Platform door control system and method

Abstract

The invention discloses an embedded platform door control system and method. The control system comprises a signal input module, a logic module and a signal output module. The input end of the signal input module is connected with an external signal; the input end of the logic module is connected with the output end of the signal input module and the output end of the signal output module; the output end of the logic module is connected with the input end of the signal input module and the input end of the signal output module; the output end of the signal output module is connected with the platform door; the signal input module comprises two input channels which are redundant to each other; the signal output module comprises two output channels which are redundant to each other. Redundancy detection of external signals is realized through the signal input module. Redundant control over the platform door is achieved through the signal output module. The connection relation among the signal input module, the logic module and the signal output module forms closed-loop control, and redundancy detection and redundancy control are combined, so that the reliability of the system can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of platform screen doors, and particularly to an embedded-based platform screen door control system and method. Background Art

[0002] The platform screen door control system is the control center device of the platform screen door equipment. An independent platform screen door control system is set for each side of the platform screen door equipment, which can realize the hierarchical linkage platform screen door function required by the "Technical Specification for Urban Rail Transit Platform Screen Door System" (CJJ183) according to external SIG, PSL, and IBP signals, and at the same time monitor the status of the door unit and the power supply system.

[0003] At present, the input detection and output of external signals in the industry's platform screen door control system have no redundancy, and it is impossible to switch the logic control in time, which cannot meet the development requirements of autonomous driving in the industry; and currently, the platform screen door control systems in the industry are all open-loop controls, which cannot realize the automatic diagnosis and automatic switching of the system, and require on-site maintenance personnel to have rich experience and high skill levels.

[0004] Therefore, the existing platform screen door control system has no redundant channels and is an open-loop control, and cannot switch the logic control in time and cannot realize automatic diagnosis and automatic switching. Summary of the Invention

[0005] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide an embedded-based platform screen door control system and method, which are provided with redundant channels and are closed-loop controls, and can realize automatic diagnosis of logic control in time and realize automatic switching.

[0006] To solve the above problems, the present invention is implemented according to the following solutions:

[0007] An embedded-based platform screen door control system is provided, including: a signal input module, a logic module, and a signal output module;

[0008] The input end of the signal input module is connected to an external signal; the input end of the logic module is connected to the output end of the signal input module and the output end of the signal output module; the output end of the logic module is connected to the input end of the signal input module and the input end of the signal output module; the output end of the signal output module is connected to the platform screen door;

[0009] The signal input module includes two redundant input channels; the signal output module includes two redundant output channels.

[0010] Compared with the prior art, the beneficial effects of an embedded platform door control system of the present invention are as follows: redundant detection of external signals is achieved through two signal input modules with redundant channels; redundant control of the platform doors is achieved through two signal output modules with redundant channels; the connection relationship among the signal input module, the logic module, and the signal output module constitutes a closed-loop control. Combining redundant detection and redundant control, automatic diagnosis and automatic switching of the system can be realized, thereby improving the reliability of the system.

[0011] Optionally, the signal input module includes a primary input channel and a backup input channel that are redundant to each other;

[0012] The input end of the primary input channel is connected to the external signal and the output end of the logic module; the output end of the primary input channel is connected to the input end of the logic module;

[0013] The input end of the backup input channel is connected to the external signal and the output end of the logic module; the output end of the backup input channel is connected to the input end of the logic module.

[0014] Optionally, the logic module includes a logic analysis unit and a logic control unit;

[0015] The input end of the logic analysis unit is connected to the output end of the signal input module; the output end of the logic analysis unit is connected to the input end of the signal input unit; the input end of the logic control unit is connected to the output end of the logic analysis unit and the output end of the signal output unit; the output end of the logic control unit is connected to the input end of the signal output unit.

[0016] Optionally, the signal output module includes a primary output unit and a backup output unit that are redundant to each other;

[0017] The input end of the primary output unit is connected to the output end of the logic module; the output end of the primary output unit is connected to the input end of the logic module and the platform doors;

[0018] The input end of the backup output unit is connected to the output end of the logic module; the output end of the backup output unit is connected to the input end of the logic module and the platform doors.

[0019] Optionally, the primary output unit includes a primary output channel and a primary output detection channel;

[0020] The input end of the primary output channel is connected to the output end of the logic module; the output end of the primary output channel is connected to the input end of the primary output detection channel and the platform doors;

[0021] The output end of the main output detection channel is connected to the input end of the logic module.

[0022] Optionally, the backup output unit includes a backup output channel and a backup output detection channel;

[0023] The input end of the backup output channel is connected to the output end of the logic module; the output end of the backup output channel is connected to the input end of the backup output detection channel and the platform door;

[0024] The output end of the backup output detection channel is connected to the input end of the logic module.

[0025] Optionally, the main output detection channel includes a detection device; the detection device is used to detect the electrical signal of the main output channel, and the electrical signal is used to indicate the output state of the main output channel.

[0026] Optionally, the backup output detection channel includes a detection device; the detection device is used to detect the electrical signal of the backup output channel, and the electrical signal is used to indicate the output state of the backup output channel.

[0027] Optionally, the logic module includes a processor and a memory. At least one instruction, at least one program, a code set or an instruction set is stored in the memory, and the at least one instruction, at least one program, the code set or the instruction set is loaded and executed by the processor.

[0028] A platform door control method is also provided, which is applied to the platform door control system described above, and includes:

[0029] Receiving an external signal through a signal input module;

[0030] The logic module generates a switching signal and a control signal by logically analyzing the external signal, sends the switching signal to the signal input module, and sends the control signal to the signal output module; the switching signal is used to perform channel switching on the signal input module;

[0031] Sending the control signal to the platform door through the signal output module to control the platform door;

[0032] The signal output module generates a feedback signal according to the control signal and sends the feedback signal to the logic module. The logic module determines the output channel of the control signal according to the feedback signal, and the output channel is the main output channel or the backup output channel of the signal output module. Description of the Drawings

[0033] Figure 1 It is a system block diagram of the control system of the present invention;

[0034] Figure 2Partial system block diagram of the control system of the present invention Figure 1 ;

[0035] Figure 3 Partial system block diagram of the control system of the present invention Figure 2 ;

[0036] Figure 4 Circuit diagram of the main input channel of the present invention;

[0037] Figure 5 Circuit diagram of the standby input channel of the present invention;

[0038] Figure 6 Circuit diagram of the main output channel or standby input channel of the present invention;

[0039] Figure 7 Circuit diagram of the main output detection channel or standby output detection channel of the present invention;

[0040] Figure 8 Circuit diagram of the relay detection of the prior art;

[0041] Figure 9 Block diagram of the main output channel or standby input channel of the present invention;

[0042] Figure 10 Circuit diagram of the PSL detection.

[0043] Explanation of reference numerals: 1, signal input module; 101, main input channel; 102, standby input channel; 2, logic module; 201, logic analysis unit; 202, logic control unit; 3, signal output module; 301, main output unit; 3011, main output channel; 3012, main output detection channel; 302, standby output unit; 3021, standby output channel; 3022, standby output detection channel. Detailed implementation manners

[0044] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustration and explanation of the present invention, and are not intended to limit the present invention.

[0045] When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims. In the description of the present application, it should be understood that the terms "first", "second", "third", etc. are only used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence, nor can they be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0046] See Figures 1-3 As shown, the present invention provides a platform door control system, including: a signal input module 1, a logic module 2, and a signal output module 3; the input end of the signal input module 1 is connected to an external signal; the input end of the logic module 2 is connected to the output end of the signal input module 1 and the output end of the signal output module 3; the output end of the logic module 2 is connected to the input end of the signal input module 1 and the input end of the signal output module 3; the output end of the signal output module 3 is connected to the platform door.

[0047] The signal input module 1 includes two redundant main input channels 101 and standby input channels 102. The circuit structures of the two input channels are different. The input end of the main input channel 101 is connected to an external signal and the output end of the logic module 2; the output end of the main input channel 101 is connected to the input end of the logic module 2; the input end of the standby input channel 102 is connected to an external signal and the output end of the logic module 2; the output end of the standby input channel 102 is connected to the input end of the logic module 2.

[0048] The logic module 2 includes a logic analysis unit 201 and a logic control unit 202; the input end of the logic analysis unit 201 is connected to the output end of the signal input module 1; the output end of the logic analysis unit 201 is connected to the input end of the signal input unit; the input end of the logic control unit 202 is connected to the output end of the logic analysis unit 201 and the output end of the signal output unit; the output end of the logic control unit 202 is connected to the input end of the signal output unit.

[0049] The logic module 2 includes a processor and a memory. At least one instruction, at least one program, a code set, or an instruction set is stored in the memory, and the at least one instruction, at least one program, a code set, or an instruction set is loaded by the processor.

[0050] The processor can be a Central Processing Unit (CPU), or can also be other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field-Programmable Gate Arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.

[0051] The memory can be used to store the computer programs or modules. By running or executing the computer programs or modules stored in the memory, and by calling the data stored in the memory, the processor realizes various functions of the control system. The memory mainly includes a program storage area and a data storage area. Among them, the program storage area can store the operating system, application programs required for at least one function, etc.; the data storage area can store data created according to the use of the mobile phone, etc. In addition, the memory can include high-speed random access memory, and can also include non-volatile memory, such as hard disks, memory, plug-in hard disks, Smart Media Cards (SMCs), Secure Digital (SD) cards, Flash Cards, at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage devices.

[0052] The signal output module 3 includes two redundant main output units 301 and standby output units 302; the circuit structures of the two output units are the same; the input end of the main output unit 301 is connected to the output end of the logic module 2; the output end of the main output unit 301 is connected to the input end of the logic module 2 and the platform door; the input end of the standby output unit 302 is connected to the output end of the logic module 2; the output end of the standby output unit 302 is connected to the input end of the logic module 2 and the platform door.

[0053] The main output unit 301 includes a main output channel 3011 and a main output detection channel 3012; the input end of the main output channel 3011 is connected to the output end of the logic module 2; the output end of the main output channel 3011 is connected to the input end of the main output detection channel 3012 and the platform door; the output end of the main output detection channel 3012 is connected to the input end of the logic module 2; the main output detection channel 3012 includes a detection device; the detection device is used to detect the electrical signal of the main output channel 3011, and this electrical signal is used to indicate the output state of the main output channel 3011. When the detection device detects the electrical signal of the main output channel 3011, at this time the main output channel 3011 is in the working output state. When the detection device does not detect the electrical signal of the main output channel 3011, at this time the main output channel 3011 is in the non - working output state.

[0054] The standby output unit 302 includes a standby output channel 3021 and a standby output detection channel 3022; the input end of the standby output channel 3021 is connected to the output end of the logic module 2; the output end of the standby output channel 3021 is connected to the input end of the standby output detection channel 3022 and the platform door; the output end of the standby output detection channel 3022 is connected to the input end of the logic module 2; the standby output detection channel 3022 includes a detection device; the detection device is used to detect the electrical signal of the standby output channel 3021, and this electrical signal is used to indicate the output state of the standby output channel 3021. When the detection device detects the electrical signal of the standby output channel 3021, at this time the standby output channel 3021 is in the working output state. When the detection device does not detect the electrical signal of the standby output channel 3021, at this time the standby output channel 3021 is in the non - working output state.

[0055] Among them, in the main output detection channel 3012 and the standby output detection channel 3022, devices such as optocouplers, magnetic couplers, isolation amplifiers, digital isolators, etc. can be used as detection devices. For example, optocouplers use optical signals for isolation detection, magnetic couplers transmit signals through magnetic induction changes, and digital isolators use capacitive or inductive coupling methods to achieve isolation detection.

[0056] See Figure 4 As shown, it is the circuit structure diagram of the main input channel 101; see Figure 5 As shown, it is the circuit structure diagram of the standby input channel 102; Next, in combination with Figure 2 、 4 -5, the redundancy detection process of the signal input module 1 will be described in detail:

[0057] The external signals input to the signal input module 1 include the SIG linkage signal and the safety loop signal. The main input channel 101 and the backup input channel 102 detect the same signal I_CMD+ / I_CMD-. The logic module 2 controls the generation of the switching signal S_CHANNEL to prevent the backup input channel 102 from participating in the detection.

[0058] The main input channel 101 serves as the default working channel. Whether its signal is collected by the logic module 2 depends on the status of the bus address pin. The main input channel 101 and the backup input channel 102 are assigned to different bus address pins. When the address pin corresponding to the main input channel 101 is in the valid state, the logic module 2 automatically collects the signal of the main input channel 101. Therefore, in the control of the main input channel 101, unlike the backup input channel 102, there is no need for the logic module 2 to generate the S_CHANNEL switching signal to switch the backup input channel 102.

[0059] If there is a fault in the main input channel 101 or a switch is needed, the logic module 2 stops collecting the signal of the main input channel 101 by changing the status of the address pin and instead collects the signal of the backup input channel 102, so that the backup input channel 102 is only put into use when needed. When not needed, the backup input channel 102 is in a non-operating state, which can effectively prevent component damage.

[0060] The main input channel 101 detects the initial control signal CMD_M from the external signals I_CMD+ / I_CMD-. The logic module 2 makes a logical judgment on the initial control signal CMD_M in combination with other input signals. If the initial control signal CMD_M does not conform to the preset logic, the logic module 2 controls the switching signal S_CHANNEL to enable the backup input channel 102 to work. The backup input channel 102 detects the initial control signal CMD_S from the external signals I_CMD+ / I_CMD-. The logic module 2 makes a logical judgment on the initial control signal CMD_S again in combination with other input signals, thus realizing redundant detection of signals and automatic switching of input channels.

[0061] Taking the door opening and closing instructions as an example, under normal circumstances, the logical combination of the door opening signal and the door closing signal (external signals) is (1, 0) or (0, 1):

[0062] When the main input channel 101 detects the external signals of (1, 0) or (0, 1), the logic analysis unit 201 conducts a logical detection on the external signals. When the external signals conform to the internal control logic, they enter the next logical control through the logic control unit 202; during this process, the backup input channel 102 remains in the closed state and does not participate in the logical detection of the external signals.

[0063] When the main input channel 101 detects an external signal of (1, 1) or (0, 0), after the logic analysis unit 201 performs a logic detection on the external signal and determines that the external signal is an abnormal logic, the logic analysis unit 201 generates a switching signal to activate the standby input channel 102, realizing the switching of the detection channel, and performing a logic detection on the external signal through the standby input channel 102.

[0064] If the standby input channel 102 detects an external signal of (1, 0) or (0, 1), that is, when the logic analysis unit 201 detects that the external signal is a normal logic, it enters the next logical control through the logic control unit 202.

[0065] If the standby input channel 102 also detects an external signal of (1, 1) or (0, 0), that is, when the logic analysis unit 201 detects that the external signal is an abnormal logic, it is considered an external fault of the board. The logic analysis unit 201 continues to perform a logic detection on the external signal until the main input channel 101 or the standby input channel 102 detects a normal logic, and then enters the next logical control through the logic control unit 202.

[0066] See Figure 6 shown is the circuit diagram of the main output channel 3011 or the standby output channel 3021; see Figure 7 shown is the circuit diagram of the main output detection channel 3012 or the standby output detection channel 3022; next, in combination with Figure 3 、 6 -7, the redundancy control process of the signal output module 3 will be described in detail:

[0067] Taking the linked door opening as an example, the control signal is the door opening instruction:

[0068] The door opening instruction has two output units with independent but identical circuit structures, namely the main output unit 301 and the standby output unit 302; at any time, as long as one of the two output units outputs an instruction, the other output unit does not output an instruction. That is, when the main output unit 301 outputs the door opening instruction, the standby output unit 302 does not output the door opening instruction; when the standby output unit 302 outputs the door opening instruction, the main output unit 301 does not output the door opening instruction;

[0069] After the logic control unit 202 controls any one of the output units to output an opening instruction, the output detection channel detects the output state of its corresponding output channel, that is, the main output detection channel 3012 detects the output state of the main output channel 3011, and the backup output detection channel 3022 detects the output state of the backup output channel; if the output state meets the logic control expectation, the channel is maintained to continuously output the opening instruction; if the output state does not meet the logic control expectation, the opening instruction is switched to another output channel to be output to the platform door, and the above process is repeated to achieve the closed-loop control of the two redundant output channels.

[0070] In the prior art, different contacts of the same relay are generally used to achieve indirect output state detection. Refer to Figure 8 As shown, taking Omron G7SA-4A2B as an example, the output state detection of the prior art is described in detail. The circuit controls the relay to be attracted or disconnected through pin 0 and pin 1, and detects the output signals of pin 33 and pin 34. Usually, pin 53 and pin 54 are used as indirect detection points.

[0071] In such a detection method, if the contact between pin 33 and pin 34 is corroded, oxidized or the wiring is loose and the control signal cannot be normally output, the on-off state of pin 53 and pin 54 is detected, and the state of the output signal cannot be accurately judged; the deficiency of this detection method will bring certain misleading during the daily maintenance and fault repair of the equipment.

[0072] In the present invention, direct detection is realized in a non-mechanical contact manner. Taking the optocoupler isolator as an example of the detection device of the output detection channel (main output detection channel 3012 or backup output detection channel 3022) in the platform door control system of the present invention, the optocoupler isolator is directly connected to the output channel (main output channel 3011 or backup output channel 3021), that is, the optocoupler isolator is in parallel with the platform door, and detecting the on-off of the optocoupler isolator (whether an electrical signal is detected) can directly feedback the real-time state of the output channel.

[0073] It can be known from the data manuals of the relay and the optocoupler isolator that the theoretical service life of the relay is "mechanical: more than 10 million times (switching frequency 36,000 times / h), electrical more than 100,000 times (rated load)", and the theoretical service life of the optocoupler isolator is about 2,000,000 hours (in the present invention, it is a pure digital circuit, only using the switching characteristics of the optocoupler isolator, signal amplification is not required, If is taken as 3 - 5 mA, CRT≥50% is sufficient). Calculated according to opening and closing the door once every 5 minutes and working 18 hours a day, the theoretical service life of the relay is more than 126.8 years mechanically and more than 1.27 years electrically, and the theoretical life of the optocoupler isolator is 228.3 years;

[0074] In the above theoretical calculation, the optocoupler isolator is not affected by the working intensity, that is, the optocoupler isolator has nothing to do with the speed and number of opening and closing of the switch door, and is only related to time. The relay will reduce its theoretical service life with the increase of the working intensity, and the influence of environmental humidity, temperature, etc. on the relay life is greater than that on the optocoupler isolator life. Therefore, using the output detection channel including the optocoupler isolator (the main output detection channel 3012 or the standby output detection channel 3022) can directly detect the output state of the output channel (the main output channel 3011 or the standby output channel 3021), and the reliability of the direct detection is higher than that of the indirect detection using the relay.

[0075] In an embodiment of the present invention, refer to Figure 9 As shown, the main output channel 3011 or the standby output channel 3021 can use an independent drive power supply and a dedicated drive chip to replace Figure 6 the main output channel 3011 or the standby output channel 3021 composed of discrete components in Figure 6 that is, retain Figure 9 the three components Q1, Q2, and Q3 in

[0076] In an embodiment of the present invention, Figure 6 the three components Q1, Q2, and Q3 in Figure 9 (the field effect transistors, 1 P-channel and 1 N-channel in

[0077] In an embodiment of the present invention, the main output detection channel 3012 or the standby output detection channel 3022 can use ADC detection to replace the detection implemented by the optocoupler isolator. Refer to Figure 10 the PSL detection circuit shown. In the figure, CMD_CHECK is the control signal output by the main output channel 3011 or the standby output channel 3021. Compared with the detection method implemented by the optocoupler isolator, it can reduce costs, reduce power consumption, and reduce the number of components, thereby achieving the purpose of reducing the failure rate of the output detection circuit.

[0078] The present invention also provides a platform door control method, including:

[0079] Receiving an external signal through the signal input module 1;

[0080] The logic module 2 generates a switching signal and a control signal by logically analyzing the external signal, sends the switching signal to the signal input module 1, and sends the control signal to the signal output module 3; the switching signal is used to switch the channel of the signal input module 1;

[0081] The control signal is sent to the platform screen door through the signal output module 3 to control the platform screen door;

[0082] The signal output module 3 generates a feedback signal according to the control signal and sends the feedback signal to the logic module 2. The logic module 2 determines the output channel of the control signal according to the feedback signal, and the output channel is the main output channel 3011 or the backup output channel 3021 of the signal output module 3.

[0083] Through closed-loop control, redundant detection, and redundant switching, the present invention can overcome the deficiencies in traditional logic control where a single component failure requires manual intervention or degraded linkage. It can continue to operate without affecting subway operations in the event of a single component failure, reduce the probability of delays, and minimize the impact on passenger travel. While adapting to the future development trend of autonomous driving, it can also reduce labor costs.

[0084] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. An embedded-based platform screen door control system, characterized in that Comprising: A signal input module, a logic module, and a signal output module; The input end of the signal input module is connected to an external signal; the input end of the logic module is connected to the output end of the signal input module and the output end of the signal output module; the output end of the logic module is connected to the input end of the signal input module and the input end of the signal output module; the output end of the signal output module is connected to the platform door; the signal input module, the logic module, and the signal output module are used for closed-loop control of the platform door; The signal input module includes two redundant input channels; the signal output module includes two redundant output channels.

2. The platform door control system based on an embedded system according to claim 1, characterized in that, The signal input module includes a main input channel and a standby input channel that are redundant to each other; The input end of the main input channel is connected to the external signal and the output end of the logic module; the output end of the main input channel is connected to the input end of the logic module; The input end of the standby input channel is connected to the external signal and the output end of the logic module; the output end of the standby input channel is connected to the input end of the logic module.

3. The platform door control system based on an embedded system according to claim 1, wherein, The logic module includes a logic analysis unit and a logic control unit; The input end of the logic analysis unit is connected to the output end of the signal input module; the output end of the logic analysis unit is connected to the input end of the signal input unit; the input end of the logic control unit is connected to the output end of the logic analysis unit and the output end of the signal output unit; the output end of the logic control unit is connected to the input end of the signal output unit.

4. The platform door control system based on an embedded system according to claim 1, wherein The signal output module includes a main output unit and a standby output unit that are redundant to each other; The input end of the main output unit is connected to the output end of the logic module; the output end of the main output unit is connected to the input end of the logic module and the platform door; The input end of the standby output unit is connected to the output end of the logic module; the output end of the standby output unit is connected to the input end of the logic module and the platform door.

5. An embedded-based platform door control system according to claim 4, characterized in that, The main output unit includes a main output channel and a main output detection channel; The input end of the main output channel is connected to the output end of the logic module; the output end of the main output channel is connected to the input end of the main output detection channel and the platform door; The output end of the main output detection channel is connected to the input end of the logic module.

6. The platform door control system based on an embedded system according to claim 4, wherein, The standby output unit includes a standby output channel and a standby output detection channel; The input end of the standby output channel is connected to the output end of the logic module; the output end of the standby output channel is connected to the input end of the standby output detection channel and the platform door; The output end of the standby output detection channel is connected to the input end of the logic module.

7. The platform door control system based on an embedded system according to claim 5, wherein The main output detection channel includes a detection device; the detection device is used to detect the electrical signal of the main output channel, and the electrical signal is used to indicate the output state of the main output channel.

8. An embedded-based platform door control system according to claim 6, characterized in that, The standby output detection channel includes a detection device; the detection device is used to detect the electrical signal of the standby output channel, and the electrical signal is used to indicate the output state of the standby output channel.

9. The platform door control system based on an embedded system according to claim 1, wherein, The logic module includes a processor and a memory. At least one instruction, at least one program, a code set or an instruction set is stored in the memory, and the at least one instruction, at least one program, the code set or the instruction set is loaded and executed by the processor.

10. An embedded-based platform door control method, characterized in that, Applied to an embedded platform door control system described in the above claims 1-9, comprising: Receiving an external signal through a signal input module; The logic module generates a switching signal and a control signal by logically analyzing the external signal, sends the switching signal to the signal input module, and sends the control signal to the signal output module; the switching signal is used for channel switching of the signal input module; Sending the control signal to the platform door through the signal output module to control the platform door; The signal output module generates a feedback signal according to the control signal and sends the feedback signal to the logic module. The logic module determines the output channel of the control signal according to the feedback signal, and the output channel is the main output channel or the standby output channel of the signal output module.

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