CN217048608U - Control device of shielding door climate conversion system - Google Patents
Control device of shielding door climate conversion system Download PDFInfo
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- CN217048608U CN217048608U CN202220996616.9U CN202220996616U CN217048608U CN 217048608 U CN217048608 U CN 217048608U CN 202220996616 U CN202220996616 U CN 202220996616U CN 217048608 U CN217048608 U CN 217048608U
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Abstract
The utility model relates to the technical field of air flow management of rail transit vehicles, and discloses a control device of a weather conversion system of a shield door, which comprises a main control unit, a relay, an address setting unit, a communication unit, a display unit, an input and output unit, an AD conversion unit and a driving loop; the main control unit is respectively and electrically connected with the address setting unit, the display unit, the communication unit and the input and output unit; the driving circuit comprises a first photoelectric coupler, a second photoelectric coupler, a resistor R1, a resistor R2, a resistor R3 and a resistor R4, and when the driving circuit is actually used, the coil of the relay is controlled by adding the first photoelectric coupler, so that the interference between the main control unit and the first photoelectric coupler can be avoided; and secondly, the AD conversion unit is used for detecting the voltage of one end of the resistor R3 electrically connected with the resistor R4, so that when the main control unit outputs a control signal to enable the coil of the relay to be conducted, whether the voltage is input into the coil of the relay can be detected to detect whether the coil of the relay is normal.
Description
Technical Field
The utility model relates to a rail transit vehicle's air current management technical field, concretely relates to shield door climate switching system controlling means.
Background
Because the subway is built under the ground and has poor ventilation, an air conditioning system needs to be assembled when the subway is built to realize ventilation. However, the subway has a large whole space area except for passenger waiting platforms and safety inspection areas, elevator getting-on and getting-off areas and the like, and if the ventilation inside the whole subway is realized by only using an air conditioning system, the power consumption is large, and the operation cost of the subway is increased. On the basis, the climate conversion device is additionally arranged when the subway shield door is built, when a train drives to a passenger waiting area, the climate conversion device can be opened, air can flow into the subway from the climate conversion device due to the pressure difference generated by high-speed running of the train, the air can circulate, the working time of an air conditioning system can be reduced, the power consumption can be reduced, the impact of the air on the shield door can be reduced, and the service life of the shield door can be prolonged.
When the existing shielded door climate switching device is controlled, whether the climate switching device is switched on or switched off is mainly controlled through an ECC (error correction code) controller, wherein the existing ECC controller comprises a main control unit and a relay, a contact of the relay is connected with a power supply, and the main control unit controls whether the power supply is input into the climate switching device by controlling whether a coil of the relay is electrified. The existing ECC controller has the following defects in actual use: firstly, the main control unit does not know whether the control coil of the relay can be normally electrified or not, and when the control coil of the relay fails to be normally electrified, the control coil of the relay is electrified although the main control chip outputs a control signal, but the failed relay cannot normally improve the power supply to the climate switching device; and secondly, interference exists between the main control chip and the relay.
SUMMERY OF THE UTILITY MODEL
In view of the not enough of background art, the utility model provides a shield door weather conversion system controlling means solves not enough that current ECC controller exists.
For solving the technical problem, the utility model provides a following technical scheme: the control device of the shield door climate conversion system comprises a main control unit, at least one relay, an address setting unit, a communication unit, a display unit, an input/output unit, an AD conversion unit and driving loops the number of which is the same as that of the relays; the main control unit is respectively and electrically connected with the address setting unit, the display unit, the communication unit and the input and output unit; the driving circuit comprises a first photoelectric coupler, a second photoelectric coupler, a resistor R1, a resistor R2, a resistor R3 and a resistor R4; the input end of the primary side of the first photoelectric coupler and the input end of the primary side of the second photoelectric coupler are respectively electrically connected with the main control unit, the output end of the primary side of the first photoelectric coupler is grounded through a resistor R1, and the output end of the primary side of the second photoelectric coupler is grounded through a resistor R2; the input end of the secondary side of the first photoelectric coupler is electrically connected with one end of a coil of a relay, the output end of the secondary side of the first photoelectric coupler is electrically connected with one end of a resistor R3, the other end of a resistor R3 is electrically connected with one end of a resistor R4 and an AD conversion unit respectively, the other end of the resistor R4 is grounded, and the AD conversion unit is electrically connected with the main control unit; and the secondary side of the second photoelectric coupler is connected with the resistor R3 in parallel.
In a certain embodiment, the display unit comprises an indicator light and a nixie tube, and the indicator light and the nixie tube are respectively and electrically connected with the main control unit.
In certain embodiments, the address setting unit is a dial switch.
In one embodiment, the main control unit comprises a single chip microcomputer.
In a certain embodiment, the utility model discloses still include UPS power, voltage conversion unit and step-down unit, external input power source inserts the UPS power, voltage conversion unit is disposed and is converted the output voltage of UPS power into first voltage, first voltage is imported respectively the control coil other end of step-down unit and relay, step-down unit will first voltage converts the second voltage into, the second voltage be disposed in to the main control unit power supply.
In one embodiment, the communication unit comprises an RS485 communication unit.
Compared with the prior art, the utility model the beneficial effect who has is: firstly, a coil of the relay is controlled by adding a first photoelectric coupler, so that the interference between the main control unit and the first photoelectric coupler can be avoided, and the normal operation of the main control unit is ensured; secondly, the voltage of one end of the resistor R3 electrically connected with the resistor R4 is detected through the AD conversion unit, whether the voltage is input to a coil of the relay can be detected when the main control unit outputs a control signal to enable the coil of the relay to be conducted, and then whether the coil of the relay is normal is detected; in addition, the two ends of the resistor R3 are connected with the second photoelectric coupler in parallel, and when the coil of the relay does not need to be detected to be normal, the resistor R3 is short-circuited through the second photoelectric coupler, so that the use power consumption of the circuit can be reduced.
Drawings
FIG. 1 is a schematic view of the structure of the present invention in the embodiment;
FIG. 2 is a circuit diagram of a main control unit, a driving circuit and an AD conversion unit in an embodiment;
fig. 3 is a schematic diagram of connection of the UPS power supply, the voltage conversion unit, and the voltage reduction unit in an embodiment.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic drawings, which illustrate the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 1-2, the control device of the screen door climate switching system comprises a main control unit 1, a relay 7, an address setting unit 2, a communication unit 3, a display unit 4, an input/output unit 5, an AD conversion unit 8 and a driving circuit 6; the main control unit 1 is electrically connected with the address setting unit 2, the display unit 3, the communication unit 4 and the input and output unit 5 respectively.
When in actual use, the address setting unit 2 is used for setting the physical addresses of the utility model, so that when a plurality of utility models are deployed, because the physical addresses of each utility model are different, the utility model with different physical addresses can send instructions independently; wherein the address setting unit 2 may use a dial switch; the main control unit 1 can receive instructions and send own state information to an upper computer, a server or a background terminal through the communication unit 3; the communication unit 3 can adopt an RS485 communication unit; the main control unit 1 can display the state information of itself through the display unit 4; the display unit 4 may be a nixie tube or an indicator light, and in a certain embodiment, the display unit 4 may also be a display screen; the main control unit 1 may receive or output the digital quantity signal through the input-output unit 5.
In actual use, two or more relays 7 and drive circuits 6 may be provided depending on the number of driven climate change devices.
The driving circuit 6 comprises a first photocoupler U1, a second photocoupler U2, a resistor R1, a resistor R2, a resistor R3 and a resistor R4; the input end of the primary side of the first photoelectric coupler U1 and the input end of the primary side of the second photoelectric coupler U2 are electrically connected with the main control unit 1 respectively, the output end of the primary side of the first photoelectric coupler U1 is grounded through a resistor R1, and the output end of the primary side of the second photoelectric coupler U2 is grounded through a resistor R2; the input end of the secondary side of the first photoelectric coupler U1 is electrically connected with one end of a coil KM of a relay 7, the output end of the secondary side of the first photoelectric coupler U1 is electrically connected with one end of a resistor R3, the other end of the resistor R3 is respectively electrically connected with one end of a resistor R4 and an AD conversion unit 8, the other end of the resistor R4 is grounded, and the AD conversion unit 8 is electrically connected with the main control unit 1; the secondary side of the second photocoupler U2 is connected in parallel with the resistor R3.
In actual use, when the main control unit 1 inputs a high-level driving signal to the input terminals of the primary sides of the first and second photocouplers U1 and U2, the secondary sides of the first and second photocouplers U1 and U2 are turned on. When the secondary side of the first photoelectric coupler U1 is conducted, the coil KM of the relay 7 is connected to a power supply VCC, the coil KM of the relay 7 is electrified, when it is necessary to detect whether the coil KM of the relay 7 is normal, the AD conversion unit 8 performs AD conversion on one end of the resistor R3 electrically connected to the resistor R4, the main control unit 1 obtains a detection result from the AD conversion unit 8, and when it is not necessary to detect the power supply on the end of the resistor R3 electrically connected to the resistor R4, the main control unit 1 can input a high-level driving signal to the primary side of the second photoelectric coupler U2, so that the secondary side of the second photoelectric coupler U2 is conducted, and further, the resistor R3 is short-circuited, and power consumption is reduced.
In addition, in this embodiment, as shown in fig. 3, the present invention further includes a UPS power supply 9, a voltage conversion unit 10 and a voltage reduction unit 11, the external input power supply is connected to the UPS power supply 9, the voltage conversion unit 10 is configured to convert the output voltage of the UPS power supply 9 into a first voltage, the first voltage is respectively input to the voltage reduction unit 11 and the other end of the control coil KM of the relay 7, the voltage reduction unit 11 converts the first voltage into a second voltage, and the second voltage is configured to supply power to the main control unit 1. In actual use, the external input power source may be a 110V ac power source, the first voltage is 24V dc voltage, and the second voltage is 5V dc voltage.
To sum up, the utility model can avoid the interference between the main control unit 1 and the relay 7 by increasing the first photoelectric coupler U1 to control the coil KM of the relay 7, thereby ensuring the normal operation of the main control unit 1; secondly, the voltage at one end of the resistor R3 electrically connected with the resistor R4 is detected through the AD conversion unit 8, so that whether voltage flows through the coil KM of the relay 7 can be detected when the main control unit 1 outputs a control signal to enable the coil KM of the relay 7 to be conducted, and the coil KM of the relay 7 is ensured to be normal; in addition, the two ends of the resistor R3 are connected with the second photoelectric coupler U2 in parallel, when the coil KM of the relay 7 does not need to be detected to be normal, the resistor R3 is short-circuited through the second photoelectric coupler U2, and the use power consumption of the circuit can be reduced.
In light of the above, the present invention is to be construed as being applicable to various changes and modifications within the scope of the present invention as defined by the appended claims. The technical scope of the present invention is not limited to the content of the description, and must be determined according to the scope of the claims.
Claims (6)
1. The control device of the shield door climate conversion system comprises a main control unit and at least one relay, and is characterized by also comprising an address setting unit, a communication unit, a display unit, an input/output unit, an AD conversion unit and driving circuits the number of which is the same as that of the relays; the main control unit is respectively and electrically connected with the address setting unit, the display unit, the communication unit and the input and output unit; the driving circuit comprises a first photoelectric coupler, a second photoelectric coupler, a resistor R1, a resistor R2, a resistor R3 and a resistor R4; the input end of the primary side of the first photoelectric coupler and the input end of the primary side of the second photoelectric coupler are respectively electrically connected with the main control unit, the output end of the primary side of the first photoelectric coupler is grounded through a resistor R1, and the output end of the primary side of the second photoelectric coupler is grounded through a resistor R2; the input end of the secondary side of the first photoelectric coupler is electrically connected with one end of a coil of a relay, the output end of the secondary side of the first photoelectric coupler is electrically connected with one end of a resistor R3, the other end of the resistor R3 is electrically connected with one end of a resistor R4 and an AD conversion unit respectively, the other end of the resistor R4 is grounded, and the AD conversion unit is electrically connected with the main control unit; and the secondary side of the second photoelectric coupler is connected with the resistor R3 in parallel.
2. The barrier door climate conversion system control device according to claim 1, wherein the display unit comprises an indicator light and a nixie tube, and the indicator light and the nixie tube are respectively electrically connected with the main control unit.
3. The barrier door climate conversion system control device of claim 1, wherein the address setting unit is a dial switch.
4. The barrier door climate conversion system control device of claim 1, wherein the master control unit comprises a single-chip microcomputer.
5. The barrier door climate system control apparatus of claim 1, further comprising a UPS power source, a voltage converting unit, and a voltage dropping unit, wherein an external input power source is connected to the UPS power source, the voltage converting unit is configured to convert an output voltage of the UPS power source into a first voltage, the first voltage is respectively input to the voltage dropping unit and the other end of the control coil of the relay, the voltage dropping unit converts the first voltage into a second voltage, and the second voltage is configured to supply power to the main control unit.
6. The barrier door climate conversion system control device of claim 1, wherein the communication unit comprises an RS485 communication unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220996616.9U CN217048608U (en) | 2022-04-27 | 2022-04-27 | Control device of shielding door climate conversion system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220996616.9U CN217048608U (en) | 2022-04-27 | 2022-04-27 | Control device of shielding door climate conversion system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217048608U true CN217048608U (en) | 2022-07-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220996616.9U Active CN217048608U (en) | 2022-04-27 | 2022-04-27 | Control device of shielding door climate conversion system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217048608U (en) |
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2022
- 2022-04-27 CN CN202220996616.9U patent/CN217048608U/en active Active
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