Circuit structure for reducing power consumption of ticket vending machine and recharging machine

Abstract

The utility model discloses a circuit structure for reducing power consumption of a ticket vending machine and a recharging machine, an inductor control circuit board and a relay are arranged between a power supply board and a constant current boost circuit board, and two groups of infrared induction circuits are integrated on the inductor control circuit board. The power input ends of the infrared induction circuits are electrically connected with the power panel, the power output ends of the infrared induction circuits are electrically connected with the relay, and each infrared induction circuit is composed of a power chip, an infrared induction loop, a power input circuit and a power output circuit. Compared with the prior art, the backlight light bar and the liquid crystal screen are independently supplied with power, the infrared sensor control circuit board is designed, whether a passenger operates in front or not can be accurately determined through cooperation of the two infrared sensors, the mistaken touch condition is avoided, and when it is not detected that the passenger operates the liquid crystal screen, the backlight light bar and the liquid crystal screen are powered independently. The operation time of the liquid crystal screen is reduced by turning off the backlight light bar, the power consumption of the liquid crystal screen is remarkably reduced, and the operation cost and the maintenance and replacement frequency are reduced.

Description

TECHNICAL FIELD

[0001] The utility model discloses electronic field, and especially relates to a circuit structure for reducing power consumption of automatic ticket vending machine and recharge machine. BACKGROUND

[0002] At present, the passenger operation liquid crystal screen of automatic ticket vending machine (TVM) and automatic recharge machine (CVM) in the automatic fare collection system (AFC) is displayed all day and night, but the content displayed in most time has no important information, and economic benefits cannot be created. This phenomenon not only reduces the service life of the liquid crystal screen, but also greatly wastes electric power resources. CONTENT OF THE UTILITY MODEL

[0003] The utility model discloses electronic field, and especially relates to a circuit structure for reducing power consumption of automatic ticket vending machine and recharge machine.

[0004] In order to realize the above-mentioned purpose, the utility model adopts the technical scheme: a circuit structure for reducing power consumption of automatic ticket vending machine and recharge machine, including liquid crystal screen, the backlight bar of liquid crystal screen, power board and constant current boost board, the power board is connected with the backlight bar of liquid crystal screen through constant current boost board, be equipped with inductor control circuit board and relay between power board and constant current boost circuit board, two groups of infrared induction circuit are integrated on the inductor control circuit board, the power input end of infrared induction circuit all is connected with power board, and the power output end all is connected with relay, infrared induction circuit all is composed of power chip, infrared induction loop, power input circuit and power output circuit, power input circuit and power output circuit are connected with power chip power signal end respectively, be equipped with signal sampling loop between power chip and infrared induction loop.

[0005] As preferred, the infrared induction loop is composed of an infrared receiver chip, a transistor Q2 and a current-limiting resistor R2, and the signal output end of the infrared receiver chip is connected to the signal input end of the power chip through the transistor Q2 and the current-limiting resistor R2 in sequence.

[0006] As preferred, it further includes a sampling capacitor C2 and a sampling resistor R6, the infrared receiver chip, the sampling capacitor C2 and the sampling resistor R6 are connected in series to form a signal sampling loop, and the power chip collects the signal sampling loop through a signal collection end.

[0007] As preferred, a voltage stabilizing loop is arranged on the power input circuit, the voltage stabilizing loop is composed of a capacitor C5, a voltage stabilizing diode D1 and a voltage stabilizing triode U2, the capacitor C5 and the voltage stabilizing diode D1 are connected in parallel, and the output of the voltage stabilizing triode U2 is connected to the power input ends of the power chip and the infrared receiver chip.

[0008] As preferred, a current-limiting resistor R4, an adjustable resistor RP1, a voltage-stabilizing capacitor C1 and a voltage-stabilizing triode Q1 are connected in series on the power supply output circuit, and the power supply output circuit is arranged in parallel with the infrared induction loop.

[0009] As preferred, an indicator lamp LED1 and an indicator lamp protection resistor R8 are further connected in series on the power supply output circuit.

[0010] As preferred, the power supply chip is an AS1015 voltage-stabilizing power supply chip.

[0011] As preferred, the infrared receiving head chip is of a model HS0038B.

[0012] As preferred, a master control board is further included, and the power supply output end of the power supply board is divided into two paths, one of which is used to supply power to the master control board and the other of which is used to supply power to the inductor control circuit board.

[0013] Compared with the prior art, the utility model has the advantages that the utility model improves the existing backlight strip power supply circuit, separately supplies power to the liquid crystal screen, designs an infrared inductor control circuit board, and is very convenient to install and transform, and through the cooperation of two infrared inductors, it can accurately determine whether a passenger is operating in front, avoids the occurrence of false touch, and when no passenger is detected to operate, the backlight strip is turned off to reduce the operation time of the liquid crystal screen, prolong the service life, significantly reduce the power consumption of the liquid crystal screen, reduce the operation cost and the maintenance and replacement frequency. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a power supply principle block diagram of the liquid crystal screen of the utility model;

[0015] Figure 2 It is a power supply principle block diagram of the liquid crystal screen of the existing automatic ticket vending machine and recharge machine;

[0016] Figure 3 It is a circuit principle block diagram of the inductor control circuit board of the utility model;

[0017] Figure 4 It is a circuit structure diagram of the infrared induction circuit of the utility model. DETAILED DESCRIPTION

[0018] The utility model will be further described below, the backlight strip on the original automatic ticket vending machine and recharge machine liquid crystal screen is powered by the master control board, referring to Figure 2 The utility model improves the existing backlight strip power supply circuit, separately supplies power to the liquid crystal screen, and designs an infrared inductor control circuit board, and the specific implementation is as follows:

[0019] The utility model relates to a kind of circuit structure for reducing power consumption of automatic ticket vending machine and recharge machine, see Figure 1 、 Figure 3 And Figure 4 A kind of circuit structure for reducing power consumption of automatic ticket vending machine and recharge machine, including liquid crystal screen, liquid crystal screen's backlight lamp strip, power board and constant current boost board, the power board and constant current boost circuit board between being equipped with inductor control circuit board and relay, two groups of infrared induction circuit are integrated on the inductor control circuit board, the power input end of the infrared induction circuit is electrically connected with power board, power output end is electrically connected with relay, the infrared induction circuit is composed of power chip, infrared induction loop, power input circuit and power output circuit, the power input circuit and power output circuit are connected with power chip power signal end respectively, signal sampling loop is equipped between the power chip and infrared induction loop.

[0020] The utility model two groups of infrared induction circuit are integrated on inductor control circuit board, two groups of infrared induction circuit are two infrared receiving head chips, the infrared sensor on chip can detect the different state action of passenger respectively simultaneously, one group can carry out human body obstruction detection, whether the person is identified in front of screen operation, if there is then its backlight lamp strip is opened by power chip control, if there is not then backlight lamp strip is closed;Meanwhile, another group of infrared induction circuit can carry out human body movement detection, if the person is detected to move in the vicinity of liquid crystal screen, and another group of infrared sensor is detected to be obstructed, then it proves that someone is operating, and backlight lamp strip is opened;If the person is detected to move in the vicinity of liquid crystal screen, but another group of sensor is not obstructed, then it proves that only someone is passing by, and backlight is not opened. There is no blind area by using two infrared sensors cooperatively, and it will not be mistaken because someone behind leaves, and it will not be suddenly opened because passenger passes by. When passenger is not detected to operate, backlight lamp strip is closed to reduce the running time of liquid crystal screen, prolong its service life, significantly reduce the power consumption of liquid crystal screen, reduce operating cost and maintenance and replacement frequency.

[0021] Because two groups of infrared induction circuit are designed, circuit positive and negative signal is opposite, therefore relay is added, positive and negative pole conversion can be carried out by relay, the relay can adopt double-pole double-throw relay, two circuits can be controlled simultaneously by controlling two coils, realize the conversion of positive and negative signal.

[0022] The infrared induction loop is composed of infrared receiving head chip, triode Q2 and current-limiting resistor R2, the signal output end of the infrared receiving head chip is sequentially communicated with the signal input end of power chip through triode Q2 and current-limiting resistor R2, human infrared detection can be carried out through infrared induction loop, whether someone is identified in front of screen.

[0023] Also included are a sampling capacitor C2 and a sampling resistor R6, which are connected in series to form a signal sampling loop, and the power supply chip collects the signal sampling loop through a signal collection terminal.

[0024] The power supply input circuit is provided with a voltage stabilizing loop, which is composed of a capacitor C5, a voltage stabilizing diode D1 and a voltage stabilizing triode U2.

[0025] The power supply output circuit is provided with a current limiting resistor R4, an adjustable resistor RP1, a voltage stabilizing capacitor C1 and a voltage stabilizing triode Q1, which are connected in series.

[0026] The power supply output circuit is also provided with an indicator lamp LED1 and an indicator lamp protection resistor R8, which can display the power-on state.

[0027] AS1015 voltage stabilizing power supply chip parameters:

[0028] Input voltage range: 3.6V to 23V;

[0029] Output current: maximum 5A;

[0030] Output voltage range: adjustable, the minimum can be set to 0.8V, and the maximum can reach the input voltage VIN;

[0031] Oscillation frequency: fixed at 300kHz, which helps efficient conversion and reduces the size of external components

[0032] The backlight bar requires a large current when turned on, so as a preferred solution, the power supply chip uses an AS1015 voltage stabilizing power supply chip.

[0033] The infrared receiver chip is model HS0038B, which can cover the operation area before TVM and CVM, ensuring accurate detection of approaching passengers, high sensitivity adjustment, and adjustment of sensing sensitivity according to the actual environment to avoid false triggering or missed triggering.

[0034] The power output end of the power board is divided into two paths, one path is used for power supply of the master control board, and the other path is used for power supply of the inductor control circuit board, so that the backlight strip of the liquid crystal screen can be independently powered and is not affected by the master control board, and the power supply of the inductor control circuit board can be selected as an internal battery or power taken from the power board of the TVM / CVM, so as to ensure stable operation.

[0035] The above has carried out detailed introduction to the circuit structure for reducing power consumption of the automatic ticket vending machine and the recharge machine, the principle and the implementation mode of the utility model are described by applying specific examples in the paper, the above embodiment is only used for helping understanding the method and the core thought of the utility model; simultaneously, for the general technical personnel in the field, according to the thought of the utility model, there will be changes in the specific implementation mode and the application range, the change and the improvement of the utility model will be possible, and will not exceed the conception and the range defined by the additional claims, according to the above, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A circuit structure for reducing power consumption in automatic ticket vending machines and recharge machines, comprising an LCD screen, a backlight strip for the LCD screen, a power supply board, and a constant current boost board, characterized in that: The inductor control circuit board is provided between the power supply board and the constant current boost circuit board, and two groups of infrared induction circuits are integrated on the inductor control circuit board, the power input ends of the infrared induction circuits are electrically connected with the power supply board, and the power output ends are electrically connected with the relay, the infrared induction circuit is composed of a power chip, an infrared induction loop, a power input circuit and a power output circuit, the power input circuit and the power output circuit are connected with the power signal end of the power chip, and a signal sampling loop is arranged between the power chip and the infrared induction loop.

2. The circuit structure for reducing power consumption of a ticket vending machine and a ticket refilling machine according to claim 1, characterized in that: The infrared induction loop is composed of an infrared receiver chip, a transistor Q2 and a current limiting resistor R2, the signal output end of the infrared receiver chip is sequentially communicated with the signal input end of the power chip through the transistor Q2 and the current limiting resistor R2.

3. The circuit structure for reducing power consumption of a ticket vending machine and a ticket refilling machine according to claim 2, characterized in that: The infrared receiver chip, the sampling capacitor C2 and the sampling resistor R6 are connected in series to form a signal sampling loop, and the power chip collects the signal sampling loop through the signal collection end.

4. The circuit structure for reducing power consumption of a ticket vending machine and a ticket refilling machine according to claim 2, wherein: A voltage stabilizing loop is arranged on the power input circuit, the voltage stabilizing loop is composed of a capacitor C5, a voltage stabilizing diode D1 and a voltage stabilizing triode U2, the capacitor C5 and the voltage stabilizing diode D1 are connected in parallel, and the output of the voltage stabilizing triode U2 is communicated with the power input ends of the power chip and the infrared receiver chip.

5. The circuit structure for reducing power consumption of a ticket vending machine and a ticket refilling machine according to claim 2, characterized in that: A current limiting resistor R4, an adjustable resistor RP1, a voltage stabilizing capacitor C1 and a voltage stabilizing triode Q1 are arranged on the power output circuit, the current limiting resistor R4, the adjustable resistor RP1, the voltage stabilizing capacitor C1 and the voltage stabilizing triode Q1 are connected in series, and the power output circuit is connected in parallel with the infrared induction loop.

6. The circuit structure for reducing power consumption of a ticket vending machine and a ticket refilling machine according to claim 5, wherein: The power output circuit is also connected in series with an indicator lamp LED1 and an indicator lamp protection resistor R8.

7. The circuit structure for reducing power consumption of a ticket vending machine and a ticket refilling machine according to claim 1, wherein: The power chip is an AS1015 voltage stabilizing power chip.

8. The circuit structure for reducing power consumption of a ticket vending machine and a ticket refilling machine according to claim 2, wherein: The infrared receiver chip is HS0038B.

9. The circuit structure for reducing power consumption of a ticket vending machine and a ticket refilling machine according to claim 1, wherein: A main control board is further included, the power output end of the power supply board is divided into two paths, one path is used for power supply of the main control board, and the other path is used for power supply of the inductor control circuit board.

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