CN209992589U - Detection system for electromagnetic compatibility immunity test of elevator control cabinet - Google Patents
Detection system for electromagnetic compatibility immunity test of elevator control cabinet Download PDFInfo
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- CN209992589U CN209992589U CN201920511366.3U CN201920511366U CN209992589U CN 209992589 U CN209992589 U CN 209992589U CN 201920511366 U CN201920511366 U CN 201920511366U CN 209992589 U CN209992589 U CN 209992589U
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Abstract
The utility model discloses a detection system for an electromagnetic compatibility immunity test of an elevator control cabinet, which comprises a detection controller, the elevator control cabinet, a pulse group, a lightning surge generator and an elevator simulation system; the detection controller is connected with the elevator control cabinet through a CAN BUS, and the elevator control cabinet is electrically connected with the pulse group, the lightning surge generator and the elevator simulation system. Compared with the traditional elevator control cabinet electromagnetic compatibility detection method, the utility model discloses not only solved defects such as elevator control cabinet electromagnetic compatibility detection operation is complicated, efficiency of software testing is low, realized moreover the automation of testing process, can the systematic analysis trouble reason, to improving elevator control system interference immunity, reduce the potential probability that takes place of elevator accident and have important meaning.
Description
Technical Field
The utility model belongs to electromechanical class special equipment electromagnetic compatibility detection area, concretely relates to experimental detecting system of elevator control cabinet electromagnetic compatibility immunity.
Background
Along with the complexity and miniaturization of the electrical control system of the elevator, the electromagnetic compatibility of the elevator control cabinet is valued by relevant departments. At present, a method adopted by a detection department for carrying out electromagnetic compatibility detection on an elevator control cabinet is manually operated by detection personnel, and part of detection items depend on the detection personnel to subjectively judge whether an elevator control system is in a normal state in a detection process, such as an electric fast pulse group and a lightning surge detection item.
Disclosure of Invention
An object of the utility model is to provide a detection system that elevator control cabinet electromagnetic compatibility noise immunity is experimental, solve current elevator control cabinet and carry out the method that electromagnetic compatibility detected and take and rely on measurement personnel manual operation, the operation is complicated, detect that degree of automation is low, and too rely on measurement personnel's subjective judgement, the lower technical problem of the testing result degree of accuracy.
The utility model discloses a solve above-mentioned technical problem, adopt following technical scheme:
a detection system for an electromagnetic compatibility immunity test of an elevator control cabinet comprises a detection controller, the elevator control cabinet, a pulse group and lightning surge generator and an elevator simulation system; the detection controller is connected with the elevator control cabinet through a CAN BUS, and the elevator control cabinet is electrically connected with the pulse group, the lightning surge generator and the elevator simulation system.
The elevator simulation system comprises a traction machine, a lift car, a door machine, a counterweight block, lift car safety tongs and a buffer, wherein three floor positions are arranged, an upper limit switch, a lower limit switch and a lower limit switch are arranged in a well, a door opening switch, a door closing switch and a photoelectric leveling sensor are arranged on each floor, and an encoder and a weighing sensor are arranged on the lift car; the upper limit switch, the lower limit switch, the door opening switch, the door closing switch, the photoelectric leveling sensor, the encoder and the weighing sensor are electrically connected with the elevator control cabinet;
the detection controller comprises an upper computer and a lower control center, wherein the upper computer comprises a first controller, a control panel, a storage module and a fault alarm module, and the control panel, the storage module and the fault alarm module are electrically connected with the first controller; the lower control center comprises a second controller, a CAN BUS communication module, a data storage module, an encoder signal receiving module, a switching value receiving module, a floor position signal sending module and an ADC module, wherein the CAN BUS communication module, the data storage module, the encoder signal receiving module, the switching value receiving module, the floor position signal sending module and the ADC module are electrically connected with the second controller; the lower control center is communicated with the upper computer and the elevator control cabinet through CAN BUS.
In a further improvement, the main control chip of the second controller is a 32-bit kernel STM32F407 based on Cortex-M4. A high-performance CAN driving chip with low power consumption and communication rate reaching 1MHz is adopted between a CAN BUS interface of the lower control center and the main control chip; in order to facilitate fault locking in the detection process, signal receiving and sending in the detection process each time need to be recorded, an off-chip EEPROM power-down data storage circuit is designed, and data are exchanged between an interface chip and a main control chip through an IIC bus; the encoder signal receiving circuit is used for monitoring the running speed of the elevator and the position of the elevator car; the switching value signal receiving circuit is used for receiving signals of an upper limit switch, a lower limit switch, a door opening in place, a door closing in place and a photoelectric level sensor of a hoistway; the floor position signal sending circuit is used for simulating a floor position calling button; the ADC circuit is used for receiving the signal of the weighing sensor and monitoring whether the elevator is in an overweight state or not. The upper computer is connected with the lower control center through a CAN USB adapter.
The specific model of the pulse group and lightning surge generator is TESEQ/NSG 3040. The pulse group and lightning surge generator is used for an electromagnetic compatibility immunity test and is used for simulating interference signals generated by switching of small inductive loads, jumping of relay contacts or switching of high-voltage switching devices or simulating transient interference of high energy caused by lightning stroke from the nature.
Further improvement, the upper computer is provided with elevator detection application software developed based on Microsoft visual Stuio2010 environment and written by using C # language. The main functions of the upper computer comprise that firstly: monitoring the state of an elevator control system in real time, wherein the state comprises the communication state in the detection process, and whether signals of an upper limit switch, a lower limit switch, a door opening in place, a door closing in place and a photoelectric flat bed sensor, an encoder and a weighing sensor are normally received or not; secondly, the method comprises the following steps: storing fault data, and when the fault of the monitoring part occurs in the detection process, sending an alarm prompt by the upper computer and automatically stopping the detection process; thirdly, the method comprises the following steps: the system comprises a human-computer interaction part, namely a control interface, a detection part and a control part, wherein the detection part is used for detecting basic information input by a person to be detected and selecting a detection mode, the detection mode is divided into a manual mode and an automatic mode, and the manual mode comprises three floor buttons of an elevator, a door opening button, a door closing button and a stopping button; the automatic mode comprises a self-checking mode and a detection mode, the self-checking mode is used for self-checking of the elevator control system before project detection so as to determine that the elevator control system is in a normal state before detection, the detection mode is used for normal detection, the whole detection process comprises the steps that the lift car firstly reaches the first floor to open and close the door, then ascends to the second floor to open and close the door, then ascends to the third floor to open and close the door, and then descends to the second floor to open and close the door, and the process is circulated until the detection is finished.
The detection method of the detection system based on the electromagnetic compatibility immunity test of the elevator control cabinet comprises the following steps:
step one, switching on power supplies of a detection controller and an elevator control cabinet, starting detection software on a control panel of an upper computer, and then logging in a user;
checking whether the communication between the elevator simulation system and the elevator control cabinet and the communication between the elevator simulation system and the detection controller are normal, clicking a self-checking button on a control panel after the communication is determined to be correct, and performing self-checking on the elevator control system to ensure that the elevator control system is in a normal state before electromagnetic compatibility immunity test detection is performed;
step three, after self-checking, inputting basic information of the elevator control cabinet to be detected through a control interface, then switching on a pulse group and a lightning surge generator power supply, and setting test parameters of a pulse peak value, a pulse rise time, a pulse duration and a repetition frequency:
after the parameter setting is finished, clicking a detection button of detection software to start detection, transmitting signals of an upper limit switch, a lower limit switch, a door opening switch, a door closing switch, a photoelectric leveling sensor, an encoder and a weighing sensor to an upper computer in real time by a lower control center in the whole detection process, and displaying the signals on a control interface to achieve the purpose of real-time detection;
in the detection process, the lower control center sends and receives signals to and stores the signals into the EEPROM chip; so as to facilitate fail-locking in the event of a failure. When a fault occurs in the detection process, the detection software automatically stops the detection process, an alarm module of the upper computer sends out a fault alarm, and the fault code transmitted from the EEPROM is automatically stored; and meanwhile, the upper computer generates a detection report file according to the position and the phenomenon of the fault, and then feeds the detection report back to an elevator control cabinet design manufacturer to modify the elevator.
Further improvement, the parameter setting in the step two includes the following two cases:
1) and if the input and output ports of the alternating current power supply of the elevator control cabinet are subjected to the electric fast transient pulse group test, setting parameters of the TESEQ/NSG 3040 according to an electric fast transient pulse group test standard GB/T24808 and 2009 in the existing elevator electromagnetic compatibility test project, wherein the specific test method refers to GB/T17626.4-2008. For all circuits, the pulse peak value needs to be set to be 1.0KV, the pulse rise time is 5ns, the pulse duration is 50ns, and the repetition frequency is 5 kHz; for a safety circuit, the pulse peak value is required to be set to be 4.0KV, the pulse rise time is 5ns, the pulse duration is 50ns, and the repetition frequency is 2.5 kHz;
2) and if surge testing is carried out on the input and output ports of the alternating current power supply of the elevator control cabinet, parameter setting is carried out on the TESEQ/NSG 3040 according to a surge testing standard GB/T24808-2009, and a specific testing method is carried out by referring to GB/T17626.5-2008. For all circuit and safety circuit tests, the pulse rise time is required to be 1.2 mus, and the pulse duration is required to be 50 mus; the pulse peak was set to +/-2.0kV for the line-to-ground test section and +/-1.0kV for the line-to-line test section.
In the third step, in the process of monitoring each signal in the running process of the elevator, the encoder signal receiving module receives the signal of the encoder and is used for monitoring the running speed and the position of the elevator car, and the switching value signal receiving module receives the signals of the upper limit switch, the lower limit switch, the door opening switch, the door closing switch and the photoelectric leveling sensor in real time; the ADC module is used for monitoring signals of the weighing sensor.
Compared with the prior art, the beneficial effects of the utility model are as follows:
compared with the traditional elevator control cabinet electromagnetic compatibility detection method, the utility model discloses not only solved elevator control cabinet electromagnetic compatibility detection operation complicated, the drawback such as efficiency of software testing is beneath, realized the automation of testing process moreover, can the system analysis trouble reason, to improving elevator control system interference immunity, reduce the potential probability that takes place of elevator accident and have the significance.
Drawings
Fig. 1 is the utility model discloses pulse group and thunderbolt surge detecting system block diagram.
Fig. 2 is a block diagram of the detection controller of the present invention.
Fig. 3 is a schematic diagram of a lower control center circuit according to the present invention.
Detailed Description
In order to make the purpose and technical solution of the present invention clearer, the following will combine the embodiments of the present invention to clearly and completely describe the technical solution of the present invention.
The first embodiment is as follows:
as shown in fig. 1-3, a detection system for an electromagnetic compatibility immunity test of an elevator control cabinet comprises a detection controller, the elevator control cabinet, a pulse group and lightning surge generator and an elevator simulation system; the detection controller is connected with the elevator control cabinet through a CAN BUS, and the elevator control cabinet is electrically connected with the pulse group, the lightning surge generator and the elevator simulation system.
The elevator simulation system comprises a traction machine, a lift car, a door machine, a counterweight block, lift car safety tongs and a buffer, wherein three floor positions are arranged, an upper limit switch, a lower limit switch and a lower limit switch are arranged in a well, a door opening switch, a door closing switch and a photoelectric leveling sensor are arranged on each floor, and an encoder and a weighing sensor are arranged on the lift car; the upper limit switch, the lower limit switch, the door opening switch, the door closing switch, the photoelectric leveling sensor, the encoder and the weighing sensor are electrically connected with the elevator control cabinet;
the detection controller comprises an upper computer and a lower control center, wherein the upper computer comprises a first controller, a control panel, a storage module and a fault alarm module, and the control panel, the storage module and the fault alarm module are electrically connected with the first controller; the lower control center comprises a second controller, a CAN BUS communication module, a data storage module, an encoder signal receiving module, a switching value receiving module, a floor position signal sending module and an ADC module, wherein the CAN BUS communication module, the data storage module, the encoder signal receiving module, the switching value receiving module, the floor position signal sending module and the ADC module are electrically connected with the second controller; the lower control center is communicated with the upper computer and the elevator control cabinet through CAN BUS.
In the embodiment, the main control chip of the second controller is a 32-bit kernel STM32F407 based on Cortex-M4. A high-performance CAN driving chip with low power consumption and communication rate reaching 1MHz is adopted between a CAN BUS interface of the lower control center and the main control chip; in order to facilitate fault locking in the detection process, signal receiving and sending in the detection process each time need to be recorded, an off-chip EEPROM power-down data storage circuit is designed, and data are exchanged between an interface chip and a main control chip through an IIC bus; the encoder signal receiving circuit is used for monitoring the running speed of the elevator and the position of the elevator car; the switching value signal receiving circuit is used for receiving signals of an upper limit switch, a lower limit switch, a door opening in place, a door closing in place and a photoelectric level sensor of a hoistway; the floor position signal sending circuit is used for simulating a floor position calling button; the ADC circuit is used for receiving the signal of the weighing sensor and monitoring whether the elevator is in an overweight state or not. The upper computer is connected with the lower control center through a CAN USB adapter.
In this embodiment, the specific model of the pulse train and lightning surge generator is tesseq/NSG 3040. The pulse group and lightning surge generator is used for an electromagnetic compatibility immunity test and is used for simulating interference signals generated by switching of small inductive loads, jumping of relay contacts or switching of high-voltage switching devices or simulating transient interference of high energy caused by lightning stroke from the nature.
In this embodiment, the upper computer is installed with elevator detection application software developed based on Microsoft visual intuio 2010 environment, and is written in C # language. The main functions of the upper computer comprise that firstly: monitoring the state of an elevator control system in real time, wherein the state comprises the communication state in the detection process, and whether signals of an upper limit switch, a lower limit switch, a door opening in place, a door closing in place and a photoelectric flat bed sensor, an encoder and a weighing sensor are normally received or not; secondly, the method comprises the following steps: storing fault data, and when the fault of the monitoring part occurs in the detection process, sending an alarm prompt by the upper computer and automatically stopping the detection process; thirdly, the method comprises the following steps: the system comprises a human-computer interaction part, namely a control interface, a detection part and a control part, wherein the detection part is used for detecting basic information input by a person to be detected and selecting a detection mode, the detection mode is divided into a manual mode and an automatic mode, and the manual mode comprises three floor buttons of an elevator, a door opening button, a door closing button and a stopping button; the automatic mode comprises a self-checking mode and a detection mode, the self-checking mode is used for self-checking of the elevator control system before project detection so as to determine that the elevator control system is in a normal state before detection, the detection mode is used for normal detection, the whole detection process comprises the steps that the lift car firstly reaches the first floor to open and close the door, then ascends to the second floor to open and close the door, then ascends to the third floor to open and close the door, and then descends to the second floor to open and close the door, and the process is circulated until the detection is finished.
Example two:
the detection method of the detection system based on the electromagnetic compatibility immunity test of the elevator control cabinet comprises the following steps:
step one, switching on power supplies of a detection controller and an elevator control cabinet, starting detection software on a control panel of an upper computer, and then logging in a user;
checking whether the communication between the elevator simulation system and the elevator control cabinet and the communication between the elevator simulation system and the detection controller are normal, clicking a self-checking button on a control panel after the communication is determined to be correct, and performing self-checking on the elevator control system to ensure that the elevator control system is in a normal state before electromagnetic compatibility immunity test detection is performed;
step three, after self-checking, inputting basic information of the elevator simulation system to be detected through a control interface, then switching on a pulse group and a lightning surge generator power supply, and setting test parameters of a pulse peak value, a pulse rise time, a pulse duration and a repetition frequency:
after the parameter setting is finished, clicking a detection button of detection software to start detection, transmitting signals of an upper limit switch, a lower limit switch, a door opening switch, a door closing switch, a photoelectric leveling sensor, an encoder and a weighing sensor to an upper computer in real time by a lower control center in the whole detection process, and displaying the signals on a control interface to achieve the purpose of real-time detection;
in the detection process, the lower control center sends and receives signals to and stores the signals into the EEPROM chip; so as to facilitate fail-locking in the event of a failure. When a fault occurs in the detection process, the detection software automatically stops the detection process, an alarm module of the upper computer sends out a fault alarm, and the fault code transmitted from the EEPROM is automatically stored; and meanwhile, the upper computer generates a detection report file according to the position and the phenomenon of the fault, and then the detection report is fed back to an elevator control system design manufacturer to modify the elevator.
In this embodiment, the parameter setting in the step two includes the following two cases:
1) and if the input and output ports of the alternating current power supply of the elevator control cabinet are subjected to the electric fast transient pulse group test, setting parameters of the TESEQ/NSG 3040 according to an electric fast transient pulse group test standard GB/T24808 and 2009 in the existing elevator electromagnetic compatibility test project, wherein the specific test method refers to GB/T17626.4-2008. For all circuits, the pulse peak value needs to be set to be 1.0KV, the pulse rise time is 5ns, the pulse duration is 50ns, and the repetition frequency is 5 kHz; for a safety circuit, the pulse peak value is required to be set to be 4.0KV, the pulse rise time is 5ns, the pulse duration is 50ns, and the repetition frequency is 2.5 kHz;
2) and if surge testing is carried out on the input and output ports of the alternating current power supply of the elevator control cabinet, parameter setting is carried out on the TESEQ/NSG 3040 according to a surge testing standard GB/T24808-2009, and a specific testing method is carried out by referring to GB/T17626.5-2008. For all circuit and safety circuit tests, the pulse rise time is required to be 1.2 mus, and the pulse duration is required to be 50 mus; the pulse peak was set to +/-2.0kV for the line-to-ground test section and +/-1.0kV for the line-to-line test section.
In the third step, in the process of monitoring each signal in the elevator running process, the encoder signal receiving module receives the signal of the encoder, which is used for monitoring the elevator running speed and the car position, and the switching value signal receiving module receives the signals of the upper limit switch, the lower limit switch, the door opening switch, the door closing switch and the photoelectric leveling sensor in real time; the ADC module is used for monitoring signals of the weighing sensor.
What has not been described in detail in the present invention is the prior art or can be realized by the prior art, and the specific embodiment of the present invention is only the preferred embodiment of the present invention, which is not intended to limit the scope of the present invention. All equivalent changes and modifications made according to the content of the claims of the present invention should be regarded as the technical scope of the present invention.
Claims (3)
1. The detection system for the electromagnetic compatibility immunity test of the elevator control cabinet is characterized by comprising a detection controller, the elevator control cabinet, a pulse group and lightning surge generator and an elevator simulation system; the detection controller is connected with the elevator control cabinet through CANBUS, and the elevator control cabinet is electrically connected with the pulse group, the lightning surge generator and the elevator simulation system;
the elevator simulation system comprises a traction machine, a lift car, a door machine, a counterweight block, lift car safety tongs and a buffer, wherein three floor positions are arranged, an upper limit switch, a lower limit switch and a lower limit switch are arranged in a well, a door opening switch, a door closing switch and a photoelectric leveling sensor are arranged on each floor, and an encoder and a weighing sensor are arranged on the lift car; the upper limit switch, the lower limit switch, the door opening switch, the door closing switch, the photoelectric leveling sensor, the encoder and the weighing sensor are electrically connected with the elevator control cabinet;
the detection controller comprises an upper computer and a lower control center, wherein the upper computer comprises a first controller, a control panel, a storage module and a fault alarm module, and the control panel, the storage module and the fault alarm module are electrically connected with the first controller; the lower control center comprises a second controller, a CAN BUS communication module, a data storage module, an encoder signal receiving module, a switching value receiving module, a floor position signal sending module and an ADC module, wherein the CAN BUS communication module, the data storage module, the encoder signal receiving module, the switching value receiving module, the floor position signal sending module and the ADC module are electrically connected with the second controller; the lower control center is communicated with the upper computer and the elevator control cabinet through CAN BUS.
2. The system for detecting the electromagnetic compatibility immunity test of the elevator control cabinet according to the claim 1, characterized in that the main control chip of the second controller is a 32-bit kernel STM32F407 based on Cortex-M4.
3. The detection system for the elevator control cabinet electromagnetic compatibility immunity test according to claim 1 or 2, wherein the specific model of the pulse group and lightning surge generator is TESEQ/NSG 3040.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109946547A (en) * | 2019-04-15 | 2019-06-28 | 南京市特种设备安全监督检验研究院 | The detection system and detection method of elevator control cabinet electromagnetic compatibility immunity test |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109946547A (en) * | 2019-04-15 | 2019-06-28 | 南京市特种设备安全监督检验研究院 | The detection system and detection method of elevator control cabinet electromagnetic compatibility immunity test |
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