Electric quantity acquisition control device for x-ray machine and x-ray machine

Abstract

The utility model discloses a kind of electric quantity acquisition control device for X-ray machine, comprising: voltage sampling input module, the voltage sampling input module includes first resistance, second resistance, the first resistance is connected in parallel with second resistance, for the current-limiting voltage division to external sampling voltage signal is obtained detection voltage signal;Operational amplifier module, for the detection voltage is amplified to improve voltage amplitude to obtain amplified voltage signal;Signal conditioning module, for the amplified voltage signal is filtered to obtain stabilized voltage signal;A / D conversion module, for the stabilized voltage signal is converted into digital voltage signal to determine X-ray machine electric quantity according to the digital voltage signal.The utility model first resistance is connected in parallel with second resistance, disperses current load, reduces single point failure risk, double resistance cooperates current-limiting, avoids high-voltage pulse impact after-stage operational amplifier module, after voltage division signal is filtered by RC and can inhibit high-frequency interference, improves measurement stability and accuracy.

Description

Technical Field

[0001] This utility model belongs to the field of circuit design, specifically relating to a power acquisition and control device for an X-ray machine and an X-ray machine. Background Technology

[0002] Medical X-ray machines play a crucial role in medical diagnosis and treatment. Currently, most medical X-ray machines are stationary and powered by fixed power sources. With the development of medical technology, some portable X-ray machines are emerging, powered by portable batteries. However, current X-ray machine power acquisition methods are inaccurate, and due to the high operating voltage of X-ray machines, there is a lack of effective isolation between the high-voltage and low-voltage sides. Furthermore, the existing solutions suffer from excessive temperature drift due to the need for high-voltage branching, leading to inaccurate acquisition results. Utility Model Content

[0003] To address the aforementioned problems in the prior art, this utility model provides a power acquisition and control device for an X-ray machine and an X-ray machine itself. The technical problem to be solved by this utility model is achieved through the following technical solution: A power acquisition and control device for an X-ray machine, comprising: A voltage sampling input module, comprising a first resistor and a second resistor, wherein the first resistor and the second resistor are connected in parallel, for performing current limiting and voltage division on an external sampled voltage signal to obtain a detection voltage signal; The operational amplifier module is used to amplify the detected voltage to increase the voltage amplitude and obtain an amplified voltage signal; The signal conditioning module is used to filter the amplified voltage signal to obtain a regulated signal; An A / D conversion module is used to convert the regulated signal into a digital voltage signal to determine the power of the X-ray machine based on the digital voltage signal.

[0004] In one specific embodiment, the resistance of the first resistor is 100kΩ, and the resistance of the second resistor is 6.8kΩ.

[0005] In one specific embodiment, the operational amplifier module includes a third resistor, an operational amplifier, a fourth resistor, and a first capacitor; one end of the third resistor is connected to the output terminal of the voltage sampling input module, and the other end is connected to the non-inverting input terminal of the operational amplifier; one end of the fourth resistor is connected to the inverting input terminal of the operational amplifier, and the other end is connected to the output terminal of the operational amplifier; one end of the first capacitor is connected in series between the ground pin and the ground terminal of the operational amplifier, and the other end is connected to a 5V voltage source; the output terminal of the operational amplifier is connected to the signal conditioning module.

[0006] In one specific embodiment, the resistance values ​​of the third resistor and the fourth resistor are both 10kΩ, and the capacitance value of the first capacitor is 0.1μF.

[0007] In one specific embodiment, the operational amplifier is an LM358.

[0008] In one specific embodiment, the signal conditioning module includes a fifth resistor, a sixth resistor, a second capacitor, a first diode, a second diode, and a third capacitor; one end of the fifth resistor is connected to the output terminal of the operational amplifier, and the other end is connected to the signal input terminal of the A / D conversion module; the sixth resistor, the second capacitor, the first diode, and the third capacitor are connected in parallel between the fifth resistor and the signal input terminal of the A / D conversion module, and the anodes of the sixth resistor, the second capacitor, the first diode, and the other end of the third capacitor are all grounded; the anode of the second diode is connected between the fifth resistor and the signal input terminal of the A / D conversion module, and the cathode of the second diode is connected to a 3.3V voltage source.

[0009] In one specific embodiment, the fifth resistor has a resistance of 1kΩ, the sixth resistor has a resistance of 2kΩ, the second capacitor and the third capacitor both have a capacitance of 1nF, and the first diode and the second diode are both 1N4148.

[0010] In one specific embodiment, the A / D conversion module includes an A / D conversion chip, a first adjustable rheostat, and a second adjustable rheostat; a first pin of the A / D conversion chip is connected to the sliding pin of the first adjustable rheostat; a second pin of the A / D conversion chip is connected to the output terminal of the signal conditioning module; a third pin of the A / D conversion chip is connected to the sliding pin of the second adjustable rheostat; a fourth pin of the A / D conversion chip is connected to one fixed pin of the second adjustable rheostat and a ground terminal, the other fixed pin of the second adjustable rheostat is connected to one fixed pin of the first adjustable rheostat and a 5V voltage source, and the other fixed pin of the first adjustable rheostat is grounded; wherein, the A / D conversion chip is model TLC1549.

[0011] In one specific embodiment, the maximum resistance of both the first adjustable rheostat and the second adjustable rheostat is 4.7kΩ.

[0012] The present invention also provides an X-ray machine, including the above-mentioned power acquisition and control device for an X-ray machine.

[0013] The beneficial effects of this utility model are: In this utility model, the first resistor and the second resistor of the power acquisition and control device for X-ray machines are connected in parallel to distribute the current load, reduce the risk of single-point failure, and the dual resistors work together to limit the current, avoiding high-voltage pulse impact on the subsequent operational amplifier module. After voltage division, the signal is filtered by RC to suppress high-frequency interference and improve measurement stability and accuracy.

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the circuit structure of a power acquisition and control device for an X-ray machine provided in an embodiment of the present invention. Detailed Implementation

[0016] The present invention will be further described in detail below with reference to specific embodiments, but the implementation of the present invention is not limited thereto.

[0017] Example 1 Please see Figure 1 , Figure 1 This is a schematic diagram of the circuit structure of a power acquisition and control device for an X-ray machine provided by an embodiment of the present invention, including: Voltage sampling input module 1, the voltage sampling input module 1 includes a first resistor R28 and a second resistor R31, the first resistor R28 and the second resistor R31 are connected in parallel, and are used to perform current limiting and voltage division on the external sampled voltage signal to obtain the detection voltage signal; Operational amplifier module 2 is used to amplify the detected voltage to increase the voltage amplitude and obtain an amplified voltage signal; Signal conditioning module 3 is used to filter the amplified voltage signal to obtain a regulated signal; A / D conversion module 4 is used to convert the regulated signal into a digital voltage signal to determine the X-ray machine power based on the digital voltage signal.

[0018] In one specific embodiment, the resistance of the first resistor R29 is 100kΩ, and the resistance of the second resistor R31 is 6.8kΩ.

[0019] In one specific embodiment, the operational amplifier module 2 includes a third resistor R32, an operational amplifier LM358, a fourth resistor R48, and a first capacitor C10; one end of the third resistor R32 is connected to the output terminal of the voltage sampling input module 1, and the other end is connected to the non-inverting input terminal 3 of the operational amplifier LM358; one end of the fourth resistor R48 is connected to the inverting input terminal 2 of the operational amplifier LM358, and the other end is connected to the output terminal 1 of the operational amplifier; one end of the first capacitor C10 is connected in series between the ground pin and the ground terminal of the operational amplifier LM358, and the other end is connected to a 5V voltage source; the output terminal 1 of the operational amplifier LM358 is connected to the signal conditioning module 3.

[0020] The LM358 operational amplifier is a single-supply operational amplifier (+5V and DGND) configured as a non-inverting proportional amplifier circuit. The non-inverting input (pin 3) receives the signal after voltage division from the previous stage through resistor R32 (10kΩ); the inverting input (pin 2) is connected to the output (pin 1) through feedback resistor R18 to form negative feedback.

[0021] The formula for the gain of a non-inverting amplifier is: If Rfeedback = Rgain = 10kΩ, then G = 2, and the output voltage is twice the input voltage.

[0022] In one specific embodiment, the resistance values ​​of the third resistor R32 and the fourth resistor R48 are both 10kΩ, and the capacitance value of the first capacitor C10 is 0.1μF.

[0023] In one specific embodiment, the signal conditioning module 3 includes a fifth resistor R33, a sixth resistor R44, a second capacitor C11, a first diode D11, a second diode D10, and a third capacitor C12. One end of the fifth resistor R33 is connected to the output terminal 1 of the operational amplifier LM358, and the other end is connected to the signal input terminal of the A / D conversion module 4. The sixth resistor R44, the second capacitor C11, the first diode D11, and the third capacitor C12 are connected in parallel between the fifth resistor R33 and the signal input terminal of the A / D conversion module, and the positive terminals of the sixth resistor R44, the second capacitor C11, the first diode D11, and the other end of the third capacitor C12 are all grounded. The positive terminal of the second diode D10 is connected between the fifth resistor R33 and the signal input terminal of the A / D conversion module 4, and the negative terminal of the second diode D10 is connected to a 3.3V voltage source.

[0024] In one specific embodiment, the fifth resistor R33 has a resistance of 1kΩ, the sixth resistor R44 has a resistance of 2kΩ, the second capacitor C11 and the third capacitor C12 both have a capacitance of 1nF, and the first diode D11 and the second diode D10 are both 1N4148.

[0025] Specifically, the RC filter circuit (R33, C11, C12) suppresses high-frequency interference (such as switching power supply noise, electromagnetic radiation, etc.) to ensure that the ADC sampling signal is smooth and stable; the voltage divider resistor (R33+R44) adjusts the output amplitude of the op-amp to strictly match the ADC input range (such as 0~3.3V) to avoid over-range distortion; the bidirectional TVS / zener diode (D10, D11) clamps the voltage to prevent electrostatic discharge or surge damage to the ADC input pin (limited to REF+ and GND).

[0026] In one specific embodiment, the A / D conversion module 4 includes an A / D conversion chip TLC1549, a first adjustable rheostat VR5, and a second adjustable rheostat VR3; the first pin of the A / D conversion chip TLC1549 is connected to the sliding pin 2 of the first adjustable rheostat VR5; the second pin of the A / D conversion chip TLC1549 is connected to the output terminal of the signal conditioning module 3; the third pin of the A / D conversion chip TLC1549 is connected to the sliding pin 2 of the second adjustable rheostat VR3; the fourth pin of the A / D conversion chip TLC1549 is connected to one fixed pin of the second adjustable rheostat VR3 and a ground terminal, the other fixed pin of the second adjustable rheostat VR3 is connected to one fixed pin of the first adjustable rheostat VR5 and a 5V voltage source, and the other fixed pin of the first adjustable rheostat VR5 is grounded; In one specific embodiment, the maximum resistance of both the first adjustable rheostat VR5 and the second adjustable rheostat VR3 is 4.7kΩ.

[0027] In this utility model, the first resistor and the second resistor of the power acquisition and control device for X-ray machines are connected in parallel to distribute the current load, reduce the risk of single-point failure, and the dual resistors work together to limit the current, avoiding high-voltage pulse impact on the subsequent operational amplifier module. After voltage division, the signal is filtered by RC to suppress high-frequency interference and improve measurement stability and accuracy.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0031] Although this application has been described herein in conjunction with various embodiments, those skilled in the art, by reviewing the accompanying drawings, disclosure, and appended claims, will understand and implement other variations of the disclosed embodiments in carrying out the claimed application. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude a plurality. A single processor or other unit can implement several functions listed in the claims. While different dependent claims may recite certain measures, this does not mean that these measures cannot be combined to produce good results.

[0032] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A power acquisition and control device for an X-ray machine, characterized in that, include: A voltage sampling input module, comprising a first resistor and a second resistor, wherein the first resistor and the second resistor are connected in parallel, for performing current limiting and voltage division on an external sampled voltage signal to obtain a detection voltage signal; The operational amplifier module is used to amplify the detected voltage to increase the voltage amplitude and obtain an amplified voltage signal; The signal conditioning module is used to filter the amplified voltage signal to obtain a regulated signal; An A / D conversion module is used to convert the regulated signal into a digital voltage signal to determine the power of the X-ray machine based on the digital voltage signal.

2. The power acquisition and control device for an X-ray machine according to claim 1, characterized in that, The first resistor has a resistance of 100kΩ, and the second resistor has a resistance of 6.8kΩ.

3. The power acquisition and control device for an X-ray machine according to claim 1, characterized in that, The operational amplifier module includes a third resistor, an operational amplifier, a fourth resistor, and a first capacitor. One end of the third resistor is connected to the output terminal of the voltage sampling input module, and the other end is connected to the non-inverting input terminal of the operational amplifier. One end of the fourth resistor is connected to the inverting input terminal of the operational amplifier, and the other end is connected to the output terminal of the operational amplifier. One end of the first capacitor is connected in series between the ground pin and the ground terminal of the operational amplifier, and the other end is connected to a 5V voltage source. The output terminal of the operational amplifier is connected to the signal conditioning module.

4. The power acquisition and control device for an X-ray machine according to claim 3, characterized in that, The resistance values ​​of the third resistor and the fourth resistor are both 10kΩ, and the capacitance value of the first capacitor is 0.1μF.

5. The power acquisition and control device for an X-ray machine according to claim 3, characterized in that, The operational amplifier is model LM358.

6. The power acquisition and control device for an X-ray machine according to claim 3, characterized in that, The signal conditioning module includes a fifth resistor, a sixth resistor, a second capacitor, a first diode, a second diode, and a third capacitor. One end of the fifth resistor is connected to the output terminal of the operational amplifier, and the other end is connected to the signal input terminal of the A / D conversion module. The sixth resistor, the second capacitor, the first diode, and the third capacitor are connected in parallel between the fifth resistor and the signal input terminal of the A / D conversion module, and the anodes of the sixth resistor, the second capacitor, the first diode, and the other end of the third capacitor are all grounded. The anode of the second diode is connected between the fifth resistor and the signal input terminal of the A / D conversion module, and the cathode of the second diode is connected to a 3.3V voltage source.

7. The power acquisition and control device for an X-ray machine according to claim 6, characterized in that, The fifth resistor has a resistance of 1kΩ, the sixth resistor has a resistance of 2kΩ, the second capacitor and the third capacitor both have a capacitance of 1nF, and the first diode and the second diode are both 1N4148.

8. The power acquisition and control device for an X-ray machine according to claim 1, characterized in that, The A / D conversion module includes an A / D conversion chip, a first adjustable rheostat, and a second adjustable rheostat. A first pin of the A / D conversion chip is connected to the sliding pin of the first adjustable rheostat. A second pin of the A / D conversion chip is connected to the output terminal of the signal conditioning module. A third pin of the A / D conversion chip is connected to the sliding pin of the second adjustable rheostat. A fourth pin of the A / D conversion chip is connected to one fixed pin of the second adjustable rheostat and a ground terminal. The other fixed pin of the second adjustable rheostat is connected to one fixed pin of the first adjustable rheostat and a 5V voltage source. The other fixed pin of the first adjustable rheostat is grounded. The A / D conversion chip is model TLC1549.

9. The power acquisition and control device for an X-ray machine according to claim 8, characterized in that, The maximum resistance of both the first and second adjustable rheostats is 4.7kΩ.

10. An X-ray machine, characterized in that, Includes the power acquisition and control device for an X-ray machine as described in any one of claims 1-9.

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