EP-4495713-B1 - DYNAMIC COLLECTION CIRCUIT AND TRANSPONDER TRANSMISSION SYSTEM

EP4495713B1EP 4495713 B1EP4495713 B1EP 4495713B1EP-4495713-B1

Inventors

LI, QUN
CHEN, GUANG
CHENG, Bangfeng

Dates

Publication Date: 20260506
Application Date: 20231016

Claims (11)

A dynamic acquisition circuit comprising: a plurality of sampling terminals in corresponding electrical connection with a plurality of contacts of an external relay, wherein the sampling terminal is used for receiving a contact signal of the external relay; a first controller and a second controller, wherein the first controller comprises a plurality of first output terminals and a plurality of first receiving terminals, the first output terminal is used for outputting a first control signal, the second controller comprises a plurality of second output terminals, a plurality of third output terminals, and a plurality of second receiving terminals, the second output terminal is used for outputting a second control signal, and the third output terminal is used for outputting a third control signal; a plurality of acquisition circuits, a positive input terminal of each of the acquisition circuits being electrically connected with each of the sampling terminals in one-to-one correspondence respectively, a negative input terminal of each of the acquisition circuits being grounded, a first control terminal of each of the acquisition circuits being electrically connected with each of the first output terminals in one-to-one correspondence respectively, a second control terminal of each of the acquisition circuits being electrically connected with each of the second output terminals in one-to-one correspondence respectively, a third control terminal of each of the acquisition circuits being electrically connected with each of the third output terminals in one-to-one correspondence respectively, a sampling output terminal of each of the acquisition circuits being electrically connected with each of the first receiving terminals in one-to-one correspondence respectively, a sampling output terminals of each of the acquisition circuits being also electrically connected with each of the second receiving terminals in one-to-one correspondence respectively; the acquisition circuit is used for providing a sampling signal to the first controller and the second controller, respectively, according to the contact signal, the first control signal, the second control signal, and the third control signal.
The dynamic acquisition circuit of claim 1, characterized in that the acquisition circuit comprises an acquisition pulse logic circuit and a photoelectric isolation sampling circuit; the acquisition pulse logic circuit comprises a control output terminal, the first control terminal, the second control terminal and the third control terminal; the control output terminal is electrically connected with a sampling control terminal; the first control terminal is electrically connected with the first output terminal, the second control terminal is electrically connected with the second output terminal, and the third control terminal is electrically connected with the third output terminal; the acquisition pulse logic circuit is used for outputting a sampling control signal to the photoelectric isolation sampling circuit according to the first control signal, the second control signal, and the third control signal; the photoelectric isolation sampling circuit comprises the sampling control terminal, the positive input terminal, the negative input terminal, and the sampling output terminal; the sampling control terminal is electrically connected with the control output terminal; the positive input terminal is electrically connected with the sampling terminal; the sampling output terminal is electrically connected with the first receiving terminal and the second receiving terminal respectively; the photoelectric isolation sampling circuit is used for outputting the sampling signal to the first controller and the second controller according to the sampling control signal and the contact signal of the external relay acquired at the acquisition terminal.
The dynamic acquisition circuit of claim 2, characterized in that the acquisition pulse logic circuit further comprises an XOR gate, an AND gate, and a first resistance; a first terminal of the XOR gate is electrically connected with the second control terminal; a second terminal of the XOR gate is electrically connected with the third control terminal through the first resistance; a first terminal of the AND gate is electrically connected with the first control terminal; a second terminal of the AND gate is electrically connected with an output terminal of the XOR gate, and an output terminal of the AND gate is electrically connected with the control output terminal.
The dynamic acquisition circuit of claim 2, characterized in that the photoelectric isolation sampling circuit further comprises a threshold circuit, an optocoupler control circuit, an optocoupler acquisition circuit; an input terminal of the threshold circuit is electrically connected with the positive input terminal, and an output terminal of the threshold circuit is electrically connected with a first terminal of the optocoupler acquisition circuit; the threshold circuit is used for providing a first electrical signal to the optocoupler acquisition circuit according to the contact signal; an input terminal of the optocoupler control circuit is electrically connected with the sampling control terminal, and an output terminal of the optocoupler control circuit is electrically connected with a second terminal of the optocoupler acquisition circuit; the optocoupler control circuit is used for providing a second electrical signal to the optocoupler acquisition circuit according to the sampling control signal; an output terminal of the optocoupler acquisition circuit is electrically connected with the sampling output terminal; the optocoupler acquisition circuit is used for outputting the sampling signal according to the first electrical signal and the second electrical signal.
The dynamic acquisition circuit of claim 4, characterized in that the optocoupler control circuit comprises a first optocoupler switch and a second resistance; the first optocoupler switch comprises a first photosensitive element and a first light emitting diode; a first terminal of the second resistance is electrically connected with a power supply, a second terminal of the second resistance is electrically connected with an anode of the first light emitting diode, a cathode of the first light emitting diode is electrically connected with the sampling control terminal; a first terminal of the first photosensitive element is electrically connected with the second terminal of the optocoupler acquisition circuit, and the second terminal of the first photosensitive element is grounded.
The dynamic acquisition circuit according to claim 4, characterized in that the optocoupler acquisition circuit comprises a second optocoupler switch and a third resistance; the second optocoupler switch comprises a second photosensitive element and a second light emitting diode; an anode of the second light emitting diode is electrically connected with the first terminal of the optocoupler acquisition circuit, a cathode of the second light emitting diode is electrically connected with the second terminal of the optocoupler acquisition circuit; a first terminal of the second photosensitive element is electrically connected with a power supply, a second terminal of the second photosensitive element is electrically connected with a ground terminal, an output terminal of the second photosensitive element is electrically connected with the sampling output terminal; a first terminal of the third resistance is electrically connected with the power supply, and a second terminal of the third resistance is coupled to an output terminal of the second photosensitive element.
The dynamic acquisition circuit of claim 4, characterized in that the threshold circuit comprises a transient suppression diode; an anode of the transient suppression diode is electrically connected with the first terminal of the optocoupler acquisition circuit, and a cathode of the transient suppression diode is electrically connected with the positive input terminal.
The dynamic acquisition circuit of claim 4, characterized in that the photoelectric isolation sampling circuit further comprises a protection circuit; a first terminal of the protection circuit is electrically connected with the positive input terminal, and a second terminal of the protection circuit is electrically connected with the negative input terminal.
A transponder transmission system, characterized in that the transponder transmission system comprises: a processing board, an output board, a transponder, and the dynamic acquisition circuit of any of claims 1-8: the processing board comprises a first processor and a second processor; the first processor is connected with the first controller in the dynamic acquisition circuit; the first processor is used for providing sampling command information to the first controller, receiving sampling information fed back by the first controller, and selecting an output message according to the sampling information fed back by the first controller; the second processor is connected with the second controller in the dynamic acquisition circuit; the second processor is used for providing sampling command information to the second controller, receiving sampling information fed back by the second controller, and selecting an output message according to the sampling information fed back by the second controller; the output board is electrically connected with the processing board and the transponder, respectively; the output board is used for providing, after encoding the message output by the processing board, the encoded message to the transponder; the transponder is used for outputting an electromagnetic signal according to the input encoded information.
The transponder transmission system of claim 9, characterized in that the output board is further used for feeding back the output message to the processing board as a feedback message; the processing board is further used for comparing the feedback message with the message output by the processing board, and determining a current message output status of the output board according to the comparison.
The transponder transmission system of claim 9, characterized in further comprising a monitoring module; the monitoring module is electrically connected with the dynamic acquisition circuit, the processing board and the output board respectively; the monitoring module is used for recording running status information of the dynamic acquisition circuit, the processing board and the output board.

Description

TECHNICAL FIELD The present invention relates to the technical field of signal acquisition, and in particular, to a dynamic acquisition circuit and transponder transmission system. BACKGROUND In the operation of rail traffic, the safety and reliability of the system is extremely important, especially with the rapid development of high-speed railway, the reliability of signal equipment will directly affect the safety of rail traffic, so the safety and reliability control of signal equipment is of great importance. In rail traffic, the state of signal can be judged by acquisition the contact state of relay, so as to ensure safe driving. There is only one control terminal in the existing acquisition circuit. When the processor or the controller that inputs the control signal fails, the output electrical signal according to the signal of the control terminal will lead to wrong state judgment, which will not guarantee the safety of the rail traffic system. Therefore, how to improve the accuracy of contact signal acquisition has become an urgent technical problem to be solved. Prior art documents related to the present invention are CN105824273A and CN214451017U. SUMMARY The present invention provides a dynamic acquisition circuit and a transponder transmission system to improve the accuracy of the sampling signal output by the dynamic acquisition circuit. In a first aspect, the present invention provides a dynamic acquisition circuit comprising: a plurality of sampling terminals in corresponding electrical connection with a plurality of contacts of an external relay, wherein the sampling terminal is used for receiving a contact signal of the external relay;a first controller and a second controller, wherein the first controller comprises a plurality of first output terminals and a plurality of first receiving terminals, the first output terminal is used for outputting a first control signal, the second controller comprises a plurality of second output terminals, a plurality of third output terminals, and a plurality of second receiving terminals, the second output terminal is used for outputting a second control signal, and the third output terminal is used for outputting a third control signal;a plurality of acquisition circuits, wherein a positive input terminal of each of the acquisition circuits being electrically connected with each of the sampling terminals in one-to-one correspondence respectively, a negative input terminal of each of the acquisition circuits being grounded, a first control terminal of each of the acquisition circuits being electrically connected with each of the first output terminals in one-to-one correspondence respectively, a second control terminal of each of the acquisition circuits being electrically connected with each of the second output terminals in one-to-one correspondence respectively, a third control terminal of each of the acquisition circuits being electrically connected with each of the third output terminals in one-to-one correspondence respectively, a sampling output terminal of each of the acquisition circuits being electrically connected with each of the first receiving terminals in one-to-one correspondence respectively, a sampling output terminals of each of the acquisition circuits being also electrically connected with each of the second receiving terminals in one-to-one correspondence respectively; the acquisition circuit is used for providing a sampling signal to the first controller and the second controller, respectively, according to the contact signal, the first control signal, the second control signal, and the third control signal. Optionally, the acquisition circuit comprises an acquisition pulse logic circuit and a photoelectric isolation sampling circuit; the acquisition pulse logic circuit comprises a control output terminal, the first control terminal, the second control terminal and the third control terminal; the control output terminal is electrically connected with a sampling control terminal; the first control terminal is electrically connected with the first output terminal, the second control terminal is electrically connected with the second output terminal, and the third control terminal is electrically connected with the third output terminal; the acquisition pulse logic circuit is used for outputting a sampling control signal to the photoelectric isolation sampling circuit according to the first control signal, the second control signal, and the third control signal;the photoelectric isolation sampling circuit comprises the sampling control terminal, the positive input terminal, the negative input terminal, and the sampling output terminal; the sampling control terminal is electrically connected with the control output terminal; the positive input terminal is electrically connected with the sampling terminal; the sampling output terminal is electrically connected with the first receiving terminal and the second receiving terminal respectiv