Wireless sensing device and wireless network sensing system

• US 7,859,405 B2
• Filed: 01/02/2008
• Issued: 12/28/2010
• Est. Priority Date: 01/05/2007
• Status: Expired due to Fees

• Current Assignee: Delta Electronics Incorporated
• Original Assignee: Delta Electronics Incorporated
• Inventors: Liu, Su-Fen, Tang, Min-Tsung
• Primary Examiner(s): GOINS, DAVETTA WOODS
• Application Number:
  US11/968,547
• Publication Number:
  US 20080165019A1
• Time in Patent Office: 1,091 Days
• Field of Search: 340/539.26, 340/539.1, 340/539.21, 340/539.22, 340/539.24, 340/635, 340/636.16, 340/636.17, 340/636.1, 370/338
• US Class Current: 340/539.26
• CPC Class Codes: H04Q 2209/43 using wireless personal area networks [WPAN], e.g. 802.15, 802.15.1, 802.15.4, Bluetooth or ZigBee
• CPC Class Codes: H04Q 9/00 Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom

Abstract

A wireless sensing device includes a processing module, a wireless communication module, at least one sensing element, a power module and a power-monitoring module. The wireless communication module is electrically connected with the processing module to transmit or receive a wireless communication signal. The sensing element is electrically connected with the processing module to transmit a sensing signal to the processing module. The power module is electrically connected with and supplies a power to the processing module, the wireless communication module and the sensing element. The power-monitoring module is electrically connected with the processing module and the power module to transmit a power-monitoring signal to the processing module.

Claims

1. A wireless sensing device comprising:

a processing module;

a wireless communication module electrically connected with the processing module to transmit or receive a wireless communication signal;

at least one sensing element electrically connected with the processing module to transmit a sensing signal to the processing module;

a power module electrically connected with and supplying a power to the processing module, the wireless communication module and the sensing element; and

a power-monitoring module electrically connected with the processing module and the power module to transmit a power-monitoring signal to the processing module,

wherein the wireless communication module comprises a base band circuit and a radio frequency circuit, the base band circuit provides connection establishment and elimination, signal encoding, packet processing and frequency hopping control, and the radio frequency circuit provides carrier synthesis, signal reception and signal transmission.

2. The wireless sensing device according to claim 1, wherein the wireless communication signal satisfies an IEEE 802.15.4 protocol.

3. The wireless sensing device according to claim 1, wherein the sensing element is a temperature sensor, a humidity sensor or a photosensor.

4. The wireless sensing device according to claim 1, wherein the power is a DC power.

5. The wireless sensing device according to claim 1, wherein the power module has a battery and/or an AC/DC converter.

6. The wireless sensing device according to claim 1, wherein the wireless communication module has an antenna, a build-in antenna or an external antenna.

7. The wireless sensing device according to claim 1, wherein the processing module has a transmission interface, a universal asynchronous receiver/transmitter (UART), an inter-integrated circuit (I2C) bus or a serial peripheral interface (SPI) for communicating with other peripheral devices.

8. The wireless sensing device according to claim 1, further comprising:

a system procedure monitoring module electrically connected with the processing module to transmit a procedure monitoring signal to the processing module.

9. The wireless sensing device according to claim 8, wherein the system procedure monitoring module is a watchdog timer chip.

10. The wireless sensing device according to claim 1, further comprising a memory electrically connected with the processing module.

11. The wireless sensing device according to claim 1, further comprising a crystal oscillator electrically connected with the processing module.

12. The wireless sensing device according to claim 1, being applied to a Zigbee wireless communication technology.

13. The wireless sensing device according to claim 1, wherein the processing module comprises a central processing unit (CPU) or a micro-controller unit.

14. The wireless sensing device according to claim 1, wherein the processing module and the wireless communication module are constructed in different chips or a single chip.

15. A wireless network sensing system having a plurality of wireless sensing devices for transmitting or receiving a wireless communication signal therebetween, each of the wireless sensing devices comprising:

a processing module;

a wireless communication module electrically connected with the processing module to transmit or receive the wireless communication signal;

at least one sensing element electrically connected with the processing module to transmit a sensing signal to the processing module;

a power module electrically connected with and supplying a power to the processing module, the wireless communication module and the sensing element; and

a power-monitoring module electrically connected with the processing module and the power module to transmit a power-monitoring signal to the processing module,

wherein the wireless communication module comprises a base band circuit and a radio frequency circuit, the base band circuit is in charge of connection establishment and elimination, signal encoding, packet processing and frequency hopping control and the radio frequency circuit is in charge of carrier synthesis, signal reception and signal transmission.

16. The wireless network sensing system according to claim 15, wherein the wireless communication signal satisfies an IEEE 802.15.4 protocol.

17. The wireless network sensing system according to claim 15, wherein the wireless sensing devices are arranged in a star-like, net-like or tree-like topology.

18. The wireless network sensing system according to claim 17, wherein when the wireless sensing devices are arranged in the net-like topology, the wireless network sensing system is capable of supporting up to 65536 end devices.

19. The wireless network sensing system according to claim 15, wherein the sensing element is a temperature sensor, a humidity sensor or a photosensor.

20. The wireless network sensing system according to claim 15, wherein the power is a DC power.

21. The wireless network sensing system according to claim 15, wherein the power module has a battery and/or an AC/DC converter.

22. The wireless network sensing system according to claim 15, wherein the wireless communication module has an antenna, a build-in antenna or an external antenna.

23. The wireless network sensing system according to claim 15, wherein the processing module has a transmission interface, a universal asynchronous receiver/transmitter (UART), an inter-integrated circuit (I2C) bus or a serial peripheral interface (SPI) for communicating with other peripheral devices.

24. The wireless network sensing system according to claim 15, wherein each of the wireless sensing devices further comprises:

a system procedure monitoring module electrically connected with the processing module to transmit a procedure monitoring signal to the processing module;

a memory electrically connected with the processing module; and

a crystal oscillator electrically connected with the processing module.

25. The wireless network sensing system according to claim 15, wherein any one of the wireless sensing devices is capable of communicating with the other wireless sensing devices bi-directionally.

26. The wireless network sensing system according to claim 15, wherein the processing module comprises a central processing unit (CPU) or a micro-controller unit.

27. The wireless network sensing system according to claim 15, wherein the processing module and the wireless communication module are constructed in different chips or a single chip.