CN217374512U - Train arrival detection device circuit - Google Patents
Train arrival detection device circuit Download PDFInfo
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- CN217374512U CN217374512U CN202220887981.6U CN202220887981U CN217374512U CN 217374512 U CN217374512 U CN 217374512U CN 202220887981 U CN202220887981 U CN 202220887981U CN 217374512 U CN217374512 U CN 217374512U
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- 230000005693 optoelectronics Effects 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 4
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- 230000002147 killing effect Effects 0.000 abstract description 4
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Abstract
The utility model provides a train detection device circuit that enters a station, including the main control chip module, a relay module for outwards sending alternating current signal, a photoelectric sensor module for controlling the relay module power to switch on when detecting that the train enters a station in order to send alternating current signal, a signal conversion module for receiving alternating current signal and converting the alternating current signal into high level signal, a communication module for receiving the control data signal that control terminal sent and sending to the main control chip module and receiving the train data signal that enters a station that the main control chip module sent and sending to control terminal, a power supply module for providing required power for each module; the signal output end of the signal conversion module is electrically connected with the signal input end of the main control chip module. The utility model provides a pair of train detection device circuit that arrives at a station when can reduce engineering time and expense, improves signal transmission's interference killing feature.
Description
Technical Field
The utility model relates to an electronic circuit technical field especially relates to a train detection device circuit that enters station.
Background
At present, the current train detection device that gets into station is mostly realized at 100 meters position installation detecting sensor apart from the platform, but discovery in practice, current detecting sensor mostly need arrange fiber circuit or shielded wire transmission RS485 communication signal and carry out signal transmission, and fiber circuit mostly needs at the job site fusion optic fibre, and then can lead to the engineering time long, the problem of expense is taken place, and the collocation use of shielded wire then need install detection module at 100 meters position apart from the platform, and then there is not high and receive shortcomings such as interference easily of communication rate.
Therefore, it is desirable to provide a train arrival detection device circuit to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves provides a train detection device circuit that arrives at a station, when can reducing engineering time and expense, improves signal transmission's interference killing feature.
In order to solve the above technical problem, the utility model discloses a technical scheme provides a train detection device circuit that arrives at a station, including main control chip module 1, be used for sending the relay module 2 of the alternating current signal outwards, be used for controlling when detecting that the train arrives at a station the relay module 2 power switches on so that it sends the photoelectric sensor module 3 of alternating current signal, be used for receiving the alternating current signal and with alternating current signal conversion high level signal's signal conversion module 4, be used for receiving the control data signal that control terminal sent and send to main control chip module 1 and receive the train data signal that arrives at a station that main control chip module 1 sent and send to control terminal's communication module 5, be used for providing the power supply module 6 of required power for each module; the signal output end of the signal conversion module 4 is electrically connected with the signal input end of the main control chip module 1.
In the examples, it is preferred that:
the relay module 2 comprises a relay switch K1 used for sending the alternating current signal to the signal conversion module 4 when being closed, and a relay switch K1 used for controlling the relay switch; a switched relay coil RP1, a freewheeling diode D5 for preventing sudden changes in voltage and current to protect the photosensor module 3, a capacitor C14 for absorbing surge voltage to protect the freewheeling diode D5;
the freewheeling diode D5 is connected in parallel to two ends of the relay coil RP1, the capacitor C14 is connected in parallel to two ends of the freewheeling diode D5, and the signal output terminal of the photosensor module 3 is electrically connected to the relay coil RP 1.
In the examples, it is preferred that:
including being used for switching on so as to control when the train is inbound in the photoelectric sensor module 3 relay module 2 outwards sends alternating current signal's PNP type phototriode Q1, PNP type phototriode Q1's projecting pole electricity is connected relay module 2, collecting electrode ground connection.
In the examples, it is preferred that:
the signal conversion module 4 comprises a rectifier bridge VD1 for converting an alternating current signal input by the relay module 2 into a direct current signal, a voltage stabilizing chip U3 for stabilizing a direct current voltage output by the rectifier bridge VD1, and a photoelectric coupler U4 for outputting a high level signal when receiving the direct current voltage output by the voltage stabilizing chip U3, wherein a signal output end of the photoelectric coupler U4 is electrically connected with a signal input end of the main control chip module 1.
In the examples, it is preferred that:
including the communication chip U2 that the model is MAX485 in the communication module 5, be used for receiving switch on so that to the low level signal that main control chip module 1 output during the low level signal communication chip U2 sends train data signal that arrives at a station photoelectric coupler U5, be used for receiving switch on so that to main control chip module 1 sends control data signal's photoelectric coupler U6, be used for external during the low level signal of communication chip U2 output control terminal's interface terminal J1, communication chip U2's control signal receiving terminal with interface terminal J1 electricity is connected.
In the examples, it is preferred that:
the power supply module 6 comprises a rectifier bridge VD2 for converting an external alternating voltage into a direct voltage, and a voltage stabilizing chip U7 for stabilizing the direct voltage output by the rectifier bridge VD1 so as to provide required power for each module.
The utility model has the advantages that: the utility model provides a pair of train detection device circuit that arrives at a station when can reduce engineering time and expense, improves signal transmission's interference killing feature.
Drawings
Fig. 1 is a schematic block diagram of a circuit structure of a train arrival detection device circuit of the present invention;
fig. 2 is a schematic circuit diagram of the main control chip module and the communication module of the present invention;
fig. 3 is a schematic circuit diagram of the relay module, the controlled switch module and the signal conversion module of the present invention;
fig. 4 is a schematic circuit diagram of the power supply module of the present invention.
Detailed Description
The technical solution of the present invention will be described in detail with reference to the drawings.
Referring to fig. 1, the train arrival detection device circuit of this embodiment includes a main control chip module 1, a relay module 2 for sending an ac electrical signal to the outside, a photoelectric sensor module 3 for controlling the power supply of the relay module 2 to be turned on when detecting that a train arrives at the station to send the ac electrical signal, a signal conversion module 4 for receiving the ac electrical signal and converting the ac electrical signal into a high-level signal, a communication module 5 for receiving a control data signal sent by a control terminal and sending the control data signal to the main control chip module 1, receiving a train arrival data signal sent by the main control chip module 1 and sending the train arrival data signal to the control terminal, and a power supply module 6 for providing required power supplies for the modules; wherein, the signal output end of the signal conversion module 4 is electrically connected with the signal input end of the main control chip module 1.
In this embodiment, when a subway enters a station, light emitted from the end of a train triggers the photoelectric sensor module 3 to be conducted, and then the photoelectric sensor module 3 can control the power supply of the relay module 2 to be conducted so as to enable the relay module to emit a 220V alternating current signal, and then the signal conversion module 4 can output a TTL high-level signal to the main control chip module 1 when obtaining the alternating current signal; if the photoelectric sensor module 3 is not triggered by light emitted from the end of the subway, the relay module 2 can be in a power-off state, and then the output alternating current signal is 0V, or no alternating current signal is output, and at this time, the signal conversion module 4 can output a TTL low-level signal to the main control chip module 1.
In this embodiment, the train detection device that arrives at a station that the application described, it only needs to install near the platform, when it senses the light that the train tip sent, can realize the effect that the train arrived at a station and detects, it not only need not to weld the optic fibre at the job site, still need not detection module and installs 100 meters positions apart from the platform, and then not only can reduce engineering time and expense, still improve signal transmission's interference killing feature.
Referring to fig. 2, in the embodiment of the present invention, it is preferable that:
the communication module 5 comprises a communication chip U2 with the model of MAX485, a photoelectric coupler U5 which is used for being conducted when receiving a low level signal output by the main control chip module 1 so as to send a train arrival data signal to the communication chip U2, a photoelectric coupler U6 which is used for being conducted when receiving a low level signal output by the communication chip U2 so as to send a control data signal to the main control chip module 1, and an interface terminal J1 which is used for externally connecting a control terminal, wherein a control signal receiving end of the communication chip U2 is electrically connected with the interface terminal J1.
In this embodiment, when the control terminal sends data in, the communication chip U2 can automatically send this data to the main control chip module 1 through the RXD pin, and similarly, when the main control chip module 1 sends data out, the communication chip U2 can automatically send this data to the control terminal through the TXD pin.
For example, when the main control chip module 1 sends data to the control terminal, if the signal output end of the main control chip module 1 outputs a high level signal, the photocoupler U5 is not turned on, and then the DE end of the communication chip U2 is high and the DI end is grounded, so the AB end sends a low level signal through the 485 bus; when the signal output end of the main control chip module 1 outputs a low level signal, the photoelectric coupler U5 is turned on, so that the RE end of the communication chip U2 can be in a high level state, and then the communication chip U2 enters a signal receiving mode of the control terminal, and an a end is obtained through a pull-up resistor and a pull-down resistor, so that the AB end sends a high level signal through a 485 bus; similarly, when the main control chip module 1 receives the data sent by the control terminal, the signal output end of the main control chip module 1 can continuously output the low level signal, and then the photoelectric coupler U5 is turned on, the communication chip U2 can be always in the signal receiving mode, and then the data of the data accessible 485 bus sent by the control terminal enters the communication chip U2 from the AB, and the low level signal is output by the RO end of the communication chip U2 to turn on the photoelectric coupler U6, so as to output the signal to the main control chip module 1.
Referring to fig. 3, in the embodiment of the present invention, it is preferable that:
the relay module 2 comprises a relay switch K1 used for sending alternating current signals to the signal conversion module 4 when being closed and a relay switch K1 used for controlling; a switched relay coil RP1, a freewheeling diode D5 for preventing sudden changes in voltage and current to protect the photosensor module 3, a capacitor C14 for absorbing surge voltage to protect the freewheeling diode D5;
the freewheeling diode D5 is connected in parallel to two ends of the relay coil RP1, the capacitor C14 is connected in parallel to two ends of the freewheeling diode D5, and the signal output end of the photosensor module 3 is electrically connected to the relay coil RP 1.
In this embodiment, the diode D5 connected in parallel with the relay coil RP1 is a protection diode, which is also called a freewheeling diode, because at the moment of power failure of the inductor of the relay coil RP1, a higher reverse voltage is generated across the relay coil RP1, and this voltage is superimposed with the power supply voltage and is applied to the photosensor module 3, which is likely to exceed the maximum reverse breakdown voltage of the photosensor module 3, so that the photosensor module 3 is broken down and damaged, and the diode D5 functions to eliminate the influence of this reverse voltage and protect the normal operation of the circuit to prevent the damage of the circuit elements.
In this embodiment, when a subway enters a station, light emitted from the end of the train triggers the photoelectric sensor module 3 to be conducted, and then the photoelectric sensor module 3 can drive the relay coil RP1 to be electrified and then attract ON, and conversely, when the photoelectric sensor module 3 is cut OFF, the relay coil RP1 does not have power and releases OFF.
In this embodiment, the diode D5 can control the circuit current to change more gradually when the current changes suddenly or decreases, so as to avoid the occurrence of surge voltage and improve the safety of the circuit of the train arrival detection device.
Referring to fig. 3, in the embodiment of the present invention, it is preferable that:
the photoelectric sensor module 3 comprises a PNP type phototriode Q1 which is used for conducting when a train enters the station so as to control the relay module 2 to send out an alternating current signal, and an emitting electrode of the PNP type phototriode Q1 is electrically connected with the relay module 2 and a collecting electrode is grounded.
In this embodiment, when the PNP phototriode Q1 receives light emitted from the end of the train, it can be turned on, and after the relay coil RP1 is energized, the iron core can be magnetized to generate a large enough electromagnetic force to attract the armature and drive the reed, so that the moving contact and the fixed contact in the relay switch K1 are closed or separated, that is, the originally closed contact is opened, and the originally opened contact is closed; when the PNP phototriode Q1 is cut off, namely no current flows through the relay coil RP1 at the emitter, namely the relay coil RP1 is powered off, the electromagnetic attraction force disappears, the armature returns to the original position, and the movable contact and the static contact return to the original closed or separated state.
Referring to fig. 3, in the embodiment of the present invention, it is preferable that:
the signal conversion module 4 comprises a rectifier bridge VD1 for converting an alternating current signal input by the relay module 2 into a direct current signal, a voltage stabilizing chip U3 for stabilizing a direct current voltage output by the rectifier bridge VD1, and a photoelectric coupler U4 for outputting a high level signal when receiving the direct current voltage output by the voltage stabilizing chip U3, wherein a signal output end of the photoelectric coupler U4 is electrically connected with a signal input end of the main control chip module 1.
In this embodiment, when receiving the 220V ac signal sent by the relay module 2, the rectifier bridge VD1 may first convert the ac signal into a dc signal, so as to start the subsequent components in the subsequent signal conversion module 4, and then when the input terminal of the optoelectronic coupler U4 is powered by a signal, the diode light emitter in the optoelectronic coupler U4 may emit light, and the phototriode in the optoelectronic coupler U4 may generate a photocurrent after receiving the light, and flow out from the output terminal, thereby implementing the conversion of converting the ac signal into a high level signal.
Referring to fig. 4, in the embodiment of the present invention, it is preferable that:
the power supply module 6 includes a rectifier bridge VD2 for converting an external ac voltage into a dc voltage, and a voltage stabilizing chip U7 for stabilizing the dc voltage output by the rectifier bridge VD1 so as to provide the required power supply for each module.
It can be seen that, by implementing the train arrival detection device circuit described in fig. 1 to fig. 4, the anti-interference capability of signal transmission can be improved while the construction time and the cost are reduced.
In addition, the train arrival detection device circuit described in fig. 1 to 4 has the advantages of relatively simple circuit, good field practicability and the like, so that an operator can easily operate the equipment in the control system, and the misoperation of the equipment can not be caused while the operator is separated for maintenance.
The above is only the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the same reason as the protection scope of the present invention.
Claims (6)
1. The utility model provides a train detection device circuit that arrives at a station which characterized in that: the system comprises a main control chip module (1), a relay module (2) used for sending an alternating current signal outwards, a photoelectric sensor module (3) used for controlling the power supply of the relay module (2) to be conducted so as to enable the relay module to send the alternating current signal when detecting that a train enters the station, a signal conversion module (4) used for receiving the alternating current signal and converting the alternating current signal into a high-level signal, a communication module (5) used for receiving a control data signal sent by a control terminal and sending the control data signal to the main control chip module (1), receiving the train entering data signal sent by the main control chip module (1) and sending the train entering the station data signal to the control terminal, and a power supply module (6) used for providing required power supplies for the modules; the signal output end of the signal conversion module (4) is electrically connected with the signal input end of the main control chip module (1).
2. The train arrival detection device circuit of claim 1, wherein:
the relay module (2) comprises a relay switch K1 used for sending the alternating current signal to the signal conversion module (4) when being closed, and a relay switch K1 used for controlling the relay switch; a switched relay coil RP1, a freewheeling diode D5 for preventing sudden changes in voltage and current to protect the photosensor module (3), a capacitor C14 for absorbing surge voltage to protect the freewheeling diode D5;
the freewheeling diode D5 is connected in parallel to two ends of the relay coil RP1, the capacitor C14 is connected in parallel to two ends of the freewheeling diode D5, and the signal output end of the photoelectric sensor module (3) is electrically connected with the relay coil RP 1.
3. The train arrival detection device circuit according to claim 1, characterized in that:
including being used for switching on so as to control when the train is inbound in photoelectric sensor module (3) relay module (2) outwards sends alternating current signal's PNP type phototriode Q1, PNP type phototriode Q1's projecting pole electricity is connected relay module (2), collecting electrode ground connection.
4. The train arrival detection device circuit according to claim 1, characterized in that:
the signal conversion module (4) comprises a rectifier bridge VD1 for converting an alternating current signal input by the relay module (2) into a direct current signal, a voltage stabilizing chip U3 for stabilizing a direct current voltage output by the rectifier bridge VD1, and a photoelectric coupler U4 for outputting a high-level signal when receiving the direct current voltage output by the voltage stabilizing chip U3, wherein the signal output end of the photoelectric coupler U4 is electrically connected with the signal input end of the main control chip module (1).
5. The train arrival detection device circuit according to any one of claims 1 to 4, characterized in that:
including the communication chip U2 that the model is MAX485 in communication module (5), be used for receiving switch on so that to the low level signal of master control chip module (1) output during the low level signal, be used for receiving communication chip U2 sends the optoelectronic coupler U5 of train data signal that arrives at a station, be used for receiving switch on so that to master control chip module (1) send the optoelectronic coupler U6 of control data signal, be used for external when exporting low level signal communication chip U2 control terminal's interface terminal J1, communication chip U2's control signal receiving terminal with the interface terminal J1 electricity is connected.
6. The train arrival detection device circuit of claim 1, wherein:
the power supply module (6) comprises a rectifier bridge VD2 for converting an external alternating voltage into a direct voltage and a voltage stabilizing chip U7 for stabilizing the direct voltage output by the rectifier bridge VD1 so as to provide required power for each module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220887981.6U CN217374512U (en) | 2022-04-15 | 2022-04-15 | Train arrival detection device circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220887981.6U CN217374512U (en) | 2022-04-15 | 2022-04-15 | Train arrival detection device circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217374512U true CN217374512U (en) | 2022-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220887981.6U Active CN217374512U (en) | 2022-04-15 | 2022-04-15 | Train arrival detection device circuit |
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|---|---|
| CN (1) | CN217374512U (en) |
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- 2022-04-15 CN CN202220887981.6U patent/CN217374512U/en active Active
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| GR01 | Patent grant | ||
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Effective date of registration: 20221205 Address after: 519000 room 111, 1st floor, No.6 workshop, No.9 Jinzhu Road, Tangjiawan Town, Zhuhai City, Guangdong Province Patentee after: ZHUHAI SINGYES NEW MATERIALS TECHNOLOGY Co.,Ltd. Patentee after: Shuifa Xingye energy (Zhuhai) Co.,Ltd. Address before: 519085 room 111, 1st floor, No.6 workshop, No.9 Jinzhu Road, Tangjiawan Town, Xiangzhou District, Zhuhai City, Guangdong Province Patentee before: ZHUHAI SINGYES NEW MATERIALS TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address |
Address after: 519000 room 111, 1st floor, No.6 workshop, No.9 Jinzhu Road, Tangjiawan Town, Zhuhai City, Guangdong Province Patentee after: Zhuhai Shuifa Xingye New Materials Technology Co.,Ltd. Country or region after: China Patentee after: Shuifa Xingye energy (Zhuhai) Co.,Ltd. Address before: 519000 room 111, 1st floor, No.6 workshop, No.9 Jinzhu Road, Tangjiawan Town, Zhuhai City, Guangdong Province Patentee before: ZHUHAI SINGYES NEW MATERIALS TECHNOLOGY Co.,Ltd. Country or region before: China Patentee before: Shuifa Xingye energy (Zhuhai) Co.,Ltd. |