CN102026367B - Device, method and system for testing distance between devices - Google Patents
Device, method and system for testing distance between devices Download PDFInfo
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- CN102026367B CN102026367B CN200910092891.7A CN200910092891A CN102026367B CN 102026367 B CN102026367 B CN 102026367B CN 200910092891 A CN200910092891 A CN 200910092891A CN 102026367 B CN102026367 B CN 102026367B
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Abstract
The invention provides a device, a method and a system for testing distance between devices. The method comprises the steps of: making a virtual wireless network card as the first wireless access point AP, sending a feedback signal to the second device through the first wireless access point AP, and obtaining the distance between the first device and the second device, wherein the distance is calculated by the first device or the second device through the feedback signal. Applying the technology provided by the invention, by making a virtual wireless network card as a new wireless access point AP on the wireless network card, sending a feedback signal through the AP and detecting the distance between the two through the feedback signal, the original network of the devices is not be influenced by transmitting the feedback signal through the new wireless access point AP, and the detection is performed in the network constructed by the first device and the second device, no longer depending on the distance between the third party devices.
Description
Technical field
The present invention relates to equipment location technology, refer to especially the method and system of a kind of equipment, testing equipment spacing.
Background technology
Along with equipment, the particularly extensive use of mobile device, distance between mobile device is measured and had multiple application prospect, for example, in meeting process, apply the desktop projection software on portable computer, by some data projection, during to the other side, concrete which platform of more difficult judgement is only the target machine when front projection, need to identify the title of computer, but this RM is too loaded down with trivial details.
In prior art, can pass through the distance of sound judging distance, but this method is affected by environment larger, substantially infeasible.Although the location technology comparative maturity that WiFi standards system is supported, but need to rely on wireless access points (AP, Access Point) signal strength signal intensity receiving is determined, therefore can only obtain the distance between mobile device and AP, and distance between cannot two mobile devices of Obtaining Accurate.
Inventor is in realizing process of the present invention, find that in prior art, at least there are the following problems: while detecting distance each other between two or more mobile devices, be subject to surrounding environment influence too large, or the technological means adopting while detecting too relies on the support of other third party devices.
Summary of the invention
The method and system that the object of this invention is to provide a kind of equipment, testing equipment spacing, be used for solving prior art, while detecting distance each other between two or more mobile devices, be subject to surrounding environment influence too large, or the technological means adopting while detecting too rely on the defect of the support of other third party devices.
A method for checkout equipment spacing, comprising: a virtual wireless network card is as the first wireless access points AP; By described the first wireless access points AP, send a feedback signal and arrive described the second equipment; The distance of obtaining the first equipment and described the second equipment room described in one, described distance is calculated according to described feedback signal according to described feedback signal or described the second equipment by described the first equipment.
In said method, described the first wireless access points AP is positioned on described the first equipment; Described the first equipment is set up a first network by this first wireless access points AP; And described the first equipment sends described feedback signal in described first network.
In said method, between described the first equipment and described the second equipment, also there is a second network; By described second network and described the second equipment, consult to set up described first network; Negotiations process at least needs to determine the network identity SSID of described first network.
In said method, obtain the distance of the first equipment and described the second equipment room described in, further comprise: by one second wireless access points AP, receive the feedback signal from the second equipment, described the second wireless access points AP is generated by the virtual wireless network card of described the second equipment; Described distance is calculated according to described feedback signal according to described feedback signal or described the second equipment by described the first equipment.
In said method, described feedback signal is specially beacon message; In described the first equipment or described the second equipment, store the corresponding table of distance that records the signal strength signal intensity of described beacon message and the corresponding relation of distance; Described the first equipment or described the second equipment, according to the signal strength signal intensity of described beacon message, are searched the corresponding table of described distance, obtain distance between the two.
In said method, a described virtual wireless network card also comprises as before the first wireless access points AP: select a detection strategy, at least should determine that the main survey side that initiates to detect is the first equipment in described detection strategy, tested side is the second equipment; Described detection strategy also comprises: the frequency of beacon message declaration, always declare cycle, testing time total length, overtime timer length, and confirm to realize time synchronized between the first equipment and the second equipment.
In said method, described in obtain the distance of the first equipment and described the second equipment room described in, further comprise: obtain the distance that described the second equipment calculates according to described feedback signal; Or the described feedback signal of coming according to described the second device forwards calculates described distance.
, comprising: wireless network card control unit, for a virtual wireless network card as the first wireless access points AP; Signal element, for generating feedback signal, this feedback signal arrives described the second equipment by described the first wireless access points AP; Measure range unit, for obtaining the distance of the first equipment and described the second equipment room described in, described distance is calculated according to described feedback signal according to described feedback signal or described the second equipment by described the first equipment.
In the said equipment, also comprise: negotiation element, for by and described the second equipment between a second network, consult to set up a first network, described feedback signal is transmitted in described first network; Described signal element is specially a beacon message unit, for generating beacon message as described feedback signal; The corresponding table unit of distance, be used for storing the corresponding table of a distance, in the corresponding table of described distance, record the signal strength signal intensity of described beacon message and the corresponding relation between distance, according to the signal strength signal intensity of described beacon message, search the corresponding table of described distance, obtain and described the second equipment between distance.
A system for testing equipment spacing, at least comprises: the first equipment and the second equipment, and described the first equipment is main survey side; The virtual wireless network card of described the first equipment is as wireless access points AP; Described the second equipment receives the feedback signal from the first equipment by described wireless access points AP; The second equipment is according to described feedback signal, or described the first equipment described feedback signal next according to the second device forwards, calculates distance between the two.
The technology that application the present embodiment provides, on wireless network card, fictionalize wireless network card as new wireless access points AP, by this AP, send feedback signal, according to this feedback signal, detect both sides' distance, because the wireless access points A by new sends feedback signal, thereby the original network of equipment is unaffected; And in the first equipment and the constructed network of the second equipment, detect, no longer rely on third party device checkout equipment distance each other.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention method flow schematic diagram;
Fig. 2 is the method flow schematic diagram that the embodiment of the present invention is applied to portable computer in meeting;
Fig. 3 is embodiment of the present invention apparatus structure schematic diagram;
Fig. 4 is the system schematic of a kind of testing equipment spacing of the embodiment of the present invention.
Embodiment
For making object of the present invention, technical characterictic and implementation result clearer, below in conjunction with the accompanying drawings and the specific embodiments technical scheme of the present invention is described in detail.In embodiment provided by the invention, based on wireless network card technology, the distance between distinct device is measured.
A method for testing equipment spacing, as shown in Figure 1, comprising:
The technology that application the present embodiment provides, no longer pass through original network checkout equipment distance each other, but on wireless network card, fictionalizing a wireless network card as wireless access points AP, the distance that detects both sides by this AP, is not subject to the impact of surrounding environment.
On the basis of existing embodiment, the invention provides preferred embodiment, technique scheme is improved.
Wireless network card is positioned on the first equipment, thereby the first virtual wireless access points AP of this wireless network card is positioned on the first equipment, the first equipment obtains a distance being calculated according to described feedback signal by the first equipment self or the second equipment, further comprises: obtain the distance value that the second equipment calculates according to described feedback signal; Or the described feedback signal of coming according to the second device forwards calculates described distance value.
Because the second equipment is by the first wireless access points AP receiving feedback signals, therefore between the first equipment and the second equipment, need to set up one for transmitting the network of feedback signal, this network of network sign (SSID, Service Set Identifier, also referred to as service set), for distinguishing with existing network between the two, be called first network.
, the virtual wireless network card of the first equipment also comprises as after the first wireless access points AP: the first equipment and the second equipment are set up a first network by this first wireless access points AP; And described the first equipment sends described feedback signal in described first network.
Shared network is called second network between the two; In this shared second network, the first equipment and the second equipment are held consultation; Negotiations process at least needs a definite concrete network identity SSID, and this SSID should be an operable service set, has concrete value; Afterwards, between the first equipment and the second equipment, according to the result of consulting, set up a first network, the network identity of this first network adopts described SSID.
So, in first network, measure in the process of distance between the two, do not need to interrupt both connections in first network, do not hinder user's work, promoted user's experience.
Above-mentioned negotiations process also comprises, selects a detection strategy, detects in strategy and at least should determine that the main survey side that initiates to test is the first equipment, and tested side is the second equipment.Described detection strategy also comprises: the frequency of beacon message declaration, always declare cycle, testing time total length, overtime timer length; And confirm to realize time synchronized between the first equipment and the second equipment.Adopt this technical scheme, can in the first equipment and the constructed second network of the second equipment, carry out range determination, no longer rely on third party device.
Adopt Shirley Peak wireless chip as the chip of the wireless network card of the first equipment, now, feedback signal is specially beacon (Beacon) message.Because the first equipment sends Beacon message, be to send in the newly-established wireless network of the first equipment; Thereby do not need being connected of the equipment that affects and legacy network in the process of above-mentioned detection distance, and practical simplicity.
In detecting strategy, main survey side and tested side can be set in advance and role exchange can be realized, if tested side has also adopted Shirley peak wireless chip, also can a virtual wireless network card as wireless access points AP, therefore former main survey side can be carried out to negative testing as new tested side, to promote accuracy.The specific embodiment providing is: the first equipment get and the second equipment between distance after also comprise: the virtual wireless network card of the second equipment is as the second wireless access points AP; The first equipment receives the feedback signal from the second equipment by described the second wireless access points AP; The first equipment or the second equipment all can be determined distance between the two according to described feedback signal; Because herein, feedback signal is generated by the first equipment, thereby first equipment can determine distance between the two according to the intensity of feedback signal, after the second equipment receives feedback signal, also can determine distance between the two according to the intensity of feedback signal.
In different operating system platforms, there is different implementations, wireless network card manufacturer also can provide the function call interface of bottom.For example, on Windows XP (a kind of operating system), can be with reference to network-driven interface specification (NDIS, Network Driver Interface Specification) and IEEE 802.11NetworkAdapter Design Guidelines for Windows XP, when Selection and call parameter is OID_802_11_RSSI, can return to the intensity for wireless signal, due to the intensity of signal and apart from being inversely proportional to, so signal strength signal intensity can characterize distance distance.Alternatively, also can set in advance a signal strength signal intensity and the corresponding table of distance, that is, in the first equipment or the second equipment, store the corresponding table of distance that records the signal strength signal intensity of Beacon message and the corresponding relation of distance; The first equipment is according to the signal strength signal intensity of described Beacon message, searches the corresponding table of described distance, obtain and the second equipment between distance; The second equipment is according to the signal strength signal intensity of Beacon message, searches the corresponding table of distance, obtain and the first equipment between distance.Wherein, Beacon message is the specific implementation of feedback signal.
According to this feedback signal, determine and described tested side between distance time, further, obtain single or multiple test result, these test results are screened, obtain the selection result; According to the selection result, calculate final distance, for example, can directly ask for arithmetic average, geometric mean, also can get intermediate value or after filtering out the highest, minimum, ask for arithmetic average etc.
Determine in the process of a network identity SSID, needing exchange message is basic parameter and the method for testing/step of test network, specifically comprises:
The frequency of Beacon message declaration, always declare the total length of time of cycle and test, and the overtime timer length needing thus etc.; And determine between main survey side and tested side and realize time synchronized.
In concrete grammar, can set in advance acquiescence mode, now not need all to exchange at every turn.
The technology that provides of application the various embodiments described above, detect apart from time not only can not affect the legacy network of each equipment, and can under some egregious cases, realize.For example,
The first equipment, when consulting, is notified the second equipment, opens new wireless network as first network after 2 minutes, and for distance test, but now both sides do not arrange the SSID of first network.
After the second equipment has notice, start to monitor the beacon declaration of whole wireless networks, and after about 2 minutes, found newly-increased ap signal, the first wireless access points AP that is to say the second device discovery.By this first wireless access points, AP receives a feedback signal, according to this feedback signal, calculates distance between the two.
For contributing to disclose above-described embodiment, the application provides a preferred embodiment, this embodiment has described a conference scenario, in a meeting, need several equipment, without loss of generality, equipment is portable computer specifically: computer A, computer B, computer C, and the chip of the wireless network card in each computer is in the process that keeps network to connect, all can fictionalize an other wireless network card as AP, thereby make PAN (Personal Area Network) (PAN, Personal Area Network) and WLAN (wireless local area network) (WLAN, WirelessLocal Area Network) can seamless integration.Between three computers, need to determine distance each other, specifically comprise:
Between step 201. computer A, computer B and computer C, in a WLAN, this network of network sign is specifically set as SSID1, and usings the title of SSID1 as the WLAN at each computer place.This WLAN is a computer A, computer B and the shared network of computer C.
Computer A and computer B also need the parameter of consulting to comprise: the frequency of test declaration, always declare the total length of time of cycle and test, and the overtime timer length needing thus etc.; And determine between main survey side and tested side and realize time synchronized.
Described in step 204., the virtual wireless network card in main survey side, as wireless access points AP, is set up a network with tested side, and this network of network is designated described SSID2.
The intensity of feedback signal is inversely proportional to distance, so signal strength signal intensity can characterize the distance of distance.
Step 207., when determining the distance between computer A and computer B according to this feedback signal, further, is obtained single or multiple test result, and these test results are screened, and obtains the selection result; According to the selection result, calculate final distance, for example, can directly ask for arithmetic average, geometric mean, also can get intermediate value or after filtering out the highest, minimum, ask for arithmetic average etc.
If step 208. is according to the detection strategy of selecting, and is that computer A and computer B all need as main survey side, now convert notes survey side and tested side in follow-up measuring process.
Designated computer B is as main survey side, and computer A now becomes tested side; According to step 204～step 207, again calculate distance between the two.If this distance, with to take the distance that computer A measures during as main survey side inconsistent, should be processed according to predetermined processing rule.
The technology that the application embodiment of the present invention provides, adopt specific wireless network card, this wireless network card can fictionalize an other wireless network card as AP, between two equipment, consult one and be exclusively used in the network identity SSID that measures distance, according to this SSID, set up a network, wherein AP can regard the HUB of this network as, according to the power of the feedback signal in this network, measures distance between the two.
With method accordingly, the embodiment of the present invention provides a kind of equipment, detect and the second equipment between distance, as shown in Figure 3, comprising:
Wireless network card control unit 302,, and is connected by existing between this first wireless access points AP and one second equipment as the first wireless access points AP for a virtual wireless network card;
The technology that application the present embodiment provides, no longer pass through original network checkout equipment distance each other, but on wireless network card, fictionalize a wireless network card as wireless access points AP, by this AP, detect both sides' distance, be not subject to the impact of surrounding environment, and do not affect the original network connection of each equipment.
Equipment can also comprise:
Negotiation element, for by and described the second equipment between a second network, consult to set up a first network, this first network is used for transmitting described feedback signal;
Described signal element is specially a beacon message unit, for generating beacon message as described feedback signal;
The corresponding table unit of distance, be used for storing the corresponding table of a distance, in the corresponding table of described distance, record the corresponding relation of signal strength signal intensity and the distance of described beacon message, according to the signal strength signal intensity of described beacon message, search the corresponding table of described distance, obtain and described the second equipment between distance.
Consult auxiliary unit, in the described negotiation element course of work, determine frequency, the total length of time of always declaring cycle, test and the overtime timer length of beacon message declaration; And confirm to realize time synchronized between the first equipment and the second equipment.
The embodiment of the present invention also provides a kind of system of testing equipment spacing, as shown in Figure 4, at least comprises:
The first equipment and the second equipment, and described the first equipment is main survey side;
The virtual wireless network card of described the first equipment is as wireless access points AP;
Described the second equipment receives the feedback signal from the first equipment by described wireless access points AP;
The second equipment is according to described feedback signal, or described the first equipment described feedback signal next according to the second device forwards, determines distance between the two.Wherein, the first equipment and the second equipment both sides are originally in an existing WLAN, and the network identity of this WLAN is SSID0.
The technology that application the present embodiment provides, on wireless network card, fictionalize wireless network card as new wireless access points AP, by this AP, send feedback signal, according to this feedback signal, detect both sides' distance, because the wireless access points AP by new sends feedback signal, thereby the original network of equipment is unaffected; And in the first equipment and the constructed network of the second equipment, detect, no longer rely on third party device checkout equipment distance each other.
It should be noted that above embodiment is only unrestricted in order to technical scheme of the present invention to be described, all parameter values can be according to actual conditions adjustment, and within the scope of this rights protection.Those of ordinary skill in the art should be appreciated that and can modify or be equal to replacement technical scheme of the present invention, and do not depart from the spiritual scope of technical solution of the present invention, and it all should be encompassed in the middle of claim scope of the present invention.
Claims (9)
1. a method for checkout equipment spacing, is characterized in that, comprising:
Between the first equipment and the second equipment, there is a second network; By described second network and described the second equipment, consult to set up first network;
The virtual wireless network card of the first equipment is as the first wireless access points AP;
Described the first equipment is set up described first network by this first wireless access points AP;
Described the first equipment, in described first network, sends a feedback signal by described the first wireless access points AP and arrives described the second equipment;
Obtain the distance of the first equipment and described the second equipment room, described distance is calculated according to described feedback signal according to described feedback signal or described the second equipment by described the first equipment.
2. method according to claim 1, is characterized in that,
Negotiations process at least needs to determine the network identity SSID of described first network.
3. method according to claim 1, is characterized in that, obtains the distance of the first equipment and described the second equipment room described in, further comprises:
By one second wireless access points AP, receive the feedback signal from the second equipment, described the second wireless access points AP is generated by the virtual wireless network card of described the second equipment;
Described distance is calculated according to described feedback signal according to described feedback signal or described the second equipment by described the first equipment.
4. according to the method described in claim 1 or 3, it is characterized in that, described feedback signal is specially beacon message;
In described the first equipment or described the second equipment, store the corresponding table of distance that records the signal strength signal intensity of described beacon message and the corresponding relation of distance;
Described the first equipment or described the second equipment, according to the signal strength signal intensity of described beacon message, are searched the corresponding table of described distance, obtain distance between the two.
5. method according to claim 1, is characterized in that, a described virtual wireless network card also comprises as before the first wireless access points AP:
Select one to detect strategy, at least should determine that the main survey side that initiates to detect is the first equipment in described detection strategy, tested side is the second equipment;
Described detection strategy also comprises:
The frequency of beacon message declaration, always declare cycle, testing time total length, overtime timer length, and confirm to realize time synchronized between the first equipment and the second equipment.
6. method according to claim 1, is characterized in that, described in obtain the distance of the first equipment and described the second equipment room described in, further comprise:
Obtain the distance that described the second equipment calculates according to described feedback signal;
Or,
The described feedback signal of coming according to described the second device forwards calculates described distance.
7. an equipment, is characterized in that, comprising:
Negotiation element, for by and the second equipment between a second network, consult to set up a first network, the feedback signal that described equipment sends is transmitted in described first network;
Wireless network card control unit, for a virtual wireless network card, as the first wireless access points AP, this first wireless access points AP sets up a first network for described equipment and described the second equipment;
Signal element, for generating feedback signal, in described first network, this feedback signal arrives described the second equipment by described the first wireless access points AP;
Measure range unit, for obtaining the distance of described equipment and described the second equipment room, described distance is calculated according to described feedback signal according to described feedback signal or described the second equipment by described equipment.
8. equipment according to claim 7, is characterized in that, also comprises:
Described signal element is specially a beacon message unit, for generating beacon message as described feedback signal;
The corresponding table unit of distance, be used for storing the corresponding table of a distance, in the corresponding table of described distance, record the signal strength signal intensity of described beacon message and the corresponding relation between distance, according to the signal strength signal intensity of described beacon message, search the corresponding table of described distance, obtain and described the second equipment between distance.
9. a system for testing equipment spacing, is characterized in that, at least comprises:
The first equipment and the second equipment, and described the first equipment is main survey side;
The first equipment comprises a negotiation element, for by and the second equipment between a second network, consult to set up a first network, the feedback signal that described the first equipment sends is transmitted in described first network;
The virtual wireless network card of described the first equipment is as wireless access points AP; The first equipment is set up a first network by this first wireless access points AP;
Described the second equipment, in described first network, receives the feedback signal from the first equipment by described wireless access points AP;
The second equipment is according to described feedback signal, or described the first equipment described feedback signal next according to the second device forwards, calculates distance between the two.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910092891.7A CN102026367B (en) | 2009-09-10 | 2009-09-10 | Device, method and system for testing distance between devices |
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| CN200910092891.7A CN102026367B (en) | 2009-09-10 | 2009-09-10 | Device, method and system for testing distance between devices |
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| CN103581821A (en) * | 2012-07-19 | 2014-02-12 | 中兴通讯股份有限公司 | Ranging method and ranging device |
| CN105159105B (en) * | 2015-08-13 | 2019-06-14 | 小米科技有限责任公司 | Intelligent electric appliance working method and device |
| US10139482B2 (en) * | 2015-12-09 | 2018-11-27 | Mitsubishi Electric Corporation | Location identification apparatus and communication terminal |
| CN105792355A (en) * | 2016-04-22 | 2016-07-20 | 广东小天才科技有限公司 | Distance reminding method and system based on wifi hotspot |
| CN110515035A (en) * | 2018-05-21 | 2019-11-29 | 开利公司 | Method for learning deployed environment special characteristic to carry out seamless access |
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