CN204481780U - A kind of haptic excitation signal generator with safety circuit - Google Patents
A kind of haptic excitation signal generator with safety circuit Download PDFInfo
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- CN204481780U CN204481780U CN201520181168.7U CN201520181168U CN204481780U CN 204481780 U CN204481780 U CN 204481780U CN 201520181168 U CN201520181168 U CN 201520181168U CN 204481780 U CN204481780 U CN 204481780U
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Abstract
The utility model relates to a kind of haptic excitation signal generator with safety circuit, belongs to a kind of haptic excitation signal generator.Comprise communication interface, signal generator, power amplifier and safety circuit; this safety circuit is used for voltage or the electric current of limiting overload; ensure the safety of human body and external equipment; described safety circuit comprises signal input part, overvoltage crowbar, current-limiting protection circuit and signal output part; overvoltage crowbar realizes the effect of haptic excitation signal overvoltage protection, and current-limiting protection circuit realizes haptic excitation signal code restriction.The utility model advantage is novel structure, is limited by the protection of safety circuit, can provide suitable haptic excitation signal for haptic device, avoids too high voltages and super-high-current to cause damage to human body and external equipment.
Description
Technical field
The utility model relates to circuit protection field, is specifically related to a kind of haptic excitation signal generator with safety circuit.
Background technology
Tactile sense reproduction can be behaved provides more true and interactive experience intuitively, earn widespread respect, tactile sense reproduction is combined with human-computer interaction technologies such as the Conventional visual sense of hearings, it can improve the sense of reality and the feeling of immersion of virtual reality system in interactive process, also can improve the interactive efficiency in interactive process simultaneously.Tactile sense reproduction technology based on mechanical force is difficult to apply on portable mobile terminal due to equipment heaviness, and electrostatic force tactile sense reproduction technology is generally considered the main mode realizing tactile representation system at present.
Haptic excitation signal generator is the important component part of electrostatic force tactile representation device, for generation of multiple high pressure haptic excitation signal, in order to prevent, haptic excitation signal voltage is too high punctures external equipment, or haptic excitation signal code is excessive, damage tissue, the safety measure of haptic excitation signal generator is indispensable.
Summary of the invention
The utility model provides a kind of haptic excitation signal generator with safety circuit, and to solve, haptic excitation signal generator generation haptic excitation signal voltage is too high or electric current is excessive to human body and the hurtful problem of external equipment.
A kind of haptic excitation signal generator with safety circuit; comprise the communication interface, signal generator, power amplifier and the safety circuit that are linked in sequence; the wherein sense of touch command information that sends for receiving host computer of communication interface; signal generator is used for generating corresponding haptic excitation signal according to command information; power amplifier is used for carrying out power amplification to haptic excitation signal; safety circuit is used for the haptic excitation signal after to amplification and carries out overvoltage and current-limiting protection, ensures the safety of human body and external equipment.
Described safety circuit, comprises overvoltage crowbar, current-limiting protection circuit:
Described overvoltage crowbar comprises electric fuse F, voltage-stabiliser tube Vz, resistance R1 and controlled diode T, described input signal rectifies pole, electric fuse F, voltage-stabiliser tube Vz, resistance R1, input signal end negative pole are sequentially connected in series composition loop, controlled diode T is parallel-connected to the two ends that voltage-stabiliser tube Vz and resistance R1 forms branch road, and the common port of voltage-stabiliser tube Vz and resistance R1 is connected to the controlled end of controlled diode T;
Described current-limiting protection circuit comprises resistance R2, resistance R3, resistance R4, resistance R5, triode P1, with field effect transistor P2, described output signal end positive pole, resistance R2, resistance R3, output signal end negative pole is sequentially connected in series composition loop, described resistance R4, triode branch circuit parallel connection that P1 is formed is connected to resistance R2 and resistance R3 forms branch road two ends, the common port of resistance R2 and resistance R3 is connected to the base terminal of triode P1, described field effect transistor P2 and resistance R5 is connected in series formed branch circuit parallel connection and is connected to the two ends that described resistance R4 and triode P1 is connected in series formed branch road, the common port of resistance R4 and triode P1 is connected to field effect transistor P2 source terminal,
The resistance R2 of described current-limiting protection circuit and resistance R3 form the two ends that branch circuit parallel connection is connected to controlled diode T.
The utility model has the advantages that novel structure; both overvoltage protection can be realized; also current-limiting protection can be realized; there is provided safety guarantee can to human body and external equipment; the voltage threshold of overvoltage protection can also be set according to the voltage-stabiliser tube of overvoltage crowbar; also Limited Current value can be set according to the field effect transistor of current limit circuit and resistance, more accurately, flexibly, safety.
Accompanying drawing explanation
Fig. 1 is schematic block circuit diagram of the present utility model;
Fig. 2 is the circuit theory diagrams of the utility model safety circuit.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described:
As shown in Figure 1; comprise the communication interface 101, signal generator 102, power amplifier 103 and the safety circuit 104 that are linked in sequence; the sense of touch command information that communication interface 101 sends for receiving host computer; signal generator 102 is for generating corresponding haptic excitation signal according to command information; power amplifier 103 is for carrying out power amplification to haptic excitation signal; safety circuit 104, for carrying out overvoltage and current-limiting protection to the haptic excitation signal after amplification, ensures the safety of human body and external equipment.
As shown in Figure 2, safety circuit 104 comprises overvoltage crowbar 10401, current-limiting protection circuit 10402, described overvoltage crowbar comprises electric fuse F, voltage-stabiliser tube Vz, resistance R1 and controlled diode T, described input signal rectifies pole, electric fuse F, voltage-stabiliser tube Vz, resistance R1, input signal end negative pole are sequentially connected in series composition loop, controlled diode T is parallel-connected to the two ends that voltage-stabiliser tube Vz and resistance R1 forms branch road, and the common port of voltage-stabiliser tube Vz and resistance R1 is connected to the controlled end of controlled diode T, described current-limiting protection circuit comprises resistance R2, resistance R3, resistance R4, resistance R5, triode P1, with field effect transistor P2, described output signal end positive pole, resistance R2, resistance R3, output signal end negative pole is sequentially connected in series composition loop, described resistance R4, triode branch circuit parallel connection that P1 is formed is connected to resistance R2 and resistance R3 forms branch road two ends, the common port of resistance R2 and resistance R3 is connected to the base terminal of triode P1, described field effect transistor P2 and resistance R5 is connected in series formed branch circuit parallel connection and is connected to the two ends that described resistance R4 and triode P1 is connected in series formed branch road, the common port of resistance R4 and triode P1 is connected to field effect transistor P2 source terminal, the resistance R2 of current-limiting protection circuit and resistance R3 form the two ends that branch circuit parallel connection is connected to controlled diode T.
Claims (2)
1. one kind has the haptic excitation signal generator of safety circuit; comprise the communication interface, signal generator and the power amplifier that are linked in sequence; the wherein sense of touch command information that sends for receiving host computer of communication interface; signal generator is used for generating corresponding haptic excitation signal according to command information; power amplifier is used for carrying out power amplification to haptic excitation signal; it is characterized in that safety circuit is connected with power amplifier, this safety circuit is used for the haptic excitation signal after to amplification and carries out overvoltage and current-limiting protection.
2. a kind of haptic excitation signal generator with safety circuit according to claim 1, is characterized in that: described safety circuit comprises overvoltage crowbar, current-limiting protection circuit:
Described overvoltage crowbar comprises electric fuse F, voltage-stabiliser tube Vz, resistance R1 and controlled diode T, described input signal rectifies pole, electric fuse F, voltage-stabiliser tube Vz, resistance R1, input signal end negative pole are sequentially connected in series composition loop, controlled diode T is parallel-connected to the two ends that voltage-stabiliser tube Vz and resistance R1 forms branch road, and the common port of voltage-stabiliser tube Vz and resistance R1 is connected to the controlled end of controlled diode T;
Described current-limiting protection circuit comprises resistance R2, resistance R3, resistance R4, resistance R5, triode P1, with field effect transistor P2, described output signal end positive pole, resistance R2, resistance R3, output signal end negative pole is sequentially connected in series composition loop, described resistance R4, triode branch circuit parallel connection that P1 is formed is connected to resistance R2 and resistance R3 forms branch road two ends, the common port of resistance R2 and resistance R3 is connected to the base terminal of triode P1, described field effect transistor P2 and resistance R5 is connected in series formed branch circuit parallel connection and is connected to the two ends that described resistance R4 and triode P1 is connected in series formed branch road, the common port of resistance R4 and triode P1 is connected to field effect transistor P2 source terminal,
The resistance R2 of described current-limiting protection circuit and resistance R3 form the two ends that branch circuit parallel connection is connected to controlled diode T.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520181168.7U CN204481780U (en) | 2015-03-29 | 2015-03-29 | A kind of haptic excitation signal generator with safety circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520181168.7U CN204481780U (en) | 2015-03-29 | 2015-03-29 | A kind of haptic excitation signal generator with safety circuit |
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| CN204481780U true CN204481780U (en) | 2015-07-15 |
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| CN201520181168.7U Active CN204481780U (en) | 2015-03-29 | 2015-03-29 | A kind of haptic excitation signal generator with safety circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020258227A1 (en) * | 2019-06-28 | 2020-12-30 | 瑞声声学科技(深圳)有限公司 | Actuator excitation signal processing method and apparatus, computer device, and storage medium |
-
2015
- 2015-03-29 CN CN201520181168.7U patent/CN204481780U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020258227A1 (en) * | 2019-06-28 | 2020-12-30 | 瑞声声学科技(深圳)有限公司 | Actuator excitation signal processing method and apparatus, computer device, and storage medium |
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