CN214755748U - Device for supplying power to railway cable acquisition and transmission unit - Google Patents
Device for supplying power to railway cable acquisition and transmission unit Download PDFInfo
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- CN214755748U CN214755748U CN202120365235.6U CN202120365235U CN214755748U CN 214755748 U CN214755748 U CN 214755748U CN 202120365235 U CN202120365235 U CN 202120365235U CN 214755748 U CN214755748 U CN 214755748U
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Abstract
The utility model relates to a device for supplying power for a railway cable acquisition and transmission unit, which comprises a current transformer, a rectification and voltage stabilization module, a control module and a super capacitor; the current transformer is sleeved on the power supply cable, the output end of the current transformer is electrically connected with the input end of the rectification voltage stabilizing module, and the input end of the super capacitor is electrically connected with the output end of the rectification voltage stabilizing module; the output end of the super capacitor is electrically connected with the power supply end of the acquisition and transmission unit; the control module is connected in the super capacitor and the acquisition and transmission unit and used for controlling the charging and discharging of the super capacitor. The utility model discloses a device for being power supply of transmission unit is gathered to railway cable charges for super capacitor through the electric current in the response power supply cable, and super capacitor gives the power supply of gathering the transmission unit again, because there is the electric current all the time in the power supply cable, can realize charging for 24 hours, keeps super capacitor electrified, realizes gathering the transmission unit's data timesharing transmission.
Description
Technical Field
The utility model relates to a railway power equipment field especially relates to a device that is used for gathering transmission unit power supply for railway cable.
Background
The temperature, electric current, voltage isoparametric of head need be measured and the transmission in the middle of the cable along the railway, but the cable is all installed in advance and is accomplished, can't directly get the electricity from the cable, in order to measure multiple data such as temperature, voltage, electric current to through internet of things, with data display platform, must solve and gather transmission unit power supply problem.
At present, the mode of providing power for the acquisition and transmission unit is mainly powered by a battery, and can also be realized by a power supply mode of charging the battery and a solar panel.
However, only a battery power supply mode is used, the battery needs to be replaced periodically, and the workload is large; the power supply mode of charging by the battery and the solar panel can avoid frequent replacement of the battery, but has higher requirements on the installation environment, and the railway line has strict requirements on external equipment, so that the battery and the solar panel type power supply cannot be realized in some areas.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem, the utility model provides a device for gathering transmission unit power supply for railway cable charges for super capacitor through electric current among the response power supply cable, and super capacitor gives the power supply of gathering transmission unit again, because there is the electric current all the time in the power supply cable, can realize charging for 24 hours, keeps super capacitor electrified, realizes gathering transmission unit's data timesharing transmission.
The utility model provides a technical scheme that its technical problem adopted is: a device for supplying power to a railway cable acquisition and transmission unit comprises a current transformer, a rectification and voltage stabilization module, a control module and a super capacitor; the current transformer is sleeved on the power supply cable, the output end of the current transformer is electrically connected with the input end of the rectification voltage stabilizing module, and the input end of the super capacitor is electrically connected with the output end of the rectification voltage stabilizing module; the output end of the super capacitor is electrically connected with the power supply end of the acquisition and transmission unit; the control module is connected in the super capacitor and the acquisition and transmission unit and used for controlling the charging and discharging of the super capacitor.
Furthermore, a comparator and a switching tube are adopted in a circuit of the control module; the comparator is configured to: setting a first comparison voltage value for judging whether the super capacitor is fully charged or not, and setting a first comparison voltage value limited under discharge of the super capacitor; is further configured to: when the voltage value of the super capacitor is larger than the first comparison voltage value, controlling the switching tube to be conducted, and supplying power to the super capacitor; and when the voltage value of the super capacitor is smaller than the second comparison voltage value, the switching tube is controlled to be switched off, and the super capacitor is charged.
Further, the output end of the rectifying and voltage stabilizing module is also used for supplying power to the comparator.
Furthermore, a circuit of the rectifying and voltage-stabilizing module adopts a rectifier bridge, a voltage-stabilizing diode and a filter capacitor; the input end of the rectifier bridge is electrically connected with the output end of the current transformer; the current output by the current transformer is converted into direct current voltage after being processed by the rectifier bridge, the voltage is stabilized by the voltage stabilizing diode, and then a stable direct current voltage signal is output by filtering wave capacitor for charging the super capacitor.
Furthermore, the comparator at least has a non-inverting input terminal, an output terminal and a reference voltage terminal; the circuit of the control module is at least provided with a super capacitor interface, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a capacitor and an acquisition and transmission unit interface; the first end of the super capacitor interface is electrically connected with the first end of the acquisition and transmission unit interface; the second end of the super capacitor interface is grounded, and the second end of the acquisition and transmission unit interface is connected with the D pole of the switching tube; the S pole of the switching tube is grounded; the first end of the first resistor is electrically connected with the first end of the super capacitor interface, the second end of the first resistor is electrically connected with the first end of the fourth resistor, and the second end of the fourth resistor is grounded; the first end of the second resistor is electrically connected with the first end of the super capacitor interface, and the second end of the second resistor is electrically connected with the first end of the third resistor; the second end of the third resistor is electrically connected with the first end of the fourth resistor; the in-phase input end of the comparator is electrically connected with the first end of the fourth resistor, the inverting input end of the comparator is electrically connected with the first end of the fifth resistor, the second end of the fifth resistor is electrically connected with the reference voltage end of the comparator, the output end of the comparator is respectively electrically connected with the G pole of the switch tube and the first end of the third resistor, a first comparison voltage value is provided for the comparator through the voltage division of the first resistor and the fourth resistor, and a second comparison voltage value is provided for the comparator through the voltage division of the second resistor, the third resistor and the fourth resistor.
Furthermore, the electric energy stored by the super capacitor needs to meet the requirement of power supply of data transmission of the acquisition and transmission unit at least once.
The utility model has the advantages that: the utility model discloses a device for being supplied power for railway cable collection transmission unit, the electric current through the induction power supply cable charges for super capacitor, and super capacitor supplies power for collection transmission unit again, because there is the electric current all the time in the power supply cable, can realize charging for 24 hours, keeps super capacitor electrified, realizes the data timesharing transmission of collection transmission unit; the device is characterized in that the railway power supply cable generally has only a small current of about 5A, the device charges the super capacitor by sensing the small current in the power supply cable through the current transformer, the super capacitor can supply power to the acquisition and transmission unit in a time-sharing manner, and the acquisition and transmission unit at least completes data transmission once when supplying power once, so that the data transmission requirements of the acquisition and transmission unit of the railway cable are met; the adopted control module can avoid the overcharge and the over-discharge of the super capacitor by using a low-power consumption device in a circuit switching mode; the device is easy to install, does not need to be replaced regularly like a battery, does not need a mounting environment with higher requirements, and has good applicability and strong practicability.
Drawings
FIG. 1 is a schematic diagram of an apparatus for supplying power to a railway cable acquisition and transmission unit according to an embodiment;
fig. 2 is a schematic circuit diagram of a rectifying and voltage-stabilizing module of an apparatus for supplying power to a railway cable acquisition and transmission unit according to the present embodiment;
fig. 3 is a schematic circuit diagram of a control module of an apparatus for supplying power to a railway cable collection and transmission unit according to the embodiment.
Detailed Description
In order to deepen the understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and embodiments, which are only used for explaining the present invention and are not limited to the protection scope of the present invention.
Examples
As shown in fig. 1 to 3, the present embodiment provides an apparatus for supplying power to a railway cable acquisition and transmission unit, which includes a current transformer, a rectifying and voltage-stabilizing module, a control module, and a super capacitor; the current transformer is sleeved on the power supply cable, the output end of the current transformer is electrically connected with the input end of the rectification voltage stabilizing module, and the input end of the super capacitor is electrically connected with the output end of the rectification voltage stabilizing module; the output end of the super capacitor is electrically connected with the power supply end of the acquisition and transmission unit; the control module is connected in the super capacitor and the acquisition and transmission unit and is used for controlling the charging and discharging of the super capacitor; the current transformer adopts a bayonet current transformer, is directly sleeved on a power supply cable, senses the current (about 5A generally) in the cable, and outputs a small current on the secondary side of the current transformer, which is about 1mA approximately; the device can charge the super capacitor by utilizing the small current of the power supply cable through the induction of the current transformer, and then supplies power for the acquisition and transmission unit in a time-sharing manner.
In the device for supplying power to the railway cable acquisition and transmission unit of the embodiment, a circuit of the control module adopts a comparator IC2 and a switching tube Q1; the comparator IC2 is configured to: setting a first comparison voltage value for judging whether the super capacitor is fully charged or not, and setting a first comparison voltage value limited under discharge of the super capacitor; is further configured to: when the voltage value of the super capacitor is larger than the first comparison voltage value, controlling the switching tube to be conducted, and supplying power to the super capacitor; and when the voltage value of the super capacitor is smaller than the second comparison voltage value, the switching tube is controlled to be switched off, and the super capacitor is charged.
In the device for supplying power to the railway cable acquisition and transmission unit of the embodiment, the output end of the rectifying and voltage-stabilizing module is also used for supplying power to the comparator IC 2.
In the device for supplying power to the railway cable acquisition and transmission unit of the embodiment, a circuit of a rectifying and voltage-stabilizing module adopts a rectifier bridge IC1, a voltage-stabilizing diode D1 and a filter capacitor EC 1; the input end of the rectifier bridge IC1 is electrically connected with the output end of the current transformer; the current output by the current transformer is converted into direct current voltage after being processed by a rectifier bridge IC1, the direct current voltage is stabilized by a voltage stabilizing diode D1, and then a stable direct current voltage signal is filtered and output by a filter wave capacitor EC1 and used for charging the super capacitor; the interface J1 is connected with the secondary side of the current transformer, and the output end of the interface J1 is connected with the input end of the rectifier bridge IC 1; and the circuit of the rectification voltage-stabilizing module is used for converting the secondary side current of the current transformer and transmitting the converted secondary side current to the circuit of the rectification voltage-stabilizing module to stabilize the voltage.
IN the apparatus for supplying power to the railway cable acquisition and transmission unit of the present embodiment, the comparator IC2 further has at least a non-inverting input terminal + IN, an inverting input terminal-IN, an output terminal OUT, and a reference voltage terminal REF; the circuit of the control module at least comprises a super capacitor interface CJDR, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a capacitor C1 and an acquisition and transmission unit interface CJDY; the first end of the super capacitor interface CJDR is electrically connected with the first end of the acquisition and transmission unit interface CJDY; the second end of the super capacitor interface CJDR is grounded, and the second end of the acquisition transmission unit interface CJDY is connected with a pin D of a switch tube Q1; the S pin of the switching tube Q1 is grounded; a first end of the first resistor R1 is electrically connected with a first end of the super capacitor interface CJDR, a second end of the first resistor R1 is electrically connected with a first end of the fourth resistor R4, and a second end of the fourth resistor R4 is grounded; a first end of the second resistor R2 is electrically connected with a first end of the super capacitor interface CJDR, and a second end of the second resistor R2 is electrically connected with a first end of the third resistor R3; a second end of the third resistor R3 is electrically connected with a first end of the fourth resistor R4; a non-inverting input terminal + IN of the comparator IC2 is electrically connected to a first terminal of the fourth resistor R4, an inverting input terminal-IN of the comparator IC2 is electrically connected to a first terminal of the fifth resistor R5, a second terminal of the fifth resistor R5 is electrically connected to a reference voltage terminal REF of the comparator IC2, an output terminal OUT of the comparator IC2 is electrically connected to the G pin of the switching tube Q1 and the first terminal of the third resistor R3, the comparator IC2 is provided with a first comparison voltage value through voltage division of the first resistor R1 and the fourth resistor R4, and the comparator IC2 is provided with a second comparison voltage value through voltage division of the second resistor R2, the third resistor R3 and the fourth resistor R4.
In the device for supplying power to the railway cable acquisition and transmission unit, the control module is used for monitoring the electric quantity of the super capacitor; after the super capacitor is fully charged, the switch tube is started to discharge, the electric quantity stored by the super capacitor can be used for collecting data transmitted by the transmission unit at least once for supplying power, and then the switch tube is turned off. And then the super capacitor is charged, so that the next power supply is completed. The main working process of the control module is as follows: the super capacitor interface CJDR is connected with a super capacitor, a power supply which is rectified and stabilized provides the super capacitor for charging, meanwhile, the comparator IC2 is powered, and the output voltage of the super capacitor supplies power for the acquisition transmission unit through the acquisition transmission unit interface CJDY. A first comparison voltage value for judging whether the super capacitor is fully charged or not is provided by voltage division of the first resistor R1 and the second resistor R4, and a second comparison voltage value limited under discharge of the super capacitor is provided by voltage division of the second resistor R2, the third resistor R3 and the fourth resistor R4; therefore, the electric energy stored by the super capacitor is controlled to meet the requirement of at least one time of data transmission and power supply of the acquisition and transmission unit, so that a proper super capacitor can be selected, and the super capacitor can be fully charged within a specified time. When the voltage value of the super capacitor is larger than the first comparison voltage value, the controlled switching tube is conducted, and the super capacitor supplies power to the acquisition and transmission unit; and when the voltage value of the super capacitor is smaller than the second comparison voltage value, the controlled switching tube is switched off, and the super capacitor is continuously charged.
In the device for supplying power to the railway cable acquisition and transmission unit of this embodiment, the electric energy stored in the super capacitor needs to satisfy the requirement of supplying power to the acquisition and transmission unit for transmitting data at least once.
According to the device for supplying power to the railway cable acquisition and transmission unit, the super capacitor is charged by sensing the current in the power supply cable, and then the super capacitor supplies power to the acquisition and transmission unit, and as the current is always in the power supply cable, 24-hour charging can be realized, the super capacitor is kept charged, and the time-sharing transmission of data of the acquisition and transmission unit is realized; the device is characterized in that the railway power supply cable generally has only a small current of about 5A, the device charges a super capacitor by sensing the small current of the power supply cable through a current transformer, the super capacitor can supply power to an acquisition and transmission unit in a time-sharing manner, and the acquisition and transmission unit at least completes data transmission once every time power is supplied, so that the data transmission requirements of the acquisition and transmission unit of the railway cable are met; the adopted control module can avoid the overcharge and the over-discharge of the super capacitor by using a low-power consumption device in a circuit switching mode; the device is easy to install, does not need to be replaced regularly like a battery, does not need a mounting environment with higher requirements, and has good applicability and strong practicability.
The above-mentioned embodiments should not limit the present invention in any way, and all the technical solutions obtained by adopting equivalent replacement or equivalent conversion fall within the protection scope of the present invention.
Claims (6)
1. A device for supplying power to a railway cable acquisition and transmission unit, characterized in that: the current transformer, the rectification and voltage stabilization module, the control module and the super capacitor are included; the current transformer is sleeved on the power supply cable, the output end of the current transformer is electrically connected with the input end of the rectification voltage stabilizing module, and the input end of the super capacitor is electrically connected with the output end of the rectification voltage stabilizing module; the output end of the super capacitor is electrically connected with the power supply end of the acquisition and transmission unit; the control module is connected in the super capacitor and the acquisition and transmission unit and used for controlling the charging and discharging of the super capacitor.
2. The apparatus of claim 1, wherein the power supply comprises: a comparator and a switching tube are adopted in a circuit of the control module; the comparator is configured to: setting a first comparison voltage value for judging whether the super capacitor is fully charged or not, and setting a first comparison voltage value limited under discharge of the super capacitor; is further configured to: when the voltage value of the super capacitor is larger than the first comparison voltage value, controlling the switching tube to be conducted, and supplying power to the super capacitor; and when the voltage value of the super capacitor is smaller than the second comparison voltage value, the switching tube is controlled to be switched off, and the super capacitor is charged.
3. An apparatus for powering a railway cable acquisition transmission unit according to claim 2, wherein: and the output end of the rectification voltage-stabilizing module is also used for supplying power to the comparator.
4. A device for powering a railway cable acquisition transmission unit according to claim 3, characterized in that: in the circuit of the rectification voltage-stabilizing module, a rectifier bridge, a voltage-stabilizing diode and a filter capacitor are adopted; the input end of the rectifier bridge is electrically connected with the output end of the current transformer; the current output by the current transformer is converted into direct current voltage after being processed by the rectifier bridge, the voltage is stabilized by the voltage stabilizing diode, and then a stable direct current voltage signal is output by filtering wave capacitor for charging the super capacitor.
5. A device for powering a railway cable acquisition transmission unit according to claim 3, characterized in that: the comparator at least comprises a non-inverting input end, an output end and a reference voltage end; the circuit of the control module is at least provided with a super capacitor interface, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a capacitor and an acquisition and transmission unit interface; the first end of the super capacitor interface is electrically connected with the first end of the acquisition and transmission unit interface; the second end of the super capacitor interface is grounded, and the second end of the acquisition and transmission unit interface is connected with the D pole of the switching tube; the S pole of the switching tube is grounded; the first end of the first resistor is electrically connected with the first end of the super capacitor interface, the second end of the first resistor is electrically connected with the first end of the fourth resistor, and the second end of the fourth resistor is grounded; the first end of the second resistor is electrically connected with the first end of the super capacitor interface, and the second end of the second resistor is electrically connected with the first end of the third resistor; the second end of the third resistor is electrically connected with the first end of the fourth resistor; the in-phase input end of the comparator is electrically connected with the first end of the fourth resistor, the inverting input end of the comparator is electrically connected with the first end of the fifth resistor, the second end of the fifth resistor is electrically connected with the reference voltage end of the comparator, the output end of the comparator is respectively electrically connected with the G pole of the switch tube and the first end of the third resistor, a first comparison voltage value is provided for the comparator through the voltage division of the first resistor and the fourth resistor, and a second comparison voltage value is provided for the comparator through the voltage division of the second resistor, the third resistor and the fourth resistor.
6. An apparatus for powering a railway cable acquisition and transmission unit according to any one of claims 1 to 5, characterized in that: the electric energy stored by the super capacitor needs to meet the power supply requirement of data transmission of the acquisition and transmission unit at least once.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120365235.6U CN214755748U (en) | 2021-02-09 | 2021-02-09 | Device for supplying power to railway cable acquisition and transmission unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120365235.6U CN214755748U (en) | 2021-02-09 | 2021-02-09 | Device for supplying power to railway cable acquisition and transmission unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214755748U true CN214755748U (en) | 2021-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120365235.6U Active CN214755748U (en) | 2021-02-09 | 2021-02-09 | Device for supplying power to railway cable acquisition and transmission unit |
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|---|---|
| CN (1) | CN214755748U (en) |
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2021
- 2021-02-09 CN CN202120365235.6U patent/CN214755748U/en active Active
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