CN218767900U - Railway signal resistance-capacitance box on-line monitoring device - Google Patents
Railway signal resistance-capacitance box on-line monitoring device Download PDFInfo
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- CN218767900U CN218767900U CN202222117136.3U CN202222117136U CN218767900U CN 218767900 U CN218767900 U CN 218767900U CN 202222117136 U CN202222117136 U CN 202222117136U CN 218767900 U CN218767900 U CN 218767900U
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Abstract
The utility model relates to an on-line monitoring technical field, the utility model provides a railway signal resistance-capacitance box on-line monitoring device, including the main control unit, a power supply circuit, electric capacity voltage acquisition circuit, opto-coupler U4, keep apart output circuit and wireless communication unit, power supply circuit and isolation output circuit all are connected with the main control unit, the main control unit communicates with monitor terminal with the help of wireless communication unit, opto-coupler U4 is used for keeping apart electric capacity voltage acquisition circuit and isolation output circuit, electric capacity voltage acquisition circuit's input is arranged in gathering the electric capacity voltage that railway signal resistance-capacitance box appears, electric capacity voltage acquisition's output connects opto-coupler U4's input, isolation output circuit's input is connected to opto-coupler U4's output, keep apart output circuit output and connect the main control unit, through above-mentioned technical scheme, when railway signal resistance-capacitance box appears unusually, the problem that relevant staff can not in time discover has been solved.
Description
Technical Field
The utility model relates to an on-line monitoring technical field, it is specific relates to a railway signal resistance-capacitance box on-line monitoring device.
Background
In a railway signal control circuit in a railway transportation command system, a plurality of time-limited control elements which are combined by resistors and capacitors are arranged. Different combined elements and the direct current electromagnetic relay form a switch or a signal and other safety control circuits. When the combined internal resistance or capacitance value is abnormal, the normal work of the safety control circuit is directly influenced, and if relevant workers do not find the abnormal internal resistance or capacitance value in time, railway running faults are caused, and the safe and punctual running of trains is influenced, so that the detection device for the railway signal capacitance-resistance box is particularly important.
SUMMERY OF THE UTILITY MODEL
The utility model provides a railway signal hinders and holds box on-line monitoring device has solved when railway signal hinders and holds the box and appear unusually, the problem that relevant staff can not in time discover.
The technical scheme of the utility model as follows:
the utility model provides a railway signal resistance-capacitance box on-line monitoring device, includes main control unit, power supply circuit, electric capacity voltage acquisition circuit, opto-coupler U4, isolation output circuit and wireless communication unit, power supply circuit with isolation output circuit all with the main control unit is connected, the main control unit with the help of wireless communication unit communicates with monitor terminal, opto-coupler U4 is used for keeping apart electric capacity voltage acquisition circuit with isolation output circuit, electric capacity voltage acquisition circuit's input is used for gathering the electric capacity voltage in the railway signal resistance-capacitance box, the output that electric capacity voltage was gathered is connected the input of opto-coupler U4, the output of opto-coupler U4 is connected the input of isolation output circuit, isolation output circuit output end is connected the main control unit, electric capacity voltage acquisition circuit includes resistance R11, zener diode VS1, electric capacity C15 and operational amplifier U3, the inverting input of operational amplifier U3 passes through the positive pole of electric capacity in the resistance-capacitance box is connected, the negative pole ground connection of electric capacity in-phase input of operational amplifier U3, the negative pole of operational amplifier U3 is connected the inverting input of operational amplifier U3, the inverting input of operational amplifier U3 passes through the inverting input of second inverting phase of operational amplifier U3 the input of operational amplifier U5 is connected the inverting input of operational amplifier U3, the inverting phase of operational amplifier U3 is connected the input of the operational amplifier U3.
Further, in the utility model discloses in U5, resistance R13, electric capacity C16 and resistance R14 are put including fortune to isolation output circuit, U5's inverting input is put to fortune is connected the first output of opto-coupler U4, U5's homophase input is put to fortune is connected the second output of opto-coupler U4, U5's homophase input ground connection is put to fortune, U5's output is put to fortune passes through resistance R13 is connected U5's inverting input is put to fortune, U5's output is put to fortune passes through electric capacity C16 connects U5's inverting input is put to fortune, U5's output is put to fortune passes through resistance R14 connects the main control unit.
Further, the utility model discloses in power supply circuit includes first power supply circuit and second power supply circuit, first power supply circuit includes power converter U1, zener diode D1, resistance R4, resistance R5 and inductance L1, and DC power supply in the resistance-capacitance box is connected to zener diode D1's positive pole, zener diode D1's negative pole is connected power converter U1 power input end, power converter U1's control end passes through resistance R4 connects zener diode D1's negative pole, power converter U1's control end passes through resistance R5 ground connection, power converter U1's output passes through inductance L1 output 5V power, first power supply circuit with second power supply circuit's circuit structure is the same, first power supply circuit is used for exporting 3.3V power.
Further, the utility model discloses in still include alarm circuit, alarm circuit includes that U6, resistance R15, electric capacity C20, alarm BL, emitting diode LED1 and electric capacity C19 are put to electric capacity C18, rheostat RP1, fortune, U6's inverting input end is connected rheostat RP 1's slip end, rheostat RP 1's first end is passed through electric capacity C18 connects the master control unit, rheostat RP 1's second end ground connection, U6's homophase input end ground connection is put to fortune, U6's output is put to fortune is connected resistance R15's first end, resistance R15's second end is passed through electric capacity C20 connects the first end of alarm BL, alarm BL's second end ground connection, resistance R15's second end is connected emitting diode LED 1's positive pole, emitting diode LED 1's negative pole passes through electric capacity C19 ground connection.
The utility model discloses a theory of operation and beneficial effect do:
the utility model discloses in, gather the charge-discharge state of electric capacity in work through electric capacity voltage acquisition circuit, because various signal safety control circuit centralized power supply in the railway transportation command system, resistance among each signal safety control circuit, electric capacity composite member is mutual not isolated, in order to avoid producing signal mutual interference at the in-process of gathering transmission electric capacity charge-discharge state, therefore, keep apart electric capacity voltage acquisition circuit through opto-coupler U4, the acquisition signal after keeping apart sends to the main control unit through keeping apart output circuit and handles, then send to monitor terminal through the information after wireless communication unit will handling, envelope curve is protected in monitor terminal according to electric capacity charge-discharge voltage's change node generation, envelope curve with the electric capacity that the electric capacity was normally worked when comparing the envelope curve of generation and compare, convert into electric capacity value with contrast data, when comparing the error and being greater than the settlement standard, monitor terminal's staff will receive alarm signal. Wherein the power supply circuit provides operating voltages for the respective circuit units.
The capacitance capacity variation is measured by monitoring the charging and discharging envelope curves of the capacitor in the railway signal capacitance resistance box on line and comparing the envelope curve obtained by real-time detection with the envelope curve of the capacitor in normal working. And when the measured and calculated capacity value exceeds a set standard value, alarm information is output. Therefore, the abnormal change trend of the railway signal resistance-capacitance box can be found in time, and faults are prevented.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a schematic block diagram of the present invention;
fig. 2 is a circuit diagram of the capacitor voltage collecting circuit and the isolation output circuit of the present invention;
fig. 3 is a circuit diagram of a first power circuit of the present invention;
fig. 4 is a circuit diagram of the alarm circuit of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive work, are related to the scope of the present invention.
Example 1
As shown in fig. 1-2, this embodiment provides an on-line monitoring device for a railway signal resistance-capacitance box, which includes a main control unit, a power supply circuit, a capacitance voltage acquisition circuit, an optical coupler U4, an isolation output circuit and a wireless communication unit, wherein the power supply circuit and the isolation output circuit are both connected to the main control unit, the main control unit communicates with a monitoring terminal via the wireless communication unit, the optical coupler U4 is used for isolating the capacitance voltage acquisition circuit and the isolation output circuit, an input end of the capacitance voltage acquisition circuit is used for acquiring capacitance voltage in the railway signal resistance-capacitance box, an output end of the capacitance voltage acquisition circuit is connected to an input end of the optical coupler U4, an output end of the optical coupler U4 is connected to an input end of the isolation output circuit, the main control unit is connected to the isolation output circuit output, electric capacity voltage acquisition circuit includes resistance R11, zener diode VS1, U3 is put to electric capacity C15 and fortune, U3 is put to fortune inverting input end through resistance R11 connection resistance appearance box in the positive pole of electric capacity, the negative pole ground connection of electric capacity in the resistance appearance box, U3's in-phase input end ground is put to fortune, U3's inverting input end is put to fortune is connected to zener diode VS 1's negative pole, U3's in-phase input end is put to fortune is connected to zener diode VS 1's positive pole, U3's inverting input end is put to fortune is connected through electric capacity C15 connection fortune to the output of fortune, U3's output is put to fortune through resistance R12 connection opto-coupler U4's first input, 5V power is connected to opto-coupler U4's second input end.
The railway signal resistance and capacity box plays an important role in a railway signal control circuit in a railway transportation command system, and when the railway signal resistance and capacity box is abnormal while working, the normal operation of a train is influenced.
In this embodiment, the capacitance capacity variation is measured by monitoring the charging and discharging envelope curves of the capacitor in the railway signal capacitance-resistance box on line and comparing the envelope curve obtained by real-time detection with the envelope curve of the capacitor in normal operation. And when the measured and calculated capacity value exceeds a set standard value, alarm information is output. Therefore, the abnormal change trend of the railway signal resistance-capacitance box can be found in time, and faults are prevented.
The charging and discharging state of the capacitor in work is acquired through a capacitor voltage acquisition circuit, various signal safety control circuits in a railway transportation command system are supplied with power in a centralized mode, resistors and capacitor combination elements in the signal safety control circuits are not isolated from each other, and in order to avoid mutual interference of signals generated in the process of acquiring and transmitting the charging and discharging state of the capacitor, the capacitor voltage acquisition circuit is isolated through an optocoupler U4, the isolated acquisition signal is transmitted to a main control unit through an isolation output circuit, then the main control unit transmits processed information to a monitoring terminal through a wireless communication unit, the monitoring terminal generates a protection envelope curve according to the change node of the charging and discharging voltage of the capacitor, the generated envelope curve is compared with the envelope curve of the capacitor in normal work, compared data is converted into a capacitor capacity value, and when the comparison error is larger than a set standard, a worker of the monitoring terminal receives an alarm signal. Wherein the power supply circuit provides operating voltages for the respective circuit units.
It should be noted that the main control unit may select a general-purpose single chip, a DSP, an ARM, and other control chips, and in this embodiment, a 32-bit floating-point DSP processor TMS320F28335 is specifically adopted.
As shown in fig. 2, the capacitor C is a measured capacitor, charge and discharge of the capacitor C are transmitted to the inverting input terminal of the operational amplifier U3 through the resistor R11, the operational amplifier U3 forms an integrating circuit, the output voltage is proportional to the amplitude and duration of the input signal, the zener diode VS1 plays a role in protection, and the output signal of the operational amplifier U3 is connected to the input terminal of the optocoupler U4.
As shown in fig. 2, isolation output circuit includes that fortune is put U5 in this embodiment, resistance R13, electric capacity C16 and resistance R14, the first output of opto-coupler U4 is connected to fortune inverting input that puts U5, the second output of opto-coupler U4 is connected to fortune noninverting input that U5 was put to fortune, fortune is put U5's noninverting input ground connection, fortune is put U5's output and is connected fortune inverting input that puts U5 through resistance R13, fortune is put U5's output and is connected fortune inverting input that puts U5 through electric capacity C16, fortune is put U5's output and is passed through resistance R14 and connect the main control unit.
In this embodiment, the output of opto-coupler U4 is connected keep apart output circuit's input, after opto-coupler U4 keeps apart, and the signal of opto-coupler U4 preceding stage and opto-coupler U4 back level can not mutual interference, and U5 is put in fortune and is constituted integrating circuit equally, and the acquisition signal of electric capacity is handled through the integrating circuit that U5 constitutes and is sent to the main control unit after fortune.
As shown in fig. 3, the power supply circuit in this embodiment includes a first power supply circuit and a second power supply circuit, the first power supply circuit includes a power converter U1, a zener diode D1, a resistor R4, a resistor R5 and an inductor L1, an anode of the zener diode D1 is connected to a dc power supply in the resistor-capacitor box, a cathode of the zener diode D1 is connected to a power input terminal of the power converter U1, a control terminal of the power converter U1 is connected to a cathode of the zener diode D1 through the resistor R4, the control terminal of the power converter U1 is grounded through the resistor R5, an output terminal of the power converter U1 outputs 5V power through the inductor L1, circuit structures of the first power supply circuit and the second power supply circuit are the same, and the first power supply circuit is used for outputting 3.3V power.
In order to avoid interference to other control circuits in the railway transportation command system when the embodiment is in operation, therefore, the on-line monitoring device of the capacitance-resistance box adopts an independent power supply, and simultaneously, in order to achieve the purpose of signal isolation, the front stage and the rear stage of the optocoupler U4 respectively adopt different power supply voltages and different grounding ends, the power supply circuit comprises a first power supply circuit and a second power supply circuit, the input of the first power supply circuit and the input of the second power supply circuit are direct-current power supplies, wherein the first power supply circuit outputs 5V voltage, and the second power supply circuit outputs 3.3V voltage.
In the first power supply circuit, the power converter U1 can output a stable 5V voltage, and the accuracy of the output voltage of the power converter U1 is adjusted by adjusting the resistances of the resistor R2 and the resistor R3. The second power supply circuit is the same.
As shown in fig. 4, in this embodiment, the alarm circuit further includes an alarm circuit, the alarm circuit includes a capacitor C18, a varistor RP1, an operational amplifier U6, a resistor R15, a capacitor C20, an alarm BL, a light emitting diode LED1, and a capacitor C19, an inverting input terminal of the operational amplifier U6 is connected to a sliding terminal of the varistor RP1, a first terminal of the varistor RP1 is connected to the main control unit through the capacitor C18, a second terminal of the varistor RP1 is grounded, a non-inverting input terminal of the operational amplifier U6 is grounded, an output terminal of the operational amplifier U6 is connected to a first terminal of the resistor R15, a second terminal of the resistor R15 is connected to a first terminal of the alarm BL through the capacitor C20, a second terminal of the alarm BL is grounded, a second terminal of the resistor R15 is connected to an anode of the light emitting diode LED1, and a cathode of the light emitting diode LED1 is grounded through the capacitor C19.
In the embodiment, when the railway signal resistance-capacitance box normally operates, the main control unit outputs a low level signal to the input end of the alarm circuit, the alarm circuit does not act, when the charging and discharging state of the capacitor in the railway signal resistance-capacitance box is abnormal, the main control unit outputs a high level signal to the input end of the alarm circuit, the operational amplifier U6 outputs a high level, the alarm BL and the light emitting diode LED1 are simultaneously connected, and when a field worker receives the alarm signal, the field worker can conveniently take corresponding maintenance measures to ensure the normal operation of the train.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The utility model provides a railway signal resistance-capacitance box on-line monitoring device, its characterized in that, including main control unit, power supply circuit, capacitance voltage acquisition circuit, opto-coupler U4, isolation output circuit and wireless communication unit, power supply circuit with isolation output circuit all with the main control unit is connected, the main control unit with the help of wireless communication unit communicates with monitor terminal, opto-coupler U4 is used for keeping apart capacitance voltage acquisition circuit and isolation output circuit, capacitance voltage acquisition circuit's input is used for gathering the capacitance voltage in the railway signal resistance-capacitance box, the output that capacitance voltage was gathered is connected the input of opto-coupler U4, the output of opto-coupler U4 is connected the input of isolation output circuit, isolation output circuit output connects the main control unit, capacitance voltage acquisition circuit includes resistance R11, zener diode VS1, electric capacity C15 and operational amplifier U3, the inverting input of operational amplifier U3 passes through the positive pole of electric capacity in the resistance-capacitance box, the negative pole of electric capacity in the resistance-capacitance box is grounded, the in-phase input of operational amplifier U3 is grounded, the negative pole of the operational amplifier U3 is connected the inverting input of the operational amplifier U3 through the input of the second inverting phase of operational amplifier U3, the output of operational amplifier U3 is connected the inverting phase of operational amplifier U3 through the input of the output of the operational amplifier U3, the inverting phase of operational amplifier U3, the operational amplifier U3 is connected the inverting phase of the operational amplifier U3 is connected the output of the operational amplifier U3, the operational amplifier U3.
2. The device for on-line monitoring of the railway signal resistance-capacitance box is characterized in that the isolation output circuit comprises an operational amplifier U5, a resistor R13, a capacitor C16 and a resistor R14, wherein an inverting input end of the operational amplifier U5 is connected with a first output end of the optocoupler U4, a non-inverting input end of the operational amplifier U5 is connected with a second output end of the optocoupler U4, a non-inverting input end of the operational amplifier U5 is grounded, an output end of the operational amplifier U5 is connected with an inverting input end of the operational amplifier U5 through the resistor R13, an output end of the operational amplifier U5 is connected with an inverting input end of the operational amplifier U5 through the capacitor C16, and an output end of the operational amplifier U5 is connected with the main control unit through the resistor R14.
3. The on-line monitoring device for the railway signal resistance-capacitance box according to claim 1, wherein the power supply circuit comprises a first power supply circuit and a second power supply circuit, the first power supply circuit comprises a power converter U1, a voltage stabilizing diode D1, a resistor R4, a resistor R5 and an inductor L1, an anode of the voltage stabilizing diode D1 is connected with a direct current power supply in the resistance-capacitance box, a cathode of the voltage stabilizing diode D1 is connected with a power input end of the power converter U1, a control end of the power converter U1 is connected with a cathode of the voltage stabilizing diode D1 through the resistor R4, a control end of the power converter U1 is grounded through the resistor R5, an output end of the power converter U1 outputs a 5V power supply through the inductor L1, the first power supply circuit and the second power supply circuit have the same circuit structure, and the first power supply circuit is used for outputting a 3.3V power supply.
4. The on-line monitoring device for the railway signal resistance-capacitance box is characterized by further comprising an alarm circuit, wherein the alarm circuit comprises a capacitor C18, a rheostat RP1, an operational amplifier U6, a resistor R15, a capacitor C20, an alarm BL, a light emitting diode LED1 and a capacitor C19, an inverting input end of the operational amplifier U6 is connected with a sliding end of the rheostat RP1, a first end of the rheostat RP1 is connected with the main control unit through the capacitor C18, a second end of the rheostat RP1 is grounded, a non-inverting input end of the operational amplifier U6 is grounded, an output end of the operational amplifier U6 is connected with a first end of the resistor R15, a second end of the resistor R15 is connected with a first end of the alarm BL through the capacitor C20, a second end of the alarm BL is grounded, a second end of the resistor R15 is connected with an anode of the light emitting diode LED1, and a cathode of the light emitting diode LED1 is grounded through the capacitor C19.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222117136.3U CN218767900U (en) | 2022-08-11 | 2022-08-11 | Railway signal resistance-capacitance box on-line monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222117136.3U CN218767900U (en) | 2022-08-11 | 2022-08-11 | Railway signal resistance-capacitance box on-line monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218767900U true CN218767900U (en) | 2023-03-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222117136.3U Active CN218767900U (en) | 2022-08-11 | 2022-08-11 | Railway signal resistance-capacitance box on-line monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218767900U (en) |
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2022
- 2022-08-11 CN CN202222117136.3U patent/CN218767900U/en active Active
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