CN209542695U - A kind of X-ray machine exposure current detection circuit - Google Patents

Abstract

The utility model provides a kind of X-ray machine exposure current detection circuit, including rectifying bridge chip, shell and circuit board, circuit board installs bottom end inside the housing by fixing bolt, circuit board upper end is machined with X-ray machine exposure current detection circuit, No. 1 pin for rectifying bridge chip BR1 draws X-ray machine electric current input 1, No. 2 pins for rectifying bridge chip BR1 draw X-ray machine electric current input 2, No. 3 pins of rectification bridge chip BR1 pass through wired earth, No. 4 pins of rectification bridge chip BR1 are connected by resistance R1 with No. 7 pins of voltage conversion chip U1, No. 5 pin first branchs of voltage conversion chip U1 are connected by resistance R7 with power supply terminal VCC, second branch is grounded by capacitor C3, No. 2 pins of voltage conversion chip U1 pass through resistance R5 and variable resistance R 6 ground connection, No. 4 pins of rectification bridge chip BR1 are by wired earth, and the design achieves the functions of being detected to X-ray machine exposure electric current.

Description

A kind of X-ray machine exposure current detection circuit

Technical field

The utility model is a kind of X-ray machine exposure current detection circuit, belongs to X-ray machine apparatus field.

Background technique

X-ray machine exposure current detection circuit is the circuit for measuring X-ray machine tube current MA value, it can monitor the work of X-ray machine Make state, detect the working condition of MA circuit, it can be used as the important evidence of debugging MA value, it is also maintenance X-ray machine must not Can tool less, do not have X-ray machine inside existing X-ray machine and expose current detection circuit, can not operating status to X-ray machine into Row effective monitoring.

Utility model content

In view of the deficienciess of the prior art, the utility model aim is to provide a kind of X-ray machine exposure current detection circuit, To solve the problems mentioned in the above background technology, the utility model is easy to use, realizes and examines to X-ray machine exposure electric current The function of survey, detection accuracy is high, high reliablity.

To achieve the goals above, the utility model is achieved through the following technical solutions: a kind of X-ray machine exposure electricity Current detection circuit, including rectification bridge chip, shell and circuit board, the circuit board are installed inside the housing by fixing bolt Bottom end, the circuit board upper end are machined with X-ray machine exposure current detection circuit, and No. 1 pin of the rectification bridge chip BR1 is drawn No. 2 pins of X-ray machine electric current input 1, the rectification bridge chip BR1 draw X-ray machine electric current input 2, the rectification bridge chip BR1 No. 3 pins by wired earth, No. 4 pins of the rectification bridge chip BR1 pass through the 7 of resistance R1 and voltage conversion chip U1 Number pin is connected, and No. 5 pin first branchs of the voltage conversion chip U1 are connected by resistance R7 with power supply terminal VCC It connects, second branch is grounded by capacitor C3, and No. 2 pins of the voltage conversion chip U1 pass through resistance R5 and variable resistance R6 ground connection, No. 4 pins of the rectification bridge chip BR1 are by wired earth, and the of No. 6 pins of the voltage conversion chip U1 One branch is connected by conducting wire with No. 1 pin of voltage conversion chip U1, and second branch is connect by resistance R2 and resistance R11 Ground, third branch are connected by capacitor C2 with the node of resistance R2 and resistance R11, and No. 3 of the voltage conversion chip U1 are drawn The foot first branch is connected by resistance R3 with power supply terminal VCC, and second branch is grounded by resistance R4, and the voltage converts core No. 3 pins of piece U1 draw output end 1, No. 3 pins of the voltage conversion chip U1 by capacitor C4 respectively with diode D2 Anode and the cathode of diode D1 be connected, the anode of the diode D1 by wired earth, the diode D2's The cathode first branch is grounded by resistance R9, and second branch is connected by resistance R10 with the base stage of triode Q1, the capacitor C5 is connected in parallel with resistance R9, and the triode Q1 emitter draws output end 2, and the triode Q1 emitter is connect by conducting wire Ground.

Further, the rectification bridge chip BR1 chip model is KBL4005, the chip of the voltage conversion chip U1 Model LM331, the model 2N3904 of the triode Q1.

The utility model has the beneficial effects that a kind of X-ray machine of the utility model exposes current detection circuit, the utility model Current detection circuit is exposed by addition X-ray machine, the design achieves the functions of being detected to X-ray machine exposure electric current, solve Do not have X-ray machine inside existing X-ray machine and expose current detection circuit, the operating status of X-ray machine can not be carried out effective The problem of monitoring, the utility model is easy to use, realizes the function of being detected to X-ray machine exposure electric current, and detection accuracy is high, High reliablity.

Detailed description of the invention

Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other spies of the utility model Sign, objects and advantages will become more apparent upon:

Fig. 1 is the circuit diagram that a kind of X-ray machine of the utility model exposes current detection circuit；

Fig. 2 is the structural schematic diagram that a kind of X-ray machine of the utility model exposes current detection circuit；

Fig. 3 is the right view that a kind of X-ray machine of the utility model exposes current detection circuit；

In figure: 1- shell, 2- circuit board.

Specific embodiment

To be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, below In conjunction with specific embodiment, the utility model is further described.

Fig. 1-Fig. 3 is please referred to, the utility model provides a kind of technical solution: a kind of X-ray machine exposure current detection circuit, packet Rectification bridge chip, shell and circuit board are included, bottom end, circuit board upper end add circuit board inside the housing by fixing bolt installation Work has X-ray machine to expose current detection circuit, and No. 1 pin of rectification bridge chip BR1 draws X-ray machine electric current input 1, rectifies bridge chip No. 2 pins of BR1 draw X-ray machine electric current input 2, and No. 3 pins of rectification bridge chip BR1 rectify bridge chip by wired earth No. 4 pins of BR1 are connected by resistance R1 with No. 7 pins of voltage conversion chip U1, No. 5 pins of voltage conversion chip U1 The first branch is connected by resistance R7 with power supply terminal VCC, and second branch is grounded by capacitor C3, voltage conversion chip U1's No. 2 pins are grounded by resistance R5 and variable resistance R6, and No. 4 pins of rectification bridge chip BR1 pass through wired earth, voltage The first branch of No. 6 pins of conversion chip U1 is connected by conducting wire with No. 1 pin of voltage conversion chip U1, second branch It is grounded by resistance R2 and resistance R11, third branch is connected by capacitor C2 with the node of resistance R2 and resistance R11, electricity No. 3 pin first branchs of pressure conversion chip U1 are connected by resistance R3 with power supply terminal VCC, and second branch passes through resistance R4 No. 3 pins of ground connection, voltage conversion chip U1 draw output end 1, and No. 3 pins of voltage conversion chip U1 are distinguished by capacitor C4 It is connected with the cathode of the anode of diode D2 and diode D1, the anode of diode D1 passes through wired earth, diode D2 The cathode first branch be grounded by resistance R9, second branch is connected by resistance R10 with the base stage of triode Q1, capacitor C5 It is connected in parallel with resistance R9, triode Q1 emitter draws output end 2, and triode Q1 emitter is existed by wired earth, X-ray machine When work, electric current when exposure inputs 2 terminals by X-ray machine electric current input 1 and X-ray machine electric current and is introduced to rectification chip BR1, Then rectification chip BR1 rectifies exposure electric current, and then resistance R8 converts the current into voltage signal and is input to voltage Inside conversion chip U1, then voltage conversion chip U1 by voltage signal be transformed into the frequency pulse signal of its direct ratio and by its It is transmitted to the data input pin of external microcontroller, capacitor C4, capacitor C5, diode D1, diode D2, resistance R9 constitute multiplication of voltage Detector circuit, thus then the shift pulse signal for converting the voltage into chip U1 output passes through resistance R10 and three at direct current signal The data input pin of pole pipe VT1 inverse injection external microcontroller, so that external microcontroller carries out exposure start and end time Control, to realize the function of being detected to X-ray machine exposure electric current.

Rectification bridge chip BR1 chip model is KBL4005, and the chip model of voltage conversion chip U1 is LM331, triode The model 2N3904 of Q1.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above, for For those skilled in the art, it is clear that the present invention is not limited to the details of the above exemplary embodiments, and without departing substantially from this In the case where the spirit or essential attributes of utility model, the utility model can be realized in other specific forms.Therefore, no matter From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the utility model is by institute Attached claim rather than above description limit, it is intended that will fall within the meaning and scope of the equivalent elements of the claims All changes are embraced therein.It should not treat any reference in the claims as limiting related right It is required that.

In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art The other embodiments being understood that.

Claims (2)

1. a kind of X-ray machine exposes current detection circuit, including rectification bridge chip, shell and circuit board, it is characterised in that: described Circuit board installs bottom end inside the housing by fixing bolt, and the circuit board upper end is machined with X-ray machine exposure current detecting electricity Road, No. 1 pin of the rectification bridge chip BR1 draw X-ray machine electric current input 1, and No. 2 pins of the rectification bridge chip BR1 draw X-ray machine electric current input 2 out, No. 3 pins of the rectification bridge chip BR1 are described to rectify the 4 of bridge chip BR1 by wired earth Number pin is connected by resistance R1 with No. 7 pins of voltage conversion chip U1, No. 5 pins of the voltage conversion chip U1 One branch is connected by resistance R7 with power supply terminal VCC, and second branch is grounded by capacitor C3, the voltage conversion chip U1 No. 2 pins be grounded by resistance R5 and variable resistance R6, No. 4 pins of the rectification bridge chip BR1 are connect by conducting wire The first branch on ground, No. 6 pins of the voltage conversion chip U1 is connected by conducting wire with No. 1 pin of voltage conversion chip U1 It connects, second branch is grounded by resistance R2 and resistance R11, and third branch passes through the section of capacitor C2 and resistance R2 and resistance R11 Point is connected, and No. 3 pin first branchs of the voltage conversion chip U1 are connected by resistance R3 with power supply terminal VCC, the Two branches are grounded by resistance R4, and No. 3 pins of the voltage conversion chip U1 draw output end 1, the voltage conversion chip No. 3 pins of U1 are connected with the cathode of the anode of diode D2 and diode D1 respectively by capacitor C4, the diode The anode of D1 is grounded by wired earth, the cathode first branch of the diode D2 by resistance R9, and second branch passes through electricity Resistance R10 is connected with the base stage of triode Q1, and the capacitor C5 and resistance R9 is connected in parallel, and the triode Q1 emitter is drawn Output end 2, the triode Q1 emitter pass through wired earth.

2. a kind of X-ray machine according to claim 1 exposes current detection circuit, it is characterised in that: the rectification bridge chip BR1 chip model is KBL4005, and the chip model of the voltage conversion chip U1 is LM331, the model of the triode Q1 2N3904。