CN218445853U - Domestic explosion-proof high-reliability switch state monitoring system - Google Patents
Domestic explosion-proof high-reliability switch state monitoring system Download PDFInfo
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- CN218445853U CN218445853U CN202221924322.1U CN202221924322U CN218445853U CN 218445853 U CN218445853 U CN 218445853U CN 202221924322 U CN202221924322 U CN 202221924322U CN 218445853 U CN218445853 U CN 218445853U
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Abstract
The utility model discloses a domestic explosion-proof type high reliability on-off state monitoring system, including magnetic switch module, signal transmitter, guard's circuit, control panel and human-computer interaction unit, the magnetic switch module passes through signal transmitter and is connected with the guard's circuit electricity, the guard's circuit is connected with the control panel electricity, control panel and human-computer interaction unit communication connection, on-off state monitoring system have designed the guard's circuit and have resisted the external shock, and the circuit is realized easily, and the security is high, satisfies special environment's explosion-proof demand.
Description
Technical Field
The utility model belongs to the technical field of the switch monitoring, concretely relates to domestic explosion-proof type high reliability on-off state monitoring system.
Background
Along with the continuous development of science and technology, the safety requirements on equipment and environment are higher and higher, the requirements on the performance of the equipment are higher and higher in the environment with special high-reliability requirements such as explosion prevention, the design challenge not only on an explosion-proof shell but also on a safety circuit is realized, the on-off state monitoring system can be used for monitoring the on-off state of a cabin door, the existing on-off state monitoring system is lack of an explosion-proof circuit, and the explosion-proof requirements in the special environment are difficult to meet.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a domestic explosion-proof type high reliability on-off state monitoring system.
The specific scheme is as follows:
the domestic explosion-proof high-reliability switch state monitoring system comprises a magnetic switch module, a signal transmitter, a safety barrier circuit, a control panel and a human-computer interaction unit, wherein the magnetic switch module is electrically connected with the safety barrier circuit through the signal transmitter, the safety barrier circuit is electrically connected with the control panel, and the control panel is in communication connection with the human-computer interaction unit.
The safety grid circuit comprises a fuse, a current limiting resistor and at least two groups of Zener diodes connected in parallel, wherein the fuse is connected with the Zener diodes connected in parallel in series, and the Zener diodes connected in parallel are connected with the current limiting resistor in series.
The signal transmitter is electrically connected with a safety barrier circuit through a current-limiting resistor, and the safety barrier circuit is electrically connected with the control panel through a fuse.
The magnetic switch module is a pair of magnetic switches, the control panel comprises a microcontroller and a CAN communication circuit, and the microcontroller is in communication connection with the human-computer interaction unit through the CAN communication circuit.
The human-computer interaction unit is an upper computer.
The switch state monitoring system also comprises a power supply module, wherein the power supply module provides working voltage for the magnetic switch module, the signal transmitter, the guard gate circuit and the control panel.
The utility model discloses a domestic explosion-proof high-reliability switch state monitoring system, which comprises a magnetic switch module, a signal transmitter, a safety gate circuit, a control panel and a human-computer interaction unit, wherein the magnetic switch module is arranged at two sides of a tested device; the magnetic switch is connected with the control panel through a signal transmitter and a guard gate circuit; the control panel and the human-computer interaction unit are connected through the CAN communication bus, the on-off state of the tested equipment CAN be directly observed through the upper computer, the on-off state monitoring system is provided with the safety barrier circuit to resist external impact, the circuit is easy to realize, the safety is high, and the explosion-proof requirement of a special environment is met.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a circuit diagram of a safing gate circuit.
Fig. 3 is a circuit diagram of a microcontroller.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings. Obviously, the described embodiments are only a part of the implementations of the present invention, and not all implementations, and all other embodiments obtained by those skilled in the art without any inventive work are included in the scope of the present invention.
As shown in fig. 1, the domestic explosion-proof high-reliability switch state monitoring system comprises a magnetic switch module 2, a signal transmitter 4, a barrier circuit 5, a control panel 3 and a human-computer interaction unit 6, wherein the magnetic switch module 2 is electrically connected with the barrier circuit 5 through the signal transmitter 4, the barrier circuit 5 is electrically connected with the control panel 3, and the control panel 3 is in communication connection with the human-computer interaction unit 6.
As shown in fig. 2, the safing gate circuit 5 includes a fuse 7, a current limiting resistor 9 and at least two sets of zener diodes 8 connected in parallel, wherein the fuse 7 is connected in series with the zener diodes 8 connected in parallel, and the zener diodes 8 connected in parallel are connected in series with the current limiting resistor 9.
The signal transmitter 4 is electrically connected with the safety barrier circuit 5 through a current limiting resistor 9, and the safety barrier circuit 5 is electrically connected with the control board 3 through a fuse 7.
The signal transmitter 4 is a device for processing various signals, and can convert various physical quantities from sensors, such as temperature signals, current signals, electric quantity signals, etc., into an electric signal, and the working principle is as follows: firstly, the signal is modulated and converted through a semiconductor device, then isolated and converted through a light sensing or magnetic sensing device, then demodulated and converted back to the original signal before isolation, and meanwhile, the power supply of the isolated signal is isolated, so that the absolute independence among the converted signal, the power supply and the ground is ensured, and the technical effect of protecting a lower-level control loop is achieved.
In the present embodiment, the fuse 7 is a fuse for protecting the zener diode 8 and preventing the zener diode from being burned out, in fig. 2, if a high voltage is mixed into the side of the dangerous area due to some reason, the zener diode 8 is broken down in a reverse direction, and after the reverse breakdown, the zener diode 8 is in a conducting state, at this time, the zener diode 8 limits the mixed high voltage to the zener voltage, a high voltage does not appear on the side of the dangerous area, once the zener diode 8 is conducted, a current flowing through the zener diode 8 rises sharply, the fuse 7 connected in series in the circuit is instantly blown out, and a power supply is cut off, thereby ensuring safety of field equipment and personnel. When a fault occurs on the safety zone side, for example, a load is short-circuited, the current limiting resistor 9 in the safety gate circuit 5 performs a current limiting function to limit the short-circuit current value within a safety range, so that the field is also safe.
The magnetic switch module 2 is a pair of magnetic switches, the pair of magnetic switches are respectively installed on two sides of the device to be tested, in this embodiment, the magnetic switches are installed on two sides of the cabin door, preferably, the magnetic switches are reed pipes, the reed pipes are also called as magnetrons, and are switch elements controlled by magnetic field signals, when the magnetic switches are not magnetic, the circuit is disconnected, the circuit can be used for detecting mechanical motion or the state of the circuit, and when the magnetic switches are not in a working state, two reeds in the glass pipe are not in contact. If a magnetic substance is close to the glass tube, the two reeds are magnetized and mutually attracted together under the action of the magnetic field, so that the circuit is closed. When the magnetic substance disappears, no external magnetic force is applied, and the two reeds are separated due to the elasticity of the reeds, so that the circuit is disconnected.
As shown in fig. 3, the control board 3 includes a microcontroller 10 and a CAN communication circuit, the microcontroller 10 is in communication connection with the human-computer interaction unit 6 through the CAN communication circuit, and the model of the microcontroller is preferably HWD32F103MLQFP64.
The human-computer interaction unit 6 is an upper computer, the control panel 3 is connected with the upper computer through a CAN communication bus, and the on-off state of the tested equipment CAN be directly observed through the upper computer. In this embodiment, the microcontroller 10 acquires the on-off state of the device under test through the I/O port state, and uploads the on-off state to the upper computer through the CAN communication, so that the on-off state of the device under test CAN be observed conveniently through the upper computer. The CAN communication belongs to the field bus category, is a serial communication network which effectively supports distributed control or real-time control, has the advantages of high performance and reliability, and provides powerful technical support for realizing real-time and reliable data communication among all nodes of a distributed control system.
The switch state monitoring system further comprises a power supply module 1, wherein the power supply module 1 is a magnetic switch module 2, and a signal transmitter 4, a safety barrier circuit 5 and a control panel 3 provide working voltage.
In the embodiment, the size of the control board 3 is phi 90mm, the size of the safety barrier circuit board is phi 90mm, the power of a single product is not more than 1.6W, and compared with other similar circuit boards, the power is lower, and the intrinsically safe explosion-proof requirement is met. All components involved in the product in the embodiment can meet 100% localization requirements, and are verified by localization in the data center of the fifth institute of electronics, the ministry of industry and informatization.
The domestic explosion-proof high-reliability switch state monitoring system comprises the following specific working processes:
the magnetic switch module 2 is used for monitoring the on-off state of the equipment to be tested, converting the on-off state into a corresponding electric signal, transmitting the on-off state to the control panel 3 through the signal transmitter 4 and the safety barrier circuit 5, transmitting the on-off state signal to the human-computer interaction unit 6 through the CAN communication circuit by the control panel 3, and acquiring the on-off state of the equipment through the human-computer interaction unit 6.
The switch state monitoring system designs a safety barrier circuit to resist external impact, the circuit is easy to realize, low in price, easy to select types and not easy to damage, and the place requiring change of the original system structure is small; the explosion-proof principle of the safety barrier is that the Zener diode 8 is used for controlling output voltage, the current limiting resistor 9 is used for limiting output current, the circuit is relatively simple, in addition, the safety barrier circuit has no influence on the precision of an original signal due to no signal conversion, the circuit is easy to realize, the safety is high, and the explosion-proof requirement in a special environment is met.
The utility model discloses a domestic explosion-proof high-reliability switch state monitoring system, which comprises a magnetic switch module, a signal transmitter, a safety gate circuit, a control panel and a human-computer interaction unit, wherein the magnetic switch module is arranged at two sides of a tested device; the magnetic switch is connected with the control panel through a signal transmitter and a guard gate circuit; the control panel and the human-computer interaction unit are connected through the CAN communication bus, the on-off state of the tested equipment CAN be directly observed through the upper computer, the on-off state monitoring system is provided with the safety barrier circuit to resist external impact, the circuit is easy to realize, the safety is high, and the explosion-proof requirement of a special environment is met.
The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.
Claims (6)
1. Domestic explosion-proof type high reliability on-off state monitoring system, its characterized in that: including magnetic switch module (2), signal transmitter (4), guard grating circuit (5), control panel (3) and human-computer interaction unit (6), wherein, magnetic switch module (2) is connected with guard grating circuit (5) electricity through signal transmitter (4), guard grating circuit (5) are connected with control panel (3) electricity, control panel (3) and human-computer interaction unit (6) communication connection.
2. The localization explosion-proof high-reliability switch state monitoring system according to claim 1, characterized in that: the safety barrier circuit (5) comprises a fuse (7), a current limiting resistor (9) and at least two groups of Zener diodes (8) connected in parallel, wherein the fuse (7) is connected with the Zener diodes (8) connected in parallel in series, and the Zener diodes (8) connected in parallel are connected with the current limiting resistor (9) in series.
3. The homemade explosion-proof high-reliability switch state monitoring system according to claim 2, wherein: the signal transmitter (4) is electrically connected with the safety barrier circuit (5) through a current limiting resistor (9), and the safety barrier circuit (5) is electrically connected with the control board (3) through a fuse (7).
4. The localization explosion-proof high-reliability switch state monitoring system according to claim 1, characterized in that: the magnetic switch module (2) is a pair of magnetic switches, the control panel (3) comprises a microcontroller (10) and a CAN communication circuit, and the microcontroller (10) is in communication connection with the human-computer interaction unit (6) through the CAN communication circuit.
5. The localization explosion-proof high-reliability switch state monitoring system according to claim 1, characterized in that: the human-computer interaction unit (6) is an upper computer.
6. The localization explosion-proof high-reliability switch state monitoring system according to claim 1, characterized in that: the switch state monitoring system further comprises a power module (1), wherein the power module (1) is a magnetic switch module (2), and a signal transmitter (4), a guard gate circuit (5) and a control panel (3) provide working voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221924322.1U CN218445853U (en) | 2022-07-25 | 2022-07-25 | Domestic explosion-proof high-reliability switch state monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221924322.1U CN218445853U (en) | 2022-07-25 | 2022-07-25 | Domestic explosion-proof high-reliability switch state monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218445853U true CN218445853U (en) | 2023-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221924322.1U Active CN218445853U (en) | 2022-07-25 | 2022-07-25 | Domestic explosion-proof high-reliability switch state monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218445853U (en) |
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2022
- 2022-07-25 CN CN202221924322.1U patent/CN218445853U/en active Active
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Address after: No. 311, Science Avenue, High-tech Zone, Zhengzhou City, Henan Province, 450000 Patentee after: China Shipbuilding Haiwei High tech Co.,Ltd. Address before: 450001 NO.311, science Avenue, high tech Zone, Zhengzhou City, Henan Province Patentee before: HAIWEI ZHENGZHOU HIGH TECHNOLOGY Co.,Ltd. |