CN202315268U - Sensor circuit of automatic mahjong machine - Google Patents
Sensor circuit of automatic mahjong machine Download PDFInfo
- Publication number
- CN202315268U CN202315268U CN201120469374XU CN201120469374U CN202315268U CN 202315268 U CN202315268 U CN 202315268U CN 201120469374X U CN201120469374X U CN 201120469374XU CN 201120469374 U CN201120469374 U CN 201120469374U CN 202315268 U CN202315268 U CN 202315268U
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Abstract
The utility model discloses a sensor circuit of an automatic mahjong machine, comprising a sensor power supply, a reflection type photoelectric sensor and a main chip, wherein the sensor power supply and the reflection type photoelectric sensor are connected through a switch element, the main chip is used for controlling the switch element, an output end of the reflection type photoelectric sensor is connected with a light distance adjusting circuit; and a feedback circuit is arranged between the output end of the light distance adjusting circuit and the output end of the reflection type photoelectric sensor. According to the sensor circuit disclosed by the utility model, the feedback circuit is arranged at the output end of the sensor circuit, so that the circuit gets out of a detection range of the reflection type photoelectric sensor after mahjong pieces collide, so as to instantly generate an output signal to delay and output a detection signal which is the same as the detection signal of the last moment; and therefore, the repeated mounting is avoided.
Description
Technical field
The utility model relates to a kind of sensor circuit, relates in particular to a kind of sensor circuit of automatic mahjong-playing machine.
Background technology
The reflective photoelectric sensor of existing automatic mahjong-playing machine is in "on" position always when work; The one side consumed power; The light emitting diode of more crucial is reflective photoelectric sensor can occur decaying after long-time energising, and luminous intensity dies down, thereby influences distance of reaction.
Chinese patent 201020124247.1 discloses a kind of automatic mahjong-playing machine and has seen board light eye working power control circuit; Comprise and see board light eye module, single-chip microcomputer, light eye working power and switch control element; See that the light eye signal that board light eye module will receive is transferred to single-chip microcomputer; Single-chip microcomputer is controlled the on off state of light eye working power through the switch control element, and the light eye working power after the control output is connected to and sees board light eye module.
Reflective photoelectric sensor is mainly used in and detects mah-jong pieces and whether arrive assigned address, and there is maximum limit in its detection distance, when mah-jong pieces be sent to greatest limit apart from the time; Reflective photoelectric sensor just can be sensed corresponding mah-jong pieces; But because in the showdown process, adjacent mah-jong pieces can bump, and cause detected mah-jong pieces to be drawn back; Next the formula photoelectric sensor that can be reflected detects once more, causes repeat count.
Summary of the invention
The utility model provides a kind of sensor circuit of automatic mahjong-playing machine, causes the problem of the same mah-jong pieces of reflective photoelectric sensor duplicate detection to solve in the existing sensor circuit owing to mah-jong pieces bump.
A kind of sensor circuit of automatic mahjong-playing machine; Comprise through the probe power of switch element connection and the master chip of reflective photoelectric sensor and gauge tap element; The output of described reflective photoelectric sensor is connected with light apart from regulating circuit, and described light is provided with feedback circuit between the output of the output of regulating circuit and reflective photoelectric sensor.
Described light comprises first triode, adjustable resistance and the 6th resistance apart from regulating circuit; Adjustable resistance one end connects the output of reflective photoelectric sensor; The other end connects the emitter stage of first triode through the 6th resistance; First transistor base connects the output of reflective photoelectric sensor, grounded emitter, and current collection is output very.
Described feedback circuit comprises second resistance, the 4th resistance, the 5th resistance and second triode; Second resistance, one end connects the output of reflective photoelectric sensor; The other end connects the colelctor electrode of second triode, and the 4th resistance one end connects the output of light apart from regulating circuit, and the other end connects probe power through the 5th resistance; The emitter stage of second triode connects probe power, and base stage connects the link node of the 4th resistance and the 5th resistance.
Comprise first indicator lamp, first indicator lamp, one end connects the colelctor electrode of second triode through the 3rd resistance.
Comprise Hall element, Hall element comprises three pins, and first pin connects probe power, the second pin ground connection, and three-prong is a signal output part.
The utility model sensor circuit output is provided with feedback circuit, makes circuit break away from reflective photoelectric sensor detection range moment generation output signal lag in mah-jong pieces collision back, exports the detection signal consistent with previous moment, has avoided repeat count.
Description of drawings
Fig. 1 is the module diagram of the utility model circuit;
Fig. 2 is the structural representation of the utility model power control circuit;
Fig. 3 is the structural representation of the utility model photoelectric sensor circuit;
Fig. 4 is the structural representation of the utility model Hall element circuit.
The specific embodiment
As shown in Figure 1; A kind of sensor circuit of automatic mahjong-playing machine; Comprise master chip 1, probe power 2, switch element 3, Hall element U2, reflective photoelectric sensor U1; Hall element U2, reflective photoelectric sensor U1 are connected master chip 1 gauge tap element 3 through switch element 3 with probe power 2.Reflective photoelectric sensor U1 output connects light apart from regulating circuit 4, is provided with feedback circuit 5 between them.
Power control circuit as shown in Figure 2 comprises the triode Q1 as switch element, and triode Q1 base stage connects master chip 1 through resistance R 7, emitter stage connected system power supply VCC, and colelctor electrode connects power supply VCC2, and wherein power supply VCC2 is a probe power.Resistance R 8 one end connected system power supply VCC, the other end connects the base stage of triode Q1, and power supply VCC2 is also through capacitor C 1 ground connection.
Photoelectric sensor circuit as shown in Figure 3; Comprise reflective photoelectric sensor U1, model is TCRT5000, comprises light emitting diode and photodiode; Wherein light emitting diode one end is connected with power supply VCC2 through current-limiting resistance R1; Other end ground connection, photodiode one end connects power supply VCC2, and the other end is a signal output part.
Light comprises triode Q2, adjustable resistance RP and resistance R 6 apart from regulating circuit 4; Wherein adjustable resistance RP one end connects the output of reflective photoelectric sensor U1; The other end is through the emitter stage of resistance R 6 triode Q2; The base stage of triode Q2 connects the output of reflective photoelectric sensor U1, grounded emitter, and current collection is output very.
Hall element circuit as shown in Figure 4 comprises Hall element U2 (model is W134), and Hall element U2 has three pins; First pin connects power supply VCC2, the second pin ground connection, and three-prong is a signal output part; This circuit also comprises resistance R 9, R10 and the indicator lamp L2 of series connection; Three-prong connects the link node of resistance R 9, R10, indicator lamp L2 one end connected system power supply VCC, and the other end connects resistance R 9.
The operation principle of foregoing circuit is following:
Through adjustable resistance RP; Detection distance that can accommodation reflex formula photoelectric sensor U1, the purpose that feedback circuit is set are in order to circuit output signal certain time-delay to be provided, promptly when mah-jong pieces and reflective photoelectric sensor U1 when taking place to change suddenly; The output signal is consistent before and after can making; Particularly in collision process, break away from reflective photoelectric sensor U1 at mah-jong pieces, circuit can be exported the similar detection signal equally, has avoided repeat count.
Claims (5)
1. the sensor circuit of an automatic mahjong-playing machine; Comprise through the probe power of switch element connection and the master chip of reflective photoelectric sensor and gauge tap element; The output of described reflective photoelectric sensor is connected with light apart from regulating circuit; It is characterized in that described light is provided with feedback circuit between the output of the output of regulating circuit and reflective photoelectric sensor.
2. sensor circuit according to claim 1; It is characterized in that described light comprises first triode, adjustable resistance and the 6th resistance apart from regulating circuit, adjustable resistance one end connects the output of reflective photoelectric sensor; The other end connects the emitter stage of first triode through the 6th resistance; First transistor base connects the output of reflective photoelectric sensor, grounded emitter, and current collection is output very.
3. sensor circuit according to claim 1; It is characterized in that; Described feedback circuit comprises second resistance, the 4th resistance, the 5th resistance and second triode, and second resistance, one end connects the output of reflective photoelectric sensor, and the other end connects the colelctor electrode of second triode; The 4th resistance one end connects the output of light apart from regulating circuit; The other end connects probe power through the 5th resistance, and the emitter stage of second triode connects probe power, and base stage connects the link node of the 4th resistance and the 5th resistance.
4. sensor circuit according to claim 3 is characterized in that, comprises first indicator lamp, and first indicator lamp, one end connects the colelctor electrode of second triode through the 3rd resistance.
5. sensor circuit according to claim 1 is characterized in that, comprises Hall element, and Hall element comprises three pins, and first pin connects probe power, the second pin ground connection, and three-prong is a signal output part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120469374XU CN202315268U (en) | 2011-11-23 | 2011-11-23 | Sensor circuit of automatic mahjong machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120469374XU CN202315268U (en) | 2011-11-23 | 2011-11-23 | Sensor circuit of automatic mahjong machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202315268U true CN202315268U (en) | 2012-07-11 |
Family
ID=46427272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120469374XU Expired - Lifetime CN202315268U (en) | 2011-11-23 | 2011-11-23 | Sensor circuit of automatic mahjong machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202315268U (en) |
-
2011
- 2011-11-23 CN CN201120469374XU patent/CN202315268U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |