CN-122004712-A - Endoscope system and fault detection method of endoscope

Abstract

The application discloses an endoscope system and a fault detection method of an endoscope, wherein the endoscope system comprises a detection module and a voltage division module, the detection module comprises a detection end, the output end of the voltage division module is connected to the detection end, and the input end is connected to the data line. When the data line is in an open circuit or a short circuit, the output end of the voltage division module can output different voltage division signals, and when the detection module receives the voltage division signals, the data line can be judged to be in the open circuit or the short circuit according to the size of the voltage division signals.

Inventors

• LIU MINGGUI
• FENG XINYU

Assignees

• 深圳市星辰海医疗科技有限公司

Dates

Publication Date

20260512

Application Date

20251226

Claims (10)

1. 1. An endoscope system, comprising: An image sensor for converting an optical image into an electrical signal; A data line; a plurality of power sources for powering the endoscope system; The endoscope imaging module is connected to the image sensor and used for receiving an electric signal sent by the image sensor, converting the electric signal into first data based on a preset communication protocol and outputting the first data through the data line; the endoscope host is used for receiving first data sent by the endoscope imaging module through the data wire, converting the first data into second data based on a preset communication protocol and outputting the second data; The detection module comprises a detection end, The first end of the voltage division module is connected to the first power supply, the second end of the voltage division module is connected to the ground, the output end of the voltage division module is connected to the detection end, and the input end of the voltage division module is connected to the data line; When the data line is in open circuit or short circuit, the output end of the voltage division module can output different voltage division signals; When the detection module receives the voltage division signal, the data line can be judged to be in an open circuit or a short circuit.
2. 2. The endoscopic system of claim 1, wherein the endoscope comprises a plurality of blades, The data line is a differential transmission data line, and the differential transmission data line comprises a first differential transmission data line and a second differential transmission data line; the detection end of the detection module comprises a first detection end and a second detection end; the voltage division module comprises a first voltage division module and a second voltage division module, wherein a first end of the first voltage division module is connected to the first power supply, a second end of the first voltage division module is connected to the ground, an output end of the first voltage division module is connected to the first detection end, and an input end of the first voltage division module is connected to the first differential transmission data line; The first end of the second voltage dividing module is connected to the first power supply, the second end of the second voltage dividing module is connected to the ground, the output end of the second voltage dividing module is connected to the second detection end, and the input end of the second voltage dividing module is connected to the second differential transmission data line; when the first differential transmission data line is in an open circuit or a short circuit, the voltage division output end of the first voltage division module outputs different first voltage division signals; The detection module receives the first voltage division signal and is used for judging whether the first differential transmission data line is in an open circuit or a short circuit, and the detection module receives the second voltage division signal and is used for judging whether the second differential transmission data line is in an open circuit or a short circuit.
3. 3. The endoscope system of claim 2 wherein the endoscope system comprises, The detection module further comprises a control end, wherein the control end can output a first level or a second level; the endoscope system further comprises: The switching tube comprises a first end, a second end and a control end; the first end of the switching tube is connected to the first voltage division module or the second voltage division module, the second end of the switching tube is connected to the ground, and the control end of the switching tube is connected to the control end of the detection module. When the control end outputs a first level, the switch tube is conducted, the first detection end receives the first voltage division signal and is used for judging whether the first differential transmission data line is in open circuit or short circuit with the first power supply or the ground, and the second detection end receives the second voltage division signal and is used for judging whether the second differential transmission data line is in open circuit or short circuit with the first power supply or the ground; When the control end outputs a second level, the switching tube is turned off, the first detection end receives the first voltage division signal, and the second detection end receives the second voltage division signal, so as to judge whether the first differential transmission data line is in short circuit with the second differential transmission data line or not.
4. 4. The endoscope system of claim 2 wherein the endoscope system comprises, The first voltage dividing module includes: The first end of the first voltage division unit is connected to the first power supply, and the second end of the first voltage division unit is connected to the first detection end of the detection module; The first end of the second voltage division unit is connected to the second end of the first voltage division unit and connected to the first detection end of the detection module, and the second end of the second voltage division unit is connected to the first end of the first differential transmission data line; and a third voltage division unit, wherein a first end of the third voltage division unit is connected to a second end of the first differential transmission data line, and a second end of the third voltage division unit is connected to ground.
5. 5. The endoscope system of claim 3 wherein the endoscope system, The second voltage dividing module includes: The first end of the fourth voltage division unit is connected to the first power supply, and the second end of the fourth voltage division unit is connected to the second detection end of the detection module; The first end of the fifth voltage division unit is connected to the second end of the fourth voltage division unit and connected to the second detection end of the detection module, and the second end of the fifth voltage division unit is connected to the first end of the switching tube; a sixth voltage division unit, wherein a first end of the sixth voltage division unit is connected to a second end of the fifth voltage division unit and to a first end of the switching tube, and a second end of the sixth voltage division unit is connected to a first end of the second differential transmission data line; And a seventh voltage division unit, a first end of which is connected to a second end of the second differential transmission data line, and a second end of which is connected to ground.
6. 6. The endoscopic system of claim 5, wherein the endoscope comprises a plurality of blades, When the signal output voltage of the first detection end or the second detection end is in a first threshold range, the connection of the first differential transmission data line or the second differential transmission data line and other modules does not generate open circuit or short circuit, or the first differential transmission data line or the second differential transmission data line and a power supply generate short circuit, and the power supply voltage is smaller than the first power supply voltage; When the control end of the detection module is at a first level and the signal output voltage of the first detection end or the second detection end is in a second threshold range, and the lower limit of the second threshold range is larger than the upper limit of the first threshold range, the first differential transmission data line or the second differential transmission data line is open or the first differential transmission data line or the second differential transmission data line is in short circuit with a power supply, and the power supply voltage is smaller than or equal to the first power supply voltage; When the control end of the detection module is at a first level and the signal output voltage of the first detection end or the second detection end is in a third threshold range, the upper limit of the third threshold range is smaller than the lower limit of the first threshold range, and the first differential transmission data line or the second differential transmission data line is in short circuit with the ground.
7. 7. The endoscopic system of claim 1, wherein the endoscope comprises a plurality of blades, The data line is a coaxial transmission data line; the voltage dividing module includes: An eighth voltage division unit, a first end of which is connected to the first power supply, and a second end of which is connected to the detection end of the detection module; A ninth voltage division unit, wherein a first end of the ninth voltage division unit is connected to a second end of the eighth voltage division unit and is connected to a detection end of the detection module, and a second end of the ninth voltage division unit is connected to a first end of the coaxial transmission data line; And the first end of the tenth pressing unit is connected to the second end of the coaxial transmission data line, and the second end of the tenth pressing unit is connected to the ground.
8. 8. A fault detection method of an endoscope, applied to the endoscope system according to any one of claims 1 to 7, comprising: Transmitting an output signal of the endoscope imaging module to the endoscope host in a differential transmission manner; adjusting a control end of the detection module to be a first level, and detecting signal output of the first detection end or the second detection end; Judging whether the signal output voltage of the first detection end or the second detection end is in a first threshold range or not, if yes, judging that the connection of the first differential transmission data line or the second differential transmission data line and other modules is not open-circuited or short-circuited, or that the first differential transmission data line or the second differential transmission data line is short-circuited with a power supply, and the power supply voltage is smaller than the first power supply voltage; If not, judging whether the signal output voltage of the first detection end or the second detection end is in a second threshold range, wherein the lower limit of the second threshold range is larger than the upper limit of the first threshold range; if yes, judging whether the first differential transmission data line or the second differential transmission data line is open or whether the first differential transmission data line or the second differential transmission data line is short-circuited with a power supply, wherein the power supply voltage is smaller than or equal to the first power supply voltage; if not, judging whether the signal output voltage of the first detection end or the second detection end is in a third threshold range, wherein the upper limit of the third threshold range is smaller than the lower limit of the first threshold range; If not, judging whether the signal output voltage of the first detection end or the second detection end is larger than the first power supply voltage, and if so, judging that the first differential transmission data line or the second differential transmission data line is short-circuited with a power supply, wherein the power supply voltage is larger than the first power supply voltage.
9. 9. The method for detecting a failure of an endoscope according to claim 8, further comprising: Transmitting an output signal of the endoscope imaging module to the endoscope host in a differential transmission manner; adjusting the control end of the detection module to be a second level, and detecting the signal output of the first detection end or the second detection end; Judging whether the signal output voltage of the first detection end is in the first threshold range or not, and judging whether the signal output voltage of the second detection end is in the third threshold range or not; If not, judging whether the signal output voltages of the first detection end and the second detection end are in the third threshold range, and if so, judging that a short circuit occurs between the first differential transmission data line and the second differential transmission data line.
10. 10. The method for detecting a failure of an endoscope according to claim 8, further comprising: transmitting an output signal of the endoscope imaging module to the endoscope host in a coaxial transmission manner; Judging whether the signal output voltage of the detection end of the detection module is in the first threshold range, if so, judging that the connection of the coaxial transmission data line and other modules is not open-circuited or short-circuited or the coaxial transmission data line and a power supply are short-circuited, wherein the power supply voltage is smaller than the first power supply voltage; if not, judging whether the signal output voltage of the detection end of the detection module is in the second threshold range, if so, judging that the coaxial transmission data line is open or the coaxial transmission data line and a power supply are in short circuit, wherein the power supply voltage is smaller than or equal to the first power supply voltage; If not, judging whether the signal output voltage of the detection end of the detection module is in the third threshold range or not; If not, judging whether the signal output voltage of the detection end of the detection module is larger than the first power supply voltage, and if so, judging that the coaxial transmission data line and the power supply are in short circuit, wherein the power supply voltage is larger than the first power supply voltage.

Description

Endoscope system and fault detection method of endoscope Technical Field The present invention relates to circuit protection, and more particularly, to an endoscope system and a fault detection method for an endoscope. Background An endoscope is a minimally invasive medical instrument of optical, electronic and precision machinery, and can enter the body through a natural cavity channel or a tiny incision of the human body. The endoscope conducts cold light source through the optical fiber or the lens group, then the sensor converts the in-vivo tissue image into electric signals, and the electric signals are displayed on an external display in real time after being processed, so that the effects of diagnosis and treatment are achieved. The endoscope system comprises an endoscope imaging module, an endoscope host, and further comprises electronic elements such as a sensor, a transmission line, a signal conditioning board, a power supply and the like. The devices require multiple operating voltages, control signals and image transmission signals for proper operation, resulting in a very large number of endoscope transmission line cores. The transmission line of the endoscope is easy to have bad phenomena such as open circuit, short circuit and the like, and the safety and the reliability of the endoscope system are affected. Detecting problems of open or short circuits of the transmission line in an endoscope system can also become difficult due to the complex endoscope system. Disclosure of Invention The invention mainly solves the technical problem that the fault of a transmission line in an endoscope system in the prior art is difficult to detect. According to a first aspect, there is provided in one embodiment an endoscope system comprising: An image sensor for converting an optical image into an electrical signal; A data line; a plurality of power sources for powering the endoscope system; The endoscope imaging module is connected to the image sensor and used for receiving an electric signal sent by the image sensor, converting the electric signal into first data based on a preset communication protocol and outputting the first data through the data line; the endoscope host is used for receiving first data sent by the endoscope imaging module through the data wire, converting the first data into second data based on a preset communication protocol and outputting the second data; The detection module comprises a detection end, The first end of the voltage division module is connected to the first power supply, the second end of the voltage division module is connected to the ground, the output end of the voltage division module is connected to the detection end, and the input end of the voltage division module is connected to the data line; When the data line is in open circuit or short circuit, the output end of the voltage division module can output different voltage division signals; When the detection module receives the voltage division signal, the data line can be judged to be in an open circuit or a short circuit. The invention further provides that the data line is a differential transmission data line, and the differential transmission data line comprises a first differential transmission data line and a second differential transmission data line; the detection end of the detection module comprises a first detection end and a second detection end; the voltage division module comprises a first voltage division module and a second voltage division module, wherein a first end of the first voltage division module is connected to the first power supply, a second end of the first voltage division module is connected to the ground, an output end of the first voltage division module is connected to the first detection end, and an input end of the first voltage division module is connected to the first differential transmission data line; The first end of the second voltage dividing module is connected to the first power supply, the second end of the second voltage dividing module is connected to the ground, the output end of the second voltage dividing module is connected to the second detection end, and the input end of the second voltage dividing module is connected to the second differential transmission data line; when the first differential transmission data line is in an open circuit or a short circuit, the voltage division output end of the first voltage division module outputs different first voltage division signals; The detection module receives the first voltage division signal and is used for judging whether the first differential transmission data line is in an open circuit or a short circuit, and the detection module receives the second voltage division signal and is used for judging whether the second differential transmission data line is in an open circuit or a short circuit. According to the further arrangement of the invention, the detection module further comprises a control end, and