate, where the gate includes a state monitoring device and a gate;
the master control board is respectively connected with the gate and the servo driver and is used for sending the control signal generated by the state monitoring device to the servo driver;
the encoder is respectively connected with the servo driver and the servo motor and used for detecting the position of the gate so as to obtain position information, calculating speed information according to the position information and sending the position information and the speed information to the servo driver;
the servo driver is connected with the servo motor and used for controlling the servo motor according to the control signal, detecting the output three-phase current and comparing the three-phase current, the position information and the speed information with preset information to obtain a comparison result;
and the servo motor is connected with the gate and used for working according to the comparison result and the control signal of the servo driver and driving the gate to execute corresponding actions.
In combination with the first aspect, an embodiment of the present invention provides a first possible implementation manner of the first aspect, wherein the gate machine further includes a peripheral device, the main control board is further configured to execute the gate under the condition of the corresponding action, control the peripheral device to work, wherein the peripheral device includes one or more of a buzzer, light and a LED, and the state monitoring device includes one or more of a fire alarm sensor, an infrared sensor and a light curtain.
With reference to the first aspect, embodiments of the present invention provide a second possible implementation manner of the first aspect, where the servo driver includes a current sensor and a controller, where the current sensor and the controller are disposed inside the servo driver;
the current sensor is connected with the servo motor and is used for detecting the three-phase current output by the servo driver;
the controller is connected with the servo motor and used for controlling the servo motor according to the control signal and comparing the three-phase current, the position information and the speed information with preset information respectively to obtain a comparison result, wherein the preset information comprises one or more of preset speed information, preset protection position information and preset protection current.
With reference to the first aspect, an embodiment of the present invention provides a third possible implementation manner of the first aspect, wherein the controller is further configured to control the servo motor to accelerate under the condition that the speed information is smaller than the preset speed information;
or,
and the servo motor is also used for controlling the servo motor to decelerate under the condition that the speed information is greater than the preset speed information.
In combination with the first aspect, an embodiment of the present invention provides a fourth possible implementation manner of the first aspect, wherein the fourth possible implementation manner further includes a speed reducer, which is disposed on the servo motor, and is used for increasing the torque, so that the rotation speed of the gate is reduced.
In combination with the first aspect, an embodiment of the present invention provides a fifth possible implementation manner of the first aspect, wherein the gate machine further includes a clutch connected to the controller for locking the gate.
With reference to the first aspect, an embodiment of the present invention provides a sixth possible implementation manner of the first aspect, wherein the controller is further configured to control the clutch to lock the gate when the position information exceeds the preset protection position information;
or,
and the control circuit is also used for controlling the clutch to lock the gate under the condition that the three-phase current is greater than the preset protection current.
In combination with the first aspect, an embodiment of the present invention provides a seventh possible implementation manner of the first aspect, wherein the main control board further sends the control signal to the servo driver through an RS485 communication protocol, and acquires a state of the servo driver.
In combination with the first aspect, an embodiment of the present invention provides an eighth possible implementation manner of the first aspect, where the servo driver includes a first servo driver and a second servo driver, the servo motor includes a first servo motor and a second servo motor, the control signal further includes a first control signal and a second control signal, and the gate includes a left gate and a right gate;
the first servo driver is used for acquiring the first control signal and controlling the first servo motor according to the first control signal so that the first servo motor drives the left gate to perform corresponding action;
and the second servo driver is used for acquiring the second control signal and controlling the second servo motor according to the second control signal so as to enable the second servo motor to drive the right gate to perform corresponding action.
In a second aspect, the embodiment of the present invention further provides a gate control system based on RS485 communication protocol, including the gate control device based on RS485 communication protocol as described above, further including an identification device and an industrial personal computer connected to the gate control device based on RS485 communication protocol;
the identification device is connected with the industrial personal computer and used for identifying a main control signal and sending the main control signal to the industrial personal computer, so that the industrial personal computer sends the main control signal to the main control board of the gate control device through an RS232 communication protocol.
The embodiment of the utility model provides a floodgate machine controlling means and system based on RS485 communication protocol, including main control board, servo driver, encoder, servo motor and floodgate machine; the main control board sends a control signal generated by the state monitoring device to the servo driver, the encoder detects the position of the gate so as to obtain position information, and speed information is calculated according to the position information; the servo driver controls the servo motor according to the control signal, detects the output three-phase current, and compares the three-phase current, the position information and the speed information with preset information to obtain a comparison result; the servo motor works according to the comparison result and the control signal of the servo driver, drives the gate to execute corresponding action, adopts RS485 communication protocol for control, and controls according to the running state of the gate on the basis of simple networking control and convenient expansion, thereby realizing the purpose of synchronous and stable running.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a gate control device based on an RS485 communication protocol according to an embodiment of the present invention;
fig. 2 is one of schematic structural diagrams of a gate control system based on an RS485 communication protocol according to an embodiment of the present invention;
fig. 3 is a second schematic structural diagram of a gate control system based on RS485 communication protocol according to an embodiment of the present invention;
fig. 4 is the embodiment of the present invention provides a scene application diagram of a gate control system based on RS485 communication protocol.
Icon: 10-a main control board; 20-a servo driver; 30-an encoder; 40-a gate; 50-a servo motor; 60-identification means; 70-a server; 80-an industrial personal computer; 100-a gate control device based on RS485 communication protocol; 21-a first servo driver; 22-a second servo driver; 51-a first servo motor; 52-second servomotor.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
At present, the general networking degree of difficulty of traditional passageway floodgate machine is great, and the operation is asynchronous, has the pedestrian of easy accidental injury, poor stability's problem.
Based on this, the embodiment of the utility model provides a floodgate machine controlling means and system based on RS485 communication protocol adopts RS485 communication protocol control, and is simple at network deployment control, and on the basis of the extension of being convenient for, control according to the running state of floodgate machine, realize synchronous steady operation's purpose.
For the convenience of understanding the present embodiment, the gate control device based on RS485 communication protocol disclosed in the embodiments of the present invention is first described in detail.
Fig. 1 is the embodiment of the utility model provides a floodgate machine controlling means structure sketch map based on RS485 communication protocol.
Referring to fig. 1, the gate control device based on the RS485 communication protocol includes a main control board 10, a servo driver 20, an encoder 30, a servo motor 50, and a gate 40, wherein the gate 40 includes a state monitoring device and a gate;
a main control board 10 connected to the gate 40 and the servo driver 20, respectively, for transmitting the control signal generated by the state monitoring device to the servo driver 20,
an encoder 30 connected to the servo driver 20 and the servo motor 50, respectively, for detecting a position of the gate to obtain position information, calculating speed information according to the position information, and transmitting the position information and the speed information to the servo driver 20;
the servo driver 20 is connected with the servo motor 50 and used for controlling the servo motor 50 according to the control signal, detecting the output three-phase current and comparing the three-phase current, the position information and the speed information with preset information to obtain a comparison result;
and the servo motor 50 is connected with the gate 40 and is used for working according to the comparison result and the control signal of the servo driver 20 and driving the gate to execute corresponding action.
Here, based on the RS485 bus type high-performance servo drive control mechanism, the Internet network technology is embedded, and the problems that the running efficiency of the gate 40 is low, the running process is not stable, two side doors are not synchronous, the gate shakes and overshoots after being in place, the maintenance is difficult, and the networking difficulty is large are solved.
Further, the gate 40 further includes a peripheral device, and the main control board 10 is further configured to control the peripheral device to operate under the condition that the gate executes a corresponding action, where the peripheral device includes one or more of a buzzer, a light, and an LED, and the state monitoring device includes one or more of a fire sensor, an infrared sensor, and a light curtain.
Here, the main control board 10 outputs light, buzzer sound and LED information in real time according to the traffic state in the gate 40;
for example, when the state monitoring device in the gate 40 senses a fire alarm abnormality through the fire alarm sensor, the main control board 10 controls the peripheral device buzzer to emit a corresponding buzzing sound, and displays corresponding LED information and a light flashing state; when a user normally passes through the gate, displaying normal buzzing sound, LED information and a light flashing state;
the embodiment of the utility model provides a maintainability is good, and when the unusual appearance, main control board 10 reports to the police immediately and suggests to send information to floodgate machine control center through the internet, and main control board 10 can remote operation, also can remote upgrading procedure, and the maintenance is simple high-efficient;
further, the servo driver 20 includes a current sensor and a controller (not shown in the figure), wherein the current sensor and the controller are disposed inside the servo driver 20;
a current sensor connected to the servo motor 50 for detecting a three-phase current output from the servo driver 20;
and the controller is connected with the servo motor 50 and used for controlling the servo motor 50 according to the control signal and comparing the three-phase current, the position information and the speed information with preset information respectively to obtain a comparison result, wherein the preset information comprises one or more of the preset speed information, the preset protection position information and the preset protection current.
Further, the controller is further configured to control the servo motor 50 to accelerate under the condition that the speed information is less than the preset speed information;
or,
and is also used for controlling the servo motor 50 to decelerate under the condition that the speed information is greater than the preset speed information.
Here, the embodiment of the utility model has higher efficiency, different door opening and closing speeds can be set according to actual needs, and the door opening and closing time can reach 300ms as fast as possible;
further, the device further comprises a speed reducer which is arranged on the servo motor 50 and used for increasing the moment so as to reduce the rotating speed of the gate.
Further, the gate 40 further includes a clutch connected to the controller for locking the gate.
Further, the controller is also used for controlling the clutch locking gate under the condition that the position information exceeds the preset protection position information;
or,
and the control circuit is also used for controlling the clutch lock gate under the condition that the three-phase current is greater than the preset protection current.
Specifically, the driving mode of the servo motor 50 is full closed loop control, including position closed loop, speed closed loop and current closed loop; the high-stability encoder 30 is used as a position ring input unit, the position ring output unit is used as a speed ring input unit, and the position curve planning and sine and cosine acceleration and deceleration algorithms are matched to ensure that the position of the gate is accurately positioned in the operation process, the response is quick, and the gate does not have overshoot and shaking after being in place; the current closed loop adopts a Hall current sensor with high linearity, and a motor vector control algorithm with high efficiency is matched, so that the full silence, high efficiency and long service life of the motor in the running process are ensured.
Here, the embodiment of the utility model discloses the multiple anti-pinch protection function that prevents still includes, because adopt the position closed loop, the deviation of real position and target location is monitored in real time, when the deviation angle is greater than the position anti-pinch parameter that the user set for, when current position information surpassed preset protection position information, the system will trigger position anti-pinch protection function; due to the fact that the current closed loop is adopted, the deviation between the actual current and the preset protection current is monitored in real time, when the gate swing door is blocked, and the actual current is larger than the preset protection current, the current anti-pinch protection function is triggered. And the infrared protection function is added, so that the occurrence of the situation of accidentally injuring people is greatly reduced by the multiple protection functions.
Here, the embodiment of the utility model provides a motion stationarity is good, adopts the closed-loop control of total position, guarantees that the switch door position is synchronous, adopts sine and cosine acceleration and deceleration algorithm, and it is accurate to put in place, and there is not overshoot, no rock, no impact, and adopt multiple protection mode, such as infrared protection, overcurrent overvoltage protection, multiple protective measures such as position angle deviation protection, greatly reduced the emergence that the mistake hurt people's situation; the system is stable and reliable, and when a strong gate violation or violent impact occurs, the main control board 10 can give an alarm to prompt and recover itself, and records data;
further, the main control board 10 sends a control signal to the servo driver 20 through an RS485 communication protocol, and obtains the state of the servo driver 20.
Further, the servo driver 20 includes a first servo driver 21 and a second servo driver 22, the servo motor 50 includes a first servo motor 51 and a second servo motor 52, the control signals further include a first control signal and a second control signal, and the gate includes a left gate and a right gate;
the first servo driver 21 is configured to obtain a first control signal, and control the first servo motor 51 according to the first control signal, so that the first servo motor 51 drives the left gate to perform a corresponding action;
and the second servo driver 22 is configured to obtain a second control signal, and control the second servo motor 52 according to the second control signal, so that the second servo motor 52 drives the right shutter to perform a corresponding action.
As shown in fig. 3, the embodiment of the present invention further includes a 24V dc power supply for supplying power to each component in the gate control device, and a storage battery with strong endurance is provided, so that the system has the functions of automatic power-off switching-off and automatic power-on reset;
here, the embodiment of the present invention can also access the back-end management center with the TCP/IP protocol to perform networking communication.
The main control board 10 and the dual servo driver 20 are communicated based on a CAN bus, and exchange information and data in real time, the CAN bus is a high-performance and high-reliability field bus, supports distributed control and real-time control, ensures that the swing gate is kept synchronous and stable in the operation process, and CAN quickly respond to the change of an external state.
The embodiment of the utility model provides a floodgate machine controlling means based on RS485 communication protocol, including main control board, servo driver, encoder, servo motor and floodgate machine; the main control board sends a control signal generated by the state monitoring device to the servo driver, the encoder detects the position of the gate so as to obtain position information, and speed information is calculated according to the position information; the servo driver controls the servo motor according to the control signal, detects the output three-phase current, and compares the three-phase current, the position information and the speed information with preset information to obtain a comparison result; the servo motor works according to the comparison result and the control signal of the servo driver, drives the gate to execute corresponding action, adopts RS485 communication protocol for control, and controls according to the running state of the gate on the basis of simple networking control and convenient expansion, thereby realizing the purpose of synchronous and stable running.
Further, as shown in fig. 2 and fig. 4, an embodiment of the present invention further provides a gate control system based on RS485 communication protocol, including the gate control device 100 based on RS485 communication protocol, as described above, further including an identification device 60 and an industrial personal computer 80 connected to the gate control device 100 based on RS485 communication protocol;
and the recognition device 60 is connected with the industrial personal computer 80 and used for recognizing the main control signal and sending the main control signal to the industrial personal computer 80, so that the industrial personal computer 80 sends the main control signal to the main control board 10 of the gate control device through an RS232 communication protocol.
Specifically, the identification device 60 identifies a main control signal, the main control signal is sent to the industrial personal computer 80 through an RS232 communication protocol, the industrial personal computer 80 sends card swiping information to a gate management center through the Ethernet, namely the server 70 processes the card swiping information, a door opening action command of the main control board 10 is sent to the industrial personal computer 80, and the industrial personal computer 80 obtains the state of the main control board 10 in real time through the RS 232. The industrial personal computer 80 forwards a door opening action command of the gate to the main control board 10 in combination with the state of the main control board 10, and acquires the state (infrared, fire alarm and light curtain) of the gate 40 in real time; the main control board 10 forwards a door opening action command of the gate to the driver through an RS485 communication protocol, and obtains states of the first servo driver 21 and the second servo driver 22 in real time through the RS485 communication protocol, so that the first servo driver 21 and the second servo driver 22 respectively control the first servo motor 51 and the second servo motor 52 according to a rotation information command, and the motors run to specified positions according to a specified path planning curve.
Here, the recognition device 60 includes a card reader, a fingerprint recognition device, a palm vein recognition device, an iris recognition device, and the like;
the embodiment of the utility model has a unified and standard external electrical interface, and can be connected with various reading and writing devices, a PC and a remote control center;
in addition, the friendly human-computer interaction interface enables a user to operate simply and conveniently, is good in experience effect, and the system is provided with various control modes such as single-direction and two-direction free passing, single-direction and two-direction controlled passing, single-direction and two-direction no passing, peak period passing, time period control passing and the like, and can be set automatically through keys or communication commands according to needs without changing any mechanical structure.
The embodiment of the utility model provides a floodgate machine control system based on RS485 communication protocol, the floodgate machine controlling means based on RS485 communication protocol who provides with above-mentioned embodiment has the same technical characteristic, so also can solve the same technical problem, reach the same technological effect.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the system and the apparatus described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A gate control device based on an RS485 communication protocol is characterized by comprising a main control board, a servo driver, an encoder, a servo motor and a gate, wherein the gate comprises a state monitoring device and a gate;
the master control board is respectively connected with the gate and the servo driver and is used for sending the control signal generated by the state monitoring device to the servo driver;
the encoder is respectively connected with the servo driver and the servo motor and used for detecting the position of the gate so as to obtain position information, calculating speed information according to the position information and sending the position information and the speed information to the servo driver;
the servo driver is connected with the servo motor and used for controlling the servo motor according to the control signal, detecting the output three-phase current and comparing the three-phase current, the position information and the speed information with preset information to obtain a comparison result;
and the servo motor is connected with the gate and used for working according to the comparison result and the control signal of the servo driver and driving the gate to execute corresponding actions.
2. The gate control device based on the RS485 communication protocol according to claim 1, wherein the gate further comprises a peripheral device, the main control board is further configured to control the peripheral device to operate when the gate executes the corresponding action, the peripheral device comprises one or more of a buzzer, a light and an LED, and the state monitoring device comprises one or more of a fire sensor, an infrared sensor and a light curtain.
3. The RS485 communication protocol based gate control device according to claim 1, wherein the servo driver comprises a current sensor and a controller, wherein the current sensor and the controller are disposed inside the servo driver;
the current sensor is connected with the servo motor and is used for detecting the three-phase current output by the servo driver;
the controller is connected with the servo motor and used for controlling the servo motor according to the control signal and comparing the three-phase current, the position information and the speed information with preset information respectively to obtain a comparison result, wherein the preset information comprises one or more of preset speed information, preset protection position information and preset protection current.
4. The gate control device based on RS485 communication protocol according to claim 3,
the controller is further used for controlling the servo motor to accelerate under the condition that the speed information is smaller than the preset speed information;
or,
and the servo motor is also used for controlling the servo motor to decelerate under the condition that the speed information is greater than the preset speed information.
5. The gate machine control device based on the RS485 communication protocol according to claim 4, further comprising a speed reducer disposed on the servo motor for increasing torque to reduce the rotation speed of the gate.
6. The RS485 communication protocol based gate control device according to claim 3, wherein the gate further comprises a clutch connected to the controller for locking the gate.
7. The RS485 communication protocol based gate control device according to claim 6, wherein the controller is further configured to control the clutch to lock the gate if the position information exceeds the preset protection position information;
or,
and the control circuit is also used for controlling the clutch to lock the gate under the condition that the three-phase current is greater than the preset protection current.
8. The gate control device according to claim 1, wherein the main control board further sends the control signal to the servo driver via an RS485 communication protocol, and obtains the status of the servo driver.
9. The RS485 communication protocol based gate control device according to claim 1, wherein the servo driver comprises a first servo driver and a second servo driver, the servo motor comprises a first servo motor and a second servo motor, the control signal further comprises a first control signal and a second control signal, the gate comprises a left gate and a right gate;
the first servo driver is used for acquiring the first control signal and controlling the first servo motor according to the first control signal so that the first servo motor drives the left gate to perform corresponding action;
and the second servo driver is used for acquiring the second control signal and controlling the second servo motor according to the second control signal so as to enable the second servo motor to drive the right gate to perform corresponding action.
10. An RS485 communication protocol-based gate control system is characterized by comprising the RS485 communication protocol-based gate control device of any one of claims 1-9, an identification device and an industrial personal computer connected with the RS485 communication protocol-based gate control device;
the identification device is connected with the industrial personal computer and used for identifying a main control signal and sending the main control signal to the industrial personal computer, so that the industrial personal computer sends the main control signal to the main control board of the gate control device through an RS232 communication protocol.
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| CN201720822777.5U CN206907122U (en) | 2017-07-06 | 2017-07-06 | Gate control device and system based on RS485 communication protocols |
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| CN201720822777.5U CN206907122U (en) | 2017-07-06 | 2017-07-06 | Gate control device and system based on RS485 communication protocols |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107180471A (en) * | 2017-07-06 | 2017-09-19 | 深圳市嘉昱机电有限公司 | Gate control device and system based on RS485 communication protocols |
| CN112653355A (en) * | 2020-12-23 | 2021-04-13 | 盛视科技股份有限公司 | Electric door speed control method and system |
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2017
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107180471A (en) * | 2017-07-06 | 2017-09-19 | 深圳市嘉昱机电有限公司 | Gate control device and system based on RS485 communication protocols |
| CN112653355A (en) * | 2020-12-23 | 2021-04-13 | 盛视科技股份有限公司 | Electric door speed control method and system |
| CN112653355B (en) * | 2020-12-23 | 2023-12-26 | 盛视科技股份有限公司 | Electric door speed control method and system |
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