CN204906835U - Control circuit of mobile X -ray unit - Google Patents
Control circuit of mobile X -ray unit Download PDFInfo
- Publication number
- CN204906835U CN204906835U CN201520731240.9U CN201520731240U CN204906835U CN 204906835 U CN204906835 U CN 204906835U CN 201520731240 U CN201520731240 U CN 201520731240U CN 204906835 U CN204906835 U CN 204906835U
- Authority
- CN
- China
- Prior art keywords
- circuit
- control chip
- current treatment
- mobile
- ray unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
(B, ) the utility model discloses a control circuit of mobile X -ray unit. It includes filament current treatment circuit and bulb electric current treatment circuit, and circuit connection is handled to filament current treatment circuit and bulb electric current has the error magnification circuit, and error magnification circuit connection has control chip, and control chip is connected with drive circuit, and drive circuit connection has the main circuit, and main circuit connection has filament current 1, main circuit connection have a feedback circuit, feedback circuit links to each other with the error magnification circuit, control chip still be connected with filament current selection circuit and blind spot control circuit. The utility model discloses high frequency impulse good reliability, the stability of output are high, have improved the performance of X -ray machine widely. (B, )
Description
Technical field
the utility model relates to a kind of control circuit, particularly a kind of control circuit of mobile X-ray unit.
Background technology
the every field such as X-ray machine is widely used in health care, education of science, industry.Wherein, being applied to the assist a physician X-ray machine that diagnoses the illness of health care is utilize X-ray transparent human exposure to carry out imaging on slice, thin piece according to the density difference of the institutional frameworks such as human body intramuscular, bone.Owing to having miniaturization, low-power, be convenient to portable etc. special, be comparatively applicable to multiple occasion, small-power Medical portable X-ray unit is more and more subject to the favor in market.Mobile X-ray unit primarily of compositions such as the power circuit of X-ray bulb, X-ray machine and control circuits, but due to the structure of the control circuit of existing mobile X-ray unit more unreasonable, cause the high-frequency impulse that exports more unstable, thus have impact on the performance of X-ray machine.
Utility model content
the purpose of this utility model is, provides a kind of control circuit of mobile X-ray unit.The high-frequency impulse good reliability that the utility model exports, stability are high, greatly increase the serviceability of X-ray machine.
the technical solution of the utility model: a kind of control circuit of mobile X-ray unit, comprise heater current treatment circuit and tube current treatment circuit, heater current treatment circuit and tube current treatment circuit are connected with error amplifying circuit, error amplifying circuit is connected with control chip, control chip is connected with drive circuit, drive circuit is connected with main circuit, and main circuit is connected with output circuit; Described main circuit is connected with feedback circuit, and feedback circuit is connected with error amplifying circuit; Described control chip is also connected with heater current selection circuit and dead zone function circuit.
the control circuit of above-mentioned mobile X-ray unit, is characterized in that: described control chip is TL494.
compared with prior art, the utility model has done improvement to circuit structure, and the high-frequency impulse good reliability that the circuit after improvement exports, stability are high, greatly increase the serviceability of X-ray machine.The utility model is by feedback circuit Real-Time Monitoring main circuit, and the current information of main circuit is sent to error amplifying circuit, error amplifying circuit by after the feedback sample signal of feedback circuit and tube current treatment circuit and heater current treatment circuit Setting signal being compared, amplifying, export to the final stable output of control chip, meet the requirements of pulse and export.Further, applicant does preferably to control chip, selects TL494 as chip, have stability high, process fast, lower-cost feature.
Accompanying drawing explanation
fig. 1 is circuit diagram of the present utility model;
fig. 2 is the circuit diagram of heater current treatment circuit;
fig. 3 is the circuit diagram of error amplifying circuit;
fig. 4 is the circuit diagram of heater current selection circuit;
fig. 5 is the circuit diagram of dead zone function circuit.
Embodiment
below in conjunction with embodiment, the utility model is described in further detail, but not as to restriction of the present utility model.
embodiment: a kind of control circuit of mobile X-ray unit, form as shown in Figure 1, comprise heater current treatment circuit (also can be called heater current drive circuit) and tube current treatment circuit, heater current treatment circuit and tube current treatment circuit are connected with error amplifying circuit, error amplifying circuit is connected with the control chip that model is TL494, control chip is connected with drive circuit, and drive circuit is connected with main circuit, and main circuit is connected with output circuit; Described main circuit is connected with feedback circuit, and feedback circuit is connected with error amplifying circuit; Described control chip is also connected with heater current selection circuit and dead zone function circuit.The utility model is by feedback circuit Real-Time Monitoring main circuit, and the current information of main circuit is sent to error amplifying circuit, error amplifying circuit by after the feedback sample signal of feedback circuit and tube current treatment circuit and heater current treatment circuit Setting signal being compared, amplifying, export to the final stable output of control chip, meet the requirements of pulse and export.Further, applicant does preferably to control chip, selects TL494 as chip, have stability high, process fast, lower-cost feature.Above-mentioned each circuit can adopt custom circuit, also can adopt following concrete preferred circuit, as shown in Figure 2, described error amplifying circuit as shown in Figure 3 for described heater current treatment circuit, as shown in Figure 4, dead zone function circuit as shown in Figure 5 for described heater current selection circuit.
Claims (2)
1. the control circuit of mobile X-ray unit, it is characterized in that: comprise heater current treatment circuit and tube current treatment circuit, heater current treatment circuit and tube current treatment circuit are connected with error amplifying circuit, error amplifying circuit is connected with control chip, control chip is connected with drive circuit, drive circuit is connected with main circuit, and main circuit is connected with output circuit; Described main circuit is connected with feedback circuit, and feedback circuit is connected with error amplifying circuit; Described control chip is also connected with heater current selection circuit and dead zone function circuit.
2. the control circuit of mobile X-ray unit according to claim 1, is characterized in that: described control chip is TL494.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520731240.9U CN204906835U (en) | 2015-09-21 | 2015-09-21 | Control circuit of mobile X -ray unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520731240.9U CN204906835U (en) | 2015-09-21 | 2015-09-21 | Control circuit of mobile X -ray unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204906835U true CN204906835U (en) | 2015-12-23 |
Family
ID=54928971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520731240.9U Expired - Fee Related CN204906835U (en) | 2015-09-21 | 2015-09-21 | Control circuit of mobile X -ray unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204906835U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106304587A (en) * | 2016-08-23 | 2017-01-04 | 辽宁开普医疗系统有限公司 | A kind of system mixing control tube current and control method thereof |
-
2015
- 2015-09-21 CN CN201520731240.9U patent/CN204906835U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106304587A (en) * | 2016-08-23 | 2017-01-04 | 辽宁开普医疗系统有限公司 | A kind of system mixing control tube current and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20160921 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |