Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a detection device, an X-ray imaging system and a low power consumption detection method for solving the problem of low endurance of the detector in the prior art.
To achieve the above and other related objects, the present invention provides a probe apparatus, which at least includes a TFT panel, a probe unit, and a circuit board;
the TFT panel is used for responding to X rays and converting the X rays into charge signals;
The detection unit is used for detecting whether a detected object exists in the detection area;
The circuit board is connected with the output end of the detection unit, and the TFT panel is controlled to be in a low-power consumption state or a normal working state based on the output signal of the detection unit.
Optionally, the detection device further comprises a middleware, wherein the middleware is arranged between the TFT panel and the circuit board and used for supporting the TFT panel.
Optionally, the detection device further comprises a scintillator, wherein the scintillator is arranged on one surface, far away from the circuit board, of the TFT panel and is used for converting X-rays into visible light, and at the moment, the TFT panel is used for converting the visible light into charge signals.
Optionally, the circuit board comprises a main controller, a time sequence generator, a row scanning driving circuit and a column signal reading circuit;
the input end of the main controller is connected with the output end of the detection unit, and the operation of the time sequence generator is controlled based on the output signal of the detection unit;
The input end of the time sequence generator is connected with the output end of the main controller, and the output end of the time sequence generator is connected with the input end of the row scanning driving circuit and the input end of the column signal reading circuit and is used for generating time sequences required by row scanning and time sequences required by reading charge signals;
the output end of the line scanning driving circuit is connected with the TFT panel and is used for driving the TFT switch in the TFT panel to be turned on or turned off;
And the output end of the column signal reading circuit is connected with the TFT panel and is used for reading charge signals in the TFT panel.
Optionally, the circuit board further comprises a power management circuit for powering the detection device.
Optionally, the detecting unit is a pressure sensor, and the detecting unit is disposed above the TFT panel and is used for detecting whether the detecting device is under pressure.
Optionally, the detection device further comprises a housing, and the TFT panel and the circuit board are sealed in the housing.
More optionally, the detection unit is a proximity sensor disposed on the housing, and is configured to detect whether a distance between the detected object and the detection device is within a preset range.
Optionally, the detection unit is a vision sensor, and is configured to detect whether the detected object is in the detection area.
An X-ray photography system comprises a computer, the detection device and an X-ray source.
A low power consumption detection method comprises the following steps:
Detecting whether the detected object is in the detection area based on the detection unit;
When the detected object is not detected to enter the detection area, the detection device is switched to a low-power consumption state;
When the detected object enters the detection area, a response signal is sent out, the detection device is switched to a normal working state based on the response signal, and the normal working state comprises the steps of sequentially executing a clearing operation, an exposure operation and an acquisition operation.
Optionally, in the instruction synchronization mode, when the detected object is not detected to enter the detection area, the detection device is in a low power consumption state;
when the detected object enters the detection area, the detection device is switched to a normal working state, the leakage current in the TFT panel is subjected to a plurality of times of timing emptying operations, the exposure operation is carried out after an exposure instruction is received, the acquisition operation is carried out after the exposure is completed, the plurality of times of emptying operations are carried out after the image acquisition is completed, and the detection device is switched to a low-power consumption state after the detected object leaves the detection area.
Optionally, in the automatic exposure detection synchronization mode, when the detected object is not detected to enter the detection area, the detection device is in a low power consumption state;
When the detected object enters the detection area, the detection device is switched to a normal working state, the leakage current in the TFT panel is continuously emptied once until the exposure command is received, the exposure operation is performed after the exposure is completed, the acquisition operation is performed after the image acquisition is completed, the continuous emptying operation is performed once, and after the detected object leaves the detection area, the detection device is switched to a low-power consumption state.
As described above, the detection device, the X-ray photographing system, and the low power consumption detection method of the present invention have the following advantageous effects:
1, the detection unit in the detection device sends out a response signal when the detected object is detected, so that the detection device enters an exposure acquisition state, and is in a low-power consumption state when the detected object is not detected, so that the clearing frequency of leakage current in the TFT panel is reduced, the power consumption is reduced, and the duration time is prolonged.
2, The detection device has less power consumption in a low power consumption state, so that the service time of the battery is prolonged, the service life of the battery is prolonged, and the maintenance cost is reduced.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention.
Please refer to fig. 1-4. It should be noted that, the illustrations provided in the present embodiment merely illustrate the basic concept of the present invention by way of illustration, and only the components related to the present invention are shown in the drawings rather than the number, shape and size of the components in actual implementation, and the form, number and proportion of each component in actual implementation may be arbitrarily changed, and the layout of the components may be more complex.
Example 1
The embodiment provides a detection device which at least comprises a TFT panel 1, a detection unit 2 and a circuit board 3.
As shown in fig. 1, the circuit board 3 is disposed on the backlight surface of the TFT panel 1.
As shown in fig. 1, the TFT panel 1 is for responding to X-rays and converting the X-rays into a charge signal. The TFT panel has a plurality of pixels and driving lines, and each pixel has 1 photodiode (Diode) capable of storing charge corresponding to X-ray dose and 1 Thin Film Transistor (TFT) corresponding to a switch for storing charge in the photodiode, which can be turned on or off under control of the driving circuit and timing, and can read out the charge stored in the Diode when turned on. The TFTs and the diodes in the TFT panel generate leakage currents, and the leakage currents gradually increase with time, which affects the uniformity of the image and the dynamic range of the detector, so that the leakage currents need to be emptied before exposure to obtain high-quality images, which is called as emptying of the TFT panel. For the direct detector, the TFT panel can directly respond to the X-ray and convert the X-ray into a charge signal, and the specific working principle is common knowledge in the art, which is not described herein.
The detection device further comprises a middle piece 4, wherein the middle piece 4 is arranged between the TFT panel 1 and the circuit board 3, and the middle piece 4 is a structural part and is used for supporting the TFT panel 1.
The detection device further comprises a scintillator 5, wherein the scintillator 5 is arranged on one surface of the TFT panel 1 far away from the circuit board 3 and is used for converting X-rays into visible light, and the TFT panel 1 is used for absorbing the visible light and converting the visible light into a charge signal at the moment. For the indirect detector, the X-ray needs to be converted into visible light, and then the visible light is absorbed by the TFT panel and converted into a charge signal, so the selection of the scintillator 5 depends on whether the detector is an indirect detection or a direct detection, which is not limited herein, but not limited by the embodiment.
The detection device further comprises a shell 6, wherein the TFT panel 1, the middleware 4, the scintillator 5 and the circuit board 3 are sealed in the shell 6, and the shell 6 plays a role in protecting and supporting the detection device.
As shown in fig. 1, the detecting unit 2 is configured to detect whether an object to be detected exists in the detecting area, and when the detecting unit 2 detects that the object to be detected exists in the detecting area, send a response signal to the circuit board 3, and the circuit board 3 starts sending a driving signal to the TFT panel 1 to drive the TFT panel 1 to perform continuous emptying operation. When the detection unit 2 does not detect the detected object, the detection device is in a low power consumption state, and the TFT panel 1 and the circuit board 3 are not in work due to dormancy, so that the service life of the detection device is prolonged.
As an implementation manner of this embodiment, the detecting unit 2 is a pressure sensor, and the detecting unit 2 is disposed above the TFT panel 1 and is configured to detect whether the detecting device receives pressure, and if the pressure sensor outputs a signal, which indicates that the detected object is already in the detection area, the circuit board 3 starts to send a driving signal to the TFT panel 1 after receiving the signal of the pressure sensor, so as to drive the TFT panel 1 to start emptying, and perform exposure collection during exposure. In this embodiment, the pressure sensor, the TFT panel 1, the intermediate member 4, the scintillator 5, and the circuit board 3 are all sealed in the housing, and in actual production, the present embodiment is not limited thereto.
As another implementation manner of this embodiment, the detection unit 2 is a proximity sensor disposed on the housing 6, and is configured to detect whether a distance between a detected object and the detection device is within a preset range, and when the detected object is detected to be within a detection area, the proximity sensor sends a response signal to the circuit board 3, and the TFT panel 1 starts to empty and is ready for exposure collection at any time. The preset range means that the tested object is in the detection area, and the tested object can complete the shooting task.
As a further implementation manner of this embodiment, the detecting unit 2 is a vision sensor for detecting whether the detected object is in the detecting area, and when the detected object is detected, the vision sensor sends a response signal to the TFT panel 1 and the circuit board 3, and the TFT panel 1 starts to be emptied and is ready for exposure collection at any time. As an example, the visual sensor may be disposed on the housing 6, and when a detection system is formed, the visual sensor may be disposed at other positions, and the specific disposition is not limited, and will not be described in detail herein.
As shown in fig. 1, the circuit board 3 is connected to the output end of the detecting unit 2, and controls the TFT panel 1 to be in a low power consumption state or a normal working state based on the output signal of the detecting unit 2.
Specifically, as shown in fig. 2, the circuit board 3 includes a main controller 31, a timing generator 32, a row scanning driving circuit 33, and a column signal reading circuit 34. The input end of the main controller 31 is connected with the output end of the detecting unit 2, the operation of the time sequence generator 32 is controlled based on the output signal of the detecting unit 2, the input end of the time sequence generator 32 is connected with the output end of the main controller 31, the output end of the time sequence generator is connected with the input end of the row scanning driving circuit 33 and the input end of the column signal reading circuit 34 and is used for generating time sequences required by row scanning and time sequences required by reading charge signals, the output end of the row scanning driving circuit 33 is connected with the TFT panel 1 and is used for driving the TFT switch in the TFT panel 1 to be turned on or turned off, and the output end of the column signal reading circuit 34 is connected with the TFT panel 1 and is used for reading the charge signals in the TFT panel 1. After receiving the response signal sent by the detecting unit 2, the main controller 31 controls the timing generator 32 to generate the timing required for the row scanning and the timing required for reading the charge signal, so that the row scanning driving circuit 33 drives the TFT switches in the TFT panel 1 to be turned on or off, and the column signal reading circuit 34 reads the charge signal in the TFT panel 1.
As an example, as shown in fig. 2, the circuit board 3 further comprises a power management circuit 35 for powering the detection means. In practical production, the arrangement of the power supply circuit is not limited to the present embodiment.
The detection device starts exposure preparation work when the detected object is detected, and is in a dormant state when the detected object is not detected, so that the power consumption is reduced, and the duration time and the service life of a battery are prolonged.
Example two
The present embodiment provides an X-ray radiography system, including a detection device according to one embodiment, and further including a computer and an X-ray source.
The detection device and the X-ray source are both connected with the computer, the computer triggers the X-ray source to emit X-rays, and the detection device collects X-ray images and transmits the collected X-ray images to the computer for processing and displaying. When the detection device detects that the detected object enters the detection area, the X-ray photographing system is converted into a normal working state.
The detection device in the X-ray photographing system in this embodiment detects whether the detected object is in the detection area, so that the X-ray photographing system switches the working state, and when the system is in a low power consumption state, the power consumption of the system is reduced, thereby reducing the power consumption and increasing the service time.
Example III
The embodiment provides a low-power consumption detection method, which is realized based on the detection device in the first embodiment, and comprises the following steps:
whether the object to be detected is within the detection area is detected based on the detection unit 2.
Specifically, when the detection unit 2 detects that the detected object enters the detection area, a response signal is sent to the circuit board 3, and the detection mode includes, but is not limited to, the detection device sensing the pressure transmitted by the detected object, the detection of the detected object by the vision sensor, the detection of the detected object by the proximity sensor, and the like, which are not described in detail.
And when the detected object is not detected to enter the detection area, the detection device is switched to a low-power consumption state.
Specifically, when the detection device is in a low power consumption state, the TFT panel 1 and the circuit board 3 are dormant, and the power consumption is reduced.
When the detected object enters the detection area, a response signal is sent out, the detection device is switched to a normal working state based on the response signal, and the normal working state comprises the steps of sequentially executing a clearing operation, an exposure operation and an acquisition operation.
Specifically, when the detected object is detected, the circuit board 3 starts to send a driving signal to the TFT panel 1, the leakage current in the TFT panel 1 performs a plurality of emptying operations, and the normal working state process includes sequentially performing the emptying operation, the exposure operation, and the collection operation.
As shown in fig. 3, in the instruction synchronization mode, when the detected object is not detected to enter the detection area, the detection device is in a low power consumption state, the circuit board 3 and the TFT panel 1 are dormant, when the detected object is detected to enter the detection area, the detection device is switched to a normal working state, a plurality of times of timing emptying operation is performed on leakage current in the TFT panel 1, an exposure operation is performed after an exposure instruction is received, an acquisition operation is performed after the exposure is completed, a plurality of times of emptying operation is performed after the image acquisition is completed, and after the detected object is detected to leave the detection area, the detection device is switched to a low power consumption state, and the circuit board 3 and the TFT panel 1 are dormant again. The upper part of fig. 3 is a schematic diagram of a detection process in a command synchronous mode in the prior art, continuous emptying and dormancy operations are required to be performed before a detected object enters a detection area and after the detected object leaves the detection area, a large amount of electricity is consumed, and the lower part is a schematic diagram of a detection process of the detection device of the application, and the detection device is in a low-power consumption state and has reduced power consumption in a time when the detected object is not detected.
As another implementation manner of this embodiment, as shown in fig. 4, in the automatic exposure detection synchronization mode, when the detected object is not detected to enter the detection area, the circuit board 3 and the TFT panel 1 are dormant when the detection device is in a low power consumption state, when the detected object is detected to enter the detection area, the detection device is switched to a normal working state, a continuous emptying operation is performed on the leakage current in the TFT panel 1 until an exposure instruction is received, an acquisition operation is performed after the exposure is completed, a continuous emptying operation is performed after the image acquisition is completed, and after the detected object is detected to leave the detection area, the detection device is switched to a low power consumption state, and the circuit board 3 and the TFT panel 1 are dormant again. The upper part of fig. 4 is a schematic diagram of a detection process in an automatic exposure detection synchronous mode in the prior art, continuous emptying operation is required before a detected object enters a detection area and after the detected object leaves the detection area, a large amount of electricity is consumed, and the lower part is a schematic diagram of a detection process of the detection device of the application, wherein the detection device is in a low-power sleep state in a time when the detected object is not detected, the power consumption is reduced, the electric quantity is saved, and the service time and the service life are prolonged.
In summary, the invention provides a detection device, an X-ray photographing system and a low-power consumption detection method, wherein the detection device at least comprises a TFT panel, a detection unit and a circuit board, the TFT panel is used for responding to X rays and converting the X rays into charge signals, the detection unit is used for detecting whether a detected object exists in a detection area, the circuit board is connected with the output end of the detection unit, and the TFT panel is controlled to be in a low-power consumption state or a normal working state based on the output signals of the detection unit. The detection unit in the detection device sends out a response signal when the detected object is detected, so that the detection device enters an exposure acquisition state, and is in a dormant state when the detected object is not detected, so that the emptying frequency of a TFT panel is reduced, the power consumption is reduced, the endurance time is prolonged, and in a low-power consumption state, the power consumption is low, the service time of a battery is prolonged, the service life of the battery is prolonged, and the maintenance cost is reduced. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.