CN210836192U - Clamping type rapid currency count machine - Google Patents

Abstract

The utility model relates to a clip-type fast money counter, which comprises a fork-shaped clip, a capacitance sensor, a capacitance conversion circuit, a single-chip computer, a button and a display. The electrode plate of the capacitive sensor is fixed in the fork-shaped clip, and the banknote is placed in the middle of the capacitive sensor. The capacitance conversion circuit converts the capacitance into a digital quantity, and sends it to the single-chip microcomputer for processing to obtain the number of banknotes, and sends the display to display the number of banknotes.

Description

A clip-type fast money counter

technical field

The utility model relates to the technical fields of electronics, sensing and detection, and particularly applies the sensing and detection technology to banknote counting.

Background technique

With the development of society and economy, the country is getting richer and richer, the circulation of banknotes is increasing, and it takes more and more time to count. Money counting machine, the money counting machine is suitable for use inside the bank.

SUMMARY OF THE INVENTION

In order to solve the problem of slow counting of existing money counters, a clip-type fast money counting machine is designed. The device includes a fork clip (1), a flat plate I (2), a flat plate II (3), and a capacitance conversion circuit (4) ; Plate I (2) and Plate II (3) are fixed on the fork clamp (1) clip; Plate I (2) and Plate II (3) form a capacitor and are electrically connected to the capacitance conversion circuit (4). The fork clamp (1) is made of plastic, and the right side of the fork is connected with a spring (1-1), whose function is to clamp the right side; the fork head of the fork clamp (1) has hinges I (1-2) and Hinge II (1-3); Plate I (2) is fixed on hinge I (1-2), and plate I (2) can rotate at a small angle; Plate II (3) is fixed on hinge II (1-3), Plate II (3) can be rotated at a small angle. Plate I (2) and plate II (3) are made of single-sided copper-clad plates, plate I (2) is provided with electrode I (2-1), plate II (3) is provided with electrode II (3-1), and the electrode I(2-1) and electrode II(3-1) form capacitor C2. Capacitance conversion circuit (4) adopts chip AD7150, electrode I (2-1) is connected to pin 4 of chip AD7150, electrode II (3-1) is connected to pin 6 of chip AD7150; chip AD7150 converts the capacitance value of capacitor C2 Convert to a numeric value.

The beneficial features of the utility model are that the structure is simple, the cost of design and manufacture is low, and the speed of counting money is fast.

Description of drawings

Fig. 1 is the overall structure of the sensor probe, Fig. 2 is the fork clamp structure, Fig. 3 is the capacitive sensor, Fig. 4 is the circuit schematic diagram, and Fig. 5 is the banknote measurement diagram;

Among them, 1 is a fork clamp, 2 is a flat plate I, 3 is a flat plate II, 4 is a capacitance conversion circuit, 5 is a single-chip microcomputer, 6 is a button, and 7 is a liquid crystal display.

Detailed ways

The utility model comprises a fork clip (1), a flat plate I (2), a flat plate II (3), a capacitance conversion circuit (4), a single-chip microcomputer (5), a button (6) and a display (7); the flat plate I (2) And the flat plate II (3) is fixed on the fork clamp (1) clip; the flat plate I (2) and the flat plate II (3) form a capacitor, which is electrically connected to the capacitance conversion circuit (4). The capacitance conversion circuit (4), the button (6) and the display (7) are connected to the microcontroller (5); the fork clamp (1) is made of plastic, and the right side of the fork is connected with a spring (1-1), which clamps the right side ; The fork head of the fork clamp (1) has hinge I (1-2) and hinge II (1-3); the plate I (2) is fixed on the hinge I (1-2), and the plate I (2) can Small angle rotation; flat plate II (3) is fixed on hinge II (1-3), flat plate II (3) can rotate in small angle. Plate I (2) and plate II (3) are made of single-sided copper-clad plates, plate I (2) is provided with electrode I (2-1), plate II (3) is provided with electrode II (3-1), and the electrode I(2-1) and electrode II(3-1) form capacitor C2. Capacitance conversion circuit (4) adopts chip AD7150, electrode I (2-1) is connected to pin 4 of chip AD7150, electrode II (3-1) is connected to pin 6 of chip AD7150; chip AD7150 converts the capacitance value of capacitor C2 Convert to a numeric value.

In this embodiment, the single-chip microcomputer (5) adopts STC12LE5204AD; the button (6) adopts three independent buttons SW1, SW2 and SW3, respectively defining functions as self-checking, measurement and function switching; and the display (7) adopts liquid crystal LCD1602.

In this embodiment, the chip AD7150 has a power filter capacitor C3 on the periphery, the microcontroller STC12LE5204AD has reset circuits C1 and R1 on the periphery, and the liquid crystal LCD1602 has a brightness control resistor R2 on the periphery. The pins 9 and 10 of the chip AD7150 are connected to the pins 7 and 6 of the STC12LE5204AD respectively.

In this embodiment, the chip AD7150 and the microcontroller STC12LE5204AD are powered by 3.3V, and the liquid crystal LCD1602 is powered by 5V.

The working principle of the utility model is that the banknote is sandwiched between the flat plate I (2) and the flat plate II (3). How much is related, the more banknotes the smaller the C2 value, the relationship is a monotonic function; the capacitance value of C2 is converted into a digital value through the chip AD7150, and the single chip (5) processes the digital value to obtain the number of banknotes and sends it to the display (7) to display it. Switch between currencies of different denominations through SW3 during measurement;

Further, the operation process is to sandwich the banknotes to be counted between the flat panel I (2) and the flat panel II (3), press SW3 to switch the currency of the corresponding denomination, press SW2 to measure, and observe the display (7) to obtain the result of the number of banknotes .

Claims (4)

1. A clip-type fast money counter, characterized by comprising a fork-shaped clip (1), a flat plate I (2), a flat plate II (3), a capacitance conversion circuit (4); the flat plate I (2) and the flat plate II (3) It is fixed on the clip of the fork clamp (1); the flat plate I (2) and the flat plate II (3) constitute a capacitor, which is electrically connected to the capacitance conversion circuit (4). 2. A clip-type fast money counter according to claim 1, characterized in that the fork-shaped clip (1) is made of plastic, and the right side of the fork is connected with a spring (1-1), the function of which is to connect the right side of the fork Clamping; the fork head of the fork clamp (1) has hinge I (1-2) and hinge II (1-3); plate I (2) is fixed on hinge I (1-2), plate I (2) ) can be rotated at a small angle; the plate II (3) is fixed on the hinge II (1-3), and the plate II (3) can be rotated at a small angle. 3 . The clip-type fast money counter according to claim 1 , wherein the flat plate I ( 2 ) and the flat plate II ( 3 ) are made of single-sided copper-clad plates, and the flat plate I ( 2 ) is provided with an electrode I 3 . (2-1), Plate II (3) is provided with Electrode II (3-1), Electrode I (2-1) and Electrode II (3-1) form a capacitor C2. 4. A clip-type fast money counter according to claim 1 or 3, characterized in that the capacitance conversion circuit (4) adopts a chip AD7150, and the electrode I (2-1) is connected to the pin 4 of the chip AD7150, Electrode II (3-1) is connected to pin 6 of the chip AD7150; the chip AD7150 converts the capacitance value of capacitor C2 into a digital value.

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