CN201204573Y - Wireless passive switch - Google Patents

Abstract

The utility model discloses a wireless passive switch for resolving the problem that the existing wireless switch consumes battery, which is composed of a piezoelectricity transducing unit, a PMU and a wireless emission unit; wherein, the piezoelectricity transducing unit is used to generate voltage and current by epigene action, and output to the PMU; the PMU is used to treat the electricity generated by the piezoelectricity transducing unit in a set time, to obtain required voltage and current, and provide the voltage and current to the wireless emission unit; the wireless emission unit is used to emit wireless signals. The above structure combines the piezoelectricity transducing unit and the PMU reasonably through the PMU by means of the principle that a piezoelectric ceramics deforms by an epigene action to generate current, to make the wireless emission unit work by the electric energy generated by the piezoelectricity transducing unit, thus, energy source is saved greatly and usage cost is nearly null.

Description

The wireless and passive switch

Technical field

The utility model relates to a kind of wireless switching.

Background technology

Existing wireless switching is active mostly, and it is to provide the energy to wireless transmitter module by battery etc. mostly, sends wireless signal by predetermined pattern, receives reprocessing to produce corresponding action by the wireless receiving module in a distant place.This mode of operation is comparatively reliable, is subjected to people's welcome.But because it is active, that is to say that it needs battery etc. that energy is provided, driving follow-up wireless transmitter module, so it needs often to change battery, has increased use cost.

Also have a kind of sound wave to send signal by generations such as clapping hands, knock, move by the wireless receiving module reception processing back generation in a distant place, is this mode as existing acoustic control lamp with regard to what adopt, though this mode is used simple, and need not special wireless launcher and power supply (pond), but its misuse rate is higher, can not be applied to the high place of ask for something.

The utility model content

For overcoming above-mentioned defective, the purpose of this utility model is to provide a kind of simple in structure, wireless and passive switch of need not the battery equal energy source.

For achieving the above object, wireless and passive switch of the present utility model is made up of piezoelectric energy-conversion unit, Power Management Unit and wireless transmitting unit; Wherein,

The piezoelectric energy-conversion unit is in order to be subjected to external force effect generation voltage, electric current and to export Power Management Unit to;

Power Management Unit is handled the voltage and current that obtains requiring in order to the electricity that in official hour the piezoelectric energy-conversion unit is produced, and this voltage and current is offered wireless transmitting unit; And

Wireless transmitting unit is in order to send wireless signal.

Above-mentioned structure, utilize piezoelectric ceramic to be subjected to the external force effect and produce distortion, thereby generation electric current, the principle of voltage, piezoelectric energy-conversion unit and Power Management Unit are carried out organic combination by Power Management Unit, work under the electric energy that makes wireless transmitting unit be produced in the piezoelectric energy-conversion unit, saved the energy widely, making use cost is zero substantially.

Description of drawings

Fig. 1 is the structured flowchart of the utility model wireless and passive switch.

Embodiment

Below in conjunction with accompanying drawing wireless and passive switch of the present utility model is further described.

As shown in Figure 1, wireless and passive switch of the present utility model is made up of piezoelectric energy-conversion unit, Power Management Unit and wireless transmitting unit.Wherein, the piezoelectric energy-conversion unit can be made up of a slice piezoelectric ceramic piece, also can or be composed in series by the parallel connection of multi-disc piezoelectric ceramic piece certainly, in order to be subjected to producing voltage, electric current under the situation of external force; The effect of Power Management Unit is that the voltage that in official hour the piezoelectric energy-conversion unit is produced carries out filtering and/or the voltage and current of processing such as voltage stabilizing and/or energy storage to obtain requiring, therefore its structure can be selected according to the needs of wireless transmitting unit, simply can be as shown in Figure 2, form by resistance-capacitance circuit, can also be as shown in Figure 3, piezoelectric energy-conversion voltage that the unit produces, electric current are handled back output by J1 and J2 input by resistance-capacitance circuit and integrated regulator etc.Wireless transmitting unit can be existing various wireless transmission modes, for example, and infrared, wireless frequency modulation, amplitude modulation emission, ultrasonic wave emission etc.

Claims (1)

1, a kind of wireless and passive switch is characterized in that: be made up of piezoelectric energy-conversion unit, Power Management Unit and wireless transmitting unit; Wherein,

The piezoelectric energy-conversion unit is in order to be subjected to external force effect generation voltage, electric current and to export Power Management Unit to;

Power Management Unit is handled the voltage and current that obtains requiring in order to the electricity that in official hour the piezoelectric energy-conversion unit is produced, and this voltage and current is offered wireless transmitting unit; And

Wireless transmitting unit is in order to send wireless signal.

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